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feat(material-experimental/mdc-chips): switch to evolution API (#23931)
* feat(material-experimental/mdc-chips): switch to evolution API Reworks the MDC-based chips to use the new `evolution` API instead of the deprecated one we're currently using. The new API comes with a lot of markup changes and some behavior differences. The new API also allows to remove the `GridKeyManager`, because the keyboard navigation is handled correctly by MDC. * refactor(material-experimental/mdc-chips): reduce specificity and bundle size Reworks the theme of the MDC-based chips to produce less specific and more compact CSS.
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,151 @@ | ||
| /** | ||
| * @license | ||
| * Copyright Google LLC All Rights Reserved. | ||
| * | ||
| * Use of this source code is governed by an MIT-style license that can be | ||
| * found in the LICENSE file at https://angular.io/license | ||
| */ | ||
|
|
||
| import { | ||
| AfterViewInit, | ||
| ChangeDetectorRef, | ||
| Directive, | ||
| ElementRef, | ||
| Inject, | ||
| Input, | ||
| OnChanges, | ||
| OnDestroy, | ||
| SimpleChanges, | ||
| } from '@angular/core'; | ||
| import {DOCUMENT} from '@angular/common'; | ||
| import { | ||
| MDCChipActionAdapter, | ||
| MDCChipActionFoundation, | ||
| MDCChipActionType, | ||
| MDCChipPrimaryActionFoundation, | ||
| } from '@material/chips'; | ||
| import {emitCustomEvent} from './emit-event'; | ||
| import { | ||
| CanDisable, | ||
| HasTabIndex, | ||
| mixinDisabled, | ||
| mixinTabIndex, | ||
| } from '@angular/material-experimental/mdc-core'; | ||
|
|
||
| const _MatChipActionMixinBase = mixinTabIndex(mixinDisabled(class {}), -1); | ||
|
|
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| /** | ||
| * Interactive element within a chip. | ||
| * @docs-private | ||
| */ | ||
| @Directive({ | ||
| selector: '[matChipAction]', | ||
| inputs: ['disabled', 'tabIndex'], | ||
| host: { | ||
| 'class': 'mdc-evolution-chip__action mat-mdc-chip-action', | ||
| '[class.mdc-evolution-chip__action--primary]': `_getFoundation().actionType() === ${MDCChipActionType.PRIMARY}`, | ||
| // Note that while our actions are interactive, we have to add the `--presentational` class, | ||
| // in order to avoid some super-specific `:hover` styles from MDC. | ||
| '[class.mdc-evolution-chip__action--presentational]': `_getFoundation().actionType() === ${MDCChipActionType.PRIMARY}`, | ||
| '[class.mdc-evolution-chip__action--trailing]': `_getFoundation().actionType() === ${MDCChipActionType.TRAILING}`, | ||
| '[attr.tabindex]': '(disabled || !isInteractive) ? null : tabIndex', | ||
| '[attr.disabled]': "disabled ? '' : null", | ||
| '[attr.aria-disabled]': 'disabled', | ||
| '(click)': '_handleClick($event)', | ||
| '(keydown)': '_handleKeydown($event)', | ||
| }, | ||
| }) | ||
| export class MatChipAction | ||
| extends _MatChipActionMixinBase | ||
| implements AfterViewInit, OnDestroy, CanDisable, HasTabIndex, OnChanges | ||
| { | ||
| private _document: Document; | ||
| private _foundation: MDCChipActionFoundation; | ||
| private _adapter: MDCChipActionAdapter = { | ||
| focus: () => this.focus(), | ||
| getAttribute: (name: string) => this._elementRef.nativeElement.getAttribute(name), | ||
| setAttribute: (name: string, value: string) => { | ||
| // MDC tries to update the tabindex directly in the DOM when navigating using the keyboard | ||
| // which overrides our own handling. If we detect such a case, assign it to the same property | ||
| // as the Angular binding in order to maintain consistency. | ||
| if (name === 'tabindex') { | ||
| this._updateTabindex(parseInt(value)); | ||
| } else { | ||
| this._elementRef.nativeElement.setAttribute(name, value); | ||
| } | ||
| }, | ||
| removeAttribute: (name: string) => { | ||
| if (name !== 'tabindex') { | ||
| this._elementRef.nativeElement.removeAttribute(name); | ||
| } | ||
| }, | ||
| getElementID: () => this._elementRef.nativeElement.id, | ||
| emitEvent: <T>(eventName: string, data: T) => { | ||
| emitCustomEvent<T>(this._elementRef.nativeElement, this._document, eventName, data, true); | ||
| }, | ||
| }; | ||
|
|
||
| /** Whether the action is interactive. */ | ||
| @Input() isInteractive = true; | ||
|
|
||
| _handleClick(_event: MouseEvent) { | ||
| // Usually these events can't happen while the chip is disabled since the browser won't | ||
| // allow them which is what MDC seems to rely on, however the event can be faked in tests. | ||
| if (!this.disabled && this.isInteractive) { | ||
| this._foundation.handleClick(); | ||
| } | ||
| } | ||
|
|
||
| _handleKeydown(event: KeyboardEvent) { | ||
| // Usually these events can't happen while the chip is disabled since the browser won't | ||
| // allow them which is what MDC seems to rely on, however the event can be faked in tests. | ||
| if (!this.disabled && this.isInteractive) { | ||
| this._foundation.handleKeydown(event); | ||
| } | ||
| } | ||
|
|
||
| protected _createFoundation(adapter: MDCChipActionAdapter): MDCChipActionFoundation { | ||
| return new MDCChipPrimaryActionFoundation(adapter); | ||
| } | ||
|
|
||
| constructor( | ||
| public _elementRef: ElementRef, | ||
| @Inject(DOCUMENT) _document: any, | ||
| private _changeDetectorRef: ChangeDetectorRef, | ||
| ) { | ||
| super(); | ||
| this._foundation = this._createFoundation(this._adapter); | ||
|
|
||
| if (_elementRef.nativeElement.nodeName === 'BUTTON') { | ||
| _elementRef.nativeElement.setAttribute('type', 'button'); | ||
| } | ||
| } | ||
|
|
||
| ngAfterViewInit() { | ||
| this._foundation.init(); | ||
| this._foundation.setDisabled(this.disabled); | ||
| } | ||
|
|
||
| ngOnChanges(changes: SimpleChanges) { | ||
| if (changes['disabled']) { | ||
| this._foundation.setDisabled(this.disabled); | ||
| } | ||
| } | ||
|
|
||
| ngOnDestroy() { | ||
| this._foundation.destroy(); | ||
| } | ||
|
|
||
| focus() { | ||
| this._elementRef.nativeElement.focus(); | ||
| } | ||
|
|
||
| _getFoundation() { | ||
| return this._foundation; | ||
| } | ||
|
|
||
| _updateTabindex(value: number) { | ||
| this.tabIndex = value; | ||
| this._changeDetectorRef.markForCheck(); | ||
| } | ||
| } |
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