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 char SIG_SCROLL_ANIM_START[] = "scroll,anim,start";
  81 static const char SIG_SCROLL_ANIM_STOP[] = "scroll,anim,stop";
  82 static const char SIG_SCROLL_DRAG_START[] = "scroll,drag,start";
  83 static const char SIG_SCROLL_DRAG_STOP[] = "scroll,drag,stop";
  84
  85 static const Evas_Smart_Cb_Description _signals[] = {
  86        {SIG_SELECTED, ""},
  87        {SIG_SCROLL_ANIM_START, ""},
  88        {SIG_SCROLL_ANIM_STOP, ""},
  89        {SIG_SCROLL_DRAG_START, ""},
  90        {SIG_SCROLL_DRAG_STOP, ""},
  91        {NULL, NULL}
  92 };
  93
  94 static void
  95 _diskselector_object_resize(void *data, Evas *e __UNUSED__, Evas_Object *obj, void *event_info __UNUSED__)
  96 {
  97    Widget_Data *wd;
  98    Evas_Coord w, h;
  99
 100    wd = elm_widget_data_get(data);
 101    if (!wd) return;
 102
 103    if ((wd->minw == -1) && (wd->minh == -1))
 104       elm_coords_finger_size_adjust(6, &wd->minw, 1, &wd->minh);
 105    edje_object_size_min_restricted_calc
 106       (elm_smart_scroller_edje_object_get
 107           (wd->scroller), &wd->minw, &wd->minh, wd->minw, wd->minh);
 108    evas_object_size_hint_min_set(obj, wd->minw, wd->minh);
 109    evas_object_size_hint_max_set(obj, -1, -1);
 110
 111    evas_object_geometry_get(wd->scroller, NULL, NULL, &w, &h);
 112    if (wd->round)
 113      evas_object_resize(wd->main_box, (w / wd->display_item_num) * (wd->item_count + (CEIL(wd->display_item_num) * 2)), h);
 114    else
 115      evas_object_resize(wd->main_box, (w / wd->display_item_num) * (wd->item_count + CEIL(wd->display_item_num)), h);
 116
 117    elm_smart_scroller_paging_set(wd->scroller, 0, 0,
 118                                  (int)(w / wd->display_item_num), 0);
 119
 120    if (!wd->idler)
 121      wd->idler = ecore_idle_enterer_before_add(_move_scroller, data);
 122 }
 123
 124 static void
 125 _item_del(Elm_Diskselector_Item *item)
 126 {
 127    if (!item) return;
 128    eina_stringshare_del(item->label);
 129    if (item->icon)
 130      evas_object_del(item->icon);
 131 }
 132
 133 static int
 134 _count_letter(const char *str)
 135 {
 136    int pos = 0;
 137    int code = 0, chnum;
 138
 139    for (chnum = 0; ; chnum++)
 140      {
 141         pos = evas_string_char_next_get(str, pos, &code);
 142         if (code == 0) break;
 143      }
 144    return chnum;
 145 }
 146
 147 static int
 148 _check_letter(const char *str, int length)
 149 {
 150    int pos = 0;
 151    int code = 0, chnum;
 152
 153    for (chnum = 0; ; chnum++)
 154      {
 155         if (chnum == length) break;
 156         pos = evas_string_char_next_get(str, pos, &code);
 157         if (code == 0) break;
 158      }
 159    return pos;
 160 }
 161
 162 static Eina_Bool
 163 _check_string(void *data)
 164 {
 165    int mid, steps, length, diff;
 166    Elm_Diskselector_Item *it;
 167    Eina_List *list, *l;
 168    Evas_Coord ox, ow;
 169    char buf[1024];
 170    Widget_Data *wd = data;
 171
 172    evas_object_geometry_get(wd->scroller, &ox, NULL, &ow, NULL);
 173    if (ow <= 0)
 174      return EINA_FALSE;
 175    if (!wd->init)
 176      return EINA_FALSE;
 177    if (!wd->round)
 178      list = wd->items;
 179    else
 180      list = wd->r_items;
 181
 182    EINA_LIST_FOREACH(list, l, it)
 183      {
 184         Evas_Coord x, w;
 185         int len;
 186         evas_object_geometry_get(VIEW(it), &x, NULL, &w, NULL);
 187         /* item not visible */
 188         if ((x + w <= ox) || (x >= ox + ow))
 189           continue;
 190
 191         len = _count_letter(it->label);
 192 //        // FIXME: len should be # of ut8f letters. ie count using utf8 string walk, not stringshare len
 193 //        len = eina_stringshare_strlen(it->label);
 194
 195         if (x <= ox + 5)
 196           edje_object_signal_emit(VIEW(it), "elm,state,left_side",
 197                                   "elm");
 198         else if (x + w >= ox + ow - 5)
 199           edje_object_signal_emit(VIEW(it), "elm,state,right_side",
 200                                   "elm");
 201         else
 202           {
 203              if ((wd->len_threshold) && (len > wd->len_threshold))
 204                edje_object_signal_emit(VIEW(it), "elm,state,center_small",
 205                                        "elm");
 206              else
 207                edje_object_signal_emit(VIEW(it), "elm,state,center",
 208                                        "elm");
 209           }
 210
 211         // if len is les that the limit len, skip anyway
 212         if (len <= wd->len_side)
 213           continue;
 214
 215         steps = len - wd->len_side + 1;
 216         mid = x + w / 2;
 217         if (mid <= ox + ow / 2)
 218           diff = (ox + ow / 2) - mid;
 219         else
 220           diff = mid - (ox + ow / 2);
 221
 222         length = len - (int)(diff * steps / (ow / 3));
 223         length = MAX(length, wd->len_side);
 224         // limit string len to "length" ut8f chars
 225         length = _check_letter(it->label, length);
 226         // cut it off at byte mark returned form _check_letter
 227         strncpy(buf, it->label, length);
 228         buf[length] = '\0';
 229         edje_object_part_text_escaped_set(VIEW(it), "elm.text", buf);
 230      }
 231
 232    if (wd->check_idler)
 233      ecore_idle_enterer_del(wd->check_idler);
 234    wd->check_idler = NULL;
 235    return EINA_FALSE;
 236 }
 237
 238 static Eina_Bool
 239 _item_del_pre_hook(Elm_Object_Item *it)
 240 {
 241    Elm_Diskselector_Item *item, *item2, *dit;
 242    Eina_List *l;
 243    int i = 0;
 244    Widget_Data *wd;
 245    item = (Elm_Diskselector_Item *)it;
 246    wd = elm_widget_data_get(WIDGET(item));
 247    if (!wd) return EINA_FALSE;
 248
 249    elm_box_unpack(wd->main_box, VIEW(item));
 250
 251    if (wd->round)
 252      wd->r_items = eina_list_remove(wd->r_items, item);
 253
 254    wd->items = eina_list_remove(wd->items, item);
 255
 256    if (wd->selected_item == item)
 257      {
 258         dit = (Elm_Diskselector_Item *) eina_list_nth(wd->items, 0);
 259         if (dit != item)
 260           wd->selected_item = dit;
 261         else
