/*
* Copyright (c) 2005-2016 Vincent Vandenschrick. All rights reserved.
*
* This file is part of the Jspresso framework.
*
* Jspresso is free software: you can redistribute it and/or modify
* it under the terms of the GNU Lesser General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* Jspresso is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with Jspresso. If not, see <http://www.gnu.org/licenses/>.
*/
package org.jspresso.framework.binding;
import java.util.List;
import org.jspresso.framework.util.event.ValueChangeEvent;
/**
* This class is a specific connector value change event for collection
* connectors. It keeps track of the children connectors that were potentially
* removed during the notification process.
*
* @author Vincent Vandenschrick
*/
public class CollectionConnectorValueChangeEvent extends ValueChangeEvent {
private static final long serialVersionUID = 6547764843701088585L;
private final List<IValueConnector> removedChildrenConnectors;
/**
* Constructs a new {@code CollectionConnectorValueChangeEvent} instance.
*
* @param source
* the connector that initiated the event.
* @param oldValue
* the old value of the connector.
* @param newValue
* the new value of the connector.
* @param removedChildrenConnectors
* the children connectors that have just been removed.
*/
public CollectionConnectorValueChangeEvent(IValueConnector source,
Object oldValue, Object newValue,
List<IValueConnector> removedChildrenConnectors) {
super(source, oldValue, newValue);
this.removedChildrenConnectors = removedChildrenConnectors;
}
/**
* Gets the removedChildrenConnectors.
*
* @return the removedChildrenConnectors.
*/
public List<IValueConnector> getRemovedChildrenConnectors() {
return removedChildrenConnectors;
}
/**
* The event needs firing if any connector removal need to be notified even if
* oldValue and newValue are equal.
* <p>
* {@inheritDoc}
*/
@Override
public boolean needsFiring() {
return super.needsFiring()
|| (removedChildrenConnectors != null && !removedChildrenConnectors
.isEmpty());
}
}