import { BasePortalOutlet, CdkPortalOutlet, ComponentPortal, TemplatePortal } from '@angular/cdk/portal';
import { ComponentRef, EmbeddedViewRef, NgZone, OnDestroy } from '@angular/core';
import { Subject } from 'rxjs';
import { MdcSnackbarConfig } from './snackbar-config';
export declare class MdcSnackbarContainer extends BasePortalOutlet implements OnDestroy {
    private _ngZone;
    snackbarConfig: MdcSnackbarConfig;
    /** The portal outlet inside of this container into which the snackbar content will be loaded. */
    _portalOutlet: CdkPortalOutlet;
    /** Subject for notifying that the snackbar has exited from view. */
    readonly _onExit: Subject<any>;
    constructor(_ngZone: NgZone, snackbarConfig: MdcSnackbarConfig);
    /** Attach a component portal as content to this snackbar container. */
    attachComponentPortal<T>(portal: ComponentPortal<T>): ComponentRef<T>;
    /** Attach a template portal as content to this snackbar container. */
    attachTemplatePortal<C>(portal: TemplatePortal<C>): EmbeddedViewRef<C>;
    ngOnDestroy(): void;
    /**
     * Waits for the zone to settle before removing the element. Helps prevent
     * errors where we end up removing an element which is in the middle of an animation.
     */
    private _completeExit;
}