src/lib/elm_diskselector.c

   1 #include <Elementary.h>
   2 #include "elm_priv.h"
   3 #include "els_scroller.h"
   4
   5 #ifndef MAX
   6 # define MAX(a, b) (((a) > (b)) ? (a) : (b))
   7 #endif
   8
   9 #ifndef CEIL
  10 #define CEIL(a) (((a) % 2 != 0) ? ((a) / 2 + 1) : ((a) / 2))
  11 #endif
  12
  13 #define DISPLAY_ITEM_NUM_MIN 3
  14
  15 typedef struct _Widget_Data Widget_Data;
  16 typedef struct _Elm_Diskselector_Item Elm_Diskselector_Item;
  17
  18 struct _Widget_Data
  19 {
  20    Evas_Object *self;
  21    Evas_Object *scroller;
  22    Evas_Object *main_box;
  23    Evas_Object *left_blank;
  24    Evas_Object *right_blank;
  25    Elm_Diskselector_Item *selected_item;
  26    Elm_Diskselector_Item *first;
  27    Elm_Diskselector_Item *second;
  28    Elm_Diskselector_Item *s_last;
  29    Elm_Diskselector_Item *last;
  30    Eina_List *items;
  31    Eina_List *r_items;
  32    Eina_List *over_items;
  33    Eina_List *under_items;
  34    int item_count, len_threshold, len_side, display_item_num;
  35    Ecore_Idle_Enterer *idler;
  36    Ecore_Idle_Enterer *check_idler;
  37    Evas_Coord minw, minh;
  38    Eina_Bool init:1;
  39    Eina_Bool round:1;
  40    Eina_Bool display_item_num_by_api:1;
  41 };
  42
  43 struct _Elm_Diskselector_Item
  44 {
  45    ELM_WIDGET_ITEM;
  46    Eina_List *node;
  47    Evas_Object *icon;
  48    const char *label;
  49    Evas_Smart_Cb func;
  50 };
  51
  52 static const char *widtype = NULL;
  53
  54 static Eina_Bool _move_scroller(void *data);
  55 static void _del_hook(Evas_Object * obj);
  56 static void _del_pre_hook(Evas_Object * obj);
  57 static void _sizing_eval(Evas_Object * obj);
  58 static void _theme_hook(Evas_Object * obj);
  59 static void _on_focus_hook(void *data, Evas_Object *obj);
  60 static Eina_Bool _event_hook(Evas_Object *obj, Evas_Object *src, Evas_Callback_Type type, void *event_info);
  61 static void _sub_del(void *data, Evas_Object * obj, void *event_info);
  62 static void _round_items_del(Widget_Data *wd);
  63 static void _scroller_move_cb(void *data, Evas_Object *obj, void *event_info);
  64 static void _item_click_cb(void *data, Evas_Object *obj __UNUSED__,
  65                            const char *emission __UNUSED__,
  66                            const char *source __UNUSED__);
  67 static void _selected_item_indicate(Elm_Diskselector_Item *it);
  68 static void _item_text_set_hook(Elm_Object_Item *it,
  69                                 const char *part,
  70                                 const char *label);
  71 static const char * _item_text_get_hook(const Elm_Object_Item *it,
  72                                         const char *part);
  73 static void _item_content_set_hook(Elm_Object_Item *it,
  74                                    const char *part,
  75                                    Evas_Object *content);
  76 static Evas_Object * _item_content_get_hook(const Elm_Object_Item *it,
  77                                             const char *part);
  78
  79 static const char SIG_SELECTED[] = "selected";
  80 static const Evas_Smart_Cb_Description _signals[] = {
  81        {SIG_SELECTED, ""},
  82        {NULL, NULL}
  83 };
  84
  85 static void
  86 _diskselector_object_resize(void *data, Evas *e __UNUSED__, Evas_Object *obj, void *event_info __UNUSED__)
  87 {
  88    Widget_Data *wd;
  89    Evas_Coord w, h;
  90
  91    wd = elm_widget_data_get(data);
  92    if (!wd) return;
  93
  94    if ((wd->minw == -1) && (wd->minh == -1))
  95       elm_coords_finger_size_adjust(6, &wd->minw, 1, &wd->minh);
  96    edje_object_size_min_restricted_calc
  97       (elm_smart_scroller_edje_object_get
  98           (wd->scroller), &wd->minw, &wd->minh, wd->minw, wd->minh);
  99    evas_object_size_hint_min_set(obj, wd->minw, wd->minh);
 100    evas_object_size_hint_max_set(obj, -1, -1);
 101
 102    evas_object_geometry_get(wd->scroller, NULL, NULL, &w, &h);
 103    if (wd->round)
 104      evas_object_resize(wd->main_box, (w / wd->display_item_num) * (wd->item_count + (CEIL(wd->display_item_num) * 2)), h);
 105    else
 106      evas_object_resize(wd->main_box, (w / wd->display_item_num) * (wd->item_count + CEIL(wd->display_item_num)), h);
 107
 108    elm_smart_scroller_paging_set(wd->scroller, 0, 0,
 109                                  (int)(w / wd->display_item_num), 0);
 110
 111    if (!wd->idler)
 112      wd->idler = ecore_idle_enterer_before_add(_move_scroller, data);
 113 }
 114
 115 static void
 116 _item_del(Elm_Diskselector_Item *item)
 117 {
 118    if (!item) return;
 119    eina_stringshare_del(item->label);
 120    if (item->icon)
 121      evas_object_del(item->icon);
 122 }
 123
 124 static int
 125 _count_letter(const char *str)
 126 {
 127    int pos = 0;
 128    int code = 0, chnum;
 129
 130    for (chnum = 0; ; chnum++)
 131      {
 132         pos = evas_string_char_next_get(str, pos, &code);
 133         if (code == 0) break;
 134      }
 135    return chnum;
 136 }
 137
 138 static int
 139 _check_letter(const char *str, int length)
 140 {
 141    int pos = 0;
 142    int code = 0, chnum;
 143
 144    for (chnum = 0; ; chnum++)
 145      {
 146         if (chnum == length) break;
 147         pos = evas_string_char_next_get(str, pos, &code);
 148         if (code == 0) break;
 149      }
 150    return pos;
 151 }
 152
 153 static Eina_Bool
 154 _check_string(void *data)
 155 {
 156    int mid, steps, length, diff;
 157    Elm_Diskselector_Item *it;
 158    Eina_List *list, *l;
 159    Evas_Coord ox, ow;
 160    char buf[1024];
 161    Widget_Data *wd = data;
 162
 163    evas_object_geometry_get(wd->scroller, &ox, NULL, &ow, NULL);
 164    if (ow <= 0)
 165      return EINA_FALSE;
 166    if (!wd->init)
 167      return EINA_FALSE;
 168    if (!wd->round)
 169      list = wd->items;
 170    else
 171      list = wd->r_items;
 172
 173    EINA_LIST_FOREACH(list, l, it)
 174      {
 175         Evas_Coord x, w;
 176         int len;
 177         evas_object_geometry_get(VIEW(it), &x, NULL, &w, NULL);
 178         /* item not visible */
 179         if ((x + w <= ox) || (x >= ox + ow))
 180           continue;
 181
 182         len = _count_letter(it->label);
 183 //        // FIXME: len should be # of ut8f letters. ie count using utf8 string walk, not stringshare len
 184 //        len = eina_stringshare_strlen(it->label);
 185
 186         if (x <= ox + 5)
 187           edje_object_signal_emit(VIEW(it), "elm,state,left_side",
