import { AfterContentInit, ChangeDetectorRef, EventEmitter, OnChanges, OnDestroy, SimpleChanges } from '@angular/core';
import { DateAdapter } from '@koobiq/components/core';
import { Subject } from 'rxjs';
import { KbqCalendarCellCssClasses } from './calendar-body.component';
import { KbqDatepickerIntl } from './datepicker-intl';
import { KbqMonthView } from './month-view.component';
import * as i0 from "@angular/core";
/**
 * A calendar that is used as part of the datepicker.
 * @docs-private
 */
export declare class KbqCalendar<D> implements AfterContentInit, OnDestroy, OnChanges {
    private readonly adapter;
    private changeDetectorRef;
    /** A date representing the period (month or year) to start the calendar in. */
    get startAt(): D | null;
    set startAt(value: D | null);
    private _startAt;
    /** The currently selected date. */
    get selected(): D | null;
    set selected(value: D | null);
    private _selected;
    /** The minimum selectable date. */
    get minDate(): D | null;
    set minDate(value: D | null);
    private _minDate;
    /** The maximum selectable date. */
    get maxDate(): D | null;
    set maxDate(value: D | null);
    private _maxDate;
    /**
     * The current active date. This determines which time period is shown and which date is
     * highlighted and used as the anchor on  when using keyboard navigation.
     */
    get activeDate(): D;
    set activeDate(value: D | null);
    private _activeDate;
    /** Function used to filter which dates are selectable. */
    dateFilter: (date: D) => boolean;
    /** Function that can be used to add custom CSS classes to dates. */
    dateClass: (date: D) => KbqCalendarCellCssClasses;
    /** Emits when the currently selected date changes. */
    readonly selectedChange: EventEmitter<D>;
    /**
     * Emits the year chosen in multiyear view.
     * This doesn't imply a change on the selected date.
     */
    readonly yearSelected: EventEmitter<D>;
    /**
     * Emits the month chosen in year view.
     * This doesn't imply a change on the selected date.
     */
    readonly monthSelected: EventEmitter<D>;
    /** Emits when any date is selected. */
    readonly userSelection: EventEmitter<void>;
    /** Reference to the current month view component. */
    monthView: KbqMonthView<D>;
    /**
     * Emits whenever there is a state change that the header may need to respond to.
     */
    stateChanges: Subject<void>;
    /** The input element this datepicker is associated with. */
    datepickerInput: any;
    private readonly intlChanges;
    /** Subscription to value changes in the associated input element. */
    private inputSubscription;
    constructor(intl: KbqDatepickerIntl, adapter: DateAdapter<D>, changeDetectorRef: ChangeDetectorRef);
    ngOnChanges(changes: SimpleChanges): void;
    ngAfterContentInit(): void;
    ngOnDestroy(): void;
    /**
     * Register an input with this calendar.
     * @param input The calendar input to register with this calendar.
     */
    registerInput(input: any): void;
    /** Updates today's date after an update of the active date */
    updateTodaysDate(): void;
    /** Handles date selection in the month view. */
    dateSelected(date: D): void;
    userSelected(): void;
    /**
     * @param obj The object to check.
     * @returns The given object if it is both a date instance and valid, otherwise null.
     */
    private getValidDateOrNull;
    private getActiveDateDefault;
    static ɵfac: i0.ɵɵFactoryDeclaration<KbqCalendar<any>, [null, { optional: true; }, null]>;
    static ɵcmp: i0.ɵɵComponentDeclaration<KbqCalendar<any>, "kbq-calendar", ["kbqCalendar"], { "startAt": { "alias": "startAt"; "required": false; }; "selected": { "alias": "selected"; "required": false; }; "minDate": { "alias": "minDate"; "required": false; }; "maxDate": { "alias": "maxDate"; "required": false; }; "dateFilter": { "alias": "dateFilter"; "required": false; }; "dateClass": { "alias": "dateClass"; "required": false; }; }, { "selectedChange": "selectedChange"; "yearSelected": "yearSelected"; "monthSelected": "monthSelected"; "userSelection": "userSelection"; }, never, never, true, never>;
}