import { FocusMonitor } from '@angular/cdk/a11y';
import { BooleanInput } from '@angular/cdk/coercion';
import { ChangeDetectorRef, DoCheck, ElementRef, EventEmitter, OnDestroy, OnInit, TemplateRef } from '@angular/core';
import { ControlValueAccessor, NgControl } from '@angular/forms';
import { CanColor, CanColorCtor, MatOptionSelectionChange } from '@angular/material/core';
import { MatSelect } from '@angular/material/select';
import { MtnaChip } from '@mtna/lib-ui/chips';
import { MtnaPopoverConfig } from '@mtna/lib-ui/popover';
import { SearchFieldValue } from '@mtna/search-manager-ui';
import { ReplaySubject } from 'rxjs';
import * as i0 from "@angular/core";
declare class FilterSelectBase {
    _elementRef: ElementRef;
    constructor(_elementRef: ElementRef);
}
export declare const _FilterSelectMixinBase: CanColorCtor & typeof FilterSelectBase;
/**
 * Select control to select filters, uses a virtual scroll, search, and supports reactive forms.
 * @author Will Davis <will.davis@mtna.us>
 */
export declare class FilterSelectComponent extends _FilterSelectMixinBase implements CanColor, ControlValueAccessor, DoCheck, OnDestroy, OnInit {
    _control: NgControl;
    private _changeDetectorRef;
    private _focusMonitor;
    static ngAcceptInputType_disabled: BooleanInput;
    /** Popover configuration to describe the control */
    config: MtnaPopoverConfig | null | undefined;
    /** Whether the control is disabled */
    get disabled(): boolean;
    set disabled(value: boolean);
    private _disabled;
    /** Maximum number of selections */
    maxSelection: number | null;
    /** Whether the user can make multiple selections. Default true */
    multiSelect: boolean;
    /** All the filters to choose from in the select */
    set options(options: Array<SearchFieldValue>);
    get options(): Array<SearchFieldValue>;
    private _options;
    /** Whether the filters can be reorderd in the chip list */
    orderable: boolean;
    /** Whether the control is required */
    required: boolean;
    /** Label for mat-select, defaults to "Filter(s)" */
    selectLabel: string;
    /** Placeholder for mat-select, defaults to "Choose filters..." */
    selectPlaceholder: string;
    /** Suffix icon for the select, defaults to null */
    suffixIcon: string | null;
    /** The selected filters and value for this control, if it exists */
    set value(value: Array<SearchFieldValue>);
    get value(): Array<SearchFieldValue>;
    private _value;
    /** Changed value of the form control */
    readonly selectionChange: EventEmitter<SearchFieldValue[]>;
    customOptionRef: TemplateRef<unknown> | undefined;
    /** Internal <mat-select> */
    matSelect: MatSelect;
    /** Whether any search results were found */
    _noSearchResults: boolean;
    /** A subset of all the facets, filtered by the search text */
    _filteredFacets$: ReplaySubject<SearchFieldValue[]>;
    private _onDestroy;
    _onTouched: () => void;
    private _controlValueAccessorChangeFn;
    constructor(_control: NgControl, elementRef: ElementRef<HTMLElement>, _changeDetectorRef: ChangeDetectorRef, _focusMonitor: FocusMonitor);
    /**
     * When the mtna-select-search emits search text, filter the visible facets in the select.
     *
     * @param text search text to filter the facets
     */
    filterFacets(text: string): void;
    /**
     * When the select panel is opened or closed, manipulate the options visible.
     * When the panel is opened, show the full list of facets.
     * When the panel is closed, set the selected value on the filtered subject so it will work with the MatSelect's internal selection model.
     *
     * @param opened Whether the panel is being opened
     */
    handleOpenedChange(opened: boolean): void;
    ngDoCheck(): void;
    ngOnDestroy(): void;
    ngOnInit(): void;
    registerOnChange(fn: (value: unknown) => void): void;
    registerOnTouched(fn: () => void): void;
    setDisabledState(isDisabled: boolean): void;
    writeValue(obj: SearchFieldValue[] | null | undefined): void;
    /**
     * Comparison function for use with `compareWith`
     */
    _compareFacets(v1: SearchFieldValue, v2: SearchFieldValue): boolean;
    _emitChangeEvent(newValue: Array<SearchFieldValue>): void;
    /**
     * Manually handle when options are selected/unselected.
     * @param event option selection event
     */
    _handleOptionSelectionChange(event: MatOptionSelectionChange): void;
    /**
     * Removes a variable from the array of selected facets;
     * @param id the variable identifier
     */
    _removeFacet(id: string): void;
    _reorderFacets(event: Array<MtnaChip>): void;
    _trackByFacetKey(_: number, facet: SearchFieldValue): string | null;
    /**
     * Manually handle when options are selected/unselected in a multi select
     * @param event option selection event
     */
    private _handleMultiOptionSelectionChange;
    /**
     * Manually handle when options are selected/unselected in a single select
     * @param event option selection event
     */
    private _handleSingleOptionSelectionChange;
    static ɵfac: i0.ɵɵFactoryDeclaration<FilterSelectComponent, [{ optional: true; self: true; }, null, null, null]>;
    static ɵcmp: i0.ɵɵComponentDeclaration<FilterSelectComponent, "mtna-filter-select", never, { "color": "color"; "config": "config"; "disabled": "disabled"; "maxSelection": "maxSelection"; "multiSelect": "multiSelect"; "options": "options"; "orderable": "orderable"; "required": "required"; "selectLabel": "selectLabel"; "selectPlaceholder": "selectPlaceholder"; "suffixIcon": "suffixIcon"; "value": "value"; }, { "selectionChange": "selectionChange"; }, ["customOptionRef"], never>;
}
export {};