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| 1 | +/* | |
| 2 | + * Copyright (c) 1997, Oracle and/or its affiliates. All rights reserved. | |
| 3 | + * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. | |
| 4 | + * | |
| 5 | + * This code is free software; you can redistribute it and/or modify it | |
| 6 | + * under the terms of the GNU General Public License version 2 only, as | |
| 7 | + * published by the Free Software Foundation. Oracle designates this | |
| 8 | + * particular file as subject to the "Classpath" exception as provided | |
| 9 | + * by Oracle in the LICENSE file that accompanied this code. | |
| 10 | + * | |
| 11 | + * This code is distributed in the hope that it will be useful, but WITHOUT | |
| 12 | + * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
| 13 | + * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
| 14 | + * version 2 for more details (a copy is included in the LICENSE file that | |
| 15 | + * accompanied this code). | |
| 16 | + * | |
| 17 | + * You should have received a copy of the GNU General Public License version | |
| 18 | + * 2 along with this work; if not, write to the Free Software Foundation, | |
| 19 | + * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. | |
| 20 | + * | |
| 21 | + * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA | |
| 22 | + * or visit www.oracle.com if you need additional information or have any | |
| 23 | + * questions. | |
| 24 | + */ | |
| 25 | + | |
| 26 | +/** | |
| 27 | + * An EventQueue subclass which adds selective tracing of events as they | |
| 28 | + * are posted to an EventQueue. Tracing is globally enabled and disabled | |
| 29 | + * by the AWT.TraceEventPosting property in awt.properties. <P> | |
| 30 | + * | |
| 31 | + * The optional AWT.NoTraceIDs property defines a list of AWTEvent IDs | |
| 32 | + * which should not be traced, such as MouseEvent.MOUSE_MOVED or PaintEvents. | |
| 33 | + * This list is declared by specifying the decimal value of each event's ID, | |
| 34 | + * separated by commas. | |
| 35 | + * | |
| 36 | + * @author Thomas Ball | |
| 37 | + */ | |
| 38 | + | |
| 39 | +package sun.awt; | |
| 40 | + | |
| 41 | +import java.awt.EventQueue; | |
| 42 | +import java.awt.AWTEvent; | |
| 43 | +import java.awt.Toolkit; | |
| 44 | +import java.util.StringTokenizer; | |
| 45 | + | |
| 46 | +public class TracedEventQueue extends EventQueue { | |
| 47 | + | |
| 48 | + // Determines whether any event tracing is enabled. | |
| 49 | + static boolean trace = false; | |
| 50 | + | |
| 51 | + // The list of event IDs to ignore when tracing. | |
| 52 | + static int suppressedIDs[] = null; | |
| 53 | + | |
| 54 | + static { | |
| 55 | + String s = Toolkit.getProperty("AWT.IgnoreEventIDs", ""); | |
| 56 | + if (s.length() > 0) { | |
| 57 | + StringTokenizer st = new StringTokenizer(s, ","); | |
| 58 | + int nIDs = st.countTokens(); | |
| 59 | + suppressedIDs = new int[nIDs]; | |
| 60 | + for (int i = 0; i < nIDs; i++) { | |
| 61 | + String idString = st.nextToken(); | |
| 62 | + try { | |
| 63 | + suppressedIDs[i] = Integer.parseInt(idString); | |
| 64 | + } catch (NumberFormatException e) { | |
| 65 | + System.err.println("Bad ID listed in AWT.IgnoreEventIDs " + | |
| 66 | + "in awt.properties: \"" + | |
| 67 | + idString + "\" -- skipped"); | |
| 68 | + suppressedIDs[i] = 0; | |
| 69 | + } | |
| 70 | + } | |
| 71 | + } else { | |
| 72 | + suppressedIDs = new int[0]; | |
| 73 | + } | |
| 74 | + } | |
| 75 | + | |
| 76 | + public void postEvent(AWTEvent theEvent) { | |
| 77 | + boolean printEvent = true; | |
| 78 | + int id = theEvent.getID(); | |
| 79 | + for (int i = 0; i < suppressedIDs.length; i++) { | |
| 80 | + if (id == suppressedIDs[i]) { | |
| 81 | + printEvent = false; | |
| 82 | + break; | |
| 83 | + } | |
| 84 | + } | |
| 85 | + if (printEvent) { | |
| 86 | + System.out.println(Thread.currentThread().getName() + | |
| 87 | + ": " + theEvent); | |
| 88 | + } | |
| 89 | + super.postEvent(theEvent); | |
| 90 | + } | |
| 91 | +} | |