 188                                   "elm");
 189         else if (x + w >= ox + ow - 5)
 190           edje_object_signal_emit(VIEW(it), "elm,state,right_side",
 191                                   "elm");
 192         else
 193           {
 194              if ((wd->len_threshold) && (len > wd->len_threshold))
 195                edje_object_signal_emit(VIEW(it), "elm,state,center_small",
 196                                        "elm");
 197              else
 198                edje_object_signal_emit(VIEW(it), "elm,state,center",
 199                                        "elm");
 200           }
 201
 202         // if len is les that the limit len, skip anyway
 203         if (len <= wd->len_side)
 204           continue;
 205
 206         steps = len - wd->len_side + 1;
 207         mid = x + w / 2;
 208         if (mid <= ox + ow / 2)
 209           diff = (ox + ow / 2) - mid;
 210         else
 211           diff = mid - (ox + ow / 2);
 212
 213         length = len - (int)(diff * steps / (ow / 3));
 214         length = MAX(length, wd->len_side);
 215         // limit string len to "length" ut8f chars
 216         length = _check_letter(it->label, length);
 217         // cut it off at byte mark returned form _check_letter
 218         strncpy(buf, it->label, length);
 219         buf[length] = '\0';
 220         edje_object_part_text_set(VIEW(it), "elm.text", buf);
 221      }
 222
 223    if (wd->check_idler)
 224      ecore_idle_enterer_del(wd->check_idler);
 225    wd->check_idler = NULL;
 226    return EINA_FALSE;
 227 }
 228
 229 static Eina_Bool
 230 _item_del_pre_hook(Elm_Object_Item *it)
 231 {
 232    Elm_Diskselector_Item *item, *item2, *dit;
 233    Eina_List *l;
 234    int i = 0;
 235    Widget_Data *wd;
 236    item = (Elm_Diskselector_Item *)it;
 237    wd = elm_widget_data_get(WIDGET(item));
 238    if (!wd) return EINA_FALSE;
 239
 240    elm_box_unpack(wd->main_box, VIEW(item));
 241
 242    if (wd->round)
 243      wd->r_items = eina_list_remove(wd->r_items, item);
 244
 245    wd->items = eina_list_remove(wd->items, item);
 246
 247    if (wd->selected_item == item)
 248      {
 249         dit = (Elm_Diskselector_Item *) eina_list_nth(wd->items, 0);
 250         if (dit != item)
 251           wd->selected_item = dit;
 252         else
 253           wd->selected_item = eina_list_nth(wd->items, 1);
 254
 255         _selected_item_indicate(wd->selected_item);
 256      }
 257
 258    _item_del(item);
 259    wd->item_count -= 1;
 260
 261    if (wd->round)
 262      {
 263         if (!wd->item_count)
 264           {
 265              evas_object_hide(wd->VIEW(first));
 266              evas_object_hide(wd->VIEW(second));
 267              evas_object_hide(wd->VIEW(last));
 268              evas_object_hide(wd->VIEW(s_last));
 269
 270              EINA_LIST_FOREACH(wd->under_items, l, item2)
 271                evas_object_hide(VIEW(item2));
 272
 273              EINA_LIST_FOREACH(wd->over_items, l, item2)
 274                evas_object_hide(VIEW(item2));
 275           }
 276         else
 277           {
 278              dit = eina_list_nth(wd->items, 0);
 279              if (dit)
 280                {
 281                   eina_stringshare_replace(&wd->first->label, dit->label);
 282                   edje_object_part_text_set(wd->VIEW(first), "elm.text",
 283                                             wd->first->label);
 284                }
 285              dit = eina_list_nth(wd->items, 1);
 286              if (dit)
 287                {
 288                   eina_stringshare_replace(&wd->second->label, dit->label);
 289                   edje_object_part_text_set(wd->VIEW(second), "elm.text",
 290                                             wd->second->label);
 291                }
 292              // if more than 3 itmes should be displayed
 293              for (i = 2; i < CEIL(wd->display_item_num); i++)
 294                {
 295                   dit = eina_list_nth(wd->items, i);
 296                   item2 = eina_list_nth(wd->over_items, i - 2);
 297                   eina_stringshare_replace(&item2->label, dit->label);
 298                   edje_object_part_text_set(VIEW(item2), "elm.text", item2->label);
 299                }
 300
 301              dit = eina_list_nth(wd->items, eina_list_count(wd->items) - 1);
 302              if (dit)
 303                {
 304                   eina_stringshare_replace(&wd->last->label, dit->label);
 305                   edje_object_part_text_set(wd->VIEW(last), "elm.text",
 306                                             wd->last->label);
 307                }
 308              dit = eina_list_nth(wd->items, eina_list_count(wd->items) - 2);
 309              if (dit)
 310                {
 311                   eina_stringshare_replace(&wd->s_last->label, dit->label);
 312                   edje_object_part_text_set(wd->VIEW(s_last), "elm.text",
 313                                             wd->s_last->label);
 314                }
 315              // if more than 3 itmes should be displayed
 316              for (i = 3; i <= CEIL(wd->display_item_num); i++)
 317                {
 318                   dit = eina_list_nth(wd->items, wd->item_count - i);
 319                   item2 = eina_list_nth(wd->under_items, i - 3);
 320                   eina_stringshare_replace(&item2->label, dit->label);
 321                   edje_object_part_text_set(VIEW(item2), "elm.text",
 322                                             item2->label);
 323                }
 324           }
 325      }
 326    wd->check_idler = ecore_idle_enterer_before_add(_check_string, wd);
 327    _sizing_eval(wd->self);
 328
 329    return EINA_TRUE;
 330 }
 331
 332 static Elm_Diskselector_Item *
 333 _item_new(Evas_Object *obj, Evas_Object *icon, const char *label, Evas_Smart_Cb func, const void *data)
 334 {
 335    Elm_Diskselector_Item *it;
 336    const char *style = elm_widget_style_get(obj);
 337
 338    it = elm_widget_item_new(obj, Elm_Diskselector_Item);
 339    if (!it) return NULL;
 340
 341    elm_widget_item_del_pre_hook_set(it, _item_del_pre_hook);
 342    elm_widget_item_text_set_hook_set(it, _item_text_set_hook);
 343    elm_widget_item_text_get_hook_set(it, _item_text_get_hook);
 344    elm_widget_item_content_set_hook_set(it, _item_content_set_hook);
 345    elm_widget_item_content_get_hook_set(it, _item_content_get_hook);
 346
