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67ed6552 C |
1 | import truncate from 'lodash-es/truncate' |
2 | import { Subject } from 'rxjs' | |
db400f44 | 3 | import { debounceTime, distinctUntilChanged } from 'rxjs/operators' |
2539932e | 4 | import { ViewportScroller } from '@angular/common' |
67ed6552 | 5 | import { Component, ElementRef, forwardRef, Input, OnInit, ViewChild } from '@angular/core' |
2de96f4d | 6 | import { ControlValueAccessor, NG_VALUE_ACCESSOR } from '@angular/forms' |
2539932e | 7 | import { SafeHtml } from '@angular/platform-browser' |
aa9cf3b9 | 8 | import { MarkdownService, ScreenService } from '@app/core' |
9162fdd3 | 9 | import { Video } from '@shared/models' |
2de96f4d C |
10 | |
11 | @Component({ | |
66b16caf C |
12 | selector: 'my-markdown-textarea', |
13 | templateUrl: './markdown-textarea.component.html', | |
14 | styleUrls: [ './markdown-textarea.component.scss' ], | |
2de96f4d C |
15 | providers: [ |
16 | { | |
17 | provide: NG_VALUE_ACCESSOR, | |
66b16caf | 18 | useExisting: forwardRef(() => MarkdownTextareaComponent), |
2de96f4d C |
19 | multi: true |
20 | } | |
21 | ] | |
22 | }) | |
23 | ||
66b16caf | 24 | export class MarkdownTextareaComponent implements ControlValueAccessor, OnInit { |
07fa4c97 | 25 | @Input() content = '' |
2539932e | 26 | |
3031971e | 27 | @Input() formError: string |
2539932e | 28 | |
66b16caf | 29 | @Input() truncate: number |
2539932e | 30 | |
07fa4c97 | 31 | @Input() markdownType: 'text' | 'enhanced' = 'text' |
2539932e C |
32 | @Input() customMarkdownRenderer?: (text: string) => Promise<string | HTMLElement> |
33 | ||
6a056bbe C |
34 | @Input() debounceTime = 150 |
35 | ||
9162fdd3 | 36 | @Input() markdownVideo: Video |
2539932e | 37 | |
4ee6a8b1 | 38 | @Input() name = 'description' |
66b16caf | 39 | |
b15fe00f | 40 | @ViewChild('textarea') textareaElement: ElementRef |
2539932e C |
41 | @ViewChild('previewElement') previewElement: ElementRef |
42 | ||
43 | truncatedPreviewHTML: SafeHtml | string = '' | |
44 | previewHTML: SafeHtml | string = '' | |
b15fe00f | 45 | |
b15fe00f | 46 | isMaximized = false |
8d8a037e | 47 | disabled = false |
2de96f4d | 48 | |
01d0147e | 49 | maximizeInText = $localize`Maximize editor` |
50 | maximizeOutText = $localize`Exit maximized editor` | |
51 | ||
07fa4c97 | 52 | private contentChanged = new Subject<string>() |
363726fe | 53 | private scrollPosition: [number, number] |
2de96f4d | 54 | |
363726fe | 55 | constructor ( |
56 | private viewportScroller: ViewportScroller, | |
aa9cf3b9 | 57 | private screenService: ScreenService, |
363726fe | 58 | private markdownService: MarkdownService |
59 | ) { } | |
2de96f4d C |
60 | |
61 | ngOnInit () { | |
07fa4c97 | 62 | this.contentChanged |
db400f44 | 63 | .pipe( |
6a056bbe | 64 | debounceTime(this.debounceTime), |
db400f44 C |
65 | distinctUntilChanged() |
66 | ) | |
67 | .subscribe(() => this.updatePreviews()) | |
2de96f4d | 68 | |
07fa4c97 | 69 | this.contentChanged.next(this.content) |
2de96f4d C |
70 | } |
71 | ||
72 | propagateChange = (_: any) => { /* empty */ } | |
73 | ||
74 | writeValue (description: string) { | |
07fa4c97 | 75 | this.content = description |
