import { EventEmitter, ElementRef, ChangeDetectorRef } from '@angular/core';
import { Subject } from 'rxjs';
import { NavTreeSearchBarConfig } from '../../../../interface/nav-panel';
/**
 * 导航树上方的搜索栏
 * @remarks 可以配置是否显示“全部展开/收起”按钮
 */
export declare class NavTreeSearchBarComponent {
    private cd;
    /** 输入框内容变更 */
    textChange: Subject<{}>;
    /** 搜索栏自定义配置 */
    config?: NavTreeSearchBarConfig;
    menuClick: EventEmitter<{}>;
    toolbarEl: ElementRef<any>;
    searchInputEl: ElementRef<any>;
    isExpanded: boolean;
    localeData: any;
    constructor(cd: ChangeDetectorRef);
    /** 搜索框占位文本 */
    readonly placeholder: string;
    /** 是否显示“全部收起/展开”按钮 */
    readonly showToggleButton: boolean;
    /** 清空输入框 */
    clear(): void;
    onTextChange($event: any): void;
    clearInput($event: MouseEvent, searchInput: any): void;
    onMenuItemClick($event: any, key: string): void;
    toggleNodes($event: any): void;
    /** 焦点输入框 */
    focus(): void;
}