/**
 * Use of this source code is governed by an MIT-style license that can be
 * found in the LICENSE file at https://github.com/NG-ZORRO/ng-zorro-antd/blob/master/LICENSE
 */
import { Direction, Directionality } from '@angular/cdk/bidi';
import { CdkConnectedOverlay, ConnectionPositionPair } from '@angular/cdk/overlay';
import { ChangeDetectorRef, ElementRef, EventEmitter, OnDestroy, OnInit, QueryList, Renderer2, TemplateRef } from '@angular/core';
import { ControlValueAccessor } from '@angular/forms';
import { VtsConfigKey, VtsConfigService } from '@ui-vts-kit/ng-vts/core/config';
import { VtsNoAnimationDirective } from '@ui-vts-kit/ng-vts/core/no-animation';
import { BooleanInput, NgClassType, NgStyleInterface, VtsSafeAny } from '@ui-vts-kit/ng-vts/core/types';
import { VtsCascaderI18nInterface, VtsI18nService } from '@ui-vts-kit/ng-vts/i18n';
import { VtsCascaderOptionComponent } from './cascader-li.component';
import { VtsCascaderService } from './cascader.service';
import { VtsCascaderComponentAsSource, VtsCascaderExpandTrigger, VtsCascaderOption, VtsCascaderSize, VtsCascaderTriggerType, VtsShowSearchOptions } from './typings';
import * as i0 from "@angular/core";
export declare class VtsCascaderComponent implements VtsCascaderComponentAsSource, OnInit, OnDestroy, ControlValueAccessor {
    cascaderService: VtsCascaderService;
    vtsConfigService: VtsConfigService;
    private cdr;
    private i18nService;
    private directionality;
    noAnimation?: VtsNoAnimationDirective;
    readonly _vtsModuleName: VtsConfigKey;
    static ngAcceptInputType_vtsShowInput: BooleanInput;
    static ngAcceptInputType_vtsShowArrow: BooleanInput;
    static ngAcceptInputType_vtsAllowClear: BooleanInput;
    static ngAcceptInputType_vtsAutoFocus: BooleanInput;
    static ngAcceptInputType_vtsChangeOnSelect: BooleanInput;
    static ngAcceptInputType_vtsDisabled: BooleanInput;
    input: ElementRef;
    menu: ElementRef;
    overlay: CdkConnectedOverlay;
    cascaderItems: QueryList<VtsCascaderOptionComponent>;
    vtsOptionRender: TemplateRef<{
        $implicit: VtsCascaderOption;
        index: number;
    }> | null;
    vtsShowInput: boolean;
    vtsShowArrow: boolean;
    vtsAllowClear: boolean;
    vtsAutoFocus: boolean;
    vtsChangeOnSelect: boolean;
    vtsDisabled: boolean;
    vtsColumnClassName?: string;
    vtsExpandTrigger: VtsCascaderExpandTrigger;
    vtsValueProperty: string;
    vtsLabelRender: TemplateRef<any> | null;
    vtsLabelProperty: string;
    vtsNoResult?: string | TemplateRef<void>;
    vtsSize: VtsCascaderSize;
    vtsBackdrop: boolean;
    vtsShowSearch: boolean | VtsShowSearchOptions;
    vtsPlaceHolder: string;
    vtsMenuClassName?: string;
    vtsMenuStyle: NgStyleInterface | null;
    vtsMouseEnterDelay: number;
    vtsMouseLeaveDelay: number;
    vtsTriggerAction: VtsCascaderTriggerType | VtsCascaderTriggerType[];
    vtsChangeOn?: (option: VtsCascaderOption, level: number) => boolean;
    vtsLoadData?: (node: VtsCascaderOption, index: number) => PromiseLike<VtsSafeAny>;
    vtsSuffixIcon: string | TemplateRef<void>;
    vtsExpandIcon: string | TemplateRef<void>;
    get vtsOptions(): VtsCascaderOption[] | null;
    set vtsOptions(options: VtsCascaderOption[] | null);
    readonly vtsVisibleChange: EventEmitter<boolean>;
    readonly vtsSelectionChange: EventEmitter<VtsCascaderOption[]>;
    readonly vtsSelect: EventEmitter<{
        option: VtsCascaderOption;
        index: number;
    }>;
    readonly vtsClear: EventEmitter<void>;
    /**
     * If the dropdown should show the empty content.
     * `true` if there's no options.
     */
    shouldShowEmpty: boolean;
    el: HTMLElement;
    menuVisible: boolean;
    isLoading: boolean;
    labelRenderText?: string;
    labelRenderContext: {};
    onChange: Function;
    onTouched: Function;
    positions: ConnectionPositionPair[];
    /**
     * Dropdown's with in pixel.
