/*
* JMule - Java file sharing client
* Copyright (C) 2007-2008 JMule team ( jmule@jmule.org / http://jmule.org )
*
* Any parts of this program derived from other projects, or contributed
* by third-party developers are copyrighted by their respective authors.
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version 2
* 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 General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*
*/
package org.jmule.ui.swt;
import java.util.List;
import java.util.concurrent.CopyOnWriteArrayList;
import org.jmule.core.JMRunnable;
import org.jmule.core.JMThread;
/**
*
* @author binary256
* @version $$Revision: 1.2 $$
* Last changed by $$Author: binary256_ $$ on $$Date: 2008/09/07 16:30:25 $$
*/
public class GUIUpdater extends JMThread {
private static GUIUpdater instance = null;
public static GUIUpdater getInstance() {
if (instance==null)
instance = new GUIUpdater();
return instance;
}
private boolean stop = false;
private List<Refreshable> refreshable_list = new CopyOnWriteArrayList<Refreshable>();
private GUIUpdater() {
super("GUI updater thread");
}
public void JMStop() {
stop = true;
interrupt();
}
public void addRefreshable(Refreshable refreshable) {
if (refreshable_list.contains(refreshable)) return;
refreshable_list.add(refreshable);
}
public void removeRefreshable(Refreshable refreshable) {
if (refreshable_list.contains(refreshable))
refreshable_list.remove(refreshable);
}
protected boolean process_refreshables = false;
public void run() {
process_refreshables = false;
while(!stop) {
try {
Thread.sleep(SWTConstants.GUI_UPDATE_INTERVAL);
} catch (InterruptedException e) {
if (stop) return ;
}
if (!process_refreshables) {
SWTThread.getDisplay().syncExec(new JMRunnable() {
public void JMRun() {
process_refreshables = true;
for(Refreshable refreshable : refreshable_list) {
try {
refreshable.refresh();
}catch(Throwable t) {
t.printStackTrace();
}
}
process_refreshables = false;
}
}); }
}
}
}