app: implemented sync action

Useful when the local calendar differs from the remote calendar (i.e. you added an event at Google Calendar).

data/ui/menus.ui

@@ -32,6 +32,11 @@
         <attribute name="label" translatable="yes">_New Event</attribute>
         <attribute name="action">app.new</attribute>
       </item>
+      <item>
+        <attribute name="label" translatable="yes">_Synchronize</attribute>
+        <attribute name="action">app.sync</attribute>
+        <attribute name="accel">F5</attribute>
+      </item>
     </section>
   </menu>
 </interface>

src/gcal-application.c

@@ -64,6 +64,10 @@ static void     gcal_application_show_about           (GSimpleAction           *
                                                        GVariant                *parameter,
                                                        gpointer                 user_data);
 
+static void     gcal_application_sync                 (GSimpleAction           *sync,
+                                                       GVariant                *parameter,
+                                                       gpointer                 app);
+
 static void     gcal_application_quit                 (GSimpleAction           *simple,
                                                        GVariant                *parameter,
                                                        gpointer                 user_data);
@@ -83,6 +87,7 @@ static GOptionEntry gcal_application_goptions[] = {
 
 static const GActionEntry gcal_app_entries[] = {
   { "new",    gcal_application_create_new_event },
+  { "sync",   gcal_application_sync },
   { "search", gcal_application_launch_search },
   { "about",  gcal_application_show_about },
   { "quit",   gcal_application_quit },
@@ -264,6 +269,18 @@ gcal_application_create_new_event (GSimpleAction *new_event,
   gcal_window_new_event (GCAL_WINDOW (priv->window));
 }
 
+static void
+gcal_application_sync (GSimpleAction *sync,
+                       GVariant      *parameter,
+                       gpointer       app)
+{
+  GcalApplicationPrivate *priv;
+
+  priv = gcal_application_get_instance_private (GCAL_APPLICATION (app));
+
+  gcal_manager_refresh (priv->manager);
+}
+
 static void
 gcal_application_launch_search (GSimpleAction *search,
                                 GVariant      *parameter,

src/gcal-manager.c

@@ -90,6 +90,10 @@ static void     on_client_connected                       (GObject         *sour
                                                            GAsyncResult    *result,
                                                            gpointer         user_data);
 
+static void     on_client_refreshed                       (GObject         *source_object,
+                                                           GAsyncResult    *result,
+                                                           gpointer         user_data);
+
 static void     on_event_updated                         (GObject          *source_object,
                                                           GAsyncResult     *result,
                                                           gpointer          user_data);
@@ -282,6 +286,27 @@ on_client_connected (GObject      *source_object,
     }
 }
 
+
+static void
+on_client_refreshed (GObject      *source_object,
+                     GAsyncResult *result,
+                     gpointer      user_data)
+{
+  GError *error;
+
+  error = NULL;
+  if (e_client_refresh_finish (E_CLIENT (source_object), result, &error))
+    {
+      /* FIXME: add notification to UI */
+      ;
+    }
+  else
+    {
+      /* FIXME: do something when there was some error */
+      g_warning ("Error synchronizing client");
+    }
+}
+
 /**
  * on_component_updated:
  * @source_object: {@link ECalClient} source
@@ -600,6 +625,35 @@ gcal_manager_get_default_source (GcalManager *manager)
   return source_uid;
 }
 
+void
+gcal_manager_refresh (GcalManager *manager)
+{
+  GcalManagerPrivate *priv;
+  GList *clients;
+  GList *l;
+
+  priv = gcal_manager_get_instance_private (manager);
+  clients = g_hash_table_get_values (priv->clients);
+
+  /* refresh clients */
+  for (l = clients; l != NULL; l = l->next)
+    {
+      GcalManagerUnit *unit;
+
+      unit = (GcalManagerUnit*) l->data;
+
+      if (! e_client_check_refresh_supported (E_CLIENT (unit->client)))
+        continue;
+
+      e_client_refresh (E_CLIENT (unit->client),
+                        NULL,
+                        on_client_refreshed,
+                        manager);
+    }
+
+  g_list_free (clients);
+}
+
 gboolean
 gcal_manager_is_client_writable (GcalManager *manager,
                                  ESource     *source)

src/gcal-manager.h

@@ -81,6 +81,8 @@ gchar*         gcal_manager_add_source              (GcalManager        *manager
 
 gchar*         gcal_manager_get_default_source      (GcalManager        *manager);
 
+void           gcal_manager_refresh                 (GcalManager        *manager);
+
 gboolean       gcal_manager_is_client_writable      (GcalManager        *manager,
                                                      ESource            *source);