/**
* Copyright 2010 JBoss Inc
*
* Licensed 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.
*/
/*
* JBoss, the OpenSource J2EE webOS
*
* Distributable under LGPL license.
* See terms of license at gnu.org.
*/
package org.drools.examples.sudoku.swing;
import javax.swing.event.EventListenerList;
public abstract class AbstractSudokuGridModel
{
private EventListenerList listenerList = new EventListenerList();
public void addSudokuGridListener(SudokuGridListener l)
{
listenerList.add(SudokuGridListener.class, l);
}
public void removeSudokuGridListener(SudokuGridListener l)
{
listenerList.remove(SudokuGridListener.class, l);
}
// Notify all listeners that have registered interest for
// notification on this event type. The event instance
// is lazily created using the parameters passed into
// the fire method.
protected void fireCellResolvedEvent(SudokuGridEvent ev)
{
// Guaranteed to return a non-null array
Object[] listeners = listenerList.getListenerList();
// Process the listeners last to first, notifying
// those that are interested in this event
for (int i = listeners.length - 2; i >= 0; i -= 2)
{
if (listeners[i] == SudokuGridListener.class)
{
((SudokuGridListener) listeners[i + 1]).cellResolved(ev);
}
}
}
protected void fireCellUpdatedEvent(SudokuGridEvent ev)
{
// Guaranteed to return a non-null array
Object[] listeners = listenerList.getListenerList();
// Process the listeners last to first, notifying
// those that are interested in this event
for (int i = listeners.length - 2; i >= 0; i -= 2)
{
if (listeners[i] == SudokuGridListener.class)
{
((SudokuGridListener) listeners[i + 1]).cellModified(ev);
}
}
}
}