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1 | // CodeMirror, copyright (c) by Marijn Haverbeke and others | |
2 | // Distributed under an MIT license: http://codemirror.net/LICENSE | |
3 | ||
4 | // This is CodeMirror (http://codemirror.net), a code editor | |
5 | // implemented in JavaScript on top of the browser's DOM. | |
6 | // | |
7 | // You can find some technical background for some of the code below | |
8 | // at http://marijnhaverbeke.nl/blog/#cm-internals . | |
9 | ||
10 | (function(mod) { | |
11 | if (typeof exports == "object" && typeof module == "object") // CommonJS | |
12 | module.exports = mod(); | |
13 | else if (typeof define == "function" && define.amd) // AMD | |
14 | return define([], mod); | |
15 | else // Plain browser env | |
16 | this.CodeMirror = mod(); | |
17 | })(function() { | |
18 | "use strict"; | |
19 | ||
20 | // BROWSER SNIFFING | |
21 | ||
22 | // Kludges for bugs and behavior differences that can't be feature | |
23 | // detected are enabled based on userAgent etc sniffing. | |
24 | ||
25 | var gecko = /gecko\/\d/i.test(navigator.userAgent); | |
26 | var ie_upto10 = /MSIE \d/.test(navigator.userAgent); | |
27 | var ie_11up = /Trident\/(?:[7-9]|\d{2,})\..*rv:(\d+)/.exec(navigator.userAgent); | |
28 | var ie = ie_upto10 || ie_11up; | |
29 | var ie_version = ie && (ie_upto10 ? document.documentMode || 6 : ie_11up[1]); | |
30 | var webkit = /WebKit\//.test(navigator.userAgent); | |
31 | var qtwebkit = webkit && /Qt\/\d+\.\d+/.test(navigator.userAgent); | |
32 | var chrome = /Chrome\//.test(navigator.userAgent); | |
33 | var presto = /Opera\//.test(navigator.userAgent); | |
34 | var safari = /Apple Computer/.test(navigator.vendor); | |
35 | var mac_geMountainLion = /Mac OS X 1\d\D([8-9]|\d\d)\D/.test(navigator.userAgent); | |
36 | var phantom = /PhantomJS/.test(navigator.userAgent); | |
37 | ||
38 | var ios = /AppleWebKit/.test(navigator.userAgent) && /Mobile\/\w+/.test(navigator.userAgent); | |
39 | // This is woefully incomplete. Suggestions for alternative methods welcome. | |
40 | var mobile = ios || /Android|webOS|BlackBerry|Opera Mini|Opera Mobi|IEMobile/i.test(navigator.userAgent); | |
41 | var mac = ios || /Mac/.test(navigator.platform); | |
42 | var windows = /win/i.test(navigator.platform); | |
43 | ||
44 | var presto_version = presto && navigator.userAgent.match(/Version\/(\d*\.\d*)/); | |
45 | if (presto_version) presto_version = Number(presto_version[1]); | |
46 | if (presto_version && presto_version >= 15) { presto = false; webkit = true; } | |
47 | // Some browsers use the wrong event properties to signal cmd/ctrl on OS X | |
48 | var flipCtrlCmd = mac && (qtwebkit || presto && (presto_version == null || presto_version < 12.11)); | |
49 | var captureRightClick = gecko || (ie && ie_version >= 9); | |
50 | ||
51 | // Optimize some code when these features are not used. | |
52 | var sawReadOnlySpans = false, sawCollapsedSpans = false; | |
53 | ||
54 | // EDITOR CONSTRUCTOR | |
55 | ||
56 | // A CodeMirror instance represents an editor. This is the object | |
57 | // that user code is usually dealing with. | |
58 | ||
59 | function CodeMirror(place, options) { | |
60 | if (!(this instanceof CodeMirror)) return new CodeMirror(place, options); | |
61 | ||
62 | this.options = options = options ? copyObj(options) : {}; | |
63 | // Determine effective options based on given values and defaults. | |
64 | copyObj(defaults, options, false); | |
65 | setGuttersForLineNumbers(options); | |
66 | ||
67 | var doc = options.value; | |
68 | if (typeof doc == "string") doc = new Doc(doc, options.mode); | |
69 | this.doc = doc; | |
70 | ||
71 | var input = new CodeMirror.inputStyles[options.inputStyle](this); | |
72 | var display = this.display = new Display(place, doc, input); | |
73 | display.wrapper.CodeMirror = this; | |
74 | updateGutters(this); | |
75 | themeChanged(this); | |
76 | if (options.lineWrapping) | |
77 | this.display.wrapper.className += " CodeMirror-wrap"; | |
78 | if (options.autofocus && !mobile) display.input.focus(); | |
79 | initScrollbars(this); | |
80 | ||
81 | this.state = { | |
82 | keyMaps: [], // stores maps added by addKeyMap | |
83 | overlays: [], // highlighting overlays, as added by addOverlay | |
84 | modeGen: 0, // bumped when mode/overlay changes, used to invalidate highlighting info | |
85 | overwrite: false, | |
86 | delayingBlurEvent: false, | |
87 | focused: false, | |
88 | suppressEdits: false, // used to disable editing during key handlers when in readOnly mode | |
89 | pasteIncoming: false, cutIncoming: false, // help recognize paste/cut edits in input.poll | |
90 | draggingText: false, | |
91 | highlight: new Delayed(), // stores highlight worker timeout | |
92 | keySeq: null, // Unfinished key sequence | |
93 | specialChars: null | |
94 | }; | |
95 | ||
96 | var cm = this; | |
97 | ||
98 | // Override magic textarea content restore that IE sometimes does | |
99 | // on our hidden textarea on reload | |
100 | if (ie && ie_version < 11) setTimeout(function() { cm.display.input.reset(true); }, 20); | |
101 | ||
102 | registerEventHandlers(this); | |
103 | ensureGlobalHandlers(); | |
104 | ||
105 | startOperation(this); | |
106 | this.curOp.forceUpdate = true; | |
107 | attachDoc(this, doc); | |
108 | ||
109 | if ((options.autofocus && !mobile) || cm.hasFocus()) | |
110 | setTimeout(bind(onFocus, this), 20); | |
111 | else | |
112 | onBlur(this); | |
113 | ||
114 | for (var opt in optionHandlers) if (optionHandlers.hasOwnProperty(opt)) | |
115 | optionHandlers[opt](this, options[opt], Init); | |
116 | maybeUpdateLineNumberWidth(this); | |
117 | if (options.finishInit) options.finishInit(this); | |
118 | for (var i = 0; i < initHooks.length; ++i) initHooks[i](this); | |
119 | endOperation(this); | |
120 | // Suppress optimizelegibility in Webkit, since it breaks text | |
121 | // measuring on line wrapping boundaries. | |
122 | if (webkit && options.lineWrapping && | |
123 | getComputedStyle(display.lineDiv).textRendering == "optimizelegibility") | |
124 | display.lineDiv.style.textRendering = "auto"; | |
125 | } | |
126 | ||
127 | // DISPLAY CONSTRUCTOR | |
128 | ||
129 | // The display handles the DOM integration, both for input reading | |
130 | // and content drawing. It holds references to DOM nodes and | |
131 | // display-related state. | |
132 | ||
133 | function Display(place, doc, input) { | |
134 | var d = this; | |
135 | this.input = input; | |
136 | ||
137 | // Covers bottom-right square when both scrollbars are present. | |
138 | d.scrollbarFiller = elt("div", null, "CodeMirror-scrollbar-filler"); | |
139 | d.scrollbarFiller.setAttribute("cm-not-content", "true"); | |
140 | // Covers bottom of gutter when coverGutterNextToScrollbar is on | |
141 | // and h scrollbar is present. | |
142 | d.gutterFiller = elt("div", null, "CodeMirror-gutter-filler"); | |
143 | d.gutterFiller.setAttribute("cm-not-content", "true"); | |
144 | // Will contain the actual code, positioned to cover the viewport. | |
145 | d.lineDiv = elt("div", null, "CodeMirror-code"); | |
146 | // Elements are added to these to represent selection and cursors. | |
147 | d.selectionDiv = elt("div", null, null, "position: relative; z-index: 1"); | |
148 | d.cursorDiv = elt("div", null, "CodeMirror-cursors"); | |
149 | // A visibility: hidden element used to find the size of things. | |
150 | d.measure = elt("div", null, "CodeMirror-measure"); | |
151 | // When lines outside of the viewport are measured, they are drawn in this. | |
152 | d.lineMeasure = elt("div", null, "CodeMirror-measure"); | |
153 | // Wraps everything that needs to exist inside the vertically-padded coordinate system | |
154 | d.lineSpace = elt("div", [d.measure, d.lineMeasure, d.selectionDiv, d.cursorDiv, d.lineDiv], | |
155 | null, "position: relative; outline: none"); | |
156 | // Moved around its parent to cover visible view. | |
157 | d.mover = elt("div", [elt("div", [d.lineSpace], "CodeMirror-lines")], null, "position: relative"); | |
158 | // Set to the height of the document, allowing scrolling. | |
159 | d.sizer = elt("div", [d.mover], "CodeMirror-sizer"); | |
160 | d.sizerWidth = null; | |
161 | // Behavior of elts with overflow: auto and padding is | |
162 | // inconsistent across browsers. This is used to ensure the | |
163 | // scrollable area is big enough. | |
164 | d.heightForcer = elt("div", null, null, "position: absolute; height: " + scrollerGap + "px; width: 1px;"); | |
165 | // Will contain the gutters, if any. | |
166 | d.gutters = elt("div", null, "CodeMirror-gutters"); | |
167 | d.lineGutter = null; | |
168 | // Actual scrollable element. | |
169 | d.scroller = elt("div", [d.sizer, d.heightForcer, d.gutters], "CodeMirror-scroll"); | |
170 | d.scroller.setAttribute("tabIndex", "-1"); | |
171 | // The element in which the editor lives. | |
172 | d.wrapper = elt("div", [d.scrollbarFiller, d.gutterFiller, d.scroller], "CodeMirror"); | |
173 | ||
174 | // Work around IE7 z-index bug (not perfect, hence IE7 not really being supported) | |
175 | if (ie && ie_version < 8) { d.gutters.style.zIndex = -1; d.scroller.style.paddingRight = 0; } | |
176 | if (!webkit && !(gecko && mobile)) d.scroller.draggable = true; | |
177 | ||
178 | if (place) { | |
179 | if (place.appendChild) place.appendChild(d.wrapper); | |
180 | else place(d.wrapper); | |
181 | } | |
182 | ||
183 | // Current rendered range (may be bigger than the view window). | |
184 | d.viewFrom = d.viewTo = doc.first; | |
185 | d.reportedViewFrom = d.reportedViewTo = doc.first; | |
186 | // Information about the rendered lines. | |
187 | d.view = []; | |
188 | d.renderedView = null; | |
189 | // Holds info about a single rendered line when it was rendered | |
190 | // for measurement, while not in view. | |
191 | d.externalMeasured = null; | |
192 | // Empty space (in pixels) above the view | |
193 | d.viewOffset = 0; | |
194 | d.lastWrapHeight = d.lastWrapWidth = 0; | |
195 | d.updateLineNumbers = null; | |
196 | ||
197 | d.nativeBarWidth = d.barHeight = d.barWidth = 0; | |
198 | d.scrollbarsClipped = false; | |
199 | ||
200 | // Used to only resize the line number gutter when necessary (when | |
201 | // the amount of lines crosses a boundary that makes its width change) | |
202 | d.lineNumWidth = d.lineNumInnerWidth = d.lineNumChars = null; | |
203 | // Set to true when a non-horizontal-scrolling line widget is | |
204 | // added. As an optimization, line widget aligning is skipped when | |
205 | // this is false. | |
206 | d.alignWidgets = false; | |
207 | ||
208 | d.cachedCharWidth = d.cachedTextHeight = d.cachedPaddingH = null; | |
209 | ||
210 | // Tracks the maximum line length so that the horizontal scrollbar | |
211 | // can be kept static when scrolling. | |
212 | d.maxLine = null; | |
213 | d.maxLineLength = 0; | |
214 | d.maxLineChanged = false; | |
215 | ||
216 | // Used for measuring wheel scrolling granularity | |
217 | d.wheelDX = d.wheelDY = d.wheelStartX = d.wheelStartY = null; | |
218 | ||
219 | // True when shift is held down. | |
220 | d.shift = false; | |
221 | ||
222 | // Used to track whether anything happened since the context menu | |
223 | // was opened. | |
224 | d.selForContextMenu = null; | |
225 | ||
226 | d.activeTouch = null; | |
227 | ||
228 | input.init(d); | |
229 | } | |
230 | ||
231 | // STATE UPDATES | |
232 | ||
233 | // Used to get the editor into a consistent state again when options change. | |
234 | ||
235 | function loadMode(cm) { | |
236 | cm.doc.mode = CodeMirror.getMode(cm.options, cm.doc.modeOption); | |
237 | resetModeState(cm); | |
238 | } | |
239 | ||
240 | function resetModeState(cm) { | |
241 | cm.doc.iter(function(line) { | |
242 | if (line.stateAfter) line.stateAfter = null; | |
243 | if (line.styles) line.styles = null; | |
244 | }); | |
245 | cm.doc.frontier = cm.doc.first; | |
246 | startWorker(cm, 100); | |
247 | cm.state.modeGen++; | |
248 | if (cm.curOp) regChange(cm); | |
249 | } | |
250 | ||
251 | function wrappingChanged(cm) { | |
252 | if (cm.options.lineWrapping) { | |
253 | addClass(cm.display.wrapper, "CodeMirror-wrap"); | |
254 | cm.display.sizer.style.minWidth = ""; | |
255 | cm.display.sizerWidth = null; | |
256 | } else { | |
257 | rmClass(cm.display.wrapper, "CodeMirror-wrap"); | |
258 | findMaxLine(cm); | |
259 | } | |
260 | estimateLineHeights(cm); | |
261 | regChange(cm); | |
262 | clearCaches(cm); | |
263 | setTimeout(function(){updateScrollbars(cm);}, 100); | |
264 | } | |
265 | ||
266 | // Returns a function that estimates the height of a line, to use as | |
267 | // first approximation until the line becomes visible (and is thus | |
268 | // properly measurable). | |
269 | function estimateHeight(cm) { | |
270 | var th = textHeight(cm.display), wrapping = cm.options.lineWrapping; | |
271 | var perLine = wrapping && Math.max(5, cm.display.scroller.clientWidth / charWidth(cm.display) - 3); | |
272 | return function(line) { | |
273 | if (lineIsHidden(cm.doc, line)) return 0; | |
274 | ||
275 | var widgetsHeight = 0; | |
276 | if (line.widgets) for (var i = 0; i < line.widgets.length; i++) { | |
277 | if (line.widgets[i].height) widgetsHeight += line.widgets[i].height; | |
278 | } | |
279 | ||
280 | if (wrapping) | |
281 | return widgetsHeight + (Math.ceil(line.text.length / perLine) || 1) * th; | |
282 | else | |
283 | return widgetsHeight + th; | |
284 | }; | |
285 | } | |
286 | ||
287 | function estimateLineHeights(cm) { | |
288 | var doc = cm.doc, est = estimateHeight(cm); | |
289 | doc.iter(function(line) { | |
290 | var estHeight = est(line); | |
291 | if (estHeight != line.height) updateLineHeight(line, estHeight); | |
292 | }); | |
293 | } | |
294 | ||
295 | function themeChanged(cm) { | |
296 | cm.display.wrapper.className = cm.display.wrapper.className.replace(/\s*cm-s-\S+/g, "") + | |
297 | cm.options.theme.replace(/(^|\s)\s*/g, " cm-s-"); | |
298 | clearCaches(cm); | |
299 | } | |
300 | ||
301 | function guttersChanged(cm) { | |
302 | updateGutters(cm); | |
303 | regChange(cm); | |
304 | setTimeout(function(){alignHorizontally(cm);}, 20); | |
305 | } | |
306 | ||
307 | // Rebuild the gutter elements, ensure the margin to the left of the | |
308 | // code matches their width. | |
309 | function updateGutters(cm) { | |
310 | var gutters = cm.display.gutters, specs = cm.options.gutters; | |
311 | removeChildren(gutters); | |
312 | for (var i = 0; i < specs.length; ++i) { | |
313 | var gutterClass = specs[i]; | |
314 | var gElt = gutters.appendChild(elt("div", null, "CodeMirror-gutter " + gutterClass)); | |
315 | if (gutterClass == "CodeMirror-linenumbers") { | |
316 | cm.display.lineGutter = gElt; | |
317 | gElt.style.width = (cm.display.lineNumWidth || 1) + "px"; | |
318 | } | |
319 | } | |
320 | gutters.style.display = i ? "" : "none"; | |
321 | updateGutterSpace(cm); | |
322 | } | |
323 | ||
324 | function updateGutterSpace(cm) { | |
325 | var width = cm.display.gutters.offsetWidth; | |
326 | cm.display.sizer.style.marginLeft = width + "px"; | |
327 | } | |
328 | ||
329 | // Compute the character length of a line, taking into account | |
330 | // collapsed ranges (see markText) that might hide parts, and join | |
331 | // other lines onto it. | |
332 | function lineLength(line) { | |
333 | if (line.height == 0) return 0; | |
334 | var len = line.text.length, merged, cur = line; | |
335 | while (merged = collapsedSpanAtStart(cur)) { | |
336 | var found = merged.find(0, true); | |
337 | cur = found.from.line; | |
338 | len += found.from.ch - found.to.ch; | |
339 | } | |
340 | cur = line; | |
341 | while (merged = collapsedSpanAtEnd(cur)) { | |
342 | var found = merged.find(0, true); | |
343 | len -= cur.text.length - found.from.ch; | |
344 | cur = found.to.line; | |
345 | len += cur.text.length - found.to.ch; | |
346 | } | |
347 | return len; | |
348 | } | |
349 | ||
350 | // Find the longest line in the document. | |
351 | function findMaxLine(cm) { | |
352 | var d = cm.display, doc = cm.doc; | |
353 | d.maxLine = getLine(doc, doc.first); | |
354 | d.maxLineLength = lineLength(d.maxLine); | |
355 | d.maxLineChanged = true; | |
356 | doc.iter(function(line) { | |
357 | var len = lineLength(line); | |
358 | if (len > d.maxLineLength) { | |
359 | d.maxLineLength = len; | |
360 | d.maxLine = line; | |
361 | } | |
362 | }); | |
363 | } | |
364 | ||
365 | // Make sure the gutters options contains the element | |
366 | // "CodeMirror-linenumbers" when the lineNumbers option is true. | |
367 | function setGuttersForLineNumbers(options) { | |
368 | var found = indexOf(options.gutters, "CodeMirror-linenumbers"); | |
369 | if (found == -1 && options.lineNumbers) { | |
370 | options.gutters = options.gutters.concat(["CodeMirror-linenumbers"]); | |
371 | } else if (found > -1 && !options.lineNumbers) { | |
372 | options.gutters = options.gutters.slice(0); | |
373 | options.gutters.splice(found, 1); | |
374 | } | |
375 | } | |
376 | ||
377 | // SCROLLBARS | |
378 | ||
379 | // Prepare DOM reads needed to update the scrollbars. Done in one | |
380 | // shot to minimize update/measure roundtrips. | |
381 | function measureForScrollbars(cm) { | |
382 | var d = cm.display, gutterW = d.gutters.offsetWidth; | |
383 | var docH = Math.round(cm.doc.height + paddingVert(cm.display)); | |
384 | return { | |
385 | clientHeight: d.scroller.clientHeight, | |
386 | viewHeight: d.wrapper.clientHeight, | |
387 | scrollWidth: d.scroller.scrollWidth, clientWidth: d.scroller.clientWidth, | |
388 | viewWidth: d.wrapper.clientWidth, | |
389 | barLeft: cm.options.fixedGutter ? gutterW : 0, | |
390 | docHeight: docH, | |
391 | scrollHeight: docH + scrollGap(cm) + d.barHeight, | |
392 | nativeBarWidth: d.nativeBarWidth, | |
393 | gutterWidth: gutterW | |
394 | }; | |
395 | } | |
396 | ||
397 | function NativeScrollbars(place, scroll, cm) { | |
398 | this.cm = cm; | |
399 | var vert = this.vert = elt("div", [elt("div", null, null, "min-width: 1px")], "CodeMirror-vscrollbar"); | |
400 | var horiz = this.horiz = elt("div", [elt("div", null, null, "height: 100%; min-height: 1px")], "CodeMirror-hscrollbar"); | |
401 | place(vert); place(horiz); | |
402 | ||
403 | on(vert, "scroll", function() { | |
404 | if (vert.clientHeight) scroll(vert.scrollTop, "vertical"); | |
405 | }); | |
406 | on(horiz, "scroll", function() { | |
407 | if (horiz.clientWidth) scroll(horiz.scrollLeft, "horizontal"); | |
408 | }); | |
409 | ||
410 | this.checkedOverlay = false; | |
411 | // Need to set a minimum width to see the scrollbar on IE7 (but must not set it on IE8). | |
412 | if (ie && ie_version < 8) this.horiz.style.minHeight = this.vert.style.minWidth = "18px"; | |
413 | } | |
414 | ||
415 | NativeScrollbars.prototype = copyObj({ | |
416 | update: function(measure) { | |
417 | var needsH = measure.scrollWidth > measure.clientWidth + 1; | |
418 | var needsV = measure.scrollHeight > measure.clientHeight + 1; | |
419 | var sWidth = measure.nativeBarWidth; | |
420 | ||
421 | if (needsV) { | |
422 | this.vert.style.display = "block"; | |
423 | this.vert.style.bottom = needsH ? sWidth + "px" : "0"; | |
424 | var totalHeight = measure.viewHeight - (needsH ? sWidth : 0); | |
425 | // A bug in IE8 can cause this value to be negative, so guard it. | |
426 | this.vert.firstChild.style.height = | |
427 | Math.max(0, measure.scrollHeight - measure.clientHeight + totalHeight) + "px"; | |
428 | } else { | |
429 | this.vert.style.display = ""; | |
430 | this.vert.firstChild.style.height = "0"; | |
431 | } | |
432 | ||
433 | if (needsH) { | |
434 | this.horiz.style.display = "block"; | |
435 | this.horiz.style.right = needsV ? sWidth + "px" : "0"; | |
436 | this.horiz.style.left = measure.barLeft + "px"; | |
437 | var totalWidth = measure.viewWidth - measure.barLeft - (needsV ? sWidth : 0); | |
438 | this.horiz.firstChild.style.width = | |
439 | (measure.scrollWidth - measure.clientWidth + totalWidth) + "px"; | |
440 | } else { | |
441 | this.horiz.style.display = ""; | |
442 | this.horiz.firstChild.style.width = "0"; | |
443 | } | |
444 | ||
445 | if (!this.checkedOverlay && measure.clientHeight > 0) { | |
446 | if (sWidth == 0) this.overlayHack(); | |
447 | this.checkedOverlay = true; | |
448 | } | |
449 | ||
450 | return {right: needsV ? sWidth : 0, bottom: needsH ? sWidth : 0}; | |
451 | }, | |
452 | setScrollLeft: function(pos) { | |
453 | if (this.horiz.scrollLeft != pos) this.horiz.scrollLeft = pos; | |
454 | }, | |
455 | setScrollTop: function(pos) { | |
456 | if (this.vert.scrollTop != pos) this.vert.scrollTop = pos; | |
457 | }, | |
458 | overlayHack: function() { | |
459 | var w = mac && !mac_geMountainLion ? "12px" : "18px"; | |
460 | this.horiz.style.minHeight = this.vert.style.minWidth = w; | |
461 | var self = this; | |
462 | var barMouseDown = function(e) { | |
463 | if (e_target(e) != self.vert && e_target(e) != self.horiz) | |
464 | operation(self.cm, onMouseDown)(e); | |
465 | }; | |
466 | on(this.vert, "mousedown", barMouseDown); | |
467 | on(this.horiz, "mousedown", barMouseDown); | |
468 | }, | |
469 | clear: function() { | |
470 | var parent = this.horiz.parentNode; | |
471 | parent.removeChild(this.horiz); | |
472 | parent.removeChild(this.vert); | |
473 | } | |
474 | }, NativeScrollbars.prototype); | |
475 | ||
476 | function NullScrollbars() {} | |
477 | ||
478 | NullScrollbars.prototype = copyObj({ | |
479 | update: function() { return {bottom: 0, right: 0}; }, | |
480 | setScrollLeft: function() {}, | |
481 | setScrollTop: function() {}, | |
482 | clear: function() {} | |
483 | }, NullScrollbars.prototype); | |
484 | ||
485 | CodeMirror.scrollbarModel = {"native": NativeScrollbars, "null": NullScrollbars}; | |
486 | ||
487 | function initScrollbars(cm) { | |
488 | if (cm.display.scrollbars) { | |
489 | cm.display.scrollbars.clear(); | |
490 | if (cm.display.scrollbars.addClass) | |
491 | rmClass(cm.display.wrapper, cm.display.scrollbars.addClass); | |
492 | } | |
493 | ||
494 | cm.display.scrollbars = new CodeMirror.scrollbarModel[cm.options.scrollbarStyle](function(node) { | |
495 | cm.display.wrapper.insertBefore(node, cm.display.scrollbarFiller); | |
496 | // Prevent clicks in the scrollbars from killing focus | |
497 | on(node, "mousedown", function() { | |
498 | if (cm.state.focused) setTimeout(function() { cm.display.input.focus(); }, 0); | |
499 | }); | |
500 | node.setAttribute("cm-not-content", "true"); | |
501 | }, function(pos, axis) { | |
502 | if (axis == "horizontal") setScrollLeft(cm, pos); | |
503 | else setScrollTop(cm, pos); | |
504 | }, cm); | |
505 | if (cm.display.scrollbars.addClass) | |
506 | addClass(cm.display.wrapper, cm.display.scrollbars.addClass); | |
507 | } | |
508 | ||
509 | function updateScrollbars(cm, measure) { | |
510 | if (!measure) measure = measureForScrollbars(cm); | |
511 | var startWidth = cm.display.barWidth, startHeight = cm.display.barHeight; | |
512 | updateScrollbarsInner(cm, measure); | |
513 | for (var i = 0; i < 4 && startWidth != cm.display.barWidth || startHeight != cm.display.barHeight; i++) { | |
514 | if (startWidth != cm.display.barWidth && cm.options.lineWrapping) | |
515 | updateHeightsInViewport(cm); | |
516 | updateScrollbarsInner(cm, measureForScrollbars(cm)); | |
517 | startWidth = cm.display.barWidth; startHeight = cm.display.barHeight; | |
518 | } | |
519 | } | |
520 | ||
521 | // Re-synchronize the fake scrollbars with the actual size of the | |
522 | // content. | |
523 | function updateScrollbarsInner(cm, measure) { | |
524 | var d = cm.display; | |
525 | var sizes = d.scrollbars.update(measure); | |
526 | ||
527 | d.sizer.style.paddingRight = (d.barWidth = sizes.right) + "px"; | |
528 | d.sizer.style.paddingBottom = (d.barHeight = sizes.bottom) + "px"; | |
529 | ||
530 | if (sizes.right && sizes.bottom) { | |
531 | d.scrollbarFiller.style.display = "block"; | |
532 | d.scrollbarFiller.style.height = sizes.bottom + "px"; | |
533 | d.scrollbarFiller.style.width = sizes.right + "px"; | |
534 | } else d.scrollbarFiller.style.display = ""; | |
535 | if (sizes.bottom && cm.options.coverGutterNextToScrollbar && cm.options.fixedGutter) { | |
536 | d.gutterFiller.style.display = "block"; | |
537 | d.gutterFiller.style.height = sizes.bottom + "px"; | |
538 | d.gutterFiller.style.width = measure.gutterWidth + "px"; | |
539 | } else d.gutterFiller.style.display = ""; | |
540 | } | |
541 | ||
542 | // Compute the lines that are visible in a given viewport (defaults | |
543 | // the the current scroll position). viewport may contain top, | |
544 | // height, and ensure (see op.scrollToPos) properties. | |
545 | function visibleLines(display, doc, viewport) { | |
546 | var top = viewport && viewport.top != null ? Math.max(0, viewport.top) : display.scroller.scrollTop; | |
547 | top = Math.floor(top - paddingTop(display)); | |
548 | var bottom = viewport && viewport.bottom != null ? viewport.bottom : top + display.wrapper.clientHeight; | |
549 | ||
550 | var from = lineAtHeight(doc, top), to = lineAtHeight(doc, bottom); | |
551 | // Ensure is a {from: {line, ch}, to: {line, ch}} object, and | |
552 | // forces those lines into the viewport (if possible). | |
553 | if (viewport && viewport.ensure) { | |
554 | var ensureFrom = viewport.ensure.from.line, ensureTo = viewport.ensure.to.line; | |
555 | if (ensureFrom < from) { | |
556 | from = ensureFrom; | |
557 | to = lineAtHeight(doc, heightAtLine(getLine(doc, ensureFrom)) + display.wrapper.clientHeight); | |
558 | } else if (Math.min(ensureTo, doc.lastLine()) >= to) { | |
559 | from = lineAtHeight(doc, heightAtLine(getLine(doc, ensureTo)) - display.wrapper.clientHeight); | |
560 | to = ensureTo; | |
561 | } | |
562 | } | |
563 | return {from: from, to: Math.max(to, from + 1)}; | |
564 | } | |
565 | ||
566 | // LINE NUMBERS | |
567 | ||
568 | // Re-align line numbers and gutter marks to compensate for | |
569 | // horizontal scrolling. | |
570 | function alignHorizontally(cm) { | |
571 | var display = cm.display, view = display.view; | |
572 | if (!display.alignWidgets && (!display.gutters.firstChild || !cm.options.fixedGutter)) return; | |
573 | var comp = compensateForHScroll(display) - display.scroller.scrollLeft + cm.doc.scrollLeft; | |
574 | var gutterW = display.gutters.offsetWidth, left = comp + "px"; | |
575 | for (var i = 0; i < view.length; i++) if (!view[i].hidden) { | |
576 | if (cm.options.fixedGutter && view[i].gutter) | |
577 | view[i].gutter.style.left = left; | |
578 | var align = view[i].alignable; | |
579 | if (align) for (var j = 0; j < align.length; j++) | |
580 | align[j].style.left = left; | |
581 | } | |
582 | if (cm.options.fixedGutter) | |
583 | display.gutters.style.left = (comp + gutterW) + "px"; | |
584 | } | |
585 | ||
586 | // Used to ensure that the line number gutter is still the right | |
587 | // size for the current document size. Returns true when an update | |
588 | // is needed. | |
589 | function maybeUpdateLineNumberWidth(cm) { | |
590 | if (!cm.options.lineNumbers) return false; | |
591 | var doc = cm.doc, last = lineNumberFor(cm.options, doc.first + doc.size - 1), display = cm.display; | |
592 | if (last.length != display.lineNumChars) { | |
593 | var test = display.measure.appendChild(elt("div", [elt("div", last)], | |
594 | "CodeMirror-linenumber CodeMirror-gutter-elt")); | |
595 | var innerW = test.firstChild.offsetWidth, padding = test.offsetWidth - innerW; | |
596 | display.lineGutter.style.width = ""; | |
597 | display.lineNumInnerWidth = Math.max(innerW, display.lineGutter.offsetWidth - padding) + 1; | |
598 | display.lineNumWidth = display.lineNumInnerWidth + padding; | |
599 | display.lineNumChars = display.lineNumInnerWidth ? last.length : -1; | |
600 | display.lineGutter.style.width = display.lineNumWidth + "px"; | |
601 | updateGutterSpace(cm); | |
602 | return true; | |
603 | } | |
604 | return false; | |
605 | } | |
606 | ||
607 | function lineNumberFor(options, i) { | |
608 | return String(options.lineNumberFormatter(i + options.firstLineNumber)); | |
609 | } | |
610 | ||
611 | // Computes display.scroller.scrollLeft + display.gutters.offsetWidth, | |
612 | // but using getBoundingClientRect to get a sub-pixel-accurate | |
613 | // result. | |
614 | function compensateForHScroll(display) { | |
615 | return display.scroller.getBoundingClientRect().left - display.sizer.getBoundingClientRect().left; | |
616 | } | |
617 | ||
618 | // DISPLAY DRAWING | |
619 | ||
620 | function DisplayUpdate(cm, viewport, force) { | |
621 | var display = cm.display; | |
622 | ||
623 | this.viewport = viewport; | |
624 | // Store some values that we'll need later (but don't want to force a relayout for) | |
625 | this.visible = visibleLines(display, cm.doc, viewport); | |
626 | this.editorIsHidden = !display.wrapper.offsetWidth; | |
627 | this.wrapperHeight = display.wrapper.clientHeight; | |
628 | this.wrapperWidth = display.wrapper.clientWidth; | |
629 | this.oldDisplayWidth = displayWidth(cm); | |
630 | this.force = force; | |
631 | this.dims = getDimensions(cm); | |
632 | this.events = []; | |
633 | } | |
634 | ||
635 | DisplayUpdate.prototype.signal = function(emitter, type) { | |
636 | if (hasHandler(emitter, type)) | |
637 | this.events.push(arguments); | |
638 | }; | |
639 | DisplayUpdate.prototype.finish = function() { | |
640 | for (var i = 0; i < this.events.length; i++) | |
641 | signal.apply(null, this.events[i]); | |
642 | }; | |
643 | ||
644 | function maybeClipScrollbars(cm) { | |
645 | var display = cm.display; | |
646 | if (!display.scrollbarsClipped && display.scroller.offsetWidth) { | |
647 | display.nativeBarWidth = display.scroller.offsetWidth - display.scroller.clientWidth; | |
648 | display.heightForcer.style.height = scrollGap(cm) + "px"; | |
649 | display.sizer.style.marginBottom = -display.nativeBarWidth + "px"; | |
650 | display.sizer.style.borderRightWidth = scrollGap(cm) + "px"; | |
651 | display.scrollbarsClipped = true; | |
652 | } | |
653 | } | |
654 | ||
655 | // Does the actual updating of the line display. Bails out | |
656 | // (returning false) when there is nothing to be done and forced is | |
657 | // false. | |
658 | function updateDisplayIfNeeded(cm, update) { | |
659 | var display = cm.display, doc = cm.doc; | |
660 | ||
661 | if (update.editorIsHidden) { | |
662 | resetView(cm); | |
663 | return false; | |
664 | } | |
665 | ||
666 | // Bail out if the visible area is already rendered and nothing changed. | |
667 | if (!update.force && | |
668 | update.visible.from >= display.viewFrom && update.visible.to <= display.viewTo && | |
669 | (display.updateLineNumbers == null || display.updateLineNumbers >= display.viewTo) && | |
670 | display.renderedView == display.view && countDirtyView(cm) == 0) | |
671 | return false; | |
672 | ||
673 | if (maybeUpdateLineNumberWidth(cm)) { | |
674 | resetView(cm); | |
675 | update.dims = getDimensions(cm); | |
676 | } | |
677 | ||
678 | // Compute a suitable new viewport (from & to) | |
679 | var end = doc.first + doc.size; | |
680 | var from = Math.max(update.visible.from - cm.options.viewportMargin, doc.first); | |
681 | var to = Math.min(end, update.visible.to + cm.options.viewportMargin); | |
682 | if (display.viewFrom < from && from - display.viewFrom < 20) from = Math.max(doc.first, display.viewFrom); | |
683 | if (display.viewTo > to && display.viewTo - to < 20) to = Math.min(end, display.viewTo); | |
684 | if (sawCollapsedSpans) { | |
685 | from = visualLineNo(cm.doc, from); | |
686 | to = visualLineEndNo(cm.doc, to); | |
687 | } | |
688 | ||
689 | var different = from != display.viewFrom || to != display.viewTo || | |
690 | display.lastWrapHeight != update.wrapperHeight || display.lastWrapWidth != update.wrapperWidth; | |
691 | adjustView(cm, from, to); | |
692 | ||
693 | display.viewOffset = heightAtLine(getLine(cm.doc, display.viewFrom)); | |
694 | // Position the mover div to align with the current scroll position | |
695 | cm.display.mover.style.top = display.viewOffset + "px"; | |
696 | ||
697 | var toUpdate = countDirtyView(cm); | |
698 | if (!different && toUpdate == 0 && !update.force && display.renderedView == display.view && | |
699 | (display.updateLineNumbers == null || display.updateLineNumbers >= display.viewTo)) | |
700 | return false; | |
701 | ||
702 | // For big changes, we hide the enclosing element during the | |
703 | // update, since that speeds up the operations on most browsers. | |
704 | var focused = activeElt(); | |
705 | if (toUpdate > 4) display.lineDiv.style.display = "none"; | |
706 | patchDisplay(cm, display.updateLineNumbers, update.dims); | |
707 | if (toUpdate > 4) display.lineDiv.style.display = ""; | |
708 | display.renderedView = display.view; | |
709 | // There might have been a widget with a focused element that got | |
710 | // hidden or updated, if so re-focus it. | |
711 | if (focused && activeElt() != focused && focused.offsetHeight) focused.focus(); | |
712 | ||
713 | // Prevent selection and cursors from interfering with the scroll | |
714 | // width and height. | |
715 | removeChildren(display.cursorDiv); | |
716 | removeChildren(display.selectionDiv); | |
717 | display.gutters.style.height = 0; | |
718 | ||
719 | if (different) { | |
720 | display.lastWrapHeight = update.wrapperHeight; | |
721 | display.lastWrapWidth = update.wrapperWidth; | |
722 | startWorker(cm, 400); | |
723 | } | |
724 | ||
725 | display.updateLineNumbers = null; | |
726 | ||
727 | return true; | |
728 | } | |
729 | ||
730 | function postUpdateDisplay(cm, update) { | |
731 | var force = update.force, viewport = update.viewport; | |
732 | for (var first = true;; first = false) { | |
733 | if (first && cm.options.lineWrapping && update.oldDisplayWidth != displayWidth(cm)) { | |
734 | force = true; | |
735 | } else { | |
736 | force = false; | |
737 | // Clip forced viewport to actual scrollable area. | |
738 | if (viewport && viewport.top != null) | |
739 | viewport = {top: Math.min(cm.doc.height + paddingVert(cm.display) - displayHeight(cm), viewport.top)}; | |
740 | // Updated line heights might result in the drawn area not | |
741 | // actually covering the viewport. Keep looping until it does. | |
742 | update.visible = visibleLines(cm.display, cm.doc, viewport); | |
743 | if (update.visible.from >= cm.display.viewFrom && update.visible.to <= cm.display.viewTo) | |
744 | break; | |
745 | } | |
746 | if (!updateDisplayIfNeeded(cm, update)) break; | |
747 | updateHeightsInViewport(cm); | |
748 | var barMeasure = measureForScrollbars(cm); | |
749 | updateSelection(cm); | |
750 | setDocumentHeight(cm, barMeasure); | |
751 | updateScrollbars(cm, barMeasure); | |
752 | } | |
753 | ||
754 | update.signal(cm, "update", cm); | |
755 | if (cm.display.viewFrom != cm.display.reportedViewFrom || cm.display.viewTo != cm.display.reportedViewTo) { | |
756 | update.signal(cm, "viewportChange", cm, cm.display.viewFrom, cm.display.viewTo); | |
757 | cm.display.reportedViewFrom = cm.display.viewFrom; cm.display.reportedViewTo = cm.display.viewTo; | |
758 | } | |
759 | } | |
760 | ||
761 | function updateDisplaySimple(cm, viewport) { | |
762 | var update = new DisplayUpdate(cm, viewport); | |
763 | if (updateDisplayIfNeeded(cm, update)) { | |
764 | updateHeightsInViewport(cm); | |
765 | postUpdateDisplay(cm, update); | |
766 | var barMeasure = measureForScrollbars(cm); | |
767 | updateSelection(cm); | |
768 | setDocumentHeight(cm, barMeasure); | |
769 | updateScrollbars(cm, barMeasure); | |
770 | update.finish(); | |
771 | } | |
772 | } | |
773 | ||
774 | function setDocumentHeight(cm, measure) { | |
775 | cm.display.sizer.style.minHeight = measure.docHeight + "px"; | |
776 | var total = measure.docHeight + cm.display.barHeight; | |
777 | cm.display.heightForcer.style.top = total + "px"; | |
778 | cm.display.gutters.style.height = Math.max(total + scrollGap(cm), measure.clientHeight) + "px"; | |
779 | } | |
780 | ||
781 | // Read the actual heights of the rendered lines, and update their | |
782 | // stored heights to match. | |
783 | function updateHeightsInViewport(cm) { | |
784 | var display = cm.display; | |
785 | var prevBottom = display.lineDiv.offsetTop; | |
786 | for (var i = 0; i < display.view.length; i++) { | |
787 | var cur = display.view[i], height; | |
788 | if (cur.hidden) continue; | |
789 | if (ie && ie_version < 8) { | |
790 | var bot = cur.node.offsetTop + cur.node.offsetHeight; | |
791 | height = bot - prevBottom; | |
792 | prevBottom = bot; | |
793 | } else { | |
794 | var box = cur.node.getBoundingClientRect(); | |
795 | height = box.bottom - box.top; | |
796 | } | |
797 | var diff = cur.line.height - height; | |
798 | if (height < 2) height = textHeight(display); | |
799 | if (diff > .001 || diff < -.001) { | |
800 | updateLineHeight(cur.line, height); | |
801 | updateWidgetHeight(cur.line); | |
802 | if (cur.rest) for (var j = 0; j < cur.rest.length; j++) | |
803 | updateWidgetHeight(cur.rest[j]); | |
804 | } | |
805 | } | |
806 | } | |
807 | ||
808 | // Read and store the height of line widgets associated with the | |
809 | // given line. | |
810 | function updateWidgetHeight(line) { | |
811 | if (line.widgets) for (var i = 0; i < line.widgets.length; ++i) | |
812 | line.widgets[i].height = line.widgets[i].node.offsetHeight; | |
813 | } | |
814 | ||
815 | // Do a bulk-read of the DOM positions and sizes needed to draw the | |
816 | // view, so that we don't interleave reading and writing to the DOM. | |
817 | function getDimensions(cm) { | |
818 | var d = cm.display, left = {}, width = {}; | |
819 | var gutterLeft = d.gutters.clientLeft; | |
820 | for (var n = d.gutters.firstChild, i = 0; n; n = n.nextSibling, ++i) { | |
821 | left[cm.options.gutters[i]] = n.offsetLeft + n.clientLeft + gutterLeft; | |
822 | width[cm.options.gutters[i]] = n.clientWidth; | |
823 | } | |
824 | return {fixedPos: compensateForHScroll(d), | |
825 | gutterTotalWidth: d.gutters.offsetWidth, | |
826 | gutterLeft: left, | |
827 | gutterWidth: width, | |
828 | wrapperWidth: d.wrapper.clientWidth}; | |
829 | } | |
830 | ||
831 | // Sync the actual display DOM structure with display.view, removing | |
832 | // nodes for lines that are no longer in view, and creating the ones | |
833 | // that are not there yet, and updating the ones that are out of | |
834 | // date. | |
835 | function patchDisplay(cm, updateNumbersFrom, dims) { | |
836 | var display = cm.display, lineNumbers = cm.options.lineNumbers; | |
837 | var container = display.lineDiv, cur = container.firstChild; | |
838 | ||
839 | function rm(node) { | |
840 | var next = node.nextSibling; | |
841 | // Works around a throw-scroll bug in OS X Webkit | |
842 | if (webkit && mac && cm.display.currentWheelTarget == node) | |
843 | node.style.display = "none"; | |
844 | else | |
845 | node.parentNode.removeChild(node); | |
846 | return next; | |
847 | } | |
848 | ||
849 | var view = display.view, lineN = display.viewFrom; | |
850 | // Loop over the elements in the view, syncing cur (the DOM nodes | |
851 | // in display.lineDiv) with the view as we go. | |
852 | for (var i = 0; i < view.length; i++) { | |
853 | var lineView = view[i]; | |
854 | if (lineView.hidden) { | |
855 | } else if (!lineView.node || lineView.node.parentNode != container) { // Not drawn yet | |
856 | var node = buildLineElement(cm, lineView, lineN, dims); | |
857 | container.insertBefore(node, cur); | |
858 | } else { // Already drawn | |
859 | while (cur != lineView.node) cur = rm(cur); | |
860 | var updateNumber = lineNumbers && updateNumbersFrom != null && | |
861 | updateNumbersFrom <= lineN && lineView.lineNumber; | |
862 | if (lineView.changes) { | |
863 | if (indexOf(lineView.changes, "gutter") > -1) updateNumber = false; | |
864 | updateLineForChanges(cm, lineView, lineN, dims); | |
865 | } | |
866 | if (updateNumber) { | |
867 | removeChildren(lineView.lineNumber); | |
868 | lineView.lineNumber.appendChild(document.createTextNode(lineNumberFor(cm.options, lineN))); | |
869 | } | |
870 | cur = lineView.node.nextSibling; | |
871 | } | |
872 | lineN += lineView.size; | |
873 | } | |
874 | while (cur) cur = rm(cur); | |
875 | } | |
876 | ||
877 | // When an aspect of a line changes, a string is added to | |
878 | // lineView.changes. This updates the relevant part of the line's | |
879 | // DOM structure. | |
880 | function updateLineForChanges(cm, lineView, lineN, dims) { | |
881 | for (var j = 0; j < lineView.changes.length; j++) { | |
882 | var type = lineView.changes[j]; | |
883 | if (type == "text") updateLineText(cm, lineView); | |
884 | else if (type == "gutter") updateLineGutter(cm, lineView, lineN, dims); | |
885 | else if (type == "class") updateLineClasses(lineView); | |
886 | else if (type == "widget") updateLineWidgets(cm, lineView, dims); | |
887 | } | |
888 | lineView.changes = null; | |
889 | } | |
890 | ||
891 | // Lines with gutter elements, widgets or a background class need to | |
892 | // be wrapped, and have the extra elements added to the wrapper div | |
893 | function ensureLineWrapped(lineView) { | |
894 | if (lineView.node == lineView.text) { | |
895 | lineView.node = elt("div", null, null, "position: relative"); | |
896 | if (lineView.text.parentNode) | |
897 | lineView.text.parentNode.replaceChild(lineView.node, lineView.text); | |
898 | lineView.node.appendChild(lineView.text); | |
899 | if (ie && ie_version < 8) lineView.node.style.zIndex = 2; | |
900 | } | |
901 | return lineView.node; | |
902 | } | |
903 | ||
904 | function updateLineBackground(lineView) { | |
905 | var cls = lineView.bgClass ? lineView.bgClass + " " + (lineView.line.bgClass || "") : lineView.line.bgClass; | |
906 | if (cls) cls += " CodeMirror-linebackground"; | |
907 | if (lineView.background) { | |
908 | if (cls) lineView.background.className = cls; | |
909 | else { lineView.background.parentNode.removeChild(lineView.background); lineView.background = null; } | |
910 | } else if (cls) { | |
911 | var wrap = ensureLineWrapped(lineView); | |
912 | lineView.background = wrap.insertBefore(elt("div", null, cls), wrap.firstChild); | |
913 | } | |
914 | } | |
915 | ||
916 | // Wrapper around buildLineContent which will reuse the structure | |
917 | // in display.externalMeasured when possible. | |
918 | function getLineContent(cm, lineView) { | |
919 | var ext = cm.display.externalMeasured; | |
920 | if (ext && ext.line == lineView.line) { | |
921 | cm.display.externalMeasured = null; | |
922 | lineView.measure = ext.measure; | |
923 | return ext.built; | |
924 | } | |
925 | return buildLineContent(cm, lineView); | |
926 | } | |
927 | ||
928 | // Redraw the line's text. Interacts with the background and text | |
929 | // classes because the mode may output tokens that influence these | |
930 | // classes. | |
931 | function updateLineText(cm, lineView) { | |
932 | var cls = lineView.text.className; | |
933 | var built = getLineContent(cm, lineView); | |
934 | if (lineView.text == lineView.node) lineView.node = built.pre; | |
935 | lineView.text.parentNode.replaceChild(built.pre, lineView.text); | |
936 | lineView.text = built.pre; | |
937 | if (built.bgClass != lineView.bgClass || built.textClass != lineView.textClass) { | |
938 | lineView.bgClass = built.bgClass; | |
939 | lineView.textClass = built.textClass; | |
940 | updateLineClasses(lineView); | |
941 | } else if (cls) { | |
942 | lineView.text.className = cls; | |
943 | } | |
944 | } | |
945 | ||
946 | function updateLineClasses(lineView) { | |
947 | updateLineBackground(lineView); | |
948 | if (lineView.line.wrapClass) | |
949 | ensureLineWrapped(lineView).className = lineView.line.wrapClass; | |
950 | else if (lineView.node != lineView.text) | |
951 | lineView.node.className = ""; | |
952 | var textClass = lineView.textClass ? lineView.textClass + " " + (lineView.line.textClass || "") : lineView.line.textClass; | |
953 | lineView.text.className = textClass || ""; | |
954 | } | |
955 | ||
956 | function updateLineGutter(cm, lineView, lineN, dims) { | |
957 | if (lineView.gutter) { | |
958 | lineView.node.removeChild(lineView.gutter); | |
959 | lineView.gutter = null; | |
960 | } | |
961 | var markers = lineView.line.gutterMarkers; | |
962 | if (cm.options.lineNumbers || markers) { | |
963 | var wrap = ensureLineWrapped(lineView); | |
964 | var gutterWrap = lineView.gutter = elt("div", null, "CodeMirror-gutter-wrapper", "left: " + | |
965 | (cm.options.fixedGutter ? dims.fixedPos : -dims.gutterTotalWidth) + | |
966 | "px; width: " + dims.gutterTotalWidth + "px"); | |
967 | cm.display.input.setUneditable(gutterWrap); | |
968 | wrap.insertBefore(gutterWrap, lineView.text); | |
969 | if (lineView.line.gutterClass) | |
970 | gutterWrap.className += " " + lineView.line.gutterClass; | |
971 | if (cm.options.lineNumbers && (!markers || !markers["CodeMirror-linenumbers"])) | |
972 | lineView.lineNumber = gutterWrap.appendChild( | |
973 | elt("div", lineNumberFor(cm.options, lineN), | |
974 | "CodeMirror-linenumber CodeMirror-gutter-elt", | |
975 | "left: " + dims.gutterLeft["CodeMirror-linenumbers"] + "px; width: " | |
976 | + cm.display.lineNumInnerWidth + "px")); | |
977 | if (markers) for (var k = 0; k < cm.options.gutters.length; ++k) { | |
978 | var id = cm.options.gutters[k], found = markers.hasOwnProperty(id) && markers[id]; | |
979 | if (found) | |
980 | gutterWrap.appendChild(elt("div", [found], "CodeMirror-gutter-elt", "left: " + | |
981 | dims.gutterLeft[id] + "px; width: " + dims.gutterWidth[id] + "px")); | |
982 | } | |
983 | } | |
984 | } | |
985 | ||
986 | function updateLineWidgets(cm, lineView, dims) { | |
987 | if (lineView.alignable) lineView.alignable = null; | |
988 | for (var node = lineView.node.firstChild, next; node; node = next) { | |
989 | var next = node.nextSibling; | |
990 | if (node.className == "CodeMirror-linewidget") | |
991 | lineView.node.removeChild(node); | |
992 | } | |
993 | insertLineWidgets(cm, lineView, dims); | |
994 | } | |
995 | ||
996 | // Build a line's DOM representation from scratch | |
997 | function buildLineElement(cm, lineView, lineN, dims) { | |
998 | var built = getLineContent(cm, lineView); | |
999 | lineView.text = lineView.node = built.pre; | |
1000 | if (built.bgClass) lineView.bgClass = built.bgClass; | |
1001 | if (built.textClass) lineView.textClass = built.textClass; | |
1002 | ||
1003 | updateLineClasses(lineView); | |
1004 | updateLineGutter(cm, lineView, lineN, dims); | |
1005 | insertLineWidgets(cm, lineView, dims); | |
1006 | return lineView.node; | |
1007 | } | |
1008 | ||
1009 | // A lineView may contain multiple logical lines (when merged by | |
1010 | // collapsed spans). The widgets for all of them need to be drawn. | |
1011 | function insertLineWidgets(cm, lineView, dims) { | |
1012 | insertLineWidgetsFor(cm, lineView.line, lineView, dims, true); | |
1013 | if (lineView.rest) for (var i = 0; i < lineView.rest.length; i++) | |
1014 | insertLineWidgetsFor(cm, lineView.rest[i], lineView, dims, false); | |
1015 | } | |
1016 | ||
1017 | function insertLineWidgetsFor(cm, line, lineView, dims, allowAbove) { | |
1018 | if (!line.widgets) return; | |
1019 | var wrap = ensureLineWrapped(lineView); | |
1020 | for (var i = 0, ws = line.widgets; i < ws.length; ++i) { | |
1021 | var widget = ws[i], node = elt("div", [widget.node], "CodeMirror-linewidget"); | |
1022 | if (!widget.handleMouseEvents) node.setAttribute("cm-ignore-events", "true"); | |
1023 | positionLineWidget(widget, node, lineView, dims); | |
1024 | cm.display.input.setUneditable(node); | |
1025 | if (allowAbove && widget.above) | |
1026 | wrap.insertBefore(node, lineView.gutter || lineView.text); | |
1027 | else | |
1028 | wrap.appendChild(node); | |
1029 | signalLater(widget, "redraw"); | |
1030 | } | |
1031 | } | |
1032 | ||
1033 | function positionLineWidget(widget, node, lineView, dims) { | |
1034 | if (widget.noHScroll) { | |
1035 | (lineView.alignable || (lineView.alignable = [])).push(node); | |
1036 | var width = dims.wrapperWidth; | |
1037 | node.style.left = dims.fixedPos + "px"; | |
1038 | if (!widget.coverGutter) { | |
1039 | width -= dims.gutterTotalWidth; | |
1040 | node.style.paddingLeft = dims.gutterTotalWidth + "px"; | |
1041 | } | |
1042 | node.style.width = width + "px"; | |
1043 | } | |
1044 | if (widget.coverGutter) { | |
1045 | node.style.zIndex = 5; | |
1046 | node.style.position = "relative"; | |
1047 | if (!widget.noHScroll) node.style.marginLeft = -dims.gutterTotalWidth + "px"; | |
1048 | } | |
1049 | } | |
1050 | ||
1051 | // POSITION OBJECT | |
1052 | ||
1053 | // A Pos instance represents a position within the text. | |
1054 | var Pos = CodeMirror.Pos = function(line, ch) { | |
1055 | if (!(this instanceof Pos)) return new Pos(line, ch); | |
1056 | this.line = line; this.ch = ch; | |
1057 | }; | |
1058 | ||
1059 | // Compare two positions, return 0 if they are the same, a negative | |
1060 | // number when a is less, and a positive number otherwise. | |
1061 | var cmp = CodeMirror.cmpPos = function(a, b) { return a.line - b.line || a.ch - b.ch; }; | |
1062 | ||
1063 | function copyPos(x) {return Pos(x.line, x.ch);} | |
1064 | function maxPos(a, b) { return cmp(a, b) < 0 ? b : a; } | |
1065 | function minPos(a, b) { return cmp(a, b) < 0 ? a : b; } | |
1066 | ||
1067 | // INPUT HANDLING | |
1068 | ||
1069 | function ensureFocus(cm) { | |
1070 | if (!cm.state.focused) { cm.display.input.focus(); onFocus(cm); } | |
1071 | } | |
1072 | ||
1073 | function isReadOnly(cm) { | |
1074 | return cm.options.readOnly || cm.doc.cantEdit; | |
1075 | } | |
1076 | ||
1077 | // This will be set to an array of strings when copying, so that, | |
1078 | // when pasting, we know what kind of selections the copied text | |
1079 | // was made out of. | |
1080 | var lastCopied = null; | |
1081 | ||