 262           wd->selected_item = eina_list_nth(wd->items, 1);
 263
 264         _selected_item_indicate(wd->selected_item);
 265      }
 266
 267    _item_del(item);
 268    wd->item_count -= 1;
 269
 270    if (wd->round)
 271      {
 272         if (!wd->item_count)
 273           {
 274              evas_object_hide(wd->VIEW(first));
 275              evas_object_hide(wd->VIEW(second));
 276              evas_object_hide(wd->VIEW(last));
 277              evas_object_hide(wd->VIEW(s_last));
 278
 279              EINA_LIST_FOREACH(wd->under_items, l, item2)
 280                evas_object_hide(VIEW(item2));
 281
 282              EINA_LIST_FOREACH(wd->over_items, l, item2)
 283                evas_object_hide(VIEW(item2));
 284           }
 285         else
 286           {
 287              dit = eina_list_nth(wd->items, 0);
 288              if (dit)
 289                {
 290                   eina_stringshare_replace(&wd->first->label, dit->label);
 291                   edje_object_part_text_escaped_set(wd->VIEW(first), "elm.text",
 292                                             wd->first->label);
 293                }
 294              dit = eina_list_nth(wd->items, 1);
 295              if (dit)
 296                {
 297                   eina_stringshare_replace(&wd->second->label, dit->label);
 298                   edje_object_part_text_escaped_set(wd->VIEW(second), "elm.text",
 299                                             wd->second->label);
 300                }
 301              // if more than 3 itmes should be displayed
 302              for (i = 2; i < CEIL(wd->display_item_num); i++)
 303                {
 304                   dit = eina_list_nth(wd->items, i);
 305                   item2 = eina_list_nth(wd->over_items, i - 2);
 306                   eina_stringshare_replace(&item2->label, dit->label);
 307                   edje_object_part_text_escaped_set(VIEW(item2), "elm.text", item2->label);
 308                }
 309
 310              dit = eina_list_nth(wd->items, eina_list_count(wd->items) - 1);
 311              if (dit)
 312                {
 313                   eina_stringshare_replace(&wd->last->label, dit->label);
 314                   edje_object_part_text_escaped_set(wd->VIEW(last), "elm.text",
 315                                             wd->last->label);
 316                }
 317              dit = eina_list_nth(wd->items, eina_list_count(wd->items) - 2);
 318              if (dit)
 319                {
 320                   eina_stringshare_replace(&wd->s_last->label, dit->label);
 321                   edje_object_part_text_escaped_set(wd->VIEW(s_last), "elm.text",
 322                                             wd->s_last->label);
 323                }
 324              // if more than 3 itmes should be displayed
 325              for (i = 3; i <= CEIL(wd->display_item_num); i++)
 326                {
 327                   dit = eina_list_nth(wd->items, wd->item_count - i);
 328                   item2 = eina_list_nth(wd->under_items, i - 3);
 329                   eina_stringshare_replace(&item2->label, dit->label);
 330                   edje_object_part_text_escaped_set(VIEW(item2), "elm.text",
 331                                             item2->label);
 332                }
 333           }
 334      }
 335    wd->check_idler = ecore_idle_enterer_before_add(_check_string, wd);
 336    _sizing_eval(wd->self);
 337
 338    return EINA_TRUE;
 339 }
 340
 341 static Elm_Diskselector_Item *
 342 _item_new(Evas_Object *obj, Evas_Object *icon, const char *label, Evas_Smart_Cb func, const void *data)
 343 {
 344    Elm_Diskselector_Item *it;
 345    const char *style = elm_widget_style_get(obj);
 346
 347    it = elm_widget_item_new(obj, Elm_Diskselector_Item);
 348    if (!it) return NULL;
 349
 350    elm_widget_item_del_pre_hook_set(it, _item_del_pre_hook);
 351    elm_widget_item_text_set_hook_set(it, _item_text_set_hook);
 352    elm_widget_item_text_get_hook_set(it, _item_text_get_hook);
 353    elm_widget_item_content_set_hook_set(it, _item_content_set_hook);
 354    elm_widget_item_content_get_hook_set(it, _item_content_get_hook);
 355
 356    it->label = eina_stringshare_add(label);
 357    it->icon = icon;
 358    it->func = func;
 359    it->base.data = data;
 360    VIEW(it) = edje_object_add(evas_object_evas_get(obj));
 361    _elm_theme_object_set(obj, VIEW(it), "diskselector", "item", style);
 362    evas_object_size_hint_weight_set(VIEW(it), EVAS_HINT_EXPAND,
 363                                     EVAS_HINT_EXPAND);
 364    evas_object_size_hint_align_set(VIEW(it), EVAS_HINT_FILL,
 365                                    EVAS_HINT_FILL);
 366    evas_object_show(VIEW(it));
 367
 368    if (it->label)
 369      {
 370         edje_object_part_text_escaped_set(VIEW(it), "elm.text", it->label);
 371         edje_object_signal_callback_add(VIEW(it), "elm,action,click", "", _item_click_cb, it);
 372      }
 373    if (it->icon)
 374      {
 375         evas_object_size_hint_min_set(it->icon, 24, 24);
 376         evas_object_size_hint_max_set(it->icon, 40, 40);
 377         edje_object_part_swallow(VIEW(it), "elm.swallow.icon", it->icon);
 378         evas_object_show(it->icon);
 379         elm_widget_sub_object_add(obj, it->icon);
 380      }
 381    return it;
 382 }
 383
 384 static void
 385 _theme_data_get(Widget_Data *wd)
 386 {
 387    const char* str;
 388    Evas_Object *parent;
 389    str = edje_object_data_get(wd->right_blank, "len_threshold");
 390    if (str) wd->len_threshold = MAX(0, atoi(str));
 391    else wd->len_threshold = 0;
 392
 393    if (!wd->display_item_num_by_api)
 394      {
 395         str = edje_object_data_get(wd->right_blank, "display_item_num");
 396         if (str) wd->display_item_num = MAX(DISPLAY_ITEM_NUM_MIN, atoi(str));
 397         else wd->display_item_num = DISPLAY_ITEM_NUM_MIN;
 398      }
 399
 400    str = edje_object_data_get(wd->right_blank, "min_width");
 401    if (str) wd->minw = MAX(-1, atoi(str)) * elm_scale_get();
 402    else
 403      {
 404         parent = elm_widget_parent_widget_get(wd->self);
 405         if (!parent) wd->minw = -1;
 406         else evas_object_geometry_get(parent, NULL, NULL, &wd->minw, NULL);
