92 lines
3.3 KiB
Java
92 lines
3.3 KiB
Java
/*
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* Copyright (c) 1997, Oracle and/or its affiliates. All rights reserved.
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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*
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* This code is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 only, as
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* published by the Free Software Foundation. Oracle designates this
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* particular file as subject to the "Classpath" exception as provided
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* by Oracle in the LICENSE file that accompanied this code.
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*
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* This code is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* version 2 for more details (a copy is included in the LICENSE file that
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* accompanied this code).
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*
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* You should have received a copy of the GNU General Public License version
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* 2 along with this work; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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*
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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* or visit www.oracle.com if you need additional information or have any
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* questions.
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*/
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/**
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* An EventQueue subclass which adds selective tracing of events as they
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* are posted to an EventQueue. Tracing is globally enabled and disabled
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* by the AWT.TraceEventPosting property in awt.properties. <P>
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*
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* The optional AWT.NoTraceIDs property defines a list of AWTEvent IDs
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* which should not be traced, such as MouseEvent.MOUSE_MOVED or PaintEvents.
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* This list is declared by specifying the decimal value of each event's ID,
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* separated by commas.
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*
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* @author Thomas Ball
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*/
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package sun.awt;
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import java.awt.EventQueue;
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import java.awt.AWTEvent;
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import java.awt.Toolkit;
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import java.util.StringTokenizer;
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public class TracedEventQueue extends EventQueue {
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// Determines whether any event tracing is enabled.
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static boolean trace = false;
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// The list of event IDs to ignore when tracing.
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static int suppressedIDs[] = null;
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static {
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String s = Toolkit.getProperty("AWT.IgnoreEventIDs", "");
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if (s.length() > 0) {
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StringTokenizer st = new StringTokenizer(s, ",");
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int nIDs = st.countTokens();
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suppressedIDs = new int[nIDs];
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for (int i = 0; i < nIDs; i++) {
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String idString = st.nextToken();
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try {
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suppressedIDs[i] = Integer.parseInt(idString);
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} catch (NumberFormatException e) {
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System.err.println("Bad ID listed in AWT.IgnoreEventIDs " +
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"in awt.properties: \"" +
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idString + "\" -- skipped");
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suppressedIDs[i] = 0;
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}
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}
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} else {
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suppressedIDs = new int[0];
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}
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}
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public void postEvent(AWTEvent theEvent) {
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boolean printEvent = true;
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int id = theEvent.getID();
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for (int i = 0; i < suppressedIDs.length; i++) {
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if (id == suppressedIDs[i]) {
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printEvent = false;
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break;
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}
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}
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if (printEvent) {
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System.out.println(Thread.currentThread().getName() +
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": " + theEvent);
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}
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super.postEvent(theEvent);
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}
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}
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