Keybindings: uniquify the name for non-builtin keybindings

Multiple settings objects could have the same key, so that alone
is not enough to identify the binding. Add also the pointer value
of the GSettings object.

https://bugzilla.gnome.org/show_bug.cgi?id=613543

src/core/display.c

@@ -1961,9 +1961,6 @@ event_callback (XEvent   *event,
     {
     case KeyPress:
     case KeyRelease:
-      if (display->grab_op == META_GRAB_OP_COMPOSITOR)
-        break;
-
       /* For key events, it's important to enforce single-handling, or
        * we can get into a confused state. So if a keybinding is
        * handled (because it's one of our hot-keys, or because we are

src/core/keybindings-private.h

@@ -75,6 +75,8 @@ void     meta_display_process_mapping_event (MetaDisplay *display,
 
 gboolean meta_prefs_add_keybinding          (const char           *name,
                                              GSettings            *settings,
+                                             const char           *setting_key,
+                                             const char           *hardcoded_key,
                                              MetaKeyBindingAction  action,
                                              MetaKeyBindingFlags   flags);
 

src/core/keybindings.c

@@ -99,12 +99,12 @@ meta_key_binding_get_mask (MetaKeyBinding *binding)
  * handler functions and have some kind of flag to say they're unbindable.
  */
 
-static void handle_workspace_switch  (MetaDisplay    *display,
+static gboolean handle_workspace_switch  (MetaDisplay    *display,
-                                      MetaScreen     *screen,
+                                          MetaScreen     *screen,
-                                      MetaWindow     *window,
+                                          MetaWindow     *window,
-                                      XEvent         *event,
+                                          XEvent         *event,
-                                      MetaKeyBinding *binding,
+                                          MetaKeyBinding *binding,
-                                      gpointer        dummy);
+                                          gpointer        dummy);
 
 static gboolean process_mouse_move_resize_grab (MetaDisplay *display,
                                                 MetaScreen  *screen,
@@ -539,6 +539,8 @@ static gboolean
 add_keybinding_internal (MetaDisplay          *display,
                          const char           *name,
                          GSettings            *settings,
+                         const char           *setting_key,
+                         const char           *hardcoded_key,
                          MetaKeyBindingFlags   flags,
                          MetaKeyBindingAction  action,
                          MetaKeyHandlerFunc    func,
@@ -548,7 +550,7 @@ add_keybinding_internal (MetaDisplay          *display,
 {
   MetaKeyHandler *handler;
 
-  if (!meta_prefs_add_keybinding (name, settings, action, flags))
+  if (!meta_prefs_add_keybinding (name, settings, setting_key, hardcoded_key, action, flags))
     return FALSE;
 
   handler = g_new0 (MetaKeyHandler, 1);
@@ -567,16 +569,20 @@ add_keybinding_internal (MetaDisplay          *display,
 
 static gboolean
 add_builtin_keybinding (MetaDisplay          *display,
-                        const char           *name,
+                        const char           *key,
                         GSettings            *settings,
                         MetaKeyBindingFlags   flags,
                         MetaKeyBindingAction  action,
                         MetaKeyHandlerFunc    handler,
                         int                   handler_arg)
 {
-  return add_keybinding_internal (display, name, settings,
+  char *name = g_strdup_printf ("internal-keybinding-%s", key);
+
+  return add_keybinding_internal (display, name, settings, key, NULL,
                                   flags | META_KEY_BINDING_BUILTIN,
                                   action, handler, handler_arg, NULL, NULL);
+
+  g_free (name);
 }
 
 /**
@@ -608,22 +614,74 @@ add_builtin_keybinding (MetaDisplay          *display,
  */
 gboolean
 meta_display_add_keybinding (MetaDisplay         *display,
-                             const char          *name,
+                             const char          *key,
                              GSettings           *settings,
                              MetaKeyBindingFlags  flags,
                              MetaKeyHandlerFunc   handler,
                              gpointer             user_data,
                              GDestroyNotify       free_data)
 {
-  return add_keybinding_internal (display, name, settings, flags,
+  char *name = g_strdup_printf("custom-keybinding-%p-%s", settings, key);
-                                  META_KEYBINDING_ACTION_NONE,
+
+  return add_keybinding_internal (display, name, settings, key, NULL,
+                                  flags, META_KEYBINDING_ACTION_NONE,
                                   handler, 0, user_data, free_data);
+
+  g_free (name);
+}
+
+/**
+ * meta_display_add_grabbed_key:
+ * @display: a #MetaDisplay
+ * @name: the binding's name
+ * @keyval: the key combination that should trigger this keybinding
+ * @flags: flags to specify binding details
+ * @handler: function to run when the keybinding is invoked
+ * @user_data: the data to pass to @handler
+ * @free_data: function to free @user_data
+ *
+ * This function is similar to meta_display_add_keybinding(), except
+ * that the keybinding is hardcoded to @keyval, which should be a GTK
+ * key string combination.
+ */
+gboolean
+meta_display_add_grabbed_key (MetaDisplay         *display,
+                              const char          *name,
+                              const char          *keyval,
+                              MetaKeyBindingFlags  flags,
+                              MetaKeyHandlerFunc   handler,
+                              gpointer             user_data,
+                              GDestroyNotify       free_data)
+{
+  return add_keybinding_internal (display, name, NULL, NULL, keyval,
+                                  flags, META_KEYBINDING_ACTION_NONE,
+                                  handler, 0, user_data, free_data);
+}
+
+/**
+ * meta_display_remove_grabbed_key:
+ * @display: the #MetaDisplay
+ * @name: the name that was passed to meta_display_add_grabbed_key()
+ *
+ * Undoes the effect of meta_display_add_grabbed_key()
+ */
+gboolean
+meta_display_remove_grabbed_key (MetaDisplay *display,
+                                 const char  *name)
+{
+  if (!meta_prefs_remove_keybinding (name))
+    return FALSE;
+
+  g_hash_table_remove (key_handlers, name);
+
+  return TRUE;
 }
 