 407      }
 408
 409    str = edje_object_data_get(wd->right_blank, "min_height");
 410    if (str) wd->minh = MAX(-1, atoi(str)) * elm_scale_get();
 411    else wd->minh = -1;
 412 }
 413
 414 static void
 415 _del_hook(Evas_Object * obj)
 416 {
 417    Widget_Data *wd = elm_widget_data_get(obj);
 418    if (!wd) return;
 419    if (wd->idler)
 420      {
 421         ecore_idle_enterer_del(wd->idler);
 422         wd->idler = NULL;
 423      }
 424    free(wd);
 425 }
 426
 427 static void
 428 _del_pre_hook(Evas_Object * obj)
 429 {
 430    Elm_Diskselector_Item *it;
 431    Eina_List *l;
 432
 433    Widget_Data *wd = elm_widget_data_get(obj);
 434    if (!wd) return;
 435
 436    if (wd->left_blank)
 437      evas_object_del(wd->left_blank);
 438    if (wd->right_blank)
 439      evas_object_del(wd->right_blank);
 440    if (wd->last)
 441      {
 442         eina_stringshare_del(wd->last->label);
 443         evas_object_del(wd->VIEW(last));
 444         free(wd->last);
 445      }
 446    if (wd->s_last)
 447      {
 448         eina_stringshare_del(wd->s_last->label);
 449         evas_object_del(wd->VIEW(s_last));
 450         free(wd->s_last);
 451      }
 452    if (wd->second)
 453      {
 454         eina_stringshare_del(wd->second->label);
 455         evas_object_del(wd->VIEW(second));
 456         free(wd->second);
 457      }
 458    if (wd->first)
 459      {
 460         eina_stringshare_del(wd->first->label);
 461         evas_object_del(wd->VIEW(first));
 462         free(wd->first);
 463      }
 464
 465    EINA_LIST_FOREACH(wd->under_items, l, it)
 466      {
 467         if (it)
 468           {
 469              eina_stringshare_del(it->label);
 470              evas_object_del(VIEW(it));
 471              free(it);
 472           }
 473      }
 474
 475    EINA_LIST_FOREACH(wd->over_items, l, it)
 476    {
 477      if (it)
 478         {
 479            eina_stringshare_del(it->label);
 480            evas_object_del(VIEW(it));
 481            free(it);
 482         }
 483    }
 484
 485    EINA_LIST_FREE(wd->items, it)
 486      {
 487         _item_del(it);
 488         elm_widget_item_free(it);
 489      }
 490    eina_list_free(wd->r_items);
 491 }
 492
 493 static void
 494 _sizing_eval(Evas_Object * obj)
 495 {
 496    Widget_Data *wd = elm_widget_data_get(obj);
 497    if (!wd) return;
 498    _diskselector_object_resize(obj, NULL, obj, NULL);
 499 }
 500
 501 static void
 502 _theme_hook(Evas_Object * obj)
 503 {
 504    Eina_List *l;
 505    Elm_Diskselector_Item *it;
 506    Widget_Data *wd = elm_widget_data_get(obj);
 507    if (!wd) return;
 508
 509    if (wd->scroller)
 510      elm_smart_scroller_object_theme_set(obj, wd->scroller, "diskselector",
 511                                          "base", elm_widget_style_get(obj));
 512    if (wd->round)
 513      {
 514         EINA_LIST_FOREACH(wd->r_items, l, it)
 515           {
 516              _elm_theme_object_set(obj, VIEW(it), "diskselector", "item",
 517                                    elm_widget_style_get(obj));
 518              edje_object_part_text_escaped_set(VIEW(it), "elm.text", it->label);
 519           }
 520      }
 521    else
 522      {
 523         EINA_LIST_FOREACH(wd->items, l, it)
 524           {
 525              _elm_theme_object_set(obj, VIEW(it), "diskselector", "item",
 526                                    elm_widget_style_get(obj));
 527              edje_object_part_text_escaped_set(VIEW(it), "elm.text", it->label);
 528           }
 529      }
 530    _elm_theme_object_set(obj, wd->right_blank, "diskselector", "item",
 531                                    elm_widget_style_get(obj));
 532    _theme_data_get(wd);
 533    _sizing_eval(obj);
 534 }
 535
 536 static void
 537 _sub_del(void *data __UNUSED__, Evas_Object * obj, void *event_info)
 538 {
 539    Widget_Data *wd = elm_widget_data_get(obj);
 540    Evas_Object *sub = event_info;
 541    Elm_Diskselector_Item *it;
 542    const Eina_List *l;
 543
 544    if (!wd) return;
 545    if (!sub) abort();
 546    if (sub == wd->scroller)
 547      wd->scroller = NULL;
 548    else
 549      {
 550         EINA_LIST_FOREACH(wd->items, l, it)
 551           {
 552              if (sub == it->icon)
 553                {
 554                   it->icon = NULL;
 555                   _sizing_eval(obj);
 556                   break;
 557                }
 558           }
 559      }
 560 }
 561
 562 static void
 563 _select_item(Elm_Diskselector_Item *it)
 564 {
 565    if (!it) return;
 566    Widget_Data *wd = elm_widget_data_get(WIDGET(it));
 567    wd->selected_item = it;
 568    _selected_item_indicate(wd->selected_item);
 569    if (it->func) it->func((void *)it->base.data, WIDGET(it), it);
 570    evas_object_smart_callback_call(WIDGET(it), SIG_SELECTED, it);
 571 }
 572
 573 static void
 574 _on_focus_hook(void *data __UNUSED__, Evas_Object *obj)
 575 {
 576    Widget_Data *wd = elm_widget_data_get(obj);
 577    if (!wd)
 578      return;
 579
 580    if (elm_widget_focus_get(obj))
 581      {
 582         edje_object_signal_emit(wd->self, "elm,action,focus", "elm");
 583         evas_object_focus_set(wd->self, EINA_TRUE);
 584      }
 585    else
 586      {
 587         edje_object_signal_emit(wd->self, "elm,action,unfocus", "elm");
 588         evas_object_focus_set(wd->self, EINA_FALSE);
 589      }
 590 }
 591
 592 static Eina_Bool
 593 _event_hook(Evas_Object *obj, Evas_Object *src __UNUSED__, Evas_Callback_Type type, void *event_info)
 594 {
 595    if (type != EVAS_CALLBACK_KEY_DOWN) return EINA_FALSE;
 596    Evas_Event_Key_Down *ev = event_info;
 597    Widget_Data *wd = elm_widget_data_get(obj);
 598    if (!wd) return EINA_FALSE;
 599    if (ev->event_flags & EVAS_EVENT_FLAG_ON_HOLD) return EINA_FALSE;
 600    if (elm_widget_disabled_get(obj)) return EINA_FALSE;
 601
 602    Elm_Diskselector_Item *it = NULL;
 603    Eina_List *l;
 604
 605    if (!wd->selected_item) {
 606         ev->event_flags |= EVAS_EVENT_FLAG_ON_HOLD;
 607         return EINA_TRUE;
 608    }
 609
 610    if ((!strcmp(ev->keyname, "Left")) ||
 611        ((!strcmp(ev->keyname, "KP_Left")) && (!ev->string)) ||
 612        (!strcmp(ev->keyname, "Up"))  ||