 347    it->label = eina_stringshare_add(label);
 348    it->icon = icon;
 349    it->func = func;
 350    it->base.data = data;
 351    VIEW(it) = edje_object_add(evas_object_evas_get(obj));
 352    _elm_theme_object_set(obj, VIEW(it), "diskselector", "item", style);
 353    evas_object_size_hint_weight_set(VIEW(it), EVAS_HINT_EXPAND,
 354                                     EVAS_HINT_EXPAND);
 355    evas_object_size_hint_align_set(VIEW(it), EVAS_HINT_FILL,
 356                                    EVAS_HINT_FILL);
 357    evas_object_show(VIEW(it));
 358
 359    if (it->label)
 360      {
 361         edje_object_part_text_set(VIEW(it), "elm.text", it->label);
 362         edje_object_signal_callback_add(VIEW(it), "elm,action,click", "", _item_click_cb, it);
 363      }
 364    if (it->icon)
 365      {
 366         evas_object_size_hint_min_set(it->icon, 24, 24);
 367         evas_object_size_hint_max_set(it->icon, 40, 40);
 368         edje_object_part_swallow(VIEW(it), "elm.swallow.icon", it->icon);
 369         evas_object_show(it->icon);
 370         elm_widget_sub_object_add(obj, it->icon);
 371      }
 372    return it;
 373 }
 374
 375 static void
 376 _theme_data_get(Widget_Data *wd)
 377 {
 378    const char* str;
 379    str = edje_object_data_get(wd->right_blank, "len_threshold");
 380    if (str) wd->len_threshold = MAX(0, atoi(str));
 381    else wd->len_threshold = 0;
 382
 383    if (!wd->display_item_num_by_api)
 384      {
 385         str = edje_object_data_get(wd->right_blank, "display_item_num");
 386         if (str) wd->display_item_num = MAX(DISPLAY_ITEM_NUM_MIN, atoi(str));
 387         else wd->display_item_num = DISPLAY_ITEM_NUM_MIN;
 388      }
 389
 390    str = edje_object_data_get(wd->right_blank, "min_width");
 391    if (str) wd->minw = MAX(-1, atoi(str));
 392    else wd->minw = -1;
 393
 394    str = edje_object_data_get(wd->right_blank, "min_height");
 395    if (str) wd->minh = MAX(-1, atoi(str));
 396    else wd->minh = -1;
 397 }
 398
 399 static void
 400 _del_hook(Evas_Object * obj)
 401 {
 402    Widget_Data *wd = elm_widget_data_get(obj);
 403    if (!wd) return;
 404    free(wd);
 405 }
 406
 407 static void
 408 _del_pre_hook(Evas_Object * obj)
 409 {
 410    Elm_Diskselector_Item *it;
 411    Eina_List *l;
 412
 413    Widget_Data *wd = elm_widget_data_get(obj);
 414    if (!wd) return;
 415
 416    if (wd->left_blank)
 417      evas_object_del(wd->left_blank);
 418    if (wd->right_blank)
 419      evas_object_del(wd->right_blank);
 420    if (wd->last)
 421      {
 422         eina_stringshare_del(wd->last->label);
 423         evas_object_del(wd->VIEW(last));
 424         free(wd->last);
 425      }
 426    if (wd->s_last)
 427      {
 428         eina_stringshare_del(wd->s_last->label);
 429         evas_object_del(wd->VIEW(s_last));
 430         free(wd->s_last);
 431      }
 432    if (wd->second)
 433      {
 434         eina_stringshare_del(wd->second->label);
 435         evas_object_del(wd->VIEW(second));
 436         free(wd->second);
 437      }
 438    if (wd->first)
 439      {
 440         eina_stringshare_del(wd->first->label);
 441         evas_object_del(wd->VIEW(first));
 442         free(wd->first);
 443      }
 444
 445    EINA_LIST_FOREACH(wd->under_items, l, it)
 446      {
 447         if (it)
 448           {
 449              eina_stringshare_del(it->label);
 450              evas_object_del(VIEW(it));
 451              free(it);
 452           }
 453      }
 454
 455    EINA_LIST_FOREACH(wd->over_items, l, it)
 456    {
 457      if (it)
 458         {
 459            eina_stringshare_del(it->label);
 460            evas_object_del(VIEW(it));
 461            free(it);
 462         }
 463    }
 464
 465    EINA_LIST_FREE(wd->items, it)
 466      {
 467         _item_del(it);
 468         elm_widget_item_free(it);
 469      }
 470    eina_list_free(wd->r_items);
 471 }
 472
 473 static void
 474 _sizing_eval(Evas_Object * obj)
 475 {
 476    Widget_Data *wd = elm_widget_data_get(obj);
 477    if (!wd) return;
 478    _diskselector_object_resize(obj, NULL, obj, NULL);
 479 }
 480
 481 static void
 482 _theme_hook(Evas_Object * obj)
 483 {
 484    Eina_List *l;
 485    Elm_Diskselector_Item *it;
 486    Widget_Data *wd = elm_widget_data_get(obj);
 487    if (!wd) return;
 488
 489    if (wd->scroller)
 490      elm_smart_scroller_object_theme_set(obj, wd->scroller, "diskselector",
 491                                          "base", elm_widget_style_get(obj));
 492    if (wd->round)
 493      {
 494         EINA_LIST_FOREACH(wd->r_items, l, it)
 495           {
 496              _elm_theme_object_set(obj, VIEW(it), "diskselector", "item",
 497                                    elm_widget_style_get(obj));
 498              edje_object_part_text_set(VIEW(it), "elm.text", it->label);
 499           }
 500      }
 501    else
 502      {
 503         EINA_LIST_FOREACH(wd->items, l, it)
 504           {
 505              _elm_theme_object_set(obj, VIEW(it), "diskselector", "item",
 506                                    elm_widget_style_get(obj));
 507              edje_object_part_text_set(VIEW(it), "elm.text", it->label);
 508           }
 509      }
 510    _elm_theme_object_set(obj, wd->right_blank, "diskselector", "item",
 511                                    elm_widget_style_get(obj));
 512    _theme_data_get(wd);
 513    _sizing_eval(obj);
 514 }
 515
 516 static void
 517 _sub_del(void *data __UNUSED__, Evas_Object * obj, void *event_info)
 518 {
 519    Widget_Data *wd = elm_widget_data_get(obj);
 520    Evas_Object *sub = event_info;
 521    Elm_Diskselector_Item *it;
 522    const Eina_List *l;
 523
 524    if (!wd) return;
 525    if (!sub) abort();
 526    if (sub == wd->scroller)
 527      wd->scroller = NULL;
 528    else
 529      {
 530         EINA_LIST_FOREACH(wd->items, l, it)
 531           {
 532              if (sub == it->icon)
 533                {
 534                   it->icon = NULL;
 535                   _sizing_eval(obj);
 536                   break;
 537                }
 538           }
 539      }
 540 }
 541
 542 static void
 543 _select_item(Elm_Diskselector_Item *it)
 544 {
 545    if (!it) return;
 546    Widget_Data *wd = elm_widget_data_get(WIDGET(it));
 547    wd->selected_item = it;
 548    _selected_item_indicate(wd->selected_item);
 549    if (it->func) it->func((void *)it->base.data, WIDGET(it), it);
 550    evas_object_smart_callback_call(WIDGET(it), SIG_SELECTED, it);
