[empathy] add empathy_connection_aggregator_get_all_groups()

[Guillaume Desmottes <gdesmott src gnome org>]

commit 97f3aec6da2eed048d878611667381a773980e59
Author: Guillaume Desmottes <guillaume desmottes collabora co uk>
Date:   Tue Nov 29 14:01:12 2011 +0100

    add empathy_connection_aggregator_get_all_groups()
    
    https://bugzilla.gnome.org/show_bug.cgi?id=665121

 libempathy/empathy-connection-aggregator.c |   28 ++++++++++++++++++++++++++++
 libempathy/empathy-connection-aggregator.h |    3 +++
 2 files changed, 31 insertions(+), 0 deletions(-)
---
diff --git a/libempathy/empathy-connection-aggregator.c b/libempathy/empathy-connection-aggregator.c
index 0a85603..7074e51 100644
--- a/libempathy/empathy-connection-aggregator.c
+++ b/libempathy/empathy-connection-aggregator.c
@@ -188,3 +188,31 @@ empathy_connection_aggregator_dup_singleton (void)
   g_object_add_weak_pointer (G_OBJECT (aggregator), (gpointer *) &aggregator);
   return aggregator;
 }
+
+GList *
+empathy_connection_aggregator_get_all_groups (EmpathyConnectionAggregator *self)
+{
+  GList *keys, *l;
+  GHashTable *set;
+
+  set = g_hash_table_new (g_str_hash, g_str_equal);
+
+  for (l = self->priv->conns; l != NULL; l = g_list_next (l))
+    {
+      TpConnection *conn = l->data;
+      const gchar * const *groups;
+      guint i;
+
+      groups = tp_connection_get_contact_groups (conn);
+      if (groups == NULL)
+        continue;
+
+      for (i = 0; groups[i] != NULL; i++)
+        g_hash_table_insert (set, (gchar *) groups[i], GUINT_TO_POINTER (TRUE));
+    }
+
+  keys = g_hash_table_get_keys (set);
+  g_hash_table_unref (set);
+
+  return keys;
+}
diff --git a/libempathy/empathy-connection-aggregator.h b/libempathy/empathy-connection-aggregator.h
index a6a2726..6a7fb65 100644
--- a/libempathy/empathy-connection-aggregator.h
+++ b/libempathy/empathy-connection-aggregator.h
@@ -61,6 +61,9 @@ GType empathy_connection_aggregator_get_type (void);
 
 EmpathyConnectionAggregator * empathy_connection_aggregator_dup_singleton (void);
 
+GList * empathy_connection_aggregator_get_all_groups (
+    EmpathyConnectionAggregator *self);
+
 G_END_DECLS
 
 #endif /* #ifndef __EMPATHY_CONNECTION_AGGREGATOR_H__*/