From efeaa73779b2ddb3553c8435076753a0e286ce79 Mon Sep 17 00:00:00 2001
From: Reinier Heeres <rwh@rwh.(none)>
Date: Fri, 09 Nov 2007 09:56:43 +0000
Subject: Fix alt-tab and ctrl-alt-tab behavior, #4570

---
(limited to 'shell')

diff --git a/shell/model/homemodel.py b/shell/model/homemodel.py
index 3ad8cdf..d6f6764 100644
--- a/shell/model/homemodel.py
+++ b/shell/model/homemodel.py
@@ -70,20 +70,32 @@ class HomeModel(gobject.GObject):
         screen.connect('active-window-changed',
                        self._active_window_changed_cb)
 
+    def _get_activities_with_window(self):
+        ret = []
+        for i in self._activities:
+            if i.get_window() is not None:
+               ret.append(i)
+        return ret
+
     def get_previous_activity(self):
-        activities = self._get_started_activities()
+        activities = self._get_activities_with_window()
         i = activities.index(self._pending_activity)
-        if i > 0:
+        if len(activities) == 0:
+             return None
+        elif i - 1 >= 0:
             return activities[i - 1]
         else:
-            return activities[0]
+            return activities[len(activities) - 1]
 
     def get_next_activity(self):
-        i = self._activities.index(self._pending_activity)
-        if i < len(self._activities) - 1:
-            return self._activities[i + 1]
+        activities = self._get_activities_with_window()
+        i = activities.index(self._pending_activity)
+        if len(activities) == 0:
+             return None
+        elif i + 1 < len(activities):
+            return activities[i + 1]
         else:
-            return None
+            return activities[0]
 
     def get_pending_activity(self):
         """Returns the activity that would be seen in the Activity zoom level
--
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