/**
 *
 * carbon-angular v0.0.0 | tab-header.directive.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 { EventEmitter, ElementRef, AfterViewInit, TemplateRef } from "@angular/core";
import { Tab } from "./tab.component";
import * as i0 from "@angular/core";
/**
 * Shared inputs, outputs, and selection logic for `[cdsTabHeader]`
 * and `cds-tab-header` as we prepare for deprecation.
 * Groups use `@ContentChildren(TabHeaderBase)` so both forms appear in DOM order,
 * subclasses supply the template and host behavior.
 */
export declare abstract class TabHeaderBase {
    /**
     * Set to 'true' to have pane reference cached and not reloaded on tab switching.
     */
    set cacheActive(shouldCache: boolean);
    get cacheActive(): boolean;
    /**
     * Sets `tabIndex` on the linked `Tab` pane when the pane reference is set.
     */
    set paneTabIndex(tabIndex: number | null);
    /**
     * Selected tab; controls whether the linked pane content is shown.
     */
    active: boolean;
    /**
     * Indicates whether or not the `Tab` item is disabled.
     */
    disabled: boolean;
    /**
     * Icon template; used with `cds-tab-header` / `cds-tab-header-group`.
     */
    icon: TemplateRef<any>;
    /**
     * Optional secondary label rendered below the primary tab label.
     * Only displayed when the parent group is using `type="contained"`.
     */
    secondaryLabel: string;
    /**
     * Set to `true` to render this tab header as dismissable.
     */
    dismissable: boolean;
    /**
     * Reference to the corresponding tab pane.
     */
    paneReference: Tab;
    /**
     * Title attribute used as the tooltip for the tab item. Falls back to the tab item's text content if not provided.
     */
    title: string;
    /**
     * Emits when this header becomes selected.
     */
    selected: EventEmitter<any>;
    /**
     * Emits when this tabs's close button is pressed.
     */
    tabClose: EventEmitter<void>;
    protected _cacheActive: boolean;
    /**
     * Move keyboard focus to the tab item.
     */
    abstract focus(): void;
    /**
     * Activates the linked pane and emits `selected`.
     */
    selectTab(): void;
    static ɵfac: i0.ɵɵFactoryDeclaration<TabHeaderBase, never>;
    static ɵdir: i0.ɵɵDirectiveDeclaration<TabHeaderBase, never, never, { "cacheActive": "cacheActive"; "paneTabIndex": "paneTabIndex"; "active": "active"; "disabled": "disabled"; "icon": "icon"; "secondaryLabel": "secondaryLabel"; "dismissable": "dismissable"; "paneReference": "paneReference"; "title": "title"; }, { "selected": "selected"; "tabClose": "tabClose"; }, never, never, false>;
}
/**
 * Tab header as an attribute on a focusable host inside `cds-tab-header-group`.
 *
 * @deprecated as of v5.
 * Prefer `cds-tab-header` for icons, secondary labels, dismissable close, and icon-only tabs.
 */
export declare class TabHeader extends TabHeaderBase implements AfterViewInit {
    private host;
    get tabIndex(): 0 | -1;
    get isSelected(): boolean;
    get isDisabled(): boolean;
    type: string;
    get ariaSelected(): boolean;
    get ariaDisabled(): boolean;
    navItem: boolean;
    navLink: boolean;
    get hostTitle(): string;
    constructor(host: ElementRef);
    onClick(): void;
    onKeyDown(event: KeyboardEvent): void;
    ngAfterViewInit(): void;
    focus(): void;
    static ɵfac: i0.ɵɵFactoryDeclaration<TabHeader, never>;
    static ɵdir: i0.ɵɵDirectiveDeclaration<TabHeader, "[cdsTabHeader], [ibmTabHeader]", never, {}, {}, never, never, false>;
}