#ifdef HAVE_CONFIG_H
# include "elementary_config.h"
#endif

#include <Elementary.h>
#include "elm_priv.h"
#include "els_box.h"
#include "elm_widget_box.h"

EAPI Eo_Op ELM_OBJ_BOX_BASE_ID = EO_NOOP;

#define MY_CLASS ELM_OBJ_BOX_CLASS
#define MY_CLASS_NAME "elm_box"

static const char SIG_CHILD_ADDED[] = "child,added";
static const char SIG_CHILD_REMOVED[] = "child,removed";
static const Evas_Smart_Cb_Description _smart_callbacks[] = {
   {SIG_CHILD_ADDED, ""},
   {SIG_CHILD_REMOVED, ""},
   {NULL, NULL}
};

static void *
_elm_box_list_data_get(const Eina_List *list)
{
   Evas_Object_Box_Option *opt = eina_list_data_get(list);
   return opt->obj;
}

static void
_child_added_cb_proxy(void *data,
                      Evas_Object *o __UNUSED__,
                      void *event_info)
{
   Evas_Object *box = data;
   Evas_Object_Box_Option *opt = event_info;
   evas_object_smart_callback_call(box, SIG_CHILD_ADDED, opt->obj);
}

static void
_child_removed_cb_proxy(void *data,
                        Evas_Object *o __UNUSED__,
                        void *event_info)
{
   Evas_Object *box = data;
   Evas_Object *child = event_info;
   evas_object_smart_callback_call(box, SIG_CHILD_REMOVED, child);
}

static void
_elm_box_smart_focus_next_manager_is(Eo *obj EINA_UNUSED, void *_pd EINA_UNUSED, va_list *list)
{
   Eina_Bool *ret = va_arg(*list, Eina_Bool *);
   *ret = EINA_TRUE;
}

static void
_elm_box_smart_focus_next(Eo *obj, void *_pd EINA_UNUSED, va_list *list)
{
   const Eina_List *items;
   void *(*list_data_get)(const Eina_List *list);

   Elm_Focus_Direction dir = va_arg(*list, Elm_Focus_Direction);
   Evas_Object **next = va_arg(*list, Evas_Object **);
   Eina_Bool *ret = va_arg(*list, Eina_Bool *);
   Eina_Bool int_ret;
   if (ret) *ret = EINA_FALSE;

   /* Focus chain */
   /* TODO: Change this to use other chain */
   if ((items = elm_widget_focus_custom_chain_get(obj)))
     list_data_get = eina_list_data_get;
   else
     {
        Elm_Widget_Smart_Data *wd = eo_data_scope_get(obj, ELM_OBJ_WIDGET_CLASS);

        Evas_Object_Box_Data *bd =
          evas_object_smart_data_get(wd->resize_obj);

        items = bd->children;
        list_data_get = _elm_box_list_data_get;

        if (!items) return;
     }

   int_ret = elm_widget_focus_list_next_get(obj, items, list_data_get, dir, next);
   if (ret) *ret = int_ret;
}

static void
_elm_box_smart_focus_direction_manager_is(Eo *obj EINA_UNUSED, void *_pd EINA_UNUSED, va_list *list)
{
   Eina_Bool *ret = va_arg(*list, Eina_Bool *);
   *ret = EINA_TRUE;
}

static void
_elm_box_smart_focus_direction(Eo *obj EINA_UNUSED, void *_pd EINA_UNUSED, va_list *list)
{
   Evas_Object *base = va_arg(*list, Evas_Object *);
   double degree = va_arg(*list, double);
   Evas_Object **direction = va_arg(*list, Evas_Object **);
   double *weight = va_arg(*list, double *);
   Eina_Bool *ret = va_arg(*list, Eina_Bool *);
   if (ret) *ret = EINA_FALSE;
   Eina_Bool int_ret;

   const Eina_List *items;
   void *(*list_data_get)(const Eina_List *list);

   if ((items = elm_widget_focus_custom_chain_get(obj)))
     list_data_get = eina_list_data_get;
   else
     {
        Elm_Widget_Smart_Data *wd = eo_data_scope_get(obj, ELM_OBJ_WIDGET_CLASS);
        Evas_Object_Box_Data *bd =
          evas_object_smart_data_get(wd->resize_obj);

        items = bd->children;
        list_data_get = _elm_box_list_data_get;

        if (!items) return;
     }
   int_ret = elm_widget_focus_list_direction_get
            (obj, base, items, list_data_get, degree, direction, weight);
   if (ret) *ret = int_ret;
}

static void
_elm_box_smart_theme(Eo *obj, void *_pd EINA_UNUSED, va_list *list)
{
   Eina_Bool *ret = va_arg(*list, Eina_Bool *);
   if (ret) *ret = EINA_FALSE;
   Eina_Bool int_ret = EINA_FALSE;

   eo_do_super(obj, MY_CLASS, elm_wdg_theme(&int_ret));
   if (!int_ret) return;

