import { ElementRef, EventEmitter, TemplateRef } from '@angular/core';
import { MatCheckboxChange } from '@angular/material/checkbox';
import { CanColor } from '@angular/material/core';
import { MtnaPopoverConfig } from '@mtna/lib-ui/popover';
import { FacetCount, Filter, SearchField, SearchFieldValue } from '@mtna/search-manager-ui';
import { GetSearchFieldValuesPipe } from './pipes';
import * as i0 from "@angular/core";
export declare const _FacetFilterMixinBase: import("@angular/material/core/common-behaviors/constructor").Constructor<CanColor> & import("@angular/material/core/common-behaviors/constructor").AbstractConstructor<CanColor> & {
    new (_elementRef: ElementRef): {
        _elementRef: ElementRef;
    };
};
export declare class MtnaFacetFilterComponent extends _FacetFilterMixinBase implements CanColor {
    protected el: ElementRef<HTMLElement>;
    private getSearchFieldValuesPipe;
    static iteration: number;
    /** Counts for facets */
    count: FacetCount | null | undefined;
    /** How many options can be displayed before using dropdown */
    maxDisplayed: number;
    /** Popover configuration to describe the control */
    popover: MtnaPopoverConfig | null | undefined;
    /** Required `SearchFied` that describes the filter */
    searchField: SearchField | null | undefined;
    /** The selected filter's field names */
    selected: Array<string>;
    /** Label for filter-select */
    selectLabel: string;
    /** Event emitted when the filter's selection changes */
    filter: EventEmitter<Filter>;
    /** Reference for custom header */
    customHeaderRef: TemplateRef<unknown> | undefined;
    /** Reference for custom filter option */
    customOptionRef: TemplateRef<unknown> | undefined;
    _iterationId: string;
    _clearText: string;
    _clearAriaLabel: string;
    _showText: string;
    _showAriaLabel: string;
    constructor(el: ElementRef<HTMLElement>, getSearchFieldValuesPipe: GetSearchFieldValuesPipe);
    /**
     * Removes or adds SearchFieldValue object to selectedFilters array.
     * @param  ev - checkbox change
     * @param  facet - object storing key, value and display name
     */
    changeSelection(ev: MatCheckboxChange, facet: SearchFieldValue): void;
    /** Clears all selected filters */
    clearAll(): void;
    /**
     * Emits a filter event.
     * @param field filter's field property
     * @param values filters values
     */
    handleFilterChange(field: string, values: SearchFieldValue[]): void;
    /** Selects all filters. */
    selectAll(): void;
    /**
     * Selects only the facet that is passed to method.
     * @param  facet - facet to be selected
     */
    selectOnly(facet: SearchFieldValue): void;
    _trackByKey(_: number, facet: SearchFieldValue): string;
    /**
     * Emits a Filter after any change to selection.
     */
    private _emitFilterEvent;
    static ɵfac: i0.ɵɵFactoryDeclaration<MtnaFacetFilterComponent, never>;
    static ɵcmp: i0.ɵɵComponentDeclaration<MtnaFacetFilterComponent, "mtna-facet-filter", never, { "color": "color"; "count": "count"; "maxDisplayed": "maxDisplayed"; "popover": "popover"; "searchField": "searchField"; "selected": "selected"; "selectLabel": "selectLabel"; }, { "filter": "filter"; }, ["customHeaderRef", "customOptionRef"], never>;
}