/*

  * 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.taglib.core;

 import java.util.logging.Level;

 import java.util.logging.Logger;

 import javax.el.ValueExpression;

 import javax.faces.component.ActionSource;

 import javax.faces.component.UIComponent;

 import javax.faces.event.ActionListener;

 import javax.faces.webapp.UIComponentClassicTagBase;

 import javax.servlet.jsp.JspException;

 import javax.servlet.jsp.tagext.TagSupport;

 import org.apache.myfaces.buildtools.maven2.plugin.builder.annotation.JSFJspAttribute;

 import org.apache.myfaces.buildtools.maven2.plugin.builder.annotation.JSFJspTag;

 import org.apache.myfaces.event.SetPropertyActionListener;

 /**

  * @author Dennis Byrne

  * @since 1.2

  */

 @JSFJspTag(name = "f:setPropertyActionListener", bodyContent = "empty")

 public class SetPropertyActionListenerTag extends TagSupport

 {

     //private static final Log log = LogFactory.getLog(SetPropertyActionListenerTag.class);

     private static final Logger log = Logger.getLogger(SetPropertyActionListenerTag.class.getName());

     private ValueExpression target;

     private ValueExpression value;

     @Override

     public int doStartTag() throws JspException

     {

         if (log.isLoggable(Level.FINE))

         {

             log.fine("JSF 1.2 Spec : Create a new instance of the ActionListener");

         }

         ActionListener actionListener = new SetPropertyActionListener(target, value);

         UIComponentClassicTagBase tag = UIComponentClassicTagBase.getParentUIComponentClassicTagBase(pageContext);

         if (tag == null)

         {

             throw new JspException("Could not find a " + "parent UIComponentClassicTagBase ... is this "

                     + "tag in a child of a UIComponentClassicTagBase?");

         }

         if (tag.getCreated())

         {

             UIComponent component = tag.getComponentInstance();

             if (component == null)

             {

                 throw new JspException(" Could not locate a UIComponent " + "for a UIComponentClassicTagBase w/ a "

                         + "JSP id of " + tag.getJspId());

             }

             if (!(component instanceof ActionSource))

             {

                 throw new JspException("Component w/ id of " + component.getId()

                         + " is associated w/ a tag w/ JSP id of " + tag.getJspId() + ". This component is of type "

                         + component.getClass() + ", which is not an " + ActionSource.class);

             }

             if (log.isLoggable(Level.FINE))

             {

                 log.fine(" ... register it with the UIComponent " + "instance associated with our most immediately "

                         + "surrounding UIComponentTagBase");

             }

             ((ActionSource)component).addActionListener(actionListener);

         }

         return SKIP_BODY;

     }

     /**

      * ValueExpression for the destination of the value attribute.

      */

     @JSFJspAttribute(required = true,

             className="javax.el.ValueExpression",

             deferredValueType="java.lang.Object")

     public ValueExpression getTarget()

     {

         return target;

     }

     public void setTarget(ValueExpression target)

     {

         this.target = target;

     }

     /**

      * ValueExpression for the value of the target attribute.

      * 

      * @return

      */

     @JSFJspAttribute(required = true,

             className="javax.el.ValueExpression",

             deferredValueType="java.lang.Object")

     public ValueExpression getValue()

     {

         return value;

     }

     public void setValue(ValueExpression value)

     {

         this.value = value;

     }

     @Override

     public void release()

     {

         target = null;

         value = null;

     }

 }