import { ImpulseElement } from '@ambiki/impulse';
export default class PopoverElement extends ImpulseElement {
    trigger: HTMLButtonElement;
    panel: HTMLElement;
    private _focusTrap?;
    constructor();
    /**
     * Called when the element is connected to the DOM.
     */
    connected(): void;
    /**
     * Called when the element is removed from the DOM.
     */
    disconnected(): void;
    /**
     * Called when the trigger is connected to the DOM.
     */
    triggerConnected(trigger: HTMLElement): void;
    /**
     * Called when the trigger is removed from the DOM.
     */
    triggerDisconnected(trigger: HTMLElement): void;
    /**
     * Called when the panel is connected to the DOM.
     */
    panelConnected(panel: HTMLElement): void;
    private handleTriggerClick;
    private handleKeydown;
    /**
     * Shows the popover.
     */
    show(): void;
    /**
     * Hides the popover.
     * If this function is called by a user interaction, after hiding, it will focus on the trigger element and emit a
     * `hidden` event.
     */
    hide(event?: Event): void;
    private closeOtherPopovers;
    /**
     * Whether the popover is open or not.
     */
    get open(): boolean;
    get floatingPanel(): import("../floating_panel").default | null;
    /**
     * Return `true` if there are nested popovers that are open, else `false`.
     */
    get hasNestedOpenPopovers(): boolean;
}
declare global {
    interface Window {
        PopoverElement: typeof PopoverElement;
    }
    interface HTMLElementTagNameMap {
        'twc-popover': PopoverElement;
    }
}
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