[empathy: 13/19] Replace tpl_text_event_dup_supersedes() with synthetic message

[Danielle Madeley <daniellem src gnome org>]

commit 2d91c5513fce276eb8a65a463119a80609a4eeb7
Author: Danielle Madeley <danielle madeley collabora co uk>
Date:   Wed May 25 17:10:12 2011 +1000

    Replace tpl_text_event_dup_supersedes() with synthetic message
    
    This allows us to handle the case where we get b-supersedes-a, but we've lost
    the original message a.

 libempathy-gtk/empathy-chat.c |   42 +++++++++++++++++++++++-----------------
 1 files changed, 24 insertions(+), 18 deletions(-)
---
diff --git a/libempathy-gtk/empathy-chat.c b/libempathy-gtk/empathy-chat.c
index 85a0b77..dd4bdf0 100644
--- a/libempathy-gtk/empathy-chat.c
+++ b/libempathy-gtk/empathy-chat.c
@@ -2332,31 +2332,37 @@ got_filtered_messages_cb (GObject *manager,
 
 	for (l = messages; l; l = g_list_next (l)) {
 		EmpathyMessage *message;
-		GList *supersedes;
-		g_assert (TPL_IS_EVENT (l->data));
-
-		/* we need the last message this one supersedes, which is the
-		 * the original */
-		supersedes = tpl_text_event_dup_supersedes (l->data);
-
-		if (supersedes != NULL) {
-			message = empathy_message_from_tpl_log_event (
-				g_list_last (supersedes)->data);
-			empathy_chat_view_append_message (chat->view, message);
-
-			g_object_unref (message);
-		}
 
-		g_list_free_full (supersedes, g_object_unref);
+		g_assert (TPL_IS_EVENT (l->data));
 
-		/* append the latest message */
 		message = empathy_message_from_tpl_log_event (l->data);
 		g_object_unref (l->data);
 
-		if (empathy_message_is_edit (message))
+		if (empathy_message_is_edit (message)) {
+			/* this is an edited message, create a synthetic event
+			 * using the supersedes token and
+			 * original-message-sent timestamp, that we can then
+			 * replace */
+			EmpathyMessage *syn_msg = g_object_new (
+				EMPATHY_TYPE_MESSAGE,
+				"body", "",
+				"token", empathy_message_get_supersedes (message),
+				"type", empathy_message_get_tptype (message),
+				"timestamp", empathy_message_get_original_timestamp (message),
+				"incoming", empathy_message_is_incoming (message),
+				"is-backlog", TRUE,
+				"receiver", empathy_message_get_receiver (message),
+				"sender", empathy_message_get_sender (message),
+				NULL);
+
+			empathy_chat_view_append_message (chat->view, syn_msg);
 			empathy_chat_view_edit_message (chat->view, message);
-		else
+
+			g_object_unref (syn_msg);
+		} else {
+			/* append the latest message */
 			empathy_chat_view_append_message (chat->view, message);
+		}
 
 		g_object_unref (message);
 	}