/**
 * 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 { ChangeDetectorRef, EventEmitter, OnDestroy, OnInit, TemplateRef } from '@angular/core';
import { NzMenuModeType } from './menu.types';
export declare class NzSubMenuTitleComponent implements OnDestroy, OnInit {
    private cdr;
    private directionality;
    nzIcon: string | null;
    nzTitle: string | TemplateRef<void> | null;
    isMenuInsideDropDown: boolean;
    nzDisabled: boolean;
    paddingLeft: number | null;
    mode: NzMenuModeType;
    readonly toggleSubMenu: EventEmitter<any>;
    readonly subMenuMouseState: EventEmitter<boolean>;
    dir: Direction;
    private destroy$;
    constructor(cdr: ChangeDetectorRef, directionality: Directionality);
    ngOnInit(): void;
    ngOnDestroy(): void;
    setMouseState(state: boolean): void;
    clickTitle(): void;
}