[tracker/evo-new-api] Evolution: Add demo code for listing available CamelStores.

[Matthew Barnes <mbarnes src gnome org>]

commit 5c90bd39a4d86ad85aa0976a55422bc5aea43509
Author: Matthew Barnes <mbarnes redhat com>
Date:   Thu Jul 5 17:10:04 2012 -0400

    Evolution: Add demo code for listing available CamelStores.

 src/plugins/evolution/tracker-evolution-plugin.c |   73 ++++++++++++++++++++++
 1 files changed, 73 insertions(+), 0 deletions(-)
---
diff --git a/src/plugins/evolution/tracker-evolution-plugin.c b/src/plugins/evolution/tracker-evolution-plugin.c
index 4991a58..cb3c820 100644
--- a/src/plugins/evolution/tracker-evolution-plugin.c
+++ b/src/plugins/evolution/tracker-evolution-plugin.c
@@ -102,6 +102,70 @@ tracker_miner_evolution_set_mail_session (TrackerMinerEvolution *miner,
 	g_weak_ref_set (&miner->priv->mail_session, mail_session);
 }
 
+static GList *
+tracker_miner_evolution_list_mail_stores (TrackerMinerEvolution *miner)
+{
+	EMailSession *mail_session;
+	ESourceRegistry *registry;
+	GList *list, *link;
+	GList *stores = NULL;
+	const gchar *extension_name;
+
+	/* XXX This is just demonstration code showing how to build
+	 *     a list of available CamelStores with the new EDS API. */
+
+	mail_session = tracker_miner_evolution_ref_mail_session (miner);
+
+	/* XXX You'll probably also want to listen for "source-added"
+	 *     and "source-removed" signals from the ESourceRegistry. */
+	registry = e_mail_session_get_registry (mail_session);
+
+	/* List all ESources having a [Mail Account] extension. */
+	extension_name = E_SOURCE_EXTENSION_MAIL_ACCOUNT;
+	list = e_source_registry_list_sources (registry, extension_name);
+
+	for (link = list; link != NULL; link = g_list_next (link)) {
+		ESource *source = E_SOURCE (link->data);
+		CamelService *service;
+		const gchar *uid;
+
+		uid = e_source_get_uid (source);
+
+		/* Skip Search Folders. */
+		if (g_strcmp0 (uid, E_MAIL_SESSION_VFOLDER_UID) == 0)
+			continue;
+
+		/* CamelServices share the same UID as the corresponding
+		 * ESource, so we can just query the CamelSession by the
+		 * mail account ESource UID. */
+		service = camel_session_get_service (CAMEL_SESSION (mail_session), uid);
+
+		/* The service returned should be a CamelStore. */
+		if (!CAMEL_IS_STORE (service)) {
+			g_warning (
+				"%s: Expected a CamelStore for UID "
+				"'%s' but instead got %s", G_STRFUNC,
+				uid, (service == NULL) ? "bupkis!" :
+				G_OBJECT_TYPE_NAME (service));
+			continue;
+		}
+
+		/* Reference the service so it doesn't disappear on us. */
+		stores = g_list_prepend (stores, g_object_ref (service));
+
+		g_debug (
+			"%s: Found %s (\"%s\")",
+			G_STRFUNC, G_OBJECT_TYPE_NAME (service),
+			camel_service_get_display_name (service));
+	}
+
+	g_list_free_full (list, (GDestroyNotify) g_object_unref);
+
+	g_object_unref (mail_session);
+
+	return stores;
+}
+
 static void
 miner_evolution_initable_iface_init (GInitableIface *iface)
 {
@@ -186,6 +250,14 @@ tracker_miner_evolution_finalize (GObject *plugin)
 }
 
 static void
+tracker_miner_evolution_constructed (GObject *object)
+{
+	G_OBJECT_CLASS (tracker_miner_evolution_parent_class)->constructed (object);
+
+	tracker_miner_evolution_list_mail_stores (TRACKER_MINER_EVOLUTION (object));
+}
+
+static void
 tracker_miner_evolution_class_init (TrackerMinerEvolutionClass *klass)
 {
 	GObjectClass *object_class = G_OBJECT_CLASS (klass);
@@ -201,6 +273,7 @@ tracker_miner_evolution_class_init (TrackerMinerEvolutionClass *klass)
 	object_class->set_property = tracker_miner_evolution_set_property;
 	object_class->get_property = tracker_miner_evolution_get_property;
 	object_class->finalize = tracker_miner_evolution_finalize;
+	object_class->constructed = tracker_miner_evolution_constructed;
 
 	g_type_class_add_private (object_class, sizeof (TrackerMinerEvolutionPrivate));