client/src/app/shared/forms/reactive-file.component.ts

   1 import { Component, EventEmitter, forwardRef, Input, OnInit, Output } from '@angular/core'
   2 import { ControlValueAccessor, NG_VALUE_ACCESSOR } from '@angular/forms'
   3 import { Notifier } from '@app/core'
   4 import { I18n } from '@ngx-translate/i18n-polyfill'
   5 import { GlobalIconName } from '@app/shared/images/global-icon.component'
   6
   7 @Component({
   8   selector: 'my-reactive-file',
   9   styleUrls: [ './reactive-file.component.scss' ],
  10   templateUrl: './reactive-file.component.html',
  11   providers: [
  12     {
  13       provide: NG_VALUE_ACCESSOR,
  14       useExisting: forwardRef(() => ReactiveFileComponent),
  15       multi: true
  16     }
  17   ]
  18 })
  19 export class ReactiveFileComponent implements OnInit, ControlValueAccessor {
  20   @Input() inputLabel: string
  21   @Input() inputName: string
  22   @Input() extensions: string[] = []
  23   @Input() maxFileSize: number
  24   @Input() displayFilename = false
  25   @Input() icon: GlobalIconName
  26
  27   @Output() fileChanged = new EventEmitter<Blob>()
  28
  29   allowedExtensionsMessage = ''
  30   fileInputValue: any
  31
  32   private file: File
  33
  34   constructor (
  35     private notifier: Notifier,
  36     private i18n: I18n
  37   ) {}
  38
  39   get filename () {
  40     if (!this.file) return ''
  41
  42     return this.file.name
  43   }
  44
  45   ngOnInit () {
  46     this.allowedExtensionsMessage = this.extensions.join(', ')
  47   }
  48
  49   fileChange (event: any) {
  50     if (event.target.files && event.target.files.length) {
  51       const [ file ] = event.target.files
  52
  53       if (file.size > this.maxFileSize) {
  54         this.notifier.error(this.i18n('This file is too large.'))
  55         return
  56       }
  57
  58       const extension = '.' + file.name.split('.').pop()
  59       if (this.extensions.includes(extension) === false) {
  60         const message = this.i18n(
  61           'PeerTube cannot handle this kind of file. Accepted extensions are {{extensions}}.',
  62           { extensions: this.allowedExtensionsMessage }
  63         )
  64         this.notifier.error(message)
  65
  66         return
  67       }
  68
  69       this.file = file
  70
  71       this.propagateChange(this.file)
  72       this.fileChanged.emit(this.file)
  73     }
  74   }
  75
  76   propagateChange = (_: any) => { /* empty */ }
  77
  78   writeValue (file: any) {
  79     this.file = file
  80
  81     if (!this.file) this.fileInputValue = null
  82   }
  83
  84   registerOnChange (fn: (_: any) => void) {
  85     this.propagateChange = fn
  86   }
  87
  88   registerOnTouched () {
  89     // Unused
  90   }
  91 }