group_namelistchange(): for ui reasons, divulge the peernumber and the nature of the change (add, del, name change).

tox.*, Messenger.*, group_chats.*:
- expand interface of callback by peernumber/change

groupchats.c:
- call callback in addpeer/delpeer/setnick with peernumber and flag

nTox.c:
- print_groupchatpeers(): print as many names on a line as possible, not one peer per line
- print_groupnamelistchange(): only print the change, if possible (i.e. "new peer", "peer's new name")
- added command "/p" to print the list of peers

1 files changed, 3 insertions, 3 deletions

diff --git a/toxcore/Messenger.c b/toxcore/Messenger.c
index cc52c069..1a7fc230 100644
--- a/toxcore/Messenger.c
+++ b/toxcore/Messenger.c
@@ -785,7 +785,7 @@ void m_callback_group_message(Messenger *m, void (*function)(Messenger *m, int,
  * It gets called every time the name list changes(new peer/name, deleted peer)
  *  Function(Tox *tox, int groupnumber, void *userdata)
  */
-void m_callback_group_namelistchange(Messenger *m, void (*function)(Messenger *m, int, void *), void *userdata)
+void m_callback_group_namelistchange(Messenger *m, void (*function)(Messenger *m, int, int, uint8_t, void *), void *userdata)
 {
     m->group_namelistchange = function;
     m->group_namelistchange_userdata = userdata;
@@ -812,7 +812,7 @@ static void group_message_function(Group_Chat *chat, int peer_number, uint8_t *m
         (*m->group_message)(m, i, peer_number, message, length, m->group_message_userdata);
 }
 
-static void group_namelistchange_function(Group_Chat *chat, void *userdata)
+static void group_namelistchange_function(Group_Chat *chat, int peer, uint8_t change, void *userdata)
 {
     Messenger *m = userdata;
     int i = get_chat_num(m, chat);
@@ -820,7 +820,7 @@ static void group_namelistchange_function(Group_Chat *chat, void *userdata)
         return;
 
     if (m->group_namelistchange)
-        (*m->group_namelistchange)(m, i, m->group_namelistchange_userdata);
+        (*m->group_namelistchange)(m, i, peer, change, m->group_namelistchange_userdata);
 }