clutter: Add ClutterBackend IM setter/getter

The input method will be global to Clutter, these methods allow setting
one up.

clutter/clutter/clutter-backend-private.h

@@ -58,6 +58,8 @@ struct _ClutterBackend
   gint32 units_serial;
 
   GList *event_translators;
+
+  ClutterInputMethod *input_method;
 };
 
 struct _ClutterBackendClass

clutter/clutter/clutter-backend.c

@@ -127,6 +127,7 @@ clutter_backend_finalize (GObject *gobject)
 
   g_free (backend->font_name);
   clutter_backend_set_font_options (backend, NULL);
+  g_clear_object (&backend->input_method);
 
   G_OBJECT_CLASS (clutter_backend_parent_class)->finalize (gobject);
 }
@@ -1373,3 +1374,31 @@ clutter_backend_bell_notify (ClutterBackend *backend)
   if (klass->bell_notify)
     klass->bell_notify (backend);
 }
+
+/**
+ * clutter_backend_get_input_method:
+ * @backend: the #CLutterBackend
+ *
+ * Returns the input method used by Clutter
+ *
+ * Returns: (transfer none): the input method
+ **/
+ClutterInputMethod *
+clutter_backend_get_input_method (ClutterBackend *backend)
+{
+  return backend->input_method;
+}
+
+/**
+ * clutter_backend_set_input_method:
+ * @backend: the #ClutterBackend
+ * @method: the input method
+ *
+ * Sets the input method to be used by Clutter
+ **/
+void
+clutter_backend_set_input_method (ClutterBackend     *backend,
+                                  ClutterInputMethod *method)
+{
+  g_set_object (&backend->input_method, method);
+}

clutter/clutter/clutter-backend.h

@@ -77,6 +77,12 @@ CoglContext *                   clutter_backend_get_cogl_context        (Clutter
 CLUTTER_AVAILABLE_IN_ALL
 void                            clutter_backend_bell_notify             (ClutterBackend             *backend);
 
+CLUTTER_AVAILABLE_IN_MUTTER
+ClutterInputMethod *            clutter_backend_get_input_method        (ClutterBackend             *backend);
+
+CLUTTER_AVAILABLE_IN_MUTTER
+void                            clutter_backend_set_input_method        (ClutterBackend             *backend,
+                                                                         ClutterInputMethod         *method);
 G_END_DECLS
 
 #endif /* __CLUTTER_BACKEND_H__ */