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1 | import { debounceTime, distinctUntilChanged } from 'rxjs/operators' | |
2 | import { Component, forwardRef, Input, OnInit, ViewChild, ElementRef } from '@angular/core' | |
3 | import { ControlValueAccessor, NG_VALUE_ACCESSOR } from '@angular/forms' | |
4 | import { Subject } from 'rxjs' | |
5 | import truncate from 'lodash-es/truncate' | |
6 | import { ScreenService } from '@app/shared/misc/screen.service' | |
7 | import { MarkdownService } from '@app/shared/renderer' | |
8 | ||
9 | @Component({ | |
10 | selector: 'my-markdown-textarea', | |
11 | templateUrl: './markdown-textarea.component.html', | |
12 | styleUrls: [ './markdown-textarea.component.scss' ], | |
13 | providers: [ | |
14 | { | |
15 | provide: NG_VALUE_ACCESSOR, | |
16 | useExisting: forwardRef(() => MarkdownTextareaComponent), | |
17 | multi: true | |
18 | } | |
19 | ] | |
20 | }) | |
21 | ||
22 | export class MarkdownTextareaComponent implements ControlValueAccessor, OnInit { | |
23 | @Input() content = '' | |
24 | @Input() classes: string[] | { [klass: string]: any[] | any } = [] | |
25 | @Input() textareaMaxWidth = '100%' | |
26 | @Input() textareaHeight = '150px' | |
27 | @Input() truncate: number | |
28 | @Input() markdownType: 'text' | 'enhanced' = 'text' | |
29 | @Input() markdownVideo = false | |
30 | @Input() name = 'description' | |
31 | ||
32 | @ViewChild('textarea') textareaElement: ElementRef | |
33 | ||
34 | truncatedPreviewHTML = '' | |
35 | previewHTML = '' | |
36 | isMaximized = false | |
37 | ||
38 | private contentChanged = new Subject<string>() | |
39 | ||
40 | constructor ( | |
41 | private screenService: ScreenService, | |
42 | private markdownService: MarkdownService | |
43 | ) {} | |
44 | ||
45 | ngOnInit () { | |
46 | this.contentChanged | |
47 | .pipe( | |
48 | debounceTime(150), | |
49 | distinctUntilChanged() | |
50 | ) | |
51 | .subscribe(() => this.updatePreviews()) | |
52 | ||
53 | this.contentChanged.next(this.content) | |
54 | } | |
55 | ||
56 | propagateChange = (_: any) => { /* empty */ } | |
57 | ||
58 | writeValue (description: string) { | |
59 | this.content = description | |
60 | ||
61 | this.contentChanged.next(this.content) | |
62 | } | |
63 | ||
64 | registerOnChange (fn: (_: any) => void) { | |
65 | this.propagateChange = fn | |
66 | } | |
67 | ||
68 | registerOnTouched () { | |
69 | // Unused | |
70 | } | |
71 | ||
72 | onModelChange () { | |
73 | this.propagateChange(this.content) | |
74 | ||
75 | this.contentChanged.next(this.content) | |
76 | } | |
77 | ||
78 | onMaximizeClick () { | |
79 | this.isMaximized = !this.isMaximized | |
80 | ||
81 | // Make sure textarea have the focus | |
82 | this.textareaElement.nativeElement.focus() | |
83 | ||
84 | // Make sure the window has no scrollbars | |
85 | if (!this.isMaximized) { | |
86 | this.unlockBodyScroll() | |
87 | } else { | |
88 | this.lockBodyScroll() | |
89 | } | |
90 | } | |
91 | ||
92 | private lockBodyScroll () { | |
93 | document.getElementById('content').classList.add('lock-scroll') | |
94 | } | |
95 | ||
96 | private unlockBodyScroll () { | |
97 | document.getElementById('content').classList.remove('lock-scroll') | |
98 | } | |
99 | ||
100 | private async updatePreviews () { | |
101 | if (this.content === null || this.content === undefined) return | |
102 | ||
103 | this.truncatedPreviewHTML = await this.markdownRender(truncate(this.content, { length: this.truncate })) | |
104 | this.previewHTML = await this.markdownRender(this.content) | |
105 | } | |
106 | ||
107 | private async markdownRender (text: string) { | |
108 | const html = this.markdownType === 'text' ? | |
109 | await this.markdownService.textMarkdownToHTML(text) : | |
110 | await this.markdownService.enhancedMarkdownToHTML(text) | |
111 | ||
112 | return this.markdownVideo ? this.markdownService.processVideoTimestamps(html) : html | |
113 | } | |
114 | } |