   Elm_Widget_Smart_Data *wd = eo_data_scope_get(obj, ELM_OBJ_WIDGET_CLASS);
   evas_object_smart_calculate(wd->resize_obj);

   if (ret) *ret = EINA_TRUE;
}

static void
_sizing_eval(Evas_Object *obj)
{
   Evas_Coord minw = -1, minh = -1, maxw = -1, maxh = -1;
   Evas_Coord w, h;

   ELM_BOX_DATA_GET(obj, sd);
   Elm_Widget_Smart_Data *wd = eo_data_scope_get(obj, ELM_OBJ_WIDGET_CLASS);

   if (sd->delete_me)
     return;

   evas_object_size_hint_min_get
     (wd->resize_obj, &minw, &minh);

   evas_object_size_hint_max_get
     (wd->resize_obj, &maxw, &maxh);

   evas_object_size_hint_min_set(obj, minw, minh);
   evas_object_size_hint_max_set(obj, maxw, maxh);

   evas_object_geometry_get(obj, NULL, NULL, &w, &h);
   if (w < minw) w = minw;
   if (h < minh) h = minh;
   if ((maxw >= 0) && (w > maxw)) w = maxw;
   if ((maxh >= 0) && (h > maxh)) h = maxh;
   evas_object_resize(obj, w, h);
}

static void
_on_size_hints_changed(void *data,
                       Evas *e __UNUSED__,
                       Evas_Object *obj __UNUSED__,
                       void *event_info __UNUSED__)
{
   _sizing_eval(data);
}

static void
_elm_box_smart_sub_object_del(Eo *obj, void *_pd EINA_UNUSED, va_list *list)
{
   Evas_Object *child = va_arg(*list, Evas_Object *);
   Eina_Bool *ret = va_arg(*list, Eina_Bool *);
   if (ret) *ret = EINA_FALSE;
   Eina_Bool int_ret = EINA_FALSE;

   eo_do_super(obj, MY_CLASS, elm_wdg_sub_object_del(child, &int_ret));
   if (!int_ret) return;

   _sizing_eval(obj);

   if (ret) *ret = EINA_TRUE;
}

static void
_elm_box_custom_layout(Evas_Object *o,
                       Evas_Object_Box_Data *priv,
                       void *data)
{
   ELM_BOX_DATA_GET(data, sd);

   _els_box_layout(o, priv, sd->horizontal, sd->homogeneous,
                   elm_widget_mirrored_get(data));
}

static Eina_Bool
_transition_animation(void *data)
{
   evas_object_smart_changed(data);

   return ECORE_CALLBACK_RENEW;
}

static void
_transition_layout_child_added(void *data,
                               Evas_Object *obj __UNUSED__,
                               void *event_info)
{
   Transition_Animation_Data *tad;
   Evas_Object_Box_Option *opt = event_info;
   Elm_Box_Transition *layout_data = data;

   tad = calloc(1, sizeof(Transition_Animation_Data));
   if (!tad) return;

   tad->obj = opt->obj;
   layout_data->objs = eina_list_append(layout_data->objs, tad);
   layout_data->recalculate = EINA_TRUE;
}

static void
_transition_layout_child_removed(void *data,
                                 Evas_Object *obj __UNUSED__,
                                 void *event_info)
{
   Eina_List *l;
   Transition_Animation_Data *tad;
   Elm_Box_Transition *layout_data = data;

   EINA_LIST_FOREACH(layout_data->objs, l, tad)
     {
        if (tad->obj == event_info)
          {
             free(eina_list_data_get(l));
             layout_data->objs = eina_list_remove_list(layout_data->objs, l);
             layout_data->recalculate = EINA_TRUE;
             break;
          }
     }
}

static void
_transition_layout_obj_resize_cb(void *data,
                                 Evas *e __UNUSED__,
                                 Evas_Object *obj __UNUSED__,
                                 void *event_info __UNUSED__)
{
   Elm_Box_Transition *layout_data = data;

   layout_data->recalculate = EINA_TRUE;
}

static void
_transition_layout_calculate_coords(Evas_Object *obj,
                                    Evas_Object_Box_Data *priv,
                                    Elm_Box_Transition *layout_data)
{
   Eina_List *l;
   Evas_Coord x, y, w, h;
   Transition_Animation_Data *tad;
   const double curtime = ecore_loop_time_get();

   layout_data->duration =
     layout_data->duration - (curtime - layout_data->initial_time);
   layout_data->initial_time = curtime;

   evas_object_geometry_get(obj, &x, &y, &w, &h);
   EINA_LIST_FOREACH(layout_data->objs, l, tad)
     {
        evas_object_geometry_get(tad->obj, &tad->start.x, &tad->start.y,
                                 &tad->start.w, &tad->start.h);
        tad->start.x = tad->start.x - x;
        tad->start.y = tad->start.y - y;
     }
   layout_data->end.layout(obj, priv, layout_data->end.data);
   EINA_LIST_FOREACH(layout_data->objs, l, tad)
     {
        evas_object_geometry_get(tad->obj, &tad->end.x, &tad->end.y,
                                 &tad->end.w, &tad->end.h);
        tad->end.x = tad->end.x - x;
        tad->end.y = tad->end.y - y;
     }
}

static Eina_Bool
_transition_layout_load_children_list(Evas_Object_Box_Data *priv,
                                      Elm_Box_Transition *layout_data)
{
   Eina_List *l;
   Evas_Object_Box_Option *opt;
   Transition_Animation_Data *tad;