 /**
  * meta_display_remove_keybinding:
  * @display: the #MetaDisplay
  * @name: name of the keybinding to remove
+ * @settings: (allow-none): the #GSettings object on which the keybinding is registered
  *
  * Remove keybinding @name; the function will fail if @name is not a known
  * keybinding or has not been added with meta_display_add_keybinding().
@@ -633,14 +691,28 @@ meta_display_add_keybinding (MetaDisplay         *display,
  */
 gboolean
 meta_display_remove_keybinding (MetaDisplay *display,
-                                const char  *name)
+                                const char  *key,
+                                GSettings   *settings)
 {
+  gboolean retval;
+  char *name;
+
+  if (settings)
+    name = g_strdup_printf ("custom-keybinding-%p-%s", settings, key);
+  else
+    name = g_strdup (key);
+
+  retval = FALSE;
   if (!meta_prefs_remove_keybinding (name))
-    return FALSE;
+    goto out;
 
   g_hash_table_remove (key_handlers, name);
 
-  return TRUE;
+  retval = TRUE;
+
+ out:
+  g_free (name);
+  return retval;
 }
 
 /**
@@ -1344,7 +1416,7 @@ primary_modifier_still_pressed (MetaDisplay *display,
     return TRUE;
 }
 
-static void
+static gboolean
 invoke_handler (MetaDisplay    *display,
                 MetaScreen     *screen,
                 MetaKeyHandler *handler,
@@ -1354,22 +1426,22 @@ invoke_handler (MetaDisplay    *display,
 
 {
   if (handler->func)
-    (* handler->func) (display, screen,
+    return (* handler->func) (display, screen,
-                       handler->flags & META_KEY_BINDING_PER_WINDOW ?
+                              handler->flags & META_KEY_BINDING_PER_WINDOW ?
-                           window : NULL,
+                              window : NULL,
-                       event,
+                              event,
-                       binding,
+                              binding,
-                       handler->user_data);
+                              handler->user_data);
   else
-    (* handler->default_func) (display, screen,
+    return (* handler->default_func) (display, screen,
-                               handler->flags & META_KEY_BINDING_PER_WINDOW ?
+                                      handler->flags & META_KEY_BINDING_PER_WINDOW ?
-                                   window: NULL,
+                                      window: NULL,
-                               event,
+                                      event,
-                               binding,
+                                      binding,
-                               NULL);
+                                      NULL);
 }
 
-static void
+static gboolean
 invoke_handler_by_name (MetaDisplay    *display,
                         MetaScreen     *screen,
                         const char     *handler_name,
@@ -1380,7 +1452,8 @@ invoke_handler_by_name (MetaDisplay    *display,
 
   handler = HANDLER (handler_name);
   if (handler)
-    invoke_handler (display, screen, handler, window, event, NULL);
+    return invoke_handler (display, screen, handler, window, event, NULL);
+  return FALSE;
 }
 
 /* now called from only one place, may be worth merging */
@@ -1415,6 +1488,10 @@ process_event (MetaKeyBinding       *bindings,
            bindings[i].mask))
         continue;
 
+      if (display->grab_op != META_GRAB_OP_NONE &&
+          (handler->flags & META_KEY_BINDING_HANDLE_WHEN_GRABBED) == 0)
+        continue;
+
       /*
        * window must be non-NULL for on_window to be true,
        * and so also window must be non-NULL if we get here and
@@ -1439,9 +1516,7 @@ process_event (MetaKeyBinding       *bindings,
        */
       display->allow_terminal_deactivation = TRUE;
 
-      invoke_handler (display, screen, handler, window, event, &bindings[i]);
+      return invoke_handler (display, screen, handler, window, event, &bindings[i]);
-
-      return TRUE;
     }
 
   meta_topic (META_DEBUG_KEYBINDINGS,
@@ -1665,6 +1740,11 @@ meta_display_process_key_event (MetaDisplay *display,
               keep_grab = process_workspace_switch_grab (display, screen, event, keysym);
               break;
 
