/**
* @license Copyright (c) 2003-2026, CKSource Holding sp. z o.o. All rights reserved.
* For licensing, see LICENSE.md or https://ckeditor.com/legal/ckeditor-licensing-options
*/
/**
* @module ui/dropdown/menu/dropdownmenunestedmenuview
*/
import { FocusTracker, KeystrokeHandler, type PositioningFunction, type Locale } from "@ckeditor/ckeditor5-utils";
import type { FocusableView } from "../../focuscycler.js";
import { type BodyCollection } from "../../editorui/bodycollection.js";
import { DropdownMenuButtonView } from "./dropdownmenubuttonview.js";
import { DropdownMenuListView } from "./dropdownmenulistview.js";
import { View } from "../../view.js";
import { DropdownMenuNestedMenuPanelView, type DropdownMenuNestedMenuPanelPosition } from "./dropdownmenunestedmenupanelview.js";
import "../../../theme/components/dropdown/menu/dropdownmenu.css";
/**
* Represents a nested menu view.
*/
export declare class DropdownMenuNestedMenuView extends View implements FocusableView {
	/**
	* An array of delegated events for the dropdown menu definition controller.
	* These events are delegated to the dropdown menu element.
	*/
	static readonly DELEGATED_EVENTS: readonly ["mouseenter", "execute", "change:isOpen"];
	readonly id: string;
	/**
	* Button of the menu view.
	*/
	readonly buttonView: DropdownMenuButtonView;
	/**
	* Panel of the menu. It hosts children of the menu.
	*/
	readonly panelView: DropdownMenuNestedMenuPanelView;
	/**
	* List of nested menu entries.
	*/
	readonly listView: DropdownMenuListView;
	/**
	* Tracks information about the DOM focus in the menu.
	*/
	readonly focusTracker: FocusTracker;
	/**
	* Instance of the {@link module:utils/keystrokehandler~KeystrokeHandler}. It manages
	* keystrokes of the menu.
	*/
	readonly keystrokes: KeystrokeHandler;
	/**
	* Controls whether the menu is open, i.e. shows or hides the {@link #panelView panel}.
	*
	* @observable
	*/
	isOpen: boolean;
	/**
	* Controls whether the menu is enabled, i.e. its {@link #buttonView} can be clicked.
	*
	* @observable
	*/
	isEnabled: boolean;
	/**
	* (Optional) The additional CSS class set on the menu {@link #element}.
	*
	* @observable
	*/
	class: string | undefined;
	/**
	* The name of the position of the {@link #panelView}, relative to the menu.
	*
	* **Note**: The value is updated each time the panel gets {@link #isOpen open}.
	*
	* @observable
	* @default 'w'
	*/
	panelPosition: DropdownMenuNestedMenuPanelPosition;
	/**
	* The parent menu view of the menu. It is `null` for top-level menus.
	*
	* @observable
	* @default null
	*/
	readonly parentMenuView: DropdownMenuNestedMenuView | null;
	private _bodyCollection;
	/**
	* Creates a new instance of the DropdownMenuView class.
	*
	* @param locale
	* @param bodyCollection
	* @param id
	* @param label The label for the dropdown menu button.
	* @param parentMenuView The parent dropdown menu view, if any.
	*/
	constructor(locale: Locale, bodyCollection: BodyCollection, id: string, label: string, parentMenuView: DropdownMenuNestedMenuView | null);
	/**
	* An array of positioning functions used to determine the position of the dropdown menu panel.
	* The order of the functions in the array determines the priority of the positions to be tried.
	* The first function that returns a valid position will be used.
	*
	* @returns {Array<PositioningFunction>} An array of positioning functions.
	* @internal
	*/
	get _panelPositions(): Array<PositioningFunction>;
	/**
	* @inheritDoc
	*/
	override render(): void;
	/**
	* @inheritDoc
	*/
	override destroy(): void;
	/**
	* @inheritDoc
	*/
	focus(): void;
	private _handleParentMenuView;
	/**
	* Attach all keyboard behaviors for the menu view.
	*/
	private _attachBehaviors;
	/**
	* Mounts the portal view in the body when the menu is open and removes it when the menu is closed.
	* Binds keystrokes to the portal view when the menu is open.
	*/
	private _mountPanelOnOpen;
	/**
	* Removes the panel view from the editor's body and removes it from the focus tracker.
	*/
	private _removePanelFromBody;
	/**
	* Adds the panel view to the editor's body and sets up event listeners.
	*/
	private _addPanelToBody;
}