1082 | function applyTextInput(cm, inserted, deleted, sel, origin) { | |
1083 | var doc = cm.doc; | |
1084 | cm.display.shift = false; | |
1085 | if (!sel) sel = doc.sel; | |
1086 | ||
1087 | var textLines = splitLines(inserted), multiPaste = null; | |
1088 | // When pasing N lines into N selections, insert one line per selection | |
1089 | if (cm.state.pasteIncoming && sel.ranges.length > 1) { | |
1090 | if (lastCopied && lastCopied.join("\n") == inserted) | |
1091 | multiPaste = sel.ranges.length % lastCopied.length == 0 && map(lastCopied, splitLines); | |
1092 | else if (textLines.length == sel.ranges.length) | |
1093 | multiPaste = map(textLines, function(l) { return [l]; }); | |
1094 | } | |
1095 | ||
1096 | // Normal behavior is to insert the new text into every selection | |
1097 | for (var i = sel.ranges.length - 1; i >= 0; i--) { | |
1098 | var range = sel.ranges[i]; | |
1099 | var from = range.from(), to = range.to(); | |
1100 | if (range.empty()) { | |
1101 | if (deleted && deleted > 0) // Handle deletion | |
1102 | from = Pos(from.line, from.ch - deleted); | |
1103 | else if (cm.state.overwrite && !cm.state.pasteIncoming) // Handle overwrite | |
1104 | to = Pos(to.line, Math.min(getLine(doc, to.line).text.length, to.ch + lst(textLines).length)); | |
1105 | } | |
1106 | var updateInput = cm.curOp.updateInput; | |
1107 | var changeEvent = {from: from, to: to, text: multiPaste ? multiPaste[i % multiPaste.length] : textLines, | |
1108 | origin: origin || (cm.state.pasteIncoming ? "paste" : cm.state.cutIncoming ? "cut" : "+input")}; | |
1109 | makeChange(cm.doc, changeEvent); | |
1110 | signalLater(cm, "inputRead", cm, changeEvent); | |
1111 | // When an 'electric' character is inserted, immediately trigger a reindent | |
1112 | if (inserted && !cm.state.pasteIncoming && cm.options.electricChars && | |
1113 | cm.options.smartIndent && range.head.ch < 100 && | |
1114 | (!i || sel.ranges[i - 1].head.line != range.head.line)) { | |
1115 | var mode = cm.getModeAt(range.head); | |
1116 | var end = changeEnd(changeEvent); | |
1117 | var indented = false; | |
1118 | if (mode.electricChars) { | |
1119 | for (var j = 0; j < mode.electricChars.length; j++) | |
1120 | if (inserted.indexOf(mode.electricChars.charAt(j)) > -1) { | |
1121 | indented = indentLine(cm, end.line, "smart"); | |
1122 | break; | |
1123 | } | |
1124 | } else if (mode.electricInput) { | |
1125 | if (mode.electricInput.test(getLine(doc, end.line).text.slice(0, end.ch))) | |
1126 | indented = indentLine(cm, end.line, "smart"); | |
1127 | } | |
1128 | if (indented) signalLater(cm, "electricInput", cm, end.line); | |
1129 | } | |
1130 | } | |
1131 | ensureCursorVisible(cm); | |
1132 | cm.curOp.updateInput = updateInput; | |
1133 | cm.curOp.typing = true; | |
1134 | cm.state.pasteIncoming = cm.state.cutIncoming = false; | |
1135 | } | |
1136 | ||
1137 | function copyableRanges(cm) { | |
1138 | var text = [], ranges = []; | |
1139 | for (var i = 0; i < cm.doc.sel.ranges.length; i++) { | |
1140 | var line = cm.doc.sel.ranges[i].head.line; | |
1141 | var lineRange = {anchor: Pos(line, 0), head: Pos(line + 1, 0)}; | |
1142 | ranges.push(lineRange); | |
1143 | text.push(cm.getRange(lineRange.anchor, lineRange.head)); | |
1144 | } | |
1145 | return {text: text, ranges: ranges}; | |
1146 | } | |
1147 | ||
1148 | function disableBrowserMagic(field) { | |
1149 | field.setAttribute("autocorrect", "off"); | |
1150 | field.setAttribute("autocapitalize", "off"); | |
1151 | field.setAttribute("spellcheck", "false"); | |
1152 | } | |
1153 | ||
1154 | // TEXTAREA INPUT STYLE | |
1155 | ||
1156 | function TextareaInput(cm) { | |
1157 | this.cm = cm; | |
1158 | // See input.poll and input.reset | |
1159 | this.prevInput = ""; | |
1160 | ||
1161 | // Flag that indicates whether we expect input to appear real soon | |
1162 | // now (after some event like 'keypress' or 'input') and are | |
1163 | // polling intensively. | |
1164 | this.pollingFast = false; | |
1165 | // Self-resetting timeout for the poller | |
1166 | this.polling = new Delayed(); | |
1167 | // Tracks when input.reset has punted to just putting a short | |
1168 | // string into the textarea instead of the full selection. | |
1169 | this.inaccurateSelection = false; | |
1170 | // Used to work around IE issue with selection being forgotten when focus moves away from textarea | |
1171 | this.hasSelection = false; | |
1172 | this.composing = null; | |
1173 | }; | |
1174 | ||
1175 | function hiddenTextarea() { | |
1176 | var te = elt("textarea", null, null, "position: absolute; padding: 0; width: 1px; height: 1em; outline: none"); | |
1177 | var div = elt("div", [te], null, "overflow: hidden; position: relative; width: 3px; height: 0px;"); | |
1178 | // The textarea is kept positioned near the cursor to prevent the | |
1179 | // fact that it'll be scrolled into view on input from scrolling | |
1180 | // our fake cursor out of view. On webkit, when wrap=off, paste is | |
1181 | // very slow. So make the area wide instead. | |
1182 | if (webkit) te.style.width = "1000px"; | |
1183 | else te.setAttribute("wrap", "off"); | |
1184 | // If border: 0; -- iOS fails to open keyboard (issue #1287) | |
1185 | if (ios) te.style.border = "1px solid black"; | |
1186 | disableBrowserMagic(te); | |
1187 | return div; | |
1188 | } | |
1189 | ||
1190 | TextareaInput.prototype = copyObj({ | |
1191 | init: function(display) { | |
1192 | var input = this, cm = this.cm; | |
1193 | ||
1194 | // Wraps and hides input textarea | |
1195 | var div = this.wrapper = hiddenTextarea(); | |
1196 | // The semihidden textarea that is focused when the editor is | |
1197 | // focused, and receives input. | |
1198 | var te = this.textarea = div.firstChild; | |
1199 | display.wrapper.insertBefore(div, display.wrapper.firstChild); | |
1200 | ||
1201 | // Needed to hide big blue blinking cursor on Mobile Safari (doesn't seem to work in iOS 8 anymore) | |
1202 | if (ios) te.style.width = "0px"; | |
1203 | ||
1204 | on(te, "input", function() { | |
1205 | if (ie && ie_version >= 9 && input.hasSelection) input.hasSelection = null; | |
1206 | input.poll(); | |
1207 | }); | |
1208 | ||
1209 | on(te, "paste", function() { | |
1210 | // Workaround for webkit bug https://bugs.webkit.org/show_bug.cgi?id=90206 | |
1211 | // Add a char to the end of textarea before paste occur so that | |
1212 | // selection doesn't span to the end of textarea. | |
1213 | if (webkit && !cm.state.fakedLastChar && !(new Date - cm.state.lastMiddleDown < 200)) { | |
1214 | var start = te.selectionStart, end = te.selectionEnd; | |
1215 | te.value += "$"; | |
1216 | // The selection end needs to be set before the start, otherwise there | |
1217 | // can be an intermediate non-empty selection between the two, which | |
1218 | // can override the middle-click paste buffer on linux and cause the | |
1219 | // wrong thing to get pasted. | |
1220 | te.selectionEnd = end; | |
1221 | te.selectionStart = start; | |
1222 | cm.state.fakedLastChar = true; | |
1223 | } | |
1224 | cm.state.pasteIncoming = true; | |
1225 | input.fastPoll(); | |
1226 | }); | |
1227 | ||
1228 | function prepareCopyCut(e) { | |
1229 | if (cm.somethingSelected()) { | |
1230 | lastCopied = cm.getSelections(); | |
1231 | if (input.inaccurateSelection) { | |
1232 | input.prevInput = ""; | |
1233 | input.inaccurateSelection = false; | |
1234 | te.value = lastCopied.join("\n"); | |
1235 | selectInput(te); | |
1236 | } | |
1237 | } else if (!cm.options.lineWiseCopyCut) { | |
1238 | return; | |
1239 | } else { | |
1240 | var ranges = copyableRanges(cm); | |
1241 | lastCopied = ranges.text; | |
1242 | if (e.type == "cut") { | |
1243 | cm.setSelections(ranges.ranges, null, sel_dontScroll); | |
1244 | } else { | |
1245 | input.prevInput = ""; | |
1246 | te.value = ranges.text.join("\n"); | |
1247 | selectInput(te); | |
1248 | } | |
1249 | } | |
1250 | if (e.type == "cut") cm.state.cutIncoming = true; | |
1251 | } | |
1252 | on(te, "cut", prepareCopyCut); | |
1253 | on(te, "copy", prepareCopyCut); | |
1254 | ||
1255 | on(display.scroller, "paste", function(e) { | |
1256 | if (eventInWidget(display, e)) return; | |
1257 | cm.state.pasteIncoming = true; | |
1258 | input.focus(); | |
1259 | }); | |
1260 | ||
1261 | // Prevent normal selection in the editor (we handle our own) | |
1262 | on(display.lineSpace, "selectstart", function(e) { | |
1263 | if (!eventInWidget(display, e)) e_preventDefault(e); | |
1264 | }); | |
1265 | ||
1266 | on(te, "compositionstart", function() { | |
1267 | var start = cm.getCursor("from"); | |
1268 | input.composing = { | |
1269 | start: start, | |
1270 | range: cm.markText(start, cm.getCursor("to"), {className: "CodeMirror-composing"}) | |
1271 | }; | |
1272 | }); | |
1273 | on(te, "compositionend", function() { | |
1274 | if (input.composing) { | |
1275 | input.poll(); | |
1276 | input.composing.range.clear(); | |
1277 | input.composing = null; | |
1278 | } | |
1279 | }); | |
1280 | }, | |
1281 | ||
1282 | prepareSelection: function() { | |
1283 | // Redraw the selection and/or cursor | |
1284 | var cm = this.cm, display = cm.display, doc = cm.doc; | |
1285 | var result = prepareSelection(cm); | |
1286 | ||
1287 | // Move the hidden textarea near the cursor to prevent scrolling artifacts | |
1288 | if (cm.options.moveInputWithCursor) { | |
1289 | var headPos = cursorCoords(cm, doc.sel.primary().head, "div"); | |
1290 | var wrapOff = display.wrapper.getBoundingClientRect(), lineOff = display.lineDiv.getBoundingClientRect(); | |
1291 | result.teTop = Math.max(0, Math.min(display.wrapper.clientHeight - 10, | |
1292 | headPos.top + lineOff.top - wrapOff.top)); | |
1293 | result.teLeft = Math.max(0, Math.min(display.wrapper.clientWidth - 10, | |
1294 | headPos.left + lineOff.left - wrapOff.left)); | |
1295 | } | |
1296 | ||
1297 | return result; | |
1298 | }, | |
1299 | ||
1300 | showSelection: function(drawn) { | |
1301 | var cm = this.cm, display = cm.display; | |
1302 | removeChildrenAndAdd(display.cursorDiv, drawn.cursors); | |
1303 | removeChildrenAndAdd(display.selectionDiv, drawn.selection); | |
1304 | if (drawn.teTop != null) { | |
1305 | this.wrapper.style.top = drawn.teTop + "px"; | |
1306 | this.wrapper.style.left = drawn.teLeft + "px"; | |
1307 | } | |
1308 | }, | |
1309 | ||
1310 | // Reset the input to correspond to the selection (or to be empty, | |
1311 | // when not typing and nothing is selected) | |
1312 | reset: function(typing) { | |
1313 | if (this.contextMenuPending) return; | |
1314 | var minimal, selected, cm = this.cm, doc = cm.doc; | |
1315 | if (cm.somethingSelected()) { | |
1316 | this.prevInput = ""; | |
1317 | var range = doc.sel.primary(); | |
1318 | minimal = hasCopyEvent && | |
1319 | (range.to().line - range.from().line > 100 || (selected = cm.getSelection()).length > 1000); | |
1320 | var content = minimal ? "-" : selected || cm.getSelection(); | |
1321 | this.textarea.value = content; | |
1322 | if (cm.state.focused) selectInput(this.textarea); | |
1323 | if (ie && ie_version >= 9) this.hasSelection = content; | |
1324 | } else if (!typing) { | |
1325 | this.prevInput = this.textarea.value = ""; | |
1326 | if (ie && ie_version >= 9) this.hasSelection = null; | |
1327 | } | |
1328 | this.inaccurateSelection = minimal; | |
1329 | }, | |
1330 | ||
1331 | getField: function() { return this.textarea; }, | |
1332 | ||
1333 | supportsTouch: function() { return false; }, | |
1334 | ||
1335 | focus: function() { | |
1336 | if (this.cm.options.readOnly != "nocursor" && (!mobile || activeElt() != this.textarea)) { | |
1337 | try { this.textarea.focus(); } | |
1338 | catch (e) {} // IE8 will throw if the textarea is display: none or not in DOM | |
1339 | } | |
1340 | }, | |
1341 | ||
1342 | blur: function() { this.textarea.blur(); }, | |
1343 | ||
1344 | resetPosition: function() { | |
1345 | this.wrapper.style.top = this.wrapper.style.left = 0; | |
1346 | }, | |
1347 | ||
1348 | receivedFocus: function() { this.slowPoll(); }, | |
1349 | ||
1350 | // Poll for input changes, using the normal rate of polling. This | |
1351 | // runs as long as the editor is focused. | |
1352 | slowPoll: function() { | |
1353 | var input = this; | |
1354 | if (input.pollingFast) return; | |
1355 | input.polling.set(this.cm.options.pollInterval, function() { | |
1356 | input.poll(); | |
1357 | if (input.cm.state.focused) input.slowPoll(); | |
1358 | }); | |
1359 | }, | |
1360 | ||
1361 | // When an event has just come in that is likely to add or change | |
1362 | // something in the input textarea, we poll faster, to ensure that | |
1363 | // the change appears on the screen quickly. | |
1364 | fastPoll: function() { | |
1365 | var missed = false, input = this; | |
1366 | input.pollingFast = true; | |
1367 | function p() { | |
1368 | var changed = input.poll(); | |
1369 | if (!changed && !missed) {missed = true; input.polling.set(60, p);} | |
1370 | else {input.pollingFast = false; input.slowPoll();} | |
1371 | } | |
1372 | input.polling.set(20, p); | |
1373 | }, | |
1374 | ||
1375 | // Read input from the textarea, and update the document to match. | |
1376 | // When something is selected, it is present in the textarea, and | |
1377 | // selected (unless it is huge, in which case a placeholder is | |
1378 | // used). When nothing is selected, the cursor sits after previously | |
1379 | // seen text (can be empty), which is stored in prevInput (we must | |
1380 | // not reset the textarea when typing, because that breaks IME). | |
1381 | poll: function() { | |
1382 | var cm = this.cm, input = this.textarea, prevInput = this.prevInput; | |
1383 | // Since this is called a *lot*, try to bail out as cheaply as | |
1384 | // possible when it is clear that nothing happened. hasSelection | |
1385 | // will be the case when there is a lot of text in the textarea, | |
1386 | // in which case reading its value would be expensive. | |
1387 | if (!cm.state.focused || (hasSelection(input) && !prevInput) || | |
1388 | isReadOnly(cm) || cm.options.disableInput || cm.state.keySeq) | |
1389 | return false; | |
1390 | // See paste handler for more on the fakedLastChar kludge | |
1391 | if (cm.state.pasteIncoming && cm.state.fakedLastChar) { | |
1392 | input.value = input.value.substring(0, input.value.length - 1); | |
1393 | cm.state.fakedLastChar = false; | |
1394 | } | |
1395 | var text = input.value; | |
1396 | // If nothing changed, bail. | |
1397 | if (text == prevInput && !cm.somethingSelected()) return false; | |
1398 | // Work around nonsensical selection resetting in IE9/10, and | |
1399 | // inexplicable appearance of private area unicode characters on | |
1400 | // some key combos in Mac (#2689). | |
1401 | if (ie && ie_version >= 9 && this.hasSelection === text || | |
1402 | mac && /[\uf700-\uf7ff]/.test(text)) { | |
1403 | cm.display.input.reset(); | |
1404 | return false; | |
1405 | } | |
1406 | ||
1407 | if (cm.doc.sel == cm.display.selForContextMenu) { | |
1408 | var first = text.charCodeAt(0); | |
1409 | if (first == 0x200b && !prevInput) prevInput = "\u200b"; | |
1410 | if (first == 0x21da) { this.reset(); return this.cm.execCommand("undo"); } | |
1411 | } | |
1412 | // Find the part of the input that is actually new | |
1413 | var same = 0, l = Math.min(prevInput.length, text.length); | |
1414 | while (same < l && prevInput.charCodeAt(same) == text.charCodeAt(same)) ++same; | |
1415 | ||
1416 | var self = this; | |
1417 | runInOp(cm, function() { | |
1418 | applyTextInput(cm, text.slice(same), prevInput.length - same, | |
1419 | null, self.composing ? "*compose" : null); | |
1420 | ||
1421 | // Don't leave long text in the textarea, since it makes further polling slow | |
1422 | if (text.length > 1000 || text.indexOf("\n") > -1) input.value = self.prevInput = ""; | |
1423 | else self.prevInput = text; | |
1424 | ||
1425 | if (self.composing) { | |
1426 | self.composing.range.clear(); | |
1427 | self.composing.range = cm.markText(self.composing.start, cm.getCursor("to"), | |
1428 | {className: "CodeMirror-composing"}); | |
1429 | } | |
1430 | }); | |
1431 | return true; | |
1432 | }, | |
1433 | ||
1434 | ensurePolled: function() { | |
1435 | if (this.pollingFast && this.poll()) this.pollingFast = false; | |
1436 | }, | |
1437 | ||
1438 | onKeyPress: function() { | |
1439 | if (ie && ie_version >= 9) this.hasSelection = null; | |
1440 | this.fastPoll(); | |
1441 | }, | |
1442 | ||
1443 | onContextMenu: function(e) { | |
1444 | var input = this, cm = input.cm, display = cm.display, te = input.textarea; | |
1445 | var pos = posFromMouse(cm, e), scrollPos = display.scroller.scrollTop; | |
1446 | if (!pos || presto) return; // Opera is difficult. | |
1447 | ||
1448 | // Reset the current text selection only if the click is done outside of the selection | |
1449 | // and 'resetSelectionOnContextMenu' option is true. | |
1450 | var reset = cm.options.resetSelectionOnContextMenu; | |
1451 | if (reset && cm.doc.sel.contains(pos) == -1) | |
1452 | operation(cm, setSelection)(cm.doc, simpleSelection(pos), sel_dontScroll); | |
1453 | ||
1454 | var oldCSS = te.style.cssText; | |
1455 | input.wrapper.style.position = "absolute"; | |
1456 | te.style.cssText = "position: fixed; width: 30px; height: 30px; top: " + (e.clientY - 5) + | |
1457 | "px; left: " + (e.clientX - 5) + "px; z-index: 1000; background: " + | |
1458 | (ie ? "rgba(255, 255, 255, .05)" : "transparent") + | |
1459 | "; outline: none; border-width: 0; outline: none; overflow: hidden; opacity: .05; filter: alpha(opacity=5);"; | |
1460 | if (webkit) var oldScrollY = window.scrollY; // Work around Chrome issue (#2712) | |
1461 | display.input.focus(); | |
1462 | if (webkit) window.scrollTo(null, oldScrollY); | |
1463 | display.input.reset(); | |
1464 | // Adds "Select all" to context menu in FF | |
1465 | if (!cm.somethingSelected()) te.value = input.prevInput = " "; | |
1466 | input.contextMenuPending = true; | |
1467 | display.selForContextMenu = cm.doc.sel; | |
1468 | clearTimeout(display.detectingSelectAll); | |
1469 | ||
1470 | // Select-all will be greyed out if there's nothing to select, so | |
1471 | // this adds a zero-width space so that we can later check whether | |
1472 | // it got selected. | |
1473 | function prepareSelectAllHack() { | |
1474 | if (te.selectionStart != null) { | |
1475 | var selected = cm.somethingSelected(); | |
1476 | var extval = "\u200b" + (selected ? te.value : ""); | |
1477 | te.value = "\u21da"; // Used to catch context-menu undo | |
1478 | te.value = extval; | |
1479 | input.prevInput = selected ? "" : "\u200b"; | |
1480 | te.selectionStart = 1; te.selectionEnd = extval.length; | |
1481 | // Re-set this, in case some other handler touched the | |
1482 | // selection in the meantime. | |
1483 | display.selForContextMenu = cm.doc.sel; | |
1484 | } | |
1485 | } | |
1486 | function rehide() { | |
1487 | input.contextMenuPending = false; | |
1488 | input.wrapper.style.position = "relative"; | |
1489 | te.style.cssText = oldCSS; | |
1490 | if (ie && ie_version < 9) display.scrollbars.setScrollTop(display.scroller.scrollTop = scrollPos); | |
1491 | ||
1492 | // Try to detect the user choosing select-all | |
1493 | if (te.selectionStart != null) { | |
1494 | if (!ie || (ie && ie_version < 9)) prepareSelectAllHack(); | |
1495 | var i = 0, poll = function() { | |
1496 | if (display.selForContextMenu == cm.doc.sel && te.selectionStart == 0 && | |
1497 | te.selectionEnd > 0 && input.prevInput == "\u200b") | |
1498 | operation(cm, commands.selectAll)(cm); | |
1499 | else if (i++ < 10) display.detectingSelectAll = setTimeout(poll, 500); | |
1500 | else display.input.reset(); | |
1501 | }; | |
1502 | display.detectingSelectAll = setTimeout(poll, 200); | |
1503 | } | |
1504 | } | |
1505 | ||
1506 | if (ie && ie_version >= 9) prepareSelectAllHack(); | |
1507 | if (captureRightClick) { | |
1508 | e_stop(e); | |
1509 | var mouseup = function() { | |
1510 | off(window, "mouseup", mouseup); | |
1511 | setTimeout(rehide, 20); | |
1512 | }; | |
1513 | on(window, "mouseup", mouseup); | |
1514 | } else { | |
1515 | setTimeout(rehide, 50); | |
1516 | } | |
1517 | }, | |
1518 | ||
1519 | setUneditable: nothing, | |
1520 | ||
1521 | needsContentAttribute: false | |
1522 | }, TextareaInput.prototype); | |
1523 | ||
1524 | // CONTENTEDITABLE INPUT STYLE | |
1525 | ||
1526 | function ContentEditableInput(cm) { | |
1527 | this.cm = cm; | |
1528 | this.lastAnchorNode = this.lastAnchorOffset = this.lastFocusNode = this.lastFocusOffset = null; | |
1529 | this.polling = new Delayed(); | |
1530 | this.gracePeriod = false; | |
1531 | } | |
1532 | ||
1533 | ContentEditableInput.prototype = copyObj({ | |
1534 | init: function(display) { | |
1535 | var input = this, cm = input.cm; | |
1536 | var div = input.div = display.lineDiv; | |
1537 | div.contentEditable = "true"; | |
1538 | disableBrowserMagic(div); | |
1539 | ||
1540 | on(div, "paste", function(e) { | |
1541 | var pasted = e.clipboardData && e.clipboardData.getData("text/plain"); | |
1542 | if (pasted) { | |
1543 | e.preventDefault(); | |
1544 | cm.replaceSelection(pasted, null, "paste"); | |
1545 | } | |
1546 | }); | |
1547 | ||
1548 | on(div, "compositionstart", function(e) { | |
1549 | var data = e.data; | |
1550 | input.composing = {sel: cm.doc.sel, data: data, startData: data}; | |
1551 | if (!data) return; | |
1552 | var prim = cm.doc.sel.primary(); | |
1553 | var line = cm.getLine(prim.head.line); | |
1554 | var found = line.indexOf(data, Math.max(0, prim.head.ch - data.length)); | |
1555 | if (found > -1 && found <= prim.head.ch) | |
1556 | input.composing.sel = simpleSelection(Pos(prim.head.line, found), | |
1557 | Pos(prim.head.line, found + data.length)); | |
1558 | }); | |
1559 | on(div, "compositionupdate", function(e) { | |
1560 | input.composing.data = e.data; | |
1561 | }); | |
1562 | on(div, "compositionend", function(e) { | |
1563 | var ours = input.composing; | |
1564 | if (!ours) return; | |
1565 | if (e.data != ours.startData && !/\u200b/.test(e.data)) | |
1566 | ours.data = e.data; | |
1567 | // Need a small delay to prevent other code (input event, | |
1568 | // selection polling) from doing damage when fired right after | |
1569 | // compositionend. | |
1570 | setTimeout(function() { | |
1571 | if (!ours.handled) | |
1572 | input.applyComposition(ours); | |
1573 | if (input.composing == ours) | |
1574 | input.composing = null; | |
1575 | }, 50); | |
1576 | }); | |
1577 | ||
1578 | on(div, "touchstart", function() { | |
1579 | input.forceCompositionEnd(); | |
1580 | }); | |
1581 | ||
1582 | on(div, "input", function() { | |
1583 | if (input.composing) return; | |
1584 | if (!input.pollContent()) | |
1585 | runInOp(input.cm, function() {regChange(cm);}); | |
1586 | }); | |
1587 | ||
1588 | function onCopyCut(e) { | |
1589 | if (cm.somethingSelected()) { | |
1590 | lastCopied = cm.getSelections(); | |
1591 | if (e.type == "cut") cm.replaceSelection("", null, "cut"); | |
1592 | } else if (!cm.options.lineWiseCopyCut) { | |
1593 | return; | |
1594 | } else { | |
1595 | var ranges = copyableRanges(cm); | |
1596 | lastCopied = ranges.text; | |
1597 | if (e.type == "cut") { | |
1598 | cm.operation(function() { | |
1599 | cm.setSelections(ranges.ranges, 0, sel_dontScroll); | |
1600 | cm.replaceSelection("", null, "cut"); | |
1601 | }); | |
1602 | } | |
1603 | } | |
1604 | // iOS exposes the clipboard API, but seems to discard content inserted into it | |
1605 | if (e.clipboardData && !ios) { | |
1606 | e.preventDefault(); | |
1607 | e.clipboardData.clearData(); | |
1608 | e.clipboardData.setData("text/plain", lastCopied.join("\n")); | |
1609 | } else { | |
1610 | // Old-fashioned briefly-focus-a-textarea hack | |
1611 | var kludge = hiddenTextarea(), te = kludge.firstChild; | |
1612 | cm.display.lineSpace.insertBefore(kludge, cm.display.lineSpace.firstChild); | |
1613 | te.value = lastCopied.join("\n"); | |
1614 | var hadFocus = document.activeElement; | |
1615 | selectInput(te); | |
1616 | setTimeout(function() { | |
1617 | cm.display.lineSpace.removeChild(kludge); | |
1618 | hadFocus.focus(); | |
1619 | }, 50); | |
1620 | } | |
1621 | } | |
1622 | on(div, "copy", onCopyCut); | |
1623 | on(div, "cut", onCopyCut); | |
1624 | }, | |
1625 | ||
1626 | prepareSelection: function() { | |
1627 | var result = prepareSelection(this.cm, false); | |
1628 | result.focus = this.cm.state.focused; | |
1629 | return result; | |
1630 | }, | |
1631 | ||
1632 | showSelection: function(info) { | |
1633 | if (!info || !this.cm.display.view.length) return; | |
1634 | if (info.focus) this.showPrimarySelection(); | |
1635 | this.showMultipleSelections(info); | |
1636 | }, | |
1637 | ||
1638 | showPrimarySelection: function() { | |
1639 | var sel = window.getSelection(), prim = this.cm.doc.sel.primary(); | |
1640 | var curAnchor = domToPos(this.cm, sel.anchorNode, sel.anchorOffset); | |
1641 | var curFocus = domToPos(this.cm, sel.focusNode, sel.focusOffset); | |
1642 | if (curAnchor && !curAnchor.bad && curFocus && !curFocus.bad && | |
1643 | cmp(minPos(curAnchor, curFocus), prim.from()) == 0 && | |
1644 | cmp(maxPos(curAnchor, curFocus), prim.to()) == 0) | |
1645 | return; | |
1646 | ||
1647 | var start = posToDOM(this.cm, prim.from()); | |
1648 | var end = posToDOM(this.cm, prim.to()); | |
1649 | if (!start && !end) return; | |
1650 | ||
1651 | var view = this.cm.display.view; | |
1652 | var old = sel.rangeCount && sel.getRangeAt(0); | |
1653 | if (!start) { | |
1654 | start = {node: view[0].measure.map[2], offset: 0}; | |
1655 | } else if (!end) { // FIXME dangerously hacky | |
1656 | var measure = view[view.length - 1].measure; | |
1657 | var map = measure.maps ? measure.maps[measure.maps.length - 1] : measure.map; | |
1658 | end = {node: map[map.length - 1], offset: map[map.length - 2] - map[map.length - 3]}; | |
1659 | } | |
1660 | ||
1661 | try { var rng = range(start.node, start.offset, end.offset, end.node); } | |
1662 | catch(e) {} // Our model of the DOM might be outdated, in which case the range we try to set can be impossible | |
1663 | if (rng) { | |
1664 | sel.removeAllRanges(); | |
1665 | sel.addRange(rng); | |
1666 | if (old && sel.anchorNode == null) sel.addRange(old); | |
1667 | else if (gecko) this.startGracePeriod(); | |
1668 | } | |
1669 | this.rememberSelection(); | |
1670 | }, | |
1671 | ||
1672 | startGracePeriod: function() { | |
1673 | var input = this; | |
1674 | clearTimeout(this.gracePeriod); | |
1675 | this.gracePeriod = setTimeout(function() { | |
1676 | input.gracePeriod = false; | |
1677 | if (input.selectionChanged()) | |
1678 | input.cm.operation(function() { input.cm.curOp.selectionChanged = true; }); | |
1679 | }, 20); | |
1680 | }, | |
1681 | ||
1682 | showMultipleSelections: function(info) { | |
1683 | removeChildrenAndAdd(this.cm.display.cursorDiv, info.cursors); | |
1684 | removeChildrenAndAdd(this.cm.display.selectionDiv, info.selection); | |
1685 | }, | |
1686 | ||
1687 | rememberSelection: function() { | |
1688 | var sel = window.getSelection(); | |
1689 | this.lastAnchorNode = sel.anchorNode; this.lastAnchorOffset = sel.anchorOffset; | |
1690 | this.lastFocusNode = sel.focusNode; this.lastFocusOffset = sel.focusOffset; | |
1691 | }, | |
1692 | ||
1693 | selectionInEditor: function() { | |
1694 | var sel = window.getSelection(); | |
1695 | if (!sel.rangeCount) return false; | |
1696 | var node = sel.getRangeAt(0).commonAncestorContainer; | |
1697 | return contains(this.div, node); | |
1698 | }, | |
1699 | ||
1700 | focus: function() { | |
1701 | if (this.cm.options.readOnly != "nocursor") this.div.focus(); | |
1702 | }, | |
1703 | blur: function() { this.div.blur(); }, | |
1704 | getField: function() { return this.div; }, | |
1705 | ||
1706 | supportsTouch: function() { return true; }, | |
1707 | ||
1708 | receivedFocus: function() { | |
1709 | var input = this; | |
1710 | if (this.selectionInEditor()) | |
1711 | this.pollSelection(); | |
1712 | else | |
1713 | runInOp(this.cm, function() { input.cm.curOp.selectionChanged = true; }); | |
1714 | ||
1715 | function poll() { | |
1716 | if (input.cm.state.focused) { | |
1717 | input.pollSelection(); | |
1718 | input.polling.set(input.cm.options.pollInterval, poll); | |
1719 | } | |
1720 | } | |
1721 | this.polling.set(this.cm.options.pollInterval, poll); | |
1722 | }, | |
1723 | ||
1724 | selectionChanged: function() { | |
1725 | var sel = window.getSelection(); | |
1726 | return sel.anchorNode != this.lastAnchorNode || sel.anchorOffset != this.lastAnchorOffset || | |
1727 | sel.focusNode != this.lastFocusNode || sel.focusOffset != this.lastFocusOffset; | |
1728 | }, | |
1729 | ||
1730 | pollSelection: function() { | |
1731 | if (!this.composing && !this.gracePeriod && this.selectionChanged()) { | |
1732 | var sel = window.getSelection(), cm = this.cm; | |
1733 | this.rememberSelection(); | |
1734 | var anchor = domToPos(cm, sel.anchorNode, sel.anchorOffset); | |
1735 | var head = domToPos(cm, sel.focusNode, sel.focusOffset); | |
1736 | if (anchor && head) runInOp(cm, function() { | |
1737 | setSelection(cm.doc, simpleSelection(anchor, head), sel_dontScroll); | |
1738 | if (anchor.bad || head.bad) cm.curOp.selectionChanged = true; | |
1739 | }); | |
1740 | } | |
1741 | }, | |
1742 | ||
1743 | pollContent: function() { | |
1744 | var cm = this.cm, display = cm.display, sel = cm.doc.sel.primary(); | |
1745 | var from = sel.from(), to = sel.to(); | |
1746 | if (from.line < display.viewFrom || to.line > display.viewTo - 1) return false; | |
1747 | ||
1748 | var fromIndex; | |
1749 | if (from.line == display.viewFrom || (fromIndex = findViewIndex(cm, from.line)) == 0) { | |
1750 | var fromLine = lineNo(display.view[0].line); | |
1751 | var fromNode = display.view[0].node; | |
1752 | } else { | |
1753 | var fromLine = lineNo(display.view[fromIndex].line); | |
1754 | var fromNode = display.view[fromIndex - 1].node.nextSibling; | |
1755 | } | |
1756 | var toIndex = findViewIndex(cm, to.line); | |
1757 | if (toIndex == display.view.length - 1) { | |
1758 | var toLine = display.viewTo - 1; | |
1759 | var toNode = display.view[toIndex].node; | |
1760 | } else { | |
1761 | var toLine = lineNo(display.view[toIndex + 1].line) - 1; | |
1762 | var toNode = display.view[toIndex + 1].node.previousSibling; | |
1763 | } | |
1764 | ||
1765 | var newText = splitLines(domTextBetween(cm, fromNode, toNode, fromLine, toLine)); | |
1766 | var oldText = getBetween(cm.doc, Pos(fromLine, 0), Pos(toLine, getLine(cm.doc, toLine).text.length)); | |
1767 | while (newText.length > 1 && oldText.length > 1) { | |
1768 | if (lst(newText) == lst(oldText)) { newText.pop(); oldText.pop(); toLine--; } | |
1769 | else if (newText[0] == oldText[0]) { newText.shift(); oldText.shift(); fromLine++; } | |
1770 | else break; | |
1771 | } | |
1772 | ||
1773 | var cutFront = 0, cutEnd = 0; | |
1774 | var newTop = newText[0], oldTop = oldText[0], maxCutFront = Math.min(newTop.length, oldTop.length); | |
1775 | while (cutFront < maxCutFront && newTop.charCodeAt(cutFront) == oldTop.charCodeAt(cutFront)) | |
1776 | ++cutFront; | |
1777 | var newBot = lst(newText), oldBot = lst(oldText); | |
1778 | var maxCutEnd = Math.min(newBot.length - (newText.length == 1 ? cutFront : 0), | |
1779 | oldBot.length - (oldText.length == 1 ? cutFront : 0)); | |
1780 | while (cutEnd < maxCutEnd && | |
1781 | newBot.charCodeAt(newBot.length - cutEnd - 1) == oldBot.charCodeAt(oldBot.length - cutEnd - 1)) | |
1782 | ++cutEnd; | |
1783 | ||
1784 | newText[newText.length - 1] = newBot.slice(0, newBot.length - cutEnd); | |
1785 | newText[0] = newText[0].slice(cutFront); | |
1786 | ||
1787 | var chFrom = Pos(fromLine, cutFront); | |
1788 | var chTo = Pos(toLine, oldText.length ? lst(oldText).length - cutEnd : 0); | |
1789 | if (newText.length > 1 || newText[0] || cmp(chFrom, chTo)) { | |
1790 | replaceRange(cm.doc, newText, chFrom, chTo, "+input"); | |
1791 | return true; | |
1792 | } | |
1793 | }, | |
1794 | ||
1795 | ensurePolled: function() { | |
1796 | this.forceCompositionEnd(); | |
1797 | }, | |
1798 | reset: function() { | |
1799 | this.forceCompositionEnd(); | |
1800 | }, | |
1801 | forceCompositionEnd: function() { | |
1802 | if (!this.composing || this.composing.handled) return; | |
1803 | this.applyComposition(this.composing); | |
1804 | this.composing.handled = true; | |
1805 | this.div.blur(); | |
1806 | this.div.focus(); | |
1807 | }, | |
1808 | applyComposition: function(composing) { | |
1809 | if (composing.data && composing.data != composing.startData) | |
1810 | operation(this.cm, applyTextInput)(this.cm, composing.data, 0, composing.sel); | |
1811 | }, | |
1812 | ||
1813 | setUneditable: function(node) { | |
1814 | node.setAttribute("contenteditable", "false"); | |
1815 | }, | |
1816 | ||
1817 | onKeyPress: function(e) { | |
1818 | e.preventDefault(); | |
1819 | operation(this.cm, applyTextInput)(this.cm, String.fromCharCode(e.charCode == null ? e.keyCode : e.charCode), 0); | |
1820 | }, | |
1821 | ||
1822 | onContextMenu: nothing, | |
1823 | resetPosition: nothing, | |
1824 | ||
1825 | needsContentAttribute: true | |
1826 | }, ContentEditableInput.prototype); | |
1827 | ||
1828 | function posToDOM(cm, pos) { | |
1829 | var view = findViewForLine(cm, pos.line); | |
1830 | if (!view || view.hidden) return null; | |
1831 | var line = getLine(cm.doc, pos.line); | |
1832 | var info = mapFromLineView(view, line, pos.line); | |
1833 | ||
1834 | var order = getOrder(line), side = "left"; | |
1835 | if (order) { | |
1836 | var partPos = getBidiPartAt(order, pos.ch); | |
1837 | side = partPos % 2 ? "right" : "left"; | |
1838 | } | |
1839 | var result = nodeAndOffsetInLineMap(info.map, pos.ch, "left"); | |
1840 | result.offset = result.collapse == "right" ? result.end : result.start; | |
1841 | return result; | |
1842 | } | |
1843 | ||
1844 | function badPos(pos, bad) { if (bad) pos.bad = true; return pos; } | |
1845 | ||
1846 | function domToPos(cm, node, offset) { | |
1847 | var lineNode; | |
1848 | if (node == cm.display.lineDiv) { | |
1849 | lineNode = cm.display.lineDiv.childNodes[offset]; | |
1850 | if (!lineNode) return badPos(cm.clipPos(Pos(cm.display.viewTo - 1)), true); | |
1851 | node = null; offset = 0; | |
1852 | } else { | |
1853 | for (lineNode = node;; lineNode = lineNode.parentNode) { | |
1854 | if (!lineNode || lineNode == cm.display.lineDiv) return null; | |
1855 | if (lineNode.parentNode && lineNode.parentNode == cm.display.lineDiv) break; | |
1856 | } | |
1857 | } | |
1858 | for (var i = 0; i < cm.display.view.length; i++) { | |
1859 | var lineView = cm.display.view[i]; | |
1860 | if (lineView.node == lineNode) | |
1861 | return locateNodeInLineView(lineView, node, offset); | |
1862 | } | |
1863 | } | |
1864 | ||
1865 | function locateNodeInLineView(lineView, node, offset) { | |
1866 | var wrapper = lineView.text.firstChild, bad = false; | |
1867 | if (!node || !contains(wrapper, node)) return badPos(Pos(lineNo(lineView.line), 0), true); | |
1868 | if (node == wrapper) { | |
1869 | bad = true; | |
1870 | node = wrapper.childNodes[offset]; | |
1871 | offset = 0; | |
1872 | if (!node) { | |
1873 | var line = lineView.rest ? lst(lineView.rest) : lineView.line; | |
1874 | return badPos(Pos(lineNo(line), line.text.length), bad); | |
1875 | } | |
1876 | } | |
1877 | ||
1878 | var textNode = node.nodeType == 3 ? node : null, topNode = node; | |
1879 | if (!textNode && node.childNodes.length == 1 && node.firstChild.nodeType == 3) { | |
1880 | textNode = node.firstChild; | |
1881 | if (offset) offset = textNode.nodeValue.length; | |
1882 | } | |
1883 | while (topNode.parentNode != wrapper) topNode = topNode.parentNode; | |
1884 | var measure = lineView.measure, maps = measure.maps; | |
1885 | ||
1886 | function find(textNode, topNode, offset) { | |
1887 | for (var i = -1; i < (maps ? maps.length : 0); i++) { | |
1888 | var map = i < 0 ? measure.map : maps[i]; | |
1889 | for (var j = 0; j < map.length; j += 3) { | |
1890 | var curNode = map[j + 2]; | |
1891 | if (curNode == textNode || curNode == topNode) { | |
1892 | var line = lineNo(i < 0 ? lineView.line : lineView.rest[i]); | |
1893 | var ch = map[j] + offset; | |
1894 | if (offset < 0 || curNode != textNode) ch = map[j + (offset ? 1 : 0)]; | |
1895 | return Pos(line, ch); | |
1896 | } | |
1897 | } | |
1898 | } | |
1899 | } | |
1900 | var found = find(textNode, topNode, offset); | |
1901 | if (found) return badPos(found, bad); | |
1902 | ||
1903 | // FIXME this is all really shaky. might handle the few cases it needs to handle, but likely to cause problems | |
1904 | for (var after = topNode.nextSibling, dist = textNode ? textNode.nodeValue.length - offset : 0; after; after = after.nextSibling) { | |
1905 | found = find(after, after.firstChild, 0); | |
1906 | if (found) | |
1907 | return badPos(Pos(found.line, found.ch - dist), bad); | |
1908 | else | |
1909 | dist += after.textContent.length; | |
1910 | } | |
1911 | for (var before = topNode.previousSibling, dist = offset; before; before = before.previousSibling) { | |
1912 | found = find(before, before.firstChild, -1); | |
1913 | if (found) | |
1914 | return badPos(Pos(found.line, found.ch + dist), bad); | |
1915 | else | |
1916 | dist += after.textContent.length; | |
1917 | } | |
1918 | } | |
1919 | ||
1920 | function domTextBetween(cm, from, to, fromLine, toLine) { | |
1921 | var text = "", closing = false; | |
1922 | function recognizeMarker(id) { return function(marker) { return marker.id == id; }; } | |
1923 | function walk(node) { | |
1924 | if (node.nodeType == 1) { | |
1925 | var cmText = node.getAttribute("cm-text"); | |
1926 | if (cmText != null) { | |
1927 | if (cmText == "") cmText = node.textContent.replace(/\u200b/g, ""); | |
1928 | text += cmText; | |
1929 | return; | |
1930 | } | |
1931 | var markerID = node.getAttribute("cm-marker"), range; | |
1932 | if (markerID) { | |
1933 | var found = cm.findMarks(Pos(fromLine, 0), Pos(toLine + 1, 0), recognizeMarker(+markerID)); | |
1934 | if (found.length && (range = found[0].find())) | |
1935 | text += getBetween(cm.doc, range.from, range.to).join("\n"); | |
1936 | return; | |
1937 | } | |
1938 | if (node.getAttribute("contenteditable") == "false") return; | |
1939 | for (var i = 0; i < node.childNodes.length; i++) | |
1940 | walk(node.childNodes[i]); | |
1941 | if (/^(pre|div|p)$/i.test(node.nodeName)) | |
1942 | closing = true; | |
1943 | } else if (node.nodeType == 3) { | |
1944 | var val = node.nodeValue; | |
1945 | if (!val) return; | |
1946 | if (closing) { | |
1947 | text += "\n"; | |
1948 | closing = false; | |
1949 | } | |
1950 | text += val; | |
1951 | } | |
1952 | } | |
1953 | for (;;) { | |
1954 | walk(from); | |
1955 | if (from == to) break; | |
1956 | from = from.nextSibling; | |
1957 | } | |
1958 | return text; | |
1959 | } | |
1960 | ||
1961 | CodeMirror.inputStyles = {"textarea": TextareaInput, "contenteditable": ContentEditableInput}; | |
1962 | ||
1963 | // SELECTION / CURSOR | |
1964 | ||
1965 | // Selection objects are immutable. A new one is created every time | |
1966 | // the selection changes. A selection is one or more non-overlapping | |
1967 | // (and non-touching) ranges, sorted, and an integer that indicates | |
1968 | // which one is the primary selection (the one that's scrolled into | |
1969 | // view, that getCursor returns, etc). | |
1970 | function Selection(ranges, primIndex) { | |
1971 | this.ranges = ranges; | |
1972 | this.primIndex = primIndex; | |
1973 | } | |
1974 | ||
1975 | Selection.prototype = { | |
1976 | primary: function() { return this.ranges[this.primIndex]; }, | |
1977 | equals: function(other) { | |
1978 | if (other == this) return true; | |
1979 | if (other.primIndex != this.primIndex || other.ranges.length != this.ranges.length) return false; | |
1980 | for (var i = 0; i < this.ranges.length; i++) { | |
1981 | var here = this.ranges[i], there = other.ranges[i]; | |
1982 | if (cmp(here.anchor, there.anchor) != 0 || cmp(here.head, there.head) != 0) return false; | |
1983 | } | |
1984 | return true; | |
1985 | }, | |
1986 | deepCopy: function() { | |
1987 | for (var out = [], i = 0; i < this.ranges.length; i++) | |
1988 | out[i] = new Range(copyPos(this.ranges[i].anchor), copyPos(this.ranges[i].head)); | |
1989 | return new Selection(out, this.primIndex); | |
1990 | }, | |
1991 | somethingSelected: function() { | |
1992 | for (var i = 0; i < this.ranges.length; i++) | |
1993 | if (!this.ranges[i].empty()) return true; | |
1994 | return false; | |
1995 | }, | |
1996 | contains: function(pos, end) { | |
1997 | if (!end) end = pos; | |
1998 | for (var i = 0; i < this.ranges.length; i++) { | |
1999 | var range = this.ranges[i]; | |
2000 | if (cmp(end, range.from()) >= 0 && cmp(pos, range.to()) <= 0) | |
2001 | return i; | |
2002 | } | |
2003 | return -1; | |
2004 | } | |
2005 | }; | |
2006 | ||
2007 | function Range(anchor, head) { | |
2008 | this.anchor = anchor; this.head = head; | |
2009 | } | |
2010 | ||
2011 | Range.prototype = { | |
2012 | from: function() { return minPos(this.anchor, this.head); }, | |
2013 | to: function() { return maxPos(this.anchor, this.head); }, | |
2014 | empty: function() { | |
2015 | return this.head.line == this.anchor.line && this.head.ch == this.anchor.ch; | |
2016 | } | |
2017 | }; | |
2018 | ||
2019 | // Take an unsorted, potentially overlapping set of ranges, and | |
2020 | // build a selection out of it. 'Consumes' ranges array (modifying | |
2021 | // it). | |
2022 | function normalizeSelection(ranges, primIndex) { | |
2023 | var prim = ranges[primIndex]; | |
2024 | ranges.sort(function(a, b) { return cmp(a.from(), b.from()); }); | |
2025 | primIndex = indexOf(ranges, prim); | |
2026 | for (var i = 1; i < ranges.length; i++) { | |
2027 | var cur = ranges[i], prev = ranges[i - 1]; | |
2028 | if (cmp(prev.to(), cur.from()) >= 0) { | |
2029 | var from = minPos(prev.from(), cur.from()), to = maxPos(prev.to(), cur.to()); | |
2030 | var inv = prev.empty() ? cur.from() == cur.head : prev.from() == prev.head; | |
2031 | if (i <= primIndex) --primIndex; | |
2032 | ranges.splice(--i, 2, new Range(inv ? to : from, inv ? from : to)); | |
2033 | } | |
2034 | } | |
2035 | return new Selection(ranges, primIndex); | |
2036 | } | |
2037 | ||
2038 | function simpleSelection(anchor, head) { | |
2039 | return new Selection([new Range(anchor, head || anchor)], 0); | |
2040 | } | |
2041 | ||
2042 | // Most of the external API clips given positions to make sure they | |
2043 | // actually exist within the document. | |
2044 | function clipLine(doc, n) {return Math.max(doc.first, Math.min(n, doc.first + doc.size - 1));} | |
2045 | function clipPos(doc, pos) { | |
2046 | if (pos.line < doc.first) return Pos(doc.first, 0); | |
2047 | var last = doc.first + doc.size - 1; | |
2048 | if (pos.line > last) return Pos(last, getLine(doc, last).text.length); | |
2049 | return clipToLen(pos, getLine(doc, pos.line).text.length); | |
2050 | } | |
2051 | function clipToLen(pos, linelen) { | |
2052 | var ch = pos.ch; | |
2053 | if (ch == null || ch > linelen) return Pos(pos.line, linelen); | |
2054 | else if (ch < 0) return Pos(pos.line, 0); | |
2055 | else return pos; | |
2056 | } | |
2057 | function isLine(doc, l) {return l >= doc.first && l < doc.first + doc.size;} | |
2058 | function clipPosArray(doc, array) { | |
2059 | for (var out = [], i = 0; i < array.length; i++) out[i] = clipPos(doc, array[i]); | |
2060 | return out; | |
2061 | } | |
2062 | ||
2063 | // SELECTION UPDATES | |
2064 | ||
2065 | // The 'scroll' parameter given to many of these indicated whether | |
2066 | // the new cursor position should be scrolled into view after | |
2067 | // modifying the selection. | |
2068 | ||
2069 | // If shift is held or the extend flag is set, extends a range to | |
2070 | // include a given position (and optionally a second position). | |
2071 | // Otherwise, simply returns the range between the given positions. | |
2072 | // Used for cursor motion and such. | |
2073 | function extendRange(doc, range, head, other) { | |
2074 | if (doc.cm && doc.cm.display.shift || doc.extend) { | |
2075 | var anchor = range.anchor; | |
2076 | if (other) { | |
2077 | var posBefore = cmp(head, anchor) < 0; | |
2078 | if (posBefore != (cmp(other, anchor) < 0)) { | |
2079 | anchor = head; | |
2080 | head = other; | |
2081 | } else if (posBefore != (cmp(head, other) < 0)) { | |
2082 | head = other; | |
2083 | } | |
2084 | } | |
2085 | return new Range(anchor, head); | |
2086 | } else { | |
2087 | return new Range(other || head, head); | |
2088 | } | |
2089 | } | |
2090 | ||
2091 | // Extend the primary selection range, discard the rest. | |
2092 | function extendSelection(doc, head, other, options) { | |
2093 | setSelection(doc, new Selection([extendRange(doc, doc.sel.primary(), head, other)], 0), options); | |
2094 | } | |
2095 | ||
2096 | // Extend all selections (pos is an array of selections with length | |
2097 | // equal the number of selections) | |
2098 | function extendSelections(doc, heads, options) { | |
2099 | for (var out = [], i = 0; i < doc.sel.ranges.length; i++) | |
2100 | out[i] = extendRange(doc, doc.sel.ranges[i], heads[i], null); | |
2101 | var newSel = normalizeSelection(out, doc.sel.primIndex); | |
2102 | setSelection(doc, newSel, options); | |
2103 | } | |
2104 | ||
2105 | // Updates a single range in the selection. | |
2106 | function replaceOneSelection(doc, i, range, options) { | |
2107 | var ranges = doc.sel.ranges.slice(0); | |
2108 | ranges[i] = range; | |
2109 | setSelection(doc, normalizeSelection(ranges, doc.sel.primIndex), options); | |
2110 | } | |
2111 | ||
2112 | // Reset the selection to a single range. | |
2113 | function setSimpleSelection(doc, anchor, head, options) { | |
2114 | setSelection(doc, simpleSelection(anchor, head), options); | |
2115 | } | |
2116 | ||
2117 | // Give beforeSelectionChange handlers a change to influence a | |
2118 | // selection update. | |
2119 | function filterSelectionChange(doc, sel) { | |
2120 | var obj = { | |
2121 | ranges: sel.ranges, | |
2122 | update: function(ranges) { | |
2123 | this.ranges = []; | |
2124 | for (var i = 0; i < ranges.length; i++) | |
2125 | this.ranges[i] = new Range(clipPos(doc, ranges[i].anchor), | |
2126 | clipPos(doc, ranges[i].head)); | |
2127 | } | |
2128 | }; | |
2129 | signal(doc, "beforeSelectionChange", doc, obj); | |
2130 | if (doc.cm) signal(doc.cm, "beforeSelectionChange", doc.cm, obj); | |
2131 | if (obj.ranges != sel.ranges) return normalizeSelection(obj.ranges, obj.ranges.length - 1); | |
2132 | else return sel; | |
2133 | } | |
2134 | ||
2135 | function setSelectionReplaceHistory(doc, sel, options) { | |
2136 | var done = doc.history.done, last = lst(done); | |
2137 | if (last && last.ranges) { | |
2138 | done[done.length - 1] = sel; | |
2139 | setSelectionNoUndo(doc, sel, options); | |
2140 | } else { | |
2141 | setSelection(doc, sel, options); | |
2142 | } | |
2143 | } | |
2144 | ||
2145 | // Set a new selection. | |
2146 | function setSelection(doc, sel, options) { | |
2147 | setSelectionNoUndo(doc, sel, options); | |
2148 | addSelectionToHistory(doc, doc.sel, doc.cm ? doc.cm.curOp.id : NaN, options); | |
2149 | } | |
2150 | ||
2151 | function setSelectionNoUndo(doc, sel, options) { | |
2152 | if (hasHandler(doc, "beforeSelectionChange") || doc.cm && hasHandler(doc.cm, "beforeSelectionChange")) | |
2153 | sel = filterSelectionChange(doc, sel); | |
2154 | ||
2155 | var bias = options && options.bias || | |
2156 | (cmp(sel.primary().head, doc.sel.primary().head) < 0 ? -1 : 1); | |
2157 | setSelectionInner(doc, skipAtomicInSelection(doc, sel, bias, true)); | |
2158 | ||
2159 | if (!(options && options.scroll === false) && doc.cm) | |
2160 | ensureCursorVisible(doc.cm); | |
2161 | } | |
2162 | ||
2163 | function setSelectionInner(doc, sel) { | |
2164 | if (sel.equals(doc.sel)) return; | |
2165 | ||
2166 | doc.sel = sel; | |
2167 | ||
2168 | if (doc.cm) { | |
2169 | doc.cm.curOp.updateInput = doc.cm.curOp.selectionChanged = true; | |
2170 | signalCursorActivity(doc.cm); | |
2171 | } | |
2172 | signalLater(doc, "cursorActivity", doc); | |
2173 | } | |
2174 | ||
2175 | // Verify that the selection does not partially select any atomic | |
2176 | // marked ranges. | |
2177 | function reCheckSelection(doc) { | |
2178 | setSelectionInner(doc, skipAtomicInSelection(doc, doc.sel, null, false), sel_dontScroll); | |
2179 | } | |
2180 | ||
2181 | // Return a selection that does not partially select any atomic | |
2182 | // ranges. | |
2183 | function skipAtomicInSelection(doc, sel, bias, mayClear) { | |
2184 | var out; | |
2185 | for (var i = 0; i < sel.ranges.length; i++) { | |
2186 | var range = sel.ranges[i]; | |
2187 | var newAnchor = skipAtomic(doc, range.anchor, bias, mayClear); | |
2188 | var newHead = skipAtomic(doc, range.head, bias, mayClear); | |
2189 | if (out || newAnchor != range.anchor || newHead != range.head) { | |
2190 | if (!out) out = sel.ranges.slice(0, i); | |
2191 | out[i] = new Range(newAnchor, newHead); | |
2192 | } | |
2193 | } | |
2194 | return out ? normalizeSelection(out, sel.primIndex) : sel; | |
2195 | } | |
2196 | ||
2197 | // Ensure a given position is not inside an atomic range. | |
2198 | function skipAtomic(doc, pos, bias, mayClear) { | |
2199 | var flipped = false, curPos = pos; | |
2200 | var dir = bias || 1; | |
2201 | doc.cantEdit = false; | |
2202 | search: for (;;) { | |
2203 | var line = getLine(doc, curPos.line); | |
2204 | if (line.markedSpans) { | |
2205 | for (var i = 0; i < line.markedSpans.length; ++i) { | |
2206 | var sp = line.markedSpans[i], m = sp.marker; | |
2207 | if ((sp.from == null || (m.inclusiveLeft ? sp.from <= curPos.ch : sp.from < curPos.ch)) && | |
