/*
* 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.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.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
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 ValueExpression target;
private ValueExpression value;
public int doStartTag() throws JspException
{
if(log.isDebugEnabled())
log.debug("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.isDebugEnabled())
log.debug(" ... 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)
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)
public ValueExpression getValue()
{
return value;
}
public void setValue(ValueExpression value)
{
this.value = value;
}
public void release()
{
target = null;
value = null;
}
}