import { OnInit, SimpleChanges } from '@angular/core';
import { FormControl, FormGroup } from '@angular/forms';
import { MatSelect } from '@angular/material/select';
import { ReplaySubject, Subject } from 'rxjs';
import { QuestionBase, GroupBase } from '@ddcheck/common';
export declare class CountryMultipleQuestionComponent implements OnInit {
    multiSelect: MatSelect;
    question: QuestionBase<any>;
    group: GroupBase<any>;
    index: number;
    form: FormGroup;
    isDetail: boolean;
    protected _onDestroy: Subject<void>; /** Subject that emits when the component has been destroyed. */
    countryCtrl: FormControl; /** control for the selected country */
    countryFilterCtrl: FormControl; /** control for the MatSelect filter*/
    filteredCountries: ReplaySubject<{
        key: string;
        value: string;
    }[]>;
    constructor();
    ngOnChanges(changes: SimpleChanges): void;
    ngAfterViewInit(): void;
    ngOnInit(): void;
    get isValid(): any;
    get control(): any;
    setInitialValue(): void;
    filterCountries(): void;
    ngOnDestroy(): void;
}
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