#include "e.h"

static Evas_Object *_trans_preview_add(E_Config_Dialog_Data *cfdata, Evas *evas, int minw, int minh);
static void         _e_wid_done(void *data, Evas_Object *obj, const char *emission, const char *source);
static void         _trans_preview_trans_set(E_Config_Dialog_Data *cfdata, const char *trans);

static void        *_create_data(E_Config_Dialog *cfd);
static void         _free_data(E_Config_Dialog *cfd, E_Config_Dialog_Data *cfdata);
static int          _basic_check_changed(E_Config_Dialog *cfd, E_Config_Dialog_Data *cfdata);
static int          _basic_apply_data(E_Config_Dialog *cfd, E_Config_Dialog_Data *cfdata);
static Evas_Object *_basic_create_widgets(E_Config_Dialog *cfd, Evas *evas, E_Config_Dialog_Data *cfdata);

static void         _event_cb_changed(void *data);
static void         _trans_cb_changed(void *data);

struct _E_Config_Dialog_Data
{
   char        *transition_start;
   char        *transition_desk;
   char        *transition_change;

   Evas_Object *event_list;
   Evas_Object *trans_list;
   Evas_Object *tp;
   Evas_Object *o_trans;
   Evas_Object *o_prev_bg;
   Evas_Object *o_bg;
};

E_Config_Dialog *
e_int_config_transitions(E_Comp *comp, const char *params __UNUSED__)
{
   E_Config_Dialog *cfd;
   E_Config_Dialog_View *v;

   if (e_config_dialog_find("E", "appearance/transitions")) return NULL;
   v = E_NEW(E_Config_Dialog_View, 1);
   if (!v) return NULL;

   v->create_cfdata = _create_data;
   v->free_cfdata = _free_data;
   v->basic.apply_cfdata = _basic_apply_data;
   v->basic.create_widgets = _basic_create_widgets;
   v->basic.check_changed = _basic_check_changed;

   cfd = e_config_dialog_new(comp, _("Transition Settings"),
                             "E", "appearance/transitions",
                             "preferences-transitions", 0, v, NULL);
   return cfd;
}

static void
_fill_data(E_Config_Dialog_Data *cfdata)
{
   if (e_config->transition_start)
     cfdata->transition_start = strdup(e_config->transition_start);
   if (e_config->transition_desk)
     cfdata->transition_desk = strdup(e_config->transition_desk);
   if (e_config->transition_change)
     cfdata->transition_change = strdup(e_config->transition_change);
}

static void *
_create_data(E_Config_Dialog *cfd __UNUSED__)
{
   E_Config_Dialog_Data *cfdata;

   cfdata = E_NEW(E_Config_Dialog_Data, 1);
   _fill_data(cfdata);
   return cfdata;
}

static void
_free_data(E_Config_Dialog *cfd __UNUSED__, E_Config_Dialog_Data *cfdata)
{
   E_FREE(cfdata->transition_start);
   E_FREE(cfdata->transition_desk);
   E_FREE(cfdata->transition_change);
   E_FREE(cfdata);
}

static int
_basic_check_changed(E_Config_Dialog *cfd __UNUSED__, E_Config_Dialog_Data *cfdata)
{
   return (!cfdata->transition_start && e_config->transition_start) ||
          (cfdata->transition_start && !e_config->transition_start) ||
          (!cfdata->transition_desk && e_config->transition_desk) ||
          (cfdata->transition_desk && !e_config->transition_desk) ||
          (!cfdata->transition_change && e_config->transition_change) ||
          (cfdata->transition_change && !e_config->transition_change) ||
          (cfdata->transition_start && e_config->transition_start &&
           strcmp(cfdata->transition_start, e_config->transition_start)) ||
          (cfdata->transition_desk && e_config->transition_desk &&
           strcmp(cfdata->transition_desk, e_config->transition_desk)) ||
          (cfdata->transition_change && e_config->transition_change &&
           strcmp(cfdata->transition_change, e_config->transition_change));
}

static int
_basic_apply_data(E_Config_Dialog *cfd __UNUSED__, E_Config_Dialog_Data *cfdata)
{
   Eina_List *trans = NULL;
   const char *str;

   trans = e_theme_transition_list();

   if (e_config->transition_start)
     eina_stringshare_del(e_config->transition_start);
   e_config->transition_start = NULL;
   if (cfdata->transition_start)
     {
        if (eina_list_search_sorted(trans, EINA_COMPARE_CB(strcmp),
                                    cfdata->transition_start))
          {
             e_config->transition_start =
               eina_stringshare_add(cfdata->transition_start);
          }
        /* if (e_theme_transition_find(cfdata->transition_start))  */
        /*   e_config->transition_start =  */
        /*   eina_stringshare_add(cfdata->transition_start); */
     }

