import { AfterContentInit, EventEmitter, OnChanges, OnDestroy, OnInit, QueryList, SimpleChanges } from '@angular/core';
import { Router } from '@angular/router';
import { Subscription } from 'rxjs';
import { TabDirective } from './tab.directive';
import { EventTabChange, Tab } from './tabs.models';
import * as i0 from "@angular/core";
export declare class TabsComponent implements OnChanges, OnInit, AfterContentInit, OnDestroy {
    protected router: Router;
    /** @internal */
    baseClass: boolean;
    /** Special property used for selecting DOM elements during automated UI testing. */
    thook: string | null | undefined;
    /** @internal List of children with a {@link TabDirective}. */
    tabRefs: QueryList<TabDirective>;
    /**
     * List of tabs to generate, this should not be used in conjunction with children that have a {@link TabDirective}.
     * It is useful for generating a list of tabs with links for navigation.
     * If any tab has the link property, a `<router-outlet>` is added below the tabs list.
     */
    tabs: Tab[];
    /**
     * Event triggered on initialization and every time the active tab changes.
     * The tab change can be cancelled if event type is set to `'before'` and `cancel()` is called.
     */
    ngvTabSwitch: EventEmitter<EventTabChange>;
    /** @internal Adds a `<router-outlet>` below the tabs list. */
    useRouting: boolean;
    /** @internal The currently active tab. */
    selectedTab: Tab | undefined;
    /** @internal If tab switching has started. */
    isSwitching: boolean;
    /** @internal */
    protected subs: Subscription[];
    constructor(router: Router);
    /** @internal */
    static uniqueIds(tabs: Tab[]): {
        tab: string;
        id?: string | number;
        thook?: string;
        active?: boolean;
        disabled?: boolean;
        link?: string;
        directive?: TabDirective;
    }[];
    ngOnChanges(changes: SimpleChanges): void;
    ngOnInit(): void;
    ngAfterContentInit(): void;
    /** @internal */
    protected updateFromInput: () => void;
    /** @internal */
    protected updateFromReferences: () => void;
    /** @internal */
    protected updateTabs(): void;
    ngOnDestroy(): void;
    /** @internal */
    protected activateTab(tab: Tab): void;
    /** @internal */
    onSelect(id: string | number | undefined): void;
    /** @internal */
    onKeyDown(event: KeyboardEvent): boolean;
    /** @internal */
    protected tabFocusHelper(event: KeyboardEvent, tabElement: HTMLElement): void;
    static ɵfac: i0.ɵɵFactoryDeclaration<TabsComponent, never>;
    static ɵcmp: i0.ɵɵComponentDeclaration<TabsComponent, "nggv-tabs", never, { "thook": { "alias": "thook"; "required": false; }; "tabs": { "alias": "tabs"; "required": false; }; }, { "ngvTabSwitch": "ngvTabSwitch"; }, ["tabRefs"], ["*"], false, never>;
}