client/src/app/shared/shared-forms/select-tags.component.ts

   1 import { Component, Input, forwardRef } from '@angular/core'
   2 import { NG_VALUE_ACCESSOR, ControlValueAccessor } from '@angular/forms'
   3
   4 @Component({
   5   selector: 'my-select-tags',
   6   styleUrls: [ './select-shared.component.scss', './select-tags.component.scss' ],
   7   templateUrl: './select-tags.component.html',
   8   providers: [
   9     {
  10       provide: NG_VALUE_ACCESSOR,
  11       useExisting: forwardRef(() => SelectTagsComponent),
  12       multi: true
  13     }
  14   ]
  15 })
  16 export class SelectTagsComponent implements ControlValueAccessor {
  17   @Input() items: string[] = []
  18   @Input() _items: string[] = []
  19
  20   propagateChange = (_: any) => { /* empty */ }
  21
  22   writeValue (items: string[]) {
  23     this._items = items
  24     this.propagateChange(this._items)
  25   }
  26
  27   registerOnChange (fn: (_: any) => void) {
  28     this.propagateChange = fn
  29   }
  30
  31   registerOnTouched () {
  32     // Unused
  33   }
  34
  35   onModelChange () {
  36     this.propagateChange(this._items)
  37   }
  38 }