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1 | import { Component, forwardRef, Input, OnChanges } from '@angular/core' |
2 | import { ControlValueAccessor, NG_VALUE_ACCESSOR } from '@angular/forms' | |
3 | import { SelectOptionsItem } from './select-options.component' | |
4 | ||
5 | @Component({ | |
6 | selector: 'my-select-custom-value', | |
7 | styleUrls: [ './select-shared.component.scss' ], | |
8 | templateUrl: './select-custom-value.component.html', | |
9 | providers: [ | |
10 | { | |
11 | provide: NG_VALUE_ACCESSOR, | |
12 | useExisting: forwardRef(() => SelectCustomValueComponent), | |
13 | multi: true | |
14 | } | |
15 | ] | |
16 | }) | |
17 | export class SelectCustomValueComponent implements ControlValueAccessor, OnChanges { | |
18 | @Input() items: SelectOptionsItem[] = [] | |
19 | @Input() clearable = false | |
20 | @Input() searchable = false | |
21 | @Input() groupBy: string | |
22 | @Input() labelForId: string | |
23 | ||
24 | customValue: number | string = '' | |
25 | selectedId: number | string | |
26 | ||
27 | itemsWithCustom: SelectOptionsItem[] = [] | |
28 | ||
29 | ngOnChanges () { | |
30 | this.itemsWithCustom = this.getItems() | |
31 | } | |
32 | ||
33 | propagateChange = (_: any) => { /* empty */ } | |
34 | ||
35 | writeValue (id: number | string) { | |
36 | this.selectedId = id | |
37 | ||
38 | if (this.isSelectedIdInItems() !== true) { | |
39 | this.selectedId = 'other' | |
40 | this.customValue = id | |
41 | } | |
42 | } | |
43 | ||
44 | registerOnChange (fn: (_: any) => void) { | |
45 | this.propagateChange = fn | |
46 | } | |
47 | ||
48 | registerOnTouched () { | |
49 | // Unused | |
50 | } | |
51 | ||
52 | onModelChange () { | |
53 | if (this.selectedId === 'other') { | |
54 | return this.propagateChange(this.customValue) | |
55 | } | |
56 | ||
57 | return this.propagateChange(this.selectedId) | |
58 | } | |
59 | ||
60 | isSelectedIdInItems () { | |
61 | return !!this.items.find(i => i.id === this.selectedId) | |
62 | } | |
63 | ||
64 | getItems () { | |
65 | const other: SelectOptionsItem = { | |
66 | id: 'other', | |
67 | label: $localize`Custom value...` | |
68 | } | |
69 | ||
70 | return this.items.concat([ other ]) | |
71 | } | |
72 | ||
73 | isCustomValue () { | |
74 | return this.selectedId === 'other' | |
75 | } | |
76 | } |