 613        ((!strcmp(ev->keyname, "KP_Up")) && (!ev->string)))
 614      {
 615         l = wd->selected_item->node->prev;
 616         if ((!l) && (wd->round))
 617           l = eina_list_last(wd->items);
 618      }
 619    else if ((!strcmp(ev->keyname, "Right")) ||
 620             ((!strcmp(ev->keyname, "KP_Right")) && (!ev->string)) ||
 621             (!strcmp(ev->keyname, "Down")) ||
 622             ((!strcmp(ev->keyname, "KP_Down")) && (!ev->string)))
 623      {
 624         l = wd->selected_item->node->next;
 625         if ((!l) && (wd->round))
 626           l = wd->items;
 627      }
 628    else if ((!strcmp(ev->keyname, "Home")) ||
 629             ((!strcmp(ev->keyname, "KP_Home")) && (!ev->string)))
 630      l = wd->items;
 631    else if ((!strcmp(ev->keyname, "End")) ||
 632             ((!strcmp(ev->keyname, "KP_End")) && (!ev->string)))
 633      l = eina_list_last(wd->items);
 634    else return EINA_FALSE;
 635
 636    if (l)
 637      it = eina_list_data_get(l);
 638
 639    if (it)
 640      {
 641         wd->selected_item = it;
 642         if (!wd->idler)
 643           wd->idler = ecore_idle_enterer_before_add(_move_scroller, obj);
 644      }
 645
 646    ev->event_flags |= EVAS_EVENT_FLAG_ON_HOLD;
 647    return EINA_TRUE;
 648 }
 649
 650 static void
 651 _selected_item_indicate(Elm_Diskselector_Item *it)
 652 {
 653    Elm_Diskselector_Item *item;
 654    Eina_List *l;
 655    Widget_Data *wd;
 656    wd = elm_widget_data_get(WIDGET(it));
 657
 658    if (!wd) return;
 659    if (!it->label) return;
 660
 661    EINA_LIST_FOREACH(wd->r_items, l, item)
 662      {
 663         if (item->label && !strcmp(item->label, it->label))
 664            edje_object_signal_emit(VIEW(item), "elm,state,selected", "elm");
 665         else
 666            edje_object_signal_emit(VIEW(item), "elm,state,default", "elm");
 667      }
 668 }
 669
 670 static void
 671 _item_click_cb(void *data, Evas_Object *obj __UNUSED__,
 672                const char *emission __UNUSED__, const char *source __UNUSED__)
 673 {
 674    Elm_Diskselector_Item *it = data;
 675
 676    if (!it) return;
 677
 678    Widget_Data *wd;
 679    wd = elm_widget_data_get(WIDGET(it));
 680
 681    if (!wd) return;
 682
 683    if (wd->selected_item != it)
 684      {
 685         wd->selected_item = it;
 686         _selected_item_indicate(wd->selected_item);
 687      }
 688
 689    if (it->func) it->func((void *)it->base.data, WIDGET(it), it);
 690 }
 691
 692 static void
 693 _scroller_move_cb(void *data, Evas_Object *obj __UNUSED__, void *event_info __UNUSED__)
 694 {
 695    Evas_Coord x, y, w, h, bw;
 696    Widget_Data *wd = data;
 697
 698    _check_string(wd);
 699    elm_smart_scroller_child_pos_get(obj, &x, &y);
 700    elm_smart_scroller_child_viewport_size_get(obj, &w, &h);
 701    if (wd->round)
 702      {
 703         evas_object_geometry_get(wd->main_box, NULL, NULL, &bw, NULL);
 704         if (x > ((w / wd->display_item_num) * (wd->item_count + (wd->display_item_num % 2))))
 705            elm_smart_scroller_child_region_show(wd->scroller,
 706                                                x - ((w / wd->display_item_num) * wd->item_count),
 707                                                y, w, h);
 708         else if (x < 0)
 709            elm_smart_scroller_child_region_show(wd->scroller,
 710                                                x + ((w / wd->display_item_num) * wd->item_count),
 711                                                y, w, h);
 712      }
 713 }
 714
 715 static void
 716 _scroller_stop_cb(void *data, Evas_Object *obj __UNUSED__, void *event_info __UNUSED__)
 717 {
 718    Elm_Diskselector_Item *it;
 719    Widget_Data *wd = elm_widget_data_get(data);
 720    Evas_Coord x, w, ow;
 721    Eina_List *l, *list;
 722
 723    if (wd->idler) return;
 724
 725    if (!wd->round)
 726      list = wd->items;
 727    else
 728      list = wd->r_items;
 729
 730    evas_object_geometry_get(wd->scroller, NULL, NULL, &ow, NULL);
 731    EINA_LIST_FOREACH(list, l, it)
 732      {
 733         evas_object_geometry_get(VIEW(it), &x, NULL, &w, NULL);
 734         if (abs((int)(ow / 2 - (int)(x + w / 2))) < 10) break;
 735      }
 736
 737    if (!it) return;
 738    _select_item(it);
 739    evas_object_smart_callback_call(data, SIG_SCROLL_ANIM_STOP, it);
 740 }
 741
 742 static void
 743 _scroller_start_cb(void *data, Evas_Object *obj __UNUSED__, void *event_info __UNUSED__)
 744 {
 745    evas_object_smart_callback_call(data, SIG_SCROLL_ANIM_START,
 746                                    elm_diskselector_selected_item_get(data));
 747 }
 748
 749 static void
 750 _drag_start_cb(void *data, Evas_Object *obj __UNUSED__, void *event_info __UNUSED__)
 751 {
 752    evas_object_smart_callback_call(data, SIG_SCROLL_DRAG_START,
 753                                    elm_diskselector_selected_item_get(data));
 754 }
 755
 756 static void
 757 _drag_stop_cb(void *data, Evas_Object *obj __UNUSED__, void *event_info __UNUSED__)
 758 {
 759    evas_object_smart_callback_call(data, SIG_SCROLL_DRAG_STOP,
 760                                    elm_diskselector_selected_item_get(data));
 761 }
 762
 763 static Eina_Bool
 764 _move_scroller(void *data)
 765 {
 766    Evas_Object *obj = data;
 767    Widget_Data *wd;
 768    Eina_List *list, *l;
 769    Elm_Diskselector_Item *dit;
 770    Evas_Coord y, w, h;
 771    int i;
 772
 773    wd = elm_widget_data_get(obj);
 774    if (!wd) return EINA_FALSE;
 775
 776    if (!wd->round)
 777      {
 778         i = 0;
 779         list = wd->items;
 780      }
 781    else
 782      {
 783         i = 1;
 784         list = wd->r_items;
 785      }
 786
 787    EINA_LIST_FOREACH(list, l, dit)
 788      {
 789         if (wd->selected_item == dit)
 790            break;
 791         i++;
 792      }
 793
 794    if (wd->round) i -= CEIL(wd->display_item_num);
 795
 796    if (!dit)
 797      {
 798         wd->selected_item =
 799            (Elm_Diskselector_Item *) eina_list_nth(wd->items, 0);
 800         return EINA_FALSE;
 801      }
 802
 803    evas_object_geometry_get(wd->scroller, NULL, &y, &w, &h);
 804    //move scroller in two steps for getting smooth launching effect.
