//Compile with:
//gcc -g genlist_example_04.c -o genlist_example_04 `pkg-config --cflags --libs elementary`

#include <Elementary.h>

#define N_ITEMS 300

static Elm_Genlist_Item_Class *_itc = NULL;
static Elm_Genlist_Item_Class *_itc_group = NULL;
static int nitems = 0;

static char *
_item_label_get(void *data, Evas_Object *obj EINA_UNUSED, const char *part)
{
   time_t t = (time_t)ecore_time_unix_get();
   char buf[256];
   int i = (int)(uintptr_t)data;

   if (!strcmp(part, "elm.text"))
     snprintf(buf, sizeof(buf), "Item # %i", i);
   else
     {
        int n;
        snprintf(buf, sizeof(buf), "realized at %s", ctime(&t));
        n = strlen(buf);
        buf[n - 1] = '\0';
     }

   return strdup(buf);
}

static Evas_Object *
_item_content_get(void *data EINA_UNUSED, Evas_Object *obj, const char *part)
{
   Evas_Object *ic = elm_icon_add(obj);

   if (!strcmp(part, "elm.swallow.icon"))
     elm_icon_standard_set(ic, "clock");

   evas_object_size_hint_aspect_set(ic, EVAS_ASPECT_CONTROL_VERTICAL, 1, 1);
   return ic;
}

static void
_item_sel_cb(void *data, Evas_Object *obj, void *event_info)
{
   printf("sel item data [%p] on genlist obj [%p], item pointer [%p]\n",
          data, obj, event_info);
}

static char *
_group_label_get(void *data, Evas_Object *obj EINA_UNUSED, const char *part EINA_UNUSED)
{
   char buf[256];
   int i = (int)(uintptr_t)data;

   snprintf(buf, sizeof(buf), "Group %d (item #%d)", i / 7, i);

   return strdup(buf);
}

static Evas_Object *
_group_content_get(void *data EINA_UNUSED, Evas_Object *obj, const char *part)
{
   Evas_Object *ic = elm_icon_add(obj);

   if (!strcmp(part, "elm.swallow.icon"))
     elm_icon_standard_set(ic, "home");

   evas_object_size_hint_aspect_set(ic, EVAS_ASPECT_CONTROL_VERTICAL, 1, 1);
   return ic;
}

static void
_append_cb(void *data, Evas_Object *o EINA_UNUSED, void *event_info EINA_UNUSED)
{
   Evas_Object *list = data;

   elm_genlist_item_append(list, _itc,
                           (void *)(uintptr_t)nitems++, NULL,
                           ELM_GENLIST_ITEM_NONE,
                           _item_sel_cb, NULL);

}

static void
_prepend_cb(void *data, Evas_Object *o EINA_UNUSED, void *event_info EINA_UNUSED)
{
   Evas_Object *list = data;

   elm_genlist_item_prepend(list, _itc,
                            (void *)(uintptr_t)nitems++, NULL,
                            ELM_GENLIST_ITEM_NONE,
                            _item_sel_cb, NULL);

}

static void
_insert_before_cb(void *data, Evas_Object *o EINA_UNUSED, void *event_info EINA_UNUSED)
{
   Evas_Object *list = data;
   Elm_Object_Item *glit = elm_genlist_selected_item_get(list);

   if (!glit) return;

   elm_genlist_item_insert_before(list, _itc,
                                  (void *)(uintptr_t)nitems++, NULL,
                                  glit, ELM_GENLIST_ITEM_NONE,
                                  _item_sel_cb, NULL);

}

static void
_insert_after_cb(void *data, Evas_Object *o EINA_UNUSED, void *event_info EINA_UNUSED)
{
   Evas_Object *list = data;
   Elm_Object_Item *glit = elm_genlist_selected_item_get(list);

   if (!glit) return;

   elm_genlist_item_insert_after(list, _itc,
                                 (void *)(uintptr_t)nitems++, NULL,
                                 glit, ELM_GENLIST_ITEM_NONE,
                                 _item_sel_cb, NULL);