 551 }
 552
 553 static void
 554 _on_focus_hook(void *data __UNUSED__, Evas_Object *obj)
 555 {
 556    Widget_Data *wd = elm_widget_data_get(obj);
 557    if (!wd)
 558      return;
 559
 560    if (elm_widget_focus_get(obj))
 561      {
 562         edje_object_signal_emit(wd->self, "elm,action,focus", "elm");
 563         evas_object_focus_set(wd->self, EINA_TRUE);
 564      }
 565    else
 566      {
 567         edje_object_signal_emit(wd->self, "elm,action,unfocus", "elm");
 568         evas_object_focus_set(wd->self, EINA_FALSE);
 569      }
 570 }
 571
 572 static Eina_Bool
 573 _event_hook(Evas_Object *obj, Evas_Object *src __UNUSED__, Evas_Callback_Type type, void *event_info)
 574 {
 575    if (type != EVAS_CALLBACK_KEY_DOWN) return EINA_FALSE;
 576    Evas_Event_Key_Down *ev = event_info;
 577    Widget_Data *wd = elm_widget_data_get(obj);
 578    if (!wd) return EINA_FALSE;
 579    if (ev->event_flags & EVAS_EVENT_FLAG_ON_HOLD) return EINA_FALSE;
 580    if (elm_widget_disabled_get(obj)) return EINA_FALSE;
 581
 582    Elm_Diskselector_Item *it = NULL;
 583    Eina_List *l;
 584
 585    if (!wd->selected_item) {
 586         ev->event_flags |= EVAS_EVENT_FLAG_ON_HOLD;
 587         return EINA_TRUE;
 588    }
 589
 590    if ((!strcmp(ev->keyname, "Left")) || (!strcmp(ev->keyname, "KP_Left")) ||
 591        (!strcmp(ev->keyname, "Up"))  || (!strcmp(ev->keyname, "KP_Up")))
 592      {
 593         l = wd->selected_item->node->prev;
 594         if ((!l) && (wd->round))
 595           l = eina_list_last(wd->items);
 596      }
 597    else if ((!strcmp(ev->keyname, "Right")) || (!strcmp(ev->keyname, "KP_Right")) ||
 598             (!strcmp(ev->keyname, "Down")) || (!strcmp(ev->keyname, "KP_Down")))
 599      {
 600         l = wd->selected_item->node->next;
 601         if ((!l) && (wd->round))
 602           l = wd->items;
 603      }
 604    else if ((!strcmp(ev->keyname, "Home")) || (!strcmp(ev->keyname, "KP_Home")))
 605      l = wd->items;
 606    else if ((!strcmp(ev->keyname, "End")) || (!strcmp(ev->keyname, "KP_End")))
 607      l = eina_list_last(wd->items);
 608    else return EINA_FALSE;
 609
 610    if (l)
 611      it = eina_list_data_get(l);
 612
 613    if (it)
 614      {
 615         wd->selected_item = it;
 616         if (!wd->idler)
 617           wd->idler = ecore_idle_enterer_before_add(_move_scroller, obj);
 618      }
 619
 620    ev->event_flags |= EVAS_EVENT_FLAG_ON_HOLD;
 621    return EINA_TRUE;
 622 }
 623
 624 static void
 625 _selected_item_indicate(Elm_Diskselector_Item *it)
 626 {
 627    Elm_Diskselector_Item *item;
 628    Eina_List *l;
 629    Widget_Data *wd;
 630    wd = elm_widget_data_get(WIDGET(it));
 631
 632    if (!wd) return;
 633
 634    EINA_LIST_FOREACH(wd->r_items, l, item)
 635      {
 636         if (!strcmp(item->label, it->label)) edje_object_signal_emit(VIEW(item), "elm,state,selected", "elm");
 637         else
 638            edje_object_signal_emit(VIEW(item), "elm,state,default", "elm");
 639      }
 640 }
 641
 642 static void
 643 _item_click_cb(void *data, Evas_Object *obj __UNUSED__,
 644                const char *emission __UNUSED__, const char *source __UNUSED__)
 645 {
 646    Elm_Diskselector_Item *it = data;
 647
 648    if (!it) return;
 649
 650    Widget_Data *wd;
 651    wd = elm_widget_data_get(WIDGET(it));
 652
 653    if (!wd) return;
 654
 655    if (wd->selected_item != it)
 656      {
 657         wd->selected_item = it;
 658         _selected_item_indicate(wd->selected_item);
 659      }
 660
 661    if (it->func) it->func((void *)it->base.data, WIDGET(it), it);
 662 }
 663
 664 static void
 665 _scroller_move_cb(void *data, Evas_Object *obj __UNUSED__, void *event_info __UNUSED__)
 666 {
 667    Evas_Coord x, y, w, h, bw;
 668    Widget_Data *wd = data;
 669
 670    _check_string(wd);
 671    elm_smart_scroller_child_pos_get(obj, &x, &y);
 672    elm_smart_scroller_child_viewport_size_get(obj, &w, &h);
 673    if (wd->round)
 674      {
 675         evas_object_geometry_get(wd->main_box, NULL, NULL, &bw, NULL);
 676         if (x > ((w / wd->display_item_num) * (wd->item_count + (wd->display_item_num % 2))))
 677            elm_smart_scroller_child_region_show(wd->scroller,
 678                                                x - ((w / wd->display_item_num) * wd->item_count),
 679                                                y, w, h);
 680         else if (x < 0)
 681            elm_smart_scroller_child_region_show(wd->scroller,
 682                                                x + ((w / wd->display_item_num) * wd->item_count),
 683                                                y, w, h);
 684      }
 685 }
 686
 687 static void
 688 _scroller_stop_cb(void *data, Evas_Object *obj __UNUSED__, void *event_info __UNUSED__)
 689 {
 690    Elm_Diskselector_Item *it;
 691    Widget_Data *wd = data;
 692    Evas_Coord x, w, ow;
 693    Eina_List *l, *list;
 694
 695    if (wd->idler) return;
 696
 697    if (!wd->round)
 698      list = wd->items;
 699    else
 700      list = wd->r_items;
 701
 702    evas_object_geometry_get(wd->scroller, NULL, NULL, &ow, NULL);
 703    EINA_LIST_FOREACH(list, l, it)
 704      {
 705         evas_object_geometry_get(VIEW(it), &x, NULL, &w, NULL);
 706         if (abs((int)(ow / 2 - (int)(x + w / 2))) < 10) break;
 707      }
 708
 709    if (!it) return;
 710    _select_item(it);
 711 }
 712
 713 static Eina_Bool
 714 _move_scroller(void *data)
 715 {
 716    Evas_Object *obj = data;
 717    Widget_Data *wd;
 718    Eina_List *list, *l;
 719    Elm_Diskselector_Item *dit;
 720    Evas_Coord y, w, h;
 721    int i;
 722
 723    wd = elm_widget_data_get(obj);
 724    if (!wd) return EINA_FALSE;
 725
 726    if (!wd->round)
 727      {
 728         i = 0;
 729         list = wd->items;
 730      }
 731    else
 732      {
 733         i = 1;
 734         list = wd->r_items;
 735      }
 736
 737    EINA_LIST_FOREACH(list, l, dit)
 738      {
 739         if (wd->selected_item == dit)
 740            break;
 741         i++;
 742      }
 743
 744    if (wd->round) i -= CEIL(wd->display_item_num);
 745
 746    if (!dit)
 747      {
 748         wd->selected_item =
 749            (Elm_Diskselector_Item *) eina_list_nth(wd->items, 0);
 750         return EINA_FALSE;
 751      }
 752
 753    evas_object_geometry_get(wd->scroller, NULL, &y, &w, &h);
 754    //move scroller in two steps for getting smooth launching effect.
