import { Overlay, ScrollDispatcher } from '@angular/cdk/overlay';
import { Location } from '@angular/common';
import { AfterViewInit, ElementRef, EventEmitter, OnChanges, OnDestroy, SimpleChanges, ViewContainerRef } from '@angular/core';
import { NgClassInterface, SafeAny } from '@ngx-simple/core/types';
import { SimDropdownComponent } from './dropdown.component';
import { DropdownPosition, triggerType } from './dropdown.typings';
export declare class SimDropdownDirective implements OnChanges, AfterViewInit, OnDestroy {
    private _overlay;
    private _elementRef;
    private _viewContainerRef;
    private _scrollDispatcher;
    private _location;
    set simDropdown(value: SimDropdownComponent);
    /** 允许用户定义dropdown相对于元素的位置 */
    get position(): DropdownPosition;
    set position(value: DropdownPosition);
    /** 禁用dropdown的显示 */
    disabled: boolean;
    trigger: triggerType;
    visible: boolean;
    /** 要传递给选择面板的类。支持"ngClass"相同的语法 */
    panelClass: NgClassInterface;
    visibleChange: EventEmitter<boolean>;
    private _overlayRef;
    private _dropdownInstance;
    private _position;
    private _portal;
    /** 当组件被销毁时发出 */
    private readonly _destroyed$;
    private _trigger$;
    private _inputVisible$;
    private _overlayClose$;
    private _locationSubscribe;
    constructor(_overlay: Overlay, _elementRef: ElementRef, _viewContainerRef: ViewContainerRef, _scrollDispatcher: ScrollDispatcher, _location: Location);
    ngOnChanges(changes: SimpleChanges): void;
    ngAfterViewInit(): void;
    ngOnDestroy(): void;
    /** 切换显示隐藏 */
    toggle(visible: boolean): void;
    /** 建立观察和订阅处理 */
    private _init;
    /** 创建覆盖配置和位置策略 */
    private _createOverlay;
    private _getOriginAndOverlayPosition;
    /** 反转叠加位置 */
    private _invertPosition;
    /** 为 sim-dropdown 设置属性并强制更新检查 */
    private _setDropdownComponentInput;
}
export declare class SimDropdownCloseDirective {
    private parentDropdown;
    value: SafeAny;
    disabled: boolean;
    readonly simDropdownClosedChange: EventEmitter<SafeAny>;
    constructor(parentDropdown: SimDropdownComponent);
    _handleClick(event: Event): void;
}