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    import static org.apache.myfaces.tobago.TobagoConstants.ATTR_TIP;
024    
025    import javax.faces.component.UIComponent;
026    import javax.faces.component.UIOutput;
027    import javax.faces.context.FacesContext;
028    import javax.faces.el.ValueBinding;
029    import java.io.IOException;
030    
031    public class UILabel extends UIOutput implements SupportsMarkup {
032    
033      private static final Log LOG = LogFactory.getLog(UILabel.class);
034    
035      public static final String COMPONENT_TYPE = "org.apache.myfaces.tobago.Label";
036    
037      private String[] markup;
038      private String tip;
039    
040    
041      public String getTip() {
042        if (tip != null) {
043          return tip;
044        }
045        ValueBinding vb = getValueBinding(ATTR_TIP);
046        if (vb != null) {
047          return (String) vb.getValue(getFacesContext());
048        } else {
049          return null;
050        }
051      }
052    
053      public void setTip(String tip) {
054        this.tip = tip;
055      }
056    
057    
058      public void restoreState(FacesContext context, Object state) {
059        Object[] values = (Object[]) state;
060        super.restoreState(context, values[0]);
061        markup = (String[]) values[1];
062        tip = (String) values[2];
063      }
064    
065      public Object saveState(FacesContext context) {
066        Object[] values = new Object[3];
067        values[0] = super.saveState(context);
068        values[1] = markup;
069        values[2] = tip;
070        return values;
071      }
072    
073      public String[] getMarkup() {
074        if (markup != null) {
075          return markup;
076        }
077        return ComponentUtil.getMarkupBinding(getFacesContext(), this);
078      }
079    
080      public void setMarkup(String[] markup) {
081        this.markup = markup;
082      }
083    
084      @Override
085      public void encodeBegin(FacesContext facesContext) throws IOException {
086        String forComponent = (String) getAttributes().get(TobagoConstants.ATTR_FOR);
087        if (LOG.isDebugEnabled()) {
088          LOG.debug("for = '" + forComponent + "'");
089        }
090        if ("@auto".equals(forComponent)) {
091          for (Object object : getParent().getChildren()) {
092            UIComponent child = (UIComponent) object;
093            if (child instanceof javax.faces.component.UIInput) {
094              forComponent = child.getId();
095              getAttributes().put(TobagoConstants.ATTR_FOR, forComponent);
096              break;
097            }
098          }
099        }
100        super.encodeBegin(facesContext);
101      }
102    }