/**-----------------------------------------------------------------------------------------
* Copyright © 2025 Progress Software Corporation. All rights reserved.
* Licensed under commercial license. See LICENSE.md in the project root for more information
*-------------------------------------------------------------------------------------------*/
import { OnInit, EventEmitter, ElementRef, Renderer2 } from '@angular/core';
import { LocalizationService } from '@progress/kendo-angular-l10n';
import { FilterService } from './filter.service';
import { CompositeFilterDescriptor } from '@progress/kendo-data-query';
import { FilterExpression } from './model/filter-expression';
import { Direction } from './util';
import { ChangeDetectorRef } from '@angular/core';
import { OnDestroy } from '@angular/core';
import { FilterItem } from './util';
import { NavigationService } from './navigation.service';
import * as i0 from "@angular/core";
/**
 * Represents the [Kendo UI Filter component for Angular]({% slug overview_filter %}).
 * The Filter component enables users to define and apply complex filter criteria.
 *
 * @example
 * ```ts
 * @Component({
 *   selector: 'my-app',
 *   template: `
 *     <kendo-filter [filters]="filters" (valueChange)="onValueChange($event)"></kendo-filter>
 *   `
 * })
 * export class AppComponent {
 *   public filters: FilterExpression[] = [
 *     {
 *       name: 'country',
 *       label: 'Country',
 *       filter: 'string',
 *       operators: ['eq', 'neq'],
 *     },
 *     {
 *       name: 'budget',
 *       filter: 'number'
 *     }
 *   ];
 *
 *   onValueChange(e: CompositeFilterDescriptor) {
 *     console.log(e);
 *   }
 * }
 * ```
 *
 * @remarks
 * Supported children components are: {@link CustomMessagesComponent}, {@link FilterFieldComponent}.
 */
export declare class FilterComponent implements OnInit, OnDestroy {
    private filterService;
    private localization;
    private cdr;
    private element;
    private navigationService;
    private renderer;
    /**
     * @hidden
     */
    focusout(): void;
    /**
     * @hidden
     */
    focusin(): void;
    /**
     * @hidden
     */
    onKeydown(event: KeyboardEvent): void;
    direction: Direction;
    /**
     * Specifies the available user-defined filters. At least one filter should be provided.
     */
    set filters(_filters: FilterExpression[]);
    get filters(): FilterExpression[];
    /**
     * Sets the initial `value` of the Filter component.
     */
    set value(value: CompositeFilterDescriptor);
    get value(): CompositeFilterDescriptor;
    /**
     * Fires every time the Filter component value is updated.
     * That is each time a Filter Group or Filter Expression is added, removed, or updated.
     */
    valueChange: EventEmitter<CompositeFilterDescriptor>;
    private localizationSubscription;
    private filterFieldsSubscription;
    private _value;
    private filterFields;
    private _filterItems;
    get filterItems(): FilterItem[];
    get toolbarElement(): HTMLElement;
    constructor(filterService: FilterService, localization: LocalizationService, cdr: ChangeDetectorRef, element: ElementRef, navigationService: NavigationService, renderer: Renderer2);
    ngOnInit(): void;
    ngAfterViewInit(): void;
    ngOnDestroy(): void;
    private filterFieldsChanged;
    private _currentFilter;
    /**
     * @hidden
     */
    get currentFilter(): CompositeFilterDescriptor;
    /**
     * @hidden
     */
    set currentFilter(value: CompositeFilterDescriptor);
    /**
     * @hidden
     */
    onValueChange(isRemoveOperation?: any): void;
    private normalizeFilter;
    private setValue;
    private normalizeValue;
    /**
     * @hidden
     */
    messageFor(key: string): string;
    /**
     * @hidden
     */
    private filtersTypeChanged;
    static ɵfac: i0.ɵɵFactoryDeclaration<FilterComponent, never>;
    static ɵcmp: i0.ɵɵComponentDeclaration<FilterComponent, "kendo-filter", never, { "filters": { "alias": "filters"; "required": false; }; "value": { "alias": "value"; "required": false; }; }, { "valueChange": "valueChange"; }, ["filterFields"], never, true, never>;
}