import { ForgeAiDropdownMenuItemComponent } from './ai-dropdown-menu-item.js';
/**
 * Controller class to handle keyboard navigation for dropdown menus.
 *
 * This controller manages all aspects of keyboard navigation within dropdown menus,
 * including focus management, selection state, and keyboard event delegation.
 * It supports both parent dropdown menus and nested submenus with proper
 * navigation isolation and event bubbling control.
 *
 * @example
 * ```typescript
 * const controller = new DropdownNavigationController(
 *   hostElement,
 *   () => getMenuItems(),
 *   (index) => selectItem(index),
 *   () => closeDropdown(),
 *   () => openDropdown(),
 *   () => isSubmenu()
 * );
 *
 * // Handle keyboard events
 * controller.handleKeyDown(keyboardEvent, isOpen, triggerButton);
 * ```
 */
export declare class DropdownNavigationController {
    private _host;
    private _getMenuItems;
    private _onItemSelect;
    private _onClose;
    private _onOpen;
    private _isSubmenu;
    private _selectedIndex;
    private _openedViaKeyboard;
    constructor(_host: HTMLElement, _getMenuItems: () => ForgeAiDropdownMenuItemComponent[], _onItemSelect: (index: number) => void, _onClose: () => void, _onOpen: () => void, _isSubmenu: () => boolean);
    /**
     * Gets the current selected index
     */
    get selectedIndex(): number;
    /**
     * Sets the selected index
     */
    set selectedIndex(value: number);
    /**
     * Gets whether the dropdown was opened via keyboard
     */
    get openedViaKeyboard(): boolean;
    /**
     * Sets whether the dropdown was opened via keyboard
     */
    set openedViaKeyboard(value: boolean);
    /**
     * Handles keyboard events for the dropdown menu
     */
    handleKeyDown(event: KeyboardEvent, isOpen: boolean, triggerButton: HTMLElement): boolean;
    /**
     * Moves the selection by the specified direction
     */
    private _moveSelection;
    /**
     * Updates the focus state of menu items
     */
    private _updateItemFocus;
    /**
     * Focuses the first item in the menu
     */
    focusFirstItem(): void;
    /**
     * Clears focus from all menu items
     */
    clearItemFocus(): void;
    /**
     * Resets the navigation state when dropdown opens
     */
    onOpen(): void;
    /**
     * Resets the navigation state
     */
    reset(): void;
}