+            case META_GRAB_OP_COMPOSITOR:
+              /* Compositor grabs don't go through meta_display_begin_grab_op(),
+                 so all_keys_grabbed is always false for them */
+              g_assert_not_reached ();
+ 
             default:
               break;
             }
@@ -2550,7 +2630,7 @@ process_tab_grab (MetaDisplay *display,
   return key_used;
 }
 
-static void
+static gboolean
 handle_switch_to_workspace (MetaDisplay    *display,
                            MetaScreen     *screen,
                            MetaWindow     *event_window,
@@ -2575,7 +2655,7 @@ handle_switch_to_workspace (MetaDisplay    *display,
        */
       handle_workspace_switch (display, screen, event_window, event, binding,
                                dummy);
-      return;
+      return TRUE;
     }
 
   workspace = meta_screen_get_workspace_by_index (screen, which);
@@ -2588,10 +2668,12 @@ handle_switch_to_workspace (MetaDisplay    *display,
     {
       /* We could offer to create it I suppose */
     }
+
+  return TRUE;
 }
 
 
-static void
+static gboolean
 handle_maximize_vertically (MetaDisplay    *display,
                       MetaScreen     *screen,
                       MetaWindow     *window,
@@ -2606,9 +2688,11 @@ handle_maximize_vertically (MetaDisplay    *display,
       else
         meta_window_maximize (window, META_MAXIMIZE_VERTICAL);
     }
+
+  return TRUE;
 }
 
-static void
+static gboolean
 handle_maximize_horizontally (MetaDisplay    *display,
                        MetaScreen     *screen,
                        MetaWindow     *window,
@@ -2623,6 +2707,8 @@ handle_maximize_horizontally (MetaDisplay    *display,
       else
         meta_window_maximize (window, META_MAXIMIZE_HORIZONTAL);
     }
+
+  return TRUE;
 }
 
 /* Move a window to a corner; to_bottom/to_right are FALSE for the
@@ -2672,7 +2758,7 @@ handle_move_to_corner_backend (MetaDisplay    *display,
                           new_y);
 }
 
-static void
+static gboolean
 handle_move_to_corner_nw  (MetaDisplay    *display,
                            MetaScreen     *screen,
                            MetaWindow     *window,
@@ -2681,9 +2767,10 @@ handle_move_to_corner_nw  (MetaDisplay    *display,
                            gpointer        dummy)
 {
   handle_move_to_corner_backend (display, screen, window, TRUE, TRUE, FALSE, FALSE, dummy);
+  return TRUE;
 }
 
-static void
+static gboolean
 handle_move_to_corner_ne  (MetaDisplay    *display,
                            MetaScreen     *screen,
                            MetaWindow     *window,
@@ -2692,9 +2779,10 @@ handle_move_to_corner_ne  (MetaDisplay    *display,
                            gpointer        dummy)
 {
   handle_move_to_corner_backend (display, screen, window, TRUE, TRUE, TRUE, FALSE, dummy);
+  return TRUE;
 }
 
-static void
+static gboolean
 handle_move_to_corner_sw  (MetaDisplay    *display,
                            MetaScreen     *screen,
                            MetaWindow     *window,
@@ -2703,9 +2791,10 @@ handle_move_to_corner_sw  (MetaDisplay    *display,
                            gpointer        dummy)
 {
   handle_move_to_corner_backend (display, screen, window, TRUE, TRUE, FALSE, TRUE, dummy);
+  return TRUE;
 }
 
-static void
+static gboolean
 handle_move_to_corner_se  (MetaDisplay    *display,
                            MetaScreen     *screen,
                            MetaWindow     *window,
@@ -2714,9 +2803,10 @@ handle_move_to_corner_se  (MetaDisplay    *display,
                            gpointer        dummy)
 {
   handle_move_to_corner_backend (display, screen, window, TRUE, TRUE, TRUE, TRUE, dummy);
+  return TRUE;
 }
 
-static void
+static gboolean
 handle_move_to_side_n     (MetaDisplay    *display,
                            MetaScreen     *screen,
                            MetaWindow     *window,
@@ -2725,9 +2815,10 @@ handle_move_to_side_n     (MetaDisplay    *display,
                            gpointer        dummy)
 {
   handle_move_to_corner_backend (display, screen, window, FALSE, TRUE, FALSE, FALSE, dummy);
+  return TRUE;
 }
 
-static void
+static gboolean
 handle_move_to_side_s     (MetaDisplay    *display,
                            MetaScreen     *screen,
                            MetaWindow     *window,
@@ -2736,9 +2827,10 @@ handle_move_to_side_s     (MetaDisplay    *display,
                            gpointer        dummy)
 {
   handle_move_to_corner_backend (display, screen, window, FALSE, TRUE, FALSE, TRUE, dummy);
+  return TRUE;
 }
 
