@angular/cdk
Version:
Angular Material Component Development Kit
71 lines • 8.18 kB
JavaScript
/**
* @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 { coerceBooleanProperty } from '@angular/cdk/coercion';
import { Directive, InjectionToken, Input } from '@angular/core';
import { Subject } from 'rxjs';
import * as i0 from "@angular/core";
/** Used to generate unique ID for each accordion. */
let nextId = 0;
/**
* Injection token that can be used to reference instances of `CdkAccordion`. It serves
* as alternative token to the actual `CdkAccordion` class which could cause unnecessary
* retention of the class and its directive metadata.
*/
export const CDK_ACCORDION = new InjectionToken('CdkAccordion');
/**
* Directive whose purpose is to manage the expanded state of CdkAccordionItem children.
*/
class CdkAccordion {
constructor() {
/** Emits when the state of the accordion changes */
this._stateChanges = new Subject();
/** Stream that emits true/false when openAll/closeAll is triggered. */
this._openCloseAllActions = new Subject();
/** A readonly id value to use for unique selection coordination. */
this.id = `cdk-accordion-${nextId++}`;
this._multi = false;
}
/** Whether the accordion should allow multiple expanded accordion items simultaneously. */
get multi() {
return this._multi;
}
set multi(multi) {
this._multi = coerceBooleanProperty(multi);
}
/** Opens all enabled accordion items in an accordion where multi is enabled. */
openAll() {
if (this._multi) {
this._openCloseAllActions.next(true);
}
}
/** Closes all enabled accordion items. */
closeAll() {
this._openCloseAllActions.next(false);
}
ngOnChanges(changes) {
this._stateChanges.next(changes);
}
ngOnDestroy() {
this._stateChanges.complete();
this._openCloseAllActions.complete();
}
static { this.ɵfac = i0.ɵɵngDeclareFactory({ minVersion: "12.0.0", version: "16.0.0", ngImport: i0, type: CdkAccordion, deps: [], target: i0.ɵɵFactoryTarget.Directive }); }
static { this.ɵdir = i0.ɵɵngDeclareDirective({ minVersion: "14.0.0", version: "16.0.0", type: CdkAccordion, selector: "cdk-accordion, [cdkAccordion]", inputs: { multi: "multi" }, providers: [{ provide: CDK_ACCORDION, useExisting: CdkAccordion }], exportAs: ["cdkAccordion"], usesOnChanges: true, ngImport: i0 }); }
}
export { CdkAccordion };
i0.ɵɵngDeclareClassMetadata({ minVersion: "12.0.0", version: "16.0.0", ngImport: i0, type: CdkAccordion, decorators: [{
type: Directive,
args: [{
selector: 'cdk-accordion, [cdkAccordion]',
exportAs: 'cdkAccordion',
providers: [{ provide: CDK_ACCORDION, useExisting: CdkAccordion }],
}]
}], propDecorators: { multi: [{
type: Input
}] } });
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