import { AnimationEvent } from '@angular/animations';
import { AfterContentInit, EventEmitter, OnDestroy } from '@angular/core';
import { IfExpandService } from '../../utils/conditional/if-expanded.service';
import { ClrCommonStringsService } from '../../utils/i18n/common-strings.service';
import { VerticalNavGroupRegistrationService } from './providers/vertical-nav-group-registration.service';
import { VerticalNavGroupService } from './providers/vertical-nav-group.service';
import { VerticalNavService } from './providers/vertical-nav.service';
import * as i0 from "@angular/core";
export declare class ClrVerticalNavGroup implements AfterContentInit, OnDestroy {
    private _itemExpand;
    private _navGroupRegistrationService;
    private _navService;
    commonStrings: ClrCommonStringsService;
    expandedChange: EventEmitter<boolean>;
    private wasExpanded;
    private _subscriptions;
    private _expandAnimationState;
    constructor(_itemExpand: IfExpandService, _navGroupRegistrationService: VerticalNavGroupRegistrationService, navGroupService: VerticalNavGroupService, _navService: VerticalNavService, commonStrings: ClrCommonStringsService);
    get expanded(): boolean;
    set expanded(value: boolean);
    set userExpandedInput(value: boolean | string);
    get expandAnimationState(): string;
    set expandAnimationState(value: string);
    ngAfterContentInit(): void;
    ngOnDestroy(): void;
    expandGroup(): void;
    collapseGroup(): void;
    expandAnimationDone($event: AnimationEvent): void;
    toggleExpand(): void;
    static ɵfac: i0.ɵɵFactoryDeclaration<ClrVerticalNavGroup, never>;
    static ɵcmp: i0.ɵɵComponentDeclaration<ClrVerticalNavGroup, "clr-vertical-nav-group", never, { "userExpandedInput": "clrVerticalNavGroupExpanded"; }, { "expandedChange": "clrVerticalNavGroupExpandedChange"; }, never, ["[clrVerticalNavLink]", "[clrVerticalNavIcon]", "*", "[clrIfExpanded], clr-vertical-nav-group-children"], false, never>;
}