import { DoCheck, ElementRef, InjectionToken, Injector, OnInit } from '@angular/core';
import { FormGroupDirective, NgControl, NgForm, ValidatorFn } from '@angular/forms';
import { CanUpdateErrorStateCtor, ErrorStateMatcher } from '@ngx-simple/core/common-behaviors';
import { SimDateAdapter } from '@ngx-simple/core/datetime';
import { DateRange, DateSelectionModelChange, SimDateSelectionModel } from './date-selection-model';
import { SimDatepickerInputBase } from './datepicker-input-base';
/** 可用于过滤日历中日期的功能 */
export declare type DateFilterFn<D> = (date: D | null) => boolean;
/** 用于包裹`simStartDate`和`simEndDate`的父组件。 */
export interface DateRangeInputParent<D> {
    id: string;
    format: string;
    picker: string;
    min: D | null;
    max: D | null;
    focusedInput: DateRangeInputPartBase<D>;
    dateFilter: DateFilterFn<D>;
    _startInput: DateRangeInputPartBase<D>;
    _endInput: DateRangeInputPartBase<D>;
    _groupDisabled: boolean;
    _handleChildValueChange: () => void;
    _openDatePicker: () => void;
}
/** 用于为`simStartDate`和`simEndDate`提供sim-date-range-input组件，没有循环依赖性。 */
export declare const SIM_DATE_RANGE_INPUT_PARENT: InjectionToken<DateRangeInputParent<unknown>>;
/** 可以在sim-date-range-input内部投影的各个`simStartDate`和`simEndDate`的基类 */
declare abstract class DateRangeInputPartBase<D> extends SimDatepickerInputBase<DateRange<D>> implements OnInit, DoCheck {
    _rangeInput: DateRangeInputParent<D>;
    private _injector;
    _defaultErrorStateMatcher: ErrorStateMatcher;
    parentForm: NgForm;
    parentFormGroup: FormGroupDirective;
    ngControl: NgControl;
    protected abstract _validator: ValidatorFn | null;
    format: string;
    picker: string;
    constructor(_rangeInput: DateRangeInputParent<D>, elementRef: ElementRef<HTMLInputElement>, _injector: Injector, _defaultErrorStateMatcher: ErrorStateMatcher, dateAdapter: SimDateAdapter<D>, parentForm: NgForm, parentFormGroup: FormGroupDirective);
    abstract updateErrorState(): void;
    ngOnInit(): void;
    ngDoCheck(): void;
    /** 获取输入是否为空 */
    isEmpty(): boolean;
    /** 聚焦输入框 */
    focus(): void;
    /** 处理输入上的focus事件 */
    _onFocus(): void;
    _registerModel(model: SimDateSelectionModel<DateRange<D>, D>): void;
    _removeValue(): void;
    /** 从date-range-input获取最小日期 */
    _getMinDate(): D;
    /** 从date-range-input获取最大日期 */
    _getMaxDate(): D;
    /** 从date-range-input获取过滤方法 */
    _getDateFilter(): DateFilterFn<D>;
    protected abstract _assignValueToModel(value: D | null): void;
    protected abstract _getValueFromModel(modelValue: DateRange<D>): D | null;
    protected _openPopup(): void;
    protected _outsideValueChanged: () => void;
}
declare const _DateRangeInputBase: CanUpdateErrorStateCtor & typeof DateRangeInputPartBase;
export declare class SimStartDateDirective<D> extends _DateRangeInputBase<D> {
    protected _validator: ValidatorFn | null;
    constructor(_rangeInput: DateRangeInputParent<D>, elementRef: ElementRef, injector: Injector, defaultErrorStateMatcher: ErrorStateMatcher, dateAdapter: SimDateAdapter<D>, parentForm: NgForm, parentFormGroup: FormGroupDirective);
    protected _getValueFromModel(modelValue: DateRange<D>): D;
    protected _assignValueToModel(value: D | null): void;
    protected _formatValue(value: D | null): void;
    protected _canEmitChangeEvent: (event: DateSelectionModelChange<DateRange<D>>) => boolean;
    private _startValidator;
}
export declare class SimEndDateDirective<D> extends _DateRangeInputBase<D> {
    protected _validator: ValidatorFn | null;
    constructor(_rangeInput: DateRangeInputParent<D>, elementRef: ElementRef, injector: Injector, defaultErrorStateMatcher: ErrorStateMatcher, dateAdapter: SimDateAdapter<D>, parentForm: NgForm, parentFormGroup: FormGroupDirective);
    protected _getValueFromModel(modelValue: DateRange<D>): D;
    protected _assignValueToModel(value: D | null): void;
    protected _canEmitChangeEvent: (event: DateSelectionModelChange<DateRange<D>>) => boolean;
    _onKeydown(event: KeyboardEvent): void;
    private _endValidator;
}
export {};