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1 | import { Component, forwardRef, Input, OnInit } from '@angular/core' | |
2 | import { ControlValueAccessor, NG_VALUE_ACCESSOR } from '@angular/forms' | |
3 | import 'rxjs/add/operator/debounceTime' | |
4 | import 'rxjs/add/operator/distinctUntilChanged' | |
5 | import { isInMobileView } from '@app/shared/misc/utils' | |
6 | import { MarkdownService } from '@app/videos/shared' | |
7 | import { Subject } from 'rxjs/Subject' | |
8 | import truncate from 'lodash-es/truncate' | |
9 | ||
10 | @Component({ | |
11 | selector: 'my-markdown-textarea', | |
12 | templateUrl: './markdown-textarea.component.html', | |
13 | styleUrls: [ './markdown-textarea.component.scss' ], | |
14 | providers: [ | |
15 | { | |
16 | provide: NG_VALUE_ACCESSOR, | |
17 | useExisting: forwardRef(() => MarkdownTextareaComponent), | |
18 | multi: true | |
19 | } | |
20 | ] | |
21 | }) | |
22 | ||
23 | export class MarkdownTextareaComponent implements ControlValueAccessor, OnInit { | |
24 | @Input() description = '' | |
25 | @Input() classes: string[] = [] | |
26 | @Input() textareaWidth = '100%' | |
27 | @Input() textareaHeight = '150px' | |
28 | @Input() previewColumn = false | |
29 | @Input() truncate: number | |
30 | ||
31 | textareaMarginRight = '0' | |
32 | flexDirection = 'column' | |
33 | truncatedDescriptionHTML = '' | |
34 | descriptionHTML = '' | |
35 | ||
36 | private descriptionChanged = new Subject<string>() | |
37 | ||
38 | constructor (private markdownService: MarkdownService) {} | |
39 | ||
40 | ngOnInit () { | |
41 | this.descriptionChanged | |
42 | .debounceTime(150) | |
43 | .distinctUntilChanged() | |
44 | .subscribe(() => this.updateDescriptionPreviews()) | |
45 | ||
46 | this.descriptionChanged.next(this.description) | |
47 | ||
48 | if (this.previewColumn) { | |
49 | this.flexDirection = 'row' | |
50 | this.textareaMarginRight = '15px' | |
51 | } | |
52 | } | |
53 | ||
54 | propagateChange = (_: any) => { /* empty */ } | |
55 | ||
56 | writeValue (description: string) { | |
57 | this.description = description | |
58 | ||
59 | this.descriptionChanged.next(this.description) | |
60 | } | |
61 | ||
62 | registerOnChange (fn: (_: any) => void) { | |
63 | this.propagateChange = fn | |
64 | } | |
65 | ||
66 | registerOnTouched () { | |
67 | // Unused | |
68 | } | |
69 | ||
70 | onModelChange () { | |
71 | this.propagateChange(this.description) | |
72 | ||
73 | this.descriptionChanged.next(this.description) | |
74 | } | |
75 | ||
76 | arePreviewsDisplayed () { | |
77 | return isInMobileView() === false | |
78 | } | |
79 | ||
80 | private updateDescriptionPreviews () { | |
81 | if (this.description === null || this.description === undefined) return | |
82 | ||
83 | this.truncatedDescriptionHTML = this.markdownService.markdownToHTML(truncate(this.description, { length: this.truncate })) | |
84 | this.descriptionHTML = this.markdownService.markdownToHTML(this.description) | |
85 | } | |
86 | } |