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 org.apache.myfaces.tobago.TobagoConstants;
023    
024    import javax.faces.component.UIComponent;
025    import javax.faces.component.UIOutput;
026    import javax.faces.context.FacesContext;
027    import java.io.IOException;
028    
029    public class UILabel extends UIOutput {
030    
031      private static final Log LOG = LogFactory.getLog(UILabel.class);
032    
033      public static final String COMPONENT_TYPE = "org.apache.myfaces.tobago.Label";
034    
035      @Override
036      public void encodeBegin(FacesContext facesContext) throws IOException {
037        String forComponent = (String) getAttributes().get(TobagoConstants.ATTR_FOR);
038        if (LOG.isDebugEnabled()) {
039          LOG.debug("for = '" + forComponent + "'");
040        }
041        if ("@auto".equals(forComponent)) {
042          for(Object object : getParent().getChildren()) {
043            UIComponent child = (UIComponent) object;
044            if (child instanceof javax.faces.component.UIInput) {
045              forComponent = child.getId();
046              getAttributes().put(TobagoConstants.ATTR_FOR, forComponent);
047              break;
048            }
049          }
050        }
051    
052        super.encodeBegin(facesContext);
053      }
054    
055    }