   EINA_LIST_FREE(layout_data->objs, tad)
     free(tad);

   EINA_LIST_FOREACH(priv->children, l, opt)
     {
        tad = calloc(1, sizeof(Transition_Animation_Data));
        if (!tad)
          {
             EINA_LIST_FREE(layout_data->objs, tad)
               free(tad);
             layout_data->objs = NULL;
             return EINA_FALSE;
          }
        tad->obj = opt->obj;
        layout_data->objs = eina_list_append(layout_data->objs, tad);
     }
   return EINA_TRUE;
}

static Eina_Bool
_transition_layout_animation_start(Evas_Object *obj,
                                   Evas_Object_Box_Data *priv,
                                   Elm_Box_Transition *layout_data,
                                   Eina_Bool (*transition_animation_cb)
                                   (void *data))
{
   layout_data->start.layout(obj, priv, layout_data->start.data);
   layout_data->box = obj;
   layout_data->initial_time = ecore_loop_time_get();

   if (!_transition_layout_load_children_list(priv, layout_data))
     return EINA_FALSE;

   _transition_layout_calculate_coords(obj, priv, layout_data);

   evas_object_event_callback_add
     (obj, EVAS_CALLBACK_RESIZE, _transition_layout_obj_resize_cb,
     layout_data);
   evas_object_smart_callback_add
     (obj, SIG_CHILD_ADDED, _transition_layout_child_added, layout_data);
   evas_object_smart_callback_add
     (obj, SIG_CHILD_REMOVED, _transition_layout_child_removed, layout_data);

   if (!layout_data->animator)
     layout_data->animator = ecore_animator_add(transition_animation_cb, obj);

   layout_data->animation_ended = EINA_FALSE;

   return EINA_TRUE;
}

static void
_transition_layout_animation_stop(Elm_Box_Transition *layout_data)
{
   layout_data->animation_ended = EINA_TRUE;

   ELM_SAFE_FREE(layout_data->animator, ecore_animator_del);

   if (layout_data->transition_end_cb)
     layout_data->transition_end_cb(layout_data->transition_end_data);
}

static void
_transition_layout_animation_exec(Evas_Object *obj,
                                  Evas_Object_Box_Data *priv __UNUSED__,
                                  Elm_Box_Transition *layout_data,
                                  const double curtime)
{
   Eina_List *l;
   double progress = 0.0;
   Evas_Coord x, y, w, h;
   Transition_Animation_Data *tad;
   Evas_Coord cur_x, cur_y, cur_w, cur_h;

   progress = (curtime - layout_data->initial_time) / layout_data->duration;
   evas_object_geometry_get(obj, &x, &y, &w, &h);

   EINA_LIST_FOREACH(layout_data->objs, l, tad)
     {
        cur_x = x + tad->start.x + ((tad->end.x - tad->start.x) * progress);
        cur_y = y + tad->start.y + ((tad->end.y - tad->start.y) * progress);
        cur_w = tad->start.w + ((tad->end.w - tad->start.w) * progress);
        cur_h = tad->start.h + ((tad->end.h - tad->start.h) * progress);
        evas_object_move(tad->obj, cur_x, cur_y);
        evas_object_resize(tad->obj, cur_w, cur_h);
     }
}

static void
_elm_box_smart_add(Eo *obj, void *_pd EINA_UNUSED, va_list *list EINA_UNUSED)
{
   Elm_Widget_Smart_Data *wd = eo_data_scope_get(obj, ELM_OBJ_WIDGET_CLASS);
   elm_widget_resize_object_set(obj,
                                evas_object_box_add(evas_object_evas_get(obj)));

   evas_object_box_layout_set(wd->resize_obj, _elm_box_custom_layout,
                              obj, NULL);

   evas_object_event_callback_add(wd->resize_obj,
                                  EVAS_CALLBACK_CHANGED_SIZE_HINTS,
                                  _on_size_hints_changed, obj);

   eo_do_super(obj, MY_CLASS, evas_obj_smart_add());

   elm_widget_sub_object_add(eo_parent_get(obj), obj);

   evas_object_smart_callback_add(wd->resize_obj, SIG_CHILD_ADDED,
                                  _child_added_cb_proxy, obj);
   evas_object_smart_callback_add(wd->resize_obj, SIG_CHILD_REMOVED,
                                  _child_removed_cb_proxy, obj);

   elm_widget_can_focus_set(obj, EINA_FALSE);
   elm_widget_highlight_ignore_set(obj, EINA_TRUE);
}

static void
_elm_box_smart_del(Eo *obj, void *_pd, va_list *list EINA_UNUSED)
{
   Eina_List *l;
   Evas_Object *child;

   Elm_Box_Smart_Data *sd = _pd;
   sd->delete_me = EINA_TRUE;

