001    package org.gwtbootstrap3.client.ui;
002    
003    /*
004     * #%L
005     * GwtBootstrap3
006     * %%
007     * Copyright (C) 2013 GwtBootstrap3
008     * %%
009     * Licensed under the Apache License, Version 2.0 (the "License");
010     * you may not use this file except in compliance with the License.
011     * You may obtain a copy of the License at
012     * 
013     *      http://www.apache.org/licenses/LICENSE-2.0
014     * 
015     * Unless required by applicable law or agreed to in writing, software
016     * distributed under the License is distributed on an "AS IS" BASIS,
017     * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
018     * See the License for the specific language governing permissions and
019     * limitations under the License.
020     * #L%
021     */
022    
023    import org.gwtbootstrap3.client.ui.base.HasPull;
024    import org.gwtbootstrap3.client.ui.base.mixin.PullMixin;
025    import org.gwtbootstrap3.client.ui.constants.Attributes;
026    import org.gwtbootstrap3.client.ui.constants.Pull;
027    import org.gwtbootstrap3.client.ui.constants.Styles;
028    import org.gwtbootstrap3.client.ui.html.UnorderedList;
029    
030    /**
031     * Container for drop down menu items.
032     * <p/>
033     * <strong>Must</strong> be encapsulated in a {@link ButtonGroup} to build button dropdowns.
034     *
035     * @author Sven Jacobs
036     * @see ButtonGroup
037     */
038    public class DropDownMenu extends UnorderedList implements HasPull {
039        private static final String MENU = "menu";
040    
041        private final PullMixin<DropDownMenu> pullMixin = new PullMixin<DropDownMenu>(this);
042    
043        public DropDownMenu() {
044            setStyleName(Styles.DROPDOWN_MENU);
045            getElement().setAttribute(Attributes.ROLE, MENU);
046        }
047    
048        @Override
049        public void setPull(final Pull pull) {
050            pullMixin.setPull(pull);
051        }
052    
053        @Override
054        public Pull getPull() {
055            return pullMixin.getPull();
056        }
057    }