 805    if (i > 2)
 806      elm_smart_scroller_child_region_show(wd->scroller, w / wd->display_item_num * (i-2), y, w, h);
 807    elm_smart_scroller_region_bring_in(wd->scroller, w / wd->display_item_num * i, y, w, h);
 808
 809    _select_item(dit);
 810    if (wd->idler)
 811      {
 812         ecore_idle_enterer_del(wd->idler);
 813         wd->idler = NULL;
 814      }
 815    wd->init = EINA_TRUE;
 816    _check_string(wd);
 817
 818    return EINA_TRUE;
 819 }
 820
 821 static void
 822 _round_item_del(Widget_Data *wd, Elm_Diskselector_Item *it)
 823 {
 824    if (!it) return;
 825    elm_box_unpack(wd->main_box, VIEW(it));
 826    wd->r_items = eina_list_remove(wd->r_items, it);
 827    eina_stringshare_del(it->label);
 828    elm_widget_item_free(it);
 829 }
 830
 831 static void
 832 _round_items_del(Widget_Data *wd)
 833 {
 834    Eina_List *l;
 835    Elm_Diskselector_Item * it;
 836
 837    _round_item_del(wd, wd->last);
 838    wd->last = NULL;
 839    _round_item_del(wd, wd->s_last);
 840    wd->s_last = NULL;
 841    _round_item_del(wd, wd->second);
 842    wd->second = NULL;
 843    _round_item_del(wd, wd->first);
 844    wd->first = NULL;
 845
 846    EINA_LIST_FOREACH(wd->under_items, l, it)
 847      {
 848         _round_item_del(wd, it);
 849      }
 850    wd->under_items = eina_list_free(wd->under_items);
 851
 852    EINA_LIST_FOREACH(wd->over_items, l, it)
 853      {
 854         _round_item_del(wd, it);
 855      }
 856    wd->over_items = eina_list_free(wd->over_items);
 857 }
 858
 859 static void
 860 _round_items_add(Widget_Data *wd)
 861 {
 862    Elm_Diskselector_Item *dit;
 863    Elm_Diskselector_Item *it;
 864    Elm_Diskselector_Item *temp_it;
 865    int i = 0;
 866    dit = it = eina_list_nth(wd->items, 0);
 867    if (!dit) return;
 868
 869    if (!wd->first)
 870      {
 871         wd->first = _item_new(WIDGET(it), it->icon, it->label, it->func,
 872                               it->base.data);
 873         wd->first->node = it->node;
 874         wd->r_items = eina_list_append(wd->r_items, wd->first);
 875      }
 876
 877    it = eina_list_nth(wd->items, 1);
 878    if (!it)
 879      it = dit;
 880    if (!wd->second)
 881      {
 882         wd->second = _item_new(WIDGET(it), it->icon, it->label, it->func,
 883                                it->base.data);
 884         wd->second->node = it->node;
 885         wd->r_items = eina_list_append(wd->r_items, wd->second);
 886      }
 887
 888    // if more than 3 itmes should be displayed
 889    for (i = 2; i < CEIL(wd->display_item_num); i++)
 890      {
 891         it = eina_list_nth(wd->items, i);
 892         if (!it) it = dit;
 893         temp_it = _item_new(WIDGET(it), it->icon, it->label, it->func, it->base.data);
 894         wd->over_items = eina_list_append(wd->over_items, temp_it);
 895         wd->r_items = eina_list_append(wd->r_items, temp_it);
 896      }
 897
 898    it = eina_list_nth(wd->items, wd->item_count - 1);
 899    if (!it)
 900      it = dit;
 901    if (!wd->last)
 902      {
 903         wd->last = _item_new(WIDGET(it), it->icon, it->label, it->func,
 904                              it->base.data);
 905         wd->last->node = it->node;
 906         wd->r_items = eina_list_prepend(wd->r_items, wd->last);
 907      }
 908
 909    it = eina_list_nth(wd->items, wd->item_count - 2);
 910    if (!it)
 911      it = dit;
 912    if (!wd->s_last)
 913      {
 914         wd->s_last = _item_new(WIDGET(it), it->icon, it->label, it->func,
 915                                it->base.data);
 916         wd->s_last->node = it->node;
 917         wd->r_items = eina_list_prepend(wd->r_items, wd->s_last);
 918      }
 919
 920    // if more than 3 itmes should be displayed
 921    for (i = 3; i <= CEIL(wd->display_item_num); i++)
 922      {
 923         it = eina_list_nth(wd->items, wd->item_count - i);
 924         if (!it) it = dit;
 925         temp_it = _item_new(WIDGET(it), it->icon, it->label, it->func, it->base.data);
 926         wd->under_items = eina_list_append(wd->under_items, temp_it);
 927         wd->r_items = eina_list_prepend(wd->r_items, temp_it);
 928      }
 929 }
 930
 931 static void
 932 _item_icon_set(Elm_Diskselector_Item *it, Evas_Object *icon)
 933 {
 934    if (it->icon == icon) return;
 935    if (it->icon) evas_object_del(it->icon);
 936    it->icon = icon;
 937    if (VIEW(it))
 938      {
 939         evas_object_size_hint_min_set(it->icon, 24, 24);
 940         evas_object_size_hint_max_set(it->icon, 40, 40);
 941         edje_object_part_swallow(VIEW(it), "elm.swallow.icon", it->icon);
 942         evas_object_show(it->icon);
 943         elm_widget_sub_object_add(WIDGET(it), it->icon);
 944      }
 945 }
 946
 947 static void
 948 _check_identical_item(Elm_Diskselector_Item *it, Evas_Object *icon)
 949 {
 950    Widget_Data *wd;
 951    Elm_Diskselector_Item *dit;
 952    Eina_List *l;
 953    int idx = 0;
 954    int ic = 0;
 955    int ac = 0;
 956
 957    wd = elm_widget_data_get(WIDGET(it));
 958    if (!wd) return;
 959
 960    if (wd->round)
 961      {
 962         // Get index from indentical item from round items
 963         EINA_LIST_FOREACH(wd->r_items, l, dit)
 964           {
 965              if (it == dit) break;
 966              idx++;
 967           }
 968
 969         // No item to match
 970         ic = eina_list_count(wd->r_items);
 971         if (idx >= ic) return;