}

static void
_next_cb(void *data, Evas_Object *o EINA_UNUSED, void *event_info EINA_UNUSED)
{
   Evas_Object *list = data;
   Elm_Object_Item *glit = elm_genlist_selected_item_get(list);

   if (glit) glit = elm_genlist_item_next_get(glit);
   if (!glit) glit = elm_genlist_first_item_get(list);

   elm_genlist_item_selected_set(glit, EINA_TRUE);
   elm_genlist_item_show(glit, ELM_GENLIST_ITEM_SCROLLTO_IN);
}

static void
_prev_cb(void *data, Evas_Object *o EINA_UNUSED, void *event_info EINA_UNUSED)
{
   Evas_Object *list = data;
   Elm_Object_Item *glit = elm_genlist_selected_item_get(list);

   if (glit) glit = elm_genlist_item_prev_get(glit);
   if (!glit) glit = elm_genlist_last_item_get(list);

   elm_genlist_item_selected_set(glit, EINA_TRUE);
   elm_genlist_item_show(glit, ELM_GENLIST_ITEM_SCROLLTO_IN);
}

static void
_bring_in_cb(void *data, Evas_Object *o EINA_UNUSED, void *event_info EINA_UNUSED)
{
   Elm_Object_Item *glit = data;
   if (!glit) return;

   elm_genlist_item_bring_in(glit, ELM_GENLIST_ITEM_SCROLLTO_IN);
}

static void
_show_cb(void *data, Evas_Object *o EINA_UNUSED, void *event_info EINA_UNUSED)
{
   Elm_Object_Item *glit = data;
   if (!glit) return;

   elm_genlist_item_show(glit, ELM_GENLIST_ITEM_SCROLLTO_IN);
}

static void
_middle_in_cb(void *data, Evas_Object *o EINA_UNUSED, void *event_info EINA_UNUSED)
{
   Elm_Object_Item *glit = data;
   if (!glit) return;

   elm_genlist_item_bring_in(glit, ELM_GENLIST_ITEM_SCROLLTO_MIDDLE);
}

static void
_middle_show_cb(void *data, Evas_Object *o EINA_UNUSED, void *event_info EINA_UNUSED)
{
   Elm_Object_Item *glit = data;
   if (!glit) return;

   elm_genlist_item_show(glit, ELM_GENLIST_ITEM_SCROLLTO_MIDDLE);
}

static void
_top_in_cb(void *data, Evas_Object *o EINA_UNUSED, void *event_info EINA_UNUSED)
{
   Elm_Object_Item *glit = data;
   if (!glit) return;

   elm_genlist_item_bring_in(glit, ELM_GENLIST_ITEM_SCROLLTO_TOP);
}

static void
_top_show_cb(void *data, Evas_Object *o EINA_UNUSED, void *event_info EINA_UNUSED)
{
   Elm_Object_Item *glit = data;
   if (!glit) return;

   elm_genlist_item_show(glit, ELM_GENLIST_ITEM_SCROLLTO_TOP);
}

static void
_realize_cb(void *data, Evas_Object *o EINA_UNUSED, void *event_info EINA_UNUSED)
{
   Evas_Object *list = data;
   Elm_Object_Item *glit = elm_genlist_selected_item_get(list);
   if (!glit) return;

   elm_genlist_item_update(glit);
}

static Evas_Object *
_button_add(Evas_Object *list, Evas_Object *box, const char *label, Evas_Smart_Cb cb)
{
   Evas_Object *bt;

   bt = elm_button_add(elm_object_parent_widget_get(list));
   elm_object_text_set(bt, label);
   elm_box_pack_end(box, bt);
   evas_object_show(bt);

   if (cb)
     evas_object_smart_callback_add(bt, "clicked", cb, list);

   return bt;
}

EAPI_MAIN int
elm_main(int argc EINA_UNUSED, char **argv EINA_UNUSED)
{
   Evas_Object *win, *box, *fbox;
   Evas_Object *list;
   Evas_Object *bt_bring_in, *bt_show;
   Evas_Object *bt_middle_in, *bt_middle_show;
   Evas_Object *bt_top_in, *bt_top_show;
   int i;

   win = elm_win_util_standard_add("genlist", "Genlist");
   elm_policy_set(ELM_POLICY_QUIT, ELM_POLICY_QUIT_LAST_WINDOW_CLOSED);
   elm_win_autodel_set(win, EINA_TRUE);