 755    if (i > 2)
 756      elm_smart_scroller_child_region_show(wd->scroller, w / wd->display_item_num * (i-2), y, w, h);
 757    elm_smart_scroller_region_bring_in(wd->scroller, w / wd->display_item_num * i, y, w, h);
 758
 759    _select_item(dit);
 760    if (wd->idler)
 761      {
 762         ecore_idle_enterer_del(wd->idler);
 763         wd->idler = NULL;
 764      }
 765    wd->init = EINA_TRUE;
 766    _check_string(wd);
 767
 768    return EINA_TRUE;
 769 }
 770
 771 static void
 772 _round_item_del(Widget_Data *wd, Elm_Diskselector_Item *it)
 773 {
 774    if (!it) return;
 775    elm_box_unpack(wd->main_box, VIEW(it));
 776    wd->r_items = eina_list_remove(wd->r_items, it);
 777    eina_stringshare_del(it->label);
 778    elm_widget_item_free(it);
 779 }
 780
 781 static void
 782 _round_items_del(Widget_Data *wd)
 783 {
 784    Eina_List *l;
 785    Elm_Diskselector_Item * it;
 786
 787    _round_item_del(wd, wd->last);
 788    wd->last = NULL;
 789    _round_item_del(wd, wd->s_last);
 790    wd->s_last = NULL;
 791    _round_item_del(wd, wd->second);
 792    wd->second = NULL;
 793    _round_item_del(wd, wd->first);
 794    wd->first = NULL;
 795
 796    EINA_LIST_FOREACH(wd->under_items, l, it)
 797      {
 798         _round_item_del(wd, it);
 799      }
 800    wd->under_items = eina_list_free(wd->under_items);
 801
 802    EINA_LIST_FOREACH(wd->over_items, l, it)
 803      {
 804         _round_item_del(wd, it);
 805      }
 806    wd->over_items = eina_list_free(wd->over_items);
 807 }
 808
 809 static void
 810 _round_items_add(Widget_Data *wd)
 811 {
 812    Elm_Diskselector_Item *dit;
 813    Elm_Diskselector_Item *it;
 814    Elm_Diskselector_Item *temp_it;
 815    int i = 0;
 816    dit = it = eina_list_nth(wd->items, 0);
 817    if (!dit) return;
 818
 819    if (!wd->first)
 820      {
 821         wd->first = _item_new(WIDGET(it), it->icon, it->label, it->func,
 822                               it->base.data);
 823         wd->first->node = it->node;
 824         wd->r_items = eina_list_append(wd->r_items, wd->first);
 825      }
 826
 827    it = eina_list_nth(wd->items, 1);
 828    if (!it)
 829      it = dit;
 830    if (!wd->second)
 831      {
 832         wd->second = _item_new(WIDGET(it), it->icon, it->label, it->func,
 833                                it->base.data);
 834         wd->second->node = it->node;
 835         wd->r_items = eina_list_append(wd->r_items, wd->second);
 836      }
 837
 838    // if more than 3 itmes should be displayed
 839    for (i = 2; i < CEIL(wd->display_item_num); i++)
 840      {
 841         it = eina_list_nth(wd->items, i);
 842         if (!it) it = dit;
 843         temp_it = _item_new(WIDGET(it), it->icon, it->label, it->func, it->base.data);
 844         wd->over_items = eina_list_append(wd->over_items, temp_it);
 845         wd->r_items = eina_list_append(wd->r_items, temp_it);
 846      }
 847
 848    it = eina_list_nth(wd->items, wd->item_count - 1);
 849    if (!it)
 850      it = dit;
 851    if (!wd->last)
 852      {
 853         wd->last = _item_new(WIDGET(it), it->icon, it->label, it->func,
 854                              it->base.data);
 855         wd->last->node = it->node;
 856         wd->r_items = eina_list_prepend(wd->r_items, wd->last);
 857      }
 858
 859    it = eina_list_nth(wd->items, wd->item_count - 2);
 860    if (!it)
 861      it = dit;
 862    if (!wd->s_last)
 863      {
 864         wd->s_last = _item_new(WIDGET(it), it->icon, it->label, it->func,
 865                                it->base.data);
 866         wd->s_last->node = it->node;
 867         wd->r_items = eina_list_prepend(wd->r_items, wd->s_last);
 868      }
 869
 870    // if more than 3 itmes should be displayed
 871    for (i = 3; i <= CEIL(wd->display_item_num); i++)
 872      {
 873         it = eina_list_nth(wd->items, wd->item_count - i);
 874         if (!it) it = dit;
 875         temp_it = _item_new(WIDGET(it), it->icon, it->label, it->func, it->base.data);
 876         wd->under_items = eina_list_append(wd->under_items, temp_it);
 877         wd->r_items = eina_list_prepend(wd->r_items, temp_it);
 878      }
 879 }
 880
 881 static void
 882 _item_icon_set(Elm_Diskselector_Item *it, Evas_Object *icon)
 883 {
 884    if (it->icon == icon) return;
 885    if (it->icon)
 886      evas_object_del(it->icon);
 887    it->icon = icon;
 888    if (VIEW(it))
 889      {
 890         evas_object_size_hint_min_set(it->icon, 24, 24);
 891         evas_object_size_hint_max_set(it->icon, 40, 40);
 892         edje_object_part_swallow(VIEW(it), "elm.swallow.icon", it->icon);
 893         evas_object_show(it->icon);
 894         elm_widget_sub_object_add(WIDGET(it), it->icon);
 895      }
 896 }
 897
 898 static void
 899 _check_identical_item(Elm_Diskselector_Item *it, Evas_Object *icon)
 900 {
 901    Widget_Data *wd;
 902    Elm_Diskselector_Item *dit;
 903    Eina_List *l;
 904    int idx = 0;
 905    int ic = 0;
 906    int ac = 0;
 907
 908    wd = elm_widget_data_get(WIDGET(it));
 909    if (!wd) return;
 910
 911    if (wd->round)
 912      {
 913         // Get index from indentical item from round items
 914         EINA_LIST_FOREACH(wd->r_items, l, dit)
 915           {
 916              if (it == dit) break;
 917              idx++;
 918           }
 919
 920         // No item to match
