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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* Copyright 2008 by Sun Microsystems, Inc.
*
* OpenOffice.org - a multi-platform office productivity suite
*
* $RCSfile: ResourceViewer.java,v $
* $Revision: 1.3 $
*
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Lesser General Public License version 3 for more details
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package com.sun.star.lib.sandbox;
import java.applet.Applet;
import java.awt.BorderLayout;
import java.awt.Button;
import java.awt.Frame;
import java.awt.Graphics;
import java.awt.List;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.util.Enumeration;
import java.util.Observable;
import java.util.Observer;
public class ResourceViewer extends Frame implements Observer {
List list;
boolean refill;
public ResourceViewer() {
super("ResourceViewer");
list = new List();
setLayout(new BorderLayout());
add("Center", list);
Button clearCashButton = new Button("clear the cache");
clearCashButton.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent actionEvent) {
WeakTable.clear();
}
});
add("South", clearCashButton);
setSize(500, 200);
refill = true;
WeakTable.AddObserver(this);
setVisible(true);
}
void refresh() {
list.removeAll();
Enumeration elements = WeakTable.elements();
while(elements.hasMoreElements()) {
WeakRef weakRef = ((WeakEntry)elements.nextElement()).weakRef;
list.add(weakRef.getRefCount() + " " + weakRef.getKey().toString());
}
}
public void update(Observable observable, Object arg) {
refill = true;
repaint(500);
}
public void paint(Graphics g) {
if(refill) {
refill = false;
refresh();
}
super.paint(g);
}
}