/**
 *
 * carbon-angular v0.0.0 | tab-header-group-vertical.component.d.ts
 *
 * Copyright 2014, 2026 IBM
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *   http://www.apache.org/licenses/LICENSE-2.0

 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */


import { AfterContentInit, ChangeDetectorRef, ElementRef, EventEmitter, OnChanges, OnDestroy, OnInit, QueryList, Renderer2, SimpleChanges } from "@angular/core";
import { EventService } from "carbon-components-angular/utils";
import { I18n } from "carbon-components-angular/i18n";
import { BaseTabHeader } from "./base-tab-header.component";
import { TabHeaderBase } from "./tab-header.directive";
import * as i0 from "@angular/core";
/**
 * Vertical tab header group: same children as `cds-tab-header-group`, with
 * up/down (and Home/End) keys, gradient overflow, and always-contained type.
 *
 *
 * ```html
 * <cds-tabs-vertical-grouped height="400px">
 *   <cds-tab-header-group-vertical>
 *     <cds-tab-header [paneReference]="a">A</cds-tab-header>
 *     <cds-tab-header [paneReference]="b">B</cds-tab-header>
 *   </cds-tab-header-group-vertical>
 *   <cds-tab #a>...</cds-tab>
 *   <cds-tab #b>...</cds-tab>
 * </cds-tabs-vertical-grouped>
 * ```
 */
export declare class TabHeaderGroupVertical extends BaseTabHeader implements AfterContentInit, OnChanges, OnInit, OnDestroy {
    protected elementRef: ElementRef;
    protected changeDetectorRef: ChangeDetectorRef;
    protected eventService: EventService;
    protected renderer: Renderer2;
    protected i18n: I18n;
    /**
     * i18n strings for the tab list `aria-label` fallback.
     */
    translations: any;
    /**
     * When `true`, sets each tab panel `tabindex` to `-1` for navigation-style usage.
     */
    isNavigation: boolean;
    /**
     * Fires with tab index when a close control is used (with `dismissable`).
     */
    tabClose: EventEmitter<number>;
    /**
     * Set to 'true' to have tabs automatically activated and have their content displayed when they receive focus.
     */
    followFocus: boolean;
    /**
     * ContentChildren of all the tab headers (both directive and component
     * forms — see `TabHeaderBase`).
     */
    tabHeaderQuery: QueryList<TabHeaderBase>;
    headerContainer: ElementRef<HTMLElement>;
    verticalClass: boolean;
    /**
     * Index of the selected tab for keyboard logic
     */
    currentSelectedTab: number;
    /**
     * Focused tab index when `followFocus` is false (manual activation).
     */
    activeIndex: number | null;
    isOverflowingTop: boolean;
    isOverflowingBottom: boolean;
    /**
     * We use taller rows when any header has a secondary label.
     */
    get tallClass(): boolean;
    get hasSecondaryLabelTabs(): boolean;
    private selectedSubscriptionTracker;
    private closeSubscriptionTracker;
    private resizeObserver;
    private boundListScrollHandler;
    constructor(elementRef: ElementRef, changeDetectorRef: ChangeDetectorRef, eventService: EventService, renderer: Renderer2, i18n: I18n);
    keyboardInput(event: KeyboardEvent): void;
    handleBlur(event: FocusEvent): void;
    ngOnInit(): void;
    ngOnDestroy(): void;
    ngAfterContentInit(): void;
    ngOnChanges(changes: SimpleChanges): void;
    protected updateOverflowState(): void;
    protected scrollSelectedTabIntoView(): void;
    private applyHeaderInputs;
    private wireSubscriptions;
    static ɵfac: i0.ɵɵFactoryDeclaration<TabHeaderGroupVertical, never>;
    static ɵcmp: i0.ɵɵComponentDeclaration<TabHeaderGroupVertical, "cds-tab-header-group-vertical, ibm-tab-header-group-vertical", never, { "translations": "translations"; "isNavigation": "isNavigation"; "followFocus": "followFocus"; }, { "tabClose": "tabClose"; }, ["tabHeaderQuery"], ["*"], false>;
}
