/** * @license Copyright (c) 2003-2020, CKSource - Frederico Knabben. All rights reserved. * For licensing, see LICENSE.md or https://ckeditor.com/legal/ckeditor-oss-license */ /** * @module ui/dropdown/button/dropdownbutton */ /** * The dropdown button interface. * * @interface module:ui/dropdown/button/dropdownbutton~DropdownButton * @extends module:ui/button/button~Button */ /** * Fired when the dropdown should be opened. * It will not be fired when the button {@link #isEnabled is disabled}. * * @event open */