#include <Elementary.h>
#define WIDTH (500)
#define HEIGHT (700)
#define MSG_ID_VEL (1)
static void
_update_animation(Evas_Object *prefs, Evas_Object *layout)
{
   Eina_Value value;
   Eina_Bool animation;
   eina_value_get(&value, &animation);
   if (animation)
   else
}
static void
_update_animation_time(Evas_Object *prefs, Evas_Object *layout)
{
   Eina_Value value;
   float animation_time;
   Edje_Message_Float msg;
   eina_value_get(&value, &animation_time);
   if (animation_time < 0.01) animation_time = 0.01;
   msg.val = animation_time;
                            MSG_ID_VEL, &msg);
}
static void
_update(Evas_Object *prefs, Evas_Object *layout)
{
   _update_animation(prefs, layout);
   _update_animation_time(prefs, layout);
}
static void
_page_loaded_cb(void *data, Evas_Object *obj, void *event_info)
{
   Evas_Object *layout = data;
   _update(obj, layout);
}
static void
_item_changed_cb(void *data, Evas_Object *obj, void *event_info)
{
   const char *item = event_info;
   Evas_Object *layout = data;
   if (!strcmp(item, "main:config:options:animation_time"))
     _update_animation_time(obj, layout);
   else if (!strcmp(item, "main:config:options:animation"))
     _update_animation(obj, layout);
}
EAPI_MAIN int
elm_main(int argc, char **argv)
{
   Evas_Object *win, *prefs, *layout;
   evas_object_size_hint_weight_set(prefs, EVAS_HINT_EXPAND, EVAS_HINT_EXPAND);
   evas_object_resize(prefs, WIDTH, HEIGHT);
   evas_object_show(prefs);
   evas_object_smart_callback_add(prefs, "page,loaded", _page_loaded_cb,
                                  layout);
   evas_object_smart_callback_add(prefs, "item,changed", _item_changed_cb,
                                  layout);
   prefs_data =
   _update_animation_time(prefs, layout);
   _update_animation(prefs, layout);
   evas_object_resize(win, WIDTH, HEIGHT);
   evas_object_show(win);
   return 0;
}