[empathy] contact list store: order contacts by alias, ID, protocol then account ID (fixes #612864)

[Jonny Lamb <jonnylamb src gnome org>]

commit 1cb13f899d7d6a22db3e54a58f5dca2753da0637
Author: Jonny Lamb <jonnylamb gnome org>
Date:   Sun Apr 18 18:10:15 2010 +0100

    contact list store: order contacts by alias, ID, protocol then account ID (fixes #612864)
    
    Signed-off-by: Jonny Lamb <jonnylamb gnome org>

 libempathy-gtk/empathy-contact-list-store.c |   45 +++++++++++++++++++++++++--
 1 files changed, 42 insertions(+), 3 deletions(-)
---
diff --git a/libempathy-gtk/empathy-contact-list-store.c b/libempathy-gtk/empathy-contact-list-store.c
index 1616934..dc1d8aa 100644
--- a/libempathy-gtk/empathy-contact-list-store.c
+++ b/libempathy-gtk/empathy-contact-list-store.c
@@ -1621,6 +1621,45 @@ compare_separator_and_groups (gboolean is_separator_a,
 }
 
 static gint
+contact_list_store_contact_sort (EmpathyContact *contact_a,
+				 EmpathyContact *contact_b)
+{
+	TpAccount *account_a, *account_b;
+	gint ret_val;
+
+	/* alias */
+	ret_val = g_utf8_collate (empathy_contact_get_name (contact_a),
+				  empathy_contact_get_name (contact_b));
+
+	if (ret_val != 0)
+		goto out;
+
+	/* identifier */
+	ret_val = g_utf8_collate (empathy_contact_get_id (contact_a),
+				  empathy_contact_get_id (contact_b));
+
+	if (ret_val != 0)
+		goto out;
+
+	account_a = empathy_contact_get_account (contact_a);
+	account_b = empathy_contact_get_account (contact_b);
+
+	/* protocol */
+	ret_val = strcmp (tp_account_get_protocol (account_a),
+			  tp_account_get_protocol (account_a));
+
+	if (ret_val != 0)
+		goto out;
+
+	/* account ID */
+	ret_val = strcmp (tp_proxy_get_object_path (account_a),
+			  tp_proxy_get_object_path (account_a));
+
+out:
+	return ret_val;
+}
+
+static gint
 contact_list_store_state_sort_func (GtkTreeModel *model,
 				    GtkTreeIter  *iter_a,
 				    GtkTreeIter  *iter_b,
@@ -1660,8 +1699,8 @@ contact_list_store_state_sort_func (GtkTreeModel *model,
 		empathy_contact_get_presence (EMPATHY_CONTACT (contact_b)));
 
 	if (ret_val == 0) {
-		/* Fallback: compare by name */
-		ret_val = g_utf8_collate (name_a, name_b);
+		/* Fallback: compare by name et al. */
+		ret_val = contact_list_store_contact_sort (contact_a, contact_b);
 	}
 
 free_and_out:
@@ -1708,7 +1747,7 @@ contact_list_store_name_sort_func (GtkTreeModel *model,
 		name_a, name_b, contact_a, contact_b, fake_group_a, fake_group_b);
 
 	if (ret_val == 0)
-		ret_val = g_utf8_collate (name_a, name_b);
+		ret_val = contact_list_store_contact_sort (contact_a, contact_b);
 
 	if (contact_a) {
 		g_object_unref (contact_a);