2208 | (sp.to == null || (m.inclusiveRight ? sp.to >= curPos.ch : sp.to > curPos.ch))) { | |
2209 | if (mayClear) { | |
2210 | signal(m, "beforeCursorEnter"); | |
2211 | if (m.explicitlyCleared) { | |
2212 | if (!line.markedSpans) break; | |
2213 | else {--i; continue;} | |
2214 | } | |
2215 | } | |
2216 | if (!m.atomic) continue; | |
2217 | var newPos = m.find(dir < 0 ? -1 : 1); | |
2218 | if (cmp(newPos, curPos) == 0) { | |
2219 | newPos.ch += dir; | |
2220 | if (newPos.ch < 0) { | |
2221 | if (newPos.line > doc.first) newPos = clipPos(doc, Pos(newPos.line - 1)); | |
2222 | else newPos = null; | |
2223 | } else if (newPos.ch > line.text.length) { | |
2224 | if (newPos.line < doc.first + doc.size - 1) newPos = Pos(newPos.line + 1, 0); | |
2225 | else newPos = null; | |
2226 | } | |
2227 | if (!newPos) { | |
2228 | if (flipped) { | |
2229 | // Driven in a corner -- no valid cursor position found at all | |
2230 | // -- try again *with* clearing, if we didn't already | |
2231 | if (!mayClear) return skipAtomic(doc, pos, bias, true); | |
2232 | // Otherwise, turn off editing until further notice, and return the start of the doc | |
2233 | doc.cantEdit = true; | |
2234 | return Pos(doc.first, 0); | |
2235 | } | |
2236 | flipped = true; newPos = pos; dir = -dir; | |
2237 | } | |
2238 | } | |
2239 | curPos = newPos; | |
2240 | continue search; | |
2241 | } | |
2242 | } | |
2243 | } | |
2244 | return curPos; | |
2245 | } | |
2246 | } | |
2247 | ||
2248 | // SELECTION DRAWING | |
2249 | ||
2250 | function updateSelection(cm) { | |
2251 | cm.display.input.showSelection(cm.display.input.prepareSelection()); | |
2252 | } | |
2253 | ||
2254 | function prepareSelection(cm, primary) { | |
2255 | var doc = cm.doc, result = {}; | |
2256 | var curFragment = result.cursors = document.createDocumentFragment(); | |
2257 | var selFragment = result.selection = document.createDocumentFragment(); | |
2258 | ||
2259 | for (var i = 0; i < doc.sel.ranges.length; i++) { | |
2260 | if (primary === false && i == doc.sel.primIndex) continue; | |
2261 | var range = doc.sel.ranges[i]; | |
2262 | var collapsed = range.empty(); | |
2263 | if (collapsed || cm.options.showCursorWhenSelecting) | |
2264 | drawSelectionCursor(cm, range, curFragment); | |
2265 | if (!collapsed) | |
2266 | drawSelectionRange(cm, range, selFragment); | |
2267 | } | |
2268 | return result; | |
2269 | } | |
2270 | ||
2271 | // Draws a cursor for the given range | |
2272 | function drawSelectionCursor(cm, range, output) { | |
2273 | var pos = cursorCoords(cm, range.head, "div", null, null, !cm.options.singleCursorHeightPerLine); | |
2274 | ||
2275 | var cursor = output.appendChild(elt("div", "\u00a0", "CodeMirror-cursor")); | |
2276 | cursor.style.left = pos.left + "px"; | |
2277 | cursor.style.top = pos.top + "px"; | |
2278 | cursor.style.height = Math.max(0, pos.bottom - pos.top) * cm.options.cursorHeight + "px"; | |
2279 | ||
2280 | if (pos.other) { | |
2281 | // Secondary cursor, shown when on a 'jump' in bi-directional text | |
2282 | var otherCursor = output.appendChild(elt("div", "\u00a0", "CodeMirror-cursor CodeMirror-secondarycursor")); | |
2283 | otherCursor.style.display = ""; | |
2284 | otherCursor.style.left = pos.other.left + "px"; | |
2285 | otherCursor.style.top = pos.other.top + "px"; | |
2286 | otherCursor.style.height = (pos.other.bottom - pos.other.top) * .85 + "px"; | |
2287 | } | |
2288 | } | |
2289 | ||
2290 | // Draws the given range as a highlighted selection | |
2291 | function drawSelectionRange(cm, range, output) { | |
2292 | var display = cm.display, doc = cm.doc; | |
2293 | var fragment = document.createDocumentFragment(); | |
2294 | var padding = paddingH(cm.display), leftSide = padding.left; | |
2295 | var rightSide = Math.max(display.sizerWidth, displayWidth(cm) - display.sizer.offsetLeft) - padding.right; | |
2296 | ||
2297 | function add(left, top, width, bottom) { | |
2298 | if (top < 0) top = 0; | |
2299 | top = Math.round(top); | |
2300 | bottom = Math.round(bottom); | |
2301 | fragment.appendChild(elt("div", null, "CodeMirror-selected", "position: absolute; left: " + left + | |
2302 | "px; top: " + top + "px; width: " + (width == null ? rightSide - left : width) + | |
2303 | "px; height: " + (bottom - top) + "px")); | |
2304 | } | |
2305 | ||
2306 | function drawForLine(line, fromArg, toArg) { | |
2307 | var lineObj = getLine(doc, line); | |
2308 | var lineLen = lineObj.text.length; | |
2309 | var start, end; | |
2310 | function coords(ch, bias) { | |
2311 | return charCoords(cm, Pos(line, ch), "div", lineObj, bias); | |
2312 | } | |
2313 | ||
2314 | iterateBidiSections(getOrder(lineObj), fromArg || 0, toArg == null ? lineLen : toArg, function(from, to, dir) { | |
2315 | var leftPos = coords(from, "left"), rightPos, left, right; | |
2316 | if (from == to) { | |
2317 | rightPos = leftPos; | |
2318 | left = right = leftPos.left; | |
2319 | } else { | |
2320 | rightPos = coords(to - 1, "right"); | |
2321 | if (dir == "rtl") { var tmp = leftPos; leftPos = rightPos; rightPos = tmp; } | |
2322 | left = leftPos.left; | |
2323 | right = rightPos.right; | |
2324 | } | |
2325 | if (fromArg == null && from == 0) left = leftSide; | |
2326 | if (rightPos.top - leftPos.top > 3) { // Different lines, draw top part | |
2327 | add(left, leftPos.top, null, leftPos.bottom); | |
2328 | left = leftSide; | |
2329 | if (leftPos.bottom < rightPos.top) add(left, leftPos.bottom, null, rightPos.top); | |
2330 | } | |
2331 | if (toArg == null && to == lineLen) right = rightSide; | |
2332 | if (!start || leftPos.top < start.top || leftPos.top == start.top && leftPos.left < start.left) | |
2333 | start = leftPos; | |
2334 | if (!end || rightPos.bottom > end.bottom || rightPos.bottom == end.bottom && rightPos.right > end.right) | |
2335 | end = rightPos; | |
2336 | if (left < leftSide + 1) left = leftSide; | |
2337 | add(left, rightPos.top, right - left, rightPos.bottom); | |
2338 | }); | |
2339 | return {start: start, end: end}; | |
2340 | } | |
2341 | ||
2342 | var sFrom = range.from(), sTo = range.to(); | |
2343 | if (sFrom.line == sTo.line) { | |
2344 | drawForLine(sFrom.line, sFrom.ch, sTo.ch); | |
2345 | } else { | |
2346 | var fromLine = getLine(doc, sFrom.line), toLine = getLine(doc, sTo.line); | |
2347 | var singleVLine = visualLine(fromLine) == visualLine(toLine); | |
2348 | var leftEnd = drawForLine(sFrom.line, sFrom.ch, singleVLine ? fromLine.text.length + 1 : null).end; | |
2349 | var rightStart = drawForLine(sTo.line, singleVLine ? 0 : null, sTo.ch).start; | |
2350 | if (singleVLine) { | |
2351 | if (leftEnd.top < rightStart.top - 2) { | |
2352 | add(leftEnd.right, leftEnd.top, null, leftEnd.bottom); | |
2353 | add(leftSide, rightStart.top, rightStart.left, rightStart.bottom); | |
2354 | } else { | |
2355 | add(leftEnd.right, leftEnd.top, rightStart.left - leftEnd.right, leftEnd.bottom); | |
2356 | } | |
2357 | } | |
2358 | if (leftEnd.bottom < rightStart.top) | |
2359 | add(leftSide, leftEnd.bottom, null, rightStart.top); | |
2360 | } | |
2361 | ||
2362 | output.appendChild(fragment); | |
2363 | } | |
2364 | ||
2365 | // Cursor-blinking | |
2366 | function restartBlink(cm) { | |
2367 | if (!cm.state.focused) return; | |
2368 | var display = cm.display; | |
2369 | clearInterval(display.blinker); | |
2370 | var on = true; | |
2371 | display.cursorDiv.style.visibility = ""; | |
2372 | if (cm.options.cursorBlinkRate > 0) | |
2373 | display.blinker = setInterval(function() { | |
2374 | display.cursorDiv.style.visibility = (on = !on) ? "" : "hidden"; | |
2375 | }, cm.options.cursorBlinkRate); | |
2376 | else if (cm.options.cursorBlinkRate < 0) | |
2377 | display.cursorDiv.style.visibility = "hidden"; | |
2378 | } | |
2379 | ||
2380 | // HIGHLIGHT WORKER | |
2381 | ||
2382 | function startWorker(cm, time) { | |
2383 | if (cm.doc.mode.startState && cm.doc.frontier < cm.display.viewTo) | |
2384 | cm.state.highlight.set(time, bind(highlightWorker, cm)); | |
2385 | } | |
2386 | ||
2387 | function highlightWorker(cm) { | |
2388 | var doc = cm.doc; | |
2389 | if (doc.frontier < doc.first) doc.frontier = doc.first; | |
2390 | if (doc.frontier >= cm.display.viewTo) return; | |
2391 | var end = +new Date + cm.options.workTime; | |
2392 | var state = copyState(doc.mode, getStateBefore(cm, doc.frontier)); | |
2393 | var changedLines = []; | |
2394 | ||
2395 | doc.iter(doc.frontier, Math.min(doc.first + doc.size, cm.display.viewTo + 500), function(line) { | |
2396 | if (doc.frontier >= cm.display.viewFrom) { // Visible | |
2397 | var oldStyles = line.styles; | |
2398 | var highlighted = highlightLine(cm, line, state, true); | |
2399 | line.styles = highlighted.styles; | |
2400 | var oldCls = line.styleClasses, newCls = highlighted.classes; | |
2401 | if (newCls) line.styleClasses = newCls; | |
2402 | else if (oldCls) line.styleClasses = null; | |
2403 | var ischange = !oldStyles || oldStyles.length != line.styles.length || | |
2404 | oldCls != newCls && (!oldCls || !newCls || oldCls.bgClass != newCls.bgClass || oldCls.textClass != newCls.textClass); | |
2405 | for (var i = 0; !ischange && i < oldStyles.length; ++i) ischange = oldStyles[i] != line.styles[i]; | |
2406 | if (ischange) changedLines.push(doc.frontier); | |
2407 | line.stateAfter = copyState(doc.mode, state); | |
2408 | } else { | |
2409 | processLine(cm, line.text, state); | |
2410 | line.stateAfter = doc.frontier % 5 == 0 ? copyState(doc.mode, state) : null; | |
2411 | } | |
2412 | ++doc.frontier; | |
2413 | if (+new Date > end) { | |
2414 | startWorker(cm, cm.options.workDelay); | |
2415 | return true; | |
2416 | } | |
2417 | }); | |
2418 | if (changedLines.length) runInOp(cm, function() { | |
2419 | for (var i = 0; i < changedLines.length; i++) | |
2420 | regLineChange(cm, changedLines[i], "text"); | |
2421 | }); | |
2422 | } | |
2423 | ||
2424 | // Finds the line to start with when starting a parse. Tries to | |
2425 | // find a line with a stateAfter, so that it can start with a | |
2426 | // valid state. If that fails, it returns the line with the | |
2427 | // smallest indentation, which tends to need the least context to | |
2428 | // parse correctly. | |
2429 | function findStartLine(cm, n, precise) { | |
2430 | var minindent, minline, doc = cm.doc; | |
2431 | var lim = precise ? -1 : n - (cm.doc.mode.innerMode ? 1000 : 100); | |
2432 | for (var search = n; search > lim; --search) { | |
2433 | if (search <= doc.first) return doc.first; | |
2434 | var line = getLine(doc, search - 1); | |
2435 | if (line.stateAfter && (!precise || search <= doc.frontier)) return search; | |
2436 | var indented = countColumn(line.text, null, cm.options.tabSize); | |
2437 | if (minline == null || minindent > indented) { | |
2438 | minline = search - 1; | |
2439 | minindent = indented; | |
2440 | } | |
2441 | } | |
2442 | return minline; | |
2443 | } | |
2444 | ||
2445 | function getStateBefore(cm, n, precise) { | |
2446 | var doc = cm.doc, display = cm.display; | |
2447 | if (!doc.mode.startState) return true; | |
2448 | var pos = findStartLine(cm, n, precise), state = pos > doc.first && getLine(doc, pos-1).stateAfter; | |
2449 | if (!state) state = startState(doc.mode); | |
2450 | else state = copyState(doc.mode, state); | |
2451 | doc.iter(pos, n, function(line) { | |
2452 | processLine(cm, line.text, state); | |
2453 | var save = pos == n - 1 || pos % 5 == 0 || pos >= display.viewFrom && pos < display.viewTo; | |
2454 | line.stateAfter = save ? copyState(doc.mode, state) : null; | |
2455 | ++pos; | |
2456 | }); | |
2457 | if (precise) doc.frontier = pos; | |
2458 | return state; | |
2459 | } | |
2460 | ||
2461 | // POSITION MEASUREMENT | |
2462 | ||
2463 | function paddingTop(display) {return display.lineSpace.offsetTop;} | |
2464 | function paddingVert(display) {return display.mover.offsetHeight - display.lineSpace.offsetHeight;} | |
2465 | function paddingH(display) { | |
2466 | if (display.cachedPaddingH) return display.cachedPaddingH; | |
2467 | var e = removeChildrenAndAdd(display.measure, elt("pre", "x")); | |
2468 | var style = window.getComputedStyle ? window.getComputedStyle(e) : e.currentStyle; | |
2469 | var data = {left: parseInt(style.paddingLeft), right: parseInt(style.paddingRight)}; | |
2470 | if (!isNaN(data.left) && !isNaN(data.right)) display.cachedPaddingH = data; | |
2471 | return data; | |
2472 | } | |
2473 | ||
2474 | function scrollGap(cm) { return scrollerGap - cm.display.nativeBarWidth; } | |
2475 | function displayWidth(cm) { | |
2476 | return cm.display.scroller.clientWidth - scrollGap(cm) - cm.display.barWidth; | |
2477 | } | |
2478 | function displayHeight(cm) { | |
2479 | return cm.display.scroller.clientHeight - scrollGap(cm) - cm.display.barHeight; | |
2480 | } | |
2481 | ||
2482 | // Ensure the lineView.wrapping.heights array is populated. This is | |
2483 | // an array of bottom offsets for the lines that make up a drawn | |
2484 | // line. When lineWrapping is on, there might be more than one | |
2485 | // height. | |
2486 | function ensureLineHeights(cm, lineView, rect) { | |
2487 | var wrapping = cm.options.lineWrapping; | |
2488 | var curWidth = wrapping && displayWidth(cm); | |
2489 | if (!lineView.measure.heights || wrapping && lineView.measure.width != curWidth) { | |
2490 | var heights = lineView.measure.heights = []; | |
2491 | if (wrapping) { | |
2492 | lineView.measure.width = curWidth; | |
2493 | var rects = lineView.text.firstChild.getClientRects(); | |
2494 | for (var i = 0; i < rects.length - 1; i++) { | |
2495 | var cur = rects[i], next = rects[i + 1]; | |
2496 | if (Math.abs(cur.bottom - next.bottom) > 2) | |
2497 | heights.push((cur.bottom + next.top) / 2 - rect.top); | |
2498 | } | |
2499 | } | |
2500 | heights.push(rect.bottom - rect.top); | |
2501 | } | |
2502 | } | |
2503 | ||
2504 | // Find a line map (mapping character offsets to text nodes) and a | |
2505 | // measurement cache for the given line number. (A line view might | |
2506 | // contain multiple lines when collapsed ranges are present.) | |
2507 | function mapFromLineView(lineView, line, lineN) { | |
2508 | if (lineView.line == line) | |
2509 | return {map: lineView.measure.map, cache: lineView.measure.cache}; | |
2510 | for (var i = 0; i < lineView.rest.length; i++) | |
2511 | if (lineView.rest[i] == line) | |
2512 | return {map: lineView.measure.maps[i], cache: lineView.measure.caches[i]}; | |
2513 | for (var i = 0; i < lineView.rest.length; i++) | |
2514 | if (lineNo(lineView.rest[i]) > lineN) | |
2515 | return {map: lineView.measure.maps[i], cache: lineView.measure.caches[i], before: true}; | |
2516 | } | |
2517 | ||
2518 | // Render a line into the hidden node display.externalMeasured. Used | |
2519 | // when measurement is needed for a line that's not in the viewport. | |
2520 | function updateExternalMeasurement(cm, line) { | |
2521 | line = visualLine(line); | |
2522 | var lineN = lineNo(line); | |
2523 | var view = cm.display.externalMeasured = new LineView(cm.doc, line, lineN); | |
2524 | view.lineN = lineN; | |
2525 | var built = view.built = buildLineContent(cm, view); | |
2526 | view.text = built.pre; | |
2527 | removeChildrenAndAdd(cm.display.lineMeasure, built.pre); | |
2528 | return view; | |
2529 | } | |
2530 | ||
2531 | // Get a {top, bottom, left, right} box (in line-local coordinates) | |
2532 | // for a given character. | |
2533 | function measureChar(cm, line, ch, bias) { | |
2534 | return measureCharPrepared(cm, prepareMeasureForLine(cm, line), ch, bias); | |
2535 | } | |
2536 | ||
2537 | // Find a line view that corresponds to the given line number. | |
2538 | function findViewForLine(cm, lineN) { | |
2539 | if (lineN >= cm.display.viewFrom && lineN < cm.display.viewTo) | |
2540 | return cm.display.view[findViewIndex(cm, lineN)]; | |
2541 | var ext = cm.display.externalMeasured; | |
2542 | if (ext && lineN >= ext.lineN && lineN < ext.lineN + ext.size) | |
2543 | return ext; | |
2544 | } | |
2545 | ||
2546 | // Measurement can be split in two steps, the set-up work that | |
2547 | // applies to the whole line, and the measurement of the actual | |
2548 | // character. Functions like coordsChar, that need to do a lot of | |
2549 | // measurements in a row, can thus ensure that the set-up work is | |
2550 | // only done once. | |
2551 | function prepareMeasureForLine(cm, line) { | |
2552 | var lineN = lineNo(line); | |
2553 | var view = findViewForLine(cm, lineN); | |
2554 | if (view && !view.text) | |
2555 | view = null; | |
2556 | else if (view && view.changes) | |
2557 | updateLineForChanges(cm, view, lineN, getDimensions(cm)); | |
2558 | if (!view) | |
2559 | view = updateExternalMeasurement(cm, line); | |
2560 | ||
2561 | var info = mapFromLineView(view, line, lineN); | |
2562 | return { | |
2563 | line: line, view: view, rect: null, | |
2564 | map: info.map, cache: info.cache, before: info.before, | |
2565 | hasHeights: false | |
2566 | }; | |
2567 | } | |
2568 | ||
2569 | // Given a prepared measurement object, measures the position of an | |
2570 | // actual character (or fetches it from the cache). | |
2571 | function measureCharPrepared(cm, prepared, ch, bias, varHeight) { | |
2572 | if (prepared.before) ch = -1; | |
2573 | var key = ch + (bias || ""), found; | |
2574 | if (prepared.cache.hasOwnProperty(key)) { | |
2575 | found = prepared.cache[key]; | |
2576 | } else { | |
2577 | if (!prepared.rect) | |
2578 | prepared.rect = prepared.view.text.getBoundingClientRect(); | |
2579 | if (!prepared.hasHeights) { | |
2580 | ensureLineHeights(cm, prepared.view, prepared.rect); | |
2581 | prepared.hasHeights = true; | |
2582 | } | |
2583 | found = measureCharInner(cm, prepared, ch, bias); | |
2584 | if (!found.bogus) prepared.cache[key] = found; | |
2585 | } | |
2586 | return {left: found.left, right: found.right, | |
2587 | top: varHeight ? found.rtop : found.top, | |
2588 | bottom: varHeight ? found.rbottom : found.bottom}; | |
2589 | } | |
2590 | ||
2591 | var nullRect = {left: 0, right: 0, top: 0, bottom: 0}; | |
2592 | ||
2593 | function nodeAndOffsetInLineMap(map, ch, bias) { | |
2594 | var node, start, end, collapse; | |
2595 | // First, search the line map for the text node corresponding to, | |
2596 | // or closest to, the target character. | |
2597 | for (var i = 0; i < map.length; i += 3) { | |
2598 | var mStart = map[i], mEnd = map[i + 1]; | |
2599 | if (ch < mStart) { | |
2600 | start = 0; end = 1; | |
2601 | collapse = "left"; | |
2602 | } else if (ch < mEnd) { | |
2603 | start = ch - mStart; | |
2604 | end = start + 1; | |
2605 | } else if (i == map.length - 3 || ch == mEnd && map[i + 3] > ch) { | |
2606 | end = mEnd - mStart; | |
2607 | start = end - 1; | |
2608 | if (ch >= mEnd) collapse = "right"; | |
2609 | } | |
2610 | if (start != null) { | |
2611 | node = map[i + 2]; | |
2612 | if (mStart == mEnd && bias == (node.insertLeft ? "left" : "right")) | |
2613 | collapse = bias; | |
2614 | if (bias == "left" && start == 0) | |
2615 | while (i && map[i - 2] == map[i - 3] && map[i - 1].insertLeft) { | |
2616 | node = map[(i -= 3) + 2]; | |
2617 | collapse = "left"; | |
2618 | } | |
2619 | if (bias == "right" && start == mEnd - mStart) | |
2620 | while (i < map.length - 3 && map[i + 3] == map[i + 4] && !map[i + 5].insertLeft) { | |
2621 | node = map[(i += 3) + 2]; | |
2622 | collapse = "right"; | |
2623 | } | |
2624 | break; | |
2625 | } | |
2626 | } | |
2627 | return {node: node, start: start, end: end, collapse: collapse, coverStart: mStart, coverEnd: mEnd}; | |
2628 | } | |
2629 | ||
2630 | function measureCharInner(cm, prepared, ch, bias) { | |
2631 | var place = nodeAndOffsetInLineMap(prepared.map, ch, bias); | |
2632 | var node = place.node, start = place.start, end = place.end, collapse = place.collapse; | |
2633 | ||
2634 | var rect; | |
2635 | if (node.nodeType == 3) { // If it is a text node, use a range to retrieve the coordinates. | |
2636 | for (var i = 0; i < 4; i++) { // Retry a maximum of 4 times when nonsense rectangles are returned | |
2637 | while (start && isExtendingChar(prepared.line.text.charAt(place.coverStart + start))) --start; | |
2638 | while (place.coverStart + end < place.coverEnd && isExtendingChar(prepared.line.text.charAt(place.coverStart + end))) ++end; | |
2639 | if (ie && ie_version < 9 && start == 0 && end == place.coverEnd - place.coverStart) { | |
2640 | rect = node.parentNode.getBoundingClientRect(); | |
2641 | } else if (ie && cm.options.lineWrapping) { | |
2642 | var rects = range(node, start, end).getClientRects(); | |
2643 | if (rects.length) | |
2644 | rect = rects[bias == "right" ? rects.length - 1 : 0]; | |
2645 | else | |
2646 | rect = nullRect; | |
2647 | } else { | |
2648 | rect = range(node, start, end).getBoundingClientRect() || nullRect; | |
2649 | } | |
2650 | if (rect.left || rect.right || start == 0) break; | |
2651 | end = start; | |
2652 | start = start - 1; | |
2653 | collapse = "right"; | |
2654 | } | |
2655 | if (ie && ie_version < 11) rect = maybeUpdateRectForZooming(cm.display.measure, rect); | |
2656 | } else { // If it is a widget, simply get the box for the whole widget. | |
2657 | if (start > 0) collapse = bias = "right"; | |
2658 | var rects; | |
2659 | if (cm.options.lineWrapping && (rects = node.getClientRects()).length > 1) | |
2660 | rect = rects[bias == "right" ? rects.length - 1 : 0]; | |
2661 | else | |
2662 | rect = node.getBoundingClientRect(); | |
2663 | } | |
2664 | if (ie && ie_version < 9 && !start && (!rect || !rect.left && !rect.right)) { | |
2665 | var rSpan = node.parentNode.getClientRects()[0]; | |
2666 | if (rSpan) | |
2667 | rect = {left: rSpan.left, right: rSpan.left + charWidth(cm.display), top: rSpan.top, bottom: rSpan.bottom}; | |
2668 | else | |
2669 | rect = nullRect; | |
2670 | } | |
2671 | ||
2672 | var rtop = rect.top - prepared.rect.top, rbot = rect.bottom - prepared.rect.top; | |
2673 | var mid = (rtop + rbot) / 2; | |
2674 | var heights = prepared.view.measure.heights; | |
2675 | for (var i = 0; i < heights.length - 1; i++) | |
2676 | if (mid < heights[i]) break; | |
2677 | var top = i ? heights[i - 1] : 0, bot = heights[i]; | |
2678 | var result = {left: (collapse == "right" ? rect.right : rect.left) - prepared.rect.left, | |
2679 | right: (collapse == "left" ? rect.left : rect.right) - prepared.rect.left, | |
2680 | top: top, bottom: bot}; | |
2681 | if (!rect.left && !rect.right) result.bogus = true; | |
2682 | if (!cm.options.singleCursorHeightPerLine) { result.rtop = rtop; result.rbottom = rbot; } | |
2683 | ||
2684 | return result; | |
2685 | } | |
2686 | ||
2687 | // Work around problem with bounding client rects on ranges being | |
2688 | // returned incorrectly when zoomed on IE10 and below. | |
2689 | function maybeUpdateRectForZooming(measure, rect) { | |
2690 | if (!window.screen || screen.logicalXDPI == null || | |
2691 | screen.logicalXDPI == screen.deviceXDPI || !hasBadZoomedRects(measure)) | |
2692 | return rect; | |
2693 | var scaleX = screen.logicalXDPI / screen.deviceXDPI; | |
2694 | var scaleY = screen.logicalYDPI / screen.deviceYDPI; | |
2695 | return {left: rect.left * scaleX, right: rect.right * scaleX, | |
2696 | top: rect.top * scaleY, bottom: rect.bottom * scaleY}; | |
2697 | } | |
2698 | ||
2699 | function clearLineMeasurementCacheFor(lineView) { | |
2700 | if (lineView.measure) { | |
2701 | lineView.measure.cache = {}; | |
2702 | lineView.measure.heights = null; | |
2703 | if (lineView.rest) for (var i = 0; i < lineView.rest.length; i++) | |
2704 | lineView.measure.caches[i] = {}; | |
2705 | } | |
2706 | } | |
2707 | ||
2708 | function clearLineMeasurementCache(cm) { | |
2709 | cm.display.externalMeasure = null; | |
2710 | removeChildren(cm.display.lineMeasure); | |
2711 | for (var i = 0; i < cm.display.view.length; i++) | |
2712 | clearLineMeasurementCacheFor(cm.display.view[i]); | |
2713 | } | |
2714 | ||
2715 | function clearCaches(cm) { | |
2716 | clearLineMeasurementCache(cm); | |
2717 | cm.display.cachedCharWidth = cm.display.cachedTextHeight = cm.display.cachedPaddingH = null; | |
2718 | if (!cm.options.lineWrapping) cm.display.maxLineChanged = true; | |
2719 | cm.display.lineNumChars = null; | |
2720 | } | |
2721 | ||
2722 | function pageScrollX() { return window.pageXOffset || (document.documentElement || document.body).scrollLeft; } | |
2723 | function pageScrollY() { return window.pageYOffset || (document.documentElement || document.body).scrollTop; } | |
2724 | ||
2725 | // Converts a {top, bottom, left, right} box from line-local | |
2726 | // coordinates into another coordinate system. Context may be one of | |
2727 | // "line", "div" (display.lineDiv), "local"/null (editor), "window", | |
2728 | // or "page". | |
2729 | function intoCoordSystem(cm, lineObj, rect, context) { | |
2730 | if (lineObj.widgets) for (var i = 0; i < lineObj.widgets.length; ++i) if (lineObj.widgets[i].above) { | |
2731 | var size = widgetHeight(lineObj.widgets[i]); | |
2732 | rect.top += size; rect.bottom += size; | |
2733 | } | |
2734 | if (context == "line") return rect; | |
2735 | if (!context) context = "local"; | |
2736 | var yOff = heightAtLine(lineObj); | |
2737 | if (context == "local") yOff += paddingTop(cm.display); | |
2738 | else yOff -= cm.display.viewOffset; | |
2739 | if (context == "page" || context == "window") { | |
2740 | var lOff = cm.display.lineSpace.getBoundingClientRect(); | |
2741 | yOff += lOff.top + (context == "window" ? 0 : pageScrollY()); | |
2742 | var xOff = lOff.left + (context == "window" ? 0 : pageScrollX()); | |
2743 | rect.left += xOff; rect.right += xOff; | |
2744 | } | |
2745 | rect.top += yOff; rect.bottom += yOff; | |
2746 | return rect; | |
2747 | } | |
2748 | ||
2749 | // Coverts a box from "div" coords to another coordinate system. | |
2750 | // Context may be "window", "page", "div", or "local"/null. | |
2751 | function fromCoordSystem(cm, coords, context) { | |
2752 | if (context == "div") return coords; | |
2753 | var left = coords.left, top = coords.top; | |
2754 | // First move into "page" coordinate system | |
2755 | if (context == "page") { | |
2756 | left -= pageScrollX(); | |
2757 | top -= pageScrollY(); | |
2758 | } else if (context == "local" || !context) { | |
2759 | var localBox = cm.display.sizer.getBoundingClientRect(); | |
2760 | left += localBox.left; | |
2761 | top += localBox.top; | |
2762 | } | |
2763 | ||
2764 | var lineSpaceBox = cm.display.lineSpace.getBoundingClientRect(); | |
2765 | return {left: left - lineSpaceBox.left, top: top - lineSpaceBox.top}; | |
2766 | } | |
2767 | ||
2768 | function charCoords(cm, pos, context, lineObj, bias) { | |
2769 | if (!lineObj) lineObj = getLine(cm.doc, pos.line); | |
2770 | return intoCoordSystem(cm, lineObj, measureChar(cm, lineObj, pos.ch, bias), context); | |
2771 | } | |
2772 | ||
2773 | // Returns a box for a given cursor position, which may have an | |
2774 | // 'other' property containing the position of the secondary cursor | |
2775 | // on a bidi boundary. | |
2776 | function cursorCoords(cm, pos, context, lineObj, preparedMeasure, varHeight) { | |
2777 | lineObj = lineObj || getLine(cm.doc, pos.line); | |
2778 | if (!preparedMeasure) preparedMeasure = prepareMeasureForLine(cm, lineObj); | |
2779 | function get(ch, right) { | |
2780 | var m = measureCharPrepared(cm, preparedMeasure, ch, right ? "right" : "left", varHeight); | |
2781 | if (right) m.left = m.right; else m.right = m.left; | |
2782 | return intoCoordSystem(cm, lineObj, m, context); | |
2783 | } | |
2784 | function getBidi(ch, partPos) { | |
2785 | var part = order[partPos], right = part.level % 2; | |
2786 | if (ch == bidiLeft(part) && partPos && part.level < order[partPos - 1].level) { | |
2787 | part = order[--partPos]; | |
2788 | ch = bidiRight(part) - (part.level % 2 ? 0 : 1); | |
2789 | right = true; | |
2790 | } else if (ch == bidiRight(part) && partPos < order.length - 1 && part.level < order[partPos + 1].level) { | |
2791 | part = order[++partPos]; | |
2792 | ch = bidiLeft(part) - part.level % 2; | |
2793 | right = false; | |
2794 | } | |
2795 | if (right && ch == part.to && ch > part.from) return get(ch - 1); | |
2796 | return get(ch, right); | |
2797 | } | |
2798 | var order = getOrder(lineObj), ch = pos.ch; | |
2799 | if (!order) return get(ch); | |
2800 | var partPos = getBidiPartAt(order, ch); | |
2801 | var val = getBidi(ch, partPos); | |
2802 | if (bidiOther != null) val.other = getBidi(ch, bidiOther); | |
2803 | return val; | |
2804 | } | |
2805 | ||
2806 | // Used to cheaply estimate the coordinates for a position. Used for | |
2807 | // intermediate scroll updates. | |
2808 | function estimateCoords(cm, pos) { | |
2809 | var left = 0, pos = clipPos(cm.doc, pos); | |
2810 | if (!cm.options.lineWrapping) left = charWidth(cm.display) * pos.ch; | |
2811 | var lineObj = getLine(cm.doc, pos.line); | |
2812 | var top = heightAtLine(lineObj) + paddingTop(cm.display); | |
2813 | return {left: left, right: left, top: top, bottom: top + lineObj.height}; | |
2814 | } | |
2815 | ||
2816 | // Positions returned by coordsChar contain some extra information. | |
2817 | // xRel is the relative x position of the input coordinates compared | |
2818 | // to the found position (so xRel > 0 means the coordinates are to | |
2819 | // the right of the character position, for example). When outside | |
2820 | // is true, that means the coordinates lie outside the line's | |
2821 | // vertical range. | |
2822 | function PosWithInfo(line, ch, outside, xRel) { | |
2823 | var pos = Pos(line, ch); | |
2824 | pos.xRel = xRel; | |
2825 | if (outside) pos.outside = true; | |
2826 | return pos; | |
2827 | } | |
2828 | ||
2829 | // Compute the character position closest to the given coordinates. | |
2830 | // Input must be lineSpace-local ("div" coordinate system). | |
2831 | function coordsChar(cm, x, y) { | |
2832 | var doc = cm.doc; | |
2833 | y += cm.display.viewOffset; | |
2834 | if (y < 0) return PosWithInfo(doc.first, 0, true, -1); | |
2835 | var lineN = lineAtHeight(doc, y), last = doc.first + doc.size - 1; | |
2836 | if (lineN > last) | |
2837 | return PosWithInfo(doc.first + doc.size - 1, getLine(doc, last).text.length, true, 1); | |
2838 | if (x < 0) x = 0; | |
2839 | ||
2840 | var lineObj = getLine(doc, lineN); | |
2841 | for (;;) { | |
2842 | var found = coordsCharInner(cm, lineObj, lineN, x, y); | |
2843 | var merged = collapsedSpanAtEnd(lineObj); | |
2844 | var mergedPos = merged && merged.find(0, true); | |
2845 | if (merged && (found.ch > mergedPos.from.ch || found.ch == mergedPos.from.ch && found.xRel > 0)) | |
2846 | lineN = lineNo(lineObj = mergedPos.to.line); | |
2847 | else | |
2848 | return found; | |
2849 | } | |
2850 | } | |
2851 | ||
2852 | function coordsCharInner(cm, lineObj, lineNo, x, y) { | |
2853 | var innerOff = y - heightAtLine(lineObj); | |
2854 | var wrongLine = false, adjust = 2 * cm.display.wrapper.clientWidth; | |
2855 | var preparedMeasure = prepareMeasureForLine(cm, lineObj); | |
2856 | ||
2857 | function getX(ch) { | |
2858 | var sp = cursorCoords(cm, Pos(lineNo, ch), "line", lineObj, preparedMeasure); | |
2859 | wrongLine = true; | |
2860 | if (innerOff > sp.bottom) return sp.left - adjust; | |
2861 | else if (innerOff < sp.top) return sp.left + adjust; | |
2862 | else wrongLine = false; | |
2863 | return sp.left; | |
2864 | } | |
2865 | ||
2866 | var bidi = getOrder(lineObj), dist = lineObj.text.length; | |
2867 | var from = lineLeft(lineObj), to = lineRight(lineObj); | |
2868 | var fromX = getX(from), fromOutside = wrongLine, toX = getX(to), toOutside = wrongLine; | |
2869 | ||
2870 | if (x > toX) return PosWithInfo(lineNo, to, toOutside, 1); | |
2871 | // Do a binary search between these bounds. | |
2872 | for (;;) { | |
2873 | if (bidi ? to == from || to == moveVisually(lineObj, from, 1) : to - from <= 1) { | |
2874 | var ch = x < fromX || x - fromX <= toX - x ? from : to; | |
2875 | var xDiff = x - (ch == from ? fromX : toX); | |
2876 | while (isExtendingChar(lineObj.text.charAt(ch))) ++ch; | |
2877 | var pos = PosWithInfo(lineNo, ch, ch == from ? fromOutside : toOutside, | |
2878 | xDiff < -1 ? -1 : xDiff > 1 ? 1 : 0); | |
2879 | return pos; | |
2880 | } | |
2881 | var step = Math.ceil(dist / 2), middle = from + step; | |
2882 | if (bidi) { | |
2883 | middle = from; | |
2884 | for (var i = 0; i < step; ++i) middle = moveVisually(lineObj, middle, 1); | |
2885 | } | |
2886 | var middleX = getX(middle); | |
2887 | if (middleX > x) {to = middle; toX = middleX; if (toOutside = wrongLine) toX += 1000; dist = step;} | |
2888 | else {from = middle; fromX = middleX; fromOutside = wrongLine; dist -= step;} | |
2889 | } | |
2890 | } | |
2891 | ||
2892 | var measureText; | |
2893 | // Compute the default text height. | |
2894 | function textHeight(display) { | |
2895 | if (display.cachedTextHeight != null) return display.cachedTextHeight; | |
2896 | if (measureText == null) { | |
2897 | measureText = elt("pre"); | |
2898 | // Measure a bunch of lines, for browsers that compute | |
2899 | // fractional heights. | |
2900 | for (var i = 0; i < 49; ++i) { | |
2901 | measureText.appendChild(document.createTextNode("x")); | |
2902 | measureText.appendChild(elt("br")); | |
2903 | } | |
2904 | measureText.appendChild(document.createTextNode("x")); | |
2905 | } | |
2906 | removeChildrenAndAdd(display.measure, measureText); | |
2907 | var height = measureText.offsetHeight / 50; | |
2908 | if (height > 3) display.cachedTextHeight = height; | |
2909 | removeChildren(display.measure); | |
2910 | return height || 1; | |
2911 | } | |
2912 | ||
2913 | // Compute the default character width. | |
2914 | function charWidth(display) { | |
2915 | if (display.cachedCharWidth != null) return display.cachedCharWidth; | |
2916 | var anchor = elt("span", "xxxxxxxxxx"); | |
2917 | var pre = elt("pre", [anchor]); | |
2918 | removeChildrenAndAdd(display.measure, pre); | |
2919 | var rect = anchor.getBoundingClientRect(), width = (rect.right - rect.left) / 10; | |
2920 | if (width > 2) display.cachedCharWidth = width; | |
2921 | return width || 10; | |
2922 | } | |
2923 | ||
2924 | // OPERATIONS | |
2925 | ||
2926 | // Operations are used to wrap a series of changes to the editor | |
2927 | // state in such a way that each change won't have to update the | |
2928 | // cursor and display (which would be awkward, slow, and | |
2929 | // error-prone). Instead, display updates are batched and then all | |
2930 | // combined and executed at once. | |
2931 | ||
2932 | var operationGroup = null; | |
2933 | ||
2934 | var nextOpId = 0; | |
2935 | // Start a new operation. | |
2936 | function startOperation(cm) { | |
2937 | cm.curOp = { | |
2938 | cm: cm, | |
2939 | viewChanged: false, // Flag that indicates that lines might need to be redrawn | |
2940 | startHeight: cm.doc.height, // Used to detect need to update scrollbar | |
2941 | forceUpdate: false, // Used to force a redraw | |
2942 | updateInput: null, // Whether to reset the input textarea | |
2943 | typing: false, // Whether this reset should be careful to leave existing text (for compositing) | |
2944 | changeObjs: null, // Accumulated changes, for firing change events | |
2945 | cursorActivityHandlers: null, // Set of handlers to fire cursorActivity on | |
2946 | cursorActivityCalled: 0, // Tracks which cursorActivity handlers have been called already | |
2947 | selectionChanged: false, // Whether the selection needs to be redrawn | |
2948 | updateMaxLine: false, // Set when the widest line needs to be determined anew | |
2949 | scrollLeft: null, scrollTop: null, // Intermediate scroll position, not pushed to DOM yet | |
2950 | scrollToPos: null, // Used to scroll to a specific position | |
2951 | focus: false, | |
2952 | id: ++nextOpId // Unique ID | |
2953 | }; | |
2954 | if (operationGroup) { | |
2955 | operationGroup.ops.push(cm.curOp); | |
2956 | } else { | |
2957 | cm.curOp.ownsGroup = operationGroup = { | |
2958 | ops: [cm.curOp], | |
2959 | delayedCallbacks: [] | |
2960 | }; | |
2961 | } | |
2962 | } | |
2963 | ||
2964 | function fireCallbacksForOps(group) { | |
2965 | // Calls delayed callbacks and cursorActivity handlers until no | |
2966 | // new ones appear | |
2967 | var callbacks = group.delayedCallbacks, i = 0; | |
2968 | do { | |
2969 | for (; i < callbacks.length; i++) | |
2970 | callbacks[i](); | |
2971 | for (var j = 0; j < group.ops.length; j++) { | |
2972 | var op = group.ops[j]; | |
2973 | if (op.cursorActivityHandlers) | |
2974 | while (op.cursorActivityCalled < op.cursorActivityHandlers.length) | |
2975 | op.cursorActivityHandlers[op.cursorActivityCalled++](op.cm); | |
2976 | } | |
2977 | } while (i < callbacks.length); | |
2978 | } | |
2979 | ||
2980 | // Finish an operation, updating the display and signalling delayed events | |
2981 | function endOperation(cm) { | |
2982 | var op = cm.curOp, group = op.ownsGroup; | |
2983 | if (!group) return; | |
2984 | ||
2985 | try { fireCallbacksForOps(group); } | |
2986 | finally { | |
2987 | operationGroup = null; | |
2988 | for (var i = 0; i < group.ops.length; i++) | |
2989 | group.ops[i].cm.curOp = null; | |
2990 | endOperations(group); | |
2991 | } | |
2992 | } | |
2993 | ||
2994 | // The DOM updates done when an operation finishes are batched so | |
2995 | // that the minimum number of relayouts are required. | |
2996 | function endOperations(group) { | |
2997 | var ops = group.ops; | |
2998 | for (var i = 0; i < ops.length; i++) // Read DOM | |
2999 | endOperation_R1(ops[i]); | |
3000 | for (var i = 0; i < ops.length; i++) // Write DOM (maybe) | |
3001 | endOperation_W1(ops[i]); | |
3002 | for (var i = 0; i < ops.length; i++) // Read DOM | |
3003 | endOperation_R2(ops[i]); | |
3004 | for (var i = 0; i < ops.length; i++) // Write DOM (maybe) | |
3005 | endOperation_W2(ops[i]); | |
3006 | for (var i = 0; i < ops.length; i++) // Read DOM | |
3007 | endOperation_finish(ops[i]); | |
3008 | } | |
3009 | ||
3010 | function endOperation_R1(op) { | |
3011 | var cm = op.cm, display = cm.display; | |
3012 | maybeClipScrollbars(cm); | |
3013 | if (op.updateMaxLine) findMaxLine(cm); | |
3014 | ||
3015 | op.mustUpdate = op.viewChanged || op.forceUpdate || op.scrollTop != null || | |
3016 | op.scrollToPos && (op.scrollToPos.from.line < display.viewFrom || | |
3017 | op.scrollToPos.to.line >= display.viewTo) || | |
3018 | display.maxLineChanged && cm.options.lineWrapping; | |
3019 | op.update = op.mustUpdate && | |
3020 | new DisplayUpdate(cm, op.mustUpdate && {top: op.scrollTop, ensure: op.scrollToPos}, op.forceUpdate); | |
3021 | } | |
3022 | ||
3023 | function endOperation_W1(op) { | |
3024 | op.updatedDisplay = op.mustUpdate && updateDisplayIfNeeded(op.cm, op.update); | |
3025 | } | |
3026 | ||
3027 | function endOperation_R2(op) { | |
3028 | var cm = op.cm, display = cm.display; | |
3029 | if (op.updatedDisplay) updateHeightsInViewport(cm); | |
3030 | ||
3031 | op.barMeasure = measureForScrollbars(cm); | |
3032 | ||
3033 | // If the max line changed since it was last measured, measure it, | |
3034 | // and ensure the document's width matches it. | |
3035 | // updateDisplay_W2 will use these properties to do the actual resizing | |
3036 | if (display.maxLineChanged && !cm.options.lineWrapping) { | |
3037 | op.adjustWidthTo = measureChar(cm, display.maxLine, display.maxLine.text.length).left + 3; | |
3038 | cm.display.sizerWidth = op.adjustWidthTo; | |
3039 | op.barMeasure.scrollWidth = | |
3040 | Math.max(display.scroller.clientWidth, display.sizer.offsetLeft + op.adjustWidthTo + scrollGap(cm) + cm.display.barWidth); | |
3041 | op.maxScrollLeft = Math.max(0, display.sizer.offsetLeft + op.adjustWidthTo - displayWidth(cm)); | |
3042 | } | |
3043 | ||
3044 | if (op.updatedDisplay || op.selectionChanged) | |
3045 | op.preparedSelection = display.input.prepareSelection(); | |
3046 | } | |
3047 | ||
3048 | function endOperation_W2(op) { | |
3049 | var cm = op.cm; | |
3050 | ||
3051 | if (op.adjustWidthTo != null) { | |
3052 | cm.display.sizer.style.minWidth = op.adjustWidthTo + "px"; | |
3053 | if (op.maxScrollLeft < cm.doc.scrollLeft) | |
3054 | setScrollLeft(cm, Math.min(cm.display.scroller.scrollLeft, op.maxScrollLeft), true); | |
3055 | cm.display.maxLineChanged = false; | |
3056 | } | |
3057 | ||
3058 | if (op.preparedSelection) | |
3059 | cm.display.input.showSelection(op.preparedSelection); | |
3060 | if (op.updatedDisplay) | |
3061 | setDocumentHeight(cm, op.barMeasure); | |
3062 | if (op.updatedDisplay || op.startHeight != cm.doc.height) | |
3063 | updateScrollbars(cm, op.barMeasure); | |
3064 | ||
3065 | if (op.selectionChanged) restartBlink(cm); | |
3066 | ||
3067 | if (cm.state.focused && op.updateInput) | |
3068 | cm.display.input.reset(op.typing); | |
3069 | if (op.focus && op.focus == activeElt()) ensureFocus(op.cm); | |
3070 | } | |
3071 | ||
3072 | function endOperation_finish(op) { | |
3073 | var cm = op.cm, display = cm.display, doc = cm.doc; | |
3074 | ||
3075 | if (op.updatedDisplay) postUpdateDisplay(cm, op.update); | |
3076 | ||
3077 | // Abort mouse wheel delta measurement, when scrolling explicitly | |
3078 | if (display.wheelStartX != null && (op.scrollTop != null || op.scrollLeft != null || op.scrollToPos)) | |
3079 | display.wheelStartX = display.wheelStartY = null; | |
3080 | ||
3081 | // Propagate the scroll position to the actual DOM scroller | |
3082 | if (op.scrollTop != null && (display.scroller.scrollTop != op.scrollTop || op.forceScroll)) { | |
3083 | doc.scrollTop = Math.max(0, Math.min(display.scroller.scrollHeight - display.scroller.clientHeight, op.scrollTop)); | |
3084 | display.scrollbars.setScrollTop(doc.scrollTop); | |
3085 | display.scroller.scrollTop = doc.scrollTop; | |
3086 | } | |
3087 | if (op.scrollLeft != null && (display.scroller.scrollLeft != op.scrollLeft || op.forceScroll)) { | |
3088 | doc.scrollLeft = Math.max(0, Math.min(display.scroller.scrollWidth - displayWidth(cm), op.scrollLeft)); | |
3089 | display.scrollbars.setScrollLeft(doc.scrollLeft); | |
3090 | display.scroller.scrollLeft = doc.scrollLeft; | |
3091 | alignHorizontally(cm); | |
3092 | } | |
3093 | // If we need to scroll a specific position into view, do so. | |
3094 | if (op.scrollToPos) { | |
3095 | var coords = scrollPosIntoView(cm, clipPos(doc, op.scrollToPos.from), | |
3096 | clipPos(doc, op.scrollToPos.to), op.scrollToPos.margin); | |
3097 | if (op.scrollToPos.isCursor && cm.state.focused) maybeScrollWindow(cm, coords); | |
3098 | } | |
3099 | ||
3100 | // Fire events for markers that are hidden/unidden by editing or | |
3101 | // undoing | |
3102 | var hidden = op.maybeHiddenMarkers, unhidden = op.maybeUnhiddenMarkers; | |
3103 | if (hidden) for (var i = 0; i < hidden.length; ++i) | |
3104 | if (!hidden[i].lines.length) signal(hidden[i], "hide"); | |
3105 | if (unhidden) for (var i = 0; i < unhidden.length; ++i) | |
3106 | if (unhidden[i].lines.length) signal(unhidden[i], "unhide"); | |
3107 | ||
3108 | if (display.wrapper.offsetHeight) | |
3109 | doc.scrollTop = cm.display.scroller.scrollTop; | |
3110 | ||
3111 | // Fire change events, and delayed event handlers | |
3112 | if (op.changeObjs) | |
3113 | signal(cm, "changes", cm, op.changeObjs); | |
3114 | if (op.update) | |
3115 | op.update.finish(); | |
3116 | } | |
3117 | ||
3118 | // Run the given function in an operation | |
3119 | function runInOp(cm, f) { | |
3120 | if (cm.curOp) return f(); | |
3121 | startOperation(cm); | |
3122 | try { return f(); } | |
3123 | finally { endOperation(cm); } | |
3124 | } | |
3125 | // Wraps a function in an operation. Returns the wrapped function. | |
3126 | function operation(cm, f) { | |
3127 | return function() { | |
3128 | if (cm.curOp) return f.apply(cm, arguments); | |
3129 | startOperation(cm); | |
3130 | try { return f.apply(cm, arguments); } | |
3131 | finally { endOperation(cm); } | |
3132 | }; | |
3133 | } | |
3134 | // Used to add methods to editor and doc instances, wrapping them in | |
3135 | // operations. | |
3136 | function methodOp(f) { | |
3137 | return function() { | |
3138 | if (this.curOp) return f.apply(this, arguments); | |
3139 | startOperation(this); | |
3140 | try { return f.apply(this, arguments); } | |
3141 | finally { endOperation(this); } | |
3142 | }; | |
3143 | } | |
3144 | function docMethodOp(f) { | |
3145 | return function() { | |
3146 | var cm = this.cm; | |
3147 | if (!cm || cm.curOp) return f.apply(this, arguments); | |
3148 | startOperation(cm); | |
3149 | try { return f.apply(this, arguments); } | |
3150 | finally { endOperation(cm); } | |
3151 | }; | |
3152 | } | |
3153 | ||
3154 | // VIEW TRACKING | |
3155 | ||
3156 | // These objects are used to represent the visible (currently drawn) | |
3157 | // part of the document. A LineView may correspond to multiple | |
3158 | // logical lines, if those are connected by collapsed ranges. | |
3159 | function LineView(doc, line, lineN) { | |
3160 | // The starting line | |
3161 | this.line = line; | |
3162 | // Continuing lines, if any | |
3163 | this.rest = visualLineContinued(line); | |
3164 | // Number of logical lines in this visual line | |
3165 | this.size = this.rest ? lineNo(lst(this.rest)) - lineN + 1 : 1; | |
3166 | this.node = this.text = null; | |
3167 | this.hidden = lineIsHidden(doc, line); | |
3168 | } | |
3169 | ||
3170 | // Create a range of LineView objects for the given lines. | |
3171 | function buildViewArray(cm, from, to) { | |
3172 | var array = [], nextPos; | |
3173 | for (var pos = from; pos < to; pos = nextPos) { | |
3174 | var view = new LineView(cm.doc, getLine(cm.doc, pos), pos); | |
3175 | nextPos = pos + view.size; | |
3176 | array.push(view); | |
3177 | } | |
3178 | return array; | |
3179 | } | |
3180 | ||
3181 | // Updates the display.view data structure for a given change to the | |
3182 | // document. From and to are in pre-change coordinates. Lendiff is | |
3183 | // the amount of lines added or subtracted by the change. This is | |
3184 | // used for changes that span multiple lines, or change the way | |
3185 | // lines are divided into visual lines. regLineChange (below) | |
3186 | // registers single-line changes. | |
3187 | function regChange(cm, from, to, lendiff) { | |
3188 | if (from == null) from = cm.doc.first; | |
3189 | if (to == null) to = cm.doc.first + cm.doc.size; | |
3190 | if (!lendiff) lendiff = 0; | |
3191 | ||
3192 | var display = cm.display; | |
3193 | if (lendiff && to < display.viewTo && | |
3194 | (display.updateLineNumbers == null || display.updateLineNumbers > from)) | |
3195 | display.updateLineNumbers = from; | |
3196 | ||
3197 | cm.curOp.viewChanged = true; | |
3198 | ||
3199 | if (from >= display.viewTo) { // Change after | |
3200 | if (sawCollapsedSpans && visualLineNo(cm.doc, from) < display.viewTo) | |
3201 | resetView(cm); | |
3202 | } else if (to <= display.viewFrom) { // Change before | |
3203 | if (sawCollapsedSpans && visualLineEndNo(cm.doc, to + lendiff) > display.viewFrom) { | |
3204 | resetView(cm); | |
3205 | } else { | |
3206 | display.viewFrom += lendiff; | |
3207 | display.viewTo += lendiff; | |
3208 | } | |
3209 | } else if (from <= display.viewFrom && to >= display.viewTo) { // Full overlap | |
3210 | resetView(cm); | |
3211 | } else if (from <= display.viewFrom) { // Top overlap | |
3212 | var cut = viewCuttingPoint(cm, to, to + lendiff, 1); | |
3213 | if (cut) { | |
3214 | display.view = display.view.slice(cut.index); | |
3215 | display.viewFrom = cut.lineN; | |
3216 | display.viewTo += lendiff; | |
3217 | } else { | |
3218 | resetView(cm); | |
3219 | } | |
3220 | } else if (to >= display.viewTo) { // Bottom overlap | |
3221 | var cut = viewCuttingPoint(cm, from, from, -1); | |
3222 | if (cut) { | |
3223 | display.view = display.view.slice(0, cut.index); | |
3224 | display.viewTo = cut.lineN; | |
3225 | } else { | |
3226 | resetView(cm); | |
3227 | } | |
3228 | } else { // Gap in the middle | |
3229 | var cutTop = viewCuttingPoint(cm, from, from, -1); | |
3230 | var cutBot = viewCuttingPoint(cm, to, to + lendiff, 1); | |
3231 | if (cutTop && cutBot) { | |
3232 | display.view = display.view.slice(0, cutTop.index) | |
3233 | .concat(buildViewArray(cm, cutTop.lineN, cutBot.lineN)) | |
3234 | .concat(display.view.slice(cutBot.index)); | |
3235 | display.viewTo += lendiff; | |
3236 | } else { | |
3237 | resetView(cm); | |
3238 | } | |
3239 | } | |
3240 | ||
3241 | var ext = display.externalMeasured; | |
3242 | if (ext) { | |
3243 | if (to < ext.lineN) | |
3244 | ext.lineN += lendiff; | |
3245 | else if (from < ext.lineN + ext.size) | |
3246 | display.externalMeasured = null; | |
3247 | } | |
3248 | } | |
3249 | ||
3250 | // Register a change to a single line. Type must be one of "text", | |
3251 | // "gutter", "class", "widget" | |
3252 | function regLineChange(cm, line, type) { | |
3253 | cm.curOp.viewChanged = true; | |
3254 | var display = cm.display, ext = cm.display.externalMeasured; | |
3255 | if (ext && line >= ext.lineN && line < ext.lineN + ext.size) | |
3256 | display.externalMeasured = null; | |
3257 | ||
3258 | if (line < display.viewFrom || line >= display.viewTo) return; | |
3259 | var lineView = display.view[findViewIndex(cm, line)]; | |
3260 | if (lineView.node == null) return; | |
3261 | var arr = lineView.changes || (lineView.changes = []); | |
3262 | if (indexOf(arr, type) == -1) arr.push(type); | |
3263 | } | |
3264 | ||
3265 | // Clear the view. | |
3266 | function resetView(cm) { | |
3267 | cm.display.viewFrom = cm.display.viewTo = cm.doc.first; | |
3268 | cm.display.view = []; | |
3269 | cm.display.viewOffset = 0; | |
3270 | } | |
3271 | ||
3272 | // Find the view element corresponding to a given line. Return null | |
3273 | // when the line isn't visible. | |
3274 | function findViewIndex(cm, n) { | |
3275 | if (n >= cm.display.viewTo) return null; | |
