import { AfterViewInit, ChangeDetectorRef, ElementRef, OnDestroy, OnInit, QueryList } from '@angular/core';
import { ControlValueAccessor } from '@angular/forms';
import { MatSelect } from '@angular/material/select';
import { MatCheckboxChange } from '@angular/material/checkbox';
import { MatOption } from '@angular/material/core';
export declare class MatSelectSearchComponent implements OnInit, OnDestroy, AfterViewInit, ControlValueAccessor {
    matSelect: MatSelect;
    private changeDetectorRef;
    matOption: MatOption;
    /** Label of the search placeholder */
    placeholderLabel: string;
    multiple: boolean;
    showSearch: boolean;
    /** Label to be shown when no entries are found. Set to null if no message should be shown. */
    noEntriesFoundLabel: string;
    /** Reference to the search input field */
    searchSelectInput: ElementRef;
    innerSelectSearch: ElementRef;
    get isInsideMatOption(): boolean;
    /** Current search value */
    get value(): string;
    private _value;
    onChange: Function;
    onTouched: Function;
    /** Reference to the MatSelect options */
    _options: QueryList<MatOption>;
    /** Previously selected values when using <mat-select [multiple]="true">*/
    private previousSelectedValues;
    /** Whether the backdrop class has been set */
    private overlayClassSet;
    /** Event that emits when the current value changes */
    private change;
    private AllClicked;
    /** Subject that emits when the component has been destroyed. */
    private _onDestroy;
    constructor(matSelect: MatSelect, changeDetectorRef: ChangeDetectorRef, matOption?: MatOption);
    ngOnInit(): void;
    ngOnDestroy(): void;
    ngAfterViewInit(): void;
    _handleKeydown(event: KeyboardEvent): void;
    writeValue(value: string): void;
    onInputChange(value: any): void;
    onBlur(value: string): void;
    registerOnChange(fn: Function): void;
    registerOnTouched(fn: Function): void;
    _focus(): void;
    /**
     * Resets the current search value
     * {boolean} focus whether to focus after resetting
     *
     */
    _reset(focus?: boolean): void;
    /**
     * Sets the overlay class  to correct offsetY
     * so that the selected option is at the position of the select box when opening
     */
    private setOverlayClass;
    /**
     * Initializes handling <mat-select [multiple]="true">
     * Note: to improve this code, mat-select should be extended to allow disabling resetting the selection while filtering.
     */
    private initMultipleHandling;
    private getWidth;
    _noEntriesFound(): boolean;
    toggleSelection(change: MatCheckboxChange, check: any): void;
    ischecked(check: any): boolean;
    isIndeterminate(): boolean;
}