import { Directionality } from '@angular/cdk/bidi';
import { Overlay, OverlayRef, ScrollStrategy } from '@angular/cdk/overlay';
import { AfterViewInit, ChangeDetectorRef, EventEmitter, InjectionToken, NgZone, OnDestroy, ViewContainerRef } from '@angular/core';
import { DateAdapter } from '@koobiq/components/core';
import { Subject } from 'rxjs';
import { KbqCalendarCellCssClasses } from './calendar-body.component';
import { KbqCalendar } from './calendar.component';
import { KbqDatepickerInput } from './datepicker-input.directive';
import * as i0 from "@angular/core";
/** Injection token that determines the scroll handling while the calendar is open. */
export declare const KBQ_DATEPICKER_SCROLL_STRATEGY: InjectionToken<() => ScrollStrategy>;
/** @docs-private */
export declare function KBQ_DATEPICKER_SCROLL_STRATEGY_FACTORY(overlay: Overlay): () => ScrollStrategy;
/** @docs-private */
export declare const KBQ_DATEPICKER_SCROLL_STRATEGY_FACTORY_PROVIDER: {
    provide: InjectionToken<() => ScrollStrategy>;
    deps: (typeof Overlay)[];
    useFactory: typeof KBQ_DATEPICKER_SCROLL_STRATEGY_FACTORY;
};
/**
 * Component used as the content for the datepicker dialog and popup. We use this instead of using
 * KbqCalendar directly as the content so we can control the initial focus. This also gives us a
 * place to put additional features of the popup that are not part of the calendar itself in the
 * future. (e.g. confirmation buttons).
 * @docs-private
 */
export declare class KbqDatepickerContent<D> implements OnDestroy, AfterViewInit {
    private changeDetectorRef;
    /** Emits when an animation has finished. */
    readonly animationDone: Subject<void>;
    /** Reference to the datepicker that created the overlay. */
    datepicker: KbqDatepicker<D>;
    /** Current state of the animation. */
    animationState: 'enter' | 'void';
    /** Reference to the internal calendar component. */
    calendar: KbqCalendar<D>;
    private subscriptions;
    constructor(changeDetectorRef: ChangeDetectorRef);
    ngAfterViewInit(): void;
    ngOnDestroy(): void;
    startExitAnimation(): void;
    static ɵfac: i0.ɵɵFactoryDeclaration<KbqDatepickerContent<any>, never>;
    static ɵcmp: i0.ɵɵComponentDeclaration<KbqDatepickerContent<any>, "kbq-datepicker__content", ["kbqDatepickerContent"], {}, {}, never, never, true, never>;
}
/** Component responsible for managing the datepicker popup/dialog. */
export declare class KbqDatepicker<D> implements OnDestroy {
    private overlay;
    private ngZone;
    private viewContainerRef;
    private readonly dateAdapter;
    private dir;
    protected readonly document: Document;
    get hasBackdrop(): boolean;
    set hasBackdrop(value: boolean);
    private _hasBackdrop;
    /** The date to open the calendar to initially. */
    get startAt(): D | null;
    set startAt(value: D | null);
    private _startAt;
    /** Whether the datepicker pop-up should be disabled. */
    get disabled(): boolean;
    set disabled(value: boolean);
    private _disabled;
    /** Whether the calendar is open. */
    get opened(): boolean;
    set opened(value: boolean);
    private _opened;
    /** The currently selected date. */
    get selected(): D | null;
    set selected(value: D | null);
    get dateFilter(): (date: D | null) => boolean;
    get value(): D | null;
    /** The minimum selectable date. */
    minDate: D | null;
    /** The maximum selectable date. */
    maxDate: D | null;
    /**
     * Emits selected year in multiyear view.
     * This doesn't imply a change on the selected date.
     */
    readonly yearSelected: EventEmitter<D>;
    /**
     * Emits selected month in year view.
     * This doesn't imply a change on the selected date.
     */
    readonly monthSelected: EventEmitter<D>;
    /** Classes to be passed to the date picker panel. Supports the same syntax as `ngClass`. */
    panelClass: string | string[];
    /** Function that can be used to add custom CSS classes to dates. */
    dateClass: (date: D) => KbqCalendarCellCssClasses;
    backdropClass: string;
    /** Emits when the datepicker has been opened. */
    readonly openedStream: EventEmitter<void>;
    /** Emits when the datepicker has been closed. */
    readonly closedStream: EventEmitter<void>;
    readonly stateChanges: Subject<void>;
    /** Emits when the datepicker is disabled. */
    readonly disabledChange: Subject<boolean>;
    /** Emits new selected date when selected date changes. */
    readonly selectedChanged: Subject<D>;
    /** The id for the datepicker calendar. */
    id: string;
    /** A reference to the overlay when the calendar is opened as a popup. */
    popupRef: OverlayRef | null;
    /** The input element this datepicker is associated with. */
    datepickerInput: KbqDatepickerInput<D>;
    private scrollStrategy;
    private validSelected;
    /** A portal containing the calendar for this datepicker. */
    private calendarPortal;
    /** Reference to the component instantiated in popup mode. */
    private popupComponentRef;
    /** The element that was focused before the datepicker was opened. */
    private focusedElementBeforeOpen;
    /** Subscription to value changes in the associated input element. */
    private inputSubscription;
    private closeSubscription;
    constructor(overlay: Overlay, ngZone: NgZone, viewContainerRef: ViewContainerRef, scrollStrategy: any, dateAdapter: DateAdapter<D>, dir: Directionality);
    ngOnDestroy(): void;
    /** Selects the given date */
    select(date: D): void;
    /** Emits the selected year in multiyear view */
    selectYear(normalizedYear: D): void;
    /** Emits selected month in year view */
    selectMonth(normalizedMonth: D): void;
    /**
     * Register an input with this datepicker.
     * @param input The datepicker input to register with this datepicker.
     */
    registerInput(input: KbqDatepickerInput<D>): void;
    /** Open the calendar. */
    open(): void;
    /** Close the calendar. */
    close(restoreFocus?: boolean): void;
    toggle(): void;
    /** Destroys the current overlay. */
    private destroyOverlay;
    /** Open the calendar as a popup. */
    private openAsPopup;
    /** Create the popup. */
    private createPopup;
    private restoreFocus;
    private closingActions;
    /** Create the popup PositionStrategy. */
    private createPopupPositionStrategy;
    static ɵfac: i0.ɵɵFactoryDeclaration<KbqDatepicker<any>, [null, null, null, null, { optional: true; }, { optional: true; }]>;
    static ɵcmp: i0.ɵɵComponentDeclaration<KbqDatepicker<any>, "kbq-datepicker", ["kbqDatepicker"], { "hasBackdrop": { "alias": "hasBackdrop"; "required": false; }; "startAt": { "alias": "startAt"; "required": false; }; "disabled": { "alias": "disabled"; "required": false; }; "opened": { "alias": "opened"; "required": false; }; "minDate": { "alias": "minDate"; "required": false; }; "maxDate": { "alias": "maxDate"; "required": false; }; "panelClass": { "alias": "panelClass"; "required": false; }; "dateClass": { "alias": "dateClass"; "required": false; }; "backdropClass": { "alias": "backdropClass"; "required": false; }; }, { "yearSelected": "yearSelected"; "monthSelected": "monthSelected"; "openedStream": "opened"; "closedStream": "closed"; }, never, never, true, never>;
}