/// <reference types="react" />
import { IContextualMenuProps, IContextualMenuItem } from './ContextualMenu.types';
import { DirectionalHint } from '../../common/DirectionalHint';
import { BaseComponent } from '../../Utilities';
export interface IContextualMenuState {
    expandedMenuItemKey?: string;
    expandedByMouseClick?: boolean;
    dismissedMenuItemKey?: string;
    contextualMenuItems?: IContextualMenuItem[];
    contextualMenuTarget?: Element;
    submenuTarget?: Element;
    positions?: any;
    slideDirectionalClassName?: string;
    subMenuId?: string;
    submenuDirection?: DirectionalHint;
}
export declare function getSubmenuItems(item: IContextualMenuItem): any;
/**
 * Returns true if a list of menu items can contain a checkbox
 */
export declare function canAnyMenuItemsCheck(items: IContextualMenuItem[]): boolean;
export declare class ContextualMenuBase extends BaseComponent<IContextualMenuProps, IContextualMenuState> {
    static defaultProps: IContextualMenuProps;
    private _host;
    private _previousActiveElement;
    private _isFocusingPreviousElement;
    private _enterTimerId;
    private _targetWindow;
    private _target;
    private _isScrollIdle;
    private _scrollIdleTimeoutId;
    private _processingExpandCollapseKeyOnly;
    private _shouldUpdateFocusOnMouseEvent;
    private _gotMouseMove;
    private _adjustedFocusZoneProps;
    private _classNames;
    constructor(props: IContextualMenuProps);
    dismiss: (ev?: any, dismissAll?: boolean | undefined) => void;
    componentWillUpdate(newProps: IContextualMenuProps): void;
    componentWillMount(): void;
    componentDidMount(): void;
    componentWillUnmount(): void;
    render(): JSX.Element | null;
    private _onMenuOpened();
    private _onMenuClosed();
    /**
     * Gets the focusZoneDirection by using the arrowDirection if specified,
     * the direction specificed in the focusZoneProps, or defaults to FocusZoneDirection.vertical
     */
    private _getFocusZoneDirection();
    private _onRenderSubMenu(subMenuProps);
    private _onRenderMenuList;
    private _renderMenuItem(item, index, focusableElementIndex, totalItemCount, hasCheckmarks, hasIcons);
    private _renderSectionItem(item, menuClassNames, index, hasCheckmarks, hasIcons);
    private _renderListItem(content, key, classNames, title?);
    private _renderSeparator(index, classNames, top?, fromSection?);
    private _renderNormalItem(item, classNames, index, focusableElementIndex, totalItemCount, hasCheckmarks, hasIcons);
    private _renderHeaderMenuItem(item, classNames, index, hasCheckmarks, hasIcons);
    private _renderAnchorMenuItem(item, classNames, index, focusableElementIndex, totalItemCount, hasCheckmarks, hasIcons);
    private _renderButtonItem(item, classNames, index, focusableElementIndex, totalItemCount, hasCheckmarks?, hasIcons?);
    private _renderSplitButton(item, classNames, index, focusableElementIndex, totalItemCount, hasCheckmarks?, hasIcons?);
    private _onKeyDown;
    private _shouldHandleKeyDown;
    private _onMenuFocusCapture;
    private _onKeyUp;
    private _shouldHandleKeyUp;
    private _isExpandCollapseKey(ev);
    private _keyHandler;
    /**
     * Checks if the submenu should be closed
     */
    private _shouldCloseSubMenu;
    private _onMenuKeyDown;
    /**
     * Scroll handler for the callout to make sure the mouse events
     * for updating focus are not interacting during scroll
     */
    private _onScroll;
    private _onItemMouseEnterBase;
    private _onItemMouseMoveBase;
    private _shouldIgnoreMouseEvent();
    private _onMouseItemLeave;
    /**
     * Handles updating focus when mouseEnter or mouseMove fire.
     * As part of updating focus, This function will also update
     * the expand/collapse state accordingly.
     */
    private _updateFocusOnMouseEvent(item, ev, target?);
    private _onItemMouseDown;
    private _onItemClick;
    private _onItemClickBase;
    private _onAnchorClick;
    private _executeItemClick;
    private _onItemKeyDown;
    private _cancelSubMenuTimer;
    private _onItemSubMenuExpand;
    private _getSubmenuProps();
    private _findItemByKey(key);
    /**
     * Returns the item that mathes a given key if any.
     * @param key The key of the item to match
     * @param items The items to look for the key
     */
    private _findItemByKeyFromItems(key, items);
    private _onSubMenuDismiss;
    private _setTargetWindowAndElement(target);
    private _getSubMenuId;
    private _onPointerAndTouchEvent;
}