 972         dit = NULL;
 973
 974         // Number of added items: CEIL(wd->display_item_num)
 975         ac = CEIL(wd->display_item_num);
 976
 977         if (((idx >= 0) && (idx < ac)) ||
 978             ((idx >= ac) && (idx < (2 * ac))))
 979           {
 980               // Selected item: under, low region
 981              dit = eina_list_nth(wd->r_items,
 982                                  idx + ic - (2 * ac));
 983           }
 984         else if (((idx >= (ic - ac)) && (idx < ic)) ||
 985                  ((idx >= (ic - (2 * ac))) && (idx < ic - ac)))
 986           {
 987               // Selected item: over, high region
 988               dit = eina_list_nth(wd->r_items,
 989                                   idx - ic + (2 * ac));
 990           }
 991
 992         if (dit) _item_icon_set(dit, icon);
 993         _sizing_eval(wd->self);
 994      }
 995 }
 996
 997 static void
 998 _item_text_set_hook(Elm_Object_Item *it, const char *part, const char *label)
 999 {
1000    Elm_Diskselector_Item *item;
1001    if (part && strcmp(part, "default")) return;
1002    item = (Elm_Diskselector_Item *)it;
1003    eina_stringshare_replace(&item->label, label);
1004    edje_object_part_text_escaped_set(VIEW(item), "elm.text", item->label);
1005 }
1006
1007 static const char *
1008 _item_text_get_hook(const Elm_Object_Item *it, const char *part)
1009 {
1010    if (part && strcmp(part, "default")) return NULL;
1011    return ((Elm_Diskselector_Item *)it)->label;
1012 }
1013
1014 static void
1015 _item_content_set_hook(Elm_Object_Item *it,
1016                        const char *part,
1017                        Evas_Object *content)
1018 {
1019    if (part && strcmp(part, "icon")) return;
1020    _item_icon_set((Elm_Diskselector_Item *)it, content);
1021    _check_identical_item((Elm_Diskselector_Item *)it, content);
1022 }
1023
1024 static Evas_Object *
1025 _item_content_get_hook(const Elm_Object_Item *it, const char *part)
1026 {
1027    if (part && strcmp(part, "icon")) return NULL;
1028    return ((Elm_Diskselector_Item *)it)->icon;
1029 }
1030
1031 EAPI Evas_Object *
1032 elm_diskselector_add(Evas_Object *parent)
1033 {
1034    Evas *e;
1035    Evas_Object *obj;
1036    Widget_Data *wd;
1037
1038    ELM_WIDGET_STANDARD_SETUP(wd, Widget_Data, parent, e, obj, NULL);
1039
1040    ELM_SET_WIDTYPE(widtype, "diskselector");
1041    elm_widget_type_set(obj, "diskselector");
1042    elm_widget_sub_object_add(parent, obj);
1043    elm_widget_data_set(obj, wd);
1044    elm_widget_del_hook_set(obj, _del_hook);
1045    elm_widget_del_pre_hook_set(obj, _del_pre_hook);
1046    elm_widget_theme_hook_set(obj, _theme_hook);
1047    elm_widget_can_focus_set(obj, EINA_TRUE);
1048    elm_widget_on_focus_hook_set(obj, _on_focus_hook, NULL);
1049    elm_widget_event_hook_set(obj, _event_hook);
1050
1051    wd->self = obj;
1052    wd->item_count = 0;
1053    wd->round = EINA_FALSE;
1054    wd->init = EINA_FALSE;
1055    wd->len_side = 3;
1056    wd->display_item_num_by_api = EINA_FALSE;
1057
1058    wd->scroller = elm_smart_scroller_add(e);
1059    elm_smart_scroller_widget_set(wd->scroller, obj);
1060    _theme_hook(obj);
1061    elm_widget_resize_object_set(obj, wd->scroller);
1062    elm_smart_scroller_policy_set(wd->scroller, ELM_SMART_SCROLLER_POLICY_OFF,
1063                                  ELM_SMART_SCROLLER_POLICY_OFF);
1064    elm_smart_scroller_bounce_allow_set(wd->scroller, EINA_TRUE, EINA_FALSE);
1065    evas_object_smart_callback_add(wd->scroller, "scroll", _scroller_move_cb,
1066                                   wd);
1067    evas_object_smart_callback_add(wd->scroller, "animate,stop",
1068                                   _scroller_stop_cb, obj);
1069    evas_object_smart_callback_add(wd->scroller, "animate,start",
1070                                   _scroller_start_cb, obj);
1071    evas_object_smart_callback_add(wd->scroller, "drag,stop",
1072                                   _drag_stop_cb, obj);
1073    evas_object_smart_callback_add(wd->scroller, "drag,start",
1074                                   _drag_start_cb, obj);
1075
1076    _elm_theme_object_set(obj, wd->scroller, "diskselector", "base",
1077                          "default");
1078    evas_object_event_callback_add(wd->scroller, EVAS_CALLBACK_RESIZE,
1079                                   _diskselector_object_resize, obj);
1080
1081    wd->main_box = elm_box_add(parent);
1082    elm_box_horizontal_set(wd->main_box, EINA_TRUE);
1083    elm_box_homogeneous_set(wd->main_box, EINA_TRUE);
1084    evas_object_size_hint_weight_set(wd->main_box, EVAS_HINT_EXPAND,
1085                                     EVAS_HINT_EXPAND);
1086    evas_object_size_hint_align_set(wd->main_box, EVAS_HINT_FILL,
1087                                    EVAS_HINT_FILL);
1088    _elm_theme_object_set(obj, wd->main_box, "diskselector", "base",
1089                          "default");
1090    elm_widget_sub_object_add(obj, wd->main_box);
1091
1092    elm_smart_scroller_child_set(wd->scroller, wd->main_box);
1093
1094    wd->left_blank = edje_object_add(evas_object_evas_get(obj));
1095    _elm_theme_object_set(obj, wd->left_blank, "diskselector", "item",
1096                          "default");
1097    evas_object_size_hint_weight_set(wd->left_blank, EVAS_HINT_EXPAND,
1098                                     EVAS_HINT_EXPAND);
1099    evas_object_size_hint_align_set(wd->left_blank, EVAS_HINT_FILL,