   if (e_config->transition_desk)
     eina_stringshare_del(e_config->transition_desk);
   e_config->transition_desk = NULL;
   if (cfdata->transition_desk)
     {
        if (eina_list_search_sorted(trans, EINA_COMPARE_CB(strcmp),
                                    cfdata->transition_desk))
          {
             e_config->transition_desk =
               eina_stringshare_add(cfdata->transition_desk);
          }
        /* if (e_theme_transition_find(cfdata->transition_desk))  */
        /*   e_config->transition_desk = eina_stringshare_add(cfdata->transition_desk); */
     }

   if (e_config->transition_change)
     eina_stringshare_del(e_config->transition_change);
   e_config->transition_change = NULL;
   if (cfdata->transition_change)
     {
        if (eina_list_search_sorted(trans, EINA_COMPARE_CB(strcmp),
                                    cfdata->transition_change))
          {
             e_config->transition_change =
               eina_stringshare_add(cfdata->transition_change);
          }
        /* if (e_theme_transition_find(cfdata->transition_change))  */
        /*   e_config->transition_change = eina_stringshare_add(cfdata->transition_change); */
     }

   e_config_save_queue();

   EINA_LIST_FREE(trans, str)
     eina_stringshare_del(str);

   return 1;
}

static Evas_Object *
_basic_create_widgets(E_Config_Dialog *cfd, Evas *evas, E_Config_Dialog_Data *cfdata)
{
   E_Zone *zone;
   Evas_Object *o, *of, *il;
   Eina_List *l;
   char *t;

   zone = e_zone_current_get(cfd->comp);

   o = e_widget_table_add(evas, 0);

   of = e_widget_framelist_add(evas, _("Events"), 0);
   il = e_widget_ilist_add(evas, 48, 48, NULL);
   cfdata->event_list = il;
   e_widget_size_min_set(il, 140, 128);

   evas_event_freeze(evas_object_evas_get(il));
   edje_freeze();
   e_widget_ilist_freeze(il);
   e_widget_ilist_append(il, NULL, _("Startup"), _event_cb_changed, cfdata, NULL);
   e_widget_ilist_append(il, NULL, _("Desk Change"), _event_cb_changed, cfdata, NULL);
   e_widget_ilist_append(il, NULL, _("Background Change"), _event_cb_changed, cfdata, NULL);
   e_widget_ilist_go(il);
   e_widget_ilist_thaw(il);
   edje_thaw();
   evas_event_thaw(evas_object_evas_get(il));
   e_widget_framelist_object_append(of, il);
   e_widget_table_object_append(o, of, 0, 0, 1, 1, 1, 1, 1, 0);

   of = e_widget_framelist_add(evas, _("Transitions"), 0);
   il = e_widget_ilist_add(evas, 48, 48, NULL);
   cfdata->trans_list = il;
   e_widget_size_min_set(il, 100, 128);

   evas_event_freeze(evas_object_evas_get(il));
   edje_freeze();
   e_widget_ilist_freeze(il);
   e_widget_ilist_append(il, NULL, _("None"), _trans_cb_changed, cfdata, NULL);

   EINA_LIST_FOREACH(e_theme_transition_list(), l, t)
     {
        if (!t) continue;
        e_widget_ilist_append(il, NULL, t, _trans_cb_changed, cfdata, NULL);
     }

   e_widget_ilist_go(il);
   e_widget_ilist_thaw(il);
   edje_thaw();
   evas_event_thaw(evas_object_evas_get(il));
   e_widget_framelist_object_append(of, il);
   e_widget_table_object_append(o, of, 1, 0, 1, 1, 1, 1, 1, 0);

   of = e_widget_framelist_add(evas, _("Preview"), 0);
   il = _trans_preview_add(cfdata, evas, 200, ((200 * zone->h) / zone->w));
   e_widget_framelist_object_append(of, il);
   e_widget_table_object_append(o, of, 0, 1, 2, 1, 1, 1, 1, 1);


   return o;
}

static void
_event_cb_changed(void *data)
{
   E_Config_Dialog_Data *cfdata;
   const char *list, *trans = NULL;
   int sel, i;

   cfdata = data;
   sel = e_widget_ilist_selected_get(cfdata->event_list);
   switch (sel)
     {
      case 0:
        trans = e_config->transition_start;
        break;

      case 1:
        trans = e_config->transition_desk;
        break;

      case 2:
        trans = e_config->transition_change;
        break;
     }

   for (i = 0; i < e_widget_ilist_count(cfdata->trans_list); i++)
     {
        list = e_widget_ilist_nth_label_get(cfdata->trans_list, i);
        if (!list) continue;
        if (!trans)
          {
             if (!strcmp(_("None"), list))
               {
                  e_widget_ilist_selected_set(cfdata->trans_list, i);
                  return;
               }
          }
        else
          {
             if (!strcmp(trans, list))
               {
                  e_widget_ilist_selected_set(cfdata->trans_list, i);
                  return;
               }
          }
     }