   Elm_Widget_Smart_Data *wd = eo_data_scope_get(obj, ELM_OBJ_WIDGET_CLASS);
   evas_object_event_callback_del_full
     (wd->resize_obj, EVAS_CALLBACK_CHANGED_SIZE_HINTS,
     _on_size_hints_changed, obj);

   /* let's make our box object the *last* to be processed, since it
    * may (smart) parent other sub objects here */
   EINA_LIST_FOREACH (wd->subobjs, l, child)
     {
        if (child == wd->resize_obj)
          {
             wd->subobjs =
               eina_list_demote_list(wd->subobjs, l);
             break;
          }
     }

   eo_do_super(obj, MY_CLASS, evas_obj_smart_del());
}

EAPI Evas_Object *
elm_box_add(Evas_Object *parent)
{
   EINA_SAFETY_ON_NULL_RETURN_VAL(parent, NULL);
   Evas_Object *obj = eo_add(MY_CLASS, parent);
   eo_unref(obj);
   return obj;
}

static void
_constructor(Eo *obj, void *_pd EINA_UNUSED, va_list *list EINA_UNUSED)
{
   eo_do_super(obj, MY_CLASS, eo_constructor());
   eo_do(obj,
         evas_obj_type_set(MY_CLASS_NAME),
         evas_obj_smart_callbacks_descriptions_set(_smart_callbacks, NULL));
}

EAPI void
elm_box_horizontal_set(Evas_Object *obj,
                       Eina_Bool horizontal)
{
   ELM_BOX_CHECK(obj);
   eo_do(obj, elm_obj_box_horizontal_set(horizontal));
}

static void
_horizontal_set(Eo *obj, void *_pd, va_list *list)
{
   Eina_Bool horizontal = va_arg(*list, int);
   Elm_Box_Smart_Data *sd = _pd;
   Elm_Widget_Smart_Data *wd = eo_data_scope_get(obj, ELM_OBJ_WIDGET_CLASS);

   sd->horizontal = !!horizontal;
   evas_object_smart_calculate(wd->resize_obj);
}

EAPI Eina_Bool
elm_box_horizontal_get(const Evas_Object *obj)
{
   ELM_BOX_CHECK(obj) EINA_FALSE;
   Eina_Bool ret;
   eo_do((Eo *) obj, elm_obj_box_horizontal_get(&ret));
   return ret;
}

static void
_horizontal_get(Eo *obj EINA_UNUSED, void *_pd, va_list *list)
{
   Eina_Bool *ret = va_arg(*list, Eina_Bool *);
   const Elm_Box_Smart_Data *sd = _pd;
   *ret = sd->horizontal;
}

EAPI void
elm_box_homogeneous_set(Evas_Object *obj,
                        Eina_Bool homogeneous)
{
   ELM_BOX_CHECK(obj);
   eo_do(obj, elm_obj_box_homogeneous_set(homogeneous));
}

static void
_homogeneous_set(Eo *obj, void *_pd, va_list *list)
{
   Eina_Bool homogeneous = va_arg(*list, int);
   Elm_Box_Smart_Data *sd = _pd;
   Elm_Widget_Smart_Data *wd = eo_data_scope_get(obj, ELM_OBJ_WIDGET_CLASS);

   sd->homogeneous = !!homogeneous;
   evas_object_smart_calculate(wd->resize_obj);
}

EAPI Eina_Bool
elm_box_homogeneous_get(const Evas_Object *obj)
{
   ELM_BOX_CHECK(obj) EINA_FALSE;
   Eina_Bool ret;
   eo_do((Eo *) obj, elm_obj_box_homogeneous_get(&ret));
   return ret;
}

static void
_homogeneous_get(Eo *obj EINA_UNUSED, void *_pd, va_list *list)
{
   Eina_Bool *ret = va_arg(*list, Eina_Bool *);
   const Elm_Box_Smart_Data *sd = _pd;
   *ret = sd->homogeneous;
}

EAPI void
elm_box_pack_start(Evas_Object *obj,
                   Evas_Object *subobj)
{
   ELM_BOX_CHECK(obj);
   eo_do(obj, elm_obj_box_pack_start(subobj));
}

static void
_pack_start(Eo *obj, void *_pd EINA_UNUSED, va_list *list)

{
   Evas_Object *subobj = va_arg(*list, Evas_Object *);
   Elm_Widget_Smart_Data *wd = eo_data_scope_get(obj, ELM_OBJ_WIDGET_CLASS);

   elm_widget_sub_object_add(obj, subobj);
   evas_object_box_prepend(wd->resize_obj, subobj);
}

EAPI void
elm_box_pack_end(Evas_Object *obj,
                 Evas_Object *subobj)
{
   ELM_BOX_CHECK(obj);
   eo_do(obj, elm_obj_box_pack_end(subobj));
}

static void
_pack_end(Eo *obj, void *_pd EINA_UNUSED, va_list *list)
{
   Evas_Object *subobj = va_arg(*list, Evas_Object *);
   Elm_Widget_Smart_Data *wd = eo_data_scope_get(obj, ELM_OBJ_WIDGET_CLASS);

   elm_widget_sub_object_add(obj, subobj);
   evas_object_box_append(wd->resize_obj, subobj);
}