     */
    dropdownWidthStyle?: string;
    dropdownHeightStyle: 'auto' | '';
    isFocused: boolean;
    locale: VtsCascaderI18nInterface;
    dir: Direction;
    private destroy$;
    private inputString;
    private isOpening;
    private delayMenuTimer;
    private delaySelectTimer;
    get inSearchingMode(): boolean;
    set inputValue(inputValue: string);
    get inputValue(): string;
    get menuCls(): NgClassType;
    get menuColumnCls(): NgClassType;
    private get hasInput();
    private get hasValue();
    get showPlaceholder(): boolean;
    get clearIconVisible(): boolean;
    get isLabelRenderTemplate(): boolean;
    constructor(cascaderService: VtsCascaderService, vtsConfigService: VtsConfigService, cdr: ChangeDetectorRef, i18nService: VtsI18nService, elementRef: ElementRef, renderer: Renderer2, directionality: Directionality, noAnimation?: VtsNoAnimationDirective);
    ngOnInit(): void;
    ngOnDestroy(): void;
    registerOnChange(fn: () => {}): void;
    registerOnTouched(fn: () => {}): void;
    writeValue(value: VtsSafeAny): void;
    delaySetMenuVisible(visible: boolean, delay?: number, setOpening?: boolean): void;
    setMenuVisible(visible: boolean): void;
    private clearDelayMenuTimer;
    clearSelection(event?: Event): void;
    getSubmitValue(): VtsSafeAny[];
    focus(): void;
    blur(): void;
    handleInputBlur(): void;
    handleInputFocus(): void;
    onKeyDown(event: KeyboardEvent): void;
    onTriggerClick(): void;
    onTriggerMouseEnter(): void;
    onTriggerMouseLeave(event: MouseEvent): void;
    onOptionMouseEnter(option: VtsCascaderOption, columnIndex: number, event: Event): void;
    onOptionMouseLeave(option: VtsCascaderOption, _columnIndex: number, event: Event): void;
    onOptionClick(option: VtsCascaderOption, columnIndex: number, event: Event): void;
    onClickOutside(event: MouseEvent): void;
    private isActionTrigger;
    private onEnter;
    private moveUpOrDown;
    private moveLeft;
    private moveRight;
    private clearDelaySelectTimer;
    private delaySetOptionActivated;
    private toggleSearchingMode;
    isOptionActivated(option: VtsCascaderOption, index: number): boolean;
    setDisabledState(isDisabled: boolean): void;
    closeMenu(): void;
    /**
     * Reposition the cascader panel. When a menu opens, the cascader expands
     * and may exceed the boundary of browser's window.
     */
    private reposition;
    /**
     * When a cascader options is changed, a child needs to know that it should re-render.
     */
    private checkChildren;
    private setDisplayLabel;
    private setDropdownStyles;
    private setLocale;
    private scrollToActivatedOptions;
    static ɵfac: i0.ɵɵFactoryDeclaration<VtsCascaderComponent, [null, null, null, null, null, null, { optional: true; }, { optional: true; host: true; }]>;
    static ɵcmp: i0.ɵɵComponentDeclaration<VtsCascaderComponent, "vts-cascader, [vts-cascader]", ["vtsCascader"], { "vtsOptionRender": { "alias": "vtsOptionRender"; "required": false; }; "vtsShowInput": { "alias": "vtsShowInput"; "required": false; }; "vtsShowArrow": { "alias": "vtsShowArrow"; "required": false; }; "vtsAllowClear": { "alias": "vtsAllowClear"; "required": false; }; "vtsAutoFocus": { "alias": "vtsAutoFocus"; "required": false; }; "vtsChangeOnSelect": { "alias": "vtsChangeOnSelect"; "required": false; }; "vtsDisabled": { "alias": "vtsDisabled"; "required": false; }; "vtsColumnClassName": { "alias": "vtsColumnClassName"; "required": false; }; "vtsExpandTrigger": { "alias": "vtsExpandTrigger"; "required": false; }; "vtsValueProperty": { "alias": "vtsValueProperty"; "required": false; }; "vtsLabelRender": { "alias": "vtsLabelRender"; "required": false; }; "vtsLabelProperty": { "alias": "vtsLabelProperty"; "required": false; }; "vtsNoResult": { "alias": "vtsNoResult"; "required": false; }; "vtsSize": { "alias": "vtsSize"; "required": false; }; "vtsBackdrop": { "alias": "vtsBackdrop"; "required": false; }; "vtsShowSearch": { "alias": "vtsShowSearch"; "required": false; }; "vtsPlaceHolder": { "alias": "vtsPlaceHolder"; "required": false; }; "vtsMenuClassName": { "alias": "vtsMenuClassName"; "required": false; }; "vtsMenuStyle": { "alias": "vtsMenuStyle"; "required": false; }; "vtsMouseEnterDelay": { "alias": "vtsMouseEnterDelay"; "required": false; }; "vtsMouseLeaveDelay": { "alias": "vtsMouseLeaveDelay"; "required": false; }; "vtsTriggerAction": { "alias": "vtsTriggerAction"; "required": false; }; "vtsChangeOn": { "alias": "vtsChangeOn"; "required": false; }; "vtsLoadData": { "alias": "vtsLoadData"; "required": false; }; "vtsSuffixIcon": { "alias": "vtsSuffixIcon"; "required": false; }; "vtsExpandIcon": { "alias": "vtsExpandIcon"; "required": false; }; "vtsOptions": { "alias": "vtsOptions"; "required": false; }; }, { "vtsVisibleChange": "vtsVisibleChange"; "vtsSelectionChange": "vtsSelectionChange"; "vtsSelect": "vtsSelect"; "vtsClear": "vtsClear"; }, never, ["*"], false, never>;
}