-static void
+static gboolean
 handle_move_to_side_e     (MetaDisplay    *display,
                            MetaScreen     *screen,
                            MetaWindow     *window,
@@ -2747,9 +2839,10 @@ handle_move_to_side_e     (MetaDisplay    *display,
                            gpointer        dummy)
 {
   handle_move_to_corner_backend (display, screen, window, TRUE, FALSE, TRUE, FALSE, dummy);
+  return TRUE;
 }
 
-static void
+static gboolean
 handle_move_to_side_w     (MetaDisplay    *display,
                            MetaScreen     *screen,
                            MetaWindow     *window,
@@ -2758,9 +2851,10 @@ handle_move_to_side_w     (MetaDisplay    *display,
                            gpointer        dummy)
 {
   handle_move_to_corner_backend (display, screen, window, TRUE, FALSE, FALSE, FALSE, dummy);
+  return TRUE;
 }
 
-static void
+static gboolean
 handle_move_to_center  (MetaDisplay    *display,
                         MetaScreen     *screen,
                         MetaWindow     *window,
@@ -2786,6 +2880,8 @@ handle_move_to_center  (MetaDisplay    *display,
           work_area.y + (work_area.height+frame_height-outer.height)/2,
           window->rect.width,
           window->rect.height);
+
+  return FALSE;
 }
 
 static gboolean
@@ -2902,7 +2998,7 @@ process_workspace_switch_grab (MetaDisplay *display,
   return FALSE;
 }
 
-static void
+static gboolean
 handle_show_desktop (MetaDisplay    *display,
                        MetaScreen     *screen,
                        MetaWindow     *window,
@@ -2919,9 +3015,11 @@ handle_show_desktop (MetaDisplay    *display,
     }
   else
     meta_screen_show_desktop (screen, event->xkey.time);
+
+  return TRUE;
 }
 
-static void
+static gboolean
 handle_panel (MetaDisplay    *display,
                          MetaScreen     *screen,
                          MetaWindow     *window,
@@ -2944,7 +3042,7 @@ handle_panel (MetaDisplay    *display,
       action_atom = display->atom__GNOME_PANEL_ACTION_RUN_DIALOG;
       break;
     default:
-      return;
+      return FALSE;
     }
    
   ev.type = ClientMessage;
@@ -2971,9 +3069,11 @@ handle_panel (MetaDisplay    *display,
 	      (XEvent*) &ev);
 
   meta_error_trap_pop (display);
+
+  return TRUE;
 }
 
-static void
+static gboolean
 handle_activate_window_menu (MetaDisplay    *display,
                       MetaScreen     *screen,
                       MetaWindow     *event_window,
@@ -2996,6 +3096,8 @@ handle_activate_window_menu (MetaDisplay    *display,
                              0,
                              event->xkey.time);
     }
+
+  return TRUE;
 }
 
 static MetaGrabOp
@@ -3142,7 +3244,7 @@ do_choose_window (MetaDisplay    *display,
     }
 }
 
-static void
+static gboolean
 handle_switch (MetaDisplay    *display,
                     MetaScreen     *screen,
                     MetaWindow     *event_window,
@@ -3154,9 +3256,10 @@ handle_switch (MetaDisplay    *display,
 
   do_choose_window (display, screen, event_window, event, binding,
                     backwards, TRUE);
+  return TRUE;
 }
 
-static void
+static gboolean
 handle_cycle (MetaDisplay    *display,
                     MetaScreen     *screen,
                     MetaWindow     *event_window,
@@ -3168,9 +3271,10 @@ handle_cycle (MetaDisplay    *display,
 
   do_choose_window (display, screen, event_window, event, binding,
                     backwards, FALSE);
+  return TRUE;
 }
 
-static void
+static gboolean
 handle_tab_popup_select (MetaDisplay    *display,
                          MetaScreen     *screen,
                          MetaWindow     *window,
@@ -3179,9 +3283,10 @@ handle_tab_popup_select (MetaDisplay    *display,
                          gpointer        dummy)
 {
   /* Stub for custom handlers; no default implementation */
+  return FALSE;
 }
 
-static void
+static gboolean
 handle_tab_popup_cancel (MetaDisplay    *display,
                          MetaScreen     *screen,
                          MetaWindow     *window,
@@ -3190,9 +3295,10 @@ handle_tab_popup_cancel (MetaDisplay    *display,
                          gpointer        dummy)
 {
   /* Stub for custom handlers; no default implementation */
+  return FALSE;
 }
 
-static void
+static gboolean
 handle_toggle_fullscreen  (MetaDisplay    *display,
                            MetaScreen     *screen,
                            MetaWindow     *window,
@@ -3204,9 +3310,11 @@ handle_toggle_fullscreen  (MetaDisplay    *display,
     meta_window_unmake_fullscreen (window);
   else if (window->has_fullscreen_func)
     meta_window_make_fullscreen (window);
+
+  return TRUE;
 }
 
