import { NgClass } from '@angular/common';
import { AfterContentInit, ApplicationRef, ElementRef, EventEmitter, OnDestroy, Renderer2 } from '@angular/core';
import { DokuTab } from './tab.component';
import * as i0 from "@angular/core";
export declare class DokuTabs implements AfterContentInit, OnDestroy {
    private elementRef;
    private renderer;
    private appRef;
    /**
     * Initial active id of the tab.
     * Default to first tab.
     */
    activeId: string;
    /**
     * Whether to use content card styles for the tab body.
     *
     * @default false
     */
    useContentCard: boolean;
    /**
     * Listen to active tab change.
     */
    activeTabChange: EventEmitter<DokuTab>;
    protected readonly classes: NgClass['ngClass'];
    private tabItems?;
    private tabsHeaderElement?;
    private tabsBodyElement?;
    private destroy$;
    /**
     * It used in tab component.
     */
    protected tabChangeForChild$: import("rxjs").Observable<DokuTab>;
    constructor(elementRef: ElementRef, renderer: Renderer2, appRef: ApplicationRef);
    ngAfterContentInit(): void;
    ngOnDestroy(): void;
    /**
     * Change the active tab.
     * @param id Tab id.
     */
    changeActiveTab(id: string): void;
    private updateActiveId;
    private notifyTabChange;
    private getTabById;
    private isValidActiveId;
    /**
     * Update tab elements when adding more or removing tab items.
     */
    private updateTabs;
    private addTabLabel;
    private removeTabLabel;
    private addTabContent;
    private removeTabContent;
    static ɵfac: i0.ɵɵFactoryDeclaration<DokuTabs, never>;
    static ɵcmp: i0.ɵɵComponentDeclaration<DokuTabs, "doku-tabs", ["dokuTabs"], { "activeId": "activeId"; "useContentCard": "useContentCard"; }, { "activeTabChange": "activeTabChange"; }, ["tabItems"], never, true>;
}