/**-----------------------------------------------------------------------------------------
* Copyright © 2025 Progress Software Corporation. All rights reserved.
* Licensed under commercial license. See LICENSE.md in the project root for more information
*-------------------------------------------------------------------------------------------*/
import { TemplateRef } from '@angular/core';
import * as i0 from "@angular/core";
/**
 * Represents the column header cell template of the TreeList
 * ([more information and example]({% slug templates_columns_treelist %}#toc-header-template)).
 * Helps to customize the table header cell for the column.
 * To define a header template, nest an `<ng-template>` tag with the
 * [`kendoTreeListHeaderTemplate`]({% slug api_treelist_headertemplatedirective %}) directive inside the `<kendo-treelist-column>` tag.
 *
 *  The template context is set to the current column and then the following additional fields are passed:
 * * `column`&mdash;Defines an instance of the [`ColumnComponent`]({% slug api_treelist_columncomponent %}) option.
 * * `columnIndex`&mdash;Defines the current column index.
 *
 * @example
 * ```html
 * <kendo-treelist-column field="name">
 *   <ng-template
 *     kendoTreeListHeaderTemplate
 *     let-column>
 *     {{ column.field }}
 *   </ng-template>
 * </kendo-treelist-column>
 * ```
 */
export declare class HeaderTemplateDirective {
    templateRef: TemplateRef<any>;
    constructor(templateRef: TemplateRef<any>);
    static ɵfac: i0.ɵɵFactoryDeclaration<HeaderTemplateDirective, [{ optional: true; }]>;
    static ɵdir: i0.ɵɵDirectiveDeclaration<HeaderTemplateDirective, "[kendoTreeListHeaderTemplate]", never, {}, {}, never, never, true, never>;
}