window: Move group to WindowX11

Which means meta_window_get_group now requires a x11 client type,
so ensure we don't call it on a wayland client

Part-of: <https://gitlab.gnome.org/GNOME/mutter/-/merge_requests/3555>

src/core/display.c

@@ -1988,14 +1988,20 @@ in_tab_chain (MetaWindow  *window,
   gboolean in_dock_tab_chain;
   gboolean in_group_tab_chain;
   MetaGroup *focus_group = NULL;
+  MetaGroup *window_group = NULL;
 
   in_normal_tab_chain_type = window->type != META_WINDOW_DOCK && window->type != META_WINDOW_DESKTOP;
   in_normal_tab_chain = meta_window_is_focusable (window) && in_normal_tab_chain_type && !window->skip_taskbar;
   in_dock_tab_chain = meta_window_is_focusable (window) && (!in_normal_tab_chain_type || window->skip_taskbar);
 
-  if (window->display->focus_window)
-    focus_group = window->display->focus_window->group;
-  in_group_tab_chain = meta_window_is_focusable (window) && (!focus_group || meta_window_get_group (window) == focus_group);
+  if (window->display->focus_window &&
+      window->display->focus_window->client_type == META_WINDOW_CLIENT_TYPE_X11)
+    focus_group = meta_window_get_group (window->display->focus_window);
+
+  if (window->client_type == META_WINDOW_CLIENT_TYPE_X11)
+    window_group = meta_window_get_group (window);
+
+  in_group_tab_chain = meta_window_is_focusable (window) && (!focus_group || window_group == focus_group);
 
   return (type == META_TAB_LIST_NORMAL && in_normal_tab_chain)
          || (type == META_TAB_LIST_DOCKS && in_dock_tab_chain)

src/core/window-private.h

@@ -321,9 +321,6 @@ struct _MetaWindow
   /* Managed by delete.c */
   MetaCloseDialog *close_dialog;
 
-  /* maintained by group.c */
-  MetaGroup *group;
-
   GObject *compositor_private;
 
   /* Focused window that is (directly or indirectly) attached to this one */

src/core/window.c

@@ -1453,9 +1453,13 @@ meta_window_unmanage (MetaWindow  *window,
        */
 
       meta_stack_freeze (window->display->stack);
-      group = meta_window_get_group (window);
-      if (group)
-        meta_group_update_layers (group);
+      if (window->client_type == META_WINDOW_CLIENT_TYPE_X11)
+        {
+          group = meta_window_get_group (window);
+          if (group)
+            meta_group_update_layers (group);
+        }
+
       meta_stack_thaw (window->display->stack);
     }
 
@@ -1463,7 +1467,8 @@ meta_window_unmanage (MetaWindow  *window,
 
   /* safe to do this early as group.c won't re-add to the
    * group if window->unmanaging */
-  meta_window_shutdown_group (window);
+  if (window->client_type == META_WINDOW_CLIENT_TYPE_X11)
+    meta_window_shutdown_group (window);
 
   /* If we have the focus, focus some other window.
    * This is done first, so that if the unmap causes
@@ -4458,7 +4463,7 @@ meta_window_get_titlebar_rect (MetaWindow   *window,
 const char*
 meta_window_get_startup_id (MetaWindow *window)
 {
-  if (window->startup_id == NULL)
+  if (window->startup_id == NULL && window->client_type == META_WINDOW_CLIENT_TYPE_X11)
     {
       MetaGroup *group;
 
@@ -6114,10 +6119,13 @@ meta_window_get_default_layer (MetaWindow *window)
 void
 meta_window_update_layer (MetaWindow *window)
 {
-  MetaGroup *group;
+  MetaGroup *group = NULL;
 
   meta_stack_freeze (window->display->stack);
-  group = meta_window_get_group (window);
+
+  if (window->client_type == META_WINDOW_CLIENT_TYPE_X11)
+    group = meta_window_get_group (window);
+
   if (group)
     meta_group_update_layers (group);
   else

src/x11/group.c

@@ -135,10 +135,16 @@ meta_group_unref (MetaGroup *group)
 MetaGroup*
 meta_window_get_group (MetaWindow *window)
 {
+  MetaWindowX11 *window_x11;
+  MetaWindowX11Private *priv;
+
   if (window->unmanaging)
     return NULL;
 
-  return window->group;
+  window_x11 = META_WINDOW_X11 (window);
+  priv = meta_window_x11_get_private (window_x11);
+
+  return priv->group;
 }
 
 void
@@ -148,6 +154,8 @@ meta_window_compute_group (MetaWindow *window)
   MetaWindow *ancestor;
   MetaX11Display *x11_display = window->display->x11_display;
   Window win_leader = meta_window_x11_get_xgroup_leader (window);
+  MetaWindowX11Private *priv =
+    meta_window_x11_get_private (META_WINDOW_X11 (window));
 
   /* use window->xwindow if no window->xgroup_leader */
 
@@ -159,7 +167,7 @@ meta_window_compute_group (MetaWindow *window)
   if (x11_display->groups_by_leader)
     {
       if (ancestor != window)
-        group = ancestor->group;
+        group = meta_window_get_group (ancestor);
       else if (win_leader != None)
         group = g_hash_table_lookup (x11_display->groups_by_leader,
                                      &win_leader);
@@ -173,7 +181,7 @@ meta_window_compute_group (MetaWindow *window)
 
   if (group != NULL)
     {
-      window->group = group;
+      priv->group = group;
       group->refcount += 1;
     }
   else
@@ -190,13 +198,13 @@ meta_window_compute_group (MetaWindow *window)
         group = meta_group_new (x11_display,
                                 meta_window_x11_get_xwindow (window));
 
-      window->group = group;
+      priv->group = group;
     }
 
-  if (!window->group)
+  if (!priv->group)
     return;
 
-  window->group->windows = g_slist_prepend (window->group->windows, window);
+  priv->group->windows = g_slist_prepend (priv->group->windows, window);
 
   meta_topic (META_DEBUG_GROUPS,
               "Adding %s to group with leader 0x%lx",
@@ -206,17 +214,20 @@ meta_window_compute_group (MetaWindow *window)
 static void
 remove_window_from_group (MetaWindow *window)
 {
-  if (window->group != NULL)
+  MetaWindowX11Private *priv =
+    meta_window_x11_get_private (META_WINDOW_X11 (window));
+
+  if (priv->group != NULL)
     {
       meta_topic (META_DEBUG_GROUPS,
                   "Removing %s from group with leader 0x%lx",
-                  window->desc, window->group->group_leader);
+                  window->desc, priv->group->group_leader);
 
-      window->group->windows =
-        g_slist_remove (window->group->windows,
+      priv->group->windows =
+        g_slist_remove (priv->group->windows,
                         window);
-      meta_group_unref (window->group);
-      window->group = NULL;
+      meta_group_unref (priv->group);
+      priv->group = NULL;
     }
 }
 

src/x11/window-x11-private.h

@@ -87,6 +87,9 @@ struct _MetaWindowX11Private
   /* Bypass compositor hints */
   MetaBypassCompositorHint bypass_compositor;
 
+  /* maintained by group.c */
+  MetaGroup *group;
+
   MetaSyncCounter sync_counter;
 };
 

src/x11/window-x11.c

@@ -557,7 +557,7 @@ meta_window_x11_manage (MetaWindow *window)
                                       window);
 
   /* assign the window to its group, or create a new group if needed */
-  window->group = NULL;
+  priv->group = NULL;
   priv->xgroup_leader = None;
   meta_window_compute_group (window);