3276 | n -= cm.display.viewFrom; | |
3277 | if (n < 0) return null; | |
3278 | var view = cm.display.view; | |
3279 | for (var i = 0; i < view.length; i++) { | |
3280 | n -= view[i].size; | |
3281 | if (n < 0) return i; | |
3282 | } | |
3283 | } | |
3284 | ||
3285 | function viewCuttingPoint(cm, oldN, newN, dir) { | |
3286 | var index = findViewIndex(cm, oldN), diff, view = cm.display.view; | |
3287 | if (!sawCollapsedSpans || newN == cm.doc.first + cm.doc.size) | |
3288 | return {index: index, lineN: newN}; | |
3289 | for (var i = 0, n = cm.display.viewFrom; i < index; i++) | |
3290 | n += view[i].size; | |
3291 | if (n != oldN) { | |
3292 | if (dir > 0) { | |
3293 | if (index == view.length - 1) return null; | |
3294 | diff = (n + view[index].size) - oldN; | |
3295 | index++; | |
3296 | } else { | |
3297 | diff = n - oldN; | |
3298 | } | |
3299 | oldN += diff; newN += diff; | |
3300 | } | |
3301 | while (visualLineNo(cm.doc, newN) != newN) { | |
3302 | if (index == (dir < 0 ? 0 : view.length - 1)) return null; | |
3303 | newN += dir * view[index - (dir < 0 ? 1 : 0)].size; | |
3304 | index += dir; | |
3305 | } | |
3306 | return {index: index, lineN: newN}; | |
3307 | } | |
3308 | ||
3309 | // Force the view to cover a given range, adding empty view element | |
3310 | // or clipping off existing ones as needed. | |
3311 | function adjustView(cm, from, to) { | |
3312 | var display = cm.display, view = display.view; | |
3313 | if (view.length == 0 || from >= display.viewTo || to <= display.viewFrom) { | |
3314 | display.view = buildViewArray(cm, from, to); | |
3315 | display.viewFrom = from; | |
3316 | } else { | |
3317 | if (display.viewFrom > from) | |
3318 | display.view = buildViewArray(cm, from, display.viewFrom).concat(display.view); | |
3319 | else if (display.viewFrom < from) | |
3320 | display.view = display.view.slice(findViewIndex(cm, from)); | |
3321 | display.viewFrom = from; | |
3322 | if (display.viewTo < to) | |
3323 | display.view = display.view.concat(buildViewArray(cm, display.viewTo, to)); | |
3324 | else if (display.viewTo > to) | |
3325 | display.view = display.view.slice(0, findViewIndex(cm, to)); | |
3326 | } | |
3327 | display.viewTo = to; | |
3328 | } | |
3329 | ||
3330 | // Count the number of lines in the view whose DOM representation is | |
3331 | // out of date (or nonexistent). | |
3332 | function countDirtyView(cm) { | |
3333 | var view = cm.display.view, dirty = 0; | |
3334 | for (var i = 0; i < view.length; i++) { | |
3335 | var lineView = view[i]; | |
3336 | if (!lineView.hidden && (!lineView.node || lineView.changes)) ++dirty; | |
3337 | } | |
3338 | return dirty; | |
3339 | } | |
3340 | ||
3341 | // EVENT HANDLERS | |
3342 | ||
3343 | // Attach the necessary event handlers when initializing the editor | |
3344 | function registerEventHandlers(cm) { | |
3345 | var d = cm.display; | |
3346 | on(d.scroller, "mousedown", operation(cm, onMouseDown)); | |
3347 | // Older IE's will not fire a second mousedown for a double click | |
3348 | if (ie && ie_version < 11) | |
3349 | on(d.scroller, "dblclick", operation(cm, function(e) { | |
3350 | if (signalDOMEvent(cm, e)) return; | |
3351 | var pos = posFromMouse(cm, e); | |
3352 | if (!pos || clickInGutter(cm, e) || eventInWidget(cm.display, e)) return; | |
3353 | e_preventDefault(e); | |
3354 | var word = cm.findWordAt(pos); | |
3355 | extendSelection(cm.doc, word.anchor, word.head); | |
3356 | })); | |
3357 | else | |
3358 | on(d.scroller, "dblclick", function(e) { signalDOMEvent(cm, e) || e_preventDefault(e); }); | |
3359 | // Some browsers fire contextmenu *after* opening the menu, at | |
3360 | // which point we can't mess with it anymore. Context menu is | |
3361 | // handled in onMouseDown for these browsers. | |
3362 | if (!captureRightClick) on(d.scroller, "contextmenu", function(e) {onContextMenu(cm, e);}); | |
3363 | ||
3364 | // Used to suppress mouse event handling when a touch happens | |
3365 | var touchFinished, prevTouch = {end: 0}; | |
3366 | function finishTouch() { | |
3367 | if (d.activeTouch) { | |
3368 | touchFinished = setTimeout(function() {d.activeTouch = null;}, 1000); | |
3369 | prevTouch = d.activeTouch; | |
3370 | prevTouch.end = +new Date; | |
3371 | } | |
3372 | }; | |
3373 | function isMouseLikeTouchEvent(e) { | |
3374 | if (e.touches.length != 1) return false; | |
3375 | var touch = e.touches[0]; | |
3376 | return touch.radiusX <= 1 && touch.radiusY <= 1; | |
3377 | } | |
3378 | function farAway(touch, other) { | |
3379 | if (other.left == null) return true; | |
3380 | var dx = other.left - touch.left, dy = other.top - touch.top; | |
3381 | return dx * dx + dy * dy > 20 * 20; | |
3382 | } | |
3383 | on(d.scroller, "touchstart", function(e) { | |
3384 | if (!isMouseLikeTouchEvent(e)) { | |
3385 | clearTimeout(touchFinished); | |
3386 | var now = +new Date; | |
3387 | d.activeTouch = {start: now, moved: false, | |
3388 | prev: now - prevTouch.end <= 300 ? prevTouch : null}; | |
3389 | if (e.touches.length == 1) { | |
3390 | d.activeTouch.left = e.touches[0].pageX; | |
3391 | d.activeTouch.top = e.touches[0].pageY; | |
3392 | } | |
3393 | } | |
3394 | }); | |
3395 | on(d.scroller, "touchmove", function() { | |
3396 | if (d.activeTouch) d.activeTouch.moved = true; | |
3397 | }); | |
3398 | on(d.scroller, "touchend", function(e) { | |
3399 | var touch = d.activeTouch; | |
3400 | if (touch && !eventInWidget(d, e) && touch.left != null && | |
3401 | !touch.moved && new Date - touch.start < 300) { | |
3402 | var pos = cm.coordsChar(d.activeTouch, "page"), range; | |
3403 | if (!touch.prev || farAway(touch, touch.prev)) // Single tap | |
3404 | range = new Range(pos, pos); | |
3405 | else if (!touch.prev.prev || farAway(touch, touch.prev.prev)) // Double tap | |
3406 | range = cm.findWordAt(pos); | |
3407 | else // Triple tap | |
3408 | range = new Range(Pos(pos.line, 0), clipPos(cm.doc, Pos(pos.line + 1, 0))); | |
3409 | cm.setSelection(range.anchor, range.head); | |
3410 | cm.focus(); | |
3411 | e_preventDefault(e); | |
3412 | } | |
3413 | finishTouch(); | |
3414 | }); | |
3415 | on(d.scroller, "touchcancel", finishTouch); | |
3416 | ||
3417 | // Sync scrolling between fake scrollbars and real scrollable | |
3418 | // area, ensure viewport is updated when scrolling. | |
3419 | on(d.scroller, "scroll", function() { | |
3420 | if (d.scroller.clientHeight) { | |
3421 | setScrollTop(cm, d.scroller.scrollTop); | |
3422 | setScrollLeft(cm, d.scroller.scrollLeft, true); | |
3423 | signal(cm, "scroll", cm); | |
3424 | } | |
3425 | }); | |
3426 | ||
3427 | // Listen to wheel events in order to try and update the viewport on time. | |
3428 | on(d.scroller, "mousewheel", function(e){onScrollWheel(cm, e);}); | |
3429 | on(d.scroller, "DOMMouseScroll", function(e){onScrollWheel(cm, e);}); | |
3430 | ||
3431 | // Prevent wrapper from ever scrolling | |
3432 | on(d.wrapper, "scroll", function() { d.wrapper.scrollTop = d.wrapper.scrollLeft = 0; }); | |
3433 | ||
3434 | d.dragFunctions = { | |
3435 | simple: function(e) {if (!signalDOMEvent(cm, e)) e_stop(e);}, | |
3436 | start: function(e){onDragStart(cm, e);}, | |
3437 | drop: operation(cm, onDrop) | |
3438 | }; | |
3439 | ||
3440 | var inp = d.input.getField(); | |
3441 | on(inp, "keyup", function(e) { onKeyUp.call(cm, e); }); | |
3442 | on(inp, "keydown", operation(cm, onKeyDown)); | |
3443 | on(inp, "keypress", operation(cm, onKeyPress)); | |
3444 | on(inp, "focus", bind(onFocus, cm)); | |
3445 | on(inp, "blur", bind(onBlur, cm)); | |
3446 | } | |
3447 | ||
3448 | function dragDropChanged(cm, value, old) { | |
3449 | var wasOn = old && old != CodeMirror.Init; | |
3450 | if (!value != !wasOn) { | |
3451 | var funcs = cm.display.dragFunctions; | |
3452 | var toggle = value ? on : off; | |
3453 | toggle(cm.display.scroller, "dragstart", funcs.start); | |
3454 | toggle(cm.display.scroller, "dragenter", funcs.simple); | |
3455 | toggle(cm.display.scroller, "dragover", funcs.simple); | |
3456 | toggle(cm.display.scroller, "drop", funcs.drop); | |
3457 | } | |
3458 | } | |
3459 | ||
3460 | // Called when the window resizes | |
3461 | function onResize(cm) { | |
3462 | var d = cm.display; | |
3463 | if (d.lastWrapHeight == d.wrapper.clientHeight && d.lastWrapWidth == d.wrapper.clientWidth) | |
3464 | return; | |
3465 | // Might be a text scaling operation, clear size caches. | |
3466 | d.cachedCharWidth = d.cachedTextHeight = d.cachedPaddingH = null; | |
3467 | d.scrollbarsClipped = false; | |
3468 | cm.setSize(); | |
3469 | } | |
3470 | ||
3471 | // MOUSE EVENTS | |
3472 | ||
3473 | // Return true when the given mouse event happened in a widget | |
3474 | function eventInWidget(display, e) { | |
3475 | for (var n = e_target(e); n != display.wrapper; n = n.parentNode) { | |
3476 | if (!n || (n.nodeType == 1 && n.getAttribute("cm-ignore-events") == "true") || | |
3477 | (n.parentNode == display.sizer && n != display.mover)) | |
3478 | return true; | |
3479 | } | |
3480 | } | |
3481 | ||
3482 | // Given a mouse event, find the corresponding position. If liberal | |
3483 | // is false, it checks whether a gutter or scrollbar was clicked, | |
3484 | // and returns null if it was. forRect is used by rectangular | |
3485 | // selections, and tries to estimate a character position even for | |
3486 | // coordinates beyond the right of the text. | |
3487 | function posFromMouse(cm, e, liberal, forRect) { | |
3488 | var display = cm.display; | |
3489 | if (!liberal && e_target(e).getAttribute("cm-not-content") == "true") return null; | |
3490 | ||
3491 | var x, y, space = display.lineSpace.getBoundingClientRect(); | |
3492 | // Fails unpredictably on IE[67] when mouse is dragged around quickly. | |
3493 | try { x = e.clientX - space.left; y = e.clientY - space.top; } | |
3494 | catch (e) { return null; } | |
3495 | var coords = coordsChar(cm, x, y), line; | |
3496 | if (forRect && coords.xRel == 1 && (line = getLine(cm.doc, coords.line).text).length == coords.ch) { | |
3497 | var colDiff = countColumn(line, line.length, cm.options.tabSize) - line.length; | |
3498 | coords = Pos(coords.line, Math.max(0, Math.round((x - paddingH(cm.display).left) / charWidth(cm.display)) - colDiff)); | |
3499 | } | |
3500 | return coords; | |
3501 | } | |
3502 | ||
3503 | // A mouse down can be a single click, double click, triple click, | |
3504 | // start of selection drag, start of text drag, new cursor | |
3505 | // (ctrl-click), rectangle drag (alt-drag), or xwin | |
3506 | // middle-click-paste. Or it might be a click on something we should | |
3507 | // not interfere with, such as a scrollbar or widget. | |
3508 | function onMouseDown(e) { | |
3509 | var cm = this, display = cm.display; | |
3510 | if (display.activeTouch && display.input.supportsTouch() || signalDOMEvent(cm, e)) return; | |
3511 | display.shift = e.shiftKey; | |
3512 | ||
3513 | if (eventInWidget(display, e)) { | |
3514 | if (!webkit) { | |
3515 | // Briefly turn off draggability, to allow widgets to do | |
3516 | // normal dragging things. | |
3517 | display.scroller.draggable = false; | |
3518 | setTimeout(function(){display.scroller.draggable = true;}, 100); | |
3519 | } | |
3520 | return; | |
3521 | } | |
3522 | if (clickInGutter(cm, e)) return; | |
3523 | var start = posFromMouse(cm, e); | |
3524 | window.focus(); | |
3525 | ||
3526 | switch (e_button(e)) { | |
3527 | case 1: | |
3528 | if (start) | |
3529 | leftButtonDown(cm, e, start); | |
3530 | else if (e_target(e) == display.scroller) | |
3531 | e_preventDefault(e); | |
3532 | break; | |
3533 | case 2: | |
3534 | if (webkit) cm.state.lastMiddleDown = +new Date; | |
3535 | if (start) extendSelection(cm.doc, start); | |
3536 | setTimeout(function() {display.input.focus();}, 20); | |
3537 | e_preventDefault(e); | |
3538 | break; | |
3539 | case 3: | |
3540 | if (captureRightClick) onContextMenu(cm, e); | |
3541 | else delayBlurEvent(cm); | |
3542 | break; | |
3543 | } | |
3544 | } | |
3545 | ||
3546 | var lastClick, lastDoubleClick; | |
3547 | function leftButtonDown(cm, e, start) { | |
3548 | if (ie) setTimeout(bind(ensureFocus, cm), 0); | |
3549 | else cm.curOp.focus = activeElt(); | |
3550 | ||
3551 | var now = +new Date, type; | |
3552 | if (lastDoubleClick && lastDoubleClick.time > now - 400 && cmp(lastDoubleClick.pos, start) == 0) { | |
3553 | type = "triple"; | |
3554 | } else if (lastClick && lastClick.time > now - 400 && cmp(lastClick.pos, start) == 0) { | |
3555 | type = "double"; | |
3556 | lastDoubleClick = {time: now, pos: start}; | |
3557 | } else { | |
3558 | type = "single"; | |
3559 | lastClick = {time: now, pos: start}; | |
3560 | } | |
3561 | ||
3562 | var sel = cm.doc.sel, modifier = mac ? e.metaKey : e.ctrlKey, contained; | |
3563 | if (cm.options.dragDrop && dragAndDrop && !isReadOnly(cm) && | |
3564 | type == "single" && (contained = sel.contains(start)) > -1 && | |
3565 | !sel.ranges[contained].empty()) | |
3566 | leftButtonStartDrag(cm, e, start, modifier); | |
3567 | else | |
3568 | leftButtonSelect(cm, e, start, type, modifier); | |
3569 | } | |
3570 | ||
3571 | // Start a text drag. When it ends, see if any dragging actually | |
3572 | // happen, and treat as a click if it didn't. | |
3573 | function leftButtonStartDrag(cm, e, start, modifier) { | |
3574 | var display = cm.display, startTime = +new Date; | |
3575 | var dragEnd = operation(cm, function(e2) { | |
3576 | if (webkit) display.scroller.draggable = false; | |
3577 | cm.state.draggingText = false; | |
3578 | off(document, "mouseup", dragEnd); | |
3579 | off(display.scroller, "drop", dragEnd); | |
3580 | if (Math.abs(e.clientX - e2.clientX) + Math.abs(e.clientY - e2.clientY) < 10) { | |
3581 | e_preventDefault(e2); | |
3582 | if (!modifier && +new Date - 200 < startTime) | |
3583 | extendSelection(cm.doc, start); | |
3584 | // Work around unexplainable focus problem in IE9 (#2127) and Chrome (#3081) | |
3585 | if (webkit || ie && ie_version == 9) | |
3586 | setTimeout(function() {document.body.focus(); display.input.focus();}, 20); | |
3587 | else | |
3588 | display.input.focus(); | |
3589 | } | |
3590 | }); | |
3591 | // Let the drag handler handle this. | |
3592 | if (webkit) display.scroller.draggable = true; | |
3593 | cm.state.draggingText = dragEnd; | |
3594 | // IE's approach to draggable | |
3595 | if (display.scroller.dragDrop) display.scroller.dragDrop(); | |
3596 | on(document, "mouseup", dragEnd); | |
3597 | on(display.scroller, "drop", dragEnd); | |
3598 | } | |
3599 | ||
3600 | // Normal selection, as opposed to text dragging. | |
3601 | function leftButtonSelect(cm, e, start, type, addNew) { | |
3602 | var display = cm.display, doc = cm.doc; | |
3603 | e_preventDefault(e); | |
3604 | ||
3605 | var ourRange, ourIndex, startSel = doc.sel, ranges = startSel.ranges; | |
3606 | if (addNew && !e.shiftKey) { | |
3607 | ourIndex = doc.sel.contains(start); | |
3608 | if (ourIndex > -1) | |
3609 | ourRange = ranges[ourIndex]; | |
3610 | else | |
3611 | ourRange = new Range(start, start); | |
3612 | } else { | |
3613 | ourRange = doc.sel.primary(); | |
3614 | ourIndex = doc.sel.primIndex; | |
3615 | } | |
3616 | ||
3617 | if (e.altKey) { | |
3618 | type = "rect"; | |
3619 | if (!addNew) ourRange = new Range(start, start); | |
3620 | start = posFromMouse(cm, e, true, true); | |
3621 | ourIndex = -1; | |
3622 | } else if (type == "double") { | |
3623 | var word = cm.findWordAt(start); | |
3624 | if (cm.display.shift || doc.extend) | |
3625 | ourRange = extendRange(doc, ourRange, word.anchor, word.head); | |
3626 | else | |
3627 | ourRange = word; | |
3628 | } else if (type == "triple") { | |
3629 | var line = new Range(Pos(start.line, 0), clipPos(doc, Pos(start.line + 1, 0))); | |
3630 | if (cm.display.shift || doc.extend) | |
3631 | ourRange = extendRange(doc, ourRange, line.anchor, line.head); | |
3632 | else | |
3633 | ourRange = line; | |
3634 | } else { | |
3635 | ourRange = extendRange(doc, ourRange, start); | |
3636 | } | |
3637 | ||
3638 | if (!addNew) { | |
3639 | ourIndex = 0; | |
3640 | setSelection(doc, new Selection([ourRange], 0), sel_mouse); | |
3641 | startSel = doc.sel; | |
3642 | } else if (ourIndex == -1) { | |
3643 | ourIndex = ranges.length; | |
3644 | setSelection(doc, normalizeSelection(ranges.concat([ourRange]), ourIndex), | |
3645 | {scroll: false, origin: "*mouse"}); | |
3646 | } else if (ranges.length > 1 && ranges[ourIndex].empty() && type == "single" && !e.shiftKey) { | |
3647 | setSelection(doc, normalizeSelection(ranges.slice(0, ourIndex).concat(ranges.slice(ourIndex + 1)), 0)); | |
3648 | startSel = doc.sel; | |
3649 | } else { | |
3650 | replaceOneSelection(doc, ourIndex, ourRange, sel_mouse); | |
3651 | } | |
3652 | ||
3653 | var lastPos = start; | |
3654 | function extendTo(pos) { | |
3655 | if (cmp(lastPos, pos) == 0) return; | |
3656 | lastPos = pos; | |
3657 | ||
3658 | if (type == "rect") { | |
3659 | var ranges = [], tabSize = cm.options.tabSize; | |
3660 | var startCol = countColumn(getLine(doc, start.line).text, start.ch, tabSize); | |
3661 | var posCol = countColumn(getLine(doc, pos.line).text, pos.ch, tabSize); | |
3662 | var left = Math.min(startCol, posCol), right = Math.max(startCol, posCol); | |
3663 | for (var line = Math.min(start.line, pos.line), end = Math.min(cm.lastLine(), Math.max(start.line, pos.line)); | |
3664 | line <= end; line++) { | |
3665 | var text = getLine(doc, line).text, leftPos = findColumn(text, left, tabSize); | |
3666 | if (left == right) | |
3667 | ranges.push(new Range(Pos(line, leftPos), Pos(line, leftPos))); | |
3668 | else if (text.length > leftPos) | |
3669 | ranges.push(new Range(Pos(line, leftPos), Pos(line, findColumn(text, right, tabSize)))); | |
3670 | } | |
3671 | if (!ranges.length) ranges.push(new Range(start, start)); | |
3672 | setSelection(doc, normalizeSelection(startSel.ranges.slice(0, ourIndex).concat(ranges), ourIndex), | |
3673 | {origin: "*mouse", scroll: false}); | |
3674 | cm.scrollIntoView(pos); | |
3675 | } else { | |
3676 | var oldRange = ourRange; | |
3677 | var anchor = oldRange.anchor, head = pos; | |
3678 | if (type != "single") { | |
3679 | if (type == "double") | |
3680 | var range = cm.findWordAt(pos); | |
3681 | else | |
3682 | var range = new Range(Pos(pos.line, 0), clipPos(doc, Pos(pos.line + 1, 0))); | |
3683 | if (cmp(range.anchor, anchor) > 0) { | |
3684 | head = range.head; | |
3685 | anchor = minPos(oldRange.from(), range.anchor); | |
3686 | } else { | |
3687 | head = range.anchor; | |
3688 | anchor = maxPos(oldRange.to(), range.head); | |
3689 | } | |
3690 | } | |
3691 | var ranges = startSel.ranges.slice(0); | |
3692 | ranges[ourIndex] = new Range(clipPos(doc, anchor), head); | |
3693 | setSelection(doc, normalizeSelection(ranges, ourIndex), sel_mouse); | |
3694 | } | |
3695 | } | |
3696 | ||
3697 | var editorSize = display.wrapper.getBoundingClientRect(); | |
3698 | // Used to ensure timeout re-tries don't fire when another extend | |
3699 | // happened in the meantime (clearTimeout isn't reliable -- at | |
3700 | // least on Chrome, the timeouts still happen even when cleared, | |
3701 | // if the clear happens after their scheduled firing time). | |
3702 | var counter = 0; | |
3703 | ||
3704 | function extend(e) { | |
3705 | var curCount = ++counter; | |
3706 | var cur = posFromMouse(cm, e, true, type == "rect"); | |
3707 | if (!cur) return; | |
3708 | if (cmp(cur, lastPos) != 0) { | |
3709 | cm.curOp.focus = activeElt(); | |
3710 | extendTo(cur); | |
3711 | var visible = visibleLines(display, doc); | |
3712 | if (cur.line >= visible.to || cur.line < visible.from) | |
3713 | setTimeout(operation(cm, function(){if (counter == curCount) extend(e);}), 150); | |
3714 | } else { | |
3715 | var outside = e.clientY < editorSize.top ? -20 : e.clientY > editorSize.bottom ? 20 : 0; | |
3716 | if (outside) setTimeout(operation(cm, function() { | |
3717 | if (counter != curCount) return; | |
3718 | display.scroller.scrollTop += outside; | |
3719 | extend(e); | |
3720 | }), 50); | |
3721 | } | |
3722 | } | |
3723 | ||
3724 | function done(e) { | |
3725 | counter = Infinity; | |
3726 | e_preventDefault(e); | |
3727 | display.input.focus(); | |
3728 | off(document, "mousemove", move); | |
3729 | off(document, "mouseup", up); | |
3730 | doc.history.lastSelOrigin = null; | |
3731 | } | |
3732 | ||
3733 | var move = operation(cm, function(e) { | |
3734 | if (!e_button(e)) done(e); | |
3735 | else extend(e); | |
3736 | }); | |
3737 | var up = operation(cm, done); | |
3738 | on(document, "mousemove", move); | |
3739 | on(document, "mouseup", up); | |
3740 | } | |
3741 | ||
3742 | // Determines whether an event happened in the gutter, and fires the | |
3743 | // handlers for the corresponding event. | |
3744 | function gutterEvent(cm, e, type, prevent, signalfn) { | |
3745 | try { var mX = e.clientX, mY = e.clientY; } | |
3746 | catch(e) { return false; } | |
3747 | if (mX >= Math.floor(cm.display.gutters.getBoundingClientRect().right)) return false; | |
3748 | if (prevent) e_preventDefault(e); | |
3749 | ||
3750 | var display = cm.display; | |
3751 | var lineBox = display.lineDiv.getBoundingClientRect(); | |
3752 | ||
3753 | if (mY > lineBox.bottom || !hasHandler(cm, type)) return e_defaultPrevented(e); | |
3754 | mY -= lineBox.top - display.viewOffset; | |
3755 | ||
3756 | for (var i = 0; i < cm.options.gutters.length; ++i) { | |
3757 | var g = display.gutters.childNodes[i]; | |
3758 | if (g && g.getBoundingClientRect().right >= mX) { | |
3759 | var line = lineAtHeight(cm.doc, mY); | |
3760 | var gutter = cm.options.gutters[i]; | |
3761 | signalfn(cm, type, cm, line, gutter, e); | |
3762 | return e_defaultPrevented(e); | |
3763 | } | |
3764 | } | |
3765 | } | |
3766 | ||
3767 | function clickInGutter(cm, e) { | |
3768 | return gutterEvent(cm, e, "gutterClick", true, signalLater); | |
3769 | } | |
3770 | ||
3771 | // Kludge to work around strange IE behavior where it'll sometimes | |
3772 | // re-fire a series of drag-related events right after the drop (#1551) | |
3773 | var lastDrop = 0; | |
3774 | ||
3775 | function onDrop(e) { | |
3776 | var cm = this; | |
3777 | if (signalDOMEvent(cm, e) || eventInWidget(cm.display, e)) | |
3778 | return; | |
3779 | e_preventDefault(e); | |
3780 | if (ie) lastDrop = +new Date; | |
3781 | var pos = posFromMouse(cm, e, true), files = e.dataTransfer.files; | |
3782 | if (!pos || isReadOnly(cm)) return; | |
3783 | // Might be a file drop, in which case we simply extract the text | |
3784 | // and insert it. | |
3785 | if (files && files.length && window.FileReader && window.File) { | |
3786 | var n = files.length, text = Array(n), read = 0; | |
3787 | var loadFile = function(file, i) { | |
3788 | var reader = new FileReader; | |
3789 | reader.onload = operation(cm, function() { | |
3790 | text[i] = reader.result; | |
3791 | if (++read == n) { | |
3792 | pos = clipPos(cm.doc, pos); | |
3793 | var change = {from: pos, to: pos, text: splitLines(text.join("\n")), origin: "paste"}; | |
3794 | makeChange(cm.doc, change); | |
3795 | setSelectionReplaceHistory(cm.doc, simpleSelection(pos, changeEnd(change))); | |
3796 | } | |
3797 | }); | |
3798 | reader.readAsText(file); | |
3799 | }; | |
3800 | for (var i = 0; i < n; ++i) loadFile(files[i], i); | |
3801 | } else { // Normal drop | |
3802 | // Don't do a replace if the drop happened inside of the selected text. | |
3803 | if (cm.state.draggingText && cm.doc.sel.contains(pos) > -1) { | |
3804 | cm.state.draggingText(e); | |
3805 | // Ensure the editor is re-focused | |
3806 | setTimeout(function() {cm.display.input.focus();}, 20); | |
3807 | return; | |
3808 | } | |
3809 | try { | |
3810 | var text = e.dataTransfer.getData("Text"); | |
3811 | if (text) { | |
3812 | if (cm.state.draggingText && !(mac ? e.altKey : e.ctrlKey)) | |
3813 | var selected = cm.listSelections(); | |
3814 | setSelectionNoUndo(cm.doc, simpleSelection(pos, pos)); | |
3815 | if (selected) for (var i = 0; i < selected.length; ++i) | |
3816 | replaceRange(cm.doc, "", selected[i].anchor, selected[i].head, "drag"); | |
3817 | cm.replaceSelection(text, "around", "paste"); | |
3818 | cm.display.input.focus(); | |
3819 | } | |
3820 | } | |
3821 | catch(e){} | |
3822 | } | |
3823 | } | |
3824 | ||
3825 | function onDragStart(cm, e) { | |
3826 | if (ie && (!cm.state.draggingText || +new Date - lastDrop < 100)) { e_stop(e); return; } | |
3827 | if (signalDOMEvent(cm, e) || eventInWidget(cm.display, e)) return; | |
3828 | ||
3829 | e.dataTransfer.setData("Text", cm.getSelection()); | |
3830 | ||
3831 | // Use dummy image instead of default browsers image. | |
3832 | // Recent Safari (~6.0.2) have a tendency to segfault when this happens, so we don't do it there. | |
3833 | if (e.dataTransfer.setDragImage && !safari) { | |
3834 | var img = elt("img", null, null, "position: fixed; left: 0; top: 0;"); | |
3835 | img.src = "data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw=="; | |
3836 | if (presto) { | |
3837 | img.width = img.height = 1; | |
3838 | cm.display.wrapper.appendChild(img); | |
3839 | // Force a relayout, or Opera won't use our image for some obscure reason | |
3840 | img._top = img.offsetTop; | |
3841 | } | |
3842 | e.dataTransfer.setDragImage(img, 0, 0); | |
3843 | if (presto) img.parentNode.removeChild(img); | |
3844 | } | |
3845 | } | |
3846 | ||
3847 | // SCROLL EVENTS | |
3848 | ||
3849 | // Sync the scrollable area and scrollbars, ensure the viewport | |
3850 | // covers the visible area. | |
3851 | function setScrollTop(cm, val) { | |
3852 | if (Math.abs(cm.doc.scrollTop - val) < 2) return; | |
3853 | cm.doc.scrollTop = val; | |
3854 | if (!gecko) updateDisplaySimple(cm, {top: val}); | |
3855 | if (cm.display.scroller.scrollTop != val) cm.display.scroller.scrollTop = val; | |
3856 | cm.display.scrollbars.setScrollTop(val); | |
3857 | if (gecko) updateDisplaySimple(cm); | |
3858 | startWorker(cm, 100); | |
3859 | } | |
3860 | // Sync scroller and scrollbar, ensure the gutter elements are | |
3861 | // aligned. | |
3862 | function setScrollLeft(cm, val, isScroller) { | |
3863 | if (isScroller ? val == cm.doc.scrollLeft : Math.abs(cm.doc.scrollLeft - val) < 2) return; | |
3864 | val = Math.min(val, cm.display.scroller.scrollWidth - cm.display.scroller.clientWidth); | |
3865 | cm.doc.scrollLeft = val; | |
3866 | alignHorizontally(cm); | |
3867 | if (cm.display.scroller.scrollLeft != val) cm.display.scroller.scrollLeft = val; | |
3868 | cm.display.scrollbars.setScrollLeft(val); | |
3869 | } | |
3870 | ||
3871 | // Since the delta values reported on mouse wheel events are | |
3872 | // unstandardized between browsers and even browser versions, and | |
3873 | // generally horribly unpredictable, this code starts by measuring | |
3874 | // the scroll effect that the first few mouse wheel events have, | |
3875 | // and, from that, detects the way it can convert deltas to pixel | |
3876 | // offsets afterwards. | |
3877 | // | |
3878 | // The reason we want to know the amount a wheel event will scroll | |
3879 | // is that it gives us a chance to update the display before the | |
3880 | // actual scrolling happens, reducing flickering. | |
3881 | ||
3882 | var wheelSamples = 0, wheelPixelsPerUnit = null; | |
3883 | // Fill in a browser-detected starting value on browsers where we | |
3884 | // know one. These don't have to be accurate -- the result of them | |
3885 | // being wrong would just be a slight flicker on the first wheel | |
3886 | // scroll (if it is large enough). | |
3887 | if (ie) wheelPixelsPerUnit = -.53; | |
3888 | else if (gecko) wheelPixelsPerUnit = 15; | |
3889 | else if (chrome) wheelPixelsPerUnit = -.7; | |
3890 | else if (safari) wheelPixelsPerUnit = -1/3; | |
3891 | ||
3892 | var wheelEventDelta = function(e) { | |
3893 | var dx = e.wheelDeltaX, dy = e.wheelDeltaY; | |
3894 | if (dx == null && e.detail && e.axis == e.HORIZONTAL_AXIS) dx = e.detail; | |
3895 | if (dy == null && e.detail && e.axis == e.VERTICAL_AXIS) dy = e.detail; | |
3896 | else if (dy == null) dy = e.wheelDelta; | |
3897 | return {x: dx, y: dy}; | |
3898 | }; | |
3899 | CodeMirror.wheelEventPixels = function(e) { | |
3900 | var delta = wheelEventDelta(e); | |
3901 | delta.x *= wheelPixelsPerUnit; | |
3902 | delta.y *= wheelPixelsPerUnit; | |
3903 | return delta; | |
3904 | }; | |
3905 | ||
3906 | function onScrollWheel(cm, e) { | |
3907 | var delta = wheelEventDelta(e), dx = delta.x, dy = delta.y; | |
3908 | ||
3909 | var display = cm.display, scroll = display.scroller; | |
3910 | // Quit if there's nothing to scroll here | |
3911 | if (!(dx && scroll.scrollWidth > scroll.clientWidth || | |
3912 | dy && scroll.scrollHeight > scroll.clientHeight)) return; | |
3913 | ||
3914 | // Webkit browsers on OS X abort momentum scrolls when the target | |
3915 | // of the scroll event is removed from the scrollable element. | |
3916 | // This hack (see related code in patchDisplay) makes sure the | |
3917 | // element is kept around. | |
3918 | if (dy && mac && webkit) { | |
3919 | outer: for (var cur = e.target, view = display.view; cur != scroll; cur = cur.parentNode) { | |
3920 | for (var i = 0; i < view.length; i++) { | |
3921 | if (view[i].node == cur) { | |
3922 | cm.display.currentWheelTarget = cur; | |
3923 | break outer; | |
3924 | } | |
3925 | } | |
3926 | } | |
3927 | } | |
3928 | ||
3929 | // On some browsers, horizontal scrolling will cause redraws to | |
3930 | // happen before the gutter has been realigned, causing it to | |
3931 | // wriggle around in a most unseemly way. When we have an | |
3932 | // estimated pixels/delta value, we just handle horizontal | |
3933 | // scrolling entirely here. It'll be slightly off from native, but | |
3934 | // better than glitching out. | |
3935 | if (dx && !gecko && !presto && wheelPixelsPerUnit != null) { | |
3936 | if (dy) | |
3937 | setScrollTop(cm, Math.max(0, Math.min(scroll.scrollTop + dy * wheelPixelsPerUnit, scroll.scrollHeight - scroll.clientHeight))); | |
3938 | setScrollLeft(cm, Math.max(0, Math.min(scroll.scrollLeft + dx * wheelPixelsPerUnit, scroll.scrollWidth - scroll.clientWidth))); | |
3939 | e_preventDefault(e); | |
3940 | display.wheelStartX = null; // Abort measurement, if in progress | |
3941 | return; | |
3942 | } | |
3943 | ||
3944 | // 'Project' the visible viewport to cover the area that is being | |
3945 | // scrolled into view (if we know enough to estimate it). | |
3946 | if (dy && wheelPixelsPerUnit != null) { | |
3947 | var pixels = dy * wheelPixelsPerUnit; | |
3948 | var top = cm.doc.scrollTop, bot = top + display.wrapper.clientHeight; | |
3949 | if (pixels < 0) top = Math.max(0, top + pixels - 50); | |
3950 | else bot = Math.min(cm.doc.height, bot + pixels + 50); | |
3951 | updateDisplaySimple(cm, {top: top, bottom: bot}); | |
3952 | } | |
3953 | ||
3954 | if (wheelSamples < 20) { | |
3955 | if (display.wheelStartX == null) { | |
3956 | display.wheelStartX = scroll.scrollLeft; display.wheelStartY = scroll.scrollTop; | |
3957 | display.wheelDX = dx; display.wheelDY = dy; | |
3958 | setTimeout(function() { | |
3959 | if (display.wheelStartX == null) return; | |
3960 | var movedX = scroll.scrollLeft - display.wheelStartX; | |
3961 | var movedY = scroll.scrollTop - display.wheelStartY; | |
3962 | var sample = (movedY && display.wheelDY && movedY / display.wheelDY) || | |
3963 | (movedX && display.wheelDX && movedX / display.wheelDX); | |
3964 | display.wheelStartX = display.wheelStartY = null; | |
3965 | if (!sample) return; | |
3966 | wheelPixelsPerUnit = (wheelPixelsPerUnit * wheelSamples + sample) / (wheelSamples + 1); | |
3967 | ++wheelSamples; | |
3968 | }, 200); | |
3969 | } else { | |
3970 | display.wheelDX += dx; display.wheelDY += dy; | |
3971 | } | |
3972 | } | |
3973 | } | |
3974 | ||
3975 | // KEY EVENTS | |
3976 | ||
3977 | // Run a handler that was bound to a key. | |
3978 | function doHandleBinding(cm, bound, dropShift) { | |
3979 | if (typeof bound == "string") { | |
3980 | bound = commands[bound]; | |
3981 | if (!bound) return false; | |
3982 | } | |
3983 | // Ensure previous input has been read, so that the handler sees a | |
3984 | // consistent view of the document | |
3985 | cm.display.input.ensurePolled(); | |
3986 | var prevShift = cm.display.shift, done = false; | |
3987 | try { | |
3988 | if (isReadOnly(cm)) cm.state.suppressEdits = true; | |
3989 | if (dropShift) cm.display.shift = false; | |
3990 | done = bound(cm) != Pass; | |
3991 | } finally { | |
3992 | cm.display.shift = prevShift; | |
3993 | cm.state.suppressEdits = false; | |
3994 | } | |
3995 | return done; | |
3996 | } | |
3997 | ||
3998 | function lookupKeyForEditor(cm, name, handle) { | |
3999 | for (var i = 0; i < cm.state.keyMaps.length; i++) { | |
4000 | var result = lookupKey(name, cm.state.keyMaps[i], handle, cm); | |
4001 | if (result) return result; | |
4002 | } | |
4003 | return (cm.options.extraKeys && lookupKey(name, cm.options.extraKeys, handle, cm)) | |
4004 | || lookupKey(name, cm.options.keyMap, handle, cm); | |
4005 | } | |
4006 | ||
4007 | var stopSeq = new Delayed; | |
4008 | function dispatchKey(cm, name, e, handle) { | |
4009 | var seq = cm.state.keySeq; | |
4010 | if (seq) { | |
4011 | if (isModifierKey(name)) return "handled"; | |
4012 | stopSeq.set(50, function() { | |
4013 | if (cm.state.keySeq == seq) { | |
4014 | cm.state.keySeq = null; | |
4015 | cm.display.input.reset(); | |
4016 | } | |
4017 | }); | |
4018 | name = seq + " " + name; | |
4019 | } | |
4020 | var result = lookupKeyForEditor(cm, name, handle); | |
4021 | ||
4022 | if (result == "multi") | |
4023 | cm.state.keySeq = name; | |
4024 | if (result == "handled") | |
4025 | signalLater(cm, "keyHandled", cm, name, e); | |
4026 | ||
4027 | if (result == "handled" || result == "multi") { | |
4028 | e_preventDefault(e); | |
4029 | restartBlink(cm); | |
4030 | } | |
4031 | ||
4032 | if (seq && !result && /\'$/.test(name)) { | |
4033 | e_preventDefault(e); | |
4034 | return true; | |
4035 | } | |
4036 | return !!result; | |
4037 | } | |
4038 | ||
4039 | // Handle a key from the keydown event. | |
4040 | function handleKeyBinding(cm, e) { | |
4041 | var name = keyName(e, true); | |
4042 | if (!name) return false; | |
4043 | ||
4044 | if (e.shiftKey && !cm.state.keySeq) { | |
4045 | // First try to resolve full name (including 'Shift-'). Failing | |
4046 | // that, see if there is a cursor-motion command (starting with | |
4047 | // 'go') bound to the keyname without 'Shift-'. | |
4048 | return dispatchKey(cm, "Shift-" + name, e, function(b) {return doHandleBinding(cm, b, true);}) | |
4049 | || dispatchKey(cm, name, e, function(b) { | |
4050 | if (typeof b == "string" ? /^go[A-Z]/.test(b) : b.motion) | |
4051 | return doHandleBinding(cm, b); | |
4052 | }); | |
4053 | } else { | |
4054 | return dispatchKey(cm, name, e, function(b) { return doHandleBinding(cm, b); }); | |
4055 | } | |
4056 | } | |
4057 | ||
4058 | // Handle a key from the keypress event | |
4059 | function handleCharBinding(cm, e, ch) { | |
4060 | return dispatchKey(cm, "'" + ch + "'", e, | |
4061 | function(b) { return doHandleBinding(cm, b, true); }); | |
4062 | } | |
4063 | ||
4064 | var lastStoppedKey = null; | |
4065 | function onKeyDown(e) { | |
4066 | var cm = this; | |
4067 | cm.curOp.focus = activeElt(); | |
4068 | if (signalDOMEvent(cm, e)) return; | |
4069 | // IE does strange things with escape. | |
4070 | if (ie && ie_version < 11 && e.keyCode == 27) e.returnValue = false; | |
4071 | var code = e.keyCode; | |
4072 | cm.display.shift = code == 16 || e.shiftKey; | |
4073 | var handled = handleKeyBinding(cm, e); | |
4074 | if (presto) { | |
4075 | lastStoppedKey = handled ? code : null; | |
4076 | // Opera has no cut event... we try to at least catch the key combo | |
4077 | if (!handled && code == 88 && !hasCopyEvent && (mac ? e.metaKey : e.ctrlKey)) | |
4078 | cm.replaceSelection("", null, "cut"); | |
4079 | } | |
4080 | ||
4081 | // Turn mouse into crosshair when Alt is held on Mac. | |
4082 | if (code == 18 && !/\bCodeMirror-crosshair\b/.test(cm.display.lineDiv.className)) | |
4083 | showCrossHair(cm); | |
4084 | } | |
4085 | ||
4086 | function showCrossHair(cm) { | |
4087 | var lineDiv = cm.display.lineDiv; | |
4088 | addClass(lineDiv, "CodeMirror-crosshair"); | |
4089 | ||
4090 | function up(e) { | |
4091 | if (e.keyCode == 18 || !e.altKey) { | |
4092 | rmClass(lineDiv, "CodeMirror-crosshair"); | |
4093 | off(document, "keyup", up); | |
4094 | off(document, "mouseover", up); | |
4095 | } | |
4096 | } | |
4097 | on(document, "keyup", up); | |
4098 | on(document, "mouseover", up); | |
4099 | } | |
4100 | ||
4101 | function onKeyUp(e) { | |
4102 | if (e.keyCode == 16) this.doc.sel.shift = false; | |
4103 | signalDOMEvent(this, e); | |
4104 | } | |
4105 | ||
4106 | function onKeyPress(e) { | |
4107 | var cm = this; | |
4108 | if (eventInWidget(cm.display, e) || signalDOMEvent(cm, e) || e.ctrlKey && !e.altKey || mac && e.metaKey) return; | |
4109 | var keyCode = e.keyCode, charCode = e.charCode; | |
4110 | if (presto && keyCode == lastStoppedKey) {lastStoppedKey = null; e_preventDefault(e); return;} | |
4111 | if ((presto && (!e.which || e.which < 10)) && handleKeyBinding(cm, e)) return; | |
4112 | var ch = String.fromCharCode(charCode == null ? keyCode : charCode); | |
4113 | if (handleCharBinding(cm, e, ch)) return; | |
4114 | cm.display.input.onKeyPress(e); | |
4115 | } | |
4116 | ||
4117 | // FOCUS/BLUR EVENTS | |
4118 | ||
4119 | function delayBlurEvent(cm) { | |
4120 | cm.state.delayingBlurEvent = true; | |
4121 | setTimeout(function() { | |
4122 | if (cm.state.delayingBlurEvent) { | |
4123 | cm.state.delayingBlurEvent = false; | |
4124 | onBlur(cm); | |
4125 | } | |
4126 | }, 100); | |
4127 | } | |
4128 | ||
4129 | function onFocus(cm) { | |
4130 | if (cm.state.delayingBlurEvent) cm.state.delayingBlurEvent = false; | |
4131 | ||
4132 | if (cm.options.readOnly == "nocursor") return; | |
4133 | if (!cm.state.focused) { | |
4134 | signal(cm, "focus", cm); | |
4135 | cm.state.focused = true; | |
4136 | addClass(cm.display.wrapper, "CodeMirror-focused"); | |
4137 | // This test prevents this from firing when a context | |
4138 | // menu is closed (since the input reset would kill the | |
4139 | // select-all detection hack) | |
4140 | if (!cm.curOp && cm.display.selForContextMenu != cm.doc.sel) { | |
4141 | cm.display.input.reset(); | |
4142 | if (webkit) setTimeout(function() { cm.display.input.reset(true); }, 20); // Issue #1730 | |
4143 | } | |
4144 | cm.display.input.receivedFocus(); | |
4145 | } | |
4146 | restartBlink(cm); | |
4147 | } | |
4148 | function onBlur(cm) { | |
4149 | if (cm.state.delayingBlurEvent) return; | |
4150 | ||
4151 | if (cm.state.focused) { | |
4152 | signal(cm, "blur", cm); | |
4153 | cm.state.focused = false; | |
4154 | rmClass(cm.display.wrapper, "CodeMirror-focused"); | |
4155 | } | |
4156 | clearInterval(cm.display.blinker); | |
4157 | setTimeout(function() {if (!cm.state.focused) cm.display.shift = false;}, 150); | |
4158 | } | |
4159 | ||
4160 | // CONTEXT MENU HANDLING | |
4161 | ||
4162 | // To make the context menu work, we need to briefly unhide the | |
4163 | // textarea (making it as unobtrusive as possible) to let the | |
4164 | // right-click take effect on it. | |
4165 | function onContextMenu(cm, e) { | |
4166 | if (eventInWidget(cm.display, e) || contextMenuInGutter(cm, e)) return; | |
4167 | cm.display.input.onContextMenu(e); | |
4168 | } | |
4169 | ||
4170 | function contextMenuInGutter(cm, e) { | |
4171 | if (!hasHandler(cm, "gutterContextMenu")) return false; | |
4172 | return gutterEvent(cm, e, "gutterContextMenu", false, signal); | |
4173 | } | |
4174 | ||
4175 | // UPDATING | |
4176 | ||
4177 | // Compute the position of the end of a change (its 'to' property | |
4178 | // refers to the pre-change end). | |
4179 | var changeEnd = CodeMirror.changeEnd = function(change) { | |
4180 | if (!change.text) return change.to; | |
4181 | return Pos(change.from.line + change.text.length - 1, | |
4182 | lst(change.text).length + (change.text.length == 1 ? change.from.ch : 0)); | |
4183 | }; | |
4184 | ||
4185 | // Adjust a position to refer to the post-change position of the | |
4186 | // same text, or the end of the change if the change covers it. | |
4187 | function adjustForChange(pos, change) { | |
4188 | if (cmp(pos, change.from) < 0) return pos; | |
4189 | if (cmp(pos, change.to) <= 0) return changeEnd(change); | |
4190 | ||
4191 | var line = pos.line + change.text.length - (change.to.line - change.from.line) - 1, ch = pos.ch; | |
4192 | if (pos.line == change.to.line) ch += changeEnd(change).ch - change.to.ch; | |
4193 | return Pos(line, ch); | |
4194 | } | |
4195 | ||
4196 | function computeSelAfterChange(doc, change) { | |
4197 | var out = []; | |
4198 | for (var i = 0; i < doc.sel.ranges.length; i++) { | |
4199 | var range = doc.sel.ranges[i]; | |
4200 | out.push(new Range(adjustForChange(range.anchor, change), | |
4201 | adjustForChange(range.head, change))); | |
4202 | } | |
4203 | return normalizeSelection(out, doc.sel.primIndex); | |
4204 | } | |
4205 | ||
4206 | function offsetPos(pos, old, nw) { | |
4207 | if (pos.line == old.line) | |
4208 | return Pos(nw.line, pos.ch - old.ch + nw.ch); | |
4209 | else | |
4210 | return Pos(nw.line + (pos.line - old.line), pos.ch); | |
4211 | } | |
4212 | ||
4213 | // Used by replaceSelections to allow moving the selection to the | |
4214 | // start or around the replaced test. Hint may be "start" or "around". | |
4215 | function computeReplacedSel(doc, changes, hint) { | |
4216 | var out = []; | |
4217 | var oldPrev = Pos(doc.first, 0), newPrev = oldPrev; | |
4218 | for (var i = 0; i < changes.length; i++) { | |
4219 | var change = changes[i]; | |
4220 | var from = offsetPos(change.from, oldPrev, newPrev); | |
4221 | var to = offsetPos(changeEnd(change), oldPrev, newPrev); | |
4222 | oldPrev = change.to; | |
4223 | newPrev = to; | |
4224 | if (hint == "around") { | |
4225 | var range = doc.sel.ranges[i], inv = cmp(range.head, range.anchor) < 0; | |
4226 | out[i] = new Range(inv ? to : from, inv ? from : to); | |
4227 | } else { | |
4228 | out[i] = new Range(from, from); | |
4229 | } | |
4230 | } | |
4231 | return new Selection(out, doc.sel.primIndex); | |
4232 | } | |
4233 | ||
4234 | // Allow "beforeChange" event handlers to influence a change | |
4235 | function filterChange(doc, change, update) { | |
4236 | var obj = { | |
4237 | canceled: false, | |
4238 | from: change.from, | |
4239 | to: change.to, | |
4240 | text: change.text, | |
4241 | origin: change.origin, | |
4242 | cancel: function() { this.canceled = true; } | |
4243 | }; | |
4244 | if (update) obj.update = function(from, to, text, origin) { | |
4245 | if (from) this.from = clipPos(doc, from); | |
4246 | if (to) this.to = clipPos(doc, to); | |
4247 | if (text) this.text = text; | |
4248 | if (origin !== undefined) this.origin = origin; | |
4249 | }; | |
4250 | signal(doc, "beforeChange", doc, obj); | |
4251 | if (doc.cm) signal(doc.cm, "beforeChange", doc.cm, obj); | |
4252 | ||
4253 | if (obj.canceled) return null; | |
4254 | return {from: obj.from, to: obj.to, text: obj.text, origin: obj.origin}; | |
4255 | } | |
4256 | ||
4257 | // Apply a change to a document, and add it to the document's | |
4258 | // history, and propagating it to all linked documents. | |
4259 | function makeChange(doc, change, ignoreReadOnly) { | |
4260 | if (doc.cm) { | |
4261 | if (!doc.cm.curOp) return operation(doc.cm, makeChange)(doc, change, ignoreReadOnly); | |
4262 | if (doc.cm.state.suppressEdits) return; | |
4263 | } | |
4264 | ||
4265 | if (hasHandler(doc, "beforeChange") || doc.cm && hasHandler(doc.cm, "beforeChange")) { | |
4266 | change = filterChange(doc, change, true); | |
4267 | if (!change) return; | |
4268 | } | |
4269 | ||
4270 | // Possibly split or suppress the update based on the presence | |
4271 | // of read-only spans in its range. | |
4272 | var split = sawReadOnlySpans && !ignoreReadOnly && removeReadOnlyRanges(doc, change.from, change.to); | |
4273 | if (split) { | |
4274 | for (var i = split.length - 1; i >= 0; --i) | |
4275 | makeChangeInner(doc, {from: split[i].from, to: split[i].to, text: i ? [""] : change.text}); | |
4276 | } else { | |
4277 | makeChangeInner(doc, change); | |
4278 | } | |
4279 | } | |
4280 | ||
4281 | function makeChangeInner(doc, change) { | |
4282 | if (change.text.length == 1 && change.text[0] == "" && cmp(change.from, change.to) == 0) return; | |
4283 | var selAfter = computeSelAfterChange(doc, change); | |
4284 | addChangeToHistory(doc, change, selAfter, doc.cm ? doc.cm.curOp.id : NaN); | |
4285 | ||
4286 | makeChangeSingleDoc(doc, change, selAfter, stretchSpansOverChange(doc, change)); | |
4287 | var rebased = []; | |
4288 | ||
4289 | linkedDocs(doc, function(doc, sharedHist) { | |
4290 | if (!sharedHist && indexOf(rebased, doc.history) == -1) { | |
4291 | rebaseHist(doc.history, change); | |
4292 | rebased.push(doc.history); | |
4293 | } | |
4294 | makeChangeSingleDoc(doc, change, null, stretchSpansOverChange(doc, change)); | |
4295 | }); | |
4296 | } | |
4297 | ||
4298 | // Revert a change stored in a document's history. | |
4299 | function makeChangeFromHistory(doc, type, allowSelectionOnly) { | |
4300 | if (doc.cm && doc.cm.state.suppressEdits) return; | |
4301 | ||
4302 | var hist = doc.history, event, selAfter = doc.sel; | |
4303 | var source = type == "undo" ? hist.done : hist.undone, dest = type == "undo" ? hist.undone : hist.done; | |
4304 | ||
4305 | // Verify that there is a useable event (so that ctrl-z won't | |
4306 | // needlessly clear selection events) | |
4307 | for (var i = 0; i < source.length; i++) { | |
4308 | event = source[i]; | |
4309 | if (allowSelectionOnly ? event.ranges && !event.equals(doc.sel) : !event.ranges) | |
4310 | break; | |
4311 | } | |
4312 | if (i == source.length) return; | |
4313 | hist.lastOrigin = hist.lastSelOrigin = null; | |
4314 | ||
4315 | for (;;) { | |
4316 | event = source.pop(); | |
4317 | if (event.ranges) { | |
4318 | pushSelectionToHistory(event, dest); | |
4319 | if (allowSelectionOnly && !event.equals(doc.sel)) { | |
4320 | setSelection(doc, event, {clearRedo: false}); | |
4321 | return; | |
4322 | } | |
4323 | selAfter = event; | |
4324 | } | |
4325 | else break; | |
4326 | } | |
4327 | ||
4328 | // Build up a reverse change object to add to the opposite history | |
4329 | // stack (redo when undoing, and vice versa). | |
4330 | var antiChanges = []; | |
4331 | pushSelectionToHistory(selAfter, dest); | |
4332 | dest.push({changes: antiChanges, generation: hist.generation}); | |
4333 | hist.generation = event.generation || ++hist.maxGeneration; | |
4334 | ||
4335 | var filter = hasHandler(doc, "beforeChange") || doc.cm && hasHandler(doc.cm, "beforeChange"); | |
4336 | ||
4337 | for (var i = event.changes.length - 1; i >= 0; --i) { | |
4338 | var change = event.changes[i]; | |
4339 | change.origin = type; | |
4340 | if (filter && !filterChange(doc, change, false)) { | |
4341 | source.length = 0; | |
4342 | return; | |
4343 | } | |
4344 | ||
4345 | antiChanges.push(historyChangeFromChange(doc, change)); | |
4346 | ||
4347 | var after = i ? computeSelAfterChange(doc, change) : lst(source); | |
4348 | makeChangeSingleDoc(doc, change, after, mergeOldSpans(doc, change)); | |
4349 | if (!i && doc.cm) doc.cm.scrollIntoView({from: change.from, to: changeEnd(change)}); | |
4350 | var rebased = []; | |
4351 | ||
4352 | // Propagate to the linked documents | |
4353 | linkedDocs(doc, function(doc, sharedHist) { | |
4354 | if (!sharedHist && indexOf(rebased, doc.history) == -1) { | |
4355 | rebaseHist(doc.history, change); | |
4356 | rebased.push(doc.history); | |
4357 | } | |
4358 | makeChangeSingleDoc(doc, change, null, mergeOldSpans(doc, change)); | |
4359 | }); | |
4360 | } | |
4361 | } | |
4362 | ||
4363 | // Sub-views need their line numbers shifted when text is added | |
4364 | // above or below them in the parent document. | |
4365 | function shiftDoc(doc, distance) { | |
4366 | if (distance == 0) return; | |
4367 | doc.first += distance; | |
4368 | doc.sel = new Selection(map(doc.sel.ranges, function(range) { | |
4369 | return new Range(Pos(range.anchor.line + distance, range.anchor.ch), | |
4370 | Pos(range.head.line + distance, range.head.ch)); | |
4371 | }), doc.sel.primIndex); | |
4372 | if (doc.cm) { | |
4373 | regChange(doc.cm, doc.first, doc.first - distance, distance); | |
4374 | for (var d = doc.cm.display, l = d.viewFrom; l < d.viewTo; l++) | |
4375 | regLineChange(doc.cm, l, "gutter"); | |
4376 | } | |
4377 | } | |
4378 | ||
4379 | // More lower-level change function, handling only a single document | |
4380 | // (not linked ones). | |
4381 | function makeChangeSingleDoc(doc, change, selAfter, spans) { | |
4382 | if (doc.cm && !doc.cm.curOp) | |
4383 | return operation(doc.cm, makeChangeSingleDoc)(doc, change, selAfter, spans); | |
4384 | ||
4385 | if (change.to.line < doc.first) { | |
4386 | shiftDoc(doc, change.text.length - 1 - (change.to.line - change.from.line)); | |
4387 | return; | |
4388 | } | |
4389 | if (change.from.line > doc.lastLine()) return; | |
4390 | ||
4391 | // Clip the change to the size of this doc | |
4392 | if (change.from.line < doc.first) { | |
4393 | var shift = change.text.length - 1 - (doc.first - change.from.line); | |
4394 | shiftDoc(doc, shift); | |
4395 | change = {from: Pos(doc.first, 0), to: Pos(change.to.line + shift, change.to.ch), | |
4396 | text: [lst(change.text)], origin: change.origin}; | |
4397 | } | |
4398 | var last = doc.lastLine(); | |
4399 | if (change.to.line > last) { | |
4400 | change = {from: change.from, to: Pos(last, getLine(doc, last).text.length), | |