-static void
+static gboolean
 handle_toggle_above       (MetaDisplay    *display,
                            MetaScreen     *screen,
                            MetaWindow     *window,
@@ -3218,9 +3326,11 @@ handle_toggle_above       (MetaDisplay    *display,
     meta_window_unmake_above (window);
   else
     meta_window_make_above (window);
+
+  return TRUE;
 }
 
-static void
+static gboolean
 handle_toggle_tiled (MetaDisplay    *display,
                      MetaScreen     *screen,
                      MetaWindow     *window,
@@ -3258,9 +3368,11 @@ handle_toggle_tiled (MetaDisplay    *display,
       window->maximized_horizontally = FALSE;
       meta_window_tile (window);
     }
+
+  return TRUE;
 }
 
-static void
+static gboolean
 handle_toggle_maximized    (MetaDisplay    *display,
                            MetaScreen     *screen,
                            MetaWindow     *window,
@@ -3276,9 +3388,11 @@ handle_toggle_maximized    (MetaDisplay    *display,
     meta_window_maximize (window,
                           META_MAXIMIZE_HORIZONTAL |
                           META_MAXIMIZE_VERTICAL);
+
+  return TRUE;
 }
 
-static void
+static gboolean
 handle_maximize           (MetaDisplay    *display,
                            MetaScreen     *screen,
                            MetaWindow     *window,
@@ -3290,9 +3404,11 @@ handle_maximize           (MetaDisplay    *display,
     meta_window_maximize (window,
                           META_MAXIMIZE_HORIZONTAL |
                           META_MAXIMIZE_VERTICAL);
+
+  return TRUE;
 }
 
-static void
+static gboolean
 handle_unmaximize         (MetaDisplay    *display,
                            MetaScreen     *screen,
                            MetaWindow     *window,
@@ -3304,9 +3420,11 @@ handle_unmaximize         (MetaDisplay    *display,
     meta_window_unmaximize (window,
                             META_MAXIMIZE_HORIZONTAL |
                             META_MAXIMIZE_VERTICAL);
+
+  return TRUE;
 }
 
-static void
+static gboolean
 handle_toggle_shaded      (MetaDisplay    *display,
                            MetaScreen     *screen,
                            MetaWindow     *window,
@@ -3318,9 +3436,11 @@ handle_toggle_shaded      (MetaDisplay    *display,
     meta_window_unshade (window, event->xkey.time);
   else if (window->has_shade_func)
     meta_window_shade (window, event->xkey.time);
+
+  return TRUE;
 }
 
-static void
+static gboolean
 handle_close              (MetaDisplay    *display,
                            MetaScreen     *screen,
                            MetaWindow     *window,
@@ -3330,9 +3450,11 @@ handle_close              (MetaDisplay    *display,
 {
   if (window->has_close_func)
     meta_window_delete (window, event->xkey.time);
+
+  return TRUE;
 }
 
-static void
+static gboolean
 handle_minimize        (MetaDisplay    *display,
                         MetaScreen     *screen,
                         MetaWindow     *window,
@@ -3342,9 +3464,11 @@ handle_minimize        (MetaDisplay    *display,
 {
   if (window->has_minimize_func)
     meta_window_minimize (window);
+
+  return TRUE;
 }
 
-static void
+static gboolean
 handle_begin_move         (MetaDisplay    *display,
                            MetaScreen     *screen,
                            MetaWindow     *window,
@@ -3359,9 +3483,11 @@ handle_begin_move         (MetaDisplay    *display,
                                  FALSE,
                                  event->xkey.time);
     }
+
+  return TRUE;
 }
 
-static void
+static gboolean
 handle_begin_resize       (MetaDisplay    *display,
                            MetaScreen     *screen,
                            MetaWindow     *window,
@@ -3376,9 +3502,11 @@ handle_begin_resize       (MetaDisplay    *display,
                                  FALSE,
                                  event->xkey.time);
     }
+
+  return TRUE;
 }
 
-static void
+static gboolean
 handle_toggle_on_all_workspaces (MetaDisplay    *display,
                            MetaScreen     *screen,
                            MetaWindow     *window,
@@ -3390,13 +3518,15 @@ handle_toggle_on_all_workspaces (MetaDisplay    *display,
     meta_window_unstick (window);
   else
     meta_window_stick (window);
+
+  return TRUE;
 }
 
-static void
+static gboolean
 handle_move_to_workspace  (MetaDisplay    *display,
-                              MetaScreen     *screen,
+                           MetaScreen     *screen,
-                              MetaWindow     *window,
+                           MetaWindow     *window,
-                              XEvent         *event,
+                           XEvent         *event,
                            MetaKeyBinding *binding,
                            gpointer        dummy)
 {
@@ -3413,7 +3543,7 @@ handle_move_to_workspace  (MetaDisplay    *display,
    */
 
   if (window->always_sticky)
-    return;
+    return FALSE;
 
   workspace = NULL;
   if (flip)
@@ -3445,9 +3575,11 @@ handle_move_to_workspace  (MetaDisplay    *display,
     {
       /* We could offer to create it I suppose */
     }
+
+  return TRUE;
 }
 
