window: Move grab_on_frame to WindowX11

Part-of: <https://gitlab.gnome.org/GNOME/mutter/-/merge_requests/3584>

src/core/keybindings.c

@@ -1618,10 +1618,10 @@ meta_window_grab_keys (MetaWindow  *window)
 
   if (priv->keys_grabbed)
     {
-      if (window->frame && !window->grab_on_frame)
+      if (window->frame && !priv->grab_on_frame)
         change_window_keygrabs (keys, meta_window_x11_get_xwindow (window), FALSE);
       else if (window->frame == NULL &&
-               window->grab_on_frame)
+               priv->grab_on_frame)
         ; /* continue to regrab on client window */
       else
         return; /* already all good */
@@ -1632,7 +1632,7 @@ meta_window_grab_keys (MetaWindow  *window)
                           TRUE);
 
   priv->keys_grabbed = TRUE;
-  window->grab_on_frame = window->frame != NULL;
+  priv->grab_on_frame = window->frame != NULL;
 }
 
 void
@@ -1650,10 +1650,10 @@ meta_window_ungrab_keys (MetaWindow  *window)
       MetaDisplay *display = window->display;
       MetaKeyBindingManager *keys = &display->key_binding_manager;
 
-      if (window->grab_on_frame &&
+      if (priv->grab_on_frame &&
           window->frame != NULL)
         change_window_keygrabs (keys, window->frame->xwindow, FALSE);
-      else if (!window->grab_on_frame)
+      else if (!priv->grab_on_frame)
         change_window_keygrabs (keys, meta_window_x11_get_xwindow (window), FALSE);
 
       priv->keys_grabbed = FALSE;

src/core/window-private.h

@@ -506,9 +506,6 @@ struct _MetaWindow
   /* Are we in meta_window_new()? */
   guint constructing : 1;
 
-  /* Used by keybindings.c */
-  guint grab_on_frame : 1;    /* grabs are on the frame */
-
   /* Set if the reason for unmanaging the window is that
    * it was withdrawn
    */

src/core/window.c

@@ -1059,7 +1059,6 @@ meta_window_constructed (GObject *object)
   window->placed = ((window->mapped && !window->hidden) || window->override_redirect);
   window->denied_focus_and_not_transient = FALSE;
   window->unmanaging = FALSE;
-  window->grab_on_frame = FALSE;
   window->withdrawn = FALSE;
   window->initial_workspace_set = FALSE;
   window->initial_timestamp_set = FALSE;

src/x11/window-x11-private.h

@@ -94,6 +94,7 @@ struct _MetaWindowX11Private
 
   /* Used by keybindings.c */
   gboolean keys_grabbed;     /* normal keybindings grabbed */
+  gboolean grab_on_frame;    /* grabs are on the frame */
 };
 
 MetaWindowX11Private * meta_window_x11_get_private (MetaWindowX11 *window_x11);

src/x11/window-x11.c

@@ -2088,6 +2088,7 @@ meta_window_x11_constructed (GObject *object)
   priv->xclient_leader = None;
 
   priv->keys_grabbed = FALSE;
+  priv->grab_on_frame = FALSE;
 
   g_signal_connect (window, "notify::decorated",
                     G_CALLBACK (meta_window_x11_update_input_region),