82 lines
2.6 KiB
TypeScript
82 lines
2.6 KiB
TypeScript
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/**
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* @license
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* Copyright Google LLC All Rights Reserved.
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*
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* Use of this source code is governed by an MIT-style license that can be
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* found in the LICENSE file at https://angular.dev/license
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*/
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import {
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AfterContentChecked,
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AfterContentInit,
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AfterViewInit,
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ChangeDetectionStrategy,
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Component,
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ContentChildren,
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ElementRef,
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Input,
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OnDestroy,
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QueryList,
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ViewChild,
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ViewEncapsulation,
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booleanAttribute,
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} from '@angular/core';
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import {MatTabLabelWrapper} from './tab-label-wrapper';
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import {MatInkBar} from './ink-bar';
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import {MatPaginatedTabHeader} from './paginated-tab-header';
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import {CdkObserveContent} from '@angular/cdk/observers';
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import {MatRipple} from '@angular/material/core';
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/**
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* The header of the tab group which displays a list of all the tabs in the tab group. Includes
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* an ink bar that follows the currently selected tab. When the tabs list's width exceeds the
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* width of the header container, then arrows will be displayed to allow the user to scroll
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* left and right across the header.
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* @docs-private
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*/
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@Component({
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selector: 'mat-tab-header',
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templateUrl: 'tab-header.html',
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styleUrl: 'tab-header.css',
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encapsulation: ViewEncapsulation.None,
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// tslint:disable-next-line:validate-decorators
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changeDetection: ChangeDetectionStrategy.Default,
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host: {
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'class': 'mat-mdc-tab-header',
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'[class.mat-mdc-tab-header-pagination-controls-enabled]': '_showPaginationControls',
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'[class.mat-mdc-tab-header-rtl]': "_getLayoutDirection() == 'rtl'",
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},
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imports: [MatRipple, CdkObserveContent],
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})
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export class MatTabHeader
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extends MatPaginatedTabHeader
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implements AfterContentChecked, AfterContentInit, AfterViewInit, OnDestroy
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{
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@ContentChildren(MatTabLabelWrapper, {descendants: false}) _items: QueryList<MatTabLabelWrapper>;
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@ViewChild('tabListContainer', {static: true}) _tabListContainer: ElementRef;
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@ViewChild('tabList', {static: true}) _tabList: ElementRef;
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@ViewChild('tabListInner', {static: true}) _tabListInner: ElementRef;
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@ViewChild('nextPaginator') _nextPaginator: ElementRef<HTMLElement>;
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@ViewChild('previousPaginator') _previousPaginator: ElementRef<HTMLElement>;
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_inkBar: MatInkBar;
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/** Aria label of the header. */
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@Input('aria-label') ariaLabel: string;
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/** Sets the `aria-labelledby` of the header. */
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@Input('aria-labelledby') ariaLabelledby: string;
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/** Whether the ripple effect is disabled or not. */
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@Input({transform: booleanAttribute})
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disableRipple: boolean = false;
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override ngAfterContentInit() {
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this._inkBar = new MatInkBar(this._items);
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super.ngAfterContentInit();
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}
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protected _itemSelected(event: KeyboardEvent) {
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event.preventDefault();
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}
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}
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