1 files changed, 22 insertions, 0 deletions

diff --git a/apps/gui/list.c b/apps/gui/list.c
index d1b2748a60..96b3447728 100644
--- a/apps/gui/list.c
+++ b/apps/gui/list.c
@@ -596,6 +596,23 @@ bool gui_synclist_keyclick_callback(int action, void* data)
 }
 #endif
 
+/*
+ * Magic to make sure the list gets updated correctly if the skin does
+ * something naughty like a full screen update when we are in a button
+ * loop.
+ *
+ * The GUI_EVENT_NEED_UI_UPDATE event is registered for in list_do_action_timeout()
+ * and unregistered in gui_synclict_do_button(). This is done because
+ * if something is using the list UI they *must* be calling those
+ * two functions in the correct order or the list wont work.
+ */
+static struct gui_synclist *current_lists;
+void _lists_uiviewport_update_callback(void *data)
+{
+    (void)data;
+    gui_synclist_draw(current_lists);
+}
+
 bool gui_synclist_do_button(struct gui_synclist * lists,
                             int *actionptr, enum list_wrap wrap)
 {
@@ -610,6 +627,8 @@ bool gui_synclist_do_button(struct gui_synclist * lists,
     static int next_item_modifier = 1;
     static int last_accel_tick = 0;
 
+    remove_event(GUI_EVENT_NEED_UI_UPDATE, _lists_uiviewport_update_callback);
+
     if (action != ACTION_TOUCHSCREEN)
     {
         if (global_settings.list_accel_start_delay)
@@ -772,6 +791,9 @@ int list_do_action_timeout(struct gui_synclist *lists, int timeout)
 /* Returns the lowest of timeout or the delay until a postponed
    scheduled announcement is due (if any). */
 {
+    current_lists = lists;
+    add_event(GUI_EVENT_NEED_UI_UPDATE, false,
+            _lists_uiviewport_update_callback);
     if(lists->scheduled_talk_tick)
     {
         long delay = lists->scheduled_talk_tick -current_tick +1;