extern void scroller_append_item(Evas_Object *scroller, Evas_Object *item);
extern void scroller_remove_item(Evas_Object *scroller, Evas_Object *item);
+extern void scroller_clear_item(Evas_Object *scroller);
+extern int scroller_count_item(Evas_Object *scroller);
extern void scroller_bring_in_item(Evas_Object *scroller, Evas_Object *item);
extern int scroller_register_event_cb(Evas_Object *scroller, int event_type, void (*event_cb)(Evas_Object *scroller, int event_type, void *event_info, void *user_data), void *user_data);