/**
 * @license
 * Copyright Akveo. All Rights Reserved.
 * Licensed under the MIT License. See License.txt in the project root for license information.
 */
import { InjectionToken } from '@angular/core';
import { Location } from '@angular/common';
import { Router } from '@angular/router';
import { Observable } from 'rxjs/Observable';
import { BehaviorSubject } from 'rxjs/BehaviorSubject';
import { List } from 'immutable';
import 'rxjs/add/operator/publish';
export declare abstract class NgaMenuItem {
    title: string;
    link?: string;
    url?: string;
    icon?: string;
    expanded?: boolean;
    children?: List<NgaMenuItem>;
    target?: string;
    hidden?: boolean;
    pathMath?: string;
    home?: boolean;
    group?: boolean;
    parent?: NgaMenuItem;
    selected?: boolean;
    data?: any;
}
export interface NgaMenuOptions {
    items?: List<NgaMenuItem>;
}
export declare const ngaMenuOptionsToken: InjectionToken<NgaMenuOptions>;
export declare class NgaMenuService {
    addItems(items: List<NgaMenuItem>, tag?: string): void;
    navigateHome(tag?: string): void;
    getSelectedItem(tag?: string): Observable<{
        tag: string;
        item: NgaMenuItem;
    }>;
    onItemClick(): Observable<{
        tag: string;
        item: NgaMenuItem;
    }>;
    onItemSelect(): Observable<{
        tag: string;
        item: NgaMenuItem;
    }>;
    onItemHover(): Observable<{
        tag: string;
        item: NgaMenuItem;
    }>;
    onSubmenuToggle(): Observable<{
        tag: string;
        item: NgaMenuItem;
    }>;
}
export declare class NgaMenuInternalService {
    private router;
    private location;
    private options;
    private stack;
    private items;
    constructor(router: Router, location: Location, options: any);
    getItems(): List<NgaMenuItem>;
    prepareItems(items: List<NgaMenuItem>): void;
    onAddItem(): Observable<{
        tag: string;
        items: List<NgaMenuItem>;
    }>;
    onNavigateHome(): Observable<{
        tag: string;
    }>;
    onGetSelectedItem(): Observable<{
        tag: string;
        listener: BehaviorSubject<{
            tag: string;
            item: NgaMenuItem;
        }>;
    }>;
    itemHover(item: NgaMenuItem, tag?: string): void;
    submenuToggle(item: NgaMenuItem, tag?: string): void;
    resetItems(items: List<NgaMenuItem>): void;
    itemSelect(item: NgaMenuItem, tag?: string): void;
    itemClick(item: NgaMenuItem, tag?: string): void;
    private resetItem(parent);
    private setParent(parent);
    private prepareItem(parent);
    private clearStack();
}