import { AfterContentInit, ElementRef, EventEmitter, OnInit, QueryList, TemplateRef } from '@angular/core';
import { ControlValueAccessor, NgControl } from '@angular/forms';
import { DropdownMenuItem, DropdownMenuItemWrapper } from './DropdownMenuItem';
import { DropdownLoadEvent } from './DropdownLoadEvent';
import { TemplateDirective } from 'verben-ng-ui/src/lib/components/shared';
import { DropdownChangeEvent } from './DropdownChangeEvent';
import { Subject } from 'rxjs';
import * as i0 from "@angular/core";
export declare class DropDownComponent implements ControlValueAccessor, OnInit, AfterContentInit {
    private ngControl;
    private _options;
    private ignoreSet;
    set options(value: any[]);
    get options(): any[];
    width: string;
    overlayWidth: number | null;
    showHorizontalLine: boolean;
    horizontalLineColor: string;
    optionLabel?: string;
    optionSubLabel?: string;
    optionValue?: string;
    placeholder?: string;
    invalidMessage?: string;
    errorPosition: string;
    loadMoreCaption: string;
    display: 'default' | 'chip';
    showClear: boolean;
    lazyLoad: boolean;
    selectKey: string | null;
    styleClass: string;
    group: boolean;
    multiselect: boolean;
    filter: boolean;
    avoidDuplication: boolean;
    filterBy?: string;
    debounceTime: number;
    minChar: number;
    disabled: boolean;
    required: boolean;
    load?: (context: DropdownLoadEvent) => Promise<any[]>;
    asyncLabel?: (context: any) => Promise<string | null>;
    search?: (data: any, context: DropdownLoadEvent) => Promise<any[]>;
    optionsChange: EventEmitter<any[]>;
    onChange: EventEmitter<DropdownChangeEvent>;
    onClick: EventEmitter<Event>;
    onClear: EventEmitter<Event>;
    onItemChange: (value: any) => void;
    onTouched: () => void;
    isInvalid: boolean;
    firstSearch: boolean;
    dropdownContainer: ElementRef;
    dropdownExpansion: ElementRef;
    templates: QueryList<TemplateDirective>;
    isFocused: boolean;
    isInputFocused: boolean;
    selectedItemTemplate: TemplateRef<any> | null;
    itemTemplate: TemplateRef<any> | null;
    groupTemplate: TemplateRef<any> | null;
    isExpanded: boolean;
    loadTimes: DropdownLoadEvent;
    initialIncrement: boolean;
    selectedOption: any;
    selectedOptions: any[];
    selectedOptionLabel: any;
    selectedOptionLabels: any[];
    isLoading: boolean;
    optionsCopy: any[];
    loadTimesCopy: DropdownLoadEvent;
    selectedContexts: any[];
    searchHistory: string[];
    searchTerm$: Subject<string>;
    searchContext: string;
    allowSelectAll: boolean;
    selectedAll: boolean;
    constructor(ngControl: NgControl);
    ngOnInit(): void;
    ngAfterContentInit(): void;
    onFocus(): void;
    onBlur(): void;
    onSearchFocus(): void;
    onSearchBlur(): void;
    onInputFocus(): void;
    onInputBlur(): void;
    updateOptionsCopy(): void;
    onSearch(event: any): void;
    onDropdownClick(event: Event): void;
    toggleDropdown(): void;
    hasSibling(siblings: DropdownMenuItemWrapper[]): number | null;
    expandMenu(item: DropdownMenuItemWrapper, siblings: DropdownMenuItemWrapper[]): Promise<void>;
    loadMoreMenuItems(item: DropdownMenuItemWrapper): Promise<void>;
    loadMore(): Promise<void>;
    convertToExpandable(items: DropdownMenuItem[]): DropdownMenuItemWrapper[];
    onSelectAll(event: Event): void;
    clearSelection(event: Event): void;
    onSelect(value: any, event: Event): void;
    onMultiselectItemClosed(index: number, event: Event): void;
    checkMultiselectValue(value: any): number | null;
    writeValue(obj: any): Promise<void>;
    getOptionFromValue(value: any): any;
    registerOnChange(fn: any): void;
    registerOnTouched(fn: any): void;
    setDisabledState?(isDisabled: boolean): void;
    getValue(item: any): any;
    getOptionLabel(item: any): any;
    private isDropdownMenuItemWrapperArray;
    private isDropdownMenuItemWrapper;
    onClickOutside(event: Event): void;
    static ɵfac: i0.ɵɵFactoryDeclaration<DropDownComponent, [{ optional: true; self: true; }]>;
    static ɵcmp: i0.ɵɵComponentDeclaration<DropDownComponent, "verben-drop-down", never, { "options": { "alias": "options"; "required": false; }; "width": { "alias": "width"; "required": false; }; "overlayWidth": { "alias": "overlayWidth"; "required": false; }; "showHorizontalLine": { "alias": "showHorizontalLine"; "required": false; }; "horizontalLineColor": { "alias": "horizontalLineColor"; "required": false; }; "optionLabel": { "alias": "optionLabel"; "required": false; }; "optionSubLabel": { "alias": "optionSubLabel"; "required": false; }; "optionValue": { "alias": "optionValue"; "required": false; }; "placeholder": { "alias": "placeholder"; "required": false; }; "invalidMessage": { "alias": "invalidMessage"; "required": false; }; "errorPosition": { "alias": "errorPosition"; "required": false; }; "loadMoreCaption": { "alias": "loadMoreCaption"; "required": false; }; "display": { "alias": "display"; "required": false; }; "showClear": { "alias": "showClear"; "required": false; }; "lazyLoad": { "alias": "lazyLoad"; "required": false; }; "selectKey": { "alias": "selectKey"; "required": false; }; "styleClass": { "alias": "styleClass"; "required": false; }; "group": { "alias": "group"; "required": false; }; "multiselect": { "alias": "multiselect"; "required": false; }; "filter": { "alias": "filter"; "required": false; }; "avoidDuplication": { "alias": "avoidDuplication"; "required": false; }; "filterBy": { "alias": "filterBy"; "required": false; }; "debounceTime": { "alias": "debounceTime"; "required": false; }; "minChar": { "alias": "minChar"; "required": false; }; "disabled": { "alias": "disabled"; "required": false; }; "required": { "alias": "required"; "required": false; }; "load": { "alias": "load"; "required": false; }; "asyncLabel": { "alias": "asyncLabel"; "required": false; }; "search": { "alias": "search"; "required": false; }; }, { "optionsChange": "optionsChange"; "onChange": "onChange"; "onClick": "onClick"; "onClear": "onClear"; }, ["templates"], never, true, never>;
}