50 lines
1.7 KiB
TypeScript
50 lines
1.7 KiB
TypeScript
import { Directive, ElementRef, forwardRef, HostListener, Renderer2 } from '@angular/core';
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import { ControlValueAccessor, NG_VALUE_ACCESSOR } from '@angular/forms';
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export const DATE_VALUE_ACCESSOR: any = {
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provide: NG_VALUE_ACCESSOR,
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useExisting: forwardRef(() => DateValueAccessor),
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multi: true,
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};
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/**
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* The accessor for writing a value and listening to changes on a date input element
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*
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* ### Example
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* `<input type="date" name="myBirthday" ngModel useValueAsDate>`
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*/
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@Directive({
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// this selector changes the previous behavior silently and might break existing code
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// selector: 'input[type=date][formControlName],input[type=date][formControl],input[type=date][ngModel]',
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// this selector is an opt-in version
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selector: '[useValueAsDate]',
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providers: [DATE_VALUE_ACCESSOR],
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})
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export class DateValueAccessor implements ControlValueAccessor {
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@HostListener('input', ['$event.target.valueAsDate']) onChange = (_: any) => {};
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@HostListener('blur', []) onTouched = () => {};
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constructor(private _renderer: Renderer2, private _elementRef: ElementRef) {}
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writeValue(value: Date): void {
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if (!value) {
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this._renderer.setProperty(this._elementRef.nativeElement, 'value', null);
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return;
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}
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this._renderer.setProperty(this._elementRef.nativeElement, 'valueAsDate', value);
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}
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registerOnChange(fn: (_: any) => void): void {
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this.onChange = fn;
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}
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registerOnTouched(fn: () => void): void {
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this.onTouched = fn;
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}
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setDisabledState(isDisabled: boolean): void {
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this._renderer.setProperty(this._elementRef.nativeElement, 'disabled', isDisabled);
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}
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}
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