[gnome-games] ui: Fix setting fullscreen with shortcuts

[Adrien Plazas <aplazas src gnome org>]

commit 728ec0eba51f1e053ea781c7853e867413d5eace
Author: Adrien Plazas <kekun plazas laposte net>
Date:   Sun Feb 26 21:14:21 2017 +0100

    ui: Fix setting fullscreen with shortcuts
    
    Prevent the window to be set fullscreen when using the shortcuts on a
    game which doesn't support support fullscreen in Games' window.

 src/ui/application-window.vala |    7 ++++---
 1 files changed, 4 insertions(+), 3 deletions(-)
---
diff --git a/src/ui/application-window.vala b/src/ui/application-window.vala
index f62d707..94e579d 100644
--- a/src/ui/application-window.vala
+++ b/src/ui/application-window.vala
@@ -439,19 +439,20 @@ private class Games.ApplicationWindow : Gtk.ApplicationWindow {
                var default_modifiers = Gtk.accelerator_get_default_mod_mask ();
 
                if ((event.keyval == Gdk.Key.f || event.keyval == Gdk.Key.F) &&
-                   (event.state & default_modifiers) == Gdk.ModifierType.CONTROL_MASK) {
+                   (event.state & default_modifiers) == Gdk.ModifierType.CONTROL_MASK &&
+                   display_header_bar.can_fullscreen) {
                        is_fullscreen = !is_fullscreen;
 
                        return true;
                }
 
-               if (event.keyval == Gdk.Key.F11) {
+               if (event.keyval == Gdk.Key.F11 && display_header_bar.can_fullscreen) {
                        is_fullscreen = !is_fullscreen;
 
                        return true;
                }
 
-               if (event.keyval == Gdk.Key.Escape) {
+               if (event.keyval == Gdk.Key.Escape && display_header_bar.can_fullscreen) {
                        is_fullscreen = false;
 
                        return true;