/*

  * 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 javax.el.ValueExpression;

 import javax.faces.component.EditableValueHolder;

 import javax.faces.event.ActionListener;

 import javax.faces.event.ValueChangeListener;

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

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

 /**

  * Adds the specified ValueChangeListener to the nearest parent UIComponent 

  * (which is expected to be a UIInput component).

  * <p>

  * Whenever the form containing the parent UIComponent is submitted,

  * an instance of the specified type is created. If the submitted

  * value from the component is different from the component's current

  * value then a ValueChangeEvent is queued. When the ValueChangeEvent

  * is processed (at end of the validate phase for non-immediate components,

  * or at end of the apply-request-values phase for immediate components)

  * the object's processValueChange method is invoked.

  * </p>

  * <p>

  * Unless otherwise specified, all attributes accept static values

  * or EL expressions.

  * </p>

  * @author Manfred Geiler (latest modification by $Author: lu4242 $)

  * @version $Revision: 693358 $ $Date: 2008-09-08 22:54:29 -0500 (Mon, 08 Sep 2008) $

  */

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

 public class ValueChangeListenerTag

         extends GenericListenerTag<EditableValueHolder, ValueChangeListener>

 {

     private static final long serialVersionUID = 2155190261951046892L;

     public ValueChangeListenerTag()

     {

         super(EditableValueHolder.class);

     }

     protected void addListener(EditableValueHolder editableValueHolder, ValueChangeListener valueChangeListener)

     {

         editableValueHolder.addValueChangeListener(valueChangeListener);

     }

     protected ValueChangeListener createDelegateListener(ValueExpression type,

             ValueExpression binding)

     {

         return new DelegateValueChangeListener(type,binding);

     }

     /**

      * The name of a Java class that implements ValueChangeListener.

      */

     @JSFJspAttribute(

             className="java.lang.String",

             rtexprvalue=true)

     public void setType(ValueExpression type)

     {

         super.setType(type);

     }

     /**

      * Value binding expression that evaluates to an implementation of

      * the javax.faces.event.ValueChangeListener interface.

      */

     @JSFJspAttribute(

             className="javax.faces.event.ValueChangeListener",

             rtexprvalue=true)

     public void setBinding(ValueExpression binding)

     {

         super.setBinding(binding);

     }    

 }