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40e87e9e C |
1 | import { Component, EventEmitter, forwardRef, Input, OnInit, Output } from '@angular/core' |
2 | import { ControlValueAccessor, NG_VALUE_ACCESSOR } from '@angular/forms' | |
3 | import { NotificationsService } from 'angular2-notifications' | |
4 | import { I18n } from '@ngx-translate/i18n-polyfill' | |
5 | ||
6 | @Component({ | |
7 | selector: 'my-reactive-file', | |
8 | styleUrls: [ './reactive-file.component.scss' ], | |
9 | templateUrl: './reactive-file.component.html', | |
10 | providers: [ | |
11 | { | |
12 | provide: NG_VALUE_ACCESSOR, | |
13 | useExisting: forwardRef(() => ReactiveFileComponent), | |
14 | multi: true | |
15 | } | |
16 | ] | |
17 | }) | |
18 | export class ReactiveFileComponent implements OnInit, ControlValueAccessor { | |
19 | @Input() inputLabel: string | |
20 | @Input() inputName: string | |
21 | @Input() extensions: string[] = [] | |
22 | @Input() maxFileSize: number | |
23 | @Input() displayFilename = false | |
24 | ||
25 | @Output() fileChanged = new EventEmitter<Blob>() | |
26 | ||
27 | allowedExtensionsMessage = '' | |
28 | ||
29 | private file: File | |
30 | ||
31 | constructor ( | |
32 | private notificationsService: NotificationsService, | |
33 | private i18n: I18n | |
34 | ) {} | |
35 | ||
36 | get filename () { | |
37 | if (!this.file) return '' | |
38 | ||
39 | return this.file.name | |
40 | } | |
41 | ||
42 | ngOnInit () { | |
43 | this.allowedExtensionsMessage = this.extensions.join(', ') | |
44 | } | |
45 | ||
46 | fileChange (event: any) { | |
47 | if (event.target.files && event.target.files.length) { | |
48 | const [ file ] = event.target.files | |
49 | ||
50 | if (file.size > this.maxFileSize) { | |
51 | this.notificationsService.error(this.i18n('Error'), this.i18n('This file is too large.')) | |
52 | return | |
53 | } | |
54 | ||
55 | this.file = file | |
56 | ||
57 | this.propagateChange(this.file) | |
58 | this.fileChanged.emit(this.file) | |
59 | } | |
60 | } | |
61 | ||
62 | propagateChange = (_: any) => { /* empty */ } | |
63 | ||
64 | writeValue (file: any) { | |
65 | this.file = file | |
66 | } | |
67 | ||
68 | registerOnChange (fn: (_: any) => void) { | |
69 | this.propagateChange = fn | |
70 | } | |
71 | ||
72 | registerOnTouched () { | |
73 | // Unused | |
74 | } | |
75 | } |