/*
* Copyright (c) 1997, Oracle and/or its affiliates. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 only, as
* published by the Free Software Foundation. Oracle designates this
* particular file as subject to the "Classpath" exception as provided
* by Oracle in the LICENSE file that accompanied this code.
*
* This code 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
* version 2 for more details (a copy is included in the LICENSE file that
* accompanied this code).
*
* You should have received a copy of the GNU General Public License version
* 2 along with this work; if not, write to the Free Software Foundation,
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
*
* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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*/
/**
* An EventQueue subclass which adds selective tracing of events as they
* are posted to an EventQueue. Tracing is globally enabled and disabled
* by the AWT.TraceEventPosting property in awt.properties. <P>
*
* The optional AWT.NoTraceIDs property defines a list of AWTEvent IDs
* which should not be traced, such as MouseEvent.MOUSE_MOVED or PaintEvents.
* This list is declared by specifying the decimal value of each event's ID,
* separated by commas.
*
* @author Thomas Ball
*/
package sun.awt;
import java.awt.EventQueue;
import java.awt.AWTEvent;
import java.awt.Toolkit;
import java.util.StringTokenizer;
public class TracedEventQueue extends EventQueue {
// Determines whether any event tracing is enabled.
static boolean trace = false;
// The list of event IDs to ignore when tracing.
static int suppressedIDs[] = null;
static {
String s = Toolkit.getProperty("AWT.IgnoreEventIDs", "");
if (s.length() > 0) {
StringTokenizer st = new StringTokenizer(s, ",");
int nIDs = st.countTokens();
suppressedIDs = new int[nIDs];
for (int i = 0; i < nIDs; i++) {
String idString = st.nextToken();
try {
suppressedIDs[i] = Integer.parseInt(idString);
} catch (NumberFormatException e) {
System.err.println("Bad ID listed in AWT.IgnoreEventIDs " +
"in awt.properties: \"" +
idString + "\" -- skipped");
suppressedIDs[i] = 0;
}
}
} else {
suppressedIDs = new int[0];
}
}
public void postEvent(AWTEvent theEvent) {
boolean printEvent = true;
int id = theEvent.getID();
for (int i = 0; i < suppressedIDs.length; i++) {
if (id == suppressedIDs[i]) {
printEvent = false;
break;
}
}
if (printEvent) {
System.out.println(Thread.currentThread().getName() +
": " + theEvent);
}
super.postEvent(theEvent);
}
}