/*
    * Licensed to the Apache Software Foundation (ASF) under one
    * or more contributor license agreements.  See the NOTICE file
    * distributed with this work for additional information
    * regarding copyright ownership.  The ASF licenses this file
    * to you under the Apache License, Version 2.0 (the
    * "License"); you may not use this file except in compliance
    * with the License.  You may obtain a copy of the License at
    *
   *   http://www.apache.org/licenses/LICENSE-2.0
   *
   * Unless required by applicable law or agreed to in writing,
   * software distributed under the License is distributed on an
   * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
   * KIND, either express or implied.  See the License for the
   * specific language governing permissions and limitations
   * under the License.
   */
  package org.apache.myfaces.custom.aliasbean;
  
  import javax.faces.component.UIComponent;
  import javax.servlet.jsp.JspException;
  
  import org.apache.myfaces.shared_tomahawk.taglib.UIComponentTagBase;
  import org.apache.commons.logging.Log;
  import org.apache.commons.logging.LogFactory;
  
  /**
   * @author Sylvain Vieujot (latest modification by $Author: lu4242 $)
   * @version $Revision: 671015 $ $Date: 2008-06-23 23:22:49 -0500 (Mon, 23 Jun 2008) $
   */
  public class AliasBeanTag extends UIComponentTagBase {
  
      private Log log = LogFactory.getLog(AliasBeanTag.class);
  
      private String _alias;
      private String _valueExpression;
  
      public void release() {
          super.release();
  
          _alias=null;
          _valueExpression=null;
  
      }
  
      protected void setProperties(UIComponent component) {
          super.setProperties(component);
  
          setValueBinding(component, "alias", _alias);
          setStringProperty(component, "value", _valueExpression);
      }
  
      public String getComponentType() {
          return AliasBean.COMPONENT_TYPE;
      }
  
      public String getRendererType() {
          return null;
      }
  
      public void setAlias(String alias){
          _alias = alias;
      }
  
      public void setValue(String valueExpression){
          _valueExpression = valueExpression;
      }
  
      public int doStartTag() throws JspException
      {
          int retVal= super.doStartTag();
  
          UIComponent comp = getComponentInstance();
  
          if(comp instanceof AliasBean)
          {
              ((AliasBean) comp).makeAlias(getFacesContext());
          }
          else
          {
              log.warn("associated component is no aliasBean");
          }
  
          return retVal;
      }
  
      public int doEndTag() throws JspException
      {
          UIComponent comp = getComponentInstance();
  
          if(comp instanceof AliasBean)
          {
              ((AliasBean) comp).removeAlias(getFacesContext());
          }
          else
          {
              log.warn("associated component is no aliasBean");
          }
 
         return super.doEndTag();
     }
 }