4401 | text: [change.text[0]], origin: change.origin}; | |
4402 | } | |
4403 | ||
4404 | change.removed = getBetween(doc, change.from, change.to); | |
4405 | ||
4406 | if (!selAfter) selAfter = computeSelAfterChange(doc, change); | |
4407 | if (doc.cm) makeChangeSingleDocInEditor(doc.cm, change, spans); | |
4408 | else updateDoc(doc, change, spans); | |
4409 | setSelectionNoUndo(doc, selAfter, sel_dontScroll); | |
4410 | } | |
4411 | ||
4412 | // Handle the interaction of a change to a document with the editor | |
4413 | // that this document is part of. | |
4414 | function makeChangeSingleDocInEditor(cm, change, spans) { | |
4415 | var doc = cm.doc, display = cm.display, from = change.from, to = change.to; | |
4416 | ||
4417 | var recomputeMaxLength = false, checkWidthStart = from.line; | |
4418 | if (!cm.options.lineWrapping) { | |
4419 | checkWidthStart = lineNo(visualLine(getLine(doc, from.line))); | |
4420 | doc.iter(checkWidthStart, to.line + 1, function(line) { | |
4421 | if (line == display.maxLine) { | |
4422 | recomputeMaxLength = true; | |
4423 | return true; | |
4424 | } | |
4425 | }); | |
4426 | } | |
4427 | ||
4428 | if (doc.sel.contains(change.from, change.to) > -1) | |
4429 | signalCursorActivity(cm); | |
4430 | ||
4431 | updateDoc(doc, change, spans, estimateHeight(cm)); | |
4432 | ||
4433 | if (!cm.options.lineWrapping) { | |
4434 | doc.iter(checkWidthStart, from.line + change.text.length, function(line) { | |
4435 | var len = lineLength(line); | |
4436 | if (len > display.maxLineLength) { | |
4437 | display.maxLine = line; | |
4438 | display.maxLineLength = len; | |
4439 | display.maxLineChanged = true; | |
4440 | recomputeMaxLength = false; | |
4441 | } | |
4442 | }); | |
4443 | if (recomputeMaxLength) cm.curOp.updateMaxLine = true; | |
4444 | } | |
4445 | ||
4446 | // Adjust frontier, schedule worker | |
4447 | doc.frontier = Math.min(doc.frontier, from.line); | |
4448 | startWorker(cm, 400); | |
4449 | ||
4450 | var lendiff = change.text.length - (to.line - from.line) - 1; | |
4451 | // Remember that these lines changed, for updating the display | |
4452 | if (change.full) | |
4453 | regChange(cm); | |
4454 | else if (from.line == to.line && change.text.length == 1 && !isWholeLineUpdate(cm.doc, change)) | |
4455 | regLineChange(cm, from.line, "text"); | |
4456 | else | |
4457 | regChange(cm, from.line, to.line + 1, lendiff); | |
4458 | ||
4459 | var changesHandler = hasHandler(cm, "changes"), changeHandler = hasHandler(cm, "change"); | |
4460 | if (changeHandler || changesHandler) { | |
4461 | var obj = { | |
4462 | from: from, to: to, | |
4463 | text: change.text, | |
4464 | removed: change.removed, | |
4465 | origin: change.origin | |
4466 | }; | |
4467 | if (changeHandler) signalLater(cm, "change", cm, obj); | |
4468 | if (changesHandler) (cm.curOp.changeObjs || (cm.curOp.changeObjs = [])).push(obj); | |
4469 | } | |
4470 | cm.display.selForContextMenu = null; | |
4471 | } | |
4472 | ||
4473 | function replaceRange(doc, code, from, to, origin) { | |
4474 | if (!to) to = from; | |
4475 | if (cmp(to, from) < 0) { var tmp = to; to = from; from = tmp; } | |
4476 | if (typeof code == "string") code = splitLines(code); | |
4477 | makeChange(doc, {from: from, to: to, text: code, origin: origin}); | |
4478 | } | |
4479 | ||
4480 | // SCROLLING THINGS INTO VIEW | |
4481 | ||
4482 | // If an editor sits on the top or bottom of the window, partially | |
4483 | // scrolled out of view, this ensures that the cursor is visible. | |
4484 | function maybeScrollWindow(cm, coords) { | |
4485 | if (signalDOMEvent(cm, "scrollCursorIntoView")) return; | |
4486 | ||
4487 | var display = cm.display, box = display.sizer.getBoundingClientRect(), doScroll = null; | |
4488 | if (coords.top + box.top < 0) doScroll = true; | |
4489 | else if (coords.bottom + box.top > (window.innerHeight || document.documentElement.clientHeight)) doScroll = false; | |
4490 | if (doScroll != null && !phantom) { | |
4491 | var scrollNode = elt("div", "\u200b", null, "position: absolute; top: " + | |
4492 | (coords.top - display.viewOffset - paddingTop(cm.display)) + "px; height: " + | |
4493 | (coords.bottom - coords.top + scrollGap(cm) + display.barHeight) + "px; left: " + | |
4494 | coords.left + "px; width: 2px;"); | |
4495 | cm.display.lineSpace.appendChild(scrollNode); | |
4496 | scrollNode.scrollIntoView(doScroll); | |
4497 | cm.display.lineSpace.removeChild(scrollNode); | |
4498 | } | |
4499 | } | |
4500 | ||
4501 | // Scroll a given position into view (immediately), verifying that | |
4502 | // it actually became visible (as line heights are accurately | |
4503 | // measured, the position of something may 'drift' during drawing). | |
4504 | function scrollPosIntoView(cm, pos, end, margin) { | |
4505 | if (margin == null) margin = 0; | |
4506 | for (var limit = 0; limit < 5; limit++) { | |
4507 | var changed = false, coords = cursorCoords(cm, pos); | |
4508 | var endCoords = !end || end == pos ? coords : cursorCoords(cm, end); | |
4509 | var scrollPos = calculateScrollPos(cm, Math.min(coords.left, endCoords.left), | |
4510 | Math.min(coords.top, endCoords.top) - margin, | |
4511 | Math.max(coords.left, endCoords.left), | |
4512 | Math.max(coords.bottom, endCoords.bottom) + margin); | |
4513 | var startTop = cm.doc.scrollTop, startLeft = cm.doc.scrollLeft; | |
4514 | if (scrollPos.scrollTop != null) { | |
4515 | setScrollTop(cm, scrollPos.scrollTop); | |
4516 | if (Math.abs(cm.doc.scrollTop - startTop) > 1) changed = true; | |
4517 | } | |
4518 | if (scrollPos.scrollLeft != null) { | |
4519 | setScrollLeft(cm, scrollPos.scrollLeft); | |
4520 | if (Math.abs(cm.doc.scrollLeft - startLeft) > 1) changed = true; | |
4521 | } | |
4522 | if (!changed) break; | |
4523 | } | |
4524 | return coords; | |
4525 | } | |
4526 | ||
4527 | // Scroll a given set of coordinates into view (immediately). | |
4528 | function scrollIntoView(cm, x1, y1, x2, y2) { | |
4529 | var scrollPos = calculateScrollPos(cm, x1, y1, x2, y2); | |
4530 | if (scrollPos.scrollTop != null) setScrollTop(cm, scrollPos.scrollTop); | |
4531 | if (scrollPos.scrollLeft != null) setScrollLeft(cm, scrollPos.scrollLeft); | |
4532 | } | |
4533 | ||
4534 | // Calculate a new scroll position needed to scroll the given | |
4535 | // rectangle into view. Returns an object with scrollTop and | |
4536 | // scrollLeft properties. When these are undefined, the | |
4537 | // vertical/horizontal position does not need to be adjusted. | |
4538 | function calculateScrollPos(cm, x1, y1, x2, y2) { | |
4539 | var display = cm.display, snapMargin = textHeight(cm.display); | |
4540 | if (y1 < 0) y1 = 0; | |
4541 | var screentop = cm.curOp && cm.curOp.scrollTop != null ? cm.curOp.scrollTop : display.scroller.scrollTop; | |
4542 | var screen = displayHeight(cm), result = {}; | |
4543 | if (y2 - y1 > screen) y2 = y1 + screen; | |
4544 | var docBottom = cm.doc.height + paddingVert(display); | |
4545 | var atTop = y1 < snapMargin, atBottom = y2 > docBottom - snapMargin; | |
4546 | if (y1 < screentop) { | |
4547 | result.scrollTop = atTop ? 0 : y1; | |
4548 | } else if (y2 > screentop + screen) { | |
4549 | var newTop = Math.min(y1, (atBottom ? docBottom : y2) - screen); | |
4550 | if (newTop != screentop) result.scrollTop = newTop; | |
4551 | } | |
4552 | ||
4553 | var screenleft = cm.curOp && cm.curOp.scrollLeft != null ? cm.curOp.scrollLeft : display.scroller.scrollLeft; | |
4554 | var screenw = displayWidth(cm) - (cm.options.fixedGutter ? display.gutters.offsetWidth : 0); | |
4555 | var tooWide = x2 - x1 > screenw; | |
4556 | if (tooWide) x2 = x1 + screenw; | |
4557 | if (x1 < 10) | |
4558 | result.scrollLeft = 0; | |
4559 | else if (x1 < screenleft) | |
4560 | result.scrollLeft = Math.max(0, x1 - (tooWide ? 0 : 10)); | |
4561 | else if (x2 > screenw + screenleft - 3) | |
4562 | result.scrollLeft = x2 + (tooWide ? 0 : 10) - screenw; | |
4563 | return result; | |
4564 | } | |
4565 | ||
4566 | // Store a relative adjustment to the scroll position in the current | |
4567 | // operation (to be applied when the operation finishes). | |
4568 | function addToScrollPos(cm, left, top) { | |
4569 | if (left != null || top != null) resolveScrollToPos(cm); | |
4570 | if (left != null) | |
4571 | cm.curOp.scrollLeft = (cm.curOp.scrollLeft == null ? cm.doc.scrollLeft : cm.curOp.scrollLeft) + left; | |
4572 | if (top != null) | |
4573 | cm.curOp.scrollTop = (cm.curOp.scrollTop == null ? cm.doc.scrollTop : cm.curOp.scrollTop) + top; | |
4574 | } | |
4575 | ||
4576 | // Make sure that at the end of the operation the current cursor is | |
4577 | // shown. | |
4578 | function ensureCursorVisible(cm) { | |
4579 | resolveScrollToPos(cm); | |
4580 | var cur = cm.getCursor(), from = cur, to = cur; | |
4581 | if (!cm.options.lineWrapping) { | |
4582 | from = cur.ch ? Pos(cur.line, cur.ch - 1) : cur; | |
4583 | to = Pos(cur.line, cur.ch + 1); | |
4584 | } | |
4585 | cm.curOp.scrollToPos = {from: from, to: to, margin: cm.options.cursorScrollMargin, isCursor: true}; | |
4586 | } | |
4587 | ||
4588 | // When an operation has its scrollToPos property set, and another | |
4589 | // scroll action is applied before the end of the operation, this | |
4590 | // 'simulates' scrolling that position into view in a cheap way, so | |
4591 | // that the effect of intermediate scroll commands is not ignored. | |
4592 | function resolveScrollToPos(cm) { | |
4593 | var range = cm.curOp.scrollToPos; | |
4594 | if (range) { | |
4595 | cm.curOp.scrollToPos = null; | |
4596 | var from = estimateCoords(cm, range.from), to = estimateCoords(cm, range.to); | |
4597 | var sPos = calculateScrollPos(cm, Math.min(from.left, to.left), | |
4598 | Math.min(from.top, to.top) - range.margin, | |
4599 | Math.max(from.right, to.right), | |
4600 | Math.max(from.bottom, to.bottom) + range.margin); | |
4601 | cm.scrollTo(sPos.scrollLeft, sPos.scrollTop); | |
4602 | } | |
4603 | } | |
4604 | ||
4605 | // API UTILITIES | |
4606 | ||
4607 | // Indent the given line. The how parameter can be "smart", | |
4608 | // "add"/null, "subtract", or "prev". When aggressive is false | |
4609 | // (typically set to true for forced single-line indents), empty | |
4610 | // lines are not indented, and places where the mode returns Pass | |
4611 | // are left alone. | |
4612 | function indentLine(cm, n, how, aggressive) { | |
4613 | var doc = cm.doc, state; | |
4614 | if (how == null) how = "add"; | |
4615 | if (how == "smart") { | |
4616 | // Fall back to "prev" when the mode doesn't have an indentation | |
4617 | // method. | |
4618 | if (!doc.mode.indent) how = "prev"; | |
4619 | else state = getStateBefore(cm, n); | |
4620 | } | |
4621 | ||
4622 | var tabSize = cm.options.tabSize; | |
4623 | var line = getLine(doc, n), curSpace = countColumn(line.text, null, tabSize); | |
4624 | if (line.stateAfter) line.stateAfter = null; | |
4625 | var curSpaceString = line.text.match(/^\s*/)[0], indentation; | |
4626 | if (!aggressive && !/\S/.test(line.text)) { | |
4627 | indentation = 0; | |
4628 | how = "not"; | |
4629 | } else if (how == "smart") { | |
4630 | indentation = doc.mode.indent(state, line.text.slice(curSpaceString.length), line.text); | |
4631 | if (indentation == Pass || indentation > 150) { | |
4632 | if (!aggressive) return; | |
4633 | how = "prev"; | |
4634 | } | |
4635 | } | |
4636 | if (how == "prev") { | |
4637 | if (n > doc.first) indentation = countColumn(getLine(doc, n-1).text, null, tabSize); | |
4638 | else indentation = 0; | |
4639 | } else if (how == "add") { | |
4640 | indentation = curSpace + cm.options.indentUnit; | |
4641 | } else if (how == "subtract") { | |
4642 | indentation = curSpace - cm.options.indentUnit; | |
4643 | } else if (typeof how == "number") { | |
4644 | indentation = curSpace + how; | |
4645 | } | |
4646 | indentation = Math.max(0, indentation); | |
4647 | ||
4648 | var indentString = "", pos = 0; | |
4649 | if (cm.options.indentWithTabs) | |
4650 | for (var i = Math.floor(indentation / tabSize); i; --i) {pos += tabSize; indentString += "\t";} | |
4651 | if (pos < indentation) indentString += spaceStr(indentation - pos); | |
4652 | ||
4653 | if (indentString != curSpaceString) { | |
4654 | replaceRange(doc, indentString, Pos(n, 0), Pos(n, curSpaceString.length), "+input"); | |
4655 | line.stateAfter = null; | |
4656 | return true; | |
4657 | } else { | |
4658 | // Ensure that, if the cursor was in the whitespace at the start | |
4659 | // of the line, it is moved to the end of that space. | |
4660 | for (var i = 0; i < doc.sel.ranges.length; i++) { | |
4661 | var range = doc.sel.ranges[i]; | |
4662 | if (range.head.line == n && range.head.ch < curSpaceString.length) { | |
4663 | var pos = Pos(n, curSpaceString.length); | |
4664 | replaceOneSelection(doc, i, new Range(pos, pos)); | |
4665 | break; | |
4666 | } | |
4667 | } | |
4668 | } | |
4669 | } | |
4670 | ||
4671 | // Utility for applying a change to a line by handle or number, | |
4672 | // returning the number and optionally registering the line as | |
4673 | // changed. | |
4674 | function changeLine(doc, handle, changeType, op) { | |
4675 | var no = handle, line = handle; | |
4676 | if (typeof handle == "number") line = getLine(doc, clipLine(doc, handle)); | |
4677 | else no = lineNo(handle); | |
4678 | if (no == null) return null; | |
4679 | if (op(line, no) && doc.cm) regLineChange(doc.cm, no, changeType); | |
4680 | return line; | |
4681 | } | |
4682 | ||
4683 | // Helper for deleting text near the selection(s), used to implement | |
4684 | // backspace, delete, and similar functionality. | |
4685 | function deleteNearSelection(cm, compute) { | |
4686 | var ranges = cm.doc.sel.ranges, kill = []; | |
4687 | // Build up a set of ranges to kill first, merging overlapping | |
4688 | // ranges. | |
4689 | for (var i = 0; i < ranges.length; i++) { | |
4690 | var toKill = compute(ranges[i]); | |
4691 | while (kill.length && cmp(toKill.from, lst(kill).to) <= 0) { | |
4692 | var replaced = kill.pop(); | |
4693 | if (cmp(replaced.from, toKill.from) < 0) { | |
4694 | toKill.from = replaced.from; | |
4695 | break; | |
4696 | } | |
4697 | } | |
4698 | kill.push(toKill); | |
4699 | } | |
4700 | // Next, remove those actual ranges. | |
4701 | runInOp(cm, function() { | |
4702 | for (var i = kill.length - 1; i >= 0; i--) | |
4703 | replaceRange(cm.doc, "", kill[i].from, kill[i].to, "+delete"); | |
4704 | ensureCursorVisible(cm); | |
4705 | }); | |
4706 | } | |
4707 | ||
4708 | // Used for horizontal relative motion. Dir is -1 or 1 (left or | |
4709 | // right), unit can be "char", "column" (like char, but doesn't | |
4710 | // cross line boundaries), "word" (across next word), or "group" (to | |
4711 | // the start of next group of word or non-word-non-whitespace | |
4712 | // chars). The visually param controls whether, in right-to-left | |
4713 | // text, direction 1 means to move towards the next index in the | |
4714 | // string, or towards the character to the right of the current | |
4715 | // position. The resulting position will have a hitSide=true | |
4716 | // property if it reached the end of the document. | |
4717 | function findPosH(doc, pos, dir, unit, visually) { | |
4718 | var line = pos.line, ch = pos.ch, origDir = dir; | |
4719 | var lineObj = getLine(doc, line); | |
4720 | var possible = true; | |
4721 | function findNextLine() { | |
4722 | var l = line + dir; | |
4723 | if (l < doc.first || l >= doc.first + doc.size) return (possible = false); | |
4724 | line = l; | |
4725 | return lineObj = getLine(doc, l); | |
4726 | } | |
4727 | function moveOnce(boundToLine) { | |
4728 | var next = (visually ? moveVisually : moveLogically)(lineObj, ch, dir, true); | |
4729 | if (next == null) { | |
4730 | if (!boundToLine && findNextLine()) { | |
4731 | if (visually) ch = (dir < 0 ? lineRight : lineLeft)(lineObj); | |
4732 | else ch = dir < 0 ? lineObj.text.length : 0; | |
4733 | } else return (possible = false); | |
4734 | } else ch = next; | |
4735 | return true; | |
4736 | } | |
4737 | ||
4738 | if (unit == "char") moveOnce(); | |
4739 | else if (unit == "column") moveOnce(true); | |
4740 | else if (unit == "word" || unit == "group") { | |
4741 | var sawType = null, group = unit == "group"; | |
4742 | var helper = doc.cm && doc.cm.getHelper(pos, "wordChars"); | |
4743 | for (var first = true;; first = false) { | |
4744 | if (dir < 0 && !moveOnce(!first)) break; | |
4745 | var cur = lineObj.text.charAt(ch) || "\n"; | |
4746 | var type = isWordChar(cur, helper) ? "w" | |
4747 | : group && cur == "\n" ? "n" | |
4748 | : !group || /\s/.test(cur) ? null | |
4749 | : "p"; | |
4750 | if (group && !first && !type) type = "s"; | |
4751 | if (sawType && sawType != type) { | |
4752 | if (dir < 0) {dir = 1; moveOnce();} | |
4753 | break; | |
4754 | } | |
4755 | ||
4756 | if (type) sawType = type; | |
4757 | if (dir > 0 && !moveOnce(!first)) break; | |
4758 | } | |
4759 | } | |
4760 | var result = skipAtomic(doc, Pos(line, ch), origDir, true); | |
4761 | if (!possible) result.hitSide = true; | |
4762 | return result; | |
4763 | } | |
4764 | ||
4765 | // For relative vertical movement. Dir may be -1 or 1. Unit can be | |
4766 | // "page" or "line". The resulting position will have a hitSide=true | |
4767 | // property if it reached the end of the document. | |
4768 | function findPosV(cm, pos, dir, unit) { | |
4769 | var doc = cm.doc, x = pos.left, y; | |
4770 | if (unit == "page") { | |
4771 | var pageSize = Math.min(cm.display.wrapper.clientHeight, window.innerHeight || document.documentElement.clientHeight); | |
4772 | y = pos.top + dir * (pageSize - (dir < 0 ? 1.5 : .5) * textHeight(cm.display)); | |
4773 | } else if (unit == "line") { | |
4774 | y = dir > 0 ? pos.bottom + 3 : pos.top - 3; | |
4775 | } | |
4776 | for (;;) { | |
4777 | var target = coordsChar(cm, x, y); | |
4778 | if (!target.outside) break; | |
4779 | if (dir < 0 ? y <= 0 : y >= doc.height) { target.hitSide = true; break; } | |
4780 | y += dir * 5; | |
4781 | } | |
4782 | return target; | |
4783 | } | |
4784 | ||
4785 | // EDITOR METHODS | |
4786 | ||
4787 | // The publicly visible API. Note that methodOp(f) means | |
4788 | // 'wrap f in an operation, performed on its `this` parameter'. | |
4789 | ||
4790 | // This is not the complete set of editor methods. Most of the | |
4791 | // methods defined on the Doc type are also injected into | |
4792 | // CodeMirror.prototype, for backwards compatibility and | |
4793 | // convenience. | |
4794 | ||
4795 | CodeMirror.prototype = { | |
4796 | constructor: CodeMirror, | |
4797 | focus: function(){window.focus(); this.display.input.focus();}, | |
4798 | ||
4799 | setOption: function(option, value) { | |
4800 | var options = this.options, old = options[option]; | |
4801 | if (options[option] == value && option != "mode") return; | |
4802 | options[option] = value; | |
4803 | if (optionHandlers.hasOwnProperty(option)) | |
4804 | operation(this, optionHandlers[option])(this, value, old); | |
4805 | }, | |
4806 | ||
4807 | getOption: function(option) {return this.options[option];}, | |
4808 | getDoc: function() {return this.doc;}, | |
4809 | ||
4810 | addKeyMap: function(map, bottom) { | |
4811 | this.state.keyMaps[bottom ? "push" : "unshift"](getKeyMap(map)); | |
4812 | }, | |
4813 | removeKeyMap: function(map) { | |
4814 | var maps = this.state.keyMaps; | |
4815 | for (var i = 0; i < maps.length; ++i) | |
4816 | if (maps[i] == map || maps[i].name == map) { | |
4817 | maps.splice(i, 1); | |
4818 | return true; | |
4819 | } | |
4820 | }, | |
4821 | ||
4822 | addOverlay: methodOp(function(spec, options) { | |
4823 | var mode = spec.token ? spec : CodeMirror.getMode(this.options, spec); | |
4824 | if (mode.startState) throw new Error("Overlays may not be stateful."); | |
4825 | this.state.overlays.push({mode: mode, modeSpec: spec, opaque: options && options.opaque}); | |
4826 | this.state.modeGen++; | |
4827 | regChange(this); | |
4828 | }), | |
4829 | removeOverlay: methodOp(function(spec) { | |
4830 | var overlays = this.state.overlays; | |
4831 | for (var i = 0; i < overlays.length; ++i) { | |
4832 | var cur = overlays[i].modeSpec; | |
4833 | if (cur == spec || typeof spec == "string" && cur.name == spec) { | |
4834 | overlays.splice(i, 1); | |
4835 | this.state.modeGen++; | |
4836 | regChange(this); | |
4837 | return; | |
4838 | } | |
4839 | } | |
4840 | }), | |
4841 | ||
4842 | indentLine: methodOp(function(n, dir, aggressive) { | |
4843 | if (typeof dir != "string" && typeof dir != "number") { | |
4844 | if (dir == null) dir = this.options.smartIndent ? "smart" : "prev"; | |
4845 | else dir = dir ? "add" : "subtract"; | |
4846 | } | |
4847 | if (isLine(this.doc, n)) indentLine(this, n, dir, aggressive); | |
4848 | }), | |
4849 | indentSelection: methodOp(function(how) { | |
4850 | var ranges = this.doc.sel.ranges, end = -1; | |
4851 | for (var i = 0; i < ranges.length; i++) { | |
4852 | var range = ranges[i]; | |
4853 | if (!range.empty()) { | |
4854 | var from = range.from(), to = range.to(); | |
4855 | var start = Math.max(end, from.line); | |
4856 | end = Math.min(this.lastLine(), to.line - (to.ch ? 0 : 1)) + 1; | |
4857 | for (var j = start; j < end; ++j) | |
4858 | indentLine(this, j, how); | |
4859 | var newRanges = this.doc.sel.ranges; | |
4860 | if (from.ch == 0 && ranges.length == newRanges.length && newRanges[i].from().ch > 0) | |
4861 | replaceOneSelection(this.doc, i, new Range(from, newRanges[i].to()), sel_dontScroll); | |
4862 | } else if (range.head.line > end) { | |
4863 | indentLine(this, range.head.line, how, true); | |
4864 | end = range.head.line; | |
4865 | if (i == this.doc.sel.primIndex) ensureCursorVisible(this); | |
4866 | } | |
4867 | } | |
4868 | }), | |
4869 | ||
4870 | // Fetch the parser token for a given character. Useful for hacks | |
4871 | // that want to inspect the mode state (say, for completion). | |
4872 | getTokenAt: function(pos, precise) { | |
4873 | return takeToken(this, pos, precise); | |
4874 | }, | |
4875 | ||
4876 | getLineTokens: function(line, precise) { | |
4877 | return takeToken(this, Pos(line), precise, true); | |
4878 | }, | |
4879 | ||
4880 | getTokenTypeAt: function(pos) { | |
4881 | pos = clipPos(this.doc, pos); | |
4882 | var styles = getLineStyles(this, getLine(this.doc, pos.line)); | |
4883 | var before = 0, after = (styles.length - 1) / 2, ch = pos.ch; | |
4884 | var type; | |
4885 | if (ch == 0) type = styles[2]; | |
4886 | else for (;;) { | |
4887 | var mid = (before + after) >> 1; | |
4888 | if ((mid ? styles[mid * 2 - 1] : 0) >= ch) after = mid; | |
4889 | else if (styles[mid * 2 + 1] < ch) before = mid + 1; | |
4890 | else { type = styles[mid * 2 + 2]; break; } | |
4891 | } | |
4892 | var cut = type ? type.indexOf("cm-overlay ") : -1; | |
4893 | return cut < 0 ? type : cut == 0 ? null : type.slice(0, cut - 1); | |
4894 | }, | |
4895 | ||
4896 | getModeAt: function(pos) { | |
4897 | var mode = this.doc.mode; | |
4898 | if (!mode.innerMode) return mode; | |
4899 | return CodeMirror.innerMode(mode, this.getTokenAt(pos).state).mode; | |
4900 | }, | |
4901 | ||
4902 | getHelper: function(pos, type) { | |
4903 | return this.getHelpers(pos, type)[0]; | |
4904 | }, | |
4905 | ||
4906 | getHelpers: function(pos, type) { | |
4907 | var found = []; | |
4908 | if (!helpers.hasOwnProperty(type)) return found; | |
4909 | var help = helpers[type], mode = this.getModeAt(pos); | |
4910 | if (typeof mode[type] == "string") { | |
4911 | if (help[mode[type]]) found.push(help[mode[type]]); | |
4912 | } else if (mode[type]) { | |
4913 | for (var i = 0; i < mode[type].length; i++) { | |
4914 | var val = help[mode[type][i]]; | |
4915 | if (val) found.push(val); | |
4916 | } | |
4917 | } else if (mode.helperType && help[mode.helperType]) { | |
4918 | found.push(help[mode.helperType]); | |
4919 | } else if (help[mode.name]) { | |
4920 | found.push(help[mode.name]); | |
4921 | } | |
4922 | for (var i = 0; i < help._global.length; i++) { | |
4923 | var cur = help._global[i]; | |
4924 | if (cur.pred(mode, this) && indexOf(found, cur.val) == -1) | |
4925 | found.push(cur.val); | |
4926 | } | |
4927 | return found; | |
4928 | }, | |
4929 | ||
4930 | getStateAfter: function(line, precise) { | |
4931 | var doc = this.doc; | |
4932 | line = clipLine(doc, line == null ? doc.first + doc.size - 1: line); | |
4933 | return getStateBefore(this, line + 1, precise); | |
4934 | }, | |
4935 | ||
4936 | cursorCoords: function(start, mode) { | |
4937 | var pos, range = this.doc.sel.primary(); | |
4938 | if (start == null) pos = range.head; | |
4939 | else if (typeof start == "object") pos = clipPos(this.doc, start); | |
4940 | else pos = start ? range.from() : range.to(); | |
4941 | return cursorCoords(this, pos, mode || "page"); | |
4942 | }, | |
4943 | ||
4944 | charCoords: function(pos, mode) { | |
4945 | return charCoords(this, clipPos(this.doc, pos), mode || "page"); | |
4946 | }, | |
4947 | ||
4948 | coordsChar: function(coords, mode) { | |
4949 | coords = fromCoordSystem(this, coords, mode || "page"); | |
4950 | return coordsChar(this, coords.left, coords.top); | |
4951 | }, | |
4952 | ||
4953 | lineAtHeight: function(height, mode) { | |
4954 | height = fromCoordSystem(this, {top: height, left: 0}, mode || "page").top; | |
4955 | return lineAtHeight(this.doc, height + this.display.viewOffset); | |
4956 | }, | |
4957 | heightAtLine: function(line, mode) { | |
4958 | var end = false, lineObj; | |
4959 | if (typeof line == "number") { | |
4960 | var last = this.doc.first + this.doc.size - 1; | |
4961 | if (line < this.doc.first) line = this.doc.first; | |
4962 | else if (line > last) { line = last; end = true; } | |
4963 | lineObj = getLine(this.doc, line); | |
4964 | } else { | |
4965 | lineObj = line; | |
4966 | } | |
4967 | return intoCoordSystem(this, lineObj, {top: 0, left: 0}, mode || "page").top + | |
4968 | (end ? this.doc.height - heightAtLine(lineObj) : 0); | |
4969 | }, | |
4970 | ||
4971 | defaultTextHeight: function() { return textHeight(this.display); }, | |
4972 | defaultCharWidth: function() { return charWidth(this.display); }, | |
4973 | ||
4974 | setGutterMarker: methodOp(function(line, gutterID, value) { | |
4975 | return changeLine(this.doc, line, "gutter", function(line) { | |
4976 | var markers = line.gutterMarkers || (line.gutterMarkers = {}); | |
4977 | markers[gutterID] = value; | |
4978 | if (!value && isEmpty(markers)) line.gutterMarkers = null; | |
4979 | return true; | |
4980 | }); | |
4981 | }), | |
4982 | ||
4983 | clearGutter: methodOp(function(gutterID) { | |
4984 | var cm = this, doc = cm.doc, i = doc.first; | |
4985 | doc.iter(function(line) { | |
4986 | if (line.gutterMarkers && line.gutterMarkers[gutterID]) { | |
4987 | line.gutterMarkers[gutterID] = null; | |
4988 | regLineChange(cm, i, "gutter"); | |
4989 | if (isEmpty(line.gutterMarkers)) line.gutterMarkers = null; | |
4990 | } | |
4991 | ++i; | |
4992 | }); | |
4993 | }), | |
4994 | ||
4995 | lineInfo: function(line) { | |
4996 | if (typeof line == "number") { | |
4997 | if (!isLine(this.doc, line)) return null; | |
4998 | var n = line; | |
4999 | line = getLine(this.doc, line); | |
5000 | if (!line) return null; | |
5001 | } else { | |
5002 | var n = lineNo(line); | |
5003 | if (n == null) return null; | |
5004 | } | |
5005 | return {line: n, handle: line, text: line.text, gutterMarkers: line.gutterMarkers, | |
5006 | textClass: line.textClass, bgClass: line.bgClass, wrapClass: line.wrapClass, | |
5007 | widgets: line.widgets}; | |
5008 | }, | |
5009 | ||
5010 | getViewport: function() { return {from: this.display.viewFrom, to: this.display.viewTo};}, | |
5011 | ||
5012 | addWidget: function(pos, node, scroll, vert, horiz) { | |
5013 | var display = this.display; | |
5014 | pos = cursorCoords(this, clipPos(this.doc, pos)); | |
5015 | var top = pos.bottom, left = pos.left; | |
5016 | node.style.position = "absolute"; | |
5017 | node.setAttribute("cm-ignore-events", "true"); | |
5018 | this.display.input.setUneditable(node); | |
5019 | display.sizer.appendChild(node); | |
5020 | if (vert == "over") { | |
5021 | top = pos.top; | |
5022 | } else if (vert == "above" || vert == "near") { | |
5023 | var vspace = Math.max(display.wrapper.clientHeight, this.doc.height), | |
5024 | hspace = Math.max(display.sizer.clientWidth, display.lineSpace.clientWidth); | |
5025 | // Default to positioning above (if specified and possible); otherwise default to positioning below | |
5026 | if ((vert == 'above' || pos.bottom + node.offsetHeight > vspace) && pos.top > node.offsetHeight) | |
5027 | top = pos.top - node.offsetHeight; | |
5028 | else if (pos.bottom + node.offsetHeight <= vspace) | |
5029 | top = pos.bottom; | |
5030 | if (left + node.offsetWidth > hspace) | |
5031 | left = hspace - node.offsetWidth; | |
5032 | } | |
5033 | node.style.top = top + "px"; | |
5034 | node.style.left = node.style.right = ""; | |
5035 | if (horiz == "right") { | |
5036 | left = display.sizer.clientWidth - node.offsetWidth; | |
5037 | node.style.right = "0px"; | |
5038 | } else { | |
5039 | if (horiz == "left") left = 0; | |
5040 | else if (horiz == "middle") left = (display.sizer.clientWidth - node.offsetWidth) / 2; | |
5041 | node.style.left = left + "px"; | |
5042 | } | |
5043 | if (scroll) | |
5044 | scrollIntoView(this, left, top, left + node.offsetWidth, top + node.offsetHeight); | |
5045 | }, | |
5046 | ||
5047 | triggerOnKeyDown: methodOp(onKeyDown), | |
5048 | triggerOnKeyPress: methodOp(onKeyPress), | |
5049 | triggerOnKeyUp: onKeyUp, | |
5050 | ||
5051 | execCommand: function(cmd) { | |
5052 | if (commands.hasOwnProperty(cmd)) | |
5053 | return commands[cmd](this); | |
5054 | }, | |
5055 | ||
5056 | findPosH: function(from, amount, unit, visually) { | |
5057 | var dir = 1; | |
5058 | if (amount < 0) { dir = -1; amount = -amount; } | |
5059 | for (var i = 0, cur = clipPos(this.doc, from); i < amount; ++i) { | |
5060 | cur = findPosH(this.doc, cur, dir, unit, visually); | |
5061 | if (cur.hitSide) break; | |
5062 | } | |
5063 | return cur; | |
5064 | }, | |
5065 | ||
5066 | moveH: methodOp(function(dir, unit) { | |
5067 | var cm = this; | |
5068 | cm.extendSelectionsBy(function(range) { | |
5069 | if (cm.display.shift || cm.doc.extend || range.empty()) | |
5070 | return findPosH(cm.doc, range.head, dir, unit, cm.options.rtlMoveVisually); | |
5071 | else | |
5072 | return dir < 0 ? range.from() : range.to(); | |
5073 | }, sel_move); | |
5074 | }), | |
5075 | ||
5076 | deleteH: methodOp(function(dir, unit) { | |
5077 | var sel = this.doc.sel, doc = this.doc; | |
5078 | if (sel.somethingSelected()) | |
5079 | doc.replaceSelection("", null, "+delete"); | |
5080 | else | |
5081 | deleteNearSelection(this, function(range) { | |
5082 | var other = findPosH(doc, range.head, dir, unit, false); | |
5083 | return dir < 0 ? {from: other, to: range.head} : {from: range.head, to: other}; | |
5084 | }); | |
5085 | }), | |
5086 | ||
5087 | findPosV: function(from, amount, unit, goalColumn) { | |
5088 | var dir = 1, x = goalColumn; | |
5089 | if (amount < 0) { dir = -1; amount = -amount; } | |
5090 | for (var i = 0, cur = clipPos(this.doc, from); i < amount; ++i) { | |
5091 | var coords = cursorCoords(this, cur, "div"); | |
5092 | if (x == null) x = coords.left; | |
5093 | else coords.left = x; | |
5094 | cur = findPosV(this, coords, dir, unit); | |
5095 | if (cur.hitSide) break; | |
5096 | } | |
5097 | return cur; | |
5098 | }, | |
5099 | ||
5100 | moveV: methodOp(function(dir, unit) { | |
5101 | var cm = this, doc = this.doc, goals = []; | |
5102 | var collapse = !cm.display.shift && !doc.extend && doc.sel.somethingSelected(); | |
5103 | doc.extendSelectionsBy(function(range) { | |
5104 | if (collapse) | |
5105 | return dir < 0 ? range.from() : range.to(); | |
5106 | var headPos = cursorCoords(cm, range.head, "div"); | |
5107 | if (range.goalColumn != null) headPos.left = range.goalColumn; | |
5108 | goals.push(headPos.left); | |
5109 | var pos = findPosV(cm, headPos, dir, unit); | |
5110 | if (unit == "page" && range == doc.sel.primary()) | |
5111 | addToScrollPos(cm, null, charCoords(cm, pos, "div").top - headPos.top); | |
5112 | return pos; | |
5113 | }, sel_move); | |
5114 | if (goals.length) for (var i = 0; i < doc.sel.ranges.length; i++) | |
5115 | doc.sel.ranges[i].goalColumn = goals[i]; | |
5116 | }), | |
5117 | ||
5118 | // Find the word at the given position (as returned by coordsChar). | |
5119 | findWordAt: function(pos) { | |
5120 | var doc = this.doc, line = getLine(doc, pos.line).text; | |
5121 | var start = pos.ch, end = pos.ch; | |
5122 | if (line) { | |
5123 | var helper = this.getHelper(pos, "wordChars"); | |
5124 | if ((pos.xRel < 0 || end == line.length) && start) --start; else ++end; | |
5125 | var startChar = line.charAt(start); | |
5126 | var check = isWordChar(startChar, helper) | |
5127 | ? function(ch) { return isWordChar(ch, helper); } | |
5128 | : /\s/.test(startChar) ? function(ch) {return /\s/.test(ch);} | |
5129 | : function(ch) {return !/\s/.test(ch) && !isWordChar(ch);}; | |
5130 | while (start > 0 && check(line.charAt(start - 1))) --start; | |
5131 | while (end < line.length && check(line.charAt(end))) ++end; | |
5132 | } | |
5133 | return new Range(Pos(pos.line, start), Pos(pos.line, end)); | |
5134 | }, | |
5135 | ||
5136 | toggleOverwrite: function(value) { | |
5137 | if (value != null && value == this.state.overwrite) return; | |
5138 | if (this.state.overwrite = !this.state.overwrite) | |
5139 | addClass(this.display.cursorDiv, "CodeMirror-overwrite"); | |
5140 | else | |
5141 | rmClass(this.display.cursorDiv, "CodeMirror-overwrite"); | |
5142 | ||
5143 | signal(this, "overwriteToggle", this, this.state.overwrite); | |
5144 | }, | |
5145 | hasFocus: function() { return this.display.input.getField() == activeElt(); }, | |
5146 | ||
5147 | scrollTo: methodOp(function(x, y) { | |
5148 | if (x != null || y != null) resolveScrollToPos(this); | |
5149 | if (x != null) this.curOp.scrollLeft = x; | |
5150 | if (y != null) this.curOp.scrollTop = y; | |
5151 | }), | |
5152 | getScrollInfo: function() { | |
5153 | var scroller = this.display.scroller; | |
5154 | return {left: scroller.scrollLeft, top: scroller.scrollTop, | |
5155 | height: scroller.scrollHeight - scrollGap(this) - this.display.barHeight, | |
5156 | width: scroller.scrollWidth - scrollGap(this) - this.display.barWidth, | |
5157 | clientHeight: displayHeight(this), clientWidth: displayWidth(this)}; | |
5158 | }, | |
5159 | ||
5160 | scrollIntoView: methodOp(function(range, margin) { | |
5161 | if (range == null) { | |
5162 | range = {from: this.doc.sel.primary().head, to: null}; | |
5163 | if (margin == null) margin = this.options.cursorScrollMargin; | |
5164 | } else if (typeof range == "number") { | |
5165 | range = {from: Pos(range, 0), to: null}; | |
5166 | } else if (range.from == null) { | |
5167 | range = {from: range, to: null}; | |
5168 | } | |
5169 | if (!range.to) range.to = range.from; | |
5170 | range.margin = margin || 0; | |
5171 | ||
5172 | if (range.from.line != null) { | |
5173 | resolveScrollToPos(this); | |
5174 | this.curOp.scrollToPos = range; | |
5175 | } else { | |
5176 | var sPos = calculateScrollPos(this, Math.min(range.from.left, range.to.left), | |
5177 | Math.min(range.from.top, range.to.top) - range.margin, | |
5178 | Math.max(range.from.right, range.to.right), | |
5179 | Math.max(range.from.bottom, range.to.bottom) + range.margin); | |
5180 | this.scrollTo(sPos.scrollLeft, sPos.scrollTop); | |
5181 | } | |
5182 | }), | |
5183 | ||
5184 | setSize: methodOp(function(width, height) { | |
5185 | var cm = this; | |
5186 | function interpret(val) { | |
5187 | return typeof val == "number" || /^\d+$/.test(String(val)) ? val + "px" : val; | |
5188 | } | |
5189 | if (width != null) cm.display.wrapper.style.width = interpret(width); | |
5190 | if (height != null) cm.display.wrapper.style.height = interpret(height); | |
5191 | if (cm.options.lineWrapping) clearLineMeasurementCache(this); | |
5192 | var lineNo = cm.display.viewFrom; | |
5193 | cm.doc.iter(lineNo, cm.display.viewTo, function(line) { | |
5194 | if (line.widgets) for (var i = 0; i < line.widgets.length; i++) | |
5195 | if (line.widgets[i].noHScroll) { regLineChange(cm, lineNo, "widget"); break; } | |
5196 | ++lineNo; | |
5197 | }); | |
5198 | cm.curOp.forceUpdate = true; | |
5199 | signal(cm, "refresh", this); | |
5200 | }), | |
5201 | ||
5202 | operation: function(f){return runInOp(this, f);}, | |
5203 | ||
5204 | refresh: methodOp(function() { | |
5205 | var oldHeight = this.display.cachedTextHeight; | |
5206 | regChange(this); | |
5207 | this.curOp.forceUpdate = true; | |
5208 | clearCaches(this); | |
5209 | this.scrollTo(this.doc.scrollLeft, this.doc.scrollTop); | |
5210 | updateGutterSpace(this); | |
5211 | if (oldHeight == null || Math.abs(oldHeight - textHeight(this.display)) > .5) | |
5212 | estimateLineHeights(this); | |
5213 | signal(this, "refresh", this); | |
5214 | }), | |
5215 | ||
5216 | swapDoc: methodOp(function(doc) { | |
5217 | var old = this.doc; | |
5218 | old.cm = null; | |
5219 | attachDoc(this, doc); | |
5220 | clearCaches(this); | |
5221 | this.display.input.reset(); | |
5222 | this.scrollTo(doc.scrollLeft, doc.scrollTop); | |
5223 | this.curOp.forceScroll = true; | |
5224 | signalLater(this, "swapDoc", this, old); | |
5225 | return old; | |
5226 | }), | |
5227 | ||
5228 | getInputField: function(){return this.display.input.getField();}, | |
5229 | getWrapperElement: function(){return this.display.wrapper;}, | |
5230 | getScrollerElement: function(){return this.display.scroller;}, | |
5231 | getGutterElement: function(){return this.display.gutters;} | |
5232 | }; | |
5233 | eventMixin(CodeMirror); | |
5234 | ||
5235 | // OPTION DEFAULTS | |
5236 | ||
5237 | // The default configuration options. | |
5238 | var defaults = CodeMirror.defaults = {}; | |
5239 | // Functions to run when options are changed. | |
5240 | var optionHandlers = CodeMirror.optionHandlers = {}; | |
5241 | ||
5242 | function option(name, deflt, handle, notOnInit) { | |
5243 | CodeMirror.defaults[name] = deflt; | |
5244 | if (handle) optionHandlers[name] = | |
5245 | notOnInit ? function(cm, val, old) {if (old != Init) handle(cm, val, old);} : handle; | |
5246 | } | |
5247 | ||
5248 | // Passed to option handlers when there is no old value. | |
5249 | var Init = CodeMirror.Init = {toString: function(){return "CodeMirror.Init";}}; | |
5250 | ||
5251 | // These two are, on init, called from the constructor because they | |
5252 | // have to be initialized before the editor can start at all. | |
5253 | option("value", "", function(cm, val) { | |
5254 | cm.setValue(val); | |
5255 | }, true); | |
5256 | option("mode", null, function(cm, val) { | |
5257 | cm.doc.modeOption = val; | |
5258 | loadMode(cm); | |
5259 | }, true); | |
5260 | ||
5261 | option("indentUnit", 2, loadMode, true); | |
5262 | option("indentWithTabs", false); | |
5263 | option("smartIndent", true); | |
5264 | option("tabSize", 4, function(cm) { | |
5265 | resetModeState(cm); | |
5266 | clearCaches(cm); | |
5267 | regChange(cm); | |
5268 | }, true); | |
5269 | option("specialChars", /[\t\u0000-\u0019\u00ad\u200b-\u200f\u2028\u2029\ufeff]/g, function(cm, val, old) { | |
5270 | cm.state.specialChars = new RegExp(val.source + (val.test("\t") ? "" : "|\t"), "g"); | |
5271 | if (old != CodeMirror.Init) cm.refresh(); | |
5272 | }); | |
5273 | option("specialCharPlaceholder", defaultSpecialCharPlaceholder, function(cm) {cm.refresh();}, true); | |
5274 | option("electricChars", true); | |
5275 | option("inputStyle", mobile ? "contenteditable" : "textarea", function() { | |
5276 | throw new Error("inputStyle can not (yet) be changed in a running editor"); // FIXME | |
5277 | }, true); | |
5278 | option("rtlMoveVisually", !windows); | |
5279 | option("wholeLineUpdateBefore", true); | |
5280 | ||
5281 | option("theme", "default", function(cm) { | |
5282 | themeChanged(cm); | |
5283 | guttersChanged(cm); | |
5284 | }, true); | |
5285 | option("keyMap", "default", function(cm, val, old) { | |
5286 | var next = getKeyMap(val); | |
5287 | var prev = old != CodeMirror.Init && getKeyMap(old); | |
5288 | if (prev && prev.detach) prev.detach(cm, next); | |
5289 | if (next.attach) next.attach(cm, prev || null); | |
5290 | }); | |
5291 | option("extraKeys", null); | |
5292 | ||
5293 | option("lineWrapping", false, wrappingChanged, true); | |
5294 | option("gutters", [], function(cm) { | |
5295 | setGuttersForLineNumbers(cm.options); | |
5296 | guttersChanged(cm); | |
5297 | }, true); | |
5298 | option("fixedGutter", true, function(cm, val) { | |
5299 | cm.display.gutters.style.left = val ? compensateForHScroll(cm.display) + "px" : "0"; | |
5300 | cm.refresh(); | |
5301 | }, true); | |
5302 | option("coverGutterNextToScrollbar", false, function(cm) {updateScrollbars(cm);}, true); | |
5303 | option("scrollbarStyle", "native", function(cm) { | |
5304 | initScrollbars(cm); | |
5305 | updateScrollbars(cm); | |
5306 | cm.display.scrollbars.setScrollTop(cm.doc.scrollTop); | |
5307 | cm.display.scrollbars.setScrollLeft(cm.doc.scrollLeft); | |
5308 | }, true); | |
5309 | option("lineNumbers", false, function(cm) { | |
5310 | setGuttersForLineNumbers(cm.options); | |
5311 | guttersChanged(cm); | |
5312 | }, true); | |
5313 | option("firstLineNumber", 1, guttersChanged, true); | |
5314 | option("lineNumberFormatter", function(integer) {return integer;}, guttersChanged, true); | |
5315 | option("showCursorWhenSelecting", false, updateSelection, true); | |
5316 | ||
5317 | option("resetSelectionOnContextMenu", true); | |
5318 | option("lineWiseCopyCut", true); | |
5319 | ||
5320 | option("readOnly", false, function(cm, val) { | |
5321 | if (val == "nocursor") { | |
5322 | onBlur(cm); | |
5323 | cm.display.input.blur(); | |
5324 | cm.display.disabled = true; | |
5325 | } else { | |
5326 | cm.display.disabled = false; | |
5327 | if (!val) cm.display.input.reset(); | |
5328 | } | |
5329 | }); | |
5330 | option("disableInput", false, function(cm, val) {if (!val) cm.display.input.reset();}, true); | |
5331 | option("dragDrop", true, dragDropChanged); | |
5332 | ||
5333 | option("cursorBlinkRate", 530); | |
5334 | option("cursorScrollMargin", 0); | |
5335 | option("cursorHeight", 1, updateSelection, true); | |
5336 | option("singleCursorHeightPerLine", true, updateSelection, true); | |
5337 | option("workTime", 100); | |
5338 | option("workDelay", 100); | |
5339 | option("flattenSpans", true, resetModeState, true); | |
5340 | option("addModeClass", false, resetModeState, true); | |
5341 | option("pollInterval", 100); | |
5342 | option("undoDepth", 200, function(cm, val){cm.doc.history.undoDepth = val;}); | |
5343 | option("historyEventDelay", 1250); | |
5344 | option("viewportMargin", 10, function(cm){cm.refresh();}, true); | |
5345 | option("maxHighlightLength", 10000, resetModeState, true); | |
5346 | option("moveInputWithCursor", true, function(cm, val) { | |
5347 | if (!val) cm.display.input.resetPosition(); | |
5348 | }); | |
5349 | ||
5350 | option("tabindex", null, function(cm, val) { | |
5351 | cm.display.input.getField().tabIndex = val || ""; | |
5352 | }); | |
5353 | option("autofocus", null); | |
5354 | ||
5355 | // MODE DEFINITION AND QUERYING | |
5356 | ||
5357 | // Known modes, by name and by MIME | |
5358 | var modes = CodeMirror.modes = {}, mimeModes = CodeMirror.mimeModes = {}; | |
5359 | ||
5360 | // Extra arguments are stored as the mode's dependencies, which is | |
5361 | // used by (legacy) mechanisms like loadmode.js to automatically | |
5362 | // load a mode. (Preferred mechanism is the require/define calls.) | |
5363 | CodeMirror.defineMode = function(name, mode) { | |
5364 | if (!CodeMirror.defaults.mode && name != "null") CodeMirror.defaults.mode = name; | |
5365 | if (arguments.length > 2) | |
5366 | mode.dependencies = Array.prototype.slice.call(arguments, 2); | |
5367 | modes[name] = mode; | |
5368 | }; | |
5369 | ||
5370 | CodeMirror.defineMIME = function(mime, spec) { | |
5371 | mimeModes[mime] = spec; | |
5372 | }; | |
5373 | ||
5374 | // Given a MIME type, a {name, ...options} config object, or a name | |
5375 | // string, return a mode config object. | |
5376 | CodeMirror.resolveMode = function(spec) { | |
5377 | if (typeof spec == "string" && mimeModes.hasOwnProperty(spec)) { | |
5378 | spec = mimeModes[spec]; | |
5379 | } else if (spec && typeof spec.name == "string" && mimeModes.hasOwnProperty(spec.name)) { | |
5380 | var found = mimeModes[spec.name]; | |
5381 | if (typeof found == "string") found = {name: found}; | |
5382 | spec = createObj(found, spec); | |
5383 | spec.name = found.name; | |
5384 | } else if (typeof spec == "string" && /^[\w\-]+\/[\w\-]+\+xml$/.test(spec)) { | |
5385 | return CodeMirror.resolveMode("application/xml"); | |
5386 | } | |
5387 | if (typeof spec == "string") return {name: spec}; | |
5388 | else return spec || {name: "null"}; | |
5389 | }; | |
5390 | ||
5391 | // Given a mode spec (anything that resolveMode accepts), find and | |
5392 | // initialize an actual mode object. | |
5393 | CodeMirror.getMode = function(options, spec) { | |
5394 | var spec = CodeMirror.resolveMode(spec); | |
5395 | var mfactory = modes[spec.name]; | |
5396 | if (!mfactory) return CodeMirror.getMode(options, "text/plain"); | |
5397 | var modeObj = mfactory(options, spec); | |
5398 | if (modeExtensions.hasOwnProperty(spec.name)) { | |
5399 | var exts = modeExtensions[spec.name]; | |
5400 | for (var prop in exts) { | |
5401 | if (!exts.hasOwnProperty(prop)) continue; | |
5402 | if (modeObj.hasOwnProperty(prop)) modeObj["_" + prop] = modeObj[prop]; | |
5403 | modeObj[prop] = exts[prop]; | |
5404 | } | |
5405 | } | |
5406 | modeObj.name = spec.name; | |
5407 | if (spec.helperType) modeObj.helperType = spec.helperType; | |
5408 | if (spec.modeProps) for (var prop in spec.modeProps) | |
5409 | modeObj[prop] = spec.modeProps[prop]; | |
5410 | ||
5411 | return modeObj; | |
5412 | }; | |
5413 | ||
5414 | // Minimal default mode. | |
5415 | CodeMirror.defineMode("null", function() { | |
5416 | return {token: function(stream) {stream.skipToEnd();}}; | |
5417 | }); | |
5418 | CodeMirror.defineMIME("text/plain", "null"); | |
5419 | ||
5420 | // This can be used to attach properties to mode objects from | |
5421 | // outside the actual mode definition. | |
5422 | var modeExtensions = CodeMirror.modeExtensions = {}; | |
5423 | CodeMirror.extendMode = function(mode, properties) { | |
5424 | var exts = modeExtensions.hasOwnProperty(mode) ? modeExtensions[mode] : (modeExtensions[mode] = {}); | |
5425 | copyObj(properties, exts); | |
5426 | }; | |
5427 | ||
5428 | // EXTENSIONS | |
5429 | ||
5430 | CodeMirror.defineExtension = function(name, func) { | |
5431 | CodeMirror.prototype[name] = func; | |
5432 | }; | |
5433 | CodeMirror.defineDocExtension = function(name, func) { | |
5434 | Doc.prototype[name] = func; | |
5435 | }; | |
5436 | CodeMirror.defineOption = option; | |
5437 | ||
5438 | var initHooks = []; | |
5439 | CodeMirror.defineInitHook = function(f) {initHooks.push(f);}; | |
5440 | ||
5441 | var helpers = CodeMirror.helpers = {}; | |
5442 | CodeMirror.registerHelper = function(type, name, value) { | |
5443 | if (!helpers.hasOwnProperty(type)) helpers[type] = CodeMirror[type] = {_global: []}; | |
5444 | helpers[type][name] = value; | |
5445 | }; | |
5446 | CodeMirror.registerGlobalHelper = function(type, name, predicate, value) { | |
5447 | CodeMirror.registerHelper(type, name, value); | |
5448 | helpers[type]._global.push({pred: predicate, val: value}); | |
5449 | }; | |
5450 | ||
5451 | // MODE STATE HANDLING | |
5452 | ||
5453 | // Utility functions for working with state. Exported because nested | |
5454 | // modes need to do this for their inner modes. | |
5455 | ||
5456 | var copyState = CodeMirror.copyState = function(mode, state) { | |
5457 | if (state === true) return state; | |
5458 | if (mode.copyState) return mode.copyState(state); | |
5459 | var nstate = {}; | |
5460 | for (var n in state) { | |
5461 | var val = state[n]; | |
5462 | if (val instanceof Array) val = val.concat([]); | |
5463 | nstate[n] = val; | |
5464 | } | |
5465 | return nstate; | |
5466 | }; | |
5467 | ||
5468 | var startState = CodeMirror.startState = function(mode, a1, a2) { | |
5469 | return mode.startState ? mode.startState(a1, a2) : true; | |
5470 | }; | |
5471 | ||
5472 | // Given a mode and a state (for that mode), find the inner mode and | |
5473 | // state at the position that the state refers to. | |
5474 | CodeMirror.innerMode = function(mode, state) { | |
5475 | while (mode.innerMode) { | |
5476 | var info = mode.innerMode(state); | |
5477 | if (!info || info.mode == mode) break; | |
5478 | state = info.state; | |
5479 | mode = info.mode; | |
5480 | } | |
5481 | return info || {mode: mode, state: state}; | |
5482 | }; | |
5483 | ||
5484 | // STANDARD COMMANDS | |
5485 | ||
5486 | // Commands are parameter-less actions that can be performed on an | |
5487 | // editor, mostly used for keybindings. | |
5488 | var commands = CodeMirror.commands = { | |
5489 | selectAll: function(cm) {cm.setSelection(Pos(cm.firstLine(), 0), Pos(cm.lastLine()), sel_dontScroll);}, | |
5490 | singleSelection: function(cm) { | |
5491 | cm.setSelection(cm.getCursor("anchor"), cm.getCursor("head"), sel_dontScroll); | |
5492 | }, | |
5493 | killLine: function(cm) { | |
5494 | deleteNearSelection(cm, function(range) { | |
5495 | if (range.empty()) { | |
5496 | var len = getLine(cm.doc, range.head.line).text.length; | |
5497 | if (range.head.ch == len && range.head.line < cm.lastLine()) | |
5498 | return {from: range.head, to: Pos(range.head.line + 1, 0)}; | |
