001    /*
002     * Licensed to the Apache Software Foundation (ASF) under one
003     * or more contributor license agreements.  See the NOTICE file
004     * distributed with this work for additional information
005     * regarding copyright ownership.  The ASF licenses this file
006     * to you under the Apache License, Version 2.0 (the
007     * "License"); you may not use this file except in compliance
008     * with the License.  You may obtain a copy of the License at
009     *
010     *   http://www.apache.org/licenses/LICENSE-2.0
011     *
012     * Unless required by applicable law or agreed to in writing,
013     * software distributed under the License is distributed on an
014     * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
015     * KIND, either express or implied.  See the License for the
016     * specific language governing permissions and limitations
017     * under the License.
018     */
019    
020    package org.apache.myfaces.tobago.component;
021    
022    import org.apache.commons.logging.Log;
023    import org.apache.commons.logging.LogFactory;
024    import org.apache.myfaces.tobago.TobagoConstants;
025    import static org.apache.myfaces.tobago.TobagoConstants.ATTR_TIP;
026    
027    import javax.faces.component.UIComponent;
028    import javax.faces.component.UIOutput;
029    import javax.faces.context.FacesContext;
030    import javax.faces.el.ValueBinding;
031    import java.io.IOException;
032    
033    public class UILabel extends UIOutput implements SupportsMarkup {
034    
035      private static final Log LOG = LogFactory.getLog(UILabel.class);
036    
037      public static final String COMPONENT_TYPE = "org.apache.myfaces.tobago.Label";
038    
039      private String[] markup;
040      private String tip;
041    
042    
043      public String getTip() {
044        if (tip != null) {
045          return tip;
046        }
047        ValueBinding vb = getValueBinding(ATTR_TIP);
048        if (vb != null) {
049          return (String) vb.getValue(getFacesContext());
050        } else {
051          return null;
052        }
053      }
054    
055      public void setTip(String tip) {
056        this.tip = tip;
057      }
058    
059    
060      public void restoreState(FacesContext context, Object state) {
061        Object[] values = (Object[]) state;
062        super.restoreState(context, values[0]);
063        markup = (String[]) values[1];
064        tip = (String) values[2];
065      }
066    
067      public Object saveState(FacesContext context) {
068        Object[] values = new Object[3];
069        values[0] = super.saveState(context);
070        values[1] = markup;
071        values[2] = tip;
072        return values;
073      }
074    
075      public String[] getMarkup() {
076        if (markup != null) {
077          return markup;
078        }
079        return ComponentUtil.getMarkupBinding(getFacesContext(), this);
080      }
081    
082      public void setMarkup(String[] markup) {
083        this.markup = markup;
084      }
085    
086      @Override
087      public void encodeBegin(FacesContext facesContext) throws IOException {
088        String forComponent = (String) getAttributes().get(TobagoConstants.ATTR_FOR);
089        if (LOG.isDebugEnabled()) {
090          LOG.debug("for = '" + forComponent + "'");
091        }
092        if ("@auto".equals(forComponent)) {
093          for (Object object : getParent().getChildren()) {
094            UIComponent child = (UIComponent) object;
095            if (child instanceof javax.faces.component.UIInput) {
096              forComponent = child.getId();
097              getAttributes().put(TobagoConstants.ATTR_FOR, forComponent);
098              break;
099            }
100          }
101        }
102        super.encodeBegin(facesContext);
103      }
104    }