javax.faces.event.ValueChangeEvent Maven / Gradle / Ivy
/*
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
*
* Copyright (c) 1997-2010 Oracle and/or its affiliates. All rights reserved.
*
* The contents of this file are subject to the terms of either the GNU
* General Public License Version 2 only ("GPL") or the Common Development
* and Distribution License("CDDL") (collectively, the "License"). You
* may not use this file except in compliance with the License. You can
* obtain a copy of the License at
* https://glassfish.dev.java.net/public/CDDL+GPL_1_1.html
* or packager/legal/LICENSE.txt. See the License for the specific
* language governing permissions and limitations under the License.
*
* When distributing the software, include this License Header Notice in each
* file and include the License file at packager/legal/LICENSE.txt.
*
* GPL Classpath Exception:
* Oracle designates this particular file as subject to the "Classpath"
* exception as provided by Oracle in the GPL Version 2 section of the License
* file that accompanied this code.
*
* Modifications:
* If applicable, add the following below the License Header, with the fields
* enclosed by brackets [] replaced by your own identifying information:
* "Portions Copyright [year] [name of copyright owner]"
*
* Contributor(s):
* If you wish your version of this file to be governed by only the CDDL or
* only the GPL Version 2, indicate your decision by adding "[Contributor]
* elects to include this software in this distribution under the [CDDL or GPL
* Version 2] license." If you don't indicate a single choice of license, a
* recipient has the option to distribute your version of this file under
* either the CDDL, the GPL Version 2 or to extend the choice of license to
* its licensees as provided above. However, if you add GPL Version 2 code
* and therefore, elected the GPL Version 2 license, then the option applies
* only if the new code is made subject to such option by the copyright
* holder.
*/
package javax.faces.event;
import javax.faces.component.UIComponent;
/**
* A {@link ValueChangeEvent} is a notification that the local value of
* the source component has been change as a result of user interface
* activity. It is not fired unless validation of the new value was
* completed successfully.
*/
public class ValueChangeEvent extends FacesEvent {
// ------------------------------------------------------------ Constructors
/**
* Construct a new event object from the specified source component,
* old value, and new value.
*
* The default {@link PhaseId} for this event is {@link
* PhaseId#ANY_PHASE}.
*
* @param component Source {@link UIComponent} for this event
* @param oldValue The previous local value of this {@link UIComponent}
* @param newValue The new local value of thie {@link UIComponent}
*
* @throws IllegalArgumentException if component is
* null
*/
public ValueChangeEvent(UIComponent component,
Object oldValue, Object newValue) {
super(component);
this.oldValue = oldValue;
this.newValue = newValue;
}
// -------------------------------------------------------------- Properties
/**
* The previous local value of the source {@link UIComponent}.
*/
private Object oldValue = null;
/**
* Return the previous local value of the source {@link UIComponent}.
*
*/
public Object getOldValue() {
return (this.oldValue);
}
/**
* The current local value of the source {@link UIComponent}.
*/
private Object newValue = null;
/**
* Return the current local value of the source {@link UIComponent}.
*
*/
public Object getNewValue() {
return (this.newValue);
}
// ------------------------------------------------- Event Broadcast Methods
public boolean isAppropriateListener(FacesListener listener) {
return (listener instanceof ValueChangeListener);
}
/**
* @throws AbortProcessingException {@inheritDoc}
*/
public void processListener(FacesListener listener) {
((ValueChangeListener) listener).processValueChange(this);
}
}