/**-----------------------------------------------------------------------------------------
* Copyright © 2025 Progress Software Corporation. All rights reserved.
* Licensed under commercial license. See LICENSE.md in the project root for more information
*-------------------------------------------------------------------------------------------*/
import { ChangeDetectorRef, ElementRef, NgZone, Renderer2 } from '@angular/core';
import { ContextService } from '../common/provider.service';
import * as i0 from "@angular/core";
/**
 * Represents a directive that manages keyboard navigation for a column menu item ([see example](slug:columnmenu_grid#customizing-the-content)).
 *
 * @example
 * ```html
 * <ng-template kendoGridColumnMenuTemplate let-service="service" let-column="column">
 *   <kendo-grid-columnmenu-sort #sortItem [kendoGridColumnMenuItem]="sortItem" [service]="service"></kendo-grid-columnmenu-sort>
 * </ng-template>
 * ```
 * @remarks
 * Applied to:
 * {@link ColumnMenuChooserComponent},
 * {@link ColumnMenuFilterComponent},
 * {@link ColumnMenuSortComponent},
 * {@link ColumnMenuLockComponent},
 * {@link ColumnMenuStickyComponent},
 * {@link ColumnMenuComponent},
 * {@link ColumnMenuItemComponent},
 * {@link ColumnMenuPositionComponent},
 * {@link ColumnMenuAutoSizeAllColumnsComponent},
 * {@link ColumnMenuAutoSizeColumnComponent}.
 */
export declare class ColumnMenuItemDirective {
    hostElement: ElementRef;
    private renderer;
    private ngZone;
    private cdr;
    private ctx;
    /**
     * Reference to the Grid column menu item. Required when you want to include the item in the built-in keyboard navigation.
     */
    menuItemComponent: any;
    /**
     * Holds the first focusable element.
     */
    firstFocusableElement: HTMLElement;
    /**
     * Holds the last focusable element.
     */
    lastFocusableElement: HTMLElement;
    /**
     * @hidden
     */
    set isFirst(value: boolean);
    /**
     * @hidden
     */
    get isFirst(): boolean;
    /**
     * @hidden
     */
    set isLast(value: boolean);
    /**
     * @hidden
     */
    get isLast(): boolean;
    private _isFirst;
    private _isLast;
    private columnMenuItems;
    private subs;
    constructor(hostElement: ElementRef, renderer: Renderer2, ngZone: NgZone, cdr: ChangeDetectorRef, ctx: ContextService);
    ngAfterViewInit(): void;
    ngOnDestroy(): void;
    private onTab;
    private getLastColumnMenuItem;
    private isExpandableItem;
    static ɵfac: i0.ɵɵFactoryDeclaration<ColumnMenuItemDirective, never>;
    static ɵdir: i0.ɵɵDirectiveDeclaration<ColumnMenuItemDirective, "[kendoGridColumnMenuItem]", never, { "menuItemComponent": { "alias": "kendoGridColumnMenuItem"; "required": false; }; }, {}, never, never, true, never>;
}