 921         ic = eina_list_count(wd->r_items);
 922         if (idx >= ic) return;
 923         dit = NULL;
 924
 925         // Number of added items: CEIL(wd->display_item_num)
 926         ac = CEIL(wd->display_item_num);
 927
 928         if (((idx >= 0) && (idx < ac)) ||
 929             ((idx >= ac) && (idx < (2 * ac))))
 930           {
 931               // Selected item: under, low region
 932              dit = eina_list_nth(wd->r_items,
 933                                  idx + ic - (2 * ac));
 934           }
 935         else if (((idx >= (ic - ac)) && (idx < ic)) ||
 936                  ((idx >= (ic - (2 * ac))) && (idx < ic - ac)))
 937           {
 938               // Selected item: over, high region
 939               dit = eina_list_nth(wd->r_items,
 940                                   idx - ic + (2 * ac));
 941           }
 942
 943         if(dit) _item_icon_set(dit, icon);
 944         _sizing_eval(wd->self);
 945      }
 946 }
 947
 948 static void
 949 _item_text_set_hook(Elm_Object_Item *it, const char *part, const char *label)
 950 {
 951    Elm_Diskselector_Item *item;
 952    if (part && strcmp(part, "default")) return;
 953    item = (Elm_Diskselector_Item *)it;
 954    eina_stringshare_replace(&item->label, label);
 955    edje_object_part_text_set(VIEW(item), "elm.text", item->label);
 956 }
 957
 958 static const char *
 959 _item_text_get_hook(const Elm_Object_Item *it, const char *part)
 960 {
 961    if (part && strcmp(part, "default")) return NULL;
 962    return ((Elm_Diskselector_Item *)it)->label;
 963 }
 964
 965 static void
 966 _item_content_set_hook(Elm_Object_Item *it,
 967                        const char *part,
 968                        Evas_Object *content)
 969 {
 970    if (part && strcmp(part, "icon")) return;
 971    _item_icon_set((Elm_Diskselector_Item *)it, content);
 972    _check_identical_item((Elm_Diskselector_Item *)it, content);
 973 }
 974
 975 static Evas_Object *
 976 _item_content_get_hook(const Elm_Object_Item *it, const char *part)
 977 {
 978    if (part && strcmp(part, "icon")) return NULL;
 979    return ((Elm_Diskselector_Item *)it)->icon;
 980 }
 981
 982 EAPI Evas_Object *
 983 elm_diskselector_add(Evas_Object *parent)
 984 {
 985    Evas *e;
 986    Evas_Object *obj;
 987    Widget_Data *wd;
 988
 989    ELM_WIDGET_STANDARD_SETUP(wd, Widget_Data, parent, e, obj, NULL);
 990
 991    ELM_SET_WIDTYPE(widtype, "diskselector");
 992    elm_widget_type_set(obj, "diskselector");
 993    elm_widget_sub_object_add(parent, obj);
 994    elm_widget_data_set(obj, wd);
 995    elm_widget_del_hook_set(obj, _del_hook);
 996    elm_widget_del_pre_hook_set(obj, _del_pre_hook);
 997    elm_widget_theme_hook_set(obj, _theme_hook);
 998    elm_widget_can_focus_set(obj, EINA_TRUE);
 999    elm_widget_on_focus_hook_set(obj, _on_focus_hook, NULL);
1000    elm_widget_event_hook_set(obj, _event_hook);
1001
1002    wd->self = obj;
1003    wd->item_count = 0;
1004    wd->round = EINA_FALSE;
1005    wd->init = EINA_FALSE;
1006    wd->len_side = 3;
1007    wd->display_item_num_by_api = EINA_FALSE;
1008
1009    wd->scroller = elm_smart_scroller_add(e);
1010    elm_smart_scroller_widget_set(wd->scroller, obj);
1011    _theme_hook(obj);
1012    elm_widget_resize_object_set(obj, wd->scroller);
1013    elm_smart_scroller_policy_set(wd->scroller, ELM_SMART_SCROLLER_POLICY_OFF,
1014                                  ELM_SMART_SCROLLER_POLICY_OFF);
1015    elm_smart_scroller_bounce_allow_set(wd->scroller, EINA_TRUE, EINA_FALSE);
1016    evas_object_smart_callback_add(wd->scroller, "scroll", _scroller_move_cb,
1017                                   wd);
1018    evas_object_smart_callback_add(wd->scroller, "animate,stop",
1019                                   _scroller_stop_cb, wd);
1020    _elm_theme_object_set(obj, wd->scroller, "diskselector", "base",
1021                          "default");
1022    evas_object_event_callback_add(wd->scroller, EVAS_CALLBACK_RESIZE,
1023                                   _diskselector_object_resize, obj);
1024
1025    wd->main_box = elm_box_add(parent);
1026    elm_box_horizontal_set(wd->main_box, EINA_TRUE);
1027    elm_box_homogeneous_set(wd->main_box, EINA_TRUE);
1028    evas_object_size_hint_weight_set(wd->main_box, EVAS_HINT_EXPAND,
1029                                     EVAS_HINT_EXPAND);
1030    evas_object_size_hint_align_set(wd->main_box, EVAS_HINT_FILL,
1031                                    EVAS_HINT_FILL);
1032    _elm_theme_object_set(obj, wd->main_box, "diskselector", "base",
1033                          "default");
1034    elm_widget_sub_object_add(obj, wd->main_box);
1035
1036    elm_smart_scroller_child_set(wd->scroller, wd->main_box);
1037
1038    wd->left_blank = edje_object_add(evas_object_evas_get(obj));
1039    _elm_theme_object_set(obj, wd->left_blank, "diskselector", "item",
1040                          "default");
1041    evas_object_size_hint_weight_set(wd->left_blank, EVAS_HINT_EXPAND,
1042                                     EVAS_HINT_EXPAND);
1043    evas_object_size_hint_align_set(wd->left_blank, EVAS_HINT_FILL,
1044                                    EVAS_HINT_FILL);
1045    elm_box_pack_end(wd->main_box, wd->left_blank);
1046    evas_object_show(wd->left_blank);
1047
1048    wd->right_blank = edje_object_add(evas_object_evas_get(obj));