5499 | else | |
5500 | return {from: range.head, to: Pos(range.head.line, len)}; | |
5501 | } else { | |
5502 | return {from: range.from(), to: range.to()}; | |
5503 | } | |
5504 | }); | |
5505 | }, | |
5506 | deleteLine: function(cm) { | |
5507 | deleteNearSelection(cm, function(range) { | |
5508 | return {from: Pos(range.from().line, 0), | |
5509 | to: clipPos(cm.doc, Pos(range.to().line + 1, 0))}; | |
5510 | }); | |
5511 | }, | |
5512 | delLineLeft: function(cm) { | |
5513 | deleteNearSelection(cm, function(range) { | |
5514 | return {from: Pos(range.from().line, 0), to: range.from()}; | |
5515 | }); | |
5516 | }, | |
5517 | delWrappedLineLeft: function(cm) { | |
5518 | deleteNearSelection(cm, function(range) { | |
5519 | var top = cm.charCoords(range.head, "div").top + 5; | |
5520 | var leftPos = cm.coordsChar({left: 0, top: top}, "div"); | |
5521 | return {from: leftPos, to: range.from()}; | |
5522 | }); | |
5523 | }, | |
5524 | delWrappedLineRight: function(cm) { | |
5525 | deleteNearSelection(cm, function(range) { | |
5526 | var top = cm.charCoords(range.head, "div").top + 5; | |
5527 | var rightPos = cm.coordsChar({left: cm.display.lineDiv.offsetWidth + 100, top: top}, "div"); | |
5528 | return {from: range.from(), to: rightPos }; | |
5529 | }); | |
5530 | }, | |
5531 | undo: function(cm) {cm.undo();}, | |
5532 | redo: function(cm) {cm.redo();}, | |
5533 | undoSelection: function(cm) {cm.undoSelection();}, | |
5534 | redoSelection: function(cm) {cm.redoSelection();}, | |
5535 | goDocStart: function(cm) {cm.extendSelection(Pos(cm.firstLine(), 0));}, | |
5536 | goDocEnd: function(cm) {cm.extendSelection(Pos(cm.lastLine()));}, | |
5537 | goLineStart: function(cm) { | |
5538 | cm.extendSelectionsBy(function(range) { return lineStart(cm, range.head.line); }, | |
5539 | {origin: "+move", bias: 1}); | |
5540 | }, | |
5541 | goLineStartSmart: function(cm) { | |
5542 | cm.extendSelectionsBy(function(range) { | |
5543 | return lineStartSmart(cm, range.head); | |
5544 | }, {origin: "+move", bias: 1}); | |
5545 | }, | |
5546 | goLineEnd: function(cm) { | |
5547 | cm.extendSelectionsBy(function(range) { return lineEnd(cm, range.head.line); }, | |
5548 | {origin: "+move", bias: -1}); | |
5549 | }, | |
5550 | goLineRight: function(cm) { | |
5551 | cm.extendSelectionsBy(function(range) { | |
5552 | var top = cm.charCoords(range.head, "div").top + 5; | |
5553 | return cm.coordsChar({left: cm.display.lineDiv.offsetWidth + 100, top: top}, "div"); | |
5554 | }, sel_move); | |
5555 | }, | |
5556 | goLineLeft: function(cm) { | |
5557 | cm.extendSelectionsBy(function(range) { | |
5558 | var top = cm.charCoords(range.head, "div").top + 5; | |
5559 | return cm.coordsChar({left: 0, top: top}, "div"); | |
5560 | }, sel_move); | |
5561 | }, | |
5562 | goLineLeftSmart: function(cm) { | |
5563 | cm.extendSelectionsBy(function(range) { | |
5564 | var top = cm.charCoords(range.head, "div").top + 5; | |
5565 | var pos = cm.coordsChar({left: 0, top: top}, "div"); | |
5566 | if (pos.ch < cm.getLine(pos.line).search(/\S/)) return lineStartSmart(cm, range.head); | |
5567 | return pos; | |
5568 | }, sel_move); | |
5569 | }, | |
5570 | goLineUp: function(cm) {cm.moveV(-1, "line");}, | |
5571 | goLineDown: function(cm) {cm.moveV(1, "line");}, | |
5572 | goPageUp: function(cm) {cm.moveV(-1, "page");}, | |
5573 | goPageDown: function(cm) {cm.moveV(1, "page");}, | |
5574 | goCharLeft: function(cm) {cm.moveH(-1, "char");}, | |
5575 | goCharRight: function(cm) {cm.moveH(1, "char");}, | |
5576 | goColumnLeft: function(cm) {cm.moveH(-1, "column");}, | |
5577 | goColumnRight: function(cm) {cm.moveH(1, "column");}, | |
5578 | goWordLeft: function(cm) {cm.moveH(-1, "word");}, | |
5579 | goGroupRight: function(cm) {cm.moveH(1, "group");}, | |
5580 | goGroupLeft: function(cm) {cm.moveH(-1, "group");}, | |
5581 | goWordRight: function(cm) {cm.moveH(1, "word");}, | |
5582 | delCharBefore: function(cm) {cm.deleteH(-1, "char");}, | |
5583 | delCharAfter: function(cm) {cm.deleteH(1, "char");}, | |
5584 | delWordBefore: function(cm) {cm.deleteH(-1, "word");}, | |
5585 | delWordAfter: function(cm) {cm.deleteH(1, "word");}, | |
5586 | delGroupBefore: function(cm) {cm.deleteH(-1, "group");}, | |
5587 | delGroupAfter: function(cm) {cm.deleteH(1, "group");}, | |
5588 | indentAuto: function(cm) {cm.indentSelection("smart");}, | |
5589 | indentMore: function(cm) {cm.indentSelection("add");}, | |
5590 | indentLess: function(cm) {cm.indentSelection("subtract");}, | |
5591 | insertTab: function(cm) {cm.replaceSelection("\t");}, | |
5592 | insertSoftTab: function(cm) { | |
5593 | var spaces = [], ranges = cm.listSelections(), tabSize = cm.options.tabSize; | |
5594 | for (var i = 0; i < ranges.length; i++) { | |
5595 | var pos = ranges[i].from(); | |
5596 | var col = countColumn(cm.getLine(pos.line), pos.ch, tabSize); | |
5597 | spaces.push(new Array(tabSize - col % tabSize + 1).join(" ")); | |
5598 | } | |
5599 | cm.replaceSelections(spaces); | |
5600 | }, | |
5601 | defaultTab: function(cm) { | |
5602 | if (cm.somethingSelected()) cm.indentSelection("add"); | |
5603 | else cm.execCommand("insertTab"); | |
5604 | }, | |
5605 | transposeChars: function(cm) { | |
5606 | runInOp(cm, function() { | |
5607 | var ranges = cm.listSelections(), newSel = []; | |
5608 | for (var i = 0; i < ranges.length; i++) { | |
5609 | var cur = ranges[i].head, line = getLine(cm.doc, cur.line).text; | |
5610 | if (line) { | |
5611 | if (cur.ch == line.length) cur = new Pos(cur.line, cur.ch - 1); | |
5612 | if (cur.ch > 0) { | |
5613 | cur = new Pos(cur.line, cur.ch + 1); | |
5614 | cm.replaceRange(line.charAt(cur.ch - 1) + line.charAt(cur.ch - 2), | |
5615 | Pos(cur.line, cur.ch - 2), cur, "+transpose"); | |
5616 | } else if (cur.line > cm.doc.first) { | |
5617 | var prev = getLine(cm.doc, cur.line - 1).text; | |
5618 | if (prev) | |
5619 | cm.replaceRange(line.charAt(0) + "\n" + prev.charAt(prev.length - 1), | |
5620 | Pos(cur.line - 1, prev.length - 1), Pos(cur.line, 1), "+transpose"); | |
5621 | } | |
5622 | } | |
5623 | newSel.push(new Range(cur, cur)); | |
5624 | } | |
5625 | cm.setSelections(newSel); | |
5626 | }); | |
5627 | }, | |
5628 | newlineAndIndent: function(cm) { | |
5629 | runInOp(cm, function() { | |
5630 | var len = cm.listSelections().length; | |
5631 | for (var i = 0; i < len; i++) { | |
5632 | var range = cm.listSelections()[i]; | |
5633 | cm.replaceRange("\n", range.anchor, range.head, "+input"); | |
5634 | cm.indentLine(range.from().line + 1, null, true); | |
5635 | ensureCursorVisible(cm); | |
5636 | } | |
5637 | }); | |
5638 | }, | |
5639 | toggleOverwrite: function(cm) {cm.toggleOverwrite();} | |
5640 | }; | |
5641 | ||
5642 | ||
5643 | // STANDARD KEYMAPS | |
5644 | ||
5645 | var keyMap = CodeMirror.keyMap = {}; | |
5646 | ||
5647 | keyMap.basic = { | |
5648 | "Left": "goCharLeft", "Right": "goCharRight", "Up": "goLineUp", "Down": "goLineDown", | |
5649 | "End": "goLineEnd", "Home": "goLineStartSmart", "PageUp": "goPageUp", "PageDown": "goPageDown", | |
5650 | "Delete": "delCharAfter", "Backspace": "delCharBefore", "Shift-Backspace": "delCharBefore", | |
5651 | "Tab": "defaultTab", "Shift-Tab": "indentAuto", | |
5652 | "Enter": "newlineAndIndent", "Insert": "toggleOverwrite", | |
5653 | "Esc": "singleSelection" | |
5654 | }; | |
5655 | // Note that the save and find-related commands aren't defined by | |
5656 | // default. User code or addons can define them. Unknown commands | |
5657 | // are simply ignored. | |
5658 | keyMap.pcDefault = { | |
5659 | "Ctrl-A": "selectAll", "Ctrl-D": "deleteLine", "Ctrl-Z": "undo", "Shift-Ctrl-Z": "redo", "Ctrl-Y": "redo", | |
5660 | "Ctrl-Home": "goDocStart", "Ctrl-End": "goDocEnd", "Ctrl-Up": "goLineUp", "Ctrl-Down": "goLineDown", | |
5661 | "Ctrl-Left": "goGroupLeft", "Ctrl-Right": "goGroupRight", "Alt-Left": "goLineStart", "Alt-Right": "goLineEnd", | |
5662 | "Ctrl-Backspace": "delGroupBefore", "Ctrl-Delete": "delGroupAfter", "Ctrl-S": "save", "Ctrl-F": "find", | |
5663 | "Ctrl-G": "findNext", "Shift-Ctrl-G": "findPrev", "Shift-Ctrl-F": "replace", "Shift-Ctrl-R": "replaceAll", | |
5664 | "Ctrl-[": "indentLess", "Ctrl-]": "indentMore", | |
5665 | "Ctrl-U": "undoSelection", "Shift-Ctrl-U": "redoSelection", "Alt-U": "redoSelection", | |
5666 | fallthrough: "basic" | |
5667 | }; | |
5668 | // Very basic readline/emacs-style bindings, which are standard on Mac. | |
5669 | keyMap.emacsy = { | |
5670 | "Ctrl-F": "goCharRight", "Ctrl-B": "goCharLeft", "Ctrl-P": "goLineUp", "Ctrl-N": "goLineDown", | |
5671 | "Alt-F": "goWordRight", "Alt-B": "goWordLeft", "Ctrl-A": "goLineStart", "Ctrl-E": "goLineEnd", | |
5672 | "Ctrl-V": "goPageDown", "Shift-Ctrl-V": "goPageUp", "Ctrl-D": "delCharAfter", "Ctrl-H": "delCharBefore", | |
5673 | "Alt-D": "delWordAfter", "Alt-Backspace": "delWordBefore", "Ctrl-K": "killLine", "Ctrl-T": "transposeChars" | |
5674 | }; | |
5675 | keyMap.macDefault = { | |
5676 | "Cmd-A": "selectAll", "Cmd-D": "deleteLine", "Cmd-Z": "undo", "Shift-Cmd-Z": "redo", "Cmd-Y": "redo", | |
5677 | "Cmd-Home": "goDocStart", "Cmd-Up": "goDocStart", "Cmd-End": "goDocEnd", "Cmd-Down": "goDocEnd", "Alt-Left": "goGroupLeft", | |
5678 | "Alt-Right": "goGroupRight", "Cmd-Left": "goLineLeft", "Cmd-Right": "goLineRight", "Alt-Backspace": "delGroupBefore", | |
5679 | "Ctrl-Alt-Backspace": "delGroupAfter", "Alt-Delete": "delGroupAfter", "Cmd-S": "save", "Cmd-F": "find", | |
5680 | "Cmd-G": "findNext", "Shift-Cmd-G": "findPrev", "Cmd-Alt-F": "replace", "Shift-Cmd-Alt-F": "replaceAll", | |
5681 | "Cmd-[": "indentLess", "Cmd-]": "indentMore", "Cmd-Backspace": "delWrappedLineLeft", "Cmd-Delete": "delWrappedLineRight", | |
5682 | "Cmd-U": "undoSelection", "Shift-Cmd-U": "redoSelection", "Ctrl-Up": "goDocStart", "Ctrl-Down": "goDocEnd", | |
5683 | fallthrough: ["basic", "emacsy"] | |
5684 | }; | |
5685 | keyMap["default"] = mac ? keyMap.macDefault : keyMap.pcDefault; | |
5686 | ||
5687 | // KEYMAP DISPATCH | |
5688 | ||
5689 | function normalizeKeyName(name) { | |
5690 | var parts = name.split(/-(?!$)/), name = parts[parts.length - 1]; | |
5691 | var alt, ctrl, shift, cmd; | |
5692 | for (var i = 0; i < parts.length - 1; i++) { | |
5693 | var mod = parts[i]; | |
5694 | if (/^(cmd|meta|m)$/i.test(mod)) cmd = true; | |
5695 | else if (/^a(lt)?$/i.test(mod)) alt = true; | |
5696 | else if (/^(c|ctrl|control)$/i.test(mod)) ctrl = true; | |
5697 | else if (/^s(hift)$/i.test(mod)) shift = true; | |
5698 | else throw new Error("Unrecognized modifier name: " + mod); | |
5699 | } | |
5700 | if (alt) name = "Alt-" + name; | |
5701 | if (ctrl) name = "Ctrl-" + name; | |
5702 | if (cmd) name = "Cmd-" + name; | |
5703 | if (shift) name = "Shift-" + name; | |
5704 | return name; | |
5705 | } | |
5706 | ||
5707 | // This is a kludge to keep keymaps mostly working as raw objects | |
5708 | // (backwards compatibility) while at the same time support features | |
5709 | // like normalization and multi-stroke key bindings. It compiles a | |
5710 | // new normalized keymap, and then updates the old object to reflect | |
5711 | // this. | |
5712 | CodeMirror.normalizeKeyMap = function(keymap) { | |
5713 | var copy = {}; | |
5714 | for (var keyname in keymap) if (keymap.hasOwnProperty(keyname)) { | |
5715 | var value = keymap[keyname]; | |
5716 | if (/^(name|fallthrough|(de|at)tach)$/.test(keyname)) continue; | |
5717 | if (value == "...") { delete keymap[keyname]; continue; } | |
5718 | ||
5719 | var keys = map(keyname.split(" "), normalizeKeyName); | |
5720 | for (var i = 0; i < keys.length; i++) { | |
5721 | var val, name; | |
5722 | if (i == keys.length - 1) { | |
5723 | name = keyname; | |
5724 | val = value; | |
5725 | } else { | |
5726 | name = keys.slice(0, i + 1).join(" "); | |
5727 | val = "..."; | |
5728 | } | |
5729 | var prev = copy[name]; | |
5730 | if (!prev) copy[name] = val; | |
5731 | else if (prev != val) throw new Error("Inconsistent bindings for " + name); | |
5732 | } | |
5733 | delete keymap[keyname]; | |
5734 | } | |
5735 | for (var prop in copy) keymap[prop] = copy[prop]; | |
5736 | return keymap; | |
5737 | }; | |
5738 | ||
5739 | var lookupKey = CodeMirror.lookupKey = function(key, map, handle, context) { | |
5740 | map = getKeyMap(map); | |
5741 | var found = map.call ? map.call(key, context) : map[key]; | |
5742 | if (found === false) return "nothing"; | |
5743 | if (found === "...") return "multi"; | |
5744 | if (found != null && handle(found)) return "handled"; | |
5745 | ||
5746 | if (map.fallthrough) { | |
5747 | if (Object.prototype.toString.call(map.fallthrough) != "[object Array]") | |
5748 | return lookupKey(key, map.fallthrough, handle, context); | |
5749 | for (var i = 0; i < map.fallthrough.length; i++) { | |
5750 | var result = lookupKey(key, map.fallthrough[i], handle, context); | |
5751 | if (result) return result; | |
5752 | } | |
5753 | } | |
5754 | }; | |
5755 | ||
5756 | // Modifier key presses don't count as 'real' key presses for the | |
5757 | // purpose of keymap fallthrough. | |
5758 | var isModifierKey = CodeMirror.isModifierKey = function(value) { | |
5759 | var name = typeof value == "string" ? value : keyNames[value.keyCode]; | |
5760 | return name == "Ctrl" || name == "Alt" || name == "Shift" || name == "Mod"; | |
5761 | }; | |
5762 | ||
5763 | // Look up the name of a key as indicated by an event object. | |
5764 | var keyName = CodeMirror.keyName = function(event, noShift) { | |
5765 | if (presto && event.keyCode == 34 && event["char"]) return false; | |
5766 | var base = keyNames[event.keyCode], name = base; | |
5767 | if (name == null || event.altGraphKey) return false; | |
5768 | if (event.altKey && base != "Alt") name = "Alt-" + name; | |
5769 | if ((flipCtrlCmd ? event.metaKey : event.ctrlKey) && base != "Ctrl") name = "Ctrl-" + name; | |
5770 | if ((flipCtrlCmd ? event.ctrlKey : event.metaKey) && base != "Cmd") name = "Cmd-" + name; | |
5771 | if (!noShift && event.shiftKey && base != "Shift") name = "Shift-" + name; | |
5772 | return name; | |
5773 | }; | |
5774 | ||
5775 | function getKeyMap(val) { | |
5776 | return typeof val == "string" ? keyMap[val] : val; | |
5777 | } | |
5778 | ||
5779 | // FROMTEXTAREA | |
5780 | ||
5781 | CodeMirror.fromTextArea = function(textarea, options) { | |
5782 | options = options ? copyObj(options) : {}; | |
5783 | options.value = textarea.value; | |
5784 | if (!options.tabindex && textarea.tabIndex) | |
5785 | options.tabindex = textarea.tabIndex; | |
5786 | if (!options.placeholder && textarea.placeholder) | |
5787 | options.placeholder = textarea.placeholder; | |
5788 | // Set autofocus to true if this textarea is focused, or if it has | |
5789 | // autofocus and no other element is focused. | |
5790 | if (options.autofocus == null) { | |
5791 | var hasFocus = activeElt(); | |
5792 | options.autofocus = hasFocus == textarea || | |
5793 | textarea.getAttribute("autofocus") != null && hasFocus == document.body; | |
5794 | } | |
5795 | ||
5796 | function save() {textarea.value = cm.getValue();} | |
5797 | if (textarea.form) { | |
5798 | on(textarea.form, "submit", save); | |
5799 | // Deplorable hack to make the submit method do the right thing. | |
5800 | if (!options.leaveSubmitMethodAlone) { | |
5801 | var form = textarea.form, realSubmit = form.submit; | |
5802 | try { | |
5803 | var wrappedSubmit = form.submit = function() { | |
5804 | save(); | |
5805 | form.submit = realSubmit; | |
5806 | form.submit(); | |
5807 | form.submit = wrappedSubmit; | |
5808 | }; | |
5809 | } catch(e) {} | |
5810 | } | |
5811 | } | |
5812 | ||
5813 | options.finishInit = function(cm) { | |
5814 | cm.save = save; | |
5815 | cm.getTextArea = function() { return textarea; }; | |
5816 | cm.toTextArea = function() { | |
5817 | cm.toTextArea = isNaN; // Prevent this from being ran twice | |
5818 | save(); | |
5819 | textarea.parentNode.removeChild(cm.getWrapperElement()); | |
5820 | textarea.style.display = ""; | |
5821 | if (textarea.form) { | |
5822 | off(textarea.form, "submit", save); | |
5823 | if (typeof textarea.form.submit == "function") | |
5824 | textarea.form.submit = realSubmit; | |
5825 | } | |
5826 | }; | |
5827 | }; | |
5828 | ||
5829 | textarea.style.display = "none"; | |
5830 | var cm = CodeMirror(function(node) { | |
5831 | textarea.parentNode.insertBefore(node, textarea.nextSibling); | |
5832 | }, options); | |
5833 | return cm; | |
5834 | }; | |
5835 | ||
5836 | // STRING STREAM | |
5837 | ||
5838 | // Fed to the mode parsers, provides helper functions to make | |
5839 | // parsers more succinct. | |
5840 | ||
5841 | var StringStream = CodeMirror.StringStream = function(string, tabSize) { | |
5842 | this.pos = this.start = 0; | |
5843 | this.string = string; | |
5844 | this.tabSize = tabSize || 8; | |
5845 | this.lastColumnPos = this.lastColumnValue = 0; | |
5846 | this.lineStart = 0; | |
5847 | }; | |
5848 | ||
5849 | StringStream.prototype = { | |
5850 | eol: function() {return this.pos >= this.string.length;}, | |
5851 | sol: function() {return this.pos == this.lineStart;}, | |
5852 | peek: function() {return this.string.charAt(this.pos) || undefined;}, | |
5853 | next: function() { | |
5854 | if (this.pos < this.string.length) | |
5855 | return this.string.charAt(this.pos++); | |
5856 | }, | |
5857 | eat: function(match) { | |
5858 | var ch = this.string.charAt(this.pos); | |
5859 | if (typeof match == "string") var ok = ch == match; | |
5860 | else var ok = ch && (match.test ? match.test(ch) : match(ch)); | |
5861 | if (ok) {++this.pos; return ch;} | |
5862 | }, | |
5863 | eatWhile: function(match) { | |
5864 | var start = this.pos; | |
5865 | while (this.eat(match)){} | |
5866 | return this.pos > start; | |
5867 | }, | |
5868 | eatSpace: function() { | |
5869 | var start = this.pos; | |
5870 | while (/[\s\u00a0]/.test(this.string.charAt(this.pos))) ++this.pos; | |
5871 | return this.pos > start; | |
5872 | }, | |
5873 | skipToEnd: function() {this.pos = this.string.length;}, | |
5874 | skipTo: function(ch) { | |
5875 | var found = this.string.indexOf(ch, this.pos); | |
5876 | if (found > -1) {this.pos = found; return true;} | |
5877 | }, | |
5878 | backUp: function(n) {this.pos -= n;}, | |
5879 | column: function() { | |
5880 | if (this.lastColumnPos < this.start) { | |
5881 | this.lastColumnValue = countColumn(this.string, this.start, this.tabSize, this.lastColumnPos, this.lastColumnValue); | |
5882 | this.lastColumnPos = this.start; | |
5883 | } | |
5884 | return this.lastColumnValue - (this.lineStart ? countColumn(this.string, this.lineStart, this.tabSize) : 0); | |
5885 | }, | |
5886 | indentation: function() { | |
5887 | return countColumn(this.string, null, this.tabSize) - | |
5888 | (this.lineStart ? countColumn(this.string, this.lineStart, this.tabSize) : 0); | |
5889 | }, | |
5890 | match: function(pattern, consume, caseInsensitive) { | |
5891 | if (typeof pattern == "string") { | |
5892 | var cased = function(str) {return caseInsensitive ? str.toLowerCase() : str;}; | |
5893 | var substr = this.string.substr(this.pos, pattern.length); | |
5894 | if (cased(substr) == cased(pattern)) { | |
5895 | if (consume !== false) this.pos += pattern.length; | |
5896 | return true; | |
5897 | } | |
5898 | } else { | |
5899 | var match = this.string.slice(this.pos).match(pattern); | |
5900 | if (match && match.index > 0) return null; | |
5901 | if (match && consume !== false) this.pos += match[0].length; | |
5902 | return match; | |
5903 | } | |
5904 | }, | |
5905 | current: function(){return this.string.slice(this.start, this.pos);}, | |
5906 | hideFirstChars: function(n, inner) { | |
5907 | this.lineStart += n; | |
5908 | try { return inner(); } | |
5909 | finally { this.lineStart -= n; } | |
5910 | } | |
5911 | }; | |
5912 | ||
5913 | // TEXTMARKERS | |
5914 | ||
5915 | // Created with markText and setBookmark methods. A TextMarker is a | |
5916 | // handle that can be used to clear or find a marked position in the | |
5917 | // document. Line objects hold arrays (markedSpans) containing | |
5918 | // {from, to, marker} object pointing to such marker objects, and | |
5919 | // indicating that such a marker is present on that line. Multiple | |
5920 | // lines may point to the same marker when it spans across lines. | |
5921 | // The spans will have null for their from/to properties when the | |
5922 | // marker continues beyond the start/end of the line. Markers have | |
5923 | // links back to the lines they currently touch. | |
5924 | ||
5925 | var nextMarkerId = 0; | |
5926 | ||
5927 | var TextMarker = CodeMirror.TextMarker = function(doc, type) { | |
5928 | this.lines = []; | |
5929 | this.type = type; | |
5930 | this.doc = doc; | |
5931 | this.id = ++nextMarkerId; | |
5932 | }; | |
5933 | eventMixin(TextMarker); | |
5934 | ||
5935 | // Clear the marker. | |
5936 | TextMarker.prototype.clear = function() { | |
5937 | if (this.explicitlyCleared) return; | |
5938 | var cm = this.doc.cm, withOp = cm && !cm.curOp; | |
5939 | if (withOp) startOperation(cm); | |
5940 | if (hasHandler(this, "clear")) { | |
5941 | var found = this.find(); | |
5942 | if (found) signalLater(this, "clear", found.from, found.to); | |
5943 | } | |
5944 | var min = null, max = null; | |
5945 | for (var i = 0; i < this.lines.length; ++i) { | |
5946 | var line = this.lines[i]; | |
5947 | var span = getMarkedSpanFor(line.markedSpans, this); | |
5948 | if (cm && !this.collapsed) regLineChange(cm, lineNo(line), "text"); | |
5949 | else if (cm) { | |
5950 | if (span.to != null) max = lineNo(line); | |
5951 | if (span.from != null) min = lineNo(line); | |
5952 | } | |
5953 | line.markedSpans = removeMarkedSpan(line.markedSpans, span); | |
5954 | if (span.from == null && this.collapsed && !lineIsHidden(this.doc, line) && cm) | |
5955 | updateLineHeight(line, textHeight(cm.display)); | |
5956 | } | |
5957 | if (cm && this.collapsed && !cm.options.lineWrapping) for (var i = 0; i < this.lines.length; ++i) { | |
5958 | var visual = visualLine(this.lines[i]), len = lineLength(visual); | |
5959 | if (len > cm.display.maxLineLength) { | |
5960 | cm.display.maxLine = visual; | |
5961 | cm.display.maxLineLength = len; | |
5962 | cm.display.maxLineChanged = true; | |
5963 | } | |
5964 | } | |
5965 | ||
5966 | if (min != null && cm && this.collapsed) regChange(cm, min, max + 1); | |
5967 | this.lines.length = 0; | |
5968 | this.explicitlyCleared = true; | |
5969 | if (this.atomic && this.doc.cantEdit) { | |
5970 | this.doc.cantEdit = false; | |
5971 | if (cm) reCheckSelection(cm.doc); | |
5972 | } | |
5973 | if (cm) signalLater(cm, "markerCleared", cm, this); | |
5974 | if (withOp) endOperation(cm); | |
5975 | if (this.parent) this.parent.clear(); | |
5976 | }; | |
5977 | ||
5978 | // Find the position of the marker in the document. Returns a {from, | |
5979 | // to} object by default. Side can be passed to get a specific side | |
5980 | // -- 0 (both), -1 (left), or 1 (right). When lineObj is true, the | |
5981 | // Pos objects returned contain a line object, rather than a line | |
5982 | // number (used to prevent looking up the same line twice). | |
5983 | TextMarker.prototype.find = function(side, lineObj) { | |
5984 | if (side == null && this.type == "bookmark") side = 1; | |
5985 | var from, to; | |
5986 | for (var i = 0; i < this.lines.length; ++i) { | |
5987 | var line = this.lines[i]; | |
5988 | var span = getMarkedSpanFor(line.markedSpans, this); | |
5989 | if (span.from != null) { | |
5990 | from = Pos(lineObj ? line : lineNo(line), span.from); | |
5991 | if (side == -1) return from; | |
5992 | } | |
5993 | if (span.to != null) { | |
5994 | to = Pos(lineObj ? line : lineNo(line), span.to); | |
5995 | if (side == 1) return to; | |
5996 | } | |
5997 | } | |
5998 | return from && {from: from, to: to}; | |
5999 | }; | |
6000 | ||
6001 | // Signals that the marker's widget changed, and surrounding layout | |
6002 | // should be recomputed. | |
6003 | TextMarker.prototype.changed = function() { | |
6004 | var pos = this.find(-1, true), widget = this, cm = this.doc.cm; | |
6005 | if (!pos || !cm) return; | |
6006 | runInOp(cm, function() { | |
6007 | var line = pos.line, lineN = lineNo(pos.line); | |
6008 | var view = findViewForLine(cm, lineN); | |
6009 | if (view) { | |
6010 | clearLineMeasurementCacheFor(view); | |
6011 | cm.curOp.selectionChanged = cm.curOp.forceUpdate = true; | |
6012 | } | |
6013 | cm.curOp.updateMaxLine = true; | |
6014 | if (!lineIsHidden(widget.doc, line) && widget.height != null) { | |
6015 | var oldHeight = widget.height; | |
6016 | widget.height = null; | |
6017 | var dHeight = widgetHeight(widget) - oldHeight; | |
6018 | if (dHeight) | |
6019 | updateLineHeight(line, line.height + dHeight); | |
6020 | } | |
6021 | }); | |
6022 | }; | |
6023 | ||
6024 | TextMarker.prototype.attachLine = function(line) { | |
6025 | if (!this.lines.length && this.doc.cm) { | |
6026 | var op = this.doc.cm.curOp; | |
6027 | if (!op.maybeHiddenMarkers || indexOf(op.maybeHiddenMarkers, this) == -1) | |
6028 | (op.maybeUnhiddenMarkers || (op.maybeUnhiddenMarkers = [])).push(this); | |
6029 | } | |
6030 | this.lines.push(line); | |
6031 | }; | |
6032 | TextMarker.prototype.detachLine = function(line) { | |
6033 | this.lines.splice(indexOf(this.lines, line), 1); | |
6034 | if (!this.lines.length && this.doc.cm) { | |
6035 | var op = this.doc.cm.curOp; | |
6036 | (op.maybeHiddenMarkers || (op.maybeHiddenMarkers = [])).push(this); | |
6037 | } | |
6038 | }; | |
6039 | ||
6040 | // Collapsed markers have unique ids, in order to be able to order | |
6041 | // them, which is needed for uniquely determining an outer marker | |
6042 | // when they overlap (they may nest, but not partially overlap). | |
6043 | var nextMarkerId = 0; | |
6044 | ||
6045 | // Create a marker, wire it up to the right lines, and | |
6046 | function markText(doc, from, to, options, type) { | |
6047 | // Shared markers (across linked documents) are handled separately | |
6048 | // (markTextShared will call out to this again, once per | |
6049 | // document). | |
6050 | if (options && options.shared) return markTextShared(doc, from, to, options, type); | |
6051 | // Ensure we are in an operation. | |
6052 | if (doc.cm && !doc.cm.curOp) return operation(doc.cm, markText)(doc, from, to, options, type); | |
6053 | ||
6054 | var marker = new TextMarker(doc, type), diff = cmp(from, to); | |
6055 | if (options) copyObj(options, marker, false); | |
6056 | // Don't connect empty markers unless clearWhenEmpty is false | |
6057 | if (diff > 0 || diff == 0 && marker.clearWhenEmpty !== false) | |
6058 | return marker; | |
6059 | if (marker.replacedWith) { | |
6060 | // Showing up as a widget implies collapsed (widget replaces text) | |
6061 | marker.collapsed = true; | |
6062 | marker.widgetNode = elt("span", [marker.replacedWith], "CodeMirror-widget"); | |
6063 | if (!options.handleMouseEvents) marker.widgetNode.setAttribute("cm-ignore-events", "true"); | |
6064 | if (options.insertLeft) marker.widgetNode.insertLeft = true; | |
6065 | } | |
6066 | if (marker.collapsed) { | |
6067 | if (conflictingCollapsedRange(doc, from.line, from, to, marker) || | |
6068 | from.line != to.line && conflictingCollapsedRange(doc, to.line, from, to, marker)) | |
6069 | throw new Error("Inserting collapsed marker partially overlapping an existing one"); | |
6070 | sawCollapsedSpans = true; | |
6071 | } | |
6072 | ||
6073 | if (marker.addToHistory) | |
6074 | addChangeToHistory(doc, {from: from, to: to, origin: "markText"}, doc.sel, NaN); | |
6075 | ||
6076 | var curLine = from.line, cm = doc.cm, updateMaxLine; | |
6077 | doc.iter(curLine, to.line + 1, function(line) { | |
6078 | if (cm && marker.collapsed && !cm.options.lineWrapping && visualLine(line) == cm.display.maxLine) | |
6079 | updateMaxLine = true; | |
6080 | if (marker.collapsed && curLine != from.line) updateLineHeight(line, 0); | |
6081 | addMarkedSpan(line, new MarkedSpan(marker, | |
6082 | curLine == from.line ? from.ch : null, | |
6083 | curLine == to.line ? to.ch : null)); | |
6084 | ++curLine; | |
6085 | }); | |
6086 | // lineIsHidden depends on the presence of the spans, so needs a second pass | |
6087 | if (marker.collapsed) doc.iter(from.line, to.line + 1, function(line) { | |
6088 | if (lineIsHidden(doc, line)) updateLineHeight(line, 0); | |
6089 | }); | |
6090 | ||
6091 | if (marker.clearOnEnter) on(marker, "beforeCursorEnter", function() { marker.clear(); }); | |
6092 | ||
6093 | if (marker.readOnly) { | |
6094 | sawReadOnlySpans = true; | |
6095 | if (doc.history.done.length || doc.history.undone.length) | |
6096 | doc.clearHistory(); | |
6097 | } | |
6098 | if (marker.collapsed) { | |
6099 | marker.id = ++nextMarkerId; | |
6100 | marker.atomic = true; | |
6101 | } | |
6102 | if (cm) { | |
6103 | // Sync editor state | |
6104 | if (updateMaxLine) cm.curOp.updateMaxLine = true; | |
6105 | if (marker.collapsed) | |
6106 | regChange(cm, from.line, to.line + 1); | |
6107 | else if (marker.className || marker.title || marker.startStyle || marker.endStyle || marker.css) | |
6108 | for (var i = from.line; i <= to.line; i++) regLineChange(cm, i, "text"); | |
6109 | if (marker.atomic) reCheckSelection(cm.doc); | |
6110 | signalLater(cm, "markerAdded", cm, marker); | |
6111 | } | |
6112 | return marker; | |
6113 | } | |
6114 | ||
6115 | // SHARED TEXTMARKERS | |
6116 | ||
6117 | // A shared marker spans multiple linked documents. It is | |
6118 | // implemented as a meta-marker-object controlling multiple normal | |
6119 | // markers. | |
6120 | var SharedTextMarker = CodeMirror.SharedTextMarker = function(markers, primary) { | |
6121 | this.markers = markers; | |
6122 | this.primary = primary; | |
6123 | for (var i = 0; i < markers.length; ++i) | |
6124 | markers[i].parent = this; | |
6125 | }; | |
6126 | eventMixin(SharedTextMarker); | |
6127 | ||
6128 | SharedTextMarker.prototype.clear = function() { | |
6129 | if (this.explicitlyCleared) return; | |
6130 | this.explicitlyCleared = true; | |
6131 | for (var i = 0; i < this.markers.length; ++i) | |
6132 | this.markers[i].clear(); | |
6133 | signalLater(this, "clear"); | |
6134 | }; | |
6135 | SharedTextMarker.prototype.find = function(side, lineObj) { | |
6136 | return this.primary.find(side, lineObj); | |
6137 | }; | |
6138 | ||
6139 | function markTextShared(doc, from, to, options, type) { | |
6140 | options = copyObj(options); | |
6141 | options.shared = false; | |
6142 | var markers = [markText(doc, from, to, options, type)], primary = markers[0]; | |
6143 | var widget = options.widgetNode; | |
6144 | linkedDocs(doc, function(doc) { | |
6145 | if (widget) options.widgetNode = widget.cloneNode(true); | |
6146 | markers.push(markText(doc, clipPos(doc, from), clipPos(doc, to), options, type)); | |
6147 | for (var i = 0; i < doc.linked.length; ++i) | |
6148 | if (doc.linked[i].isParent) return; | |
6149 | primary = lst(markers); | |
6150 | }); | |
6151 | return new SharedTextMarker(markers, primary); | |
6152 | } | |
6153 | ||
6154 | function findSharedMarkers(doc) { | |
6155 | return doc.findMarks(Pos(doc.first, 0), doc.clipPos(Pos(doc.lastLine())), | |
6156 | function(m) { return m.parent; }); | |
6157 | } | |
6158 | ||
6159 | function copySharedMarkers(doc, markers) { | |
6160 | for (var i = 0; i < markers.length; i++) { | |
6161 | var marker = markers[i], pos = marker.find(); | |
6162 | var mFrom = doc.clipPos(pos.from), mTo = doc.clipPos(pos.to); | |
6163 | if (cmp(mFrom, mTo)) { | |
6164 | var subMark = markText(doc, mFrom, mTo, marker.primary, marker.primary.type); | |
6165 | marker.markers.push(subMark); | |
6166 | subMark.parent = marker; | |
6167 | } | |
6168 | } | |
6169 | } | |
6170 | ||
6171 | function detachSharedMarkers(markers) { | |
6172 | for (var i = 0; i < markers.length; i++) { | |
6173 | var marker = markers[i], linked = [marker.primary.doc];; | |
6174 | linkedDocs(marker.primary.doc, function(d) { linked.push(d); }); | |
6175 | for (var j = 0; j < marker.markers.length; j++) { | |
6176 | var subMarker = marker.markers[j]; | |
6177 | if (indexOf(linked, subMarker.doc) == -1) { | |
6178 | subMarker.parent = null; | |
6179 | marker.markers.splice(j--, 1); | |
6180 | } | |
6181 | } | |
6182 | } | |
6183 | } | |
6184 | ||
6185 | // TEXTMARKER SPANS | |
6186 | ||
6187 | function MarkedSpan(marker, from, to) { | |
6188 | this.marker = marker; | |
6189 | this.from = from; this.to = to; | |
6190 | } | |
6191 | ||
6192 | // Search an array of spans for a span matching the given marker. | |
6193 | function getMarkedSpanFor(spans, marker) { | |
6194 | if (spans) for (var i = 0; i < spans.length; ++i) { | |
6195 | var span = spans[i]; | |
6196 | if (span.marker == marker) return span; | |
6197 | } | |
6198 | } | |
6199 | // Remove a span from an array, returning undefined if no spans are | |
6200 | // left (we don't store arrays for lines without spans). | |
6201 | function removeMarkedSpan(spans, span) { | |
6202 | for (var r, i = 0; i < spans.length; ++i) | |
6203 | if (spans[i] != span) (r || (r = [])).push(spans[i]); | |
6204 | return r; | |
6205 | } | |
6206 | // Add a span to a line. | |
6207 | function addMarkedSpan(line, span) { | |
6208 | line.markedSpans = line.markedSpans ? line.markedSpans.concat([span]) : [span]; | |
6209 | span.marker.attachLine(line); | |
6210 | } | |
6211 | ||
6212 | // Used for the algorithm that adjusts markers for a change in the | |
6213 | // document. These functions cut an array of spans at a given | |
6214 | // character position, returning an array of remaining chunks (or | |
6215 | // undefined if nothing remains). | |
6216 | function markedSpansBefore(old, startCh, isInsert) { | |
6217 | if (old) for (var i = 0, nw; i < old.length; ++i) { | |
6218 | var span = old[i], marker = span.marker; | |
6219 | var startsBefore = span.from == null || (marker.inclusiveLeft ? span.from <= startCh : span.from < startCh); | |
6220 | if (startsBefore || span.from == startCh && marker.type == "bookmark" && (!isInsert || !span.marker.insertLeft)) { | |
6221 | var endsAfter = span.to == null || (marker.inclusiveRight ? span.to >= startCh : span.to > startCh); | |
6222 | (nw || (nw = [])).push(new MarkedSpan(marker, span.from, endsAfter ? null : span.to)); | |
6223 | } | |
6224 | } | |
6225 | return nw; | |
6226 | } | |
6227 | function markedSpansAfter(old, endCh, isInsert) { | |
6228 | if (old) for (var i = 0, nw; i < old.length; ++i) { | |
6229 | var span = old[i], marker = span.marker; | |
6230 | var endsAfter = span.to == null || (marker.inclusiveRight ? span.to >= endCh : span.to > endCh); | |
6231 | if (endsAfter || span.from == endCh && marker.type == "bookmark" && (!isInsert || span.marker.insertLeft)) { | |
6232 | var startsBefore = span.from == null || (marker.inclusiveLeft ? span.from <= endCh : span.from < endCh); | |
6233 | (nw || (nw = [])).push(new MarkedSpan(marker, startsBefore ? null : span.from - endCh, | |
6234 | span.to == null ? null : span.to - endCh)); | |
6235 | } | |
6236 | } | |
6237 | return nw; | |
6238 | } | |
6239 | ||
6240 | // Given a change object, compute the new set of marker spans that | |
6241 | // cover the line in which the change took place. Removes spans | |
6242 | // entirely within the change, reconnects spans belonging to the | |
6243 | // same marker that appear on both sides of the change, and cuts off | |
6244 | // spans partially within the change. Returns an array of span | |
6245 | // arrays with one element for each line in (after) the change. | |
6246 | function stretchSpansOverChange(doc, change) { | |
6247 | if (change.full) return null; | |
6248 | var oldFirst = isLine(doc, change.from.line) && getLine(doc, change.from.line).markedSpans; | |
6249 | var oldLast = isLine(doc, change.to.line) && getLine(doc, change.to.line).markedSpans; | |
6250 | if (!oldFirst && !oldLast) return null; | |
6251 | ||
6252 | var startCh = change.from.ch, endCh = change.to.ch, isInsert = cmp(change.from, change.to) == 0; | |
6253 | // Get the spans that 'stick out' on both sides | |
6254 | var first = markedSpansBefore(oldFirst, startCh, isInsert); | |
6255 | var last = markedSpansAfter(oldLast, endCh, isInsert); | |
6256 | ||
6257 | // Next, merge those two ends | |
6258 | var sameLine = change.text.length == 1, offset = lst(change.text).length + (sameLine ? startCh : 0); | |
6259 | if (first) { | |
6260 | // Fix up .to properties of first | |
6261 | for (var i = 0; i < first.length; ++i) { | |
6262 | var span = first[i]; | |
6263 | if (span.to == null) { | |
6264 | var found = getMarkedSpanFor(last, span.marker); | |
6265 | if (!found) span.to = startCh; | |
6266 | else if (sameLine) span.to = found.to == null ? null : found.to + offset; | |
6267 | } | |
6268 | } | |
6269 | } | |
6270 | if (last) { | |
6271 | // Fix up .from in last (or move them into first in case of sameLine) | |
6272 | for (var i = 0; i < last.length; ++i) { | |
6273 | var span = last[i]; | |
6274 | if (span.to != null) span.to += offset; | |
6275 | if (span.from == null) { | |
6276 | var found = getMarkedSpanFor(first, span.marker); | |
6277 | if (!found) { | |
6278 | span.from = offset; | |
6279 | if (sameLine) (first || (first = [])).push(span); | |
6280 | } | |
6281 | } else { | |
6282 | span.from += offset; | |
6283 | if (sameLine) (first || (first = [])).push(span); | |
6284 | } | |
6285 | } | |
6286 | } | |
6287 | // Make sure we didn't create any zero-length spans | |
6288 | if (first) first = clearEmptySpans(first); | |
6289 | if (last && last != first) last = clearEmptySpans(last); | |
6290 | ||
6291 | var newMarkers = [first]; | |
6292 | if (!sameLine) { | |
6293 | // Fill gap with whole-line-spans | |
6294 | var gap = change.text.length - 2, gapMarkers; | |
6295 | if (gap > 0 && first) | |
6296 | for (var i = 0; i < first.length; ++i) | |
6297 | if (first[i].to == null) | |
6298 | (gapMarkers || (gapMarkers = [])).push(new MarkedSpan(first[i].marker, null, null)); | |
6299 | for (var i = 0; i < gap; ++i) | |
6300 | newMarkers.push(gapMarkers); | |
6301 | newMarkers.push(last); | |
6302 | } | |
6303 | return newMarkers; | |
6304 | } | |
6305 | ||
6306 | // Remove spans that are empty and don't have a clearWhenEmpty | |
6307 | // option of false. | |
6308 | function clearEmptySpans(spans) { | |
6309 | for (var i = 0; i < spans.length; ++i) { | |
6310 | var span = spans[i]; | |
6311 | if (span.from != null && span.from == span.to && span.marker.clearWhenEmpty !== false) | |
6312 | spans.splice(i--, 1); | |
6313 | } | |
6314 | if (!spans.length) return null; | |
6315 | return spans; | |
6316 | } | |
6317 | ||
6318 | // Used for un/re-doing changes from the history. Combines the | |
6319 | // result of computing the existing spans with the set of spans that | |
6320 | // existed in the history (so that deleting around a span and then | |
6321 | // undoing brings back the span). | |
6322 | function mergeOldSpans(doc, change) { | |
6323 | var old = getOldSpans(doc, change); | |
6324 | var stretched = stretchSpansOverChange(doc, change); | |
6325 | if (!old) return stretched; | |
6326 | if (!stretched) return old; | |
6327 | ||
6328 | for (var i = 0; i < old.length; ++i) { | |
6329 | var oldCur = old[i], stretchCur = stretched[i]; | |
6330 | if (oldCur && stretchCur) { | |
6331 | spans: for (var j = 0; j < stretchCur.length; ++j) { | |
6332 | var span = stretchCur[j]; | |
6333 | for (var k = 0; k < oldCur.length; ++k) | |
6334 | if (oldCur[k].marker == span.marker) continue spans; | |
6335 | oldCur.push(span); | |
6336 | } | |
6337 | } else if (stretchCur) { | |
6338 | old[i] = stretchCur; | |
6339 | } | |
6340 | } | |
6341 | return old; | |
6342 | } | |
6343 | ||
6344 | // Used to 'clip' out readOnly ranges when making a change. | |
6345 | function removeReadOnlyRanges(doc, from, to) { | |
6346 | var markers = null; | |
6347 | doc.iter(from.line, to.line + 1, function(line) { | |
6348 | if (line.markedSpans) for (var i = 0; i < line.markedSpans.length; ++i) { | |
6349 | var mark = line.markedSpans[i].marker; | |
6350 | if (mark.readOnly && (!markers || indexOf(markers, mark) == -1)) | |
6351 | (markers || (markers = [])).push(mark); | |
6352 | } | |
6353 | }); | |
6354 | if (!markers) return null; | |
6355 | var parts = [{from: from, to: to}]; | |
6356 | for (var i = 0; i < markers.length; ++i) { | |
6357 | var mk = markers[i], m = mk.find(0); | |
6358 | for (var j = 0; j < parts.length; ++j) { | |
6359 | var p = parts[j]; | |
6360 | if (cmp(p.to, m.from) < 0 || cmp(p.from, m.to) > 0) continue; | |
6361 | var newParts = [j, 1], dfrom = cmp(p.from, m.from), dto = cmp(p.to, m.to); | |
6362 | if (dfrom < 0 || !mk.inclusiveLeft && !dfrom) | |
6363 | newParts.push({from: p.from, to: m.from}); | |
6364 | if (dto > 0 || !mk.inclusiveRight && !dto) | |
6365 | newParts.push({from: m.to, to: p.to}); | |
6366 | parts.splice.apply(parts, newParts); | |
6367 | j += newParts.length - 1; | |
6368 | } | |
6369 | } | |
6370 | return parts; | |
6371 | } | |
6372 | ||
6373 | // Connect or disconnect spans from a line. | |
6374 | function detachMarkedSpans(line) { | |
6375 | var spans = line.markedSpans; | |
6376 | if (!spans) return; | |
6377 | for (var i = 0; i < spans.length; ++i) | |
6378 | spans[i].marker.detachLine(line); | |
6379 | line.markedSpans = null; | |
6380 | } | |
6381 | function attachMarkedSpans(line, spans) { | |
6382 | if (!spans) return; | |
6383 | for (var i = 0; i < spans.length; ++i) | |
6384 | spans[i].marker.attachLine(line); | |
6385 | line.markedSpans = spans; | |
6386 | } | |
6387 | ||
6388 | // Helpers used when computing which overlapping collapsed span | |
6389 | // counts as the larger one. | |
6390 | function extraLeft(marker) { return marker.inclusiveLeft ? -1 : 0; } | |
6391 | function extraRight(marker) { return marker.inclusiveRight ? 1 : 0; } | |
6392 | ||
6393 | // Returns a number indicating which of two overlapping collapsed | |
6394 | // spans is larger (and thus includes the other). Falls back to | |
6395 | // comparing ids when the spans cover exactly the same range. | |
6396 | function compareCollapsedMarkers(a, b) { | |
6397 | var lenDiff = a.lines.length - b.lines.length; | |
6398 | if (lenDiff != 0) return lenDiff; | |
6399 | var aPos = a.find(), bPos = b.find(); | |
6400 | var fromCmp = cmp(aPos.from, bPos.from) || extraLeft(a) - extraLeft(b); | |
6401 | if (fromCmp) return -fromCmp; | |
6402 | var toCmp = cmp(aPos.to, bPos.to) || extraRight(a) - extraRight(b); | |
6403 | if (toCmp) return toCmp; | |
6404 | return b.id - a.id; | |
6405 | } | |
6406 | ||
6407 | // Find out whether a line ends or starts in a collapsed span. If | |
6408 | // so, return the marker for that span. | |
6409 | function collapsedSpanAtSide(line, start) { | |
6410 | var sps = sawCollapsedSpans && line.markedSpans, found; | |
6411 | if (sps) for (var sp, i = 0; i < sps.length; ++i) { | |
6412 | sp = sps[i]; | |
6413 | if (sp.marker.collapsed && (start ? sp.from : sp.to) == null && | |
6414 | (!found || compareCollapsedMarkers(found, sp.marker) < 0)) | |
6415 | found = sp.marker; | |
6416 | } | |
6417 | return found; | |
6418 | } | |
6419 | function collapsedSpanAtStart(line) { return collapsedSpanAtSide(line, true); } | |
6420 | function collapsedSpanAtEnd(line) { return collapsedSpanAtSide(line, false); } | |
6421 | ||
6422 | // Test whether there exists a collapsed span that partially | |
6423 | // overlaps (covers the start or end, but not both) of a new span. | |
6424 | // Such overlap is not allowed. | |
6425 | function conflictingCollapsedRange(doc, lineNo, from, to, marker) { | |
6426 | var line = getLine(doc, lineNo); | |
6427 | var sps = sawCollapsedSpans && line.markedSpans; | |
6428 | if (sps) for (var i = 0; i < sps.length; ++i) { | |
6429 | var sp = sps[i]; | |
6430 | if (!sp.marker.collapsed) continue; | |
6431 | var found = sp.marker.find(0); | |
6432 | var fromCmp = cmp(found.from, from) || extraLeft(sp.marker) - extraLeft(marker); | |
6433 | var toCmp = cmp(found.to, to) || extraRight(sp.marker) - extraRight(marker); | |
6434 | if (fromCmp >= 0 && toCmp <= 0 || fromCmp <= 0 && toCmp >= 0) continue; | |
6435 | if (fromCmp <= 0 && (cmp(found.to, from) > 0 || (sp.marker.inclusiveRight && marker.inclusiveLeft)) || | |
6436 | fromCmp >= 0 && (cmp(found.from, to) < 0 || (sp.marker.inclusiveLeft && marker.inclusiveRight))) | |
6437 | return true; | |
6438 | } | |
6439 | } | |
6440 | ||
6441 | // A visual line is a line as drawn on the screen. Folding, for | |
6442 | // example, can cause multiple logical lines to appear on the same | |
6443 | // visual line. This finds the start of the visual line that the | |
6444 | // given line is part of (usually that is the line itself). | |
6445 | function visualLine(line) { | |
6446 | var merged; | |
6447 | while (merged = collapsedSpanAtStart(line)) | |
6448 | line = merged.find(-1, true).line; | |
6449 | return line; | |
6450 | } | |
6451 | ||
6452 | // Returns an array of logical lines that continue the visual line | |
6453 | // started by the argument, or undefined if there are no such lines. | |
6454 | function visualLineContinued(line) { | |
6455 | var merged, lines; | |
6456 | while (merged = collapsedSpanAtEnd(line)) { | |
6457 | line = merged.find(1, true).line; | |
6458 | (lines || (lines = [])).push(line); | |
6459 | } | |
6460 | return lines; | |
6461 | } | |
6462 | ||
6463 | // Get the line number of the start of the visual line that the | |
6464 | // given line number is part of. | |
6465 | function visualLineNo(doc, lineN) { | |
6466 | var line = getLine(doc, lineN), vis = visualLine(line); | |
6467 | if (line == vis) return lineN; | |
6468 | return lineNo(vis); | |
6469 | } | |
6470 | // Get the line number of the start of the next visual line after | |
6471 | // the given line. | |
6472 | function visualLineEndNo(doc, lineN) { | |
6473 | if (lineN > doc.lastLine()) return lineN; | |
6474 | var line = getLine(doc, lineN), merged; | |
6475 | if (!lineIsHidden(doc, line)) return lineN; | |
6476 | while (merged = collapsedSpanAtEnd(line)) | |
6477 | line = merged.find(1, true).line; | |
6478 | return lineNo(line) + 1; | |
6479 | } | |
6480 | ||
6481 | // Compute whether a line is hidden. Lines count as hidden when they | |
6482 | // are part of a visual line that starts with another line, or when | |
6483 | // they are entirely covered by collapsed, non-widget span. | |
6484 | function lineIsHidden(doc, line) { | |
6485 | var sps = sawCollapsedSpans && line.markedSpans; | |
6486 | if (sps) for (var sp, i = 0; i < sps.length; ++i) { | |
6487 | sp = sps[i]; | |
6488 | if (!sp.marker.collapsed) continue; | |
6489 | if (sp.from == null) return true; | |
6490 | if (sp.marker.widgetNode) continue; | |
6491 | if (sp.from == 0 && sp.marker.inclusiveLeft && lineIsHiddenInner(doc, line, sp)) | |
6492 | return true; | |
6493 | } | |
6494 | } | |
6495 | function lineIsHiddenInner(doc, line, span) { | |
6496 | if (span.to == null) { | |
6497 | var end = span.marker.find(1, true); | |
6498 | return lineIsHiddenInner(doc, end.line, getMarkedSpanFor(end.line.markedSpans, span.marker)); | |
6499 | } | |
6500 | if (span.marker.inclusiveRight && span.to == line.text.length) | |
6501 | return true; | |
6502 | for (var sp, i = 0; i < line.markedSpans.length; ++i) { | |
6503 | sp = line.markedSpans[i]; | |
6504 | if (sp.marker.collapsed && !sp.marker.widgetNode && sp.from == span.to && | |
6505 | (sp.to == null || sp.to != span.from) && | |
6506 | (sp.marker.inclusiveLeft || span.marker.inclusiveRight) && | |
6507 | lineIsHiddenInner(doc, line, sp)) return true; | |
6508 | } | |
6509 | } | |
6510 | ||
6511 | // LINE WIDGETS | |
6512 | ||
6513 | // Line widgets are block elements displayed above or below a line. | |
6514 | ||
6515 | var LineWidget = CodeMirror.LineWidget = function(doc, node, options) { | |
6516 | if (options) for (var opt in options) if (options.hasOwnProperty(opt)) | |
6517 | this[opt] = options[opt]; | |
6518 | this.doc = doc; | |
6519 | this.node = node; | |
6520 | }; | |
6521 | eventMixin(LineWidget); | |
6522 | ||
6523 | function adjustScrollWhenAboveVisible(cm, line, diff) { | |
6524 | if (heightAtLine(line) < ((cm.curOp && cm.curOp.scrollTop) || cm.doc.scrollTop)) | |
6525 | addToScrollPos(cm, null, diff); | |
6526 | } | |
6527 | ||
6528 | LineWidget.prototype.clear = function() { | |
6529 | var cm = this.doc.cm, ws = this.line.widgets, line = this.line, no = lineNo(line); | |
6530 | if (no == null || !ws) return; | |
6531 | for (var i = 0; i < ws.length; ++i) if (ws[i] == this) ws.splice(i--, 1); | |
6532 | if (!ws.length) line.widgets = null; | |
6533 | var height = widgetHeight(this); | |
6534 | updateLineHeight(line, Math.max(0, line.height - height)); | |
6535 | if (cm) runInOp(cm, function() { | |
6536 | adjustScrollWhenAboveVisible(cm, line, -height); | |
6537 | regLineChange(cm, no, "widget"); | |
6538 | }); | |
6539 | }; | |
6540 | LineWidget.prototype.changed = function() { | |
6541 | var oldH = this.height, cm = this.doc.cm, line = this.line; | |
6542 | this.height = null; | |
6543 | var diff = widgetHeight(this) - oldH; | |
6544 | if (!diff) return; | |
6545 | updateLineHeight(line, line.height + diff); | |
6546 | if (cm) runInOp(cm, function() { | |
6547 | cm.curOp.forceUpdate = true; | |
6548 | adjustScrollWhenAboveVisible(cm, line, diff); | |
6549 | }); | |
6550 | }; | |
6551 | ||
6552 | function widgetHeight(widget) { | |
6553 | if (widget.height != null) return widget.height; | |
6554 | var cm = widget.doc.cm; | |
6555 | if (!cm) return 0; | |
6556 | if (!contains(document.body, widget.node)) { | |
6557 | var parentStyle = "position: relative;"; | |
6558 | if (widget.coverGutter) | |
6559 | parentStyle += "margin-left: -" + cm.display.gutters.offsetWidth + "px;"; | |
6560 | if (widget.noHScroll) | |
