[empathy] new-call-dialog: filter out CM which doesn't support calls

[Guillaume Desmottes <gdesmott src gnome org>]

commit c4ffa18abd28523741b079ab2913fcdff7f39865
Author: Guillaume Desmottes <guillaume desmottes collabora co uk>
Date:   Wed Dec 16 12:00:11 2009 +0000

    new-call-dialog: filter out CM which doesn't support calls

 libempathy-gtk/empathy-new-call-dialog.c |   35 ++++++++++++++++++++++++++++++
 1 files changed, 35 insertions(+), 0 deletions(-)
---
diff --git a/libempathy-gtk/empathy-new-call-dialog.c b/libempathy-gtk/empathy-new-call-dialog.c
index 2118c67..67bfb58 100644
--- a/libempathy-gtk/empathy-new-call-dialog.c
+++ b/libempathy-gtk/empathy-new-call-dialog.c
@@ -26,6 +26,8 @@
 #include <gtk/gtk.h>
 #include <glib/gi18n-lib.h>
 
+#include <telepathy-glib/interfaces.h>
+
 #include <libempathy/empathy-tp-contact-factory.h>
 #include <libempathy/empathy-contact-manager.h>
 #include <libempathy/empathy-call-factory.h>
@@ -107,6 +109,38 @@ empathy_new_call_dialog_got_response (EmpathyContactSelectorDialog *dialog,
   g_object_unref (factory);
 }
 
+static gboolean
+empathy_new_call_dialog_account_filter (EmpathyContactSelectorDialog *dialog,
+    TpAccount *account)
+{
+  TpConnection *connection;
+  EmpathyDispatcher *dispatcher;
+  GList *classes;
+
+  if (tp_account_get_connection_status (account, NULL) !=
+      TP_CONNECTION_STATUS_CONNECTED)
+    return FALSE;
+
+  /* check if CM supports calls */
+  connection = tp_account_get_connection (account);
+  if (connection == NULL)
+    return FALSE;
+
+  dispatcher = empathy_dispatcher_dup_singleton ();
+
+  classes = empathy_dispatcher_find_requestable_channel_classes
+    (dispatcher, connection, TP_IFACE_CHANNEL_TYPE_STREAMED_MEDIA,
+     TP_HANDLE_TYPE_CONTACT, NULL);
+
+  g_object_unref (dispatcher);
+
+  if (classes == NULL)
+    return FALSE;
+
+  g_list_free (classes);
+  return TRUE;
+}
+
 static GObject *
 empathy_new_call_dialog_constructor (GType type,
     guint n_props,
@@ -178,6 +212,7 @@ empathy_new_call_dialog_class_init (
   object_class->constructor = empathy_new_call_dialog_constructor;
 
   dialog_class->got_response = empathy_new_call_dialog_got_response;
+  dialog_class->account_filter = empathy_new_call_dialog_account_filter;
 }
 
 /**