three.js/editor/js/libs/ui.editor.js

UI.MenubarHelper = {

	createMenuContainer: function ( name, optionsPanel ) {

		var container = new UI.Panel();
		var title = new UI.Panel();

		title.setTextContent( name );
		title.setMargin( '0px' );
		title.setPadding( '8px' );

		container.setClass( 'menu' );
		container.add( title );
		container.add( optionsPanel );

		return container;

	},
	
	createOption: function ( name, callbackHandler ) {

		var option = new UI.Panel();
		option.setClass( 'option' );
		option.setTextContent( name );
		option.onClick( callbackHandler );

		return option;

	},

	createOptionsPanel: function ( menuConfig ) {

		var options = new UI.Panel();
		options.setClass( 'options' );

		menuConfig.forEach(function(option) {
			options.add(option);
		});

		return options;

	},

	createDivider: function () {

		return new UI.HorizontalRule();

	}

};