1 files changed, 344 insertions, 0 deletions

diff --git a/haddock-util.js b/haddock-util.js
new file mode 100644
index 0000000..9a6fccf
--- /dev/null
+++ b/haddock-util.js
@@ -0,0 +1,344 @@
+// Haddock JavaScript utilities
+
+var rspace = /\s\s+/g,
+          rtrim = /^\s+|\s+$/g;
+
+function spaced(s) { return (" " + s + " ").replace(rspace, " "); }
+function trim(s)   { return s.replace(rtrim, ""); }
+
+function hasClass(elem, value) {
+  var className = spaced(elem.className || "");
+  return className.indexOf( " " + value + " " ) >= 0;
+}
+
+function addClass(elem, value) {
+  var className = spaced(elem.className || "");
+  if ( className.indexOf( " " + value + " " ) < 0 ) {
+    elem.className = trim(className + " " + value);
+  }
+}
+
+function removeClass(elem, value) {
+  var className = spaced(elem.className || "");
+  className = className.replace(" " + value + " ", " ");
+  elem.className = trim(className);
+}
+
+function toggleClass(elem, valueOn, valueOff, bool) {
+  if (bool == null) { bool = ! hasClass(elem, valueOn); }
+  if (bool) {
+    removeClass(elem, valueOff);
+    addClass(elem, valueOn);
+  }
+  else {
+    removeClass(elem, valueOn);
+    addClass(elem, valueOff);
+  }
+  return bool;
+}
+
+
+function makeClassToggle(valueOn, valueOff)
+{
+  return function(elem, bool) {
+    return toggleClass(elem, valueOn, valueOff, bool);
+  }
+}
+
+toggleShow = makeClassToggle("show", "hide");
+toggleCollapser = makeClassToggle("collapser", "expander");
+
+function toggleSection(id)
+{
+  var b = toggleShow(document.getElementById("section." + id));
+  toggleCollapser(document.getElementById("control." + id), b);
+  rememberCollapsed(id, b);
+  return b;
+}
+
+var collapsed = {};
+function rememberCollapsed(id, b)
+{
+  if(b)
+    delete collapsed[id]
+  else
+    collapsed[id] = null;
+
+  var sections = [];
+  for(var i in collapsed)
+  {
+    if(collapsed.hasOwnProperty(i))
+      sections.push(i);
+  }
+  // cookie specific to this page; don't use setCookie which sets path=/
+  document.cookie = "collapsed=" + escape(sections.join('+'));
+}
+
+function restoreCollapsed()
+{
+  var cookie = getCookie("collapsed");
+  if(!cookie)
+    return;
+
+  var ids = cookie.split('+');
+  for(var i in ids)
+  {
+    if(document.getElementById("section." + ids[i]))
+      toggleSection(ids[i]);
+  }
+}
+
+function setCookie(name, value) {
+  document.cookie = name + "=" + escape(value) + ";path=/;";
+}
+
+function clearCookie(name) {
+  document.cookie = name + "=;path=/;expires=Thu, 01-Jan-1970 00:00:01 GMT;";
+}
+
+function getCookie(name) {
+  var nameEQ = name + "=";
+  var ca = document.cookie.split(';');
+  for(var i=0;i < ca.length;i++) {
+    var c = ca[i];
+    while (c.charAt(0)==' ') c = c.substring(1,c.length);
+    if (c.indexOf(nameEQ) == 0) {
+      return unescape(c.substring(nameEQ.length,c.length));
+    }
+  }
+  return null;
+}
+
+
+
+var max_results = 75; // 50 is not enough to search for map in the base libraries
+var shown_range = null;
+var last_search = null;
+
+function quick_search()
+{
+    perform_search(false);
+}
+
+function full_search()
+{
+    perform_search(true);
+}
+
+
+function perform_search(full)
+{
+    var text = document.getElementById("searchbox").value.toLowerCase();
+    if (text == last_search && !full) return;
+    last_search = text;
+    
+    var table = document.getElementById("indexlist");
+    var status = document.getElementById("searchmsg");
+    var children = table.firstChild.childNodes;
+    
+    // first figure out the first node with the prefix
+    var first = bisect(-1);
+    var last = (first == -1 ? -1 : bisect(1));
+
+    if (first == -1)
+    {
+        table.className = "";
+        status.innerHTML = "No results found, displaying all";
+    }
+    else if (first == 0 && last == children.length - 1)
+    {
+        table.className = "";
+        status.innerHTML = "";
+    }
+    else if (last - first >= max_results && !full)
+    {
+        table.className = "";
+        status.innerHTML = "More than " + max_results + ", press Search to display";
+    }
+    else
+    {
+        // decide what you need to clear/show
+        if (shown_range)
+            setclass(shown_range[0], shown_range[1], "indexrow");
+        setclass(first, last, "indexshow");
+        shown_range = [first, last];
+        table.className = "indexsearch";
+        status.innerHTML = "";
+    }
+
+    
+    function setclass(first, last, status)
+    {
+        for (var i = first; i <= last; i++)
+        {
+            children[i].className = status;
+        }
+    }
+    
+    
+    // do a binary search, treating 0 as ...