2de96f4d | 76 | |
07fa4c97 | 77 | this.contentChanged.next(this.content) |
2de96f4d C |
78 | } |
79 | ||
80 | registerOnChange (fn: (_: any) => void) { | |
81 | this.propagateChange = fn | |
82 | } | |
83 | ||
84 | registerOnTouched () { | |
85 | // Unused | |
86 | } | |
87 | ||
88 | onModelChange () { | |
07fa4c97 | 89 | this.propagateChange(this.content) |
2de96f4d | 90 | |
07fa4c97 | 91 | this.contentChanged.next(this.content) |
2de96f4d C |
92 | } |
93 | ||
b15fe00f | 94 | onMaximizeClick () { |
3031971e C |
95 | if (this.disabled) return |
96 | ||
b15fe00f K |
97 | this.isMaximized = !this.isMaximized |
98 | ||
99 | // Make sure textarea have the focus | |
aa9cf3b9 | 100 | // Except on touchscreens devices, the virtual keyboard may move up and hide the textarea in maximized mode |
101 | if (!this.screenService.isInTouchScreen()) { | |
102 | this.textareaElement.nativeElement.focus() | |
103 | } | |
b15fe00f K |
104 | |
105 | // Make sure the window has no scrollbars | |
106 | if (!this.isMaximized) { | |
107 | this.unlockBodyScroll() | |
108 | } else { | |
109 | this.lockBodyScroll() | |
110 | } | |
111 | } | |
112 | ||
8d8a037e JB |
113 | setDisabledState (isDisabled: boolean) { |
114 | this.disabled = isDisabled | |
115 | } | |
116 | ||
b15fe00f | 117 | private lockBodyScroll () { |
363726fe | 118 | this.scrollPosition = this.viewportScroller.getScrollPosition() |
b15fe00f K |
119 | document.getElementById('content').classList.add('lock-scroll') |
120 | } | |
121 | ||
122 | private unlockBodyScroll () { | |
123 | document.getElementById('content').classList.remove('lock-scroll') | |
363726fe | 124 | this.viewportScroller.scrollToPosition(this.scrollPosition) |
6693df9d C |
125 | } |
126 | ||
41d71344 | 127 | private async updatePreviews () { |
07fa4c97 | 128 | if (this.content === null || this.content === undefined) return |
f595d394 | 129 | |
41d71344 C |
130 | this.truncatedPreviewHTML = await this.markdownRender(truncate(this.content, { length: this.truncate })) |
131 | this.previewHTML = await this.markdownRender(this.content) | |
07fa4c97 C |
132 | } |
133 | ||
d68ebf0b | 134 | private async markdownRender (text: string) { |
2539932e C |
135 | let html: string |
136 | ||
137 | if (this.customMarkdownRenderer) { | |
138 | const result = await this.customMarkdownRenderer(text) | |
139 | ||
140 | if (result instanceof HTMLElement) { | |
2539932e C |
141 | const wrapperElement = this.previewElement.nativeElement as HTMLElement |
142 | wrapperElement.innerHTML = '' | |
143 | wrapperElement.appendChild(result) | |
144 | return | |
145 | } | |
146 | ||
147 | html = result | |
148 | } else if (this.markdownType === 'text') { | |
0e45e336 | 149 | html = await this.markdownService.textMarkdownToHTML({ markdown: text }) |
2539932e | 150 | } else { |
0e45e336 | 151 | html = await this.markdownService.enhancedMarkdownToHTML({ markdown: text }) |
2539932e C |
152 | } |
153 | ||
154 | if (this.markdownVideo) { | |
9162fdd3 | 155 | html = this.markdownService.processVideoTimestamps(this.markdownVideo.shortUUID, html) |
2539932e | 156 | } |
07fa4c97 | 157 | |
2539932e | 158 | return html |
2de96f4d C |
159 | } |
160 | } |