import { OnDestroy, OnInit } from '@angular/core';
import { MatCalendar } from '@angular/material/datepicker';
import { DateAdapter, MatDateFormats } from '@angular/material/core';
import { FormGroup } from '@angular/forms';
import { DatepickerService } from '../../services/datepicker.service';
import { Subject } from 'rxjs';
import * as i0 from "@angular/core";
/**
 * Provides implementation of date picker custom header and being used in date-picker component.
 * @export
 * @class DatePickerHeaderComponent
 * @implements {OnInit}
 * @implements {OnDestroy}
 */
export declare class DatePickerHeaderComponent implements OnInit, OnDestroy {
    calendar: MatCalendar<Date>;
    dateAdapter: DateAdapter<Date>;
    dateFormats: MatDateFormats;
    private datepickerService;
    destroy$: Subject<boolean>;
    group: FormGroup;
    arrowDirection: boolean;
    range: {
        start: string;
        end: string;
    };
    isRangeSelection: boolean;
    selectedDate: string;
    datePickerInfo: any;
    constructor(calendar: MatCalendar<Date>, dateAdapter: DateAdapter<Date>, dateFormats: MatDateFormats, datepickerService: DatepickerService);
    /**
     * Implementation of ngOnInit lifecycle hook method to initialize components instance properties.
     * @memberof DatePickerHeaderComponent
     */
    ngOnInit(): void;
    /**
     * Sets the min and max date range.
     * @param {({ start: Date | string; end: Date | string })} range
     * @memberof DatePickerHeaderComponent
     */
    setRange(range: {
        start: Date | string;
        end: Date | string;
    }): void;
    /**
     * Implementation of getMonthLabel method to get the month label.
     * @readonly
     * @return {string}
     * @memberof DatePickerHeaderComponent
     */
    get getMonthLabel(): string;
    /**
     * Sets previous month in a calendar on click of previous month arrow in date picker.
     * @param {('month' | 'year')} mode
     * @memberof DatePickerHeaderComponent
     */
    setPreviousMonth(mode: 'month' | 'year'): void;
    /**
     * Sets next month in a calendar on click of previous month arrow in date picker.
     * @param {('month' | 'year')} mode
     * @memberof DatePickerHeaderComponent
     */
    setNextMonth(mode: 'month' | 'year'): void;
    /**
     * Sets the calendar current view on the open of year drop down in date picker.
     * @memberof DatePickerHeaderComponent
     */
    setCalendarView(): void;
    /**
     * Implementation of ngOnDestroy lifecycle hook method to unsubscribe the open observable subscriptions.
     * @memberof DatePickerHeaderComponent
     */
    ngOnDestroy(): void;
    static ɵfac: i0.ɵɵFactoryDeclaration<DatePickerHeaderComponent, never>;
    static ɵcmp: i0.ɵɵComponentDeclaration<DatePickerHeaderComponent, "ieeesa-date-picker-header", never, { "group": { "alias": "group"; "required": false; }; }, {}, never, never, true, never>;
}