+    // return either -1 (no 0's found) or location of most far match
+    function bisect(dir)
+    {
+        var first = 0, finish = children.length - 1;
+        var mid, success = false;
+
+        while (finish - first > 3)
+        {
+            mid = Math.floor((finish + first) / 2);
+
+            var i = checkitem(mid);
+            if (i == 0) i = dir;
+            if (i == -1)
+                finish = mid;
+            else
+                first = mid;
+        }
+        var a = (dir == 1 ? first : finish);
+        var b = (dir == 1 ? finish : first);
+        for (var i = b; i != a - dir; i -= dir)
+        {
+            if (checkitem(i) == 0) return i;
+        }
+        return -1;
+    }    
+    
+    
+    // from an index, decide what the result is
+    // 0 = match, -1 is lower, 1 is higher
+    function checkitem(i)
+    {
+        var s = getitem(i).toLowerCase().substr(0, text.length);
+        if (s == text) return 0;
+        else return (s > text ? -1 : 1);
+    }
+    
+    
+    // from an index, get its string
+    // this abstracts over alternates
+    function getitem(i)
+    {
+        for ( ; i >= 0; i--)
+        {
+            var s = children[i].firstChild.firstChild.data;
+            if (s.indexOf(' ') == -1)
+                return s;
+        }
+        return ""; // should never be reached
+    }
+}
+
+function setSynopsis(filename) {
+    if (parent.window.synopsis) {
+        if (parent.window.synopsis.location.replace) {
+            // In Firefox this avoids adding the change to the history.
+            parent.window.synopsis.location.replace(filename);
+        } else {
+            parent.window.synopsis.location = filename;
+        }
+    }
+}
+
+function addMenuItem(html) {
+  var menu = document.getElementById("page-menu");
+  if (menu) {
+    var btn = menu.firstChild.cloneNode(false);
+    btn.innerHTML = html;
+    menu.appendChild(btn);
+  }
+}
+
+function adjustForFrames() {
+  var bodyCls;
+  
+  if (parent.location.href == window.location.href) {
+    // not in frames, so add Frames button
+    addMenuItem("<a href='#' onclick='reframe();return true;'>Frames</a>");
+    bodyCls = "no-frame";
+  }
+  else {
+    bodyCls = "in-frame";
+  }
+  addClass(document.body, bodyCls);
+}
+
+function reframe() {
+  setCookie("haddock-reframe", document.URL);
+  window.location = "frames.html";
+}
+
+function postReframe() {
+  var s = getCookie("haddock-reframe");
+  if (s) {
+    parent.window.main.location = s;
+    clearCookie("haddock-reframe");
+  }
+}
+
+function styles() {
+  var i, a, es = document.getElementsByTagName("link"), rs = [];
+  for (i = 0; a = es[i]; i++) {
+    if(a.rel.indexOf("style") != -1 && a.title) {
+      rs.push(a);
+    }
+  }
+  return rs;
+}
+
+function addStyleMenu() {
+  var as = styles();
+  var i, a, btns = "";
+  for(i=0; a = as[i]; i++) {
+    btns += "<li><a href='#' onclick=\"setActiveStyleSheet('"
+      + a.title + "'); return false;\">"
+      + a.title + "</a></li>"
+  }
+  if (as.length > 1) {
+    var h = "<div id='style-menu-holder'>"
+      + "<a href='#' onclick='styleMenu(); return false;'>Style &#9662;</a>"
+      + "<ul id='style-menu' class='hide'>" + btns + "</ul>"
+      + "</div>";
+    addMenuItem(h);
+  }
+}
+
+function setActiveStyleSheet(title) {
+  var as = styles();
+  var i, a, found;
+  for(i=0; a = as[i]; i++) {
+    a.disabled = true;
+          // need to do this always, some browsers are edge triggered
+    if(a.title == title) {
+      found = a;
+    }
+  }
+  if (found) {
+    found.disabled = false;
+    setCookie("haddock-style", title);
+  }
+  else {
+    as[0].disabled = false;
+    clearCookie("haddock-style");
+  }
+  styleMenu(false);
+}
+
+function resetStyle() {
+  var s = getCookie("haddock-style");
+  if (s) setActiveStyleSheet(s);
+}
+
+
+function styleMenu(show) {
+  var m = document.getElementById('style-menu');
+  if (m) toggleShow(m, show);
+}
+
+
+function pageLoad() {
+  addStyleMenu();
+  adjustForFrames();
+  resetStyle();
+  restoreCollapsed();
+}
+