import { ElementRef } from '@angular/core';
import * as i0 from "@angular/core";
export declare const FOCUSABLE_SELECTOR = "gtx-dropdown-item, a[href], area[href], input:not([disabled]), select:not([disabled]), \n    textarea:not([disabled]), button:not([disabled]), iframe, object, embed, *[tabindex], *[contenteditable]";
export declare class DropdownTriggerDirective {
    elementRef: ElementRef;
    constructor(elementRef: ElementRef);
    /**
     * Focus the first focusable descendant of this element.
     */
    focus(): void;
    static ɵfac: i0.ɵɵFactoryDeclaration<DropdownTriggerDirective, never>;
    static ɵdir: i0.ɵɵDirectiveDeclaration<DropdownTriggerDirective, "gtx-dropdown-trigger", never, {}, {}, never>;
}