[orca] Do not process object events from 'dead' apps.

[Joanmarie Diggs <joanied src gnome org>]

commit ab8023fc851aaf5cec905cd327c4b3123e808235
Author: Joanmarie Diggs <jdiggs igalia com>
Date:   Wed Apr 4 15:17:13 2012 -0400

    Do not process object events from 'dead' apps.

 src/orca/event_manager.py |    7 +++++++
 1 files changed, 7 insertions(+), 0 deletions(-)
---
diff --git a/src/orca/event_manager.py b/src/orca/event_manager.py
index 4263bc4..be8e675 100644
--- a/src/orca/event_manager.py
+++ b/src/orca/event_manager.py
@@ -393,6 +393,10 @@ class EventManager:
         script = None
         try:
             app = event.host_application or event.source.getApplication()
+            if app.getState().contains(pyatspi.STATE_DEFUNCT):
+                msg = 'WARNING: App is defunct. Cannot get script for event.'
+                debug.println(debug.LEVEL_WARNING, msg)
+                return None
         except:
             debug.printException(debug.LEVEL_WARNING)
         else:
@@ -518,6 +522,9 @@ class EventManager:
             debug.printDetails(debug.LEVEL_FINEST, "    ", event.source)
 
         script = self._getScriptForEvent(event)
+        if not script:
+            return
+
         debug.println(debug.LEVEL_FINEST, "Script for event: %s" % script.name)
         setNewActiveScript, reason = self._isActivatableEvent(event, script)
         if setNewActiveScript: