import { ElementRef, OnInit, QueryList } from '@angular/core';
import { ControlValueAccessor } from '@angular/forms';
import { MatOption } from '@angular/material/core';
import { MatSelect } from '@angular/material/select';
import { OnDestroyMixin } from '@w11k/ngx-componentdestroyed';
export declare class DropdownMultiSelectComponent extends OnDestroyMixin implements OnInit, ControlValueAccessor {
    matSelect: MatSelect;
    searchSelectInput: ElementRef;
    options: QueryList<MatOption>;
    /** Current search value */
    get searchValue(): string;
    private value;
    private onChange;
    private onTouched;
    private previousSelected;
    private change;
    private ENTER;
    private previousSelectedValues;
    constructor(matSelect: MatSelect);
    ngOnInit(): void;
    initMultiSelectedValues(): void;
    /**
     * Handles the key down event with MatSelect.
     * Do not handles ENTER key press
     * @param {KeyboardEvent} event
     */
    handleKeydown(event: KeyboardEvent): void;
    writeValue(value: string): void;
    onInputChange(value: any): void;
    onBlur(value: string): void;
    registerOnChange(fn: Function): void;
    registerOnTouched(fn: Function): void;
    /**
     * Focuses the search input field
     */
    focus(): void;
    /**
     * Resets the current search value
     * @param {boolean} focus whether to focus after resetting
     */
    reset(focus?: boolean): void;
    /**
     * 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 init;
}