/**-----------------------------------------------------------------------------------------
* Copyright © 2025 Progress Software Corporation. All rights reserved.
* Licensed under commercial license. See LICENSE.md in the project root for more information
*-------------------------------------------------------------------------------------------*/
import { EventEmitter, OnDestroy, OnChanges, NgZone } from '@angular/core';
import { TreeViewComponent } from './treeview.component';
import { CheckableSettings } from './checkable-settings';
import { CheckedState } from './checkbox/checked-state';
import { Subscription } from 'rxjs';
import { TreeItem } from './treeitem.interface';
import { TreeItemLookup } from './treeitem-lookup.interface';
import * as i0 from "@angular/core";
/**
 * Represents a directive that manages the in-memory checked state of the TreeView node
 * ([see example](slug:checkboxes_treeview)).
 *
 * @example
 * ```html
 * <kendo-treeview
 *      kendoTreeViewCheckable
 *      checkBy="id"
 *      [(checkedKeys)]="checkedKeys"
 *      [nodes]="data">
 *  </kendo-treeview>
 * ```
 *
 * @remarks
 * Applied to: {@link TreeViewComponent}
 */
export declare class CheckDirective implements OnChanges, OnDestroy {
    protected treeView: TreeViewComponent;
    private zone;
    /**
     * @hidden
     */
    set isChecked(value: (item: object, index: string) => CheckedState);
    /**
     * Defines the item key stored in the `checkedKeys` collection.
     */
    checkKey: string | ((context: TreeItem) => any);
    /**
     * Defines the collection that stores the checked keys
     * ([see example](slug:checkboxes_treeview)).
     */
    checkedKeys: any[];
    /**
     * Defines the checkable settings
     * ([see example](slug:checkboxes_treeview#setup)).
     * If you do not provide a value, the default [`CheckableSettings`](slug:api_treeview_checkablesettings) apply.
     */
    checkable: boolean | CheckableSettings | string;
    /**
     * Fires when the `checkedKeys` collection updates.
     */
    checkedKeysChange: EventEmitter<any[]>;
    protected subscriptions: Subscription;
    private get options();
    private checkActions;
    /**
     * Reflects the internal `checkedKeys` state.
     */
    private state;
    private clickSubscription;
    /**
     * Holds the last emitted `checkedKeys` collection.
     */
    private lastChange;
    constructor(treeView: TreeViewComponent, zone: NgZone);
    ngOnChanges(changes: any): void;
    ngOnDestroy(): void;
    protected isItemChecked(dataItem: any, index: string): CheckedState;
    protected isIndexChecked(index: string): CheckedState;
    protected itemKey(item: TreeItem): any;
    protected check(e: any): void;
    protected checkSingle(node: any): void;
    protected checkMultiple(node: TreeItemLookup): void;
    protected toggleCheckOnClick(): void;
    private unsubscribeClick;
    private checkNode;
    private uncheckChildren;
    private checkParents;
    private allChildrenSelected;
    private notify;
    private addCheckedItemsChildren;
    static ɵfac: i0.ɵɵFactoryDeclaration<CheckDirective, never>;
    static ɵdir: i0.ɵɵDirectiveDeclaration<CheckDirective, "[kendoTreeViewCheckable]", never, { "isChecked": { "alias": "isChecked"; "required": false; }; "checkKey": { "alias": "checkBy"; "required": false; }; "checkedKeys": { "alias": "checkedKeys"; "required": false; }; "checkable": { "alias": "kendoTreeViewCheckable"; "required": false; }; }, { "checkedKeysChange": "checkedKeysChange"; }, never, never, true, never>;
}