wayland/gtk-shell: Handle requests after toplevel was unmanaged

As with xdg-toplevel, a gtk-surface can be unmanaged by the compositor
without the client knowing about it, meaning the client may still send
updates and make requests. Handle this gracefully by ignoring them. The
client needs to reset all the state anyway, if it wants to remap the
same surface.

https://gitlab.gnome.org/GNOME/mutter/issues/240
(cherry picked from commit ca5b27baf517f00354ff8811ba204fd90f1ddb38)

1 files changed, 19 insertions, 10 deletions

diff --git a/src/wayland/meta-wayland-gtk-shell.c b/src/wayland/meta-wayland-gtk-shell.c
index 891109a69..58375674a 100644
--- a/src/wayland/meta-wayland-gtk-shell.c
+++ b/src/wayland/meta-wayland-gtk-shell.c
@@ -71,15 +71,13 @@ gtk_surface_set_dbus_properties (struct wl_client   *client,
 {
   MetaWaylandGtkSurface *gtk_surface = wl_resource_get_user_data (resource);
   MetaWaylandSurface *surface = gtk_surface->surface;
+  MetaWindow *window;
 
-  /* Broken client, let it die instead of us */
-  if (!surface->window)
-    {
-      meta_warning ("meta-wayland-surface: set_dbus_properties called with invalid window!\n");
-      return;
-    }
+  window = surface->window;
+  if (!window)
+    return;
 
-  meta_window_set_gtk_dbus_properties (surface->window,
+  meta_window_set_gtk_dbus_properties (window,
                                        application_id,
                                        unique_bus_name,
                                        app_menu_path,
@@ -94,12 +92,17 @@ gtk_surface_set_modal (struct wl_client   *client,
 {
   MetaWaylandGtkSurface *gtk_surface = wl_resource_get_user_data (resource);
   MetaWaylandSurface *surface = gtk_surface->surface;
+  MetaWindow *window;
+
+  window = surface->window;
+  if (!window)
+    return;
 
   if (gtk_surface->is_modal)
     return;
 
   gtk_surface->is_modal = TRUE;
-  meta_window_set_type (surface->window, META_WINDOW_MODAL_DIALOG);
+  meta_window_set_type (window, META_WINDOW_MODAL_DIALOG);
 }
 
 static void
@@ -108,12 +111,17 @@ gtk_surface_unset_modal (struct wl_client   *client,
 {
   MetaWaylandGtkSurface *gtk_surface = wl_resource_get_user_data (resource);
   MetaWaylandSurface *surface = gtk_surface->surface;
+  MetaWindow *window;
+
+  window = surface->window;
+  if (!window)
+    return;
 
   if (!gtk_surface->is_modal)
     return;
 
   gtk_surface->is_modal = FALSE;
-  meta_window_set_type (surface->window, META_WINDOW_NORMAL);
+  meta_window_set_type (window, META_WINDOW_NORMAL);
 }
 
 static void
@@ -123,8 +131,9 @@ gtk_surface_present (struct wl_client   *client,
 {
   MetaWaylandGtkSurface *gtk_surface = wl_resource_get_user_data (resource);
   MetaWaylandSurface *surface = gtk_surface->surface;
-  MetaWindow *window = surface->window;
+  MetaWindow *window;
 
+  window = surface->window;
   if (!window)
     return;