/*
* 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.event;
import javax.el.ELContext;
import javax.el.ValueExpression;
import javax.faces.component.StateHolder;
import javax.faces.context.FacesContext;
import javax.faces.event.AbortProcessingException;
import javax.faces.event.ActionEvent;
import javax.faces.event.ActionListener;
/**
* The MyFaces implementation of the <code>SetPropertyActionListener</code>.
*
* @author Dennis Byrne
* @since 1.2
*/
public class SetPropertyActionListener implements ActionListener, StateHolder
{
private ValueExpression target;
private ValueExpression value;
private boolean _transient ;
public SetPropertyActionListener(){}
public SetPropertyActionListener(ValueExpression target, ValueExpression value)
{
this.target = target;
this.value = value;
}
public void processAction(ActionEvent actionEvent) throws AbortProcessingException
{
if( target == null )
{
throw new AbortProcessingException("@target has not been set");
}
if( value == null )
{
throw new AbortProcessingException("@value has not been set");
}
FacesContext ctx = FacesContext.getCurrentInstance();
if( ctx == null )
{
throw new AbortProcessingException("FacesContext ctx is null");
}
ELContext ectx = ctx.getELContext();
if( ectx == null )
{
throw new AbortProcessingException("ELContext ectx is null");
}
// TODO use a Converter before calling setValue
target.setValue(ectx, value.getValue(ectx));
}
public Object saveState(FacesContext context)
{
Object[] state = new Object[2];
state[0] = target;
state[1] = value;
return state;
}
public void restoreState(FacesContext context, Object state)
{
Object[] values = (Object[]) state;
target = (ValueExpression) values[0];
value = (ValueExpression) values[1];
}
public boolean isTransient()
{
return _transient;
}
public void setTransient(boolean trans)
{
this._transient = trans;
}
public ValueExpression getTarget()
{
return target;
}
public void setTarget(ValueExpression target)
{
this.target = target;
}
public ValueExpression getValue()
{
return value;
}
public void setValue(ValueExpression value)
{
this.value = value;
}
}