/**-----------------------------------------------------------------------------------------
* Copyright © 2026 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";
/**
 * Renders the group header content. To define the group template, nest an `<ng-template>` tag
 * with the `kendo<ComponentName>GroupTemplate` directive inside the component tag. The template context is
 * set to the current component. To get a reference to the current data item, use the `let-groupName` directive.
 *
 * - [Using `GroupTemplate` with the AutoComplete](https://www.telerik.com/kendo-angular-ui/components/dropdowns/autocomplete/templates#group-header-template)
 * - [Using `GroupTemplate` with the ComboBox](https://www.telerik.com/kendo-angular-ui/components/dropdowns/combobox/templates#group-header-template)
 * - [Using `GroupTemplate` with the MultiColumnComboBox](https://www.telerik.com/kendo-angular-ui/components/dropdowns/multicolumncombobox/templates#group-header-template)
 * - [Using `GroupTemplate` with the DropDownList](https://www.telerik.com/kendo-angular-ui/components/dropdowns/dropdownlist/templates#group-header-template)
 * - [Using `GroupTemplate` with the MultiSelect](https://www.telerik.com/kendo-angular-ui/components/dropdowns/multiselect/templates#group-header-template)
 *
 * @example
 * ```ts
 * import { groupBy } from '@progress/kendo-data-query';
 * _@Component({
 * selector: 'my-app',
 * template: `
 *  <kendo-combobox [data]="groupedData" textField="name" valueField="name">
 *    <ng-template kendoComboBoxGroupTemplate let-groupName>
 *      <span>Food type: {{groupName}} option</span>
 *    </ng-template>
 *  </kendo-combobox>
 * `
 * })
 * class AppComponent {
 *   public data = [
 *       { name: "Pork", category: "Food", subcategory: "Meat" },
 *       { name: "Pepper", category: "Food", subcategory: "Vegetables" },
 *       { name: "Beef", category: "Food", subcategory: "Meat" }
 *   ];
 *   public groupedData = groupBy(this.data, [{field: "subcategory"}]);
 * }
 * ```
 */
export declare class GroupTemplateDirective {
    templateRef: TemplateRef<any>;
    constructor(templateRef: TemplateRef<any>);
    static ɵfac: i0.ɵɵFactoryDeclaration<GroupTemplateDirective, never>;
    static ɵdir: i0.ɵɵDirectiveDeclaration<GroupTemplateDirective, "[kendoDropDownListGroupTemplate],[kendoComboBoxGroupTemplate],[kendoMultiColumnComboBoxGroupTemplate],[kendoAutoCompleteGroupTemplate],[kendoMultiSelectGroupTemplate]", never, {}, {}, never, never, true, never>;
}