1049    _elm_theme_object_set(obj, wd->right_blank, "diskselector", "item",
1050                          "default");
1051    evas_object_size_hint_weight_set(wd->right_blank, EVAS_HINT_EXPAND,
1052                                     EVAS_HINT_EXPAND);
1053    evas_object_size_hint_align_set(wd->right_blank, EVAS_HINT_FILL,
1054                                    EVAS_HINT_FILL);
1055    elm_box_pack_end(wd->main_box, wd->right_blank);
1056    evas_object_show(wd->right_blank);
1057
1058    _theme_data_get(wd);
1059
1060    evas_object_smart_callback_add(obj, "sub-object-del", _sub_del, obj);
1061    evas_object_smart_callbacks_descriptions_set(obj, _signals);
1062    _sizing_eval(obj);
1063    return obj;
1064 }
1065
1066 EAPI Eina_Bool
1067 elm_diskselector_round_enabled_get(const Evas_Object *obj)
1068 {
1069    ELM_CHECK_WIDTYPE(obj, widtype) EINA_FALSE;
1070    Widget_Data *wd = elm_widget_data_get(obj);
1071    if (!wd) return EINA_FALSE;
1072    return wd->round;
1073 }
1074
1075 EAPI void
1076 elm_diskselector_round_enabled_set(Evas_Object * obj, Eina_Bool enabled)
1077 {
1078    Eina_List *elist;
1079    Elm_Diskselector_Item *it;
1080
1081    ELM_CHECK_WIDTYPE(obj, widtype);
1082    Widget_Data *wd = elm_widget_data_get(obj);
1083    if (!wd) return;
1084
1085    if (wd->round == enabled)
1086      return;
1087
1088    wd->round = !!enabled;
1089    if (enabled)
1090      {
1091         wd->r_items = eina_list_clone(wd->items);
1092         elm_box_unpack(wd->main_box, wd->left_blank);
1093         evas_object_hide(wd->left_blank);
1094         elm_box_unpack(wd->main_box, wd->right_blank);
1095         evas_object_hide(wd->right_blank);
1096         if (!wd->items)
1097           return;
1098
1099         _round_items_add(wd);
1100
1101         if (wd->last)
1102           elm_box_pack_start(wd->main_box, wd->VIEW(last));
1103         if (wd->s_last)
1104           elm_box_pack_start(wd->main_box, wd->VIEW(s_last));
1105
1106         // if more than 3 items should be displayed
1107         EINA_LIST_FOREACH(wd->under_items, elist, it)
1108            elm_box_pack_start(wd->main_box, VIEW(it));
1109
1110         if (wd->first)
1111           elm_box_pack_end(wd->main_box, wd->VIEW(first));
1112         if (wd->second)
1113           elm_box_pack_end(wd->main_box, wd->VIEW(second));
1114
1115         // if more than 3 items should be displayed
1116         EINA_LIST_FOREACH(wd->over_items, elist, it)
1117            elm_box_pack_end(wd->main_box, VIEW(it));
1118      }
1119    else
1120      {
1121         _round_items_del(wd);
1122         elm_box_pack_start(wd->main_box, wd->left_blank);
1123         elm_box_pack_end(wd->main_box, wd->right_blank);
1124         eina_list_free(wd->r_items);
1125         wd->r_items = NULL;
1126      }
1127
1128    _selected_item_indicate(wd->selected_item);
1129    _sizing_eval(obj);
1130 }
1131
1132 EAPI int
1133 elm_diskselector_side_text_max_length_get(const Evas_Object *obj)
1134 {
1135    ELM_CHECK_WIDTYPE(obj, widtype) 0;
1136    Widget_Data *wd = elm_widget_data_get(obj);
1137    if (!wd) return 0;
1138    return wd->len_side;
1139 }
1140
1141 EAPI void
1142 elm_diskselector_side_text_max_length_set(Evas_Object *obj, int len)
1143 {
1144    ELM_CHECK_WIDTYPE(obj, widtype);
1145    Widget_Data *wd = elm_widget_data_get(obj);
1146    if (!wd) return;
1147    wd->len_side = len;
1148 }
1149
1150 EAPI void
1151 elm_diskselector_bounce_set(Evas_Object *obj, Eina_Bool h_bounce, Eina_Bool v_bounce)
1152 {
1153    ELM_CHECK_WIDTYPE(obj, widtype);
1154    Widget_Data *wd = elm_widget_data_get(obj);
1155    if (!wd) return;
1156    if (wd->scroller)
1157      elm_smart_scroller_bounce_allow_set(wd->scroller, h_bounce, v_bounce);
1158 }
1159
1160 EAPI void
1161 elm_diskselector_bounce_get(const Evas_Object *obj, Eina_Bool *h_bounce, Eina_Bool *v_bounce)
1162 {
1163    ELM_CHECK_WIDTYPE(obj, widtype);
1164    Widget_Data *wd = elm_widget_data_get(obj);
1165    if (!wd) return;
1166    elm_smart_scroller_bounce_allow_get(wd->scroller, h_bounce, v_bounce);
1167 }
1168
1169 EAPI void
1170 elm_diskselector_scroller_policy_get(const Evas_Object *obj, Elm_Scroller_Policy *policy_h, Elm_Scroller_Policy *policy_v)
1171 {
1172    ELM_CHECK_WIDTYPE(obj, widtype);
1173    Elm_Smart_Scroller_Policy s_policy_h, s_policy_v;
1174    Widget_Data *wd = elm_widget_data_get(obj);
1175    if ((!wd) || (!wd->scroller)) return;
1176    elm_smart_scroller_policy_get(wd->scroller, &s_policy_h, &s_policy_v);
1177    *policy_h = (Elm_Scroller_Policy) s_policy_h;
1178    *policy_v = (Elm_Scroller_Policy) s_policy_v;
1179 }
1180
1181 EAPI void
1182 elm_diskselector_scroller_policy_set(Evas_Object *obj, Elm_Scroller_Policy policy_h, Elm_Scroller_Policy policy_v)
1183 {
1184    ELM_CHECK_WIDTYPE(obj, widtype);
1185    Widget_Data *wd = elm_widget_data_get(obj);
1186    if ((!wd) || (!wd->scroller)) return;
1187    if ((policy_h >= ELM_SCROLLER_POLICY_LAST) ||
1188        (policy_v >= ELM_SCROLLER_POLICY_LAST))
1189      return;
1190    elm_smart_scroller_policy_set(wd->scroller, policy_h, policy_v);
1191 }
1192
1193 EAPI void
1194 elm_diskselector_clear(Evas_Object *obj)
1195 {
1196    ELM_CHECK_WIDTYPE(obj, widtype);
1197    Widget_Data *wd = elm_widget_data_get(obj);
1198    Elm_Diskselector_Item *it;
1199
1200    if (!wd) return;