EAPI void
elm_box_pack_before(Evas_Object *obj,
                    Evas_Object *subobj,
                    Evas_Object *before)
{
   ELM_BOX_CHECK(obj);
   eo_do(obj, elm_obj_box_pack_before(subobj, before));
}

static void
_pack_before(Eo *obj, void *_pd EINA_UNUSED, va_list *list)
{
   Evas_Object *subobj = va_arg(*list, Evas_Object *);
   Evas_Object *before = va_arg(*list, Evas_Object *);
   Elm_Widget_Smart_Data *wd = eo_data_scope_get(obj, ELM_OBJ_WIDGET_CLASS);

   elm_widget_sub_object_add(obj, subobj);

   evas_object_box_insert_before
     (wd->resize_obj, subobj, before);
}

EAPI void
elm_box_pack_after(Evas_Object *obj,
                   Evas_Object *subobj,
                   Evas_Object *after)
{
   ELM_BOX_CHECK(obj);
   eo_do(obj, elm_obj_box_pack_after(subobj, after));
}

static void
_pack_after(Eo *obj, void *_pd EINA_UNUSED, va_list *list)
{
   Evas_Object *subobj = va_arg(*list, Evas_Object *);
   Evas_Object *after = va_arg(*list, Evas_Object *);
   Elm_Widget_Smart_Data *wd = eo_data_scope_get(obj, ELM_OBJ_WIDGET_CLASS);

   elm_widget_sub_object_add(obj, subobj);
   evas_object_box_insert_after
     (wd->resize_obj, subobj, after);
}

EAPI void
elm_box_clear(Evas_Object *obj)
{
   ELM_BOX_CHECK(obj);
   eo_do(obj, elm_obj_box_clear());
}

static void
_clear(Eo *obj, void *_pd EINA_UNUSED, va_list *list EINA_UNUSED)
{
   /* EINA_TRUE means to delete objects as well */
   Elm_Widget_Smart_Data *wd = eo_data_scope_get(obj, ELM_OBJ_WIDGET_CLASS);
   evas_object_box_remove_all(wd->resize_obj, EINA_TRUE);
}

EAPI void
elm_box_unpack(Evas_Object *obj,
               Evas_Object *subobj)
{
   ELM_BOX_CHECK(obj);
   eo_do(obj, elm_obj_box_unpack(subobj));

}

static void
_unpack(Eo *obj, void *_pd EINA_UNUSED, va_list *list)
{
   Evas_Object *subobj = va_arg(*list, Evas_Object *);
   Elm_Widget_Smart_Data *wd = eo_data_scope_get(obj, ELM_OBJ_WIDGET_CLASS);

   if (evas_object_box_remove(wd->resize_obj, subobj))
     elm_widget_sub_object_del(obj, subobj);
}

EAPI void
elm_box_unpack_all(Evas_Object *obj)
{
   ELM_BOX_CHECK(obj);
   eo_do(obj, elm_obj_box_unpack_all());
}

static void
_unpack_all(Eo *obj, void *_pd EINA_UNUSED, va_list *list EINA_UNUSED)
{
   Evas_Object_Box_Data *bd;
   Evas_Object_Box_Option *opt;
   Eina_List *l;
   Elm_Widget_Smart_Data *wd = eo_data_scope_get(obj, ELM_OBJ_WIDGET_CLASS);

   ELM_BOX_CHECK(obj);
   bd = evas_object_smart_data_get(wd->resize_obj);
   EINA_LIST_FOREACH (bd->children, l, opt)
     elm_widget_sub_object_del(obj, opt->obj);

   /* EINA_FALSE means to delete objects as well */
   evas_object_box_remove_all(wd->resize_obj, EINA_FALSE);
}

EAPI void
elm_box_layout_set(Evas_Object *obj,
                   Evas_Object_Box_Layout cb,
                   const void *data,
                   Ecore_Cb free_data)
{
   ELM_BOX_CHECK(obj);
   eo_do(obj, elm_obj_box_layout_set(cb, data, free_data));
}

static void
_layout_set(Eo *obj, void *_pd EINA_UNUSED, va_list *list)
{
   Evas_Object_Box_Layout cb = va_arg(*list, Evas_Object_Box_Layout);
   const void *data = va_arg(*list, const void *);
   Ecore_Cb free_data = va_arg(*list, Ecore_Cb);
   Elm_Widget_Smart_Data *wd = eo_data_scope_get(obj, ELM_OBJ_WIDGET_CLASS);
   if (cb)
     evas_object_box_layout_set
       (wd->resize_obj, cb, data, free_data);
   else
     evas_object_box_layout_set
       (wd->resize_obj, _elm_box_custom_layout, obj, NULL);
}