   e_widget_ilist_unselect(cfdata->trans_list);
}

static void
_trans_cb_changed(void *data)
{
   E_Config_Dialog_Data *cfdata;
   const char *t;
   int sel;

   cfdata = data;
   sel = e_widget_ilist_selected_get(cfdata->event_list);

   t = e_widget_ilist_selected_label_get(cfdata->trans_list);
   if (!t) return;

   if (!strcmp(t, _("None"))) t = NULL;
   switch (sel)
     {
      case 0:
        E_FREE(cfdata->transition_start);
        if (t) cfdata->transition_start = strdup(t);
        break;

      case 1:
        E_FREE(cfdata->transition_desk);
        if (t) cfdata->transition_desk = strdup(t);
        break;

      case 2:
        E_FREE(cfdata->transition_change);
        if (t) cfdata->transition_change = strdup(t);
        break;

      default:
        break;
     }
   if (!t) return;
   _trans_preview_trans_set(cfdata, t);
}

Evas_Object *
_trans_preview_add(E_Config_Dialog_Data *cfdata, Evas *evas, int minw, int minh)
{
   Evas_Object *obj, *o, *oa;

   oa = e_widget_aspect_add(evas, minw, minh);
   obj = e_widget_preview_add(evas, minw, minh);
   e_widget_aspect_child_set(oa, obj);

   o = edje_object_add(e_widget_preview_evas_get(obj));
   cfdata->o_prev_bg = o;
   e_theme_edje_object_set(o, "base/theme/widgets", "e/transpreview/1");
   evas_object_show(o);
   e_widget_preview_extern_object_set(obj, o);

   cfdata->tp = obj;
   return oa;
}

static void
_trans_preview_trans_set(E_Config_Dialog_Data *cfdata, const char *trans)
{
   Evas_Object *o;
   char buf[4096];

   if (cfdata->o_trans)
     evas_object_del(cfdata->o_trans);
   if (cfdata->o_bg)
     evas_object_del(cfdata->o_bg);
   if (cfdata->o_prev_bg)
     evas_object_del(cfdata->o_prev_bg);

   cfdata->o_trans = NULL;
   cfdata->o_bg = NULL;
   cfdata->o_prev_bg = NULL;

   snprintf(buf, sizeof(buf), "e/transitions/%s", trans);

   o = edje_object_add(e_widget_preview_evas_get(cfdata->tp));
   cfdata->o_trans = o;
   e_theme_edje_object_set(cfdata->o_trans, "base/theme/transitions", buf);
   edje_object_signal_callback_add(o, "e,state,done", "*", _e_wid_done, cfdata);
   evas_object_show(o);
   e_widget_preview_extern_object_set(cfdata->tp, o);

   o = edje_object_add(e_widget_preview_evas_get(cfdata->tp));
   cfdata->o_bg = o;
   e_theme_edje_object_set(o, "base/theme/widgets", "e/transpreview/0");
   evas_object_show(o);

   o = edje_object_add(e_widget_preview_evas_get(cfdata->tp));
   cfdata->o_prev_bg = o;
   e_theme_edje_object_set(o, "base/theme/widgets", "e/transpreview/1");
   evas_object_show(o);

   edje_object_part_swallow(cfdata->o_trans, "e.swallow.bg.old", cfdata->o_prev_bg);
   edje_object_part_swallow(cfdata->o_trans, "e.swallow.bg.new", cfdata->o_bg);

   edje_object_signal_emit(cfdata->o_trans, "e,action,start", "e");
}

static void
_e_wid_done(void *data, Evas_Object *obj __UNUSED__, const char *emission __UNUSED__, const char *source __UNUSED__)
{
   E_Config_Dialog_Data *cfdata;
   Evas_Object *o;

   cfdata = data;

   if (cfdata->o_trans)
     evas_object_del(cfdata->o_trans);
   if (cfdata->o_bg)
     evas_object_del(cfdata->o_bg);
   if (cfdata->o_prev_bg)
     evas_object_del(cfdata->o_prev_bg);

   cfdata->o_trans = NULL;
   cfdata->o_bg = NULL;
   cfdata->o_prev_bg = NULL;

   o = edje_object_add(e_widget_preview_evas_get(cfdata->tp));
   cfdata->o_prev_bg = o;
   e_theme_edje_object_set(o, "base/theme/widgets", "e/transpreview/1");
   evas_object_show(o);
   e_widget_preview_extern_object_set(cfdata->tp, o);
}