-static void 
+static gboolean
 handle_raise_or_lower (MetaDisplay    *display,
                        MetaScreen     *screen,
 		       MetaWindow     *window,
@@ -3463,7 +3595,7 @@ handle_raise_or_lower (MetaDisplay    *display,
   if (meta_stack_get_top (window->screen->stack) == window)
     {
       meta_window_lower (window);
-      return;
+      return TRUE;
     }
       
   /* else check if windows in same layer are intersecting it */
@@ -3483,7 +3615,7 @@ handle_raise_or_lower (MetaDisplay    *display,
           if (meta_rectangle_intersect (&win_rect, &above_rect, &tmp))
             {
               meta_window_raise (window);
-              return;
+              return TRUE;
             }
         }
 	  
@@ -3492,9 +3624,10 @@ handle_raise_or_lower (MetaDisplay    *display,
 
   /* window is not obscured */
   meta_window_lower (window);
+  return TRUE;
 }
 
-static void
+static gboolean
 handle_raise (MetaDisplay    *display,
               MetaScreen     *screen,
               MetaWindow     *window,
@@ -3503,9 +3636,11 @@ handle_raise (MetaDisplay    *display,
               gpointer        dummy)
 {
   meta_window_raise (window);
+
+  return TRUE;
 }
 
-static void
+static gboolean
 handle_lower (MetaDisplay    *display,
               MetaScreen     *screen,
               MetaWindow     *window,
@@ -3514,9 +3649,11 @@ handle_lower (MetaDisplay    *display,
               gpointer        dummy)
 {
   meta_window_lower (window);
+
+  return TRUE;
 }
 
-static void
+static gboolean
 handle_workspace_switch  (MetaDisplay    *display,
                           MetaScreen     *screen,
                           MetaWindow     *window,
@@ -3547,7 +3684,7 @@ handle_workspace_switch  (MetaDisplay    *display,
                                    grab_mask,
                                    event->xkey.time,
                                    0, 0))
-    return;
+    return FALSE;
 
   next = meta_workspace_get_neighbor (screen->active_workspace, motion);
   g_assert (next); 
@@ -3570,17 +3707,21 @@ handle_workspace_switch  (MetaDisplay    *display,
 
   if (grabbed_before_release && !meta_prefs_get_no_tab_popup ())
     meta_screen_workspace_popup_create (screen, next);
+
+  return TRUE;
 }
 
-static void
+static gboolean
 handle_set_spew_mark (MetaDisplay    *display,
-                  MetaScreen     *screen,
+                      MetaScreen     *screen,
-                  MetaWindow     *window,
+                      MetaWindow     *window,
-                  XEvent         *event,
+                      XEvent         *event,
                       MetaKeyBinding *binding,
                       gpointer        dummy)
 {
   meta_verbose ("-- MARK MARK MARK MARK --\n");
+
+  return TRUE;
 }
 
 void
@@ -3726,28 +3867,28 @@ init_builtin_key_bindings (MetaDisplay *display)
   add_builtin_keybinding (display,
                           "switch-to-workspace-left",
                           common_keybindings,
-                          META_KEY_BINDING_NONE,
+                          META_KEY_BINDING_HANDLE_WHEN_GRABBED,
                           META_KEYBINDING_ACTION_WORKSPACE_LEFT,
                           handle_switch_to_workspace, META_MOTION_LEFT);
 
   add_builtin_keybinding (display,
                           "switch-to-workspace-right",
                           common_keybindings,
-                          META_KEY_BINDING_NONE,
+                          META_KEY_BINDING_HANDLE_WHEN_GRABBED,
                           META_KEYBINDING_ACTION_WORKSPACE_RIGHT,
                           handle_switch_to_workspace, META_MOTION_RIGHT);
 
   add_builtin_keybinding (display,
                           "switch-to-workspace-up",
                           common_keybindings,
-                          META_KEY_BINDING_NONE,
+                          META_KEY_BINDING_HANDLE_WHEN_GRABBED,
                           META_KEYBINDING_ACTION_WORKSPACE_UP,
                           handle_switch_to_workspace, META_MOTION_UP);
 
   add_builtin_keybinding (display,
                           "switch-to-workspace-down",
                           common_keybindings,
-                          META_KEY_BINDING_NONE,
+                          META_KEY_BINDING_HANDLE_WHEN_GRABBED,
                           META_KEYBINDING_ACTION_WORKSPACE_DOWN,
                           handle_switch_to_workspace, META_MOTION_DOWN);
 
