...

src/display.c

@@ -163,6 +163,9 @@ meta_display_open (const char *name)
   display->server_grab_count = 0;
   display->workspaces = NULL;
 
+  display->focus_window = NULL;
+  display->prev_focus_window = NULL;
+  
   /* we have to go ahead and do this so error handlers work */
   all_displays = g_slist_prepend (all_displays, display);
 

src/display.h

@@ -100,6 +100,9 @@ struct _MetaDisplay
    */
   MetaWindow *focus_window;
 
+  /* Previous focus window */
+  MetaWindow *prev_focus_window;
+  
   GList *workspaces;
   
   /*< private-ish >*/

src/keybindings.c

@@ -324,28 +324,34 @@ handle_tab_forward (MetaDisplay *display,
   
   if (display->focus_window != NULL)
     {
-      window = meta_stack_get_above (display->focus_window->screen->stack,
-                                     display->focus_window);
+      window = meta_stack_get_tab_next (display->focus_window->screen->stack,
+                                        display->focus_window,
+                                        FALSE);
     }
 
   if (window == NULL)
-    {
-      if (event_window)
-        window = meta_stack_get_bottom (event_window->screen->stack);
-      else
     {
       MetaScreen *screen;
       
       screen = meta_display_screen_for_root (display,
-                                                 event->xkey.window);
+                                             event->xkey.root);
 
+      /* We get the screen because event_window may be NULL,
+       * in which case we can't use event_window->screen
+       */
       if (screen)
-            window = meta_stack_get_bottom (screen->stack);
+        {
+          window = meta_stack_get_tab_next (screen->stack,
+                                            event_window,
+                                            FALSE);
         }
     }
 
-  if (window && window != display->focus_window)
+  if (window)
+    {
+      meta_window_raise (window);
       meta_window_focus (window, event->xkey.time);
+    }
 }
 
 static void
@@ -362,29 +368,34 @@ handle_tab_backward (MetaDisplay *display,
   
   if (display->focus_window != NULL)
     {
-      window = meta_stack_get_below (display->focus_window->screen->stack,
-                                     display->focus_window);
+      window = meta_stack_get_tab_next (display->focus_window->screen->stack,
+                                        display->focus_window,
+                                        TRUE);
     }
 
-  if (window == NULL)
-    {
-      if (event_window)
-        window = meta_stack_get_top (event_window->screen->stack);
-
   if (window == NULL)
     {
       MetaScreen *screen;
       
       screen = meta_display_screen_for_root (display,
-                                                 event->xkey.window);
+                                             event->xkey.root);
 
+      /* We get the screen because event_window may be NULL,
+       * in which case we can't use event_window->screen
+       */
       if (screen)
-            window = meta_stack_get_top (screen->stack);
+        {
+          window = meta_stack_get_tab_next (screen->stack,
+                                            event_window,
+                                            TRUE);
         }
     }
 
-  if (window && window != display->focus_window)
+  if (window)
+    {
+      meta_window_raise (window);
       meta_window_focus (window, event->xkey.time);
+    }
 }
 
 static void
@@ -399,8 +410,28 @@ handle_focus_previous (MetaDisplay *display,
   
   window = display->prev_focus_window;
 
+  if (window == NULL)
+    {
+      /* Pick first window in tab order */
+      MetaScreen *screen;
+      
+      screen = meta_display_screen_for_root (display,
+                                             event->xkey.root);
+      
+      /* We get the screen because event_window may be NULL,
+       * in which case we can't use event_window->screen
+       */
+      if (screen)
+        {
+          window = meta_stack_get_tab_next (screen->stack,
+                                            event_window,
+                                            TRUE);
+        }
+    }
+  
   if (window)
+    {
+      meta_window_raise (window);
       meta_window_focus (window, event->xkey.time);
+    }
 }
-
-

src/stack.c

@@ -760,3 +760,63 @@ meta_stack_get_below (MetaStack      *stack,
   else
     return find_prev_below_layer (stack, window->layer);
 }
+
+MetaWindow*
+meta_stack_get_tab_next (MetaStack  *stack,
+                         MetaWindow *window,
+                         gboolean    backward)
+{
+  int i;
+
+  if (stack->windows->len == 0)
+    return NULL;
+
+  if (window != NULL)
+    {
+      i = 0;
+      while (i < stack->windows->len)
+        {
+          Window w;
+          
+          w = g_array_index (stack->windows, Window, i);
+
+          if (w == window->xwindow)
+            {
+              if (backward && i == 0)
+                goto out;
+              else if (!backward && i == (stack->windows->len - 1))
+                goto out;
+              else
+                {
+                  if (backward)
+                    --i;
+                  else
+                    ++i;
+              
+                  return meta_display_lookup_x_window (stack->screen->display,
+                                                       g_array_index (stack->windows,
+                                                                      Window,
+                                                                      i));
+                }
+            }
+
+          ++i;
+        }     
+    }
+
+ out:
+  
+  /* window may be NULL, or maybe the origin window was already the last/first
+   * window and we need to wrap around
+   */
+  if (backward)
+    return meta_display_lookup_x_window (stack->screen->display,
+                                         g_array_index (stack->windows,
+                                                        Window,
+                                                        stack->windows->len - 1));
+  else
+    return meta_display_lookup_x_window (stack->screen->display,
+                                         g_array_index (stack->windows,
+                                                        Window,
+                                                        0));
+}

src/stack.h

@@ -92,6 +92,9 @@ MetaWindow* meta_stack_get_above  (MetaStack  *stack,
 MetaWindow* meta_stack_get_below  (MetaStack  *stack,
                                    MetaWindow *window);
 
+MetaWindow* meta_stack_get_tab_next (MetaStack  *stack,
+                                     MetaWindow *window,
+                                     gboolean    backward);
 
 #endif
 

src/window.c

@@ -1618,7 +1618,10 @@ meta_window_notify_focus (MetaWindow *window,
    */
   if (event->xfocus.mode == NotifyGrab ||
       event->xfocus.mode == NotifyUngrab)
+    {
+      meta_verbose ("Ignoring focus event generated by a grab\n");
       return TRUE;
+    }
     
   if (event->type == FocusIn)
     {