import { ImpulseElement } from '@ambiki/impulse';
export default class DropdownElement extends ImpulseElement {
    /**
     * Whether the dropdown is open or not. To make the dropdown open by default, set the `open` attribute.
     */
    open: boolean;
    trigger: HTMLButtonElement;
    menu: HTMLElement;
    menuItems: HTMLElement[];
    private _focusTrap?;
    constructor();
    connected(): void;
    disconnected(): void;
    openChanged(value: boolean): void;
    triggerConnected(trigger: HTMLButtonElement): void;
    triggerDisconnected(trigger: HTMLButtonElement): void;
    menuConnected(menu: HTMLElement): void;
    menuDisconnected(menu: HTMLElement): void;
    menuItemsConnected(menuItem: HTMLElement): void;
    menuItemsDisconnected(menuItem: HTMLElement): void;
    private handleTriggerClick;
    private handleKeydown;
    private handleMove;
    private handleLeave;
    private handleMenuClick;
    private openAndTrapFocus;
    activateMenuItem(menuItem: HTMLElement): void;
    deactivateAllMenuItems(): void;
    get activeMenuItem(): HTMLElement | undefined;
    menuItemActive(menuItem: HTMLElement): boolean;
    get interactableMenuItems(): HTMLElement[];
    get floatingPanel(): import("../floating_panel").default | null;
    private syncState;
}
declare global {
    interface Window {
        DropdownElement: typeof DropdownElement;
    }
    interface HTMLElementTagNameMap {
        'twc-dropdown': DropdownElement;
    }
}
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