EAPI void
elm_box_layout_transition(Evas_Object *obj,
                          Evas_Object_Box_Data *priv,
                          void *data)
{
   Elm_Box_Transition *box_data = data;
   const double curtime = ecore_loop_time_get();

   if (box_data->animation_ended)
     {
        box_data->end.layout(obj, priv, box_data->end.data);
        return;
     }

   if (!box_data->animator)
     {
        if (!_transition_layout_animation_start(obj, priv, box_data,
                                                _transition_animation))
          return;
     }
   else
     {
        if (box_data->recalculate)
          {
             _transition_layout_calculate_coords(obj, priv, box_data);
             box_data->recalculate = EINA_FALSE;
          }
     }

   if ((curtime >= box_data->duration + box_data->initial_time))
     _transition_layout_animation_stop(box_data);
   else
     _transition_layout_animation_exec(obj, priv, box_data, curtime);
}

EAPI Elm_Box_Transition *
elm_box_transition_new(const double duration,
                       Evas_Object_Box_Layout start_layout,
                       void *start_layout_data,
                       Ecore_Cb start_layout_free_data,
                       Evas_Object_Box_Layout end_layout,
                       void *end_layout_data,
                       Ecore_Cb end_layout_free_data,
                       Ecore_Cb transition_end_cb,
                       void *transition_end_data)
{
   Elm_Box_Transition *box_data;

   EINA_SAFETY_ON_NULL_RETURN_VAL(start_layout, NULL);
   EINA_SAFETY_ON_NULL_RETURN_VAL(end_layout, NULL);

   box_data = calloc(1, sizeof(Elm_Box_Transition));
   if (!box_data) return NULL;

   box_data->start.layout = start_layout;
   box_data->start.data = start_layout_data;
   box_data->start.free_data = start_layout_free_data;
   box_data->end.layout = end_layout;
   box_data->end.data = end_layout_data;
   box_data->end.free_data = end_layout_free_data;
   box_data->duration = duration;
   box_data->transition_end_cb = transition_end_cb;
   box_data->transition_end_data = transition_end_data;

   return box_data;
}

EAPI void
elm_box_transition_free(void *data)
{
   EINA_SAFETY_ON_NULL_RETURN(data);

   Transition_Animation_Data *tad;
   Elm_Box_Transition *box_data = data;
   if ((box_data->start.free_data) && (box_data->start.data))
     box_data->start.free_data(box_data->start.data);
   if ((box_data->end.free_data) && (box_data->end.data))
     box_data->end.free_data(box_data->end.data);
   EINA_LIST_FREE(box_data->objs, tad)
     free(tad);

   evas_object_event_callback_del
     (box_data->box, EVAS_CALLBACK_RESIZE, _transition_layout_obj_resize_cb);
   evas_object_smart_callback_del
     (box_data->box, SIG_CHILD_ADDED, _transition_layout_child_added);
   evas_object_smart_callback_del
     (box_data->box, SIG_CHILD_REMOVED, _transition_layout_child_removed);
   if (box_data->animator) ecore_animator_del(box_data->animator);

   free(data);
}

EAPI Eina_List *
elm_box_children_get(const Evas_Object *obj)
{
   ELM_BOX_CHECK(obj) NULL;
   Eina_List *ret = NULL;
   eo_do((Eo *) obj, elm_obj_box_children_get(&ret));
   return ret;
}

static void
_children_get(Eo *obj, void *_pd EINA_UNUSED, va_list *list)
{
   Eina_List **ret = va_arg(*list, Eina_List **);
   Elm_Widget_Smart_Data *wd = eo_data_scope_get(obj, ELM_OBJ_WIDGET_CLASS);
   *ret = evas_object_box_children_get(wd->resize_obj);
}

EAPI void
elm_box_padding_set(Evas_Object *obj,
                    Evas_Coord horizontal,
                    Evas_Coord vertical)
{
   ELM_BOX_CHECK(obj);
   eo_do(obj, elm_obj_box_padding_set(horizontal, vertical));
}

static void
_padding_set(Eo *obj, void *_pd EINA_UNUSED, va_list *list)
{
   Evas_Coord horizontal = va_arg(*list, Evas_Coord);
   Evas_Coord vertical = va_arg(*list, Evas_Coord);
   Elm_Widget_Smart_Data *wd = eo_data_scope_get(obj, ELM_OBJ_WIDGET_CLASS);

   evas_object_box_padding_set
     (wd->resize_obj, horizontal, vertical);
}

EAPI void
elm_box_padding_get(const Evas_Object *obj,
                    Evas_Coord *horizontal,
                    Evas_Coord *vertical)
{
   ELM_BOX_CHECK(obj);
   eo_do((Eo *) obj, elm_obj_box_padding_get(horizontal, vertical));
}

static void
_padding_get(Eo *obj, void *_pd EINA_UNUSED, va_list *list)
{
   Evas_Coord *horizontal = va_arg(*list, Evas_Coord *);
   Evas_Coord *vertical = va_arg(*list, Evas_Coord *);
   Elm_Widget_Smart_Data *wd = eo_data_scope_get(obj, ELM_OBJ_WIDGET_CLASS);
   evas_object_box_padding_get
     (wd->resize_obj, horizontal, vertical);
}