@@ -3793,14 +3934,14 @@ init_builtin_key_bindings (MetaDisplay *display)
   add_builtin_keybinding (display,
                           "switch-panels",
                           common_keybindings,
-                          META_KEY_BINDING_REVERSES,
+                          META_KEY_BINDING_REVERSES | META_KEY_BINDING_HANDLE_WHEN_GRABBED,
                           META_KEYBINDING_ACTION_SWITCH_PANELS,
                           handle_switch, META_TAB_LIST_DOCKS);
 
   add_builtin_keybinding (display,
                           "switch-panels-backward",
                           common_keybindings,
-                          REVERSES_AND_REVERSED,
+                          REVERSES_AND_REVERSED | META_KEY_BINDING_HANDLE_WHEN_GRABBED,
                           META_KEYBINDING_ACTION_SWITCH_PANELS_BACKWARD,
                           handle_switch, META_TAB_LIST_DOCKS);
 
@@ -3878,14 +4019,14 @@ init_builtin_key_bindings (MetaDisplay *display)
   add_builtin_keybinding (display,
                           "panel-main-menu",
                           common_keybindings,
-                          META_KEY_BINDING_NONE,
+                          META_KEY_BINDING_HANDLE_WHEN_GRABBED,
                           META_KEYBINDING_ACTION_PANEL_MAIN_MENU,
                           handle_panel, META_KEYBINDING_ACTION_PANEL_MAIN_MENU);
 
   add_builtin_keybinding (display,
                           "panel-run-dialog",
                           common_keybindings,
-                          META_KEY_BINDING_NONE,
+                          META_KEY_BINDING_HANDLE_WHEN_GRABBED,
                           META_KEYBINDING_ACTION_PANEL_RUN_DIALOG,
                           handle_panel, META_KEYBINDING_ACTION_PANEL_RUN_DIALOG);
 

src/core/prefs.c

@@ -110,13 +110,12 @@ static gboolean workspaces_only_on_primary = FALSE;
 
 static gboolean no_tab_popup = FALSE;
 
+static GHashTable *key_bindings;
 
 static void handle_preference_update_enum (GSettings *settings,
                                            gchar     *key);
 static gboolean update_binding         (MetaKeyPref *binding,
                                         gchar      **strokes);
-static gboolean update_key_binding     (const char  *key,
-                                        gchar      **strokes);
 static gboolean update_workspace_names (void);
 
 static void settings_changed (GSettings      *settings,
@@ -1052,13 +1051,30 @@ bindings_changed (GSettings *settings,
                   gchar *key,
                   gpointer data)
 {
+  gchar  *static_strokes[2];
   gchar **strokes;
-  strokes = g_settings_get_strv (settings, key);
+  MetaKeyPref *pref;
 
-  if (update_key_binding (key, strokes))
+  pref = g_hash_table_lookup (key_bindings, key);
-    queue_changed (META_PREF_KEYBINDINGS);
+  if (!pref)
+    return;
 
-  g_strfreev (strokes);
+  if (pref->is_single)
+    {
+      static_strokes[0] = g_settings_get_string (settings, key);
+      static_strokes[1] = NULL;
+      strokes = static_strokes;
+    }
+  else
+    strokes = g_settings_get_strv (settings, key);
+
+  update_binding (pref, strokes);
+  queue_changed (META_PREF_KEYBINDINGS);
+
+  if (strokes != static_strokes)
+    g_strfreev(strokes);
+  else
+    g_free(static_strokes[0]);
 }
 
 /**
@@ -1693,7 +1709,10 @@ meta_key_pref_free (MetaKeyPref *pref)
   update_binding (pref, NULL);
 
   g_free (pref->name);
-  g_object_unref (pref->settings);
+  if (pref->settings)
+    g_object_unref (pref->settings);
+  g_free (pref->setting_key);
+  g_free (pref->hardcoded_key);
 
   g_free (pref);
 }
@@ -1785,18 +1804,6 @@ update_binding (MetaKeyPref *binding,
   return changed;
 }
 
-static gboolean
-update_key_binding (const char *key,
-                    gchar     **strokes)
-{
-  MetaKeyPref *pref = g_hash_table_lookup (key_bindings, key);
-
-  if (pref)
-    return update_binding (pref, strokes);
-  else
-    return FALSE;
-}
-
 static gboolean
 update_workspace_names (void)
 {
@@ -1929,11 +1936,14 @@ meta_prefs_get_visual_bell_type (void)
 gboolean
 meta_prefs_add_keybinding (const char           *name,
                            GSettings            *settings,
+                           const char           *setting_key,
+                           const char           *hardcoded_key,
                            MetaKeyBindingAction  action,
                            MetaKeyBindingFlags   flags)
 {
   MetaKeyPref  *pref;
   char        **strokes;
+  char         *static_strokes[2];
   guint         id;
 
   if (g_hash_table_lookup (key_bindings, name))
@@ -1944,19 +1954,45 @@ meta_prefs_add_keybinding (const char           *name,
 