1100                                    EVAS_HINT_FILL);
1101    elm_box_pack_end(wd->main_box, wd->left_blank);
1102    evas_object_show(wd->left_blank);
1103
1104    wd->right_blank = edje_object_add(evas_object_evas_get(obj));
1105    _elm_theme_object_set(obj, wd->right_blank, "diskselector", "item",
1106                          "default");
1107    evas_object_size_hint_weight_set(wd->right_blank, EVAS_HINT_EXPAND,
1108                                     EVAS_HINT_EXPAND);
1109    evas_object_size_hint_align_set(wd->right_blank, EVAS_HINT_FILL,
1110                                    EVAS_HINT_FILL);
1111    elm_box_pack_end(wd->main_box, wd->right_blank);
1112    evas_object_show(wd->right_blank);
1113
1114    _theme_data_get(wd);
1115
1116    evas_object_smart_callback_add(obj, "sub-object-del", _sub_del, obj);
1117    evas_object_smart_callbacks_descriptions_set(obj, _signals);
1118    _sizing_eval(obj);
1119    return obj;
1120 }
1121
1122 EAPI Eina_Bool
1123 elm_diskselector_round_enabled_get(const Evas_Object *obj)
1124 {
1125    ELM_CHECK_WIDTYPE(obj, widtype) EINA_FALSE;
1126    Widget_Data *wd = elm_widget_data_get(obj);
1127    if (!wd) return EINA_FALSE;
1128    return wd->round;
1129 }
1130
1131 EAPI void
1132 elm_diskselector_round_enabled_set(Evas_Object * obj, Eina_Bool enabled)
1133 {
1134    Eina_List *elist;
1135    Elm_Diskselector_Item *it;
1136
1137    ELM_CHECK_WIDTYPE(obj, widtype);
1138    Widget_Data *wd = elm_widget_data_get(obj);
1139    if (!wd) return;
1140
1141    if (wd->round == enabled)
1142      return;
1143
1144    wd->round = !!enabled;
1145    if (enabled)
1146      {
1147         wd->r_items = eina_list_clone(wd->items);
1148         elm_box_unpack(wd->main_box, wd->left_blank);
1149         evas_object_hide(wd->left_blank);
1150         elm_box_unpack(wd->main_box, wd->right_blank);
1151         evas_object_hide(wd->right_blank);
1152         if (!wd->items)
1153           return;
1154
1155         _round_items_add(wd);
1156
1157         if (wd->last)
1158           elm_box_pack_start(wd->main_box, wd->VIEW(last));
1159         if (wd->s_last)
1160           elm_box_pack_start(wd->main_box, wd->VIEW(s_last));
1161
1162         // if more than 3 items should be displayed
1163         EINA_LIST_FOREACH(wd->under_items, elist, it)
1164            elm_box_pack_start(wd->main_box, VIEW(it));
1165
1166         if (wd->first)
1167           elm_box_pack_end(wd->main_box, wd->VIEW(first));
1168         if (wd->second)
1169           elm_box_pack_end(wd->main_box, wd->VIEW(second));
1170
1171         // if more than 3 items should be displayed
1172         EINA_LIST_FOREACH(wd->over_items, elist, it)
1173            elm_box_pack_end(wd->main_box, VIEW(it));
1174      }
1175    else
1176      {
1177         _round_items_del(wd);
1178         elm_box_pack_start(wd->main_box, wd->left_blank);
1179         elm_box_pack_end(wd->main_box, wd->right_blank);
1180         eina_list_free(wd->r_items);
1181         wd->r_items = NULL;
1182      }
1183
1184    _selected_item_indicate(wd->selected_item);
1185    _sizing_eval(obj);
1186 }
1187
1188 EAPI int
1189 elm_diskselector_side_text_max_length_get(const Evas_Object *obj)
1190 {
1191    ELM_CHECK_WIDTYPE(obj, widtype) 0;
1192    Widget_Data *wd = elm_widget_data_get(obj);
1193    if (!wd) return 0;
1194    return wd->len_side;
1195 }
1196
1197 EAPI void
1198 elm_diskselector_side_text_max_length_set(Evas_Object *obj, int len)
1199 {
1200    ELM_CHECK_WIDTYPE(obj, widtype);
1201    Widget_Data *wd = elm_widget_data_get(obj);
1202    if (!wd) return;
1203    wd->len_side = len;
1204 }
1205
1206 EAPI void
1207 elm_diskselector_bounce_set(Evas_Object *obj, Eina_Bool h_bounce, Eina_Bool v_bounce)
1208 {
1209    ELM_CHECK_WIDTYPE(obj, widtype);
1210    Widget_Data *wd = elm_widget_data_get(obj);
1211    if (!wd) return;
1212    if (wd->scroller)
1213      elm_smart_scroller_bounce_allow_set(wd->scroller, h_bounce, v_bounce);
1214 }
1215
1216 EAPI void
1217 elm_diskselector_bounce_get(const Evas_Object *obj, Eina_Bool *h_bounce, Eina_Bool *v_bounce)
1218 {
1219    ELM_CHECK_WIDTYPE(obj, widtype);
1220    Widget_Data *wd = elm_widget_data_get(obj);
1221    if (!wd) return;
1222    elm_smart_scroller_bounce_allow_get(wd->scroller, h_bounce, v_bounce);
1223 }
1224
1225 EAPI void
1226 elm_diskselector_scroller_policy_get(const Evas_Object *obj, Elm_Scroller_Policy *policy_h, Elm_Scroller_Policy *policy_v)
1227 {
1228    ELM_CHECK_WIDTYPE(obj, widtype);
1229    Elm_Smart_Scroller_Policy s_policy_h, s_policy_v;
1230    Widget_Data *wd = elm_widget_data_get(obj);
1231    if ((!wd) || (!wd->scroller)) return;
1232    elm_smart_scroller_policy_get(wd->scroller, &s_policy_h, &s_policy_v);
1233    *policy_h = (Elm_Scroller_Policy) s_policy_h;
1234    *policy_v = (Elm_Scroller_Policy) s_policy_v;
1235 }
1236
1237 EAPI void
1238 elm_diskselector_scroller_policy_set(Evas_Object *obj, Elm_Scroller_Policy policy_h, Elm_Scroller_Policy policy_v)
1239 {
1240    ELM_CHECK_WIDTYPE(obj, widtype);
1241    Widget_Data *wd = elm_widget_data_get(obj);
1242    if ((!wd) || (!wd->scroller)) return;
1243    if ((policy_h >= ELM_SCROLLER_POLICY_LAST) ||
1244        (policy_v >= ELM_SCROLLER_POLICY_LAST))
1245      return;
1246    elm_smart_scroller_policy_set(wd->scroller, policy_h, policy_v);
1247 }
1248
1249 EAPI void
1250 elm_diskselector_clear(Evas_Object *obj)
1251 {
1252    ELM_CHECK_WIDTYPE(obj, widtype);
