import { ActionBehavior } from '../actionbehavior';
import { Observable } from '../observable';
/**
 * Displays a pop-up text alert on screen.
 *
 * @zbehavior
 * @zicon sms
 * @zgroup Actions
 */
export declare class ShowTextAlert extends ActionBehavior {
    /**
     * The text to show in the alert
     * @zprop
     * @zgroup ShowTextAlert
     * @zgrouppriority 20
     */
    text: Observable<string, never>;
    /**
     * The time (in milliseconds) that the text alert should remain on screen
     *
     * @zprop
     * @zgroup Appearance
     * @zgrouppriority 10
     * @zdefault 3000
     * @ztype time-milliseconds
     */
    timeout: Observable<number, never>;
    /**
     * The color of the background of the text alert
     *
     * @zprop
     * @zgroup Appearance
     * @zgrouppriority 10
     * @zdefault black
     * @ztype color-hex
     */
    backgroundColor: Observable<string, never>;
    /**
     * The color of the text of the text alert
     *
     * @zprop
     * @zgroup Appearance
     * @zgrouppriority 10
     * @zdefault #ffffff
     * @ztype color-hex
     */
    textColor: Observable<string, never>;
    /**
     * Additional CSS class names to add to the alert DOM element
     *
     * @zprop
     * @zgroup Appearance
     * @zgrouppriority 10
     * @zdefault []
     */
    classNames: Observable<string[], never>;
    /**
     * How long the alert will apear on the screen
     *
     * @zprop
     */
    perform(): void;
    /** @zui */
    preview(): void;
}