   pref = g_new0 (MetaKeyPref, 1);
   pref->name = g_strdup (name);
-  pref->settings = g_object_ref (settings);
+  pref->settings = settings ? g_object_ref (settings) : NULL;
+  pref->setting_key = g_strdup (setting_key);
+  pref->hardcoded_key = g_strdup (hardcoded_key);
   pref->action = action;
   pref->bindings = NULL;
   pref->add_shift = (flags & META_KEY_BINDING_REVERSES) != 0;
   pref->per_window = (flags & META_KEY_BINDING_PER_WINDOW) != 0;
   pref->builtin = (flags & META_KEY_BINDING_BUILTIN) != 0;
+  pref->is_single = (flags & META_KEY_BINDING_IS_SINGLE) != 0;
+
+  if (settings)
+    {
+      if (pref->is_single)
+        {
+          static_strokes[0] = g_settings_get_string (settings, setting_key);
+          static_strokes[1] = NULL;
+          strokes = static_strokes;
+        }
+      else
+        strokes = g_settings_get_strv (settings, setting_key);
+    }
+  else
+    {
+      static_strokes[0] = (char*)hardcoded_key;
+      static_strokes[1] = NULL;
+      strokes = static_strokes;
+    }
 
-  strokes = g_settings_get_strv (settings, name);
   update_binding (pref, strokes);
-  g_strfreev (strokes);
-
   g_hash_table_insert (key_bindings, g_strdup (name), pref);
 
+  if (strokes != static_strokes)
+    g_strfreev (strokes);
+  else if (static_strokes[0] != hardcoded_key)
+    g_free (static_strokes[0]);
+
+  if (!settings)
+    return TRUE;
+
   if (pref->builtin)
     {
       if (g_object_get_data (G_OBJECT (settings), "changed-signal") == NULL)
@@ -1968,7 +2004,7 @@ meta_prefs_add_keybinding (const char           *name,
     }
   else
     {
-      char *changed_signal = g_strdup_printf ("changed::%s", name);
+      char *changed_signal = g_strdup_printf ("changed::%s", setting_key);
       id = g_signal_connect (settings, changed_signal,
                              G_CALLBACK (bindings_changed), NULL);
       g_free (changed_signal);

src/meta/display.h

@@ -134,8 +134,18 @@ gboolean meta_display_add_keybinding    (MetaDisplay         *display,
                                          MetaKeyHandlerFunc   handler,
                                          gpointer             user_data,
                                          GDestroyNotify       free_data);
-gboolean meta_display_remove_keybinding (MetaDisplay         *display,
+gboolean meta_display_add_grabbed_key   (MetaDisplay         *display,
+                                         const char          *name,
+                                         const char          *keyval,
+                                         MetaKeyBindingFlags  flags,
+                                         MetaKeyHandlerFunc   handler,
+                                         gpointer             user_data,
+                                         GDestroyNotify       free_data);
+gboolean meta_display_remove_grabbed_key(MetaDisplay         *display,
                                          const char          *name);
+gboolean meta_display_remove_keybinding (MetaDisplay         *display,
+                                         const char          *name,
+                                         GSettings           *settings);
 
 MetaKeyBindingAction meta_display_get_keybinding_action (MetaDisplay  *display,
                                                          unsigned int  keycode,

src/meta/prefs.h

@@ -234,7 +234,9 @@ typedef enum
   META_KEY_BINDING_PER_WINDOW  = 1 << 0,
   META_KEY_BINDING_BUILTIN     = 1 << 1,
   META_KEY_BINDING_REVERSES    = 1 << 2,
-  META_KEY_BINDING_IS_REVERSED = 1 << 3
+  META_KEY_BINDING_IS_REVERSED = 1 << 3,
+  META_KEY_BINDING_IS_SINGLE   = 1 << 4,
+  META_KEY_BINDING_HANDLE_WHEN_GRABBED = 1 << 5,
 } MetaKeyBindingFlags;
 
 typedef struct
@@ -249,12 +251,12 @@ typedef struct
  * @event: (type gpointer):
  *
  */
-typedef void (* MetaKeyHandlerFunc) (MetaDisplay    *display,
+typedef gboolean (* MetaKeyHandlerFunc) (MetaDisplay    *display,
-                                     MetaScreen     *screen,
+                                         MetaScreen     *screen,
-                                     MetaWindow     *window,
+                                         MetaWindow     *window,
-                                     XEvent         *event,
+                                         XEvent         *event,
-                                     MetaKeyBinding *binding,
+                                         MetaKeyBinding *binding,
-                                     gpointer        user_data);
+                                         gpointer        user_data);
 
 typedef struct _MetaKeyHandler MetaKeyHandler;
 
@@ -262,6 +264,8 @@ typedef struct
 {
   char *name;
   GSettings *settings;
+  char *setting_key;
+  char *hardcoded_key;
 
   MetaKeyBindingAction action;
 
@@ -280,6 +284,10 @@ typedef struct
 
   /** for keybindings not added with meta_display_add_keybinding() */
   gboolean      builtin:1;
+
+  /** for keybindings that are stored as a single value, not
+      as a list */
+  gboolean      is_single:1;
 } MetaKeyPref;
 
 GType meta_key_binding_get_type    (void);