/**
 * @license
 * Copyright 2023 Google LLC
 * SPDX-License-Identifier: Apache-2.0
 */
import '../../divider/divider.js';
import { LitElement } from 'lit';
import { DialogAnimation } from './animations.js';
/**
 * A dialog component.
 *
 * @fires open Dispatched when the dialog is opening before any animations.
 * @fires opened Dispatched when the dialog has opened after any animations.
 * @fires close Dispatched when the dialog is closing before any animations.
 * @fires closed Dispatched when the dialog has closed after any animations.
 * @fires cancel Dispatched when the dialog has been canceled by clicking on the
 *     scrim or pressing Escape.
 */
export declare class Dialog extends LitElement {
    /** @nocollapse */
    static shadowRootOptions: {
        delegatesFocus: boolean;
        mode: ShadowRootMode;
        slotAssignment?: SlotAssignmentMode;
    };
    /**
     * Opens the dialog when set to `true` and closes it when set to `false`.
     */
    get open(): boolean;
    set open(open: boolean);
    /**
     * Gets or sets the dialog's return value, usually to indicate which button
     * a user pressed to close it.
     *
     * https://developer.mozilla.org/en-US/docs/Web/API/HTMLDialogElement/returnValue
     */
    returnValue: string;
    /**
     * The type of dialog for accessibility. Set this to `alert` to announce a
     * dialog as an alert dialog.
     */
    type?: 'alert';
    /**
     * Gets the opening animation for a dialog. Set to a new function to customize
     * the animation.
     */
    getOpenAnimation: () => DialogAnimation;
    /**
     * Gets the closing animation for a dialog. Set to a new function to customize
     * the animation.
     */
    getCloseAnimation: () => DialogAnimation;
    private isOpen;
    private isOpening;
    private isConnectedPromiseResolve;
    private isConnectedPromise;
    private readonly dialog;
    private readonly scrim;
    private readonly container;
    private readonly headline;
    private readonly content;
    private readonly actions;
    private isAtScrollTop;
    private isAtScrollBottom;
    private readonly scroller;
    private readonly topAnchor;
    private readonly bottomAnchor;
    private nextClickIsFromContent;
    private intersectionObserver?;
    private hasHeadline;
    private hasActions;
    private hasIcon;
    constructor();
    /**
     * Opens the dialog and fires a cancelable `open` event. After a dialog's
     * animation, an `opened` event is fired.
     *
     * Add an `autocomplete` attribute to a child of the dialog that should
     * receive focus after opening.
     *
     * @return A Promise that resolves after the animation is finished and the
     *     `opened` event was fired.
     */
    show(): Promise<void>;
    /**
     * Closes the dialog and fires a cancelable `close` event. After a dialog's
     * animation, a `closed` event is fired.
     *
     * @param returnValue A return value usually indicating which button was used
     *     to close a dialog. If a dialog is canceled by clicking the scrim or
     *     pressing Escape, it will not change the return value after closing.
     * @return A Promise that resolves after the animation is finished and the
     *     `closed` event was fired.
     */
    close(returnValue?: string): Promise<void>;
    connectedCallback(): void;
    disconnectedCallback(): void;
    protected render(): import("lit-html").TemplateResult<1>;
    protected firstUpdated(): void;
    private handleDialogClick;
    private handleContentClick;
    private handleSubmit;
    private handleCancel;
    private animateDialog;
    private handleHeadlineChange;
    private handleActionsChange;
    private handleIconChange;
    private handleAnchorIntersection;
    private getIsConnectedPromise;
}