import { AfterContentInit, DoCheck, ElementRef, OnInit } from "@angular/core";
import { DateRange, RealsoftDateSelectionModelChange } from "./models";
import { RealsoftDatepickerInputBase } from "./datepicker-input";
import { ErrorStateMatcher } from "../error-state-matcher";
import { FormGroupDirective, NgControl, NgForm, ValidatorFn } from "@angular/forms";
import { Directionality } from "@angular/cdk/bidi";
import { RealsoftDateRangeInput } from "./datepicker-range-input";
import * as i0 from "@angular/core";
export declare abstract class RealsoftDateRangeInputPartBase<D> extends RealsoftDatepickerInputBase<DateRange<D>> implements OnInit, AfterContentInit, DoCheck {
    _rangeInput: RealsoftDateRangeInput<D>;
    _elementRef: ElementRef<HTMLInputElement>;
    _defaultErrorStateMatcher: ErrorStateMatcher;
    private _injector;
    _parentForm: NgForm;
    _parentFormGroup: FormGroupDirective;
    ngControl: NgControl;
    protected abstract validator: ValidatorFn | null;
    protected abstract assignValueToModel(value: D | null): void;
    protected abstract getValueFromModel(modelValue: DateRange<D>): D | null;
    protected abstract _register(): void;
    protected readonly _dir: Directionality;
    private _errorStateTracker;
    get errorStateMatcher(): ErrorStateMatcher;
    set errorStateMatcher(value: ErrorStateMatcher);
    get errorState(): boolean;
    set errorState(value: boolean);
    constructor(...args: unknown[]);
    ngOnInit(): void;
    ngAfterContentInit(): void;
    ngDoCheck(): void;
    isEmpty(): boolean;
    _getPlaceholder(): string;
    focus(): void;
    getMirrorValue(): string;
    updateErrorState(): void;
    onInput(event: Event): void;
    protected openPopup(): void;
    getMinDate(): D;
    getMaxDate(): D;
    protected getDateFilter(): import("./models").DateFilterFn<D>;
    protected parentDisabled(): boolean;
    protected shouldHandleChangeEvent({ source }: RealsoftDateSelectionModelChange<DateRange<D>>): boolean;
    protected assignValueProgrammatically(value: D | null): void;
    protected formatValue(value: D | null): void;
    static ɵfac: i0.ɵɵFactoryDeclaration<RealsoftDateRangeInputPartBase<any>, never>;
    static ɵdir: i0.ɵɵDirectiveDeclaration<RealsoftDateRangeInputPartBase<any>, never, never, { "errorStateMatcher": { "alias": "errorStateMatcher"; "required": false; }; }, {}, never, never, true, never>;
}