[empathy] add empathy_individual_manager_lookup_by_contact()

[Guillaume Desmottes <gdesmott src gnome org>]

commit 894ce49de11658ae2b66907bf609f0e6810acb3e
Author: Guillaume Desmottes <guillaume desmottes collabora co uk>
Date:   Fri Feb 10 14:40:28 2012 +0100

    add empathy_individual_manager_lookup_by_contact()
    
    https://bugzilla.gnome.org/show_bug.cgi?id=669676

 libempathy/empathy-individual-manager.c |   52 +++++++++++++++++++++++++++++++
 libempathy/empathy-individual-manager.h |    4 ++
 2 files changed, 56 insertions(+), 0 deletions(-)
---
diff --git a/libempathy/empathy-individual-manager.c b/libempathy/empathy-individual-manager.c
index a1ca269..68b094e 100644
--- a/libempathy/empathy-individual-manager.c
+++ b/libempathy/empathy-individual-manager.c
@@ -763,3 +763,55 @@ empathy_individual_manager_get_contacts_loaded (EmpathyIndividualManager *self)
 
   return priv->contacts_loaded;
 }
+
+static gboolean
+individual_has_contact (FolksIndividual *individual,
+    TpContact *contact)
+{
+  GeeSet *personas;
+  GeeIterator *iter;
+  gboolean found = FALSE;
+
+  personas = folks_individual_get_personas (individual);
+  iter = gee_iterable_iterator (GEE_ITERABLE (personas));
+
+  while (!found && gee_iterator_next (iter))
+    {
+      TpfPersona *persona = gee_iterator_get (iter);
+
+      if (TPF_IS_PERSONA (persona))
+        {
+          TpContact *c = tpf_persona_get_contact (persona);
+
+          if (c == contact)
+            found = TRUE;
+        }
+
+      g_clear_object (&persona);
+    }
+
+  g_clear_object (&iter);
+
+  return found;
+}
+
+/* Try finding a FolksIndividual containing @contact as one of his persona */
+FolksIndividual *
+empathy_individual_manager_lookup_by_contact (EmpathyIndividualManager *self,
+    TpContact *contact)
+{
+  EmpathyIndividualManagerPriv *priv = GET_PRIV (self);
+  GHashTableIter iter;
+  gpointer value;
+
+  g_hash_table_iter_init (&iter, priv->individuals);
+  while (g_hash_table_iter_next (&iter, NULL, &value))
+    {
+      FolksIndividual *individual = value;
+
+      if (individual_has_contact (individual, contact))
+        return individual;
+    }
+
+  return NULL;
+}
diff --git a/libempathy/empathy-individual-manager.h b/libempathy/empathy-individual-manager.h
index ec76038..08a1faa 100644
--- a/libempathy/empathy-individual-manager.h
+++ b/libempathy/empathy-individual-manager.h
@@ -93,5 +93,9 @@ void empathy_individual_manager_set_blocked (EmpathyIndividualManager *self,
 gboolean empathy_individual_manager_get_contacts_loaded (
     EmpathyIndividualManager *self);
 
+FolksIndividual * empathy_individual_manager_lookup_by_contact (
+    EmpathyIndividualManager *self,
+    TpContact *contact);
+
 G_END_DECLS
 #endif /* __EMPATHY_INDIVIDUAL_MANAGER_H__ */