EAPI void
elm_box_align_set(Evas_Object *obj,
                  double horizontal,
                  double vertical)
{
   ELM_BOX_CHECK(obj);
   eo_do(obj, elm_obj_box_align_set(horizontal, vertical));
}

static void
_align_set(Eo *obj, void *_pd EINA_UNUSED, va_list *list)
{
   double horizontal = va_arg(*list, double);
   double vertical = va_arg(*list, double);
   Elm_Widget_Smart_Data *wd = eo_data_scope_get(obj, ELM_OBJ_WIDGET_CLASS);

   evas_object_size_hint_align_set
     (wd->resize_obj, horizontal, vertical);
}

EAPI void
elm_box_align_get(const Evas_Object *obj,
                  double *horizontal,
                  double *vertical)
{
   ELM_BOX_CHECK(obj);
   eo_do((Eo *) obj, elm_obj_box_align_get(horizontal, vertical));
}

static void
_align_get(Eo *obj, void *_pd EINA_UNUSED, va_list *list)
{
   double *horizontal = va_arg(*list, double *);
   double *vertical = va_arg(*list, double *);
   Elm_Widget_Smart_Data *wd = eo_data_scope_get(obj, ELM_OBJ_WIDGET_CLASS);

   evas_object_size_hint_align_get
     (wd->resize_obj, horizontal, vertical);
}

EAPI void
elm_box_recalculate(Evas_Object *obj)
{
   ELM_BOX_CHECK(obj);
   eo_do(obj, elm_obj_box_recalculate());
}

static void
_recalculate(Eo *obj, void *_pd, va_list *list EINA_UNUSED)
{
   Elm_Box_Smart_Data *sd = _pd;

   if (sd->recalc) return;

   Elm_Widget_Smart_Data *wd = eo_data_scope_get(obj, ELM_OBJ_WIDGET_CLASS);
   evas_object_smart_need_recalculate_set
     (wd->resize_obj, EINA_TRUE);
   sd->recalc++;
   evas_object_smart_calculate(wd->resize_obj);
   sd->recalc--;
}

static void
_class_constructor(Eo_Class *klass)
{
   const Eo_Op_Func_Description func_desc[] = {
        EO_OP_FUNC(EO_BASE_ID(EO_BASE_SUB_ID_CONSTRUCTOR), _constructor),

        EO_OP_FUNC(EVAS_OBJ_SMART_ID(EVAS_OBJ_SMART_SUB_ID_ADD), _elm_box_smart_add),
        EO_OP_FUNC(EVAS_OBJ_SMART_ID(EVAS_OBJ_SMART_SUB_ID_DEL), _elm_box_smart_del),

        EO_OP_FUNC(ELM_WIDGET_ID(ELM_WIDGET_SUB_ID_SUB_OBJECT_DEL), _elm_box_smart_sub_object_del),
        EO_OP_FUNC(ELM_WIDGET_ID(ELM_WIDGET_SUB_ID_THEME), _elm_box_smart_theme),
        EO_OP_FUNC(ELM_WIDGET_ID(ELM_WIDGET_SUB_ID_FOCUS_NEXT_MANAGER_IS),  _elm_box_smart_focus_next_manager_is),
        EO_OP_FUNC(ELM_WIDGET_ID(ELM_WIDGET_SUB_ID_FOCUS_NEXT),  _elm_box_smart_focus_next),
        EO_OP_FUNC(ELM_WIDGET_ID(ELM_WIDGET_SUB_ID_FOCUS_DIRECTION_MANAGER_IS), _elm_box_smart_focus_direction_manager_is),
        EO_OP_FUNC(ELM_WIDGET_ID(ELM_WIDGET_SUB_ID_FOCUS_DIRECTION), _elm_box_smart_focus_direction),

        EO_OP_FUNC(ELM_OBJ_BOX_ID(ELM_OBJ_BOX_SUB_ID_HORIZONTAL_SET), _horizontal_set),
        EO_OP_FUNC(ELM_OBJ_BOX_ID(ELM_OBJ_BOX_SUB_ID_HORIZONTAL_GET), _horizontal_get),
        EO_OP_FUNC(ELM_OBJ_BOX_ID(ELM_OBJ_BOX_SUB_ID_HOMOGENEOUS_SET), _homogeneous_set),
        EO_OP_FUNC(ELM_OBJ_BOX_ID(ELM_OBJ_BOX_SUB_ID_HOMOGENEOUS_GET), _homogeneous_get),
        EO_OP_FUNC(ELM_OBJ_BOX_ID(ELM_OBJ_BOX_SUB_ID_PACK_START), _pack_start),
        EO_OP_FUNC(ELM_OBJ_BOX_ID(ELM_OBJ_BOX_SUB_ID_PACK_END), _pack_end),
        EO_OP_FUNC(ELM_OBJ_BOX_ID(ELM_OBJ_BOX_SUB_ID_PACK_BEFORE), _pack_before),
        EO_OP_FUNC(ELM_OBJ_BOX_ID(ELM_OBJ_BOX_SUB_ID_PACK_AFTER), _pack_after),
        EO_OP_FUNC(ELM_OBJ_BOX_ID(ELM_OBJ_BOX_SUB_ID_CLEAR), _clear),
        EO_OP_FUNC(ELM_OBJ_BOX_ID(ELM_OBJ_BOX_SUB_ID_UNPACK), _unpack),
        EO_OP_FUNC(ELM_OBJ_BOX_ID(ELM_OBJ_BOX_SUB_ID_UNPACK_ALL), _unpack_all),
        EO_OP_FUNC(ELM_OBJ_BOX_ID(ELM_OBJ_BOX_SUB_ID_LAYOUT_SET), _layout_set),
        EO_OP_FUNC(ELM_OBJ_BOX_ID(ELM_OBJ_BOX_SUB_ID_CHILDREN_GET), _children_get),
        EO_OP_FUNC(ELM_OBJ_BOX_ID(ELM_OBJ_BOX_SUB_ID_PADDING_SET), _padding_set),
        EO_OP_FUNC(ELM_OBJ_BOX_ID(ELM_OBJ_BOX_SUB_ID_PADDING_GET), _padding_get),
        EO_OP_FUNC(ELM_OBJ_BOX_ID(ELM_OBJ_BOX_SUB_ID_ALIGN_SET), _align_set),
        EO_OP_FUNC(ELM_OBJ_BOX_ID(ELM_OBJ_BOX_SUB_ID_ALIGN_GET), _align_get),
        EO_OP_FUNC(ELM_OBJ_BOX_ID(ELM_OBJ_BOX_SUB_ID_RECALCULATE), _recalculate),
        EO_OP_FUNC_SENTINEL
   };
   eo_class_funcs_set(klass, func_desc);