1253    Widget_Data *wd = elm_widget_data_get(obj);
1254    Elm_Diskselector_Item *it;
1255
1256    if (!wd) return;
1257    if (!wd->items) return;
1258
1259    wd->selected_item = NULL;
1260    EINA_LIST_FREE(wd->items, it)
1261      {
1262         _item_del(it);
1263         elm_widget_item_free(it);
1264      }
1265    _round_items_del(wd);
1266    _sizing_eval(obj);
1267 }
1268
1269 EAPI const Eina_List *
1270 elm_diskselector_items_get(const Evas_Object *obj)
1271 {
1272    ELM_CHECK_WIDTYPE(obj, widtype) NULL;
1273    Widget_Data *wd = elm_widget_data_get(obj);
1274    if (!wd) return NULL;
1275    return wd->items;
1276 }
1277
1278 EAPI Elm_Object_Item *
1279 elm_diskselector_item_append(Evas_Object *obj, const char *label, Evas_Object *icon, Evas_Smart_Cb func, const void *data)
1280 {
1281    Elm_Diskselector_Item *it;
1282    ELM_CHECK_WIDTYPE(obj, widtype) NULL;
1283    Widget_Data *wd = elm_widget_data_get(obj);
1284    if (!wd) return NULL;
1285
1286    it = _item_new(obj, icon, label, func, data);
1287    wd->items = eina_list_append(wd->items, it);
1288    it->node = eina_list_last(wd->items);
1289    wd->item_count++;
1290    if (wd->round)
1291      {
1292         _round_items_del(wd);
1293         wd->r_items = eina_list_append(wd->r_items, it);
1294         _round_items_add(wd);
1295         if (wd->last)
1296           elm_box_pack_start(wd->main_box, wd->VIEW(last));
1297         if (wd->s_last)
1298           elm_box_pack_start(wd->main_box, wd->VIEW(s_last));
1299         elm_box_pack_end(wd->main_box, VIEW(it));
1300         if (wd->first)
1301           elm_box_pack_end(wd->main_box, wd->VIEW(first));
1302         if (wd->second)
1303           elm_box_pack_end(wd->main_box, wd->VIEW(second));
1304      }
1305    else
1306      {
1307         elm_box_unpack(wd->main_box, wd->right_blank);
1308         elm_box_pack_end(wd->main_box, VIEW(it));
1309         elm_box_pack_end(wd->main_box, wd->right_blank);
1310      }
1311    if (!wd->selected_item)
1312      wd->selected_item = it;
1313    if (!wd->idler)
1314      wd->idler = ecore_idle_enterer_before_add(_move_scroller, obj);
1315    _sizing_eval(obj);
1316    return (Elm_Object_Item *)it;
1317 }
1318
1319 EAPI Elm_Object_Item *
1320 elm_diskselector_selected_item_get(const Evas_Object *obj)
1321 {
1322    ELM_CHECK_WIDTYPE(obj, widtype) NULL;
1323    Widget_Data *wd = elm_widget_data_get(obj);
1324    if (!wd) return NULL;
1325    return (Elm_Object_Item *) wd->selected_item;
1326 }
1327
1328 EAPI void
1329 elm_diskselector_item_selected_set(Elm_Object_Item *it, Eina_Bool selected)
1330 {
1331    ELM_OBJ_ITEM_CHECK_OR_RETURN(it);
1332    Widget_Data *wd;
1333    Elm_Diskselector_Item *item = (Elm_Diskselector_Item *)it;
1334    wd = elm_widget_data_get(WIDGET(item));
1335    if (!wd) return;
1336
1337    if ((wd->selected_item == item) && (selected))
1338      return;
1339
1340    if ((wd->selected_item == item) && (!selected))
1341      wd->selected_item = eina_list_data_get(wd->items);
1342    else
1343      {
1344         wd->selected_item = item;
1345         _selected_item_indicate(wd->selected_item);
1346      }
1347
1348    if (!wd->idler)
1349      wd->idler = ecore_idle_enterer_before_add(_move_scroller, WIDGET(item));
1350 }
1351
1352 EAPI Eina_Bool
1353 elm_diskselector_item_selected_get(const Elm_Object_Item *it)
1354 {
1355    ELM_OBJ_ITEM_CHECK_OR_RETURN(it, EINA_FALSE);
1356    Widget_Data *wd = elm_widget_data_get(WIDGET(it));
1357    if (!wd) return EINA_FALSE;
1358    return (wd->selected_item == ((Elm_Diskselector_Item *)it));
1359 }
1360
1361 EAPI Elm_Object_Item *
1362 elm_diskselector_item_prev_get(const Elm_Object_Item *it)
1363 {
1364    ELM_OBJ_ITEM_CHECK_OR_RETURN(it, NULL);
1365    Elm_Diskselector_Item *item = (Elm_Diskselector_Item *)it;
1366    if (item->node->prev) return item->node->prev->data;
1367    else return NULL;
1368 }
1369
1370 EAPI Elm_Object_Item *
1371 elm_diskselector_item_next_get(const Elm_Object_Item *it)
1372 {
1373    ELM_OBJ_ITEM_CHECK_OR_RETURN(it, NULL);
1374    Elm_Diskselector_Item *item = (Elm_Diskselector_Item *)it;
1375    if (item->node->next) return item->node->next->data;
1376    else return NULL;
1377 }
1378
1379 EAPI Elm_Object_Item *
1380 elm_diskselector_first_item_get(const Evas_Object *obj)
1381 {
1382    ELM_CHECK_WIDTYPE(obj, widtype) NULL;
1383    Widget_Data *wd = elm_widget_data_get(obj);
1384    if (!wd || !wd->items) return NULL;
1385    return eina_list_data_get(wd->items);
1386 }
1387
1388 EAPI Elm_Object_Item *
1389 elm_diskselector_last_item_get(const Evas_Object *obj)
1390 {
1391    ELM_CHECK_WIDTYPE(obj, widtype) NULL;
1392    Widget_Data *wd = elm_widget_data_get(obj);
1393    if (!wd || !wd->items) return NULL;
1394    return eina_list_data_get(eina_list_last(wd->items));
1395 }
1396
1397 EAPI void
1398 elm_diskselector_display_item_num_set(Evas_Object *obj, int num)
1399 {
1400    ELM_CHECK_WIDTYPE(obj, widtype);
1401    Widget_Data *wd = elm_widget_data_get(obj);
1402    if (!wd) return;
1403    if (num < DISPLAY_ITEM_NUM_MIN) num = DISPLAY_ITEM_NUM_MIN;
1404    wd->display_item_num = num;
1405    wd->display_item_num_by_api = EINA_TRUE;
1406 }
1407
1408 EAPI int
1409 elm_diskselector_display_item_num_get(const Evas_Object *item)
1410 {
1411    ELM_CHECK_WIDTYPE(item, widtype) (-1);
1412    Widget_Data *wd = elm_widget_data_get(item);
1413    if (!wd) return -1;
1414    return wd->display_item_num;
1415 }