source: trip-planner-front/node_modules/@angular/material/esm2015/expansion/accordion.js@ 188ee53

/**
 * @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 { Directive, Input, ContentChildren, QueryList, } from '@angular/core';
import { coerceBooleanProperty } from '@angular/cdk/coercion';
import { CdkAccordion } from '@angular/cdk/accordion';
import { FocusKeyManager } from '@angular/cdk/a11y';
import { startWith } from 'rxjs/operators';
import { MAT_ACCORDION } from './accordion-base';
import { MatExpansionPanelHeader } from './expansion-panel-header';
/**
 * Directive for a Material Design Accordion.
 */
export class MatAccordion extends CdkAccordion {
    constructor() {
        super(...arguments);
        /** Headers belonging to this accordion. */
        this._ownHeaders = new QueryList();
        this._hideToggle = false;
        /**
         * Display mode used for all expansion panels in the accordion. Currently two display
         * modes exist:
         *  default - a gutter-like spacing is placed around any expanded panel, placing the expanded
         *     panel at a different elevation from the rest of the accordion.
         *  flat - no spacing is placed around expanded panels, showing all panels at the same
         *     elevation.
         */
        this.displayMode = 'default';
        /** The position of the expansion indicator. */
        this.togglePosition = 'after';
    }
    /** Whether the expansion indicator should be hidden. */
    get hideToggle() { return this._hideToggle; }
    set hideToggle(show) { this._hideToggle = coerceBooleanProperty(show); }
    ngAfterContentInit() {
        this._headers.changes
            .pipe(startWith(this._headers))
            .subscribe((headers) => {
            this._ownHeaders.reset(headers.filter(header => header.panel.accordion === this));
            this._ownHeaders.notifyOnChanges();
        });
        this._keyManager = new FocusKeyManager(this._ownHeaders).withWrap().withHomeAndEnd();
    }
    /** Handles keyboard events coming in from the panel headers. */
    _handleHeaderKeydown(event) {
        this._keyManager.onKeydown(event);
    }
    _handleHeaderFocus(header) {
        this._keyManager.updateActiveItem(header);
    }
    ngOnDestroy() {
        super.ngOnDestroy();
        this._ownHeaders.destroy();
    }
}
MatAccordion.decorators = [
    { type: Directive, args: [{
                selector: 'mat-accordion',
                exportAs: 'matAccordion',
                inputs: ['multi'],
                providers: [{
                        provide: MAT_ACCORDION,
                        useExisting: MatAccordion
                    }],
                host: {
                    class: 'mat-accordion',
                    // Class binding which is only used by the test harness as there is no other
                    // way for the harness to detect if multiple panel support is enabled.
                    '[class.mat-accordion-multi]': 'this.multi',
                }
            },] }
];
MatAccordion.propDecorators = {
    _headers: [{ type: ContentChildren, args: [MatExpansionPanelHeader, { descendants: true },] }],
    hideToggle: [{ type: Input }],
    displayMode: [{ type: Input }],
    togglePosition: [{ type: Input }]
};
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