self.c.write(' GList *l;\n'
' GVariantBuilder builder;\n'
' GVariantBuilder invalidated_builder;\n'
+ ' guint num_changes;\n'
' g_variant_builder_init (&builder, G_VARIANT_TYPE ("a{sv}"));\n'
' g_variant_builder_init (&invalidated_builder, G_VARIANT_TYPE ("as"));\n'
- ' for (l = skeleton->priv->changed_properties; l != NULL; l = l->next)\n'
+ ' for (l = skeleton->priv->changed_properties, num_changes = 0; l != NULL; l = l->next)\n'
' {\n'
' ChangedProperty *cp = l->data;\n'
' GVariant *variant;\n'
' variant = g_dbus_gvalue_to_gvariant (cur_value, G_VARIANT_TYPE (cp->info->parent_struct.signature));\n'
' g_variant_builder_add (&builder, "{sv}", cp->info->parent_struct.name, variant);\n'
' g_variant_unref (variant);\n'
+ ' num_changes++;\n'
' }\n'
' }\n'
- ' g_dbus_connection_emit_signal (g_dbus_interface_skeleton_get_connection (G_DBUS_INTERFACE_SKELETON (skeleton)),\n'
- ' NULL, g_dbus_interface_skeleton_get_object_path (G_DBUS_INTERFACE_SKELETON (skeleton)),\n'
- ' "org.freedesktop.DBus.Properties",\n'
- ' "PropertiesChanged",\n'
- ' g_variant_new ("(sa{sv}as)",\n'
- ' "%s",\n'
- ' &builder, &invalidated_builder),\n'
- ' NULL);\n'
+ ' if (num_changes > 0)\n'
+ ' {\n'
+ ' g_dbus_connection_emit_signal (g_dbus_interface_skeleton_get_connection (G_DBUS_INTERFACE_SKELETON (skeleton)),\n'
+ ' NULL, g_dbus_interface_skeleton_get_object_path (G_DBUS_INTERFACE_SKELETON (skeleton)),\n'
+ ' "org.freedesktop.DBus.Properties",\n'
+ ' "PropertiesChanged",\n'
+ ' g_variant_new ("(sa{sv}as)",\n'
+ ' "%s",\n'
+ ' &builder, &invalidated_builder),\n'
+ ' NULL);\n'
+ ' }\n'
+ ' else\n'
+ ' {\n'
+ ' g_variant_builder_clear (&builder);\n'
+ ' g_variant_builder_clear (&invalidated_builder);\n'
+ ' }\n'
%(i.name))
self.c.write(' g_list_foreach (skeleton->priv->changed_properties, (GFunc) _changed_property_free, NULL);\n')
self.c.write(' g_list_free (skeleton->priv->changed_properties);\n')