   evas_smart_legacy_type_register(MY_CLASS_NAME, klass);
}

static const Eo_Op_Description op_desc[] = {
     EO_OP_DESCRIPTION(ELM_OBJ_BOX_SUB_ID_HORIZONTAL_SET, "Set the horizontal orientation."),
     EO_OP_DESCRIPTION(ELM_OBJ_BOX_SUB_ID_HORIZONTAL_GET, "Get the horizontal orientation."),
     EO_OP_DESCRIPTION(ELM_OBJ_BOX_SUB_ID_HOMOGENEOUS_SET, "Set the box to arrange its children homogeneously."),
     EO_OP_DESCRIPTION(ELM_OBJ_BOX_SUB_ID_HOMOGENEOUS_GET, "Get whether the box is using homogeneous mode or not."),
     EO_OP_DESCRIPTION(ELM_OBJ_BOX_SUB_ID_PACK_START, "Add an object to the beginning of the pack list."),
     EO_OP_DESCRIPTION(ELM_OBJ_BOX_SUB_ID_PACK_END, "Add an object at the end of the pack list."),
     EO_OP_DESCRIPTION(ELM_OBJ_BOX_SUB_ID_PACK_BEFORE, "Adds an object to the box before the indicated object."),
     EO_OP_DESCRIPTION(ELM_OBJ_BOX_SUB_ID_PACK_AFTER, "Adds an object to the box after the indicated object."),
     EO_OP_DESCRIPTION(ELM_OBJ_BOX_SUB_ID_CLEAR, "Clear the box of all children."),
     EO_OP_DESCRIPTION(ELM_OBJ_BOX_SUB_ID_UNPACK, "Unpack a box item."),
     EO_OP_DESCRIPTION(ELM_OBJ_BOX_SUB_ID_UNPACK_ALL, "Remove all items from the box, without deleting them."),
     EO_OP_DESCRIPTION(ELM_OBJ_BOX_SUB_ID_LAYOUT_SET, "Set the layout defining function to be used by the box."),
     EO_OP_DESCRIPTION(ELM_OBJ_BOX_SUB_ID_CHILDREN_GET, "Retrieve a list of the objects packed into the box."),
     EO_OP_DESCRIPTION(ELM_OBJ_BOX_SUB_ID_PADDING_SET, "Set the space (padding) between the box's elements."),
     EO_OP_DESCRIPTION(ELM_OBJ_BOX_SUB_ID_PADDING_GET, "Get the space (padding) between the box's elements."),
     EO_OP_DESCRIPTION(ELM_OBJ_BOX_SUB_ID_ALIGN_SET, "Set the alignment of the whole bounding box of contents."),
     EO_OP_DESCRIPTION(ELM_OBJ_BOX_SUB_ID_ALIGN_GET, "Get the alignment of the whole bounding box of contents."),
     EO_OP_DESCRIPTION(ELM_OBJ_BOX_SUB_ID_RECALCULATE, "Force the box to recalculate its children packing."),
     EO_OP_DESCRIPTION_SENTINEL
};

static const Eo_Class_Description class_desc = {
     EO_VERSION,
     MY_CLASS_NAME,
     EO_CLASS_TYPE_REGULAR,
     EO_CLASS_DESCRIPTION_OPS(&ELM_OBJ_BOX_BASE_ID, op_desc, ELM_OBJ_BOX_SUB_ID_LAST),
     NULL,
     sizeof(Elm_Box_Smart_Data),
     _class_constructor,
     NULL
};

EO_DEFINE_CLASS(elm_obj_box_class_get, &class_desc, ELM_OBJ_WIDGET_CLASS, NULL);