/**
 * @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 { BooleanInput } from 'cdk/coercion';
import {
	InjectionToken,
	OnChanges,
	OnDestroy,
	SimpleChanges,
} from '@angular/core';
import { Subject } from 'rxjs';
/**
 * 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.
 */
import * as ɵngcc0 from '@angular/core';
export declare const CDK_ACCORDION: InjectionToken<CdkAccordion>;
/**
 * Directive whose purpose is to manage the expanded state of CdkAccordionItem children.
 */
export declare class CdkAccordion implements OnDestroy, OnChanges {
	/** Emits when the state of the accordion changes */
	readonly _stateChanges: Subject<SimpleChanges>;
	/** Stream that emits true/false when openAll/closeAll is triggered. */
	readonly _openCloseAllActions: Subject<boolean>;
	/** A readonly id value to use for unique selection coordination. */
	readonly id: string;
	/** Whether the accordion should allow multiple expanded accordion items simultaneously. */
	get multi(): boolean;
	set multi(multi: boolean);
	private _multi;
	/** Opens all enabled accordion items in an accordion where multi is enabled. */
	openAll(): void;
	/** Closes all enabled accordion items in an accordion where multi is enabled. */
	closeAll(): void;
	ngOnChanges(changes: SimpleChanges): void;
	ngOnDestroy(): void;
	static ngAcceptInputType_multi: BooleanInput;
	static ɵfac: ɵngcc0.ɵɵFactoryDef<CdkAccordion, never>;
	static ɵdir: ɵngcc0.ɵɵDirectiveDefWithMeta<
		CdkAccordion,
		'cdk-accordion, [cdkAccordion]',
		['cdkAccordion'],
		{ multi: 'multi' },
		{},
		never
	>;
}

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