001    package org.apache.myfaces.tobago.component;
002    
003    /*
004     * Licensed to the Apache Software Foundation (ASF) under one or more
005     * contributor license agreements.  See the NOTICE file distributed with
006     * this work for additional information regarding copyright ownership.
007     * The ASF licenses this file to You under the Apache License, Version 2.0
008     * (the "License"); you may not use this file except in compliance with
009     * the License.  You may obtain a copy of the License at
010     *
011     *      http://www.apache.org/licenses/LICENSE-2.0
012     *
013     * Unless required by applicable law or agreed to in writing, software
014     * distributed under the License is distributed on an "AS IS" BASIS,
015     * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
016     * See the License for the specific language governing permissions and
017     * limitations under the License.
018     */
019    
020    import org.apache.commons.logging.Log;
021    import org.apache.commons.logging.LogFactory;
022    import static org.apache.myfaces.tobago.TobagoConstants.ATTR_INNER_HEIGHT;
023    import static org.apache.myfaces.tobago.TobagoConstants.ATTR_INNER_WIDTH;
024    import static org.apache.myfaces.tobago.TobagoConstants.ATTR_LAYOUT_HEIGHT;
025    import static org.apache.myfaces.tobago.TobagoConstants.ATTR_LAYOUT_WIDTH;
026    import static org.apache.myfaces.tobago.TobagoConstants.RENDERER_TYPE_DEFAULT_LAYOUT;
027    
028    import javax.faces.component.UIComponent;
029    import javax.faces.context.FacesContext;
030    
031    public class UIDefaultLayout extends UILayout {
032      private static final Log LOG = LogFactory.getLog(UIDefaultLayout.class);
033    
034      public static final String COMPONENT_TYPE = "org.apache.myfaces.tobago.DefaultLayout";
035      public static final String COMPONENT_FAMILY = "org.apache.myfaces.tobago.Layout";
036    
037    
038      private static UIDefaultLayout instance;
039    
040      public static synchronized UIDefaultLayout getInstance() {
041        if (instance == null) {
042          instance = (UIDefaultLayout)
043              ComponentUtil.createComponent(COMPONENT_TYPE, RENDERER_TYPE_DEFAULT_LAYOUT);
044          instance.setId("UIDefaultLayout");
045        }
046        return instance;
047      }
048    
049      public void layoutBegin(FacesContext facesContext, UIComponent component) {
050        super.layoutBegin(facesContext, component);
051        //TODO why is this needed? 
052        for (Object child : component.getChildren()) {
053          ((UIComponent) child).getAttributes().remove(ATTR_INNER_WIDTH);
054          ((UIComponent) child).getAttributes().remove(ATTR_INNER_HEIGHT);
055          ((UIComponent) child).getAttributes().remove(ATTR_LAYOUT_WIDTH);
056          ((UIComponent) child).getAttributes().remove(ATTR_LAYOUT_HEIGHT);
057        }
058      }
059    
060      public String getFamily() {
061        return COMPONENT_FAMILY;
062      }
063    
064    }