import { FocusMonitor } from '@angular/cdk/a11y';
import { DoCheck, ElementRef, OnDestroy, OnInit } from '@angular/core';
import { ControlValueAccessor, FormBuilder, FormControl, FormGroup, FormGroupDirective, NgControl, NgForm, ValidatorFn } from '@angular/forms';
import { CanUpdateErrorState, CanUpdateErrorStateCtor, ErrorStateMatcher } from '@angular/material/core';
import { MatFormFieldControl } from '@angular/material/form-field';
import { KnoraDate, KnoraPeriod } from '@dasch-swiss/dsp-js';
import { GregorianCalendarDate, JulianCalendarDate } from 'jdnconvertiblecalendar';
import { Subject } from 'rxjs';
import { CalendarHeaderComponent } from '../calendar-header/calendar-header.component';
/** Error when invalid control is dirty, touched, or submitted. */
export declare class DateInputErrorStateMatcher implements ErrorStateMatcher {
    isErrorState(control: FormControl | null, form: FormGroupDirective | NgForm | null): boolean;
}
/** If a period is defined, start and end date must have the same calendar */
export declare function sameCalendarValidator(isPeriod: FormControl, endDate: FormControl): ValidatorFn;
/** If a period is defined, start date must be before end date */
export declare function periodStartEndValidator(isPeriod: FormControl, endDate: FormControl): ValidatorFn;
declare class MatInputBase {
    _defaultErrorStateMatcher: ErrorStateMatcher;
    _parentForm: NgForm;
    _parentFormGroup: FormGroupDirective;
    ngControl: NgControl;
    constructor(_defaultErrorStateMatcher: ErrorStateMatcher, _parentForm: NgForm, _parentFormGroup: FormGroupDirective, ngControl: NgControl);
}
declare const _MatInputMixinBase: CanUpdateErrorStateCtor & typeof MatInputBase;
export declare class DateInputComponent extends _MatInputMixinBase implements ControlValueAccessor, MatFormFieldControl<KnoraDate | KnoraPeriod>, DoCheck, CanUpdateErrorState, OnDestroy, OnInit {
    ngControl: NgControl;
    private _fm;
    private _elRef;
    static nextId: number;
    form: FormGroup;
    stateChanges: Subject<void>;
    id: string;
    focused: boolean;
    errorState: boolean;
    controlType: string;
    matcher: DateInputErrorStateMatcher;
    calendarHeaderComponent: typeof CalendarHeaderComponent;
    startDateControl: FormControl;
    endDateControl: FormControl;
    isPeriodControl: FormControl;
    valueRequiredValidator: boolean;
    onChange: (_: any) => void;
    onTouched: () => void;
    get empty(): boolean;
    get shouldLabelFloat(): boolean;
    get required(): boolean;
    set required(req: boolean);
    private _required;
    get disabled(): boolean;
    set disabled(value: boolean);
    private _disabled;
    get placeholder(): string;
    set placeholder(plh: string);
    private _placeholder;
    describedBy: string;
    setDescribedByIds(ids: string[]): void;
    get value(): KnoraDate | KnoraPeriod | null;
    set value(date: KnoraDate | KnoraPeriod | null);
    /**
     * Given a `KnoraDate`, creates a Gregorian or Julian calendar date.
     *
     * @param date the given KnoraDate.
     */
    createCalendarDate(date: KnoraDate): GregorianCalendarDate | JulianCalendarDate;
    errorStateMatcher: ErrorStateMatcher;
    constructor(fb: FormBuilder, ngControl: NgControl, _fm: FocusMonitor, _elRef: ElementRef<HTMLElement>, _parentForm: NgForm, _parentFormGroup: FormGroupDirective, _defaultErrorStateMatcher: ErrorStateMatcher);
    ngOnInit(): void;
    ngDoCheck(): void;
    ngOnDestroy(): void;
    onContainerClick(event: MouseEvent): void;
    writeValue(date: KnoraDate | KnoraPeriod | null): void;
    registerOnChange(fn: any): void;
    registerOnTouched(fn: any): void;
    setDisabledState(isDisabled: boolean): void;
    _handleInput(): void;
}
export {};