001    package org.gwtbootstrap3.client.ui.base.mixin;
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 java.util.List;
024    
025    import org.gwtbootstrap3.client.ui.base.HasDataTarget;
026    import org.gwtbootstrap3.client.ui.constants.Attributes;
027    
028    import com.google.gwt.dom.client.Document;
029    import com.google.gwt.user.client.ui.UIObject;
030    import com.google.gwt.user.client.ui.Widget;
031    
032    /**
033     * @author Sven Jacobs
034     */
035    public class DataTargetMixin<T extends UIObject & HasDataTarget> extends AbstractMixin implements HasDataTarget {
036    
037        public DataTargetMixin(final T uiObject) {
038            super(uiObject);
039        }
040    
041        @Override
042        public void setDataTargetWidget(final Widget widget) {
043            final String id = Document.get().createUniqueId();
044            widget.getElement().setId(id);
045            this.setDataTarget("#" + id);
046        }
047    
048        @Override
049        public void setDataTargetWidgets(final List<Widget> widgets) {
050            final String styleName = Document.get().createUniqueId();
051            for (final Widget widget : widgets) {
052                widget.addStyleName(styleName);
053            }
054            this.setDataTarget("." + styleName);
055        }
056    
057        @Override
058        public void setDataTarget(final String dataTarget) {
059            if (dataTarget != null) {
060                uiObject.getElement().setAttribute(Attributes.DATA_TARGET, dataTarget);
061            } else {
062                uiObject.getElement().removeAttribute(Attributes.DATA_TARGET);
063            }
064        }
065    
066        @Override
067        public String getDataTarget() {
068            return uiObject.getElement().getAttribute(Attributes.DATA_TARGET);
069        }
070    }