First attempt of auto-scrolling works mostly

Signed-off-by: TheJackiMonster <thejackimonster@gmail.com>

5 files changed, 55 insertions, 14 deletions

diff --git a/src/chat.c b/src/chat.c
index 82fd43f..8ad21e5 100644
--- a/src/chat.c
+++ b/src/chat.c
@@ -91,10 +91,11 @@ _chat_message(void *cls,
     if (GNUNET_CHAT_KIND_DELETION == GNUNET_CHAT_message_get_kind(message))
       messages_remove(
           &(app->messages),
+          context,
           GNUNET_CHAT_message_get_target(message)
       );
 
-    messages_add(&(app->messages), message);
+    messages_add(&(app->messages), context, message);
   }
 
   _chat_event(app, KEY_RESIZE);
diff --git a/src/ui/chats.c b/src/ui/chats.c
index 5d991a7..dbffc26 100644
--- a/src/ui/chats.c
+++ b/src/ui/chats.c
@@ -39,19 +39,19 @@ _chats_iterate(void *cls,
   chats->line_index++;
 
   if (selected)
-    chats->selected = GNUNET_CHAT_group_get_context(group);
+    chats->selected = group;
 
   return GNUNET_YES;
 }
 
 static int
 _chats_iterate_messages(void *cls,
-                        UNUSED struct GNUNET_CHAT_Context *context,
+                        struct GNUNET_CHAT_Context *context,
                         const struct GNUNET_CHAT_Message *message)
 {
   UI_MESSAGES_Handle *messages = cls;
 
-  messages_add(messages, message);
+  messages_add(messages, context, message);
 
   return GNUNET_YES;
 }
@@ -99,20 +99,22 @@ chats_event(UI_CHATS_Handle *chats,
     {
       if (chats->selected)
       {
+        struct GNUNET_CHAT_Context *context = GNUNET_CHAT_group_get_context(chats->selected);
+
         messages_clear(&(app->messages));
 
         GNUNET_CHAT_context_iterate_messages(
-            chats->selected,
+            context,
             &_chats_iterate_messages,
             &(app->messages)
         );
 
         GNUNET_CHAT_context_set_user_pointer(
-            chats->selected,
+            context,
             &(app->messages)
         );
 
-        app->chat.context = chats->selected;
+        app->chat.context = context;
       }
       else
         chats->open_dialog.window = chats->window;
diff --git a/src/ui/chats.h b/src/ui/chats.h
index 85a84eb..c4485ad 100644
--- a/src/ui/chats.h
+++ b/src/ui/chats.h
@@ -44,7 +44,7 @@ typedef struct UI_CHATS_Handle
   int line_offset;
   int line_selected;
 
-  struct GNUNET_CHAT_Context *selected;
+  struct GNUNET_CHAT_Group *selected;
 
   UI_CHAT_OPEN_DIALOG_Handle open_dialog;
 } UI_CHATS_Handle;
diff --git a/src/ui/messages.c b/src/ui/messages.c
index 52da9a7..70d64df 100644
--- a/src/ui/messages.c
+++ b/src/ui/messages.c
@@ -156,10 +156,12 @@ messages_event(UI_MESSAGES_Handle *messages,
   const int height = getmaxy(messages->window) - getbegy(messages->window);
   const int y = messages->line_selected - messages->line_offset;
 
+  const int line_height = height - 2;
+
   if (y < 0)
     messages->line_offset += y;
-  else if (y + 3 >= height)
-    messages->line_offset += y + 3 - height;
+  else if (y + 1 >= line_height)
+    messages->line_offset += y + 1 - line_height;
 
   if (messages->line_offset < 0)
     messages->line_offset = 0;
@@ -181,9 +183,10 @@ _messages_iterate_print(UI_MESSAGES_Handle *messages,
   if (y < 0)
     return;
 
-  const int height = getmaxy(messages->window) - getbegy(messages->window) - 2;
+  const int height = getmaxy(messages->window) - getbegy(messages->window);
+  const int line_height = height - 2;
 
-  if (y >= height)
+  if (y >= line_height)
     return;
 
   struct GNUNET_CHAT_Contact *sender = GNUNET_CHAT_message_get_sender(message);
@@ -276,8 +279,9 @@ messages_print(UI_MESSAGES_Handle *messages)
 
   const int width = getmaxx(messages->window) - getbegx(messages->window);
   const int height = getmaxy(messages->window) - getbegy(messages->window);
+  const int line_height = height - 2;
 
-  wmove(messages->window, height - 2, 0);
+  wmove(messages->window, line_height, 0);
   whline(messages->window, '-', width);
 
   const int attrs_select = A_BOLD;
@@ -333,6 +337,7 @@ _message_compare_timestamps(UNUSED void *cls,
 
 void
 messages_add(UI_MESSAGES_Handle *messages,
+             struct GNUNET_CHAT_Context *context,
              const struct GNUNET_CHAT_Message *message)
 {
   enum GNUNET_CHAT_MessageKind kind = GNUNET_CHAT_message_get_kind(message);
@@ -346,7 +351,28 @@ messages_add(UI_MESSAGES_Handle *messages,
       break;
   }
 
-  UI_MESSAGES_List *element = GNUNET_new(UI_MESSAGES_List);
+  struct GNUNET_CHAT_Contact *sender = GNUNET_CHAT_message_get_sender(message);
+  struct GNUNET_CHAT_Group *group = GNUNET_CHAT_context_get_group(context);
+
+  if ((GNUNET_CHAT_KIND_JOIN == kind) &&
+      (GNUNET_CHAT_member_get_user_pointer(group, sender)))
+  {
+    return;
+  }
+
+  const int height = getmaxy(messages->window) - getbegy(messages->window);
+  const int line_height = height - 2;
+
+  int count = 0;
+
+  UI_MESSAGES_List *element = messages->head;
+  while (element)
+  {
+    count++;
+    element = element->next;
+  }
+
+  element = GNUNET_new(UI_MESSAGES_List);
   element->message = message;
 
   GNUNET_CONTAINER_DLL_insert_sorted(
@@ -357,10 +383,20 @@ messages_add(UI_MESSAGES_Handle *messages,
     messages->tail,
     element
   );
+
+  if (GNUNET_CHAT_KIND_JOIN == kind)
+    GNUNET_CHAT_member_set_user_pointer(group, sender, element);
+
+  if (messages->line_selected >= count)
+    messages->line_selected = count + 1;
+
+  if ((line_height > 0) && (messages->line_offset + line_height >= count))
+    messages->line_offset = count + 1 - line_height;
 }
 
 void
 messages_remove(UI_MESSAGES_Handle *messages,
+                UNUSED struct GNUNET_CHAT_Context *context,
                 const struct GNUNET_CHAT_Message *message)
 {
   UI_MESSAGES_List *element = messages->head;
diff --git a/src/ui/messages.h b/src/ui/messages.h
index 06de97f..d969782 100644
--- a/src/ui/messages.h
+++ b/src/ui/messages.h
@@ -75,10 +75,12 @@ messages_clear(UI_MESSAGES_Handle *messages);
 
 void
 messages_add(UI_MESSAGES_Handle *messages,
+             struct GNUNET_CHAT_Context *context,
              const struct GNUNET_CHAT_Message *message);
 
 void
 messages_remove(UI_MESSAGES_Handle *messages,
+                struct GNUNET_CHAT_Context *context,
                 const struct GNUNET_CHAT_Message *message);
 
 #endif /* UI_MESSAGES_H_ */