6561 | parentStyle += "width: " + cm.display.wrapper.clientWidth + "px;"; | |
6562 | removeChildrenAndAdd(cm.display.measure, elt("div", [widget.node], null, parentStyle)); | |
6563 | } | |
6564 | return widget.height = widget.node.offsetHeight; | |
6565 | } | |
6566 | ||
6567 | function addLineWidget(doc, handle, node, options) { | |
6568 | var widget = new LineWidget(doc, node, options); | |
6569 | var cm = doc.cm; | |
6570 | if (cm && widget.noHScroll) cm.display.alignWidgets = true; | |
6571 | changeLine(doc, handle, "widget", function(line) { | |
6572 | var widgets = line.widgets || (line.widgets = []); | |
6573 | if (widget.insertAt == null) widgets.push(widget); | |
6574 | else widgets.splice(Math.min(widgets.length - 1, Math.max(0, widget.insertAt)), 0, widget); | |
6575 | widget.line = line; | |
6576 | if (cm && !lineIsHidden(doc, line)) { | |
6577 | var aboveVisible = heightAtLine(line) < doc.scrollTop; | |
6578 | updateLineHeight(line, line.height + widgetHeight(widget)); | |
6579 | if (aboveVisible) addToScrollPos(cm, null, widget.height); | |
6580 | cm.curOp.forceUpdate = true; | |
6581 | } | |
6582 | return true; | |
6583 | }); | |
6584 | return widget; | |
6585 | } | |
6586 | ||
6587 | // LINE DATA STRUCTURE | |
6588 | ||
6589 | // Line objects. These hold state related to a line, including | |
6590 | // highlighting info (the styles array). | |
6591 | var Line = CodeMirror.Line = function(text, markedSpans, estimateHeight) { | |
6592 | this.text = text; | |
6593 | attachMarkedSpans(this, markedSpans); | |
6594 | this.height = estimateHeight ? estimateHeight(this) : 1; | |
6595 | }; | |
6596 | eventMixin(Line); | |
6597 | Line.prototype.lineNo = function() { return lineNo(this); }; | |
6598 | ||
6599 | // Change the content (text, markers) of a line. Automatically | |
6600 | // invalidates cached information and tries to re-estimate the | |
6601 | // line's height. | |
6602 | function updateLine(line, text, markedSpans, estimateHeight) { | |
6603 | line.text = text; | |
6604 | if (line.stateAfter) line.stateAfter = null; | |
6605 | if (line.styles) line.styles = null; | |
6606 | if (line.order != null) line.order = null; | |
6607 | detachMarkedSpans(line); | |
6608 | attachMarkedSpans(line, markedSpans); | |
6609 | var estHeight = estimateHeight ? estimateHeight(line) : 1; | |
6610 | if (estHeight != line.height) updateLineHeight(line, estHeight); | |
6611 | } | |
6612 | ||
6613 | // Detach a line from the document tree and its markers. | |
6614 | function cleanUpLine(line) { | |
6615 | line.parent = null; | |
6616 | detachMarkedSpans(line); | |
6617 | } | |
6618 | ||
6619 | function extractLineClasses(type, output) { | |
6620 | if (type) for (;;) { | |
6621 | var lineClass = type.match(/(?:^|\s+)line-(background-)?(\S+)/); | |
6622 | if (!lineClass) break; | |
6623 | type = type.slice(0, lineClass.index) + type.slice(lineClass.index + lineClass[0].length); | |
6624 | var prop = lineClass[1] ? "bgClass" : "textClass"; | |
6625 | if (output[prop] == null) | |
6626 | output[prop] = lineClass[2]; | |
6627 | else if (!(new RegExp("(?:^|\s)" + lineClass[2] + "(?:$|\s)")).test(output[prop])) | |
6628 | output[prop] += " " + lineClass[2]; | |
6629 | } | |
6630 | return type; | |
6631 | } | |
6632 | ||
6633 | function callBlankLine(mode, state) { | |
6634 | if (mode.blankLine) return mode.blankLine(state); | |
6635 | if (!mode.innerMode) return; | |
6636 | var inner = CodeMirror.innerMode(mode, state); | |
6637 | if (inner.mode.blankLine) return inner.mode.blankLine(inner.state); | |
6638 | } | |
6639 | ||
6640 | function readToken(mode, stream, state, inner) { | |
6641 | for (var i = 0; i < 10; i++) { | |
6642 | if (inner) inner[0] = CodeMirror.innerMode(mode, state).mode; | |
6643 | var style = mode.token(stream, state); | |
6644 | if (stream.pos > stream.start) return style; | |
6645 | } | |
6646 | throw new Error("Mode " + mode.name + " failed to advance stream."); | |
6647 | } | |
6648 | ||
6649 | // Utility for getTokenAt and getLineTokens | |
6650 | function takeToken(cm, pos, precise, asArray) { | |
6651 | function getObj(copy) { | |
6652 | return {start: stream.start, end: stream.pos, | |
6653 | string: stream.current(), | |
6654 | type: style || null, | |
6655 | state: copy ? copyState(doc.mode, state) : state}; | |
6656 | } | |
6657 | ||
6658 | var doc = cm.doc, mode = doc.mode, style; | |
6659 | pos = clipPos(doc, pos); | |
6660 | var line = getLine(doc, pos.line), state = getStateBefore(cm, pos.line, precise); | |
6661 | var stream = new StringStream(line.text, cm.options.tabSize), tokens; | |
6662 | if (asArray) tokens = []; | |
6663 | while ((asArray || stream.pos < pos.ch) && !stream.eol()) { | |
6664 | stream.start = stream.pos; | |
6665 | style = readToken(mode, stream, state); | |
6666 | if (asArray) tokens.push(getObj(true)); | |
6667 | } | |
6668 | return asArray ? tokens : getObj(); | |
6669 | } | |
6670 | ||
6671 | // Run the given mode's parser over a line, calling f for each token. | |
6672 | function runMode(cm, text, mode, state, f, lineClasses, forceToEnd) { | |
6673 | var flattenSpans = mode.flattenSpans; | |
6674 | if (flattenSpans == null) flattenSpans = cm.options.flattenSpans; | |
6675 | var curStart = 0, curStyle = null; | |
6676 | var stream = new StringStream(text, cm.options.tabSize), style; | |
6677 | var inner = cm.options.addModeClass && [null]; | |
6678 | if (text == "") extractLineClasses(callBlankLine(mode, state), lineClasses); | |
6679 | while (!stream.eol()) { | |
6680 | if (stream.pos > cm.options.maxHighlightLength) { | |
6681 | flattenSpans = false; | |
6682 | if (forceToEnd) processLine(cm, text, state, stream.pos); | |
6683 | stream.pos = text.length; | |
6684 | style = null; | |
6685 | } else { | |
6686 | style = extractLineClasses(readToken(mode, stream, state, inner), lineClasses); | |
6687 | } | |
6688 | if (inner) { | |
6689 | var mName = inner[0].name; | |
6690 | if (mName) style = "m-" + (style ? mName + " " + style : mName); | |
6691 | } | |
6692 | if (!flattenSpans || curStyle != style) { | |
6693 | while (curStart < stream.start) { | |
6694 | curStart = Math.min(stream.start, curStart + 50000); | |
6695 | f(curStart, curStyle); | |
6696 | } | |
6697 | curStyle = style; | |
6698 | } | |
6699 | stream.start = stream.pos; | |
6700 | } | |
6701 | while (curStart < stream.pos) { | |
6702 | // Webkit seems to refuse to render text nodes longer than 57444 characters | |
6703 | var pos = Math.min(stream.pos, curStart + 50000); | |
6704 | f(pos, curStyle); | |
6705 | curStart = pos; | |
6706 | } | |
6707 | } | |
6708 | ||
6709 | // Compute a style array (an array starting with a mode generation | |
6710 | // -- for invalidation -- followed by pairs of end positions and | |
6711 | // style strings), which is used to highlight the tokens on the | |
6712 | // line. | |
6713 | function highlightLine(cm, line, state, forceToEnd) { | |
6714 | // A styles array always starts with a number identifying the | |
6715 | // mode/overlays that it is based on (for easy invalidation). | |
6716 | var st = [cm.state.modeGen], lineClasses = {}; | |
6717 | // Compute the base array of styles | |
6718 | runMode(cm, line.text, cm.doc.mode, state, function(end, style) { | |
6719 | st.push(end, style); | |
6720 | }, lineClasses, forceToEnd); | |
6721 | ||
6722 | // Run overlays, adjust style array. | |
6723 | for (var o = 0; o < cm.state.overlays.length; ++o) { | |
6724 | var overlay = cm.state.overlays[o], i = 1, at = 0; | |
6725 | runMode(cm, line.text, overlay.mode, true, function(end, style) { | |
6726 | var start = i; | |
6727 | // Ensure there's a token end at the current position, and that i points at it | |
6728 | while (at < end) { | |
6729 | var i_end = st[i]; | |
6730 | if (i_end > end) | |
6731 | st.splice(i, 1, end, st[i+1], i_end); | |
6732 | i += 2; | |
6733 | at = Math.min(end, i_end); | |
6734 | } | |
6735 | if (!style) return; | |
6736 | if (overlay.opaque) { | |
6737 | st.splice(start, i - start, end, "cm-overlay " + style); | |
6738 | i = start + 2; | |
6739 | } else { | |
6740 | for (; start < i; start += 2) { | |
6741 | var cur = st[start+1]; | |
6742 | st[start+1] = (cur ? cur + " " : "") + "cm-overlay " + style; | |
6743 | } | |
6744 | } | |
6745 | }, lineClasses); | |
6746 | } | |
6747 | ||
6748 | return {styles: st, classes: lineClasses.bgClass || lineClasses.textClass ? lineClasses : null}; | |
6749 | } | |
6750 | ||
6751 | function getLineStyles(cm, line, updateFrontier) { | |
6752 | if (!line.styles || line.styles[0] != cm.state.modeGen) { | |
6753 | var result = highlightLine(cm, line, line.stateAfter = getStateBefore(cm, lineNo(line))); | |
6754 | line.styles = result.styles; | |
6755 | if (result.classes) line.styleClasses = result.classes; | |
6756 | else if (line.styleClasses) line.styleClasses = null; | |
6757 | if (updateFrontier === cm.doc.frontier) cm.doc.frontier++; | |
6758 | } | |
6759 | return line.styles; | |
6760 | } | |
6761 | ||
6762 | // Lightweight form of highlight -- proceed over this line and | |
6763 | // update state, but don't save a style array. Used for lines that | |
6764 | // aren't currently visible. | |
6765 | function processLine(cm, text, state, startAt) { | |
6766 | var mode = cm.doc.mode; | |
6767 | var stream = new StringStream(text, cm.options.tabSize); | |
6768 | stream.start = stream.pos = startAt || 0; | |
6769 | if (text == "") callBlankLine(mode, state); | |
6770 | while (!stream.eol() && stream.pos <= cm.options.maxHighlightLength) { | |
6771 | readToken(mode, stream, state); | |
6772 | stream.start = stream.pos; | |
6773 | } | |
6774 | } | |
6775 | ||
6776 | // Convert a style as returned by a mode (either null, or a string | |
6777 | // containing one or more styles) to a CSS style. This is cached, | |
6778 | // and also looks for line-wide styles. | |
6779 | var styleToClassCache = {}, styleToClassCacheWithMode = {}; | |
6780 | function interpretTokenStyle(style, options) { | |
6781 | if (!style || /^\s*$/.test(style)) return null; | |
6782 | var cache = options.addModeClass ? styleToClassCacheWithMode : styleToClassCache; | |
6783 | return cache[style] || | |
6784 | (cache[style] = style.replace(/\S+/g, "cm-$&")); | |
6785 | } | |
6786 | ||
6787 | // Render the DOM representation of the text of a line. Also builds | |
6788 | // up a 'line map', which points at the DOM nodes that represent | |
6789 | // specific stretches of text, and is used by the measuring code. | |
6790 | // The returned object contains the DOM node, this map, and | |
6791 | // information about line-wide styles that were set by the mode. | |
6792 | function buildLineContent(cm, lineView) { | |
6793 | // The padding-right forces the element to have a 'border', which | |
6794 | // is needed on Webkit to be able to get line-level bounding | |
6795 | // rectangles for it (in measureChar). | |
6796 | var content = elt("span", null, null, webkit ? "padding-right: .1px" : null); | |
6797 | var builder = {pre: elt("pre", [content]), content: content, | |
6798 | col: 0, pos: 0, cm: cm, | |
6799 | splitSpaces: (ie || webkit) && cm.getOption("lineWrapping")}; | |
6800 | lineView.measure = {}; | |
6801 | ||
6802 | // Iterate over the logical lines that make up this visual line. | |
6803 | for (var i = 0; i <= (lineView.rest ? lineView.rest.length : 0); i++) { | |
6804 | var line = i ? lineView.rest[i - 1] : lineView.line, order; | |
6805 | builder.pos = 0; | |
6806 | builder.addToken = buildToken; | |
6807 | // Optionally wire in some hacks into the token-rendering | |
6808 | // algorithm, to deal with browser quirks. | |
6809 | if (hasBadBidiRects(cm.display.measure) && (order = getOrder(line))) | |
6810 | builder.addToken = buildTokenBadBidi(builder.addToken, order); | |
6811 | builder.map = []; | |
6812 | var allowFrontierUpdate = lineView != cm.display.externalMeasured && lineNo(line); | |
6813 | insertLineContent(line, builder, getLineStyles(cm, line, allowFrontierUpdate)); | |
6814 | if (line.styleClasses) { | |
6815 | if (line.styleClasses.bgClass) | |
6816 | builder.bgClass = joinClasses(line.styleClasses.bgClass, builder.bgClass || ""); | |
6817 | if (line.styleClasses.textClass) | |
6818 | builder.textClass = joinClasses(line.styleClasses.textClass, builder.textClass || ""); | |
6819 | } | |
6820 | ||
6821 | // Ensure at least a single node is present, for measuring. | |
6822 | if (builder.map.length == 0) | |
6823 | builder.map.push(0, 0, builder.content.appendChild(zeroWidthElement(cm.display.measure))); | |
6824 | ||
6825 | // Store the map and a cache object for the current logical line | |
6826 | if (i == 0) { | |
6827 | lineView.measure.map = builder.map; | |
6828 | lineView.measure.cache = {}; | |
6829 | } else { | |
6830 | (lineView.measure.maps || (lineView.measure.maps = [])).push(builder.map); | |
6831 | (lineView.measure.caches || (lineView.measure.caches = [])).push({}); | |
6832 | } | |
6833 | } | |
6834 | ||
6835 | // See issue #2901 | |
6836 | if (webkit && /\bcm-tab\b/.test(builder.content.lastChild.className)) | |
6837 | builder.content.className = "cm-tab-wrap-hack"; | |
6838 | ||
6839 | signal(cm, "renderLine", cm, lineView.line, builder.pre); | |
6840 | if (builder.pre.className) | |
6841 | builder.textClass = joinClasses(builder.pre.className, builder.textClass || ""); | |
6842 | ||
6843 | return builder; | |
6844 | } | |
6845 | ||
6846 | function defaultSpecialCharPlaceholder(ch) { | |
6847 | var token = elt("span", "\u2022", "cm-invalidchar"); | |
6848 | token.title = "\\u" + ch.charCodeAt(0).toString(16); | |
6849 | token.setAttribute("aria-label", token.title); | |
6850 | return token; | |
6851 | } | |
6852 | ||
6853 | // Build up the DOM representation for a single token, and add it to | |
6854 | // the line map. Takes care to render special characters separately. | |
6855 | function buildToken(builder, text, style, startStyle, endStyle, title, css) { | |
6856 | if (!text) return; | |
6857 | var displayText = builder.splitSpaces ? text.replace(/ {3,}/g, splitSpaces) : text; | |
6858 | var special = builder.cm.state.specialChars, mustWrap = false; | |
6859 | if (!special.test(text)) { | |
6860 | builder.col += text.length; | |
6861 | var content = document.createTextNode(displayText); | |
6862 | builder.map.push(builder.pos, builder.pos + text.length, content); | |
6863 | if (ie && ie_version < 9) mustWrap = true; | |
6864 | builder.pos += text.length; | |
6865 | } else { | |
6866 | var content = document.createDocumentFragment(), pos = 0; | |
6867 | while (true) { | |
6868 | special.lastIndex = pos; | |
6869 | var m = special.exec(text); | |
6870 | var skipped = m ? m.index - pos : text.length - pos; | |
6871 | if (skipped) { | |
6872 | var txt = document.createTextNode(displayText.slice(pos, pos + skipped)); | |
6873 | if (ie && ie_version < 9) content.appendChild(elt("span", [txt])); | |
6874 | else content.appendChild(txt); | |
6875 | builder.map.push(builder.pos, builder.pos + skipped, txt); | |
6876 | builder.col += skipped; | |
6877 | builder.pos += skipped; | |
6878 | } | |
6879 | if (!m) break; | |
6880 | pos += skipped + 1; | |
6881 | if (m[0] == "\t") { | |
6882 | var tabSize = builder.cm.options.tabSize, tabWidth = tabSize - builder.col % tabSize; | |
6883 | var txt = content.appendChild(elt("span", spaceStr(tabWidth), "cm-tab")); | |
6884 | txt.setAttribute("role", "presentation"); | |
6885 | txt.setAttribute("cm-text", "\t"); | |
6886 | builder.col += tabWidth; | |
6887 | } else { | |
6888 | var txt = builder.cm.options.specialCharPlaceholder(m[0]); | |
6889 | txt.setAttribute("cm-text", m[0]); | |
6890 | if (ie && ie_version < 9) content.appendChild(elt("span", [txt])); | |
6891 | else content.appendChild(txt); | |
6892 | builder.col += 1; | |
6893 | } | |
6894 | builder.map.push(builder.pos, builder.pos + 1, txt); | |
6895 | builder.pos++; | |
6896 | } | |
6897 | } | |
6898 | if (style || startStyle || endStyle || mustWrap || css) { | |
6899 | var fullStyle = style || ""; | |
6900 | if (startStyle) fullStyle += startStyle; | |
6901 | if (endStyle) fullStyle += endStyle; | |
6902 | var token = elt("span", [content], fullStyle, css); | |
6903 | if (title) token.title = title; | |
6904 | return builder.content.appendChild(token); | |
6905 | } | |
6906 | builder.content.appendChild(content); | |
6907 | } | |
6908 | ||
6909 | function splitSpaces(old) { | |
6910 | var out = " "; | |
6911 | for (var i = 0; i < old.length - 2; ++i) out += i % 2 ? " " : "\u00a0"; | |
6912 | out += " "; | |
6913 | return out; | |
6914 | } | |
6915 | ||
6916 | // Work around nonsense dimensions being reported for stretches of | |
6917 | // right-to-left text. | |
6918 | function buildTokenBadBidi(inner, order) { | |
6919 | return function(builder, text, style, startStyle, endStyle, title, css) { | |
6920 | style = style ? style + " cm-force-border" : "cm-force-border"; | |
6921 | var start = builder.pos, end = start + text.length; | |
6922 | for (;;) { | |
6923 | // Find the part that overlaps with the start of this text | |
6924 | for (var i = 0; i < order.length; i++) { | |
6925 | var part = order[i]; | |
6926 | if (part.to > start && part.from <= start) break; | |
6927 | } | |
6928 | if (part.to >= end) return inner(builder, text, style, startStyle, endStyle, title, css); | |
6929 | inner(builder, text.slice(0, part.to - start), style, startStyle, null, title, css); | |
6930 | startStyle = null; | |
6931 | text = text.slice(part.to - start); | |
6932 | start = part.to; | |
6933 | } | |
6934 | }; | |
6935 | } | |
6936 | ||
6937 | function buildCollapsedSpan(builder, size, marker, ignoreWidget) { | |
6938 | var widget = !ignoreWidget && marker.widgetNode; | |
6939 | if (widget) builder.map.push(builder.pos, builder.pos + size, widget); | |
6940 | if (!ignoreWidget && builder.cm.display.input.needsContentAttribute) { | |
6941 | if (!widget) | |
6942 | widget = builder.content.appendChild(document.createElement("span")); | |
6943 | widget.setAttribute("cm-marker", marker.id); | |
6944 | } | |
6945 | if (widget) { | |
6946 | builder.cm.display.input.setUneditable(widget); | |
6947 | builder.content.appendChild(widget); | |
6948 | } | |
6949 | builder.pos += size; | |
6950 | } | |
6951 | ||
6952 | // Outputs a number of spans to make up a line, taking highlighting | |
6953 | // and marked text into account. | |
6954 | function insertLineContent(line, builder, styles) { | |
6955 | var spans = line.markedSpans, allText = line.text, at = 0; | |
6956 | if (!spans) { | |
6957 | for (var i = 1; i < styles.length; i+=2) | |
6958 | builder.addToken(builder, allText.slice(at, at = styles[i]), interpretTokenStyle(styles[i+1], builder.cm.options)); | |
6959 | return; | |
6960 | } | |
6961 | ||
6962 | var len = allText.length, pos = 0, i = 1, text = "", style, css; | |
6963 | var nextChange = 0, spanStyle, spanEndStyle, spanStartStyle, title, collapsed; | |
6964 | for (;;) { | |
6965 | if (nextChange == pos) { // Update current marker set | |
6966 | spanStyle = spanEndStyle = spanStartStyle = title = css = ""; | |
6967 | collapsed = null; nextChange = Infinity; | |
6968 | var foundBookmarks = []; | |
6969 | for (var j = 0; j < spans.length; ++j) { | |
6970 | var sp = spans[j], m = sp.marker; | |
6971 | if (m.type == "bookmark" && sp.from == pos && m.widgetNode) { | |
6972 | foundBookmarks.push(m); | |
6973 | } else if (sp.from <= pos && (sp.to == null || sp.to > pos || m.collapsed && sp.to == pos && sp.from == pos)) { | |
6974 | if (sp.to != null && sp.to != pos && nextChange > sp.to) { | |
6975 | nextChange = sp.to; | |
6976 | spanEndStyle = ""; | |
6977 | } | |
6978 | if (m.className) spanStyle += " " + m.className; | |
6979 | if (m.css) css = m.css; | |
6980 | if (m.startStyle && sp.from == pos) spanStartStyle += " " + m.startStyle; | |
6981 | if (m.endStyle && sp.to == nextChange) spanEndStyle += " " + m.endStyle; | |
6982 | if (m.title && !title) title = m.title; | |
6983 | if (m.collapsed && (!collapsed || compareCollapsedMarkers(collapsed.marker, m) < 0)) | |
6984 | collapsed = sp; | |
6985 | } else if (sp.from > pos && nextChange > sp.from) { | |
6986 | nextChange = sp.from; | |
6987 | } | |
6988 | } | |
6989 | if (collapsed && (collapsed.from || 0) == pos) { | |
6990 | buildCollapsedSpan(builder, (collapsed.to == null ? len + 1 : collapsed.to) - pos, | |
6991 | collapsed.marker, collapsed.from == null); | |
6992 | if (collapsed.to == null) return; | |
6993 | if (collapsed.to == pos) collapsed = false; | |
6994 | } | |
6995 | if (!collapsed && foundBookmarks.length) for (var j = 0; j < foundBookmarks.length; ++j) | |
6996 | buildCollapsedSpan(builder, 0, foundBookmarks[j]); | |
6997 | } | |
6998 | if (pos >= len) break; | |
6999 | ||
7000 | var upto = Math.min(len, nextChange); | |
7001 | while (true) { | |
7002 | if (text) { | |
7003 | var end = pos + text.length; | |
7004 | if (!collapsed) { | |
7005 | var tokenText = end > upto ? text.slice(0, upto - pos) : text; | |
7006 | builder.addToken(builder, tokenText, style ? style + spanStyle : spanStyle, | |
7007 | spanStartStyle, pos + tokenText.length == nextChange ? spanEndStyle : "", title, css); | |
7008 | } | |
7009 | if (end >= upto) {text = text.slice(upto - pos); pos = upto; break;} | |
7010 | pos = end; | |
7011 | spanStartStyle = ""; | |
7012 | } | |
7013 | text = allText.slice(at, at = styles[i++]); | |
7014 | style = interpretTokenStyle(styles[i++], builder.cm.options); | |
7015 | } | |
7016 | } | |
7017 | } | |
7018 | ||
7019 | // DOCUMENT DATA STRUCTURE | |
7020 | ||
7021 | // By default, updates that start and end at the beginning of a line | |
7022 | // are treated specially, in order to make the association of line | |
7023 | // widgets and marker elements with the text behave more intuitive. | |
7024 | function isWholeLineUpdate(doc, change) { | |
7025 | return change.from.ch == 0 && change.to.ch == 0 && lst(change.text) == "" && | |
7026 | (!doc.cm || doc.cm.options.wholeLineUpdateBefore); | |
7027 | } | |
7028 | ||
7029 | // Perform a change on the document data structure. | |
7030 | function updateDoc(doc, change, markedSpans, estimateHeight) { | |
7031 | function spansFor(n) {return markedSpans ? markedSpans[n] : null;} | |
7032 | function update(line, text, spans) { | |
7033 | updateLine(line, text, spans, estimateHeight); | |
7034 | signalLater(line, "change", line, change); | |
7035 | } | |
7036 | function linesFor(start, end) { | |
7037 | for (var i = start, result = []; i < end; ++i) | |
7038 | result.push(new Line(text[i], spansFor(i), estimateHeight)); | |
7039 | return result; | |
7040 | } | |
7041 | ||
7042 | var from = change.from, to = change.to, text = change.text; | |
7043 | var firstLine = getLine(doc, from.line), lastLine = getLine(doc, to.line); | |
7044 | var lastText = lst(text), lastSpans = spansFor(text.length - 1), nlines = to.line - from.line; | |
7045 | ||
7046 | // Adjust the line structure | |
7047 | if (change.full) { | |
7048 | doc.insert(0, linesFor(0, text.length)); | |
7049 | doc.remove(text.length, doc.size - text.length); | |
7050 | } else if (isWholeLineUpdate(doc, change)) { | |
7051 | // This is a whole-line replace. Treated specially to make | |
7052 | // sure line objects move the way they are supposed to. | |
7053 | var added = linesFor(0, text.length - 1); | |
7054 | update(lastLine, lastLine.text, lastSpans); | |
7055 | if (nlines) doc.remove(from.line, nlines); | |
7056 | if (added.length) doc.insert(from.line, added); | |
7057 | } else if (firstLine == lastLine) { | |
7058 | if (text.length == 1) { | |
7059 | update(firstLine, firstLine.text.slice(0, from.ch) + lastText + firstLine.text.slice(to.ch), lastSpans); | |
7060 | } else { | |
7061 | var added = linesFor(1, text.length - 1); | |
7062 | added.push(new Line(lastText + firstLine.text.slice(to.ch), lastSpans, estimateHeight)); | |
7063 | update(firstLine, firstLine.text.slice(0, from.ch) + text[0], spansFor(0)); | |
7064 | doc.insert(from.line + 1, added); | |
7065 | } | |
7066 | } else if (text.length == 1) { | |
7067 | update(firstLine, firstLine.text.slice(0, from.ch) + text[0] + lastLine.text.slice(to.ch), spansFor(0)); | |
7068 | doc.remove(from.line + 1, nlines); | |
7069 | } else { | |
7070 | update(firstLine, firstLine.text.slice(0, from.ch) + text[0], spansFor(0)); | |
7071 | update(lastLine, lastText + lastLine.text.slice(to.ch), lastSpans); | |
7072 | var added = linesFor(1, text.length - 1); | |
7073 | if (nlines > 1) doc.remove(from.line + 1, nlines - 1); | |
7074 | doc.insert(from.line + 1, added); | |
7075 | } | |
7076 | ||
7077 | signalLater(doc, "change", doc, change); | |
7078 | } | |
7079 | ||
7080 | // The document is represented as a BTree consisting of leaves, with | |
7081 | // chunk of lines in them, and branches, with up to ten leaves or | |
7082 | // other branch nodes below them. The top node is always a branch | |
7083 | // node, and is the document object itself (meaning it has | |
7084 | // additional methods and properties). | |
7085 | // | |
7086 | // All nodes have parent links. The tree is used both to go from | |
7087 | // line numbers to line objects, and to go from objects to numbers. | |
7088 | // It also indexes by height, and is used to convert between height | |
7089 | // and line object, and to find the total height of the document. | |
7090 | // | |
7091 | // See also http://marijnhaverbeke.nl/blog/codemirror-line-tree.html | |
7092 | ||
7093 | function LeafChunk(lines) { | |
7094 | this.lines = lines; | |
7095 | this.parent = null; | |
7096 | for (var i = 0, height = 0; i < lines.length; ++i) { | |
7097 | lines[i].parent = this; | |
7098 | height += lines[i].height; | |
7099 | } | |
7100 | this.height = height; | |
7101 | } | |
7102 | ||
7103 | LeafChunk.prototype = { | |
7104 | chunkSize: function() { return this.lines.length; }, | |
7105 | // Remove the n lines at offset 'at'. | |
7106 | removeInner: function(at, n) { | |
7107 | for (var i = at, e = at + n; i < e; ++i) { | |
7108 | var line = this.lines[i]; | |
7109 | this.height -= line.height; | |
7110 | cleanUpLine(line); | |
7111 | signalLater(line, "delete"); | |
7112 | } | |
7113 | this.lines.splice(at, n); | |
7114 | }, | |
7115 | // Helper used to collapse a small branch into a single leaf. | |
7116 | collapse: function(lines) { | |
7117 | lines.push.apply(lines, this.lines); | |
7118 | }, | |
7119 | // Insert the given array of lines at offset 'at', count them as | |
7120 | // having the given height. | |
7121 | insertInner: function(at, lines, height) { | |
7122 | this.height += height; | |
7123 | this.lines = this.lines.slice(0, at).concat(lines).concat(this.lines.slice(at)); | |
7124 | for (var i = 0; i < lines.length; ++i) lines[i].parent = this; | |
7125 | }, | |
7126 | // Used to iterate over a part of the tree. | |
7127 | iterN: function(at, n, op) { | |
7128 | for (var e = at + n; at < e; ++at) | |
7129 | if (op(this.lines[at])) return true; | |
7130 | } | |
7131 | }; | |
7132 | ||
7133 | function BranchChunk(children) { | |
7134 | this.children = children; | |
7135 | var size = 0, height = 0; | |
7136 | for (var i = 0; i < children.length; ++i) { | |
7137 | var ch = children[i]; | |
7138 | size += ch.chunkSize(); height += ch.height; | |
7139 | ch.parent = this; | |
7140 | } | |
7141 | this.size = size; | |
7142 | this.height = height; | |
7143 | this.parent = null; | |
7144 | } | |
7145 | ||
7146 | BranchChunk.prototype = { | |
7147 | chunkSize: function() { return this.size; }, | |
7148 | removeInner: function(at, n) { | |
7149 | this.size -= n; | |
7150 | for (var i = 0; i < this.children.length; ++i) { | |
7151 | var child = this.children[i], sz = child.chunkSize(); | |
7152 | if (at < sz) { | |
7153 | var rm = Math.min(n, sz - at), oldHeight = child.height; | |
7154 | child.removeInner(at, rm); | |
7155 | this.height -= oldHeight - child.height; | |
7156 | if (sz == rm) { this.children.splice(i--, 1); child.parent = null; } | |
7157 | if ((n -= rm) == 0) break; | |
7158 | at = 0; | |
7159 | } else at -= sz; | |
7160 | } | |
7161 | // If the result is smaller than 25 lines, ensure that it is a | |
7162 | // single leaf node. | |
7163 | if (this.size - n < 25 && | |
7164 | (this.children.length > 1 || !(this.children[0] instanceof LeafChunk))) { | |
7165 | var lines = []; | |
7166 | this.collapse(lines); | |
7167 | this.children = [new LeafChunk(lines)]; | |
7168 | this.children[0].parent = this; | |
7169 | } | |
7170 | }, | |
7171 | collapse: function(lines) { | |
7172 | for (var i = 0; i < this.children.length; ++i) this.children[i].collapse(lines); | |
7173 | }, | |
7174 | insertInner: function(at, lines, height) { | |
7175 | this.size += lines.length; | |
7176 | this.height += height; | |
7177 | for (var i = 0; i < this.children.length; ++i) { | |
7178 | var child = this.children[i], sz = child.chunkSize(); | |
7179 | if (at <= sz) { | |
7180 | child.insertInner(at, lines, height); | |
7181 | if (child.lines && child.lines.length > 50) { | |
7182 | while (child.lines.length > 50) { | |
7183 | var spilled = child.lines.splice(child.lines.length - 25, 25); | |
7184 | var newleaf = new LeafChunk(spilled); | |
7185 | child.height -= newleaf.height; | |
7186 | this.children.splice(i + 1, 0, newleaf); | |
7187 | newleaf.parent = this; | |
7188 | } | |
7189 | this.maybeSpill(); | |
7190 | } | |
7191 | break; | |
7192 | } | |
7193 | at -= sz; | |
7194 | } | |
7195 | }, | |
7196 | // When a node has grown, check whether it should be split. | |
7197 | maybeSpill: function() { | |
7198 | if (this.children.length <= 10) return; | |
7199 | var me = this; | |
7200 | do { | |
7201 | var spilled = me.children.splice(me.children.length - 5, 5); | |
7202 | var sibling = new BranchChunk(spilled); | |
7203 | if (!me.parent) { // Become the parent node | |
7204 | var copy = new BranchChunk(me.children); | |
7205 | copy.parent = me; | |
7206 | me.children = [copy, sibling]; | |
7207 | me = copy; | |
7208 | } else { | |
7209 | me.size -= sibling.size; | |
7210 | me.height -= sibling.height; | |
7211 | var myIndex = indexOf(me.parent.children, me); | |
7212 | me.parent.children.splice(myIndex + 1, 0, sibling); | |
7213 | } | |
7214 | sibling.parent = me.parent; | |
7215 | } while (me.children.length > 10); | |
7216 | me.parent.maybeSpill(); | |
7217 | }, | |
7218 | iterN: function(at, n, op) { | |
7219 | for (var i = 0; i < this.children.length; ++i) { | |
7220 | var child = this.children[i], sz = child.chunkSize(); | |
7221 | if (at < sz) { | |
7222 | var used = Math.min(n, sz - at); | |
7223 | if (child.iterN(at, used, op)) return true; | |
7224 | if ((n -= used) == 0) break; | |
7225 | at = 0; | |
7226 | } else at -= sz; | |
7227 | } | |
7228 | } | |
7229 | }; | |
7230 | ||
7231 | var nextDocId = 0; | |
7232 | var Doc = CodeMirror.Doc = function(text, mode, firstLine) { | |
7233 | if (!(this instanceof Doc)) return new Doc(text, mode, firstLine); | |
7234 | if (firstLine == null) firstLine = 0; | |
7235 | ||
7236 | BranchChunk.call(this, [new LeafChunk([new Line("", null)])]); | |
7237 | this.first = firstLine; | |
7238 | this.scrollTop = this.scrollLeft = 0; | |
7239 | this.cantEdit = false; | |
7240 | this.cleanGeneration = 1; | |
7241 | this.frontier = firstLine; | |
7242 | var start = Pos(firstLine, 0); | |
7243 | this.sel = simpleSelection(start); | |
7244 | this.history = new History(null); | |
7245 | this.id = ++nextDocId; | |
7246 | this.modeOption = mode; | |
7247 | ||
7248 | if (typeof text == "string") text = splitLines(text); | |
7249 | updateDoc(this, {from: start, to: start, text: text}); | |
7250 | setSelection(this, simpleSelection(start), sel_dontScroll); | |
7251 | }; | |
7252 | ||
7253 | Doc.prototype = createObj(BranchChunk.prototype, { | |
7254 | constructor: Doc, | |
7255 | // Iterate over the document. Supports two forms -- with only one | |
7256 | // argument, it calls that for each line in the document. With | |
7257 | // three, it iterates over the range given by the first two (with | |
7258 | // the second being non-inclusive). | |
7259 | iter: function(from, to, op) { | |
7260 | if (op) this.iterN(from - this.first, to - from, op); | |
7261 | else this.iterN(this.first, this.first + this.size, from); | |
7262 | }, | |
7263 | ||
7264 | // Non-public interface for adding and removing lines. | |
7265 | insert: function(at, lines) { | |
7266 | var height = 0; | |
7267 | for (var i = 0; i < lines.length; ++i) height += lines[i].height; | |
7268 | this.insertInner(at - this.first, lines, height); | |
7269 | }, | |
7270 | remove: function(at, n) { this.removeInner(at - this.first, n); }, | |
7271 | ||
7272 | // From here, the methods are part of the public interface. Most | |
7273 | // are also available from CodeMirror (editor) instances. | |
7274 | ||
7275 | getValue: function(lineSep) { | |
7276 | var lines = getLines(this, this.first, this.first + this.size); | |
7277 | if (lineSep === false) return lines; | |
7278 | return lines.join(lineSep || "\n"); | |
7279 | }, | |
7280 | setValue: docMethodOp(function(code) { | |
7281 | var top = Pos(this.first, 0), last = this.first + this.size - 1; | |
7282 | makeChange(this, {from: top, to: Pos(last, getLine(this, last).text.length), | |
7283 | text: splitLines(code), origin: "setValue", full: true}, true); | |
7284 | setSelection(this, simpleSelection(top)); | |
7285 | }), | |
7286 | replaceRange: function(code, from, to, origin) { | |
7287 | from = clipPos(this, from); | |
7288 | to = to ? clipPos(this, to) : from; | |
7289 | replaceRange(this, code, from, to, origin); | |
7290 | }, | |
7291 | getRange: function(from, to, lineSep) { | |
7292 | var lines = getBetween(this, clipPos(this, from), clipPos(this, to)); | |
7293 | if (lineSep === false) return lines; | |
7294 | return lines.join(lineSep || "\n"); | |
7295 | }, | |
7296 | ||
7297 | getLine: function(line) {var l = this.getLineHandle(line); return l && l.text;}, | |
7298 | ||
7299 | getLineHandle: function(line) {if (isLine(this, line)) return getLine(this, line);}, | |
7300 | getLineNumber: function(line) {return lineNo(line);}, | |
7301 | ||
7302 | getLineHandleVisualStart: function(line) { | |
7303 | if (typeof line == "number") line = getLine(this, line); | |
7304 | return visualLine(line); | |
7305 | }, | |
7306 | ||
7307 | lineCount: function() {return this.size;}, | |
7308 | firstLine: function() {return this.first;}, | |
7309 | lastLine: function() {return this.first + this.size - 1;}, | |
7310 | ||
7311 | clipPos: function(pos) {return clipPos(this, pos);}, | |
7312 | ||
7313 | getCursor: function(start) { | |
7314 | var range = this.sel.primary(), pos; | |
7315 | if (start == null || start == "head") pos = range.head; | |
7316 | else if (start == "anchor") pos = range.anchor; | |
7317 | else if (start == "end" || start == "to" || start === false) pos = range.to(); | |
7318 | else pos = range.from(); | |
7319 | return pos; | |
7320 | }, | |
7321 | listSelections: function() { return this.sel.ranges; }, | |
7322 | somethingSelected: function() {return this.sel.somethingSelected();}, | |
7323 | ||
7324 | setCursor: docMethodOp(function(line, ch, options) { | |
7325 | setSimpleSelection(this, clipPos(this, typeof line == "number" ? Pos(line, ch || 0) : line), null, options); | |
7326 | }), | |
7327 | setSelection: docMethodOp(function(anchor, head, options) { | |
7328 | setSimpleSelection(this, clipPos(this, anchor), clipPos(this, head || anchor), options); | |
7329 | }), | |
7330 | extendSelection: docMethodOp(function(head, other, options) { | |
7331 | extendSelection(this, clipPos(this, head), other && clipPos(this, other), options); | |
7332 | }), | |
7333 | extendSelections: docMethodOp(function(heads, options) { | |
7334 | extendSelections(this, clipPosArray(this, heads, options)); | |
7335 | }), | |
7336 | extendSelectionsBy: docMethodOp(function(f, options) { | |
7337 | extendSelections(this, map(this.sel.ranges, f), options); | |
7338 | }), | |
7339 | setSelections: docMethodOp(function(ranges, primary, options) { | |
7340 | if (!ranges.length) return; | |
7341 | for (var i = 0, out = []; i < ranges.length; i++) | |
7342 | out[i] = new Range(clipPos(this, ranges[i].anchor), | |
7343 | clipPos(this, ranges[i].head)); | |
7344 | if (primary == null) primary = Math.min(ranges.length - 1, this.sel.primIndex); | |
7345 | setSelection(this, normalizeSelection(out, primary), options); | |
7346 | }), | |
7347 | addSelection: docMethodOp(function(anchor, head, options) { | |
7348 | var ranges = this.sel.ranges.slice(0); | |
7349 | ranges.push(new Range(clipPos(this, anchor), clipPos(this, head || anchor))); | |
7350 | setSelection(this, normalizeSelection(ranges, ranges.length - 1), options); | |
7351 | }), | |
7352 | ||
7353 | getSelection: function(lineSep) { | |
7354 | var ranges = this.sel.ranges, lines; | |
7355 | for (var i = 0; i < ranges.length; i++) { | |
7356 | var sel = getBetween(this, ranges[i].from(), ranges[i].to()); | |
7357 | lines = lines ? lines.concat(sel) : sel; | |
7358 | } | |
7359 | if (lineSep === false) return lines; | |
7360 | else return lines.join(lineSep || "\n"); | |
7361 | }, | |
7362 | getSelections: function(lineSep) { | |
7363 | var parts = [], ranges = this.sel.ranges; | |
7364 | for (var i = 0; i < ranges.length; i++) { | |
7365 | var sel = getBetween(this, ranges[i].from(), ranges[i].to()); | |
7366 | if (lineSep !== false) sel = sel.join(lineSep || "\n"); | |
7367 | parts[i] = sel; | |
7368 | } | |
7369 | return parts; | |
7370 | }, | |
7371 | replaceSelection: function(code, collapse, origin) { | |
7372 | var dup = []; | |
7373 | for (var i = 0; i < this.sel.ranges.length; i++) | |
7374 | dup[i] = code; | |
7375 | this.replaceSelections(dup, collapse, origin || "+input"); | |
7376 | }, | |
7377 | replaceSelections: docMethodOp(function(code, collapse, origin) { | |
7378 | var changes = [], sel = this.sel; | |
7379 | for (var i = 0; i < sel.ranges.length; i++) { | |
7380 | var range = sel.ranges[i]; | |
7381 | changes[i] = {from: range.from(), to: range.to(), text: splitLines(code[i]), origin: origin}; | |
7382 | } | |
7383 | var newSel = collapse && collapse != "end" && computeReplacedSel(this, changes, collapse); | |
7384 | for (var i = changes.length - 1; i >= 0; i--) | |
7385 | makeChange(this, changes[i]); | |
7386 | if (newSel) setSelectionReplaceHistory(this, newSel); | |
7387 | else if (this.cm) ensureCursorVisible(this.cm); | |
7388 | }), | |
7389 | undo: docMethodOp(function() {makeChangeFromHistory(this, "undo");}), | |
7390 | redo: docMethodOp(function() {makeChangeFromHistory(this, "redo");}), | |
7391 | undoSelection: docMethodOp(function() {makeChangeFromHistory(this, "undo", true);}), | |
7392 | redoSelection: docMethodOp(function() {makeChangeFromHistory(this, "redo", true);}), | |
7393 | ||
7394 | setExtending: function(val) {this.extend = val;}, | |
7395 | getExtending: function() {return this.extend;}, | |
7396 | ||
7397 | historySize: function() { | |
7398 | var hist = this.history, done = 0, undone = 0; | |
7399 | for (var i = 0; i < hist.done.length; i++) if (!hist.done[i].ranges) ++done; | |
7400 | for (var i = 0; i < hist.undone.length; i++) if (!hist.undone[i].ranges) ++undone; | |
7401 | return {undo: done, redo: undone}; | |
7402 | }, | |
7403 | clearHistory: function() {this.history = new History(this.history.maxGeneration);}, | |
7404 | ||
7405 | markClean: function() { | |
7406 | this.cleanGeneration = this.changeGeneration(true); | |
7407 | }, | |
7408 | changeGeneration: function(forceSplit) { | |
7409 | if (forceSplit) | |
7410 | this.history.lastOp = this.history.lastSelOp = this.history.lastOrigin = null; | |
7411 | return this.history.generation; | |
7412 | }, | |
7413 | isClean: function (gen) { | |
7414 | return this.history.generation == (gen || this.cleanGeneration); | |
7415 | }, | |
7416 | ||
7417 | getHistory: function() { | |
7418 | return {done: copyHistoryArray(this.history.done), | |
7419 | undone: copyHistoryArray(this.history.undone)}; | |
7420 | }, | |
7421 | setHistory: function(histData) { | |
7422 | var hist = this.history = new History(this.history.maxGeneration); | |
7423 | hist.done = copyHistoryArray(histData.done.slice(0), null, true); | |
7424 | hist.undone = copyHistoryArray(histData.undone.slice(0), null, true); | |
7425 | }, | |
7426 | ||
7427 | addLineClass: docMethodOp(function(handle, where, cls) { | |
7428 | return changeLine(this, handle, where == "gutter" ? "gutter" : "class", function(line) { | |
7429 | var prop = where == "text" ? "textClass" | |
7430 | : where == "background" ? "bgClass" | |
7431 | : where == "gutter" ? "gutterClass" : "wrapClass"; | |
7432 | if (!line[prop]) line[prop] = cls; | |
7433 | else if (classTest(cls).test(line[prop])) return false; | |
7434 | else line[prop] += " " + cls; | |
7435 | return true; | |
7436 | }); | |
7437 | }), | |
7438 | removeLineClass: docMethodOp(function(handle, where, cls) { | |
7439 | return changeLine(this, handle, where == "gutter" ? "gutter" : "class", function(line) { | |
7440 | var prop = where == "text" ? "textClass" | |
7441 | : where == "background" ? "bgClass" | |
7442 | : where == "gutter" ? "gutterClass" : "wrapClass"; | |
7443 | var cur = line[prop]; | |
7444 | if (!cur) return false; | |
7445 | else if (cls == null) line[prop] = null; | |
7446 | else { | |
7447 | var found = cur.match(classTest(cls)); | |
7448 | if (!found) return false; | |
7449 | var end = found.index + found[0].length; | |
7450 | line[prop] = cur.slice(0, found.index) + (!found.index || end == cur.length ? "" : " ") + cur.slice(end) || null; | |
7451 | } | |
7452 | return true; | |
7453 | }); | |
7454 | }), | |
7455 | ||
7456 | addLineWidget: docMethodOp(function(handle, node, options) { | |
7457 | return addLineWidget(this, handle, node, options); | |
7458 | }), | |
7459 | removeLineWidget: function(widget) { widget.clear(); }, | |
7460 | ||
7461 | markText: function(from, to, options) { | |
7462 | return markText(this, clipPos(this, from), clipPos(this, to), options, "range"); | |
7463 | }, | |
7464 | setBookmark: function(pos, options) { | |
7465 | var realOpts = {replacedWith: options && (options.nodeType == null ? options.widget : options), | |
7466 | insertLeft: options && options.insertLeft, | |
7467 | clearWhenEmpty: false, shared: options && options.shared, | |
7468 | handleMouseEvents: options && options.handleMouseEvents}; | |
7469 | pos = clipPos(this, pos); | |
7470 | return markText(this, pos, pos, realOpts, "bookmark"); | |
7471 | }, | |
7472 | findMarksAt: function(pos) { | |
7473 | pos = clipPos(this, pos); | |
7474 | var markers = [], spans = getLine(this, pos.line).markedSpans; | |
7475 | if (spans) for (var i = 0; i < spans.length; ++i) { | |
7476 | var span = spans[i]; | |
7477 | if ((span.from == null || span.from <= pos.ch) && | |
7478 | (span.to == null || span.to >= pos.ch)) | |
7479 | markers.push(span.marker.parent || span.marker); | |
7480 | } | |
7481 | return markers; | |
7482 | }, | |
7483 | findMarks: function(from, to, filter) { | |
7484 | from = clipPos(this, from); to = clipPos(this, to); | |
7485 | var found = [], lineNo = from.line; | |
7486 | this.iter(from.line, to.line + 1, function(line) { | |
7487 | var spans = line.markedSpans; | |
7488 | if (spans) for (var i = 0; i < spans.length; i++) { | |
7489 | var span = spans[i]; | |
7490 | if (!(lineNo == from.line && from.ch > span.to || | |
7491 | span.from == null && lineNo != from.line|| | |
7492 | lineNo == to.line && span.from > to.ch) && | |
7493 | (!filter || filter(span.marker))) | |
7494 | found.push(span.marker.parent || span.marker); | |
7495 | } | |
7496 | ++lineNo; | |
7497 | }); | |
7498 | return found; | |
7499 | }, | |
7500 | getAllMarks: function() { | |
7501 | var markers = []; | |
7502 | this.iter(function(line) { | |
7503 | var sps = line.markedSpans; | |
7504 | if (sps) for (var i = 0; i < sps.length; ++i) | |
7505 | if (sps[i].from != null) markers.push(sps[i].marker); | |
7506 | }); | |
7507 | return markers; | |
7508 | }, | |
7509 | ||
7510 | posFromIndex: function(off) { | |
7511 | var ch, lineNo = this.first; | |
7512 | this.iter(function(line) { | |
7513 | var sz = line.text.length + 1; | |
7514 | if (sz > off) { ch = off; return true; } | |
7515 | off -= sz; | |
7516 | ++lineNo; | |
7517 | }); | |
7518 | return clipPos(this, Pos(lineNo, ch)); | |
7519 | }, | |
7520 | indexFromPos: function (coords) { | |
7521 | coords = clipPos(this, coords); | |
7522 | var index = coords.ch; | |
7523 | if (coords.line < this.first || coords.ch < 0) return 0; | |
7524 | this.iter(this.first, coords.line, function (line) { | |
7525 | index += line.text.length + 1; | |
7526 | }); | |
7527 | return index; | |
7528 | }, | |
7529 | ||
7530 | copy: function(copyHistory) { | |
7531 | var doc = new Doc(getLines(this, this.first, this.first + this.size), this.modeOption, this.first); | |
7532 | doc.scrollTop = this.scrollTop; doc.scrollLeft = this.scrollLeft; | |
7533 | doc.sel = this.sel; | |
7534 | doc.extend = false; | |
7535 | if (copyHistory) { | |
7536 | doc.history.undoDepth = this.history.undoDepth; | |
7537 | doc.setHistory(this.getHistory()); | |
7538 | } | |
7539 | return doc; | |
7540 | }, | |
7541 | ||
7542 | linkedDoc: function(options) { | |
7543 | if (!options) options = {}; | |
7544 | var from = this.first, to = this.first + this.size; | |
7545 | if (options.from != null && options.from > from) from = options.from; | |
7546 | if (options.to != null && options.to < to) to = options.to; | |
7547 | var copy = new Doc(getLines(this, from, to), options.mode || this.modeOption, from); | |
7548 | if (options.sharedHist) copy.history = this.history; | |
7549 | (this.linked || (this.linked = [])).push({doc: copy, sharedHist: options.sharedHist}); | |
7550 | copy.linked = [{doc: this, isParent: true, sharedHist: options.sharedHist}]; | |
7551 | copySharedMarkers(copy, findSharedMarkers(this)); | |
7552 | return copy; | |
7553 | }, | |
7554 | unlinkDoc: function(other) { | |
7555 | if (other instanceof CodeMirror) other = other.doc; | |
7556 | if (this.linked) for (var i = 0; i < this.linked.length; ++i) { | |
7557 | var link = this.linked[i]; | |
7558 | if (link.doc != other) continue; | |
7559 | this.linked.splice(i, 1); | |
7560 | other.unlinkDoc(this); | |
7561 | detachSharedMarkers(findSharedMarkers(this)); | |
7562 | break; | |
7563 | } | |
7564 | // If the histories were shared, split them again | |
7565 | if (other.history == this.history) { | |
7566 | var splitIds = [other.id]; | |
7567 | linkedDocs(other, function(doc) {splitIds.push(doc.id);}, true); | |
7568 | other.history = new History(null); | |
7569 | other.history.done = copyHistoryArray(this.history.done, splitIds); | |
7570 | other.history.undone = copyHistoryArray(this.history.undone, splitIds); | |
7571 | } | |
7572 | }, | |
7573 | iterLinkedDocs: function(f) {linkedDocs(this, f);}, | |
7574 | ||
7575 | getMode: function() {return this.mode;}, | |
7576 | getEditor: function() {return this.cm;} | |
7577 | }); | |
7578 | ||
7579 | // Public alias. | |
7580 | Doc.prototype.eachLine = Doc.prototype.iter; | |
7581 | ||
7582 | // Set up methods on CodeMirror's prototype to redirect to the editor's document. | |
7583 | var dontDelegate = "iter insert remove copy getEditor".split(" "); | |
7584 | for (var prop in Doc.prototype) if (Doc.prototype.hasOwnProperty(prop) && indexOf(dontDelegate, prop) < 0) | |
7585 | CodeMirror.prototype[prop] = (function(method) { | |
7586 | return function() {return method.apply(this.doc, arguments);}; | |
7587 | })(Doc.prototype[prop]); | |
7588 | ||
7589 | eventMixin(Doc); | |
7590 | ||
7591 | // Call f for all linked documents. | |
7592 | function linkedDocs(doc, f, sharedHistOnly) { | |
7593 | function propagate(doc, skip, sharedHist) { | |
7594 | if (doc.linked) for (var i = 0; i < doc.linked.length; ++i) { | |
7595 | var rel = doc.linked[i]; | |
7596 | if (rel.doc == skip) continue; | |
7597 | var shared = sharedHist && rel.sharedHist; | |
7598 | if (sharedHistOnly && !shared) continue; | |
7599 | f(rel.doc, shared); | |
7600 | propagate(rel.doc, doc, shared); | |
7601 | } | |
7602 | } | |
7603 | propagate(doc, null, true); | |
7604 | } | |
7605 | ||
7606 | // Attach a document to an editor. | |
7607 | function attachDoc(cm, doc) { | |
7608 | if (doc.cm) throw new Error("This document is already in use."); | |
7609 | cm.doc = doc; | |
7610 | doc.cm = cm; | |
7611 | estimateLineHeights(cm); | |
7612 | loadMode(cm); | |
7613 | if (!cm.options.lineWrapping) findMaxLine(cm); | |
7614 | cm.options.mode = doc.modeOption; | |
7615 | regChange(cm); | |
7616 | } | |
7617 | ||
7618 | // LINE UTILITIES | |
7619 | ||
7620 | // Find the line object corresponding to the given line number. | |
7621 | function getLine(doc, n) { | |
7622 | n -= doc.first; | |
7623 | if (n < 0 || n >= doc.size) throw new Error("There is no line " + (n + doc.first) + " in the document."); | |
7624 | for (var chunk = doc; !chunk.lines;) { | |
7625 | for (var i = 0;; ++i) { | |
7626 | var child = chunk.children[i], sz = child.chunkSize(); | |
7627 | if (n < sz) { chunk = child; break; } | |
7628 | n -= sz; | |
7629 | } | |
7630 | } | |
7631 | return chunk.lines[n]; | |
7632 | } | |
7633 | ||
7634 | // Get the part of a document between two positions, as an array of | |
7635 | // strings. | |
7636 | function getBetween(doc, start, end) { | |
7637 | var out = [], n = start.line; | |
7638 | doc.iter(start.line, end.line + 1, function(line) { | |
7639 | var text = line.text; | |
7640 | if (n == end.line) text = text.slice(0, end.ch); | |
7641 | if (n == start.line) text = text.slice(start.ch); | |
7642 | out.push(text); | |
7643 | ++n; | |
7644 | }); | |
