[rygel] mediathek: Add change tracking

[Jens Georg <jensgeorg src gnome org>]

commit 09f2648ad8457c721fbdb6b316a310e99443abe9
Author: Jens Georg <jensg openismus com>
Date:   Mon Oct 29 15:07:57 2012 +0100

    mediathek: Add change tracking

 src/plugins/mediathek/rygel-mediathek-plugin.vala  |    5 ++++-
 .../mediathek/rygel-mediathek-root-container.vala  |   13 +++++++++----
 .../mediathek/rygel-mediathek-rss-container.vala   |   12 ++++++++----
 3 files changed, 21 insertions(+), 9 deletions(-)
---
diff --git a/src/plugins/mediathek/rygel-mediathek-plugin.vala b/src/plugins/mediathek/rygel-mediathek-plugin.vala
index 1a37335..e9d4313 100644
--- a/src/plugins/mediathek/rygel-mediathek-plugin.vala
+++ b/src/plugins/mediathek/rygel-mediathek-plugin.vala
@@ -45,6 +45,9 @@ public class Rygel.Mediathek.Plugin : Rygel.MediaServerPlugin {
     public const string NAME = "ZDFMediathek";
 
     public Plugin () {
-        base (RootContainer.get_instance (), Plugin.NAME);
+        base (RootContainer.get_instance (),
+              Plugin.NAME,
+              null,
+              PluginCapabilities.TRACK_CHANGES);
     }
 }
diff --git a/src/plugins/mediathek/rygel-mediathek-root-container.vala b/src/plugins/mediathek/rygel-mediathek-root-container.vala
index 1cb8a8c..1534565 100644
--- a/src/plugins/mediathek/rygel-mediathek-root-container.vala
+++ b/src/plugins/mediathek/rygel-mediathek-root-container.vala
@@ -23,7 +23,8 @@
 using Gee;
 using Soup;
 
-public class Rygel.Mediathek.RootContainer : Rygel.SimpleContainer {
+public class Rygel.Mediathek.RootContainer : Rygel.TrackableContainer,
+                                             Rygel.SimpleContainer {
     private SessionAsync session;
     private static RootContainer instance;
     private static int DEFAULT_UPDATE_INTERVAL = 1800;
@@ -31,7 +32,7 @@ public class Rygel.Mediathek.RootContainer : Rygel.SimpleContainer {
     public static RootContainer get_instance () {
         if (RootContainer.instance == null) {
             RootContainer.instance = new RootContainer ();
-            RootContainer.instance.init ();
+            RootContainer.instance.init.begin ();
         }
 
         return instance;
@@ -46,7 +47,7 @@ public class Rygel.Mediathek.RootContainer : Rygel.SimpleContainer {
         this.session = new Soup.SessionAsync ();
     }
 
-    private void init () {
+    private async void init () {
         Gee.ArrayList<int> feeds = null;
         int update_interval = DEFAULT_UPDATE_INTERVAL;
 
@@ -72,7 +73,7 @@ public class Rygel.Mediathek.RootContainer : Rygel.SimpleContainer {
         }
 
         foreach (int id in feeds) {
-            this.add_child_container (new RssContainer (this, id));
+            yield this.add_child_tracked (new RssContainer (this, id));
         }
 
         Timeout.add_seconds (update_interval, () => {
@@ -85,4 +86,8 @@ public class Rygel.Mediathek.RootContainer : Rygel.SimpleContainer {
             return true;
         });
     }
+
+    public async void add_child (MediaObject object) {
+        this.add_child_container (object as MediaContainer);
+    }
 }
diff --git a/src/plugins/mediathek/rygel-mediathek-rss-container.vala b/src/plugins/mediathek/rygel-mediathek-rss-container.vala
index b546b4f..5fa24bb 100644
--- a/src/plugins/mediathek/rygel-mediathek-rss-container.vala
+++ b/src/plugins/mediathek/rygel-mediathek-rss-container.vala
@@ -24,7 +24,8 @@ using Gee;
 using Soup;
 using Xml;
 
-public class Rygel.Mediathek.RssContainer : Rygel.SimpleContainer {
+public class Rygel.Mediathek.RssContainer : Rygel.TrackableContainer,
+                                            Rygel.SimpleContainer {
     private const string URI_TEMPLATE = "http://www.zdf.de/ZDFmediathek/"; +
                                         "content/%u?view=rss";
     private uint content_id;
@@ -103,14 +104,14 @@ public class Rygel.Mediathek.RssContainer : Rygel.SimpleContainer {
             return false;
         }
 
-        this.children.clear ();
+        yield this.clear ();
         this.child_count = 0;
         for (int i = 0; i < xpath_object->nodesetval->length (); i++) {
             var node = xpath_object->nodesetval->item (i);
             try {
                 var item = yield factory.create (this, node);
                 if (item != null) {
-                    this.add_child_item (item);
+                    yield this.add_child_tracked (item);
                 }
             } catch (VideoItemError error) {
                 debug ("Could not create video item: %s, skipping",
@@ -119,7 +120,6 @@ public class Rygel.Mediathek.RssContainer : Rygel.SimpleContainer {
         }
 
         xpath_free_object (xpath_object);
-        this.updated ();
 
         return this.child_count > 0;
     }
@@ -135,4 +135,8 @@ public class Rygel.Mediathek.RssContainer : Rygel.SimpleContainer {
 
         return message;
     }
+
+    public async void add_child (MediaObject object) {
+        this.add_child_item (object as MediaItem);
+    }
 }