/*
This file belongs to the Servoy development and deployment environment, Copyright (C) 1997-2012 Servoy BV
This program is free software; you can redistribute it and/or modify it under
the terms of the GNU Affero General Public License as published by the Free
Software Foundation; either version 3 of the License, or (at your option) any
later version.
This program 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 Affero General Public License for more details.
You should have received a copy of the GNU Affero General Public License along
with this program; if not, see http://www.gnu.org/licenses or write to the Free
Software Foundation,Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301
*/
package com.servoy.j2db.dataprocessing;
import javax.swing.event.ListDataEvent;
import javax.swing.event.ListDataListener;
/**
* Will update the value of a display when receiving any change event.
* Refactored. Moved out of DataLookupField so that it can be reused for WebDataLookupField as well.
* @author jcompagner
* @author acostescu
*/
public class LookupListChangeListener implements ListDataListener
{
protected final IDisplayData display;
public LookupListChangeListener(IDisplayData display)
{
this.display = display;
}
protected void changed()
{
Object value = display.getValueObject();
if (value != null)
{
boolean needEntireState = display.needEntireState();
display.setNeedEntireState(false);
try
{
display.setValueObject(null);
display.setValueObject(value);
}
finally
{
display.setNeedEntireState(needEntireState);
}
}
}
public void intervalAdded(ListDataEvent e)
{
changed();
}
public void intervalRemoved(ListDataEvent e)
{
changed();
}
public void contentsChanged(ListDataEvent e)
{
changed();
}
}