import { ViewContainerRef, InjectionToken } from '@angular/core';
import { AriaLivePoliteness } from '@angular/cdk/a11y';
/** Injection token that can be used to access the data that was passed in to a snackbar. */
export declare const MDC_SNACKBAR_DATA: InjectionToken<any>;
export declare class MdcSnackbarConfig<D = any> {
    /** The view container to place the overlay for the snackbar into. */
    viewContainerRef?: ViewContainerRef;
    /** Data being injected into the child component. */
    data?: D | null;
    /** Add a CSS class or an array of classes */
    classes?: string | string[];
    /** Add a CSS class or an array of classes to the action button */
    actionClasses?: string | string[];
    /** Add a CSS class or an array of classes to the action icon */
    dismissClasses?: string | string[];
    /** Value must be between 4000 and 10000 or an error will be thrown. Defaults to 5000 (5 seconds). */
    timeoutMs?: number;
    /** Positions the action button/icon below the label instead of alongside it. */
    stacked?: boolean;
    /** Positions the snackbar on the leading edge of the screen */
    leading?: boolean;
    /** Positions the snackbar on the trailing edge of the screen */
    trailing?: boolean;
    /** The layout direction of the snackbar content */
    direction?: string;
    /** Show dismiss ("X") icon */
    dismiss?: boolean;
    /** Whether the snackbar closes when it is focused and the user presses the ESC key */
    closeOnEscape?: boolean;
    /** The politeness level for the screen reader announcement. */
    politeness?: AriaLivePoliteness;
}