   box = elm_box_add(win);
   evas_object_size_hint_weight_set(box, EVAS_HINT_EXPAND, EVAS_HINT_EXPAND);
   elm_win_resize_object_add(win, box);
   evas_object_show(box);

   if (!_itc)
     {
        _itc = elm_genlist_item_class_new();
        _itc->item_style = "default";
        _itc->func.text_get = _item_label_get;
        _itc->func.content_get = _item_content_get;
        _itc->func.state_get = NULL;
        _itc->func.del = NULL;
     }

   if (!_itc_group)
     {
        _itc_group = elm_genlist_item_class_new();
        _itc_group->item_style = "group_index";
        _itc_group->func.text_get = _group_label_get;
        _itc_group->func.content_get = _group_content_get;
        _itc_group->func.state_get = NULL;
        _itc_group->func.del = NULL;
     }
   list = elm_genlist_add(win);

   evas_object_size_hint_weight_set(list, EVAS_HINT_EXPAND, EVAS_HINT_EXPAND);
   evas_object_size_hint_align_set(list, EVAS_HINT_FILL, EVAS_HINT_FILL);
   elm_box_pack_end(box, list);
   evas_object_show(list);

   fbox = elm_box_add(win);
   elm_box_layout_set(fbox, evas_object_box_layout_flow_horizontal,
                      NULL, NULL);
   evas_object_size_hint_weight_set(fbox, EVAS_HINT_EXPAND, 0);
   evas_object_size_hint_align_set(fbox, EVAS_HINT_FILL, EVAS_HINT_FILL);
   elm_box_pack_end(box, fbox);
   evas_object_show(fbox);

   _button_add(list, fbox, "prepend", _prepend_cb);
   _button_add(list, fbox, "append", _append_cb);
   _button_add(list, fbox, "insert before", _insert_before_cb);
   _button_add(list, fbox, "insert after", _insert_after_cb);
   _button_add(list, fbox, "prev", _prev_cb);
   _button_add(list, fbox, "next", _next_cb);
   _button_add(list, fbox, "realize", _realize_cb);
   bt_bring_in = _button_add(list, fbox, "bring #50", NULL);
   bt_show = _button_add(list, fbox, "show #50", NULL);
   bt_middle_in = _button_add(list, fbox, "bring to middle #200", NULL);
   bt_middle_show = _button_add(list, fbox, "show in middle #200", NULL);
   bt_top_in = _button_add(list, fbox, "bring to top #250", NULL);
   bt_top_show = _button_add(list, fbox, "show in top #250", NULL);

   for (i = 0; i < N_ITEMS; i++)
     {
        Elm_Object_Item *gli = NULL, *glg = NULL;

        if (i % 7 == 0)
          {
             glg = gli = elm_genlist_item_append(list, _itc_group,
                                                 (void *)(uintptr_t)nitems++, NULL,
                                                 ELM_GENLIST_ITEM_GROUP,
                                                 _item_sel_cb, NULL);
             elm_genlist_item_select_mode_set(gli, ELM_OBJECT_SELECT_MODE_DISPLAY_ONLY);
          }
        else
          {
             gli = elm_genlist_item_append(list, _itc,
                                           (void *)(uintptr_t)nitems++, glg,
                                           ELM_GENLIST_ITEM_NONE,
                                           _item_sel_cb, NULL);
          }

        switch (i)
          {
           case 3:
              elm_object_item_disabled_set(gli, EINA_TRUE);
              break;
           case 50:
              evas_object_smart_callback_add(
                 bt_bring_in, "clicked", _bring_in_cb, gli);
              evas_object_smart_callback_add(
                 bt_show, "clicked", _show_cb, gli);
              break;
           case 200:
              evas_object_smart_callback_add(
                 bt_middle_in, "clicked", _middle_in_cb, gli);
              evas_object_smart_callback_add(
                 bt_middle_show, "clicked", _middle_show_cb, gli);
              break;
           case 250:
              evas_object_smart_callback_add(
                 bt_top_in, "clicked", _top_in_cb, gli);
              evas_object_smart_callback_add(
                 bt_top_show, "clicked", _top_show_cb, gli);
          }
     }

   evas_object_resize(win, 420, 320);
   evas_object_show(win);

   elm_run();

   return 0;
}
ELM_MAIN()