[empathy: 10/19] Get the original message from the logger so we can supersede it

[Danielle Madeley <daniellem src gnome org>]

commit 878a1b3a5204e9713e9ce6203af14cb51c6f96af
Author: Danielle Madeley <danielle madeley collabora co uk>
Date:   Fri May 20 15:25:58 2011 +1000

    Get the original message from the logger so we can supersede it
    
    Strictly, we don't need to do this, we could just use the supersedes-token
    as the message-token and we'd still be able to edit the messages in the future,
    but this way we get the nice pretty annotation saying that we edited it and
    when.

 libempathy-gtk/empathy-chat.c |   23 ++++++++++++++++++++++-
 1 files changed, 22 insertions(+), 1 deletions(-)
---
diff --git a/libempathy-gtk/empathy-chat.c b/libempathy-gtk/empathy-chat.c
index 47f1e68..85a0b77 100644
--- a/libempathy-gtk/empathy-chat.c
+++ b/libempathy-gtk/empathy-chat.c
@@ -38,6 +38,7 @@
 #include <telepathy-glib/account-manager.h>
 #include <telepathy-glib/util.h>
 #include <telepathy-logger/log-manager.h>
+#include <telepathy-logger/text-event.h>
 #include <libempathy/empathy-contact-list.h>
 #include <libempathy/empathy-gsettings.h>
 #include <libempathy/empathy-keyring.h>
@@ -2331,12 +2332,32 @@ 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);
+
+		/* append the latest message */
 		message = empathy_message_from_tpl_log_event (l->data);
 		g_object_unref (l->data);
 
-		empathy_chat_view_append_message (chat->view, message);
+		if (empathy_message_is_edit (message))
+			empathy_chat_view_edit_message (chat->view, message);
+		else
+			empathy_chat_view_append_message (chat->view, message);
+
 		g_object_unref (message);
 	}
 	g_list_free (messages);