[rygel-grilo] Handle "updated" signal in client side

[Juan A. Suarez Romero <jasuarez src gnome org>]

commit 0b4a2c6ffc8b3404d3b5d98455024efef0c68abc
Author: Juan A. Suarez Romero <jasuarez igalia com>
Date:   Wed Apr 21 12:31:01 2010 +0200

    Handle "updated" signal in client side

 lib/media-server2-client.c |   57 ++++++++++++++++++++++++++++++++++++++++++++
 lib/media-server2-client.h |    3 ++
 2 files changed, 60 insertions(+), 0 deletions(-)
---
diff --git a/lib/media-server2-client.c b/lib/media-server2-client.c
index 66264cd..0992335 100644
--- a/lib/media-server2-client.c
+++ b/lib/media-server2-client.c
@@ -46,6 +46,11 @@
 #define MS2_CLIENT_GET_PRIVATE(o)                                       \
   G_TYPE_INSTANCE_GET_PRIVATE((o), MS2_TYPE_CLIENT, MS2ClientPrivate)
 
+enum {
+  UPDATED,
+  LAST_SIGNAL
+};
+
 /*
  * AsyncData: used to pack needed data when dealing with async functions
  *   properties_result: when using get_properties_async() functions, it will
@@ -72,10 +77,21 @@ struct _MS2ClientPrivate {
   DBusGProxy *proxy_provider;
 };
 
+static guint32 signals[LAST_SIGNAL] = { 0 };
+
 G_DEFINE_TYPE (MS2Client, ms2_client, G_TYPE_OBJECT);
 
 /******************** PRIVATE API ********************/
 
+/* Callback invoked when "Updated" dbus signal is received */
+static void
+updated (DBusGProxy *proxy,
+         const gchar *id,
+         MS2Client *client)
+{
+  g_signal_emit (client, signals[UPDATED], 0, id);
+}
+
 /* Free gvalue */
 static void
 free_gvalue (GValue *v)
@@ -186,11 +202,47 @@ get_children_async_reply (DBusGProxy *proxy,
   g_object_unref (res);
 }
 
+/* Dispose function */
+static void
+ms2_client_dispose (GObject *object)
+{
+  MS2Client *client = MS2_CLIENT (object);
+
+  if (client->priv->proxy_provider) {
+    g_object_unref (client->priv->proxy_provider);
+    client->priv->proxy_provider = NULL;
+  }
+
+  G_OBJECT_CLASS (ms2_client_parent_class)->dispose (object);
+}
+
 /* Class init function */
 static void
 ms2_client_class_init (MS2ClientClass *klass)
 {
+  GObjectClass *gobject_class = G_OBJECT_CLASS (klass);
+
   g_type_class_add_private (klass, sizeof (MS2ClientPrivate));
+
+  gobject_class->dispose = ms2_client_dispose;
+
+  /**
+   * MS2Client::updated:
+   * @client: a #MS2Client
+   * @id: identifier of item that has changed
+   *
+   * Notifies when an item in provider has changed.
+   **/
+  signals[UPDATED] = g_signal_new ("updated",
+                                   G_TYPE_FROM_CLASS (klass),
+                                   G_SIGNAL_RUN_FIRST | G_SIGNAL_NO_RECURSE,
+                                   G_STRUCT_OFFSET (MS2ClientClass, updated),
+                                   NULL,
+                                   NULL,
+                                   g_cclosure_marshal_VOID__STRING,
+                                   G_TYPE_NONE,
+                                   1,
+                                   G_TYPE_STRING);
 }
 
 /* Object init function */
@@ -321,6 +373,11 @@ MS2Client *ms2_client_new (const gchar *provider)
   client = g_object_new (MS2_TYPE_CLIENT, NULL);
   client->priv->proxy_provider = gproxy;
 
+  /* Listen to "updated" signal */
+  dbus_g_proxy_add_signal (gproxy, "Updated", G_TYPE_STRING, G_TYPE_INVALID);
+  g_return_val_if_fail (MS2_IS_CLIENT(client), NULL);
+  dbus_g_proxy_connect_signal (gproxy, "Updated", G_CALLBACK (updated), client, NULL);
+
   return client;
 }
 
diff --git a/lib/media-server2-client.h b/lib/media-server2-client.h
index 792d57b..adeb623 100644
--- a/lib/media-server2-client.h
+++ b/lib/media-server2-client.h
@@ -71,6 +71,9 @@ typedef struct _MS2ClientClass MS2ClientClass;
 struct _MS2ClientClass {
 
   GObjectClass parent_class;
+
+  void (*updated) (MS2Client *client,
+                   const gchar *id);
 };
 
 GType ms2_client_get_type (void);