7645 | return out; | |
7646 | } | |
7647 | // Get the lines between from and to, as array of strings. | |
7648 | function getLines(doc, from, to) { | |
7649 | var out = []; | |
7650 | doc.iter(from, to, function(line) { out.push(line.text); }); | |
7651 | return out; | |
7652 | } | |
7653 | ||
7654 | // Update the height of a line, propagating the height change | |
7655 | // upwards to parent nodes. | |
7656 | function updateLineHeight(line, height) { | |
7657 | var diff = height - line.height; | |
7658 | if (diff) for (var n = line; n; n = n.parent) n.height += diff; | |
7659 | } | |
7660 | ||
7661 | // Given a line object, find its line number by walking up through | |
7662 | // its parent links. | |
7663 | function lineNo(line) { | |
7664 | if (line.parent == null) return null; | |
7665 | var cur = line.parent, no = indexOf(cur.lines, line); | |
7666 | for (var chunk = cur.parent; chunk; cur = chunk, chunk = chunk.parent) { | |
7667 | for (var i = 0;; ++i) { | |
7668 | if (chunk.children[i] == cur) break; | |
7669 | no += chunk.children[i].chunkSize(); | |
7670 | } | |
7671 | } | |
7672 | return no + cur.first; | |
7673 | } | |
7674 | ||
7675 | // Find the line at the given vertical position, using the height | |
7676 | // information in the document tree. | |
7677 | function lineAtHeight(chunk, h) { | |
7678 | var n = chunk.first; | |
7679 | outer: do { | |
7680 | for (var i = 0; i < chunk.children.length; ++i) { | |
7681 | var child = chunk.children[i], ch = child.height; | |
7682 | if (h < ch) { chunk = child; continue outer; } | |
7683 | h -= ch; | |
7684 | n += child.chunkSize(); | |
7685 | } | |
7686 | return n; | |
7687 | } while (!chunk.lines); | |
7688 | for (var i = 0; i < chunk.lines.length; ++i) { | |
7689 | var line = chunk.lines[i], lh = line.height; | |
7690 | if (h < lh) break; | |
7691 | h -= lh; | |
7692 | } | |
7693 | return n + i; | |
7694 | } | |
7695 | ||
7696 | ||
7697 | // Find the height above the given line. | |
7698 | function heightAtLine(lineObj) { | |
7699 | lineObj = visualLine(lineObj); | |
7700 | ||
7701 | var h = 0, chunk = lineObj.parent; | |
7702 | for (var i = 0; i < chunk.lines.length; ++i) { | |
7703 | var line = chunk.lines[i]; | |
7704 | if (line == lineObj) break; | |
7705 | else h += line.height; | |
7706 | } | |
7707 | for (var p = chunk.parent; p; chunk = p, p = chunk.parent) { | |
7708 | for (var i = 0; i < p.children.length; ++i) { | |
7709 | var cur = p.children[i]; | |
7710 | if (cur == chunk) break; | |
7711 | else h += cur.height; | |
7712 | } | |
7713 | } | |
7714 | return h; | |
7715 | } | |
7716 | ||
7717 | // Get the bidi ordering for the given line (and cache it). Returns | |
7718 | // false for lines that are fully left-to-right, and an array of | |
7719 | // BidiSpan objects otherwise. | |
7720 | function getOrder(line) { | |
7721 | var order = line.order; | |
7722 | if (order == null) order = line.order = bidiOrdering(line.text); | |
7723 | return order; | |
7724 | } | |
7725 | ||
7726 | // HISTORY | |
7727 | ||
7728 | function History(startGen) { | |
7729 | // Arrays of change events and selections. Doing something adds an | |
7730 | // event to done and clears undo. Undoing moves events from done | |
7731 | // to undone, redoing moves them in the other direction. | |
7732 | this.done = []; this.undone = []; | |
7733 | this.undoDepth = Infinity; | |
7734 | // Used to track when changes can be merged into a single undo | |
7735 | // event | |
7736 | this.lastModTime = this.lastSelTime = 0; | |
7737 | this.lastOp = this.lastSelOp = null; | |
7738 | this.lastOrigin = this.lastSelOrigin = null; | |
7739 | // Used by the isClean() method | |
7740 | this.generation = this.maxGeneration = startGen || 1; | |
7741 | } | |
7742 | ||
7743 | // Create a history change event from an updateDoc-style change | |
7744 | // object. | |
7745 | function historyChangeFromChange(doc, change) { | |
7746 | var histChange = {from: copyPos(change.from), to: changeEnd(change), text: getBetween(doc, change.from, change.to)}; | |
7747 | attachLocalSpans(doc, histChange, change.from.line, change.to.line + 1); | |
7748 | linkedDocs(doc, function(doc) {attachLocalSpans(doc, histChange, change.from.line, change.to.line + 1);}, true); | |
7749 | return histChange; | |
7750 | } | |
7751 | ||
7752 | // Pop all selection events off the end of a history array. Stop at | |
7753 | // a change event. | |
7754 | function clearSelectionEvents(array) { | |
7755 | while (array.length) { | |
7756 | var last = lst(array); | |
7757 | if (last.ranges) array.pop(); | |
7758 | else break; | |
7759 | } | |
7760 | } | |
7761 | ||
7762 | // Find the top change event in the history. Pop off selection | |
7763 | // events that are in the way. | |
7764 | function lastChangeEvent(hist, force) { | |
7765 | if (force) { | |
7766 | clearSelectionEvents(hist.done); | |
7767 | return lst(hist.done); | |
7768 | } else if (hist.done.length && !lst(hist.done).ranges) { | |
7769 | return lst(hist.done); | |
7770 | } else if (hist.done.length > 1 && !hist.done[hist.done.length - 2].ranges) { | |
7771 | hist.done.pop(); | |
7772 | return lst(hist.done); | |
7773 | } | |
7774 | } | |
7775 | ||
7776 | // Register a change in the history. Merges changes that are within | |
7777 | // a single operation, ore are close together with an origin that | |
7778 | // allows merging (starting with "+") into a single event. | |
7779 | function addChangeToHistory(doc, change, selAfter, opId) { | |
7780 | var hist = doc.history; | |
7781 | hist.undone.length = 0; | |
7782 | var time = +new Date, cur; | |
7783 | ||
7784 | if ((hist.lastOp == opId || | |
7785 | hist.lastOrigin == change.origin && change.origin && | |
7786 | ((change.origin.charAt(0) == "+" && doc.cm && hist.lastModTime > time - doc.cm.options.historyEventDelay) || | |
7787 | change.origin.charAt(0) == "*")) && | |
7788 | (cur = lastChangeEvent(hist, hist.lastOp == opId))) { | |
7789 | // Merge this change into the last event | |
7790 | var last = lst(cur.changes); | |
7791 | if (cmp(change.from, change.to) == 0 && cmp(change.from, last.to) == 0) { | |
7792 | // Optimized case for simple insertion -- don't want to add | |
7793 | // new changesets for every character typed | |
7794 | last.to = changeEnd(change); | |
7795 | } else { | |
7796 | // Add new sub-event | |
7797 | cur.changes.push(historyChangeFromChange(doc, change)); | |
7798 | } | |
7799 | } else { | |
7800 | // Can not be merged, start a new event. | |
7801 | var before = lst(hist.done); | |
7802 | if (!before || !before.ranges) | |
7803 | pushSelectionToHistory(doc.sel, hist.done); | |
7804 | cur = {changes: [historyChangeFromChange(doc, change)], | |
7805 | generation: hist.generation}; | |
7806 | hist.done.push(cur); | |
7807 | while (hist.done.length > hist.undoDepth) { | |
7808 | hist.done.shift(); | |
7809 | if (!hist.done[0].ranges) hist.done.shift(); | |
7810 | } | |
7811 | } | |
7812 | hist.done.push(selAfter); | |
7813 | hist.generation = ++hist.maxGeneration; | |
7814 | hist.lastModTime = hist.lastSelTime = time; | |
7815 | hist.lastOp = hist.lastSelOp = opId; | |
7816 | hist.lastOrigin = hist.lastSelOrigin = change.origin; | |
7817 | ||
7818 | if (!last) signal(doc, "historyAdded"); | |
7819 | } | |
7820 | ||
7821 | function selectionEventCanBeMerged(doc, origin, prev, sel) { | |
7822 | var ch = origin.charAt(0); | |
7823 | return ch == "*" || | |
7824 | ch == "+" && | |
7825 | prev.ranges.length == sel.ranges.length && | |
7826 | prev.somethingSelected() == sel.somethingSelected() && | |
7827 | new Date - doc.history.lastSelTime <= (doc.cm ? doc.cm.options.historyEventDelay : 500); | |
7828 | } | |
7829 | ||
7830 | // Called whenever the selection changes, sets the new selection as | |
7831 | // the pending selection in the history, and pushes the old pending | |
7832 | // selection into the 'done' array when it was significantly | |
7833 | // different (in number of selected ranges, emptiness, or time). | |
7834 | function addSelectionToHistory(doc, sel, opId, options) { | |
7835 | var hist = doc.history, origin = options && options.origin; | |
7836 | ||
7837 | // A new event is started when the previous origin does not match | |
7838 | // the current, or the origins don't allow matching. Origins | |
7839 | // starting with * are always merged, those starting with + are | |
7840 | // merged when similar and close together in time. | |
7841 | if (opId == hist.lastSelOp || | |
7842 | (origin && hist.lastSelOrigin == origin && | |
7843 | (hist.lastModTime == hist.lastSelTime && hist.lastOrigin == origin || | |
7844 | selectionEventCanBeMerged(doc, origin, lst(hist.done), sel)))) | |
7845 | hist.done[hist.done.length - 1] = sel; | |
7846 | else | |
7847 | pushSelectionToHistory(sel, hist.done); | |
7848 | ||
7849 | hist.lastSelTime = +new Date; | |
7850 | hist.lastSelOrigin = origin; | |
7851 | hist.lastSelOp = opId; | |
7852 | if (options && options.clearRedo !== false) | |
7853 | clearSelectionEvents(hist.undone); | |
7854 | } | |
7855 | ||
7856 | function pushSelectionToHistory(sel, dest) { | |
7857 | var top = lst(dest); | |
7858 | if (!(top && top.ranges && top.equals(sel))) | |
7859 | dest.push(sel); | |
7860 | } | |
7861 | ||
7862 | // Used to store marked span information in the history. | |
7863 | function attachLocalSpans(doc, change, from, to) { | |
7864 | var existing = change["spans_" + doc.id], n = 0; | |
7865 | doc.iter(Math.max(doc.first, from), Math.min(doc.first + doc.size, to), function(line) { | |
7866 | if (line.markedSpans) | |
7867 | (existing || (existing = change["spans_" + doc.id] = {}))[n] = line.markedSpans; | |
7868 | ++n; | |
7869 | }); | |
7870 | } | |
7871 | ||
7872 | // When un/re-doing restores text containing marked spans, those | |
7873 | // that have been explicitly cleared should not be restored. | |
7874 | function removeClearedSpans(spans) { | |
7875 | if (!spans) return null; | |
7876 | for (var i = 0, out; i < spans.length; ++i) { | |
7877 | if (spans[i].marker.explicitlyCleared) { if (!out) out = spans.slice(0, i); } | |
7878 | else if (out) out.push(spans[i]); | |
7879 | } | |
7880 | return !out ? spans : out.length ? out : null; | |
7881 | } | |
7882 | ||
7883 | // Retrieve and filter the old marked spans stored in a change event. | |
7884 | function getOldSpans(doc, change) { | |
7885 | var found = change["spans_" + doc.id]; | |
7886 | if (!found) return null; | |
7887 | for (var i = 0, nw = []; i < change.text.length; ++i) | |
7888 | nw.push(removeClearedSpans(found[i])); | |
7889 | return nw; | |
7890 | } | |
7891 | ||
7892 | // Used both to provide a JSON-safe object in .getHistory, and, when | |
7893 | // detaching a document, to split the history in two | |
7894 | function copyHistoryArray(events, newGroup, instantiateSel) { | |
7895 | for (var i = 0, copy = []; i < events.length; ++i) { | |
7896 | var event = events[i]; | |
7897 | if (event.ranges) { | |
7898 | copy.push(instantiateSel ? Selection.prototype.deepCopy.call(event) : event); | |
7899 | continue; | |
7900 | } | |
7901 | var changes = event.changes, newChanges = []; | |
7902 | copy.push({changes: newChanges}); | |
7903 | for (var j = 0; j < changes.length; ++j) { | |
7904 | var change = changes[j], m; | |
7905 | newChanges.push({from: change.from, to: change.to, text: change.text}); | |
7906 | if (newGroup) for (var prop in change) if (m = prop.match(/^spans_(\d+)$/)) { | |
7907 | if (indexOf(newGroup, Number(m[1])) > -1) { | |
7908 | lst(newChanges)[prop] = change[prop]; | |
7909 | delete change[prop]; | |
7910 | } | |
7911 | } | |
7912 | } | |
7913 | } | |
7914 | return copy; | |
7915 | } | |
7916 | ||
7917 | // Rebasing/resetting history to deal with externally-sourced changes | |
7918 | ||
7919 | function rebaseHistSelSingle(pos, from, to, diff) { | |
7920 | if (to < pos.line) { | |
7921 | pos.line += diff; | |
7922 | } else if (from < pos.line) { | |
7923 | pos.line = from; | |
7924 | pos.ch = 0; | |
7925 | } | |
7926 | } | |
7927 | ||
7928 | // Tries to rebase an array of history events given a change in the | |
7929 | // document. If the change touches the same lines as the event, the | |
7930 | // event, and everything 'behind' it, is discarded. If the change is | |
7931 | // before the event, the event's positions are updated. Uses a | |
7932 | // copy-on-write scheme for the positions, to avoid having to | |
7933 | // reallocate them all on every rebase, but also avoid problems with | |
7934 | // shared position objects being unsafely updated. | |
7935 | function rebaseHistArray(array, from, to, diff) { | |
7936 | for (var i = 0; i < array.length; ++i) { | |
7937 | var sub = array[i], ok = true; | |
7938 | if (sub.ranges) { | |
7939 | if (!sub.copied) { sub = array[i] = sub.deepCopy(); sub.copied = true; } | |
7940 | for (var j = 0; j < sub.ranges.length; j++) { | |
7941 | rebaseHistSelSingle(sub.ranges[j].anchor, from, to, diff); | |
7942 | rebaseHistSelSingle(sub.ranges[j].head, from, to, diff); | |
7943 | } | |
7944 | continue; | |
7945 | } | |
7946 | for (var j = 0; j < sub.changes.length; ++j) { | |
7947 | var cur = sub.changes[j]; | |
7948 | if (to < cur.from.line) { | |
7949 | cur.from = Pos(cur.from.line + diff, cur.from.ch); | |
7950 | cur.to = Pos(cur.to.line + diff, cur.to.ch); | |
7951 | } else if (from <= cur.to.line) { | |
7952 | ok = false; | |
7953 | break; | |
7954 | } | |
7955 | } | |
7956 | if (!ok) { | |
7957 | array.splice(0, i + 1); | |
7958 | i = 0; | |
7959 | } | |
7960 | } | |
7961 | } | |
7962 | ||
7963 | function rebaseHist(hist, change) { | |
7964 | var from = change.from.line, to = change.to.line, diff = change.text.length - (to - from) - 1; | |
7965 | rebaseHistArray(hist.done, from, to, diff); | |
7966 | rebaseHistArray(hist.undone, from, to, diff); | |
7967 | } | |
7968 | ||
7969 | // EVENT UTILITIES | |
7970 | ||
7971 | // Due to the fact that we still support jurassic IE versions, some | |
7972 | // compatibility wrappers are needed. | |
7973 | ||
7974 | var e_preventDefault = CodeMirror.e_preventDefault = function(e) { | |
7975 | if (e.preventDefault) e.preventDefault(); | |
7976 | else e.returnValue = false; | |
7977 | }; | |
7978 | var e_stopPropagation = CodeMirror.e_stopPropagation = function(e) { | |
7979 | if (e.stopPropagation) e.stopPropagation(); | |
7980 | else e.cancelBubble = true; | |
7981 | }; | |
7982 | function e_defaultPrevented(e) { | |
7983 | return e.defaultPrevented != null ? e.defaultPrevented : e.returnValue == false; | |
7984 | } | |
7985 | var e_stop = CodeMirror.e_stop = function(e) {e_preventDefault(e); e_stopPropagation(e);}; | |
7986 | ||
7987 | function e_target(e) {return e.target || e.srcElement;} | |
7988 | function e_button(e) { | |
7989 | var b = e.which; | |
7990 | if (b == null) { | |
7991 | if (e.button & 1) b = 1; | |
7992 | else if (e.button & 2) b = 3; | |
7993 | else if (e.button & 4) b = 2; | |
7994 | } | |
7995 | if (mac && e.ctrlKey && b == 1) b = 3; | |
7996 | return b; | |
7997 | } | |
7998 | ||
7999 | // EVENT HANDLING | |
8000 | ||
8001 | // Lightweight event framework. on/off also work on DOM nodes, | |
8002 | // registering native DOM handlers. | |
8003 | ||
8004 | var on = CodeMirror.on = function(emitter, type, f) { | |
8005 | if (emitter.addEventListener) | |
8006 | emitter.addEventListener(type, f, false); | |
8007 | else if (emitter.attachEvent) | |
8008 | emitter.attachEvent("on" + type, f); | |
8009 | else { | |
8010 | var map = emitter._handlers || (emitter._handlers = {}); | |
8011 | var arr = map[type] || (map[type] = []); | |
8012 | arr.push(f); | |
8013 | } | |
8014 | }; | |
8015 | ||
8016 | var off = CodeMirror.off = function(emitter, type, f) { | |
8017 | if (emitter.removeEventListener) | |
8018 | emitter.removeEventListener(type, f, false); | |
8019 | else if (emitter.detachEvent) | |
8020 | emitter.detachEvent("on" + type, f); | |
8021 | else { | |
8022 | var arr = emitter._handlers && emitter._handlers[type]; | |
8023 | if (!arr) return; | |
8024 | for (var i = 0; i < arr.length; ++i) | |
8025 | if (arr[i] == f) { arr.splice(i, 1); break; } | |
8026 | } | |
8027 | }; | |
8028 | ||
8029 | var signal = CodeMirror.signal = function(emitter, type /*, values...*/) { | |
8030 | var arr = emitter._handlers && emitter._handlers[type]; | |
8031 | if (!arr) return; | |
8032 | var args = Array.prototype.slice.call(arguments, 2); | |
8033 | for (var i = 0; i < arr.length; ++i) arr[i].apply(null, args); | |
8034 | }; | |
8035 | ||
8036 | var orphanDelayedCallbacks = null; | |
8037 | ||
8038 | // Often, we want to signal events at a point where we are in the | |
8039 | // middle of some work, but don't want the handler to start calling | |
8040 | // other methods on the editor, which might be in an inconsistent | |
8041 | // state or simply not expect any other events to happen. | |
8042 | // signalLater looks whether there are any handlers, and schedules | |
8043 | // them to be executed when the last operation ends, or, if no | |
8044 | // operation is active, when a timeout fires. | |
8045 | function signalLater(emitter, type /*, values...*/) { | |
8046 | var arr = emitter._handlers && emitter._handlers[type]; | |
8047 | if (!arr) return; | |
8048 | var args = Array.prototype.slice.call(arguments, 2), list; | |
8049 | if (operationGroup) { | |
8050 | list = operationGroup.delayedCallbacks; | |
8051 | } else if (orphanDelayedCallbacks) { | |
8052 | list = orphanDelayedCallbacks; | |
8053 | } else { | |
8054 | list = orphanDelayedCallbacks = []; | |
8055 | setTimeout(fireOrphanDelayed, 0); | |
8056 | } | |
8057 | function bnd(f) {return function(){f.apply(null, args);};}; | |
8058 | for (var i = 0; i < arr.length; ++i) | |
8059 | list.push(bnd(arr[i])); | |
8060 | } | |
8061 | ||
8062 | function fireOrphanDelayed() { | |
8063 | var delayed = orphanDelayedCallbacks; | |
8064 | orphanDelayedCallbacks = null; | |
8065 | for (var i = 0; i < delayed.length; ++i) delayed[i](); | |
8066 | } | |
8067 | ||
8068 | // The DOM events that CodeMirror handles can be overridden by | |
8069 | // registering a (non-DOM) handler on the editor for the event name, | |
8070 | // and preventDefault-ing the event in that handler. | |
8071 | function signalDOMEvent(cm, e, override) { | |
8072 | if (typeof e == "string") | |
8073 | e = {type: e, preventDefault: function() { this.defaultPrevented = true; }}; | |
8074 | signal(cm, override || e.type, cm, e); | |
8075 | return e_defaultPrevented(e) || e.codemirrorIgnore; | |
8076 | } | |
8077 | ||
8078 | function signalCursorActivity(cm) { | |
8079 | var arr = cm._handlers && cm._handlers.cursorActivity; | |
8080 | if (!arr) return; | |
8081 | var set = cm.curOp.cursorActivityHandlers || (cm.curOp.cursorActivityHandlers = []); | |
8082 | for (var i = 0; i < arr.length; ++i) if (indexOf(set, arr[i]) == -1) | |
8083 | set.push(arr[i]); | |
8084 | } | |
8085 | ||
8086 | function hasHandler(emitter, type) { | |
8087 | var arr = emitter._handlers && emitter._handlers[type]; | |
8088 | return arr && arr.length > 0; | |
8089 | } | |
8090 | ||
8091 | // Add on and off methods to a constructor's prototype, to make | |
8092 | // registering events on such objects more convenient. | |
8093 | function eventMixin(ctor) { | |
8094 | ctor.prototype.on = function(type, f) {on(this, type, f);}; | |
8095 | ctor.prototype.off = function(type, f) {off(this, type, f);}; | |
8096 | } | |
8097 | ||
8098 | // MISC UTILITIES | |
8099 | ||
8100 | // Number of pixels added to scroller and sizer to hide scrollbar | |
8101 | var scrollerGap = 30; | |
8102 | ||
8103 | // Returned or thrown by various protocols to signal 'I'm not | |
8104 | // handling this'. | |
8105 | var Pass = CodeMirror.Pass = {toString: function(){return "CodeMirror.Pass";}}; | |
8106 | ||
8107 | // Reused option objects for setSelection & friends | |
8108 | var sel_dontScroll = {scroll: false}, sel_mouse = {origin: "*mouse"}, sel_move = {origin: "+move"}; | |
8109 | ||
8110 | function Delayed() {this.id = null;} | |
8111 | Delayed.prototype.set = function(ms, f) { | |
8112 | clearTimeout(this.id); | |
8113 | this.id = setTimeout(f, ms); | |
8114 | }; | |
8115 | ||
8116 | // Counts the column offset in a string, taking tabs into account. | |
8117 | // Used mostly to find indentation. | |
8118 | var countColumn = CodeMirror.countColumn = function(string, end, tabSize, startIndex, startValue) { | |
8119 | if (end == null) { | |
8120 | end = string.search(/[^\s\u00a0]/); | |
8121 | if (end == -1) end = string.length; | |
8122 | } | |
8123 | for (var i = startIndex || 0, n = startValue || 0;;) { | |
8124 | var nextTab = string.indexOf("\t", i); | |
8125 | if (nextTab < 0 || nextTab >= end) | |
8126 | return n + (end - i); | |
8127 | n += nextTab - i; | |
8128 | n += tabSize - (n % tabSize); | |
8129 | i = nextTab + 1; | |
8130 | } | |
8131 | }; | |
8132 | ||
8133 | // The inverse of countColumn -- find the offset that corresponds to | |
8134 | // a particular column. | |
8135 | function findColumn(string, goal, tabSize) { | |
8136 | for (var pos = 0, col = 0;;) { | |
8137 | var nextTab = string.indexOf("\t", pos); | |
8138 | if (nextTab == -1) nextTab = string.length; | |
8139 | var skipped = nextTab - pos; | |
8140 | if (nextTab == string.length || col + skipped >= goal) | |
8141 | return pos + Math.min(skipped, goal - col); | |
8142 | col += nextTab - pos; | |
8143 | col += tabSize - (col % tabSize); | |
8144 | pos = nextTab + 1; | |
8145 | if (col >= goal) return pos; | |
8146 | } | |
8147 | } | |
8148 | ||
8149 | var spaceStrs = [""]; | |
8150 | function spaceStr(n) { | |
8151 | while (spaceStrs.length <= n) | |
8152 | spaceStrs.push(lst(spaceStrs) + " "); | |
8153 | return spaceStrs[n]; | |
8154 | } | |
8155 | ||
8156 | function lst(arr) { return arr[arr.length-1]; } | |
8157 | ||
8158 | var selectInput = function(node) { node.select(); }; | |
8159 | if (ios) // Mobile Safari apparently has a bug where select() is broken. | |
8160 | selectInput = function(node) { node.selectionStart = 0; node.selectionEnd = node.value.length; }; | |
8161 | else if (ie) // Suppress mysterious IE10 errors | |
8162 | selectInput = function(node) { try { node.select(); } catch(_e) {} }; | |
8163 | ||
8164 | function indexOf(array, elt) { | |
8165 | for (var i = 0; i < array.length; ++i) | |
8166 | if (array[i] == elt) return i; | |
8167 | return -1; | |
8168 | } | |
8169 | function map(array, f) { | |
8170 | var out = []; | |
8171 | for (var i = 0; i < array.length; i++) out[i] = f(array[i], i); | |
8172 | return out; | |
8173 | } | |
8174 | ||
8175 | function nothing() {} | |
8176 | ||
8177 | function createObj(base, props) { | |
8178 | var inst; | |
8179 | if (Object.create) { | |
8180 | inst = Object.create(base); | |
8181 | } else { | |
8182 | nothing.prototype = base; | |
8183 | inst = new nothing(); | |
8184 | } | |
8185 | if (props) copyObj(props, inst); | |
8186 | return inst; | |
8187 | }; | |
8188 | ||
8189 | function copyObj(obj, target, overwrite) { | |
8190 | if (!target) target = {}; | |
8191 | for (var prop in obj) | |
8192 | if (obj.hasOwnProperty(prop) && (overwrite !== false || !target.hasOwnProperty(prop))) | |
8193 | target[prop] = obj[prop]; | |
8194 | return target; | |
8195 | } | |
8196 | ||
8197 | function bind(f) { | |
8198 | var args = Array.prototype.slice.call(arguments, 1); | |
8199 | return function(){return f.apply(null, args);}; | |
8200 | } | |
8201 | ||
8202 | var nonASCIISingleCaseWordChar = /[\u00df\u0587\u0590-\u05f4\u0600-\u06ff\u3040-\u309f\u30a0-\u30ff\u3400-\u4db5\u4e00-\u9fcc\uac00-\ud7af]/; | |
8203 | var isWordCharBasic = CodeMirror.isWordChar = function(ch) { | |
8204 | return /\w/.test(ch) || ch > "\x80" && | |
8205 | (ch.toUpperCase() != ch.toLowerCase() || nonASCIISingleCaseWordChar.test(ch)); | |
8206 | }; | |
8207 | function isWordChar(ch, helper) { | |
8208 | if (!helper) return isWordCharBasic(ch); | |
8209 | if (helper.source.indexOf("\\w") > -1 && isWordCharBasic(ch)) return true; | |
8210 | return helper.test(ch); | |
8211 | } | |
8212 | ||
8213 | function isEmpty(obj) { | |
8214 | for (var n in obj) if (obj.hasOwnProperty(n) && obj[n]) return false; | |
8215 | return true; | |
8216 | } | |
8217 | ||
8218 | // Extending unicode characters. A series of a non-extending char + | |
8219 | // any number of extending chars is treated as a single unit as far | |
8220 | // as editing and measuring is concerned. This is not fully correct, | |
8221 | // since some scripts/fonts/browsers also treat other configurations | |
8222 | // of code points as a group. | |
8223 | var extendingChars = /[\u0300-\u036f\u0483-\u0489\u0591-\u05bd\u05bf\u05c1\u05c2\u05c4\u05c5\u05c7\u0610-\u061a\u064b-\u065e\u0670\u06d6-\u06dc\u06de-\u06e4\u06e7\u06e8\u06ea-\u06ed\u0711\u0730-\u074a\u07a6-\u07b0\u07eb-\u07f3\u0816-\u0819\u081b-\u0823\u0825-\u0827\u0829-\u082d\u0900-\u0902\u093c\u0941-\u0948\u094d\u0951-\u0955\u0962\u0963\u0981\u09bc\u09be\u09c1-\u09c4\u09cd\u09d7\u09e2\u09e3\u0a01\u0a02\u0a3c\u0a41\u0a42\u0a47\u0a48\u0a4b-\u0a4d\u0a51\u0a70\u0a71\u0a75\u0a81\u0a82\u0abc\u0ac1-\u0ac5\u0ac7\u0ac8\u0acd\u0ae2\u0ae3\u0b01\u0b3c\u0b3e\u0b3f\u0b41-\u0b44\u0b4d\u0b56\u0b57\u0b62\u0b63\u0b82\u0bbe\u0bc0\u0bcd\u0bd7\u0c3e-\u0c40\u0c46-\u0c48\u0c4a-\u0c4d\u0c55\u0c56\u0c62\u0c63\u0cbc\u0cbf\u0cc2\u0cc6\u0ccc\u0ccd\u0cd5\u0cd6\u0ce2\u0ce3\u0d3e\u0d41-\u0d44\u0d4d\u0d57\u0d62\u0d63\u0dca\u0dcf\u0dd2-\u0dd4\u0dd6\u0ddf\u0e31\u0e34-\u0e3a\u0e47-\u0e4e\u0eb1\u0eb4-\u0eb9\u0ebb\u0ebc\u0ec8-\u0ecd\u0f18\u0f19\u0f35\u0f37\u0f39\u0f71-\u0f7e\u0f80-\u0f84\u0f86\u0f87\u0f90-\u0f97\u0f99-\u0fbc\u0fc6\u102d-\u1030\u1032-\u1037\u1039\u103a\u103d\u103e\u1058\u1059\u105e-\u1060\u1071-\u1074\u1082\u1085\u1086\u108d\u109d\u135f\u1712-\u1714\u1732-\u1734\u1752\u1753\u1772\u1773\u17b7-\u17bd\u17c6\u17c9-\u17d3\u17dd\u180b-\u180d\u18a9\u1920-\u1922\u1927\u1928\u1932\u1939-\u193b\u1a17\u1a18\u1a56\u1a58-\u1a5e\u1a60\u1a62\u1a65-\u1a6c\u1a73-\u1a7c\u1a7f\u1b00-\u1b03\u1b34\u1b36-\u1b3a\u1b3c\u1b42\u1b6b-\u1b73\u1b80\u1b81\u1ba2-\u1ba5\u1ba8\u1ba9\u1c2c-\u1c33\u1c36\u1c37\u1cd0-\u1cd2\u1cd4-\u1ce0\u1ce2-\u1ce8\u1ced\u1dc0-\u1de6\u1dfd-\u1dff\u200c\u200d\u20d0-\u20f0\u2cef-\u2cf1\u2de0-\u2dff\u302a-\u302f\u3099\u309a\ua66f-\ua672\ua67c\ua67d\ua6f0\ua6f1\ua802\ua806\ua80b\ua825\ua826\ua8c4\ua8e0-\ua8f1\ua926-\ua92d\ua947-\ua951\ua980-\ua982\ua9b3\ua9b6-\ua9b9\ua9bc\uaa29-\uaa2e\uaa31\uaa32\uaa35\uaa36\uaa43\uaa4c\uaab0\uaab2-\uaab4\uaab7\uaab8\uaabe\uaabf\uaac1\uabe5\uabe8\uabed\udc00-\udfff\ufb1e\ufe00-\ufe0f\ufe20-\ufe26\uff9e\uff9f]/; | |
8224 | function isExtendingChar(ch) { return ch.charCodeAt(0) >= 768 && extendingChars.test(ch); } | |
8225 | ||
8226 | // DOM UTILITIES | |
8227 | ||
8228 | function elt(tag, content, className, style) { | |
8229 | var e = document.createElement(tag); | |
8230 | if (className) e.className = className; | |
8231 | if (style) e.style.cssText = style; | |
8232 | if (typeof content == "string") e.appendChild(document.createTextNode(content)); | |
8233 | else if (content) for (var i = 0; i < content.length; ++i) e.appendChild(content[i]); | |
8234 | return e; | |
8235 | } | |
8236 | ||
8237 | var range; | |
8238 | if (document.createRange) range = function(node, start, end, endNode) { | |
8239 | var r = document.createRange(); | |
8240 | r.setEnd(endNode || node, end); | |
8241 | r.setStart(node, start); | |
8242 | return r; | |
8243 | }; | |
8244 | else range = function(node, start, end) { | |
8245 | var r = document.body.createTextRange(); | |
8246 | try { r.moveToElementText(node.parentNode); } | |
8247 | catch(e) { return r; } | |
8248 | r.collapse(true); | |
8249 | r.moveEnd("character", end); | |
8250 | r.moveStart("character", start); | |
8251 | return r; | |
8252 | }; | |
8253 | ||
8254 | function removeChildren(e) { | |
8255 | for (var count = e.childNodes.length; count > 0; --count) | |
8256 | e.removeChild(e.firstChild); | |
8257 | return e; | |
8258 | } | |
8259 | ||
8260 | function removeChildrenAndAdd(parent, e) { | |
8261 | return removeChildren(parent).appendChild(e); | |
8262 | } | |
8263 | ||
8264 | var contains = CodeMirror.contains = function(parent, child) { | |
8265 | if (child.nodeType == 3) // Android browser always returns false when child is a textnode | |
8266 | child = child.parentNode; | |
8267 | if (parent.contains) | |
8268 | return parent.contains(child); | |
8269 | do { | |
8270 | if (child.nodeType == 11) child = child.host; | |
8271 | if (child == parent) return true; | |
8272 | } while (child = child.parentNode); | |
8273 | }; | |
8274 | ||
8275 | function activeElt() { return document.activeElement; } | |
8276 | // Older versions of IE throws unspecified error when touching | |
8277 | // document.activeElement in some cases (during loading, in iframe) | |
8278 | if (ie && ie_version < 11) activeElt = function() { | |
8279 | try { return document.activeElement; } | |
8280 | catch(e) { return document.body; } | |
8281 | }; | |
8282 | ||
8283 | function classTest(cls) { return new RegExp("(^|\\s)" + cls + "(?:$|\\s)\\s*"); } | |
8284 | var rmClass = CodeMirror.rmClass = function(node, cls) { | |
8285 | var current = node.className; | |
8286 | var match = classTest(cls).exec(current); | |
8287 | if (match) { | |
8288 | var after = current.slice(match.index + match[0].length); | |
8289 | node.className = current.slice(0, match.index) + (after ? match[1] + after : ""); | |
8290 | } | |
8291 | }; | |
8292 | var addClass = CodeMirror.addClass = function(node, cls) { | |
8293 | var current = node.className; | |
8294 | if (!classTest(cls).test(current)) node.className += (current ? " " : "") + cls; | |
8295 | }; | |
8296 | function joinClasses(a, b) { | |
8297 | var as = a.split(" "); | |
8298 | for (var i = 0; i < as.length; i++) | |
8299 | if (as[i] && !classTest(as[i]).test(b)) b += " " + as[i]; | |
8300 | return b; | |
8301 | } | |
8302 | ||
8303 | // WINDOW-WIDE EVENTS | |
8304 | ||
8305 | // These must be handled carefully, because naively registering a | |
8306 | // handler for each editor will cause the editors to never be | |
8307 | // garbage collected. | |
8308 | ||
8309 | function forEachCodeMirror(f) { | |
8310 | if (!document.body.getElementsByClassName) return; | |
8311 | var byClass = document.body.getElementsByClassName("CodeMirror"); | |
8312 | for (var i = 0; i < byClass.length; i++) { | |
8313 | var cm = byClass[i].CodeMirror; | |
8314 | if (cm) f(cm); | |
8315 | } | |
8316 | } | |
8317 | ||
8318 | var globalsRegistered = false; | |
8319 | function ensureGlobalHandlers() { | |
8320 | if (globalsRegistered) return; | |
8321 | registerGlobalHandlers(); | |
8322 | globalsRegistered = true; | |
8323 | } | |
8324 | function registerGlobalHandlers() { | |
8325 | // When the window resizes, we need to refresh active editors. | |
8326 | var resizeTimer; | |
8327 | on(window, "resize", function() { | |
8328 | if (resizeTimer == null) resizeTimer = setTimeout(function() { | |
8329 | resizeTimer = null; | |
8330 | forEachCodeMirror(onResize); | |
8331 | }, 100); | |
8332 | }); | |
8333 | // When the window loses focus, we want to show the editor as blurred | |
8334 | on(window, "blur", function() { | |
8335 | forEachCodeMirror(onBlur); | |
8336 | }); | |
8337 | } | |
8338 | ||
8339 | // FEATURE DETECTION | |
8340 | ||
8341 | // Detect drag-and-drop | |
8342 | var dragAndDrop = function() { | |
8343 | // There is *some* kind of drag-and-drop support in IE6-8, but I | |
8344 | // couldn't get it to work yet. | |
8345 | if (ie && ie_version < 9) return false; | |
8346 | var div = elt('div'); | |
8347 | return "draggable" in div || "dragDrop" in div; | |
8348 | }(); | |
8349 | ||
8350 | var zwspSupported; | |
8351 | function zeroWidthElement(measure) { | |
8352 | if (zwspSupported == null) { | |
8353 | var test = elt("span", "\u200b"); | |
8354 | removeChildrenAndAdd(measure, elt("span", [test, document.createTextNode("x")])); | |
8355 | if (measure.firstChild.offsetHeight != 0) | |
8356 | zwspSupported = test.offsetWidth <= 1 && test.offsetHeight > 2 && !(ie && ie_version < 8); | |
8357 | } | |
8358 | var node = zwspSupported ? elt("span", "\u200b") : | |
8359 | elt("span", "\u00a0", null, "display: inline-block; width: 1px; margin-right: -1px"); | |
8360 | node.setAttribute("cm-text", ""); | |
8361 | return node; | |
8362 | } | |
8363 | ||
8364 | // Feature-detect IE's crummy client rect reporting for bidi text | |
8365 | var badBidiRects; | |
8366 | function hasBadBidiRects(measure) { | |
8367 | if (badBidiRects != null) return badBidiRects; | |
8368 | var txt = removeChildrenAndAdd(measure, document.createTextNode("A\u062eA")); | |
8369 | var r0 = range(txt, 0, 1).getBoundingClientRect(); | |
8370 | if (!r0 || r0.left == r0.right) return false; // Safari returns null in some cases (#2780) | |
8371 | var r1 = range(txt, 1, 2).getBoundingClientRect(); | |
8372 | return badBidiRects = (r1.right - r0.right < 3); | |
8373 | } | |
8374 | ||
8375 | // See if "".split is the broken IE version, if so, provide an | |
8376 | // alternative way to split lines. | |
8377 | var splitLines = CodeMirror.splitLines = "\n\nb".split(/\n/).length != 3 ? function(string) { | |
8378 | var pos = 0, result = [], l = string.length; | |
8379 | while (pos <= l) { | |
8380 | var nl = string.indexOf("\n", pos); | |
8381 | if (nl == -1) nl = string.length; | |
8382 | var line = string.slice(pos, string.charAt(nl - 1) == "\r" ? nl - 1 : nl); | |
8383 | var rt = line.indexOf("\r"); | |
8384 | if (rt != -1) { | |
8385 | result.push(line.slice(0, rt)); | |
8386 | pos += rt + 1; | |
8387 | } else { | |
8388 | result.push(line); | |
8389 | pos = nl + 1; | |
8390 | } | |
8391 | } | |
8392 | return result; | |
8393 | } : function(string){return string.split(/\r\n?|\n/);}; | |
8394 | ||
8395 | var hasSelection = window.getSelection ? function(te) { | |
8396 | try { return te.selectionStart != te.selectionEnd; } | |
8397 | catch(e) { return false; } | |
8398 | } : function(te) { | |
8399 | try {var range = te.ownerDocument.selection.createRange();} | |
8400 | catch(e) {} | |
8401 | if (!range || range.parentElement() != te) return false; | |
8402 | return range.compareEndPoints("StartToEnd", range) != 0; | |
8403 | }; | |
8404 | ||
8405 | var hasCopyEvent = (function() { | |
8406 | var e = elt("div"); | |
8407 | if ("oncopy" in e) return true; | |
8408 | e.setAttribute("oncopy", "return;"); | |
8409 | return typeof e.oncopy == "function"; | |
8410 | })(); | |
8411 | ||
8412 | var badZoomedRects = null; | |
8413 | function hasBadZoomedRects(measure) { | |
8414 | if (badZoomedRects != null) return badZoomedRects; | |
8415 | var node = removeChildrenAndAdd(measure, elt("span", "x")); | |
8416 | var normal = node.getBoundingClientRect(); | |
8417 | var fromRange = range(node, 0, 1).getBoundingClientRect(); | |
8418 | return badZoomedRects = Math.abs(normal.left - fromRange.left) > 1; | |
8419 | } | |
8420 | ||
8421 | // KEY NAMES | |
8422 | ||
8423 | var keyNames = {3: "Enter", 8: "Backspace", 9: "Tab", 13: "Enter", 16: "Shift", 17: "Ctrl", 18: "Alt", | |
8424 | 19: "Pause", 20: "CapsLock", 27: "Esc", 32: "Space", 33: "PageUp", 34: "PageDown", 35: "End", | |
8425 | 36: "Home", 37: "Left", 38: "Up", 39: "Right", 40: "Down", 44: "PrintScrn", 45: "Insert", | |
8426 | 46: "Delete", 59: ";", 61: "=", 91: "Mod", 92: "Mod", 93: "Mod", 107: "=", 109: "-", 127: "Delete", | |
8427 | 173: "-", 186: ";", 187: "=", 188: ",", 189: "-", 190: ".", 191: "/", 192: "`", 219: "[", 220: "\\", | |
8428 | 221: "]", 222: "'", 63232: "Up", 63233: "Down", 63234: "Left", 63235: "Right", 63272: "Delete", | |
8429 | 63273: "Home", 63275: "End", 63276: "PageUp", 63277: "PageDown", 63302: "Insert"}; | |
8430 | CodeMirror.keyNames = keyNames; | |
8431 | (function() { | |
8432 | // Number keys | |
8433 | for (var i = 0; i < 10; i++) keyNames[i + 48] = keyNames[i + 96] = String(i); | |
8434 | // Alphabetic keys | |
8435 | for (var i = 65; i <= 90; i++) keyNames[i] = String.fromCharCode(i); | |
8436 | // Function keys | |
8437 | for (var i = 1; i <= 12; i++) keyNames[i + 111] = keyNames[i + 63235] = "F" + i; | |
8438 | })(); | |
8439 | ||
8440 | // BIDI HELPERS | |
8441 | ||
8442 | function iterateBidiSections(order, from, to, f) { | |
8443 | if (!order) return f(from, to, "ltr"); | |
8444 | var found = false; | |
8445 | for (var i = 0; i < order.length; ++i) { | |
8446 | var part = order[i]; | |
8447 | if (part.from < to && part.to > from || from == to && part.to == from) { | |
8448 | f(Math.max(part.from, from), Math.min(part.to, to), part.level == 1 ? "rtl" : "ltr"); | |
8449 | found = true; | |
8450 | } | |
8451 | } | |
8452 | if (!found) f(from, to, "ltr"); | |
8453 | } | |
8454 | ||
8455 | function bidiLeft(part) { return part.level % 2 ? part.to : part.from; } | |
8456 | function bidiRight(part) { return part.level % 2 ? part.from : part.to; } | |
8457 | ||
8458 | function lineLeft(line) { var order = getOrder(line); return order ? bidiLeft(order[0]) : 0; } | |
8459 | function lineRight(line) { | |
8460 | var order = getOrder(line); | |
8461 | if (!order) return line.text.length; | |
8462 | return bidiRight(lst(order)); | |
8463 | } | |
8464 | ||
8465 | function lineStart(cm, lineN) { | |
8466 | var line = getLine(cm.doc, lineN); | |
8467 | var visual = visualLine(line); | |
8468 | if (visual != line) lineN = lineNo(visual); | |
8469 | var order = getOrder(visual); | |
8470 | var ch = !order ? 0 : order[0].level % 2 ? lineRight(visual) : lineLeft(visual); | |
8471 | return Pos(lineN, ch); | |
8472 | } | |
8473 | function lineEnd(cm, lineN) { | |
8474 | var merged, line = getLine(cm.doc, lineN); | |
8475 | while (merged = collapsedSpanAtEnd(line)) { | |
8476 | line = merged.find(1, true).line; | |
8477 | lineN = null; | |
8478 | } | |
8479 | var order = getOrder(line); | |
8480 | var ch = !order ? line.text.length : order[0].level % 2 ? lineLeft(line) : lineRight(line); | |
8481 | return Pos(lineN == null ? lineNo(line) : lineN, ch); | |
8482 | } | |
8483 | function lineStartSmart(cm, pos) { | |
8484 | var start = lineStart(cm, pos.line); | |
8485 | var line = getLine(cm.doc, start.line); | |
8486 | var order = getOrder(line); | |
8487 | if (!order || order[0].level == 0) { | |
8488 | var firstNonWS = Math.max(0, line.text.search(/\S/)); | |
8489 | var inWS = pos.line == start.line && pos.ch <= firstNonWS && pos.ch; | |
8490 | return Pos(start.line, inWS ? 0 : firstNonWS); | |
8491 | } | |
8492 | return start; | |
8493 | } | |
8494 | ||
8495 | function compareBidiLevel(order, a, b) { | |
8496 | var linedir = order[0].level; | |
8497 | if (a == linedir) return true; | |
8498 | if (b == linedir) return false; | |
8499 | return a < b; | |
8500 | } | |
8501 | var bidiOther; | |
8502 | function getBidiPartAt(order, pos) { | |
8503 | bidiOther = null; | |
8504 | for (var i = 0, found; i < order.length; ++i) { | |
8505 | var cur = order[i]; | |
8506 | if (cur.from < pos && cur.to > pos) return i; | |
8507 | if ((cur.from == pos || cur.to == pos)) { | |
8508 | if (found == null) { | |
8509 | found = i; | |
8510 | } else if (compareBidiLevel(order, cur.level, order[found].level)) { | |
8511 | if (cur.from != cur.to) bidiOther = found; | |
8512 | return i; | |
8513 | } else { | |
8514 | if (cur.from != cur.to) bidiOther = i; | |
8515 | return found; | |
8516 | } | |
8517 | } | |
8518 | } | |
8519 | return found; | |
8520 | } | |
8521 | ||
8522 | function moveInLine(line, pos, dir, byUnit) { | |
8523 | if (!byUnit) return pos + dir; | |
8524 | do pos += dir; | |
8525 | while (pos > 0 && isExtendingChar(line.text.charAt(pos))); | |
8526 | return pos; | |
8527 | } | |
8528 | ||
8529 | // This is needed in order to move 'visually' through bi-directional | |
8530 | // text -- i.e., pressing left should make the cursor go left, even | |
8531 | // when in RTL text. The tricky part is the 'jumps', where RTL and | |
8532 | // LTR text touch each other. This often requires the cursor offset | |
8533 | // to move more than one unit, in order to visually move one unit. | |
8534 | function moveVisually(line, start, dir, byUnit) { | |
8535 | var bidi = getOrder(line); | |
8536 | if (!bidi) return moveLogically(line, start, dir, byUnit); | |
8537 | var pos = getBidiPartAt(bidi, start), part = bidi[pos]; | |
8538 | var target = moveInLine(line, start, part.level % 2 ? -dir : dir, byUnit); | |
8539 | ||
8540 | for (;;) { | |
8541 | if (target > part.from && target < part.to) return target; | |
8542 | if (target == part.from || target == part.to) { | |
8543 | if (getBidiPartAt(bidi, target) == pos) return target; | |
8544 | part = bidi[pos += dir]; | |
8545 | return (dir > 0) == part.level % 2 ? part.to : part.from; | |
8546 | } else { | |
8547 | part = bidi[pos += dir]; | |
8548 | if (!part) return null; | |
8549 | if ((dir > 0) == part.level % 2) | |
8550 | target = moveInLine(line, part.to, -1, byUnit); | |
8551 | else | |
8552 | target = moveInLine(line, part.from, 1, byUnit); | |
8553 | } | |
8554 | } | |
8555 | } | |
8556 | ||
8557 | function moveLogically(line, start, dir, byUnit) { | |
8558 | var target = start + dir; | |
8559 | if (byUnit) while (target > 0 && isExtendingChar(line.text.charAt(target))) target += dir; | |
8560 | return target < 0 || target > line.text.length ? null : target; | |
8561 | } | |
8562 | ||
8563 | // Bidirectional ordering algorithm | |
8564 | // See http://unicode.org/reports/tr9/tr9-13.html for the algorithm | |
8565 | // that this (partially) implements. | |
8566 | ||
8567 | // One-char codes used for character types: | |
8568 | // L (L): Left-to-Right | |
8569 | // R (R): Right-to-Left | |
8570 | // r (AL): Right-to-Left Arabic | |
8571 | // 1 (EN): European Number | |
8572 | // + (ES): European Number Separator | |
8573 | // % (ET): European Number Terminator | |
8574 | // n (AN): Arabic Number | |
8575 | // , (CS): Common Number Separator | |
8576 | // m (NSM): Non-Spacing Mark | |
8577 | // b (BN): Boundary Neutral | |
8578 | // s (B): Paragraph Separator | |
8579 | // t (S): Segment Separator | |
8580 | // w (WS): Whitespace | |
8581 | // N (ON): Other Neutrals | |
8582 | ||
8583 | // Returns null if characters are ordered as they appear | |
8584 | // (left-to-right), or an array of sections ({from, to, level} | |
8585 | // objects) in the order in which they occur visually. | |
8586 | var bidiOrdering = (function() { | |
8587 | // Character types for codepoints 0 to 0xff | |
8588 | var lowTypes = "bbbbbbbbbtstwsbbbbbbbbbbbbbbssstwNN%%%NNNNNN,N,N1111111111NNNNNNNLLLLLLLLLLLLLLLLLLLLLLLLLLNNNNNNLLLLLLLLLLLLLLLLLLLLLLLLLLNNNNbbbbbbsbbbbbbbbbbbbbbbbbbbbbbbbbb,N%%%%NNNNLNNNNN%%11NLNNN1LNNNNNLLLLLLLLLLLLLLLLLLLLLLLNLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLN"; | |
8589 | // Character types for codepoints 0x600 to 0x6ff | |
8590 | var arabicTypes = "rrrrrrrrrrrr,rNNmmmmmmrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrmmmmmmmmmmmmmmrrrrrrrnnnnnnnnnn%nnrrrmrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrmmmmmmmmmmmmmmmmmmmNmmmm"; | |
8591 | function charType(code) { | |
8592 | if (code <= 0xf7) return lowTypes.charAt(code); | |
8593 | else if (0x590 <= code && code <= 0x5f4) return "R"; | |
8594 | else if (0x600 <= code && code <= 0x6ed) return arabicTypes.charAt(code - 0x600); | |
8595 | else if (0x6ee <= code && code <= 0x8ac) return "r"; | |
8596 | else if (0x2000 <= code && code <= 0x200b) return "w"; | |
8597 | else if (code == 0x200c) return "b"; | |
8598 | else return "L"; | |
8599 | } | |
8600 | ||
8601 | var bidiRE = /[\u0590-\u05f4\u0600-\u06ff\u0700-\u08ac]/; | |
8602 | var isNeutral = /[stwN]/, isStrong = /[LRr]/, countsAsLeft = /[Lb1n]/, countsAsNum = /[1n]/; | |
8603 | // Browsers seem to always treat the boundaries of block elements as being L. | |
8604 | var outerType = "L"; | |
8605 | ||
8606 | function BidiSpan(level, from, to) { | |
8607 | this.level = level; | |
8608 | this.from = from; this.to = to; | |
8609 | } | |
8610 | ||
8611 | return function(str) { | |
8612 | if (!bidiRE.test(str)) return false; | |
8613 | var len = str.length, types = []; | |
8614 | for (var i = 0, type; i < len; ++i) | |
8615 | types.push(type = charType(str.charCodeAt(i))); | |
8616 | ||
8617 | // W1. Examine each non-spacing mark (NSM) in the level run, and | |
8618 | // change the type of the NSM to the type of the previous | |
8619 | // character. If the NSM is at the start of the level run, it will | |
8620 | // get the type of sor. | |
8621 | for (var i = 0, prev = outerType; i < len; ++i) { | |
8622 | var type = types[i]; | |
8623 | if (type == "m") types[i] = prev; | |
8624 | else prev = type; | |
8625 | } | |
8626 | ||
8627 | // W2. Search backwards from each instance of a European number | |
8628 | // until the first strong type (R, L, AL, or sor) is found. If an | |
8629 | // AL is found, change the type of the European number to Arabic | |
8630 | // number. | |
8631 | // W3. Change all ALs to R. | |
8632 | for (var i = 0, cur = outerType; i < len; ++i) { | |
8633 | var type = types[i]; | |
8634 | if (type == "1" && cur == "r") types[i] = "n"; | |
8635 | else if (isStrong.test(type)) { cur = type; if (type == "r") types[i] = "R"; } | |
8636 | } | |
8637 | ||
8638 | // W4. A single European separator between two European numbers | |
8639 | // changes to a European number. A single common separator between | |
8640 | // two numbers of the same type changes to that type. | |
8641 | for (var i = 1, prev = types[0]; i < len - 1; ++i) { | |
8642 | var type = types[i]; | |
8643 | if (type == "+" && prev == "1" && types[i+1] == "1") types[i] = "1"; | |
8644 | else if (type == "," && prev == types[i+1] && | |
8645 | (prev == "1" || prev == "n")) types[i] = prev; | |
8646 | prev = type; | |
8647 | } | |
8648 | ||
8649 | // W5. A sequence of European terminators adjacent to European | |
8650 | // numbers changes to all European numbers. | |
8651 | // W6. Otherwise, separators and terminators change to Other | |
8652 | // Neutral. | |
8653 | for (var i = 0; i < len; ++i) { | |
8654 | var type = types[i]; | |
8655 | if (type == ",") types[i] = "N"; | |
8656 | else if (type == "%") { | |
8657 | for (var end = i + 1; end < len && types[end] == "%"; ++end) {} | |
8658 | var replace = (i && types[i-1] == "!") || (end < len && types[end] == "1") ? "1" : "N"; | |
8659 | for (var j = i; j < end; ++j) types[j] = replace; | |
8660 | i = end - 1; | |
8661 | } | |
8662 | } | |
8663 | ||
8664 | // W7. Search backwards from each instance of a European number | |
8665 | // until the first strong type (R, L, or sor) is found. If an L is | |
8666 | // found, then change the type of the European number to L. | |
8667 | for (var i = 0, cur = outerType; i < len; ++i) { | |
8668 | var type = types[i]; | |
8669 | if (cur == "L" && type == "1") types[i] = "L"; | |
8670 | else if (isStrong.test(type)) cur = type; | |
8671 | } | |
8672 | ||
8673 | // N1. A sequence of neutrals takes the direction of the | |
8674 | // surrounding strong text if the text on both sides has the same | |
8675 | // direction. European and Arabic numbers act as if they were R in | |
8676 | // terms of their influence on neutrals. Start-of-level-run (sor) | |
8677 | // and end-of-level-run (eor) are used at level run boundaries. | |
8678 | // N2. Any remaining neutrals take the embedding direction. | |
8679 | for (var i = 0; i < len; ++i) { | |
8680 | if (isNeutral.test(types[i])) { | |
8681 | for (var end = i + 1; end < len && isNeutral.test(types[end]); ++end) {} | |
8682 | var before = (i ? types[i-1] : outerType) == "L"; | |
8683 | var after = (end < len ? types[end] : outerType) == "L"; | |
8684 | var replace = before || after ? "L" : "R"; | |
8685 | for (var j = i; j < end; ++j) types[j] = replace; | |
8686 | i = end - 1; | |
8687 | } | |
8688 | } | |
8689 | ||
8690 | // Here we depart from the documented algorithm, in order to avoid | |
8691 | // building up an actual levels array. Since there are only three | |
8692 | // levels (0, 1, 2) in an implementation that doesn't take | |
8693 | // explicit embedding into account, we can build up the order on | |
8694 | // the fly, without following the level-based algorithm. | |
8695 | var order = [], m; | |
8696 | for (var i = 0; i < len;) { | |
8697 | if (countsAsLeft.test(types[i])) { | |
8698 | var start = i; | |
8699 | for (++i; i < len && countsAsLeft.test(types[i]); ++i) {} | |
8700 | order.push(new BidiSpan(0, start, i)); | |
8701 | } else { | |
8702 | var pos = i, at = order.length; | |
8703 | for (++i; i < len && types[i] != "L"; ++i) {} | |
8704 | for (var j = pos; j < i;) { | |
8705 | if (countsAsNum.test(types[j])) { | |
8706 | if (pos < j) order.splice(at, 0, new BidiSpan(1, pos, j)); | |
8707 | var nstart = j; | |
8708 | for (++j; j < i && countsAsNum.test(types[j]); ++j) {} | |
8709 | order.splice(at, 0, new BidiSpan(2, nstart, j)); | |
8710 | pos = j; | |
8711 | } else ++j; | |
8712 | } | |
8713 | if (pos < i) order.splice(at, 0, new BidiSpan(1, pos, i)); | |
8714 | } | |
8715 | } | |
8716 | if (order[0].level == 1 && (m = str.match(/^\s+/))) { | |
8717 | order[0].from = m[0].length; | |
8718 | order.unshift(new BidiSpan(0, 0, m[0].length)); | |
8719 | } | |
8720 | if (lst(order).level == 1 && (m = str.match(/\s+$/))) { | |
8721 | lst(order).to -= m[0].length; | |
8722 | order.push(new BidiSpan(0, len - m[0].length, len)); | |
8723 | } | |
8724 | if (order[0].level == 2) | |
8725 | order.unshift(new BidiSpan(1, order[0].to, order[0].to)); | |
8726 | if (order[0].level != lst(order).level) | |
8727 | order.push(new BidiSpan(order[0].level, len, len)); | |
8728 | ||
8729 | return order; | |
8730 | }; | |
8731 | })(); | |
8732 | ||
8733 | // THE END | |
8734 | ||
8735 | CodeMirror.version = "5.2.0"; | |
8736 | ||
8737 | return CodeMirror; | |
8738 | }); |