svn commit: r16643 - trunk/src/argouml-app/src/org/argouml: application util/logging

Author: tfmorris
Date: 2009-01-17 20:16:53-0800
New Revision: 16643

Added:
   trunk/src/argouml-app/src/org/argouml/util/logging/AwtExceptionHandler.java   (contents, props changed)
Modified:
   trunk/src/argouml-app/src/org/argouml/application/Main.java

Log:
RESOLVED - issue 5637: Swing / AWT event thread exceptions should be logged 
http://argouml.tigris.org/issues/show_bug.cgi?id=5637

Modified: trunk/src/argouml-app/src/org/argouml/application/Main.java
Url: http://argouml.tigris.org/source/browse/argouml/trunk/src/argouml-app/src/org/argouml/application/Main.java?view=diff&pathrev=16643&r1=16642&r2=16643
==============================================================================
--- trunk/src/argouml-app/src/org/argouml/application/Main.java	(original)
+++ trunk/src/argouml-app/src/org/argouml/application/Main.java	2009-01-17 20:16:53-0800
@@ -1,5 +1,5 @@
 // $Id$
-// Copyright (c) 1996-2008 The Regents of the University of California. All
+// Copyright (c) 1996-2009 The Regents of the University of California. All
 // Rights Reserved. Permission to use, copy, modify, and distribute this
 // software and its documentation without fee, and without a written
 // agreement is hereby granted, provided that the above copyright notice
@@ -87,6 +87,7 @@
 import org.argouml.uml.ui.InitUmlUI;
 import org.argouml.util.ArgoFrame;
 import org.argouml.util.JavaRuntimeUtility;
+import org.argouml.util.logging.AwtExceptionHandler;
 import org.argouml.util.logging.SimpleTimer;
 import org.tigris.gef.util.Util;
 
@@ -148,6 +149,9 @@
             st.mark("arguments");
             parseCommandLine(args);
 
+            // Register our last chance exception handler
+            AwtExceptionHandler.registerExceptionHandler();
+            
             // Get the splash screen up as early as possible
             st.mark("create splash");
             SplashScreen splash = null;

Added: trunk/src/argouml-app/src/org/argouml/util/logging/AwtExceptionHandler.java
Url: http://argouml.tigris.org/source/browse/argouml/trunk/src/argouml-app/src/org/argouml/util/logging/AwtExceptionHandler.java?view=markup&pathrev=16643
==============================================================================
--- (empty file)
+++ trunk/src/argouml-app/src/org/argouml/util/logging/AwtExceptionHandler.java	2009-01-17 20:16:53-0800
@@ -0,0 +1,57 @@
+// $Id$
+// Copyright (c) 2009 The Regents of the University of California. All
+// Rights Reserved. Permission to use, copy, modify, and distribute this
+// software and its documentation without fee, and without a written
+// agreement is hereby granted, provided that the above copyright notice
+// and this paragraph appear in all copies. This software program and
+// documentation are copyrighted by The Regents of the University of
+// California. The software program and documentation are supplied "AS
+// IS", without any accompanying services from The Regents. The Regents
+// does not warrant that the operation of the program will be
+// uninterrupted or error-free. The end-user understands that the program
+// was developed for research purposes and is advised not to rely
+// exclusively on the program for any reason. IN NO EVENT SHALL THE
+// UNIVERSITY OF CALIFORNIA BE LIABLE TO ANY PARTY FOR DIRECT, INDIRECT,
+// SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES, INCLUDING LOST PROFITS,
+// ARISING OUT OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN IF
+// THE UNIVERSITY OF CALIFORNIA HAS BEEN ADVISED OF THE POSSIBILITY OF
+// SUCH DAMAGE. THE UNIVERSITY OF CALIFORNIA SPECIFICALLY DISCLAIMS ANY
+// WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
+// MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. THE SOFTWARE
+// PROVIDED HEREUNDER IS ON AN "AS IS" BASIS, AND THE UNIVERSITY OF
+// CALIFORNIA HAS NO OBLIGATIONS TO PROVIDE MAINTENANCE, SUPPORT,
+// UPDATES, ENHANCEMENTS, OR MODIFICATIONS.
+
+package org.argouml.util.logging;
+
+import org.apache.log4j.Logger;
+
+/**
+ * Last chance exception handler for AWT thread to make sure things get logged.
+ */
+public class AwtExceptionHandler {
+    
+    private static final Logger LOG = 
+        Logger.getLogger(AwtExceptionHandler.class);
+
+    /**
+     * DO NOT CHANGE THIS METHOD SIGNATURE.
+     * @param t the uncaught exception
+     */
+    public void handle(Throwable t) {
+        try {
+            LOG.error("Last chance error handler in AWT thread caught", t);
+        } catch (Throwable t2) {
+            // Ignore any nested exceptions. We don't want infinite loop.
+        }
+    }
+
+    /**
+     * Register our exception handler with AWT.
+     */
+    public static void registerExceptionHandler() {
+        System.setProperty("sun.awt.exception.handler",
+                AwtExceptionHandler.class.getName());
+    }
+}
+

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