/** Autogenerated by public2business schematic. DO NOT CHANGE! */
import { FocusableOption, FocusMonitor, FocusOrigin } from '@angular/cdk/a11y';
import { NumberInput } from '@angular/cdk/coercion';
import { ChangeDetectorRef, ElementRef, OnDestroy } from '@angular/core';
import { HasTabIndex, TypeRef } from '@sbb-esta/angular-core/common-behaviors';
import { SbbExpansionPanel } from '../expansion-panel/expansion-panel.component';
/** @docs-private */
declare abstract class SbbExpansionPanelHeaderBase {
    abstract readonly disabled: boolean;
}
declare const _SbbExpansionPanelHeaderMixinBase: import("@sbb-esta/angular-core/common-behaviors").HasTabIndexCtor & typeof SbbExpansionPanelHeaderBase;
/**
 * `<sbb-expansion-panel-header>`
 *
 * This component corresponds to the header element of an `<sbb-expansion-panel>`.
 */
export declare class SbbExpansionPanelHeader extends _SbbExpansionPanelHeaderMixinBase implements OnDestroy, FocusableOption, HasTabIndex {
    /** Class property that refers to the ExpansionPanelComponent. */
    panel: SbbExpansionPanel;
    private _element;
    private _focusMonitor;
    private _changeDetectorRef;
    private _document?;
    /**
     * Whether the associated panel is disabled. Implemented as a part of `FocusableOption`.
     * @docs-private
     */
    get disabled(): boolean;
    private _parentChangeSubscription;
    constructor(
    /** Class property that refers to the ExpansionPanelComponent. */
    panel: SbbExpansionPanel, _element: ElementRef, _focusMonitor: FocusMonitor, _changeDetectorRef: ChangeDetectorRef, _document?: Document | undefined, tabIndex?: string);
    /** Toggles the expanded state of the panel. */
    _toggle(): void;
    /** Gets whether the panel is expanded. */
    _isExpanded(): boolean;
    /** Gets the expanded state string of the panel. */
    _getExpandedState(): string;
    /** Gets the panel id. */
    _getPanelId(): string;
    /** Gets whether the expand indicator should be shown. */
    _showToggle(): boolean;
    /** Handle keydown event calling to toggle() if appropriate. */
    _keydown(event: TypeRef<KeyboardEvent>): void;
    /**
     * Focuses the panel header. Implemented as a part of `FocusableOption`.
     * @param origin Origin of the action that triggered the focus.
     * @docs-private
     */
    focus(origin?: FocusOrigin, options?: FocusOptions): void;
    ngOnDestroy(): void;
    private _isFocused;
    static ngAcceptInputType_tabIndex: NumberInput;
}
export {};