import type { ESLMedia } from './esl-media';
/**
 * Manager for {@link ESLMedia}
 * Checks whether media should play inside ESLToggleable container,
 * stores all active instances and instances marked with `autoplay` attribute
 * Restrict that only one media from the group can be played
 *
 * @author Anastasia Lesun
 */
export declare class ESLMediaManager {
    /** All managed instances */
    instances: Set<ESLMedia>;
    /** Active instances */
    get active(): ESLMedia[];
    /** Instances with autoplay marker */
    get autoplayable(): ESLMedia[];
    constructor();
    /** Hook for {@link ESLMedia} initialization */
    _onInit(media: ESLMedia): void;
    /** Hook for {@link ESLMedia} destroy */
    _onDestroy(media: ESLMedia): void;
    /** Hook for {@link ESLMedia} which is started to play */
    _onAfterPlay(media: ESLMedia): void;
    /**
     * Processes {@link ESLToggleable} show event and resumes all media inside.
     * @see {@link ESLMediaManager#releaseAll}
     */
    _onContainerShow(e: Event): void;
    /**
     * Processes {@link ESLToggleable} hide event and systemically suspend all media instances inside.
     * @see {@link ESLMediaManager#suspendAll}
     */
    protected _onContainerHide(e: Event): void;
    /**
     * Starts all system-stopped media with autoplay marker
     * @param scope - the scope to search for media
     * @param system - whether to start only system-stopped media
     */
    protected releaseAll(scope?: Element, system?: boolean): void;
    /**
     * Pauses all active media that was not started manually
     * @param scope - the scope to search for media
     * @param system - whether to pause only system-active media
     */
    protected suspendAll(scope?: Element, system?: boolean): void;
    /** Processes request to play/pause media */
    protected _onRequest(e: CustomEvent): void;
}
declare global {
    export interface ESLLibrary {
        ESLMediaManager: typeof ESLMediaManager;
    }
}