[empathy] add empathy_tp_call_get_connection_manager

[Guillaume Desmottes <gdesmott src gnome org>]

commit 3fa2b952c259dc6b44ce3f7e1e599e6ce9350b59
Author: Guillaume Desmottes <guillaume desmottes collabora co uk>
Date:   Mon Nov 9 12:03:53 2009 +0000

    add empathy_tp_call_get_connection_manager

 libempathy/empathy-tp-call.c |   21 +++++++++++++++++++++
 libempathy/empathy-tp-call.h |    2 ++
 2 files changed, 23 insertions(+), 0 deletions(-)
---
diff --git a/libempathy/empathy-tp-call.c b/libempathy/empathy-tp-call.c
index cb9e35c..6d0941c 100644
--- a/libempathy/empathy-tp-call.c
+++ b/libempathy/empathy-tp-call.c
@@ -773,3 +773,24 @@ empathy_tp_call_is_sending_video (EmpathyTpCall *call)
   return priv->video->direction & TP_MEDIA_STREAM_DIRECTION_SEND ?
       TRUE : FALSE;
 }
+
+const gchar *
+empathy_tp_call_get_connection_manager (EmpathyTpCall *self)
+{
+  EmpathyTpCallPriv *priv = GET_PRIV (self);
+  TpConnection *conn;
+  TpAccount *account;
+
+  if (priv->channel == NULL)
+    return NULL;
+
+  conn = tp_channel_borrow_connection (priv->channel);
+  if (conn == NULL)
+    return NULL;
+
+  account = empathy_get_account_for_connection (conn);
+  if (account == NULL)
+    return NULL;
+
+  return tp_account_get_connection_manager (account);
+}
diff --git a/libempathy/empathy-tp-call.h b/libempathy/empathy-tp-call.h
index a00fe3e..476b10a 100644
--- a/libempathy/empathy-tp-call.h
+++ b/libempathy/empathy-tp-call.h
@@ -88,6 +88,8 @@ gboolean empathy_tp_call_has_dtmf (EmpathyTpCall *call);
 gboolean empathy_tp_call_is_receiving_video (EmpathyTpCall *call);
 gboolean empathy_tp_call_is_sending_video (EmpathyTpCall *call);
 
+const gchar * empathy_tp_call_get_connection_manager (EmpathyTpCall *self);
+
 G_END_DECLS
 
 #endif /* __EMPATHY_TP_CALL_H__ */