1201    if (!wd->items) return;
1202
1203    wd->selected_item = NULL;
1204    EINA_LIST_FREE(wd->items, it)
1205      {
1206         _item_del(it);
1207         elm_widget_item_free(it);
1208      }
1209    _round_items_del(wd);
1210    _sizing_eval(obj);
1211 }
1212
1213 EAPI const Eina_List *
1214 elm_diskselector_items_get(const Evas_Object *obj)
1215 {
1216    ELM_CHECK_WIDTYPE(obj, widtype) NULL;
1217    Widget_Data *wd = elm_widget_data_get(obj);
1218    if (!wd) return NULL;
1219    return wd->items;
1220 }
1221
1222 EAPI Elm_Object_Item *
1223 elm_diskselector_item_append(Evas_Object *obj, const char *label, Evas_Object *icon, Evas_Smart_Cb func, const void *data)
1224 {
1225    Elm_Diskselector_Item *it;
1226    ELM_CHECK_WIDTYPE(obj, widtype) NULL;
1227    Widget_Data *wd = elm_widget_data_get(obj);
1228    if (!wd) return NULL;
1229
1230    it = _item_new(obj, icon, label, func, data);
1231    wd->items = eina_list_append(wd->items, it);
1232    it->node = eina_list_last(wd->items);
1233    wd->item_count++;
1234    if (wd->round)
1235      {
1236         _round_items_del(wd);
1237         wd->r_items = eina_list_append(wd->r_items, it);
1238         _round_items_add(wd);
1239         if (wd->last)
1240           elm_box_pack_start(wd->main_box, wd->VIEW(last));
1241         if (wd->s_last)
1242           elm_box_pack_start(wd->main_box, wd->VIEW(s_last));
1243         elm_box_pack_end(wd->main_box, VIEW(it));
1244         if (wd->first)
1245           elm_box_pack_end(wd->main_box, wd->VIEW(first));
1246         if (wd->second)
1247           elm_box_pack_end(wd->main_box, wd->VIEW(second));
1248      }
1249    else
1250      {
1251         elm_box_unpack(wd->main_box, wd->right_blank);
1252         elm_box_pack_end(wd->main_box, VIEW(it));
1253         elm_box_pack_end(wd->main_box, wd->right_blank);
1254      }
1255    if (!wd->selected_item)
1256      wd->selected_item = it;
1257    if (!wd->idler)
1258      wd->idler = ecore_idle_enterer_before_add(_move_scroller, obj);
1259    _sizing_eval(obj);
1260    return (Elm_Object_Item *)it;
1261 }
1262
1263 EAPI Elm_Object_Item *
1264 elm_diskselector_selected_item_get(const Evas_Object *obj)
1265 {
1266    ELM_CHECK_WIDTYPE(obj, widtype) NULL;
1267    Widget_Data *wd = elm_widget_data_get(obj);
1268    if (!wd) return NULL;
1269    return (Elm_Object_Item *) wd->selected_item;
1270 }
1271
1272 EAPI void
1273 elm_diskselector_item_selected_set(Elm_Object_Item *it, Eina_Bool selected)
1274 {
1275    ELM_OBJ_ITEM_CHECK_OR_RETURN(it);
1276    Widget_Data *wd;
1277    Elm_Diskselector_Item *item = (Elm_Diskselector_Item *)it;
1278    wd = elm_widget_data_get(WIDGET(item));
1279    if (!wd) return;
1280
1281    if ((wd->selected_item == item) && (selected))
1282      return;
1283
1284    if ((wd->selected_item == item) && (!selected))
1285      wd->selected_item = eina_list_data_get(wd->items);
1286    else
1287      {
1288         wd->selected_item = item;
1289         _selected_item_indicate(wd->selected_item);
1290      }
1291
1292    if (!wd->idler)
1293      wd->idler = ecore_idle_enterer_before_add(_move_scroller, WIDGET(item));
1294 }
1295
1296 EAPI Eina_Bool
1297 elm_diskselector_item_selected_get(const Elm_Object_Item *it)
1298 {
1299    ELM_OBJ_ITEM_CHECK_OR_RETURN(it, EINA_FALSE);
1300    Widget_Data *wd = elm_widget_data_get(WIDGET(it));
1301    if (!wd) return EINA_FALSE;
1302    return (wd->selected_item == ((Elm_Diskselector_Item *)it));
1303 }
1304
1305 EAPI Elm_Object_Item *
1306 elm_diskselector_item_prev_get(const Elm_Object_Item *it)
1307 {
1308    ELM_OBJ_ITEM_CHECK_OR_RETURN(it, NULL);
1309    Elm_Diskselector_Item *item = (Elm_Diskselector_Item *)it;
1310    if (item->node->prev) return item->node->prev->data;
1311    else return NULL;
1312 }
1313
1314 EAPI Elm_Object_Item *
1315 elm_diskselector_item_next_get(const Elm_Object_Item *it)
1316 {
1317    ELM_OBJ_ITEM_CHECK_OR_RETURN(it, NULL);
1318    Elm_Diskselector_Item *item = (Elm_Diskselector_Item *)it;
1319    if (item->node->next) return item->node->next->data;
1320    else return NULL;
1321 }
1322
1323 EAPI Elm_Object_Item *
1324 elm_diskselector_first_item_get(const Evas_Object *obj)
1325 {
1326    ELM_CHECK_WIDTYPE(obj, widtype) NULL;
1327    Widget_Data *wd = elm_widget_data_get(obj);
1328    if (!wd || !wd->items) return NULL;
1329    return eina_list_data_get(wd->items);
1330 }
1331
1332 EAPI Elm_Object_Item *
1333 elm_diskselector_last_item_get(const Evas_Object *obj)
1334 {
1335    ELM_CHECK_WIDTYPE(obj, widtype) NULL;
1336    Widget_Data *wd = elm_widget_data_get(obj);
1337    if (!wd || !wd->items) return NULL;
1338    return eina_list_data_get(eina_list_last(wd->items));
1339 }
1340
1341 EAPI void
1342 elm_diskselector_display_item_num_set(Evas_Object *obj, int num)
1343 {
1344    ELM_CHECK_WIDTYPE(obj, widtype);
1345    Widget_Data *wd = elm_widget_data_get(obj);
1346    if (!wd) return;
1347    if (num < DISPLAY_ITEM_NUM_MIN) num = DISPLAY_ITEM_NUM_MIN;
1348    wd->display_item_num = num;
1349    wd->display_item_num_by_api = EINA_TRUE;
1350 }
1351
1352 EAPI int
1353 elm_diskselector_display_item_num_get(const Evas_Object *item)
1354 {
1355    ELM_CHECK_WIDTYPE(item, widtype) (-1);
1356    Widget_Data *wd = elm_widget_data_get(item);
1357    if (!wd) return -1;
1358    return wd->display_item_num;
1359 }