[gtk+] wayland: Fallback to setting transient windows if no seat available

[Rob Bradford <rbradford src gnome org>]

commit 7c51d67e7c6ce321616a442e30e29e2d0f731b50
Author: Rob Bradford <rob linux intel com>
Date:   Wed Jul 18 16:16:56 2012 +0100

    wayland: Fallback to setting transient windows if no seat available
    
    If we don't have a wl_seat - because a grab hasn't been initialised by GTK+
    then fallback to making the shell surface transient to the parent rather than
    a popup surface.

 gdk/wayland/gdkwindow-wayland.c |   28 +++++++++++++++-------------
 1 files changed, 15 insertions(+), 13 deletions(-)
---
diff --git a/gdk/wayland/gdkwindow-wayland.c b/gdk/wayland/gdkwindow-wayland.c
index f2b7bf3..fad879e 100644
--- a/gdk/wayland/gdkwindow-wayland.c
+++ b/gdk/wayland/gdkwindow-wayland.c
@@ -633,23 +633,25 @@ gdk_wayland_window_map (GdkWindow *window)
     {
       if (impl->transient_for)
         {
+          struct wl_seat *grab_input_seat = NULL;
+
           parent = GDK_WINDOW_IMPL_WAYLAND (impl->transient_for->impl);
 
-          if (impl->hint == GDK_WINDOW_TYPE_HINT_POPUP_MENU ||
-              impl->hint == GDK_WINDOW_TYPE_HINT_DROPDOWN_MENU ||
-              impl->hint == GDK_WINDOW_TYPE_HINT_COMBO)
-            {
-              struct wl_seat *grab_input_seat = NULL;
+          /* Use the device that was used for the grab as the device for
+           * the popup window setup - so this relies on GTK+ taking the
+           * grab before showing the popup window.
+           */
+          if (impl->grab_input_seat)
+            grab_input_seat = impl->grab_input_seat;
 
-              /* Use the device that was used for the grab as the device for
-               * the popup window setup - so this relies on GTK+ taking the
-               * grab before showing the popup window.
-               */
-              if (impl->grab_input_seat)
-                grab_input_seat = impl->grab_input_seat;
+          if (!grab_input_seat)
+            grab_input_seat = parent->grab_input_seat;
 
-              if (!grab_input_seat)
-                grab_input_seat = parent->grab_input_seat;
+          if (grab_input_seat &&
+              (impl->hint == GDK_WINDOW_TYPE_HINT_POPUP_MENU ||
+               impl->hint == GDK_WINDOW_TYPE_HINT_DROPDOWN_MENU ||
+               impl->hint == GDK_WINDOW_TYPE_HINT_COMBO))
+            {
 
               wl_shell_surface_set_popup (impl->shell_surface,
                                           grab_input_seat,