src/lib/elm_segment_control.c

   1 #include <Elementary.h>
   2 #include "elm_priv.h"
   3
   4 typedef struct _Widget_Data Widget_Data;
   5 typedef struct _Elm_Segment_Item Elm_Segment_Item;
   6
   7 struct _Widget_Data
   8 {
   9    Evas_Object *obj;
  10    Evas_Object *base;
  11    Eina_List *seg_items;
  12    int item_count;
  13    Elm_Segment_Item *selected_item;
  14    int item_width;
  15 };
  16
  17 struct _Elm_Segment_Item
  18 {
  19    ELM_WIDGET_ITEM;
  20    Evas_Object *icon;
  21    const char *label;
  22    int seg_index;
  23 };
  24
  25 static const char *widtype = NULL;
  26 static void _sizing_eval(Evas_Object *obj);
  27 static void _del_hook(Evas_Object *obj);
  28 static void _theme_hook(Evas_Object *obj);
  29 static void _disable_hook(Evas_Object *obj);
  30 static void _item_free(Elm_Segment_Item *it);
  31 static void _segment_off(Elm_Segment_Item *it);
  32 static void _segment_on(Elm_Segment_Item *it);
  33 static void _position_items(Widget_Data *wd);
  34 static void _on_move_resize(void *data, Evas *e __UNUSED__, Evas_Object *obj
  35                             __UNUSED__, void *event_info __UNUSED__);
  36 static void _mouse_up(void *data, Evas *e __UNUSED__, Evas_Object *obj
  37                       __UNUSED__, void *event_info __UNUSED__);
  38 static void _mouse_down(void *data, Evas *e __UNUSED__, Evas_Object *obj
  39                         __UNUSED__, void *event_info __UNUSED__);
  40 static void _swallow_item_objects(Elm_Segment_Item *it);
  41 static void _update_list(Widget_Data *wd);
  42 static Elm_Segment_Item * _item_find(const Evas_Object *obj, int index);
  43 static Elm_Segment_Item* _item_new(Evas_Object *obj, Evas_Object *icon,
  44                                    const char *label);
  45
  46 static const char SIG_CHANGED[] = "changed";
  47
  48 static const Evas_Smart_Cb_Description _signals[] = {
  49    {SIG_CHANGED, ""},
  50    {NULL, NULL}
  51 };
  52
  53 static void
  54 _sizing_eval(Evas_Object *obj)
  55 {
  56    Widget_Data *wd;
  57    Evas_Coord minw = -1, minh = -1;
  58    Evas_Coord w, h;
  59
  60    wd = elm_widget_data_get(obj);
  61    if (!wd) return;
  62
  63    elm_coords_finger_size_adjust(wd->item_count, &minw, 1, &minh);
  64    edje_object_size_min_restricted_calc(wd->base, &minw, &minh, minw, minh);
  65    elm_coords_finger_size_adjust(wd->item_count, &minw, 1, &minh);
  66
  67    evas_object_size_hint_min_get(obj, &w, &h);
  68    if (w > minw) minw = w;
  69    if (h > minh) minh = h;
  70    evas_object_size_hint_min_set(obj, minw, minh);
  71 }
  72
  73 static void
  74 _del_hook(Evas_Object *obj)
  75 {
  76    Elm_Segment_Item *it;
  77    Widget_Data *wd;
  78
  79    wd = elm_widget_data_get(obj);
  80    if (!wd) return;
  81
  82    EINA_LIST_FREE(wd->seg_items, it)
  83      {
  84         _item_free(it);
  85         elm_widget_item_free(it);
  86      }
  87
  88    free(wd);
  89 }
  90
  91 static void
  92 _theme_hook(Evas_Object *obj)
  93 {
  94    Eina_List *l;
  95    Eina_Bool rtl;
  96    Elm_Segment_Item *it;
  97    Widget_Data *wd;
  98
  99    wd = elm_widget_data_get(obj);
 100    if (!wd) return;
 101
 102    _elm_widget_mirrored_reload(obj);
 103    rtl = elm_widget_mirrored_get(obj);
 104    edje_object_mirrored_set(wd->base, rtl);
 105
 106    _elm_theme_object_set(obj, wd->base, "segment_control", "base",
 107                          elm_widget_style_get(obj));
 108    edje_object_scale_set(wd->base, elm_widget_scale_get(wd->base)
 109                          *_elm_config->scale);
 110
 111    EINA_LIST_FOREACH(wd->seg_items, l, it)
 112      {
 113         _elm_theme_object_set(obj, VIEW(it), "segment_control",
 114                               "item", elm_widget_style_get(obj));
 115         edje_object_scale_set(VIEW(it), elm_widget_scale_get(VIEW(it))
 116                               *_elm_config->scale);
 117         edje_object_mirrored_set(VIEW(it), rtl);
 118      }
 119
 120    _update_list(wd);
 121 }
 122
 123 static void
 124 _disable_hook(Evas_Object *obj)
 125 {
 126    Widget_Data *wd;
 127
 128    wd = elm_widget_data_get(obj);
 129    if (!wd) return;
 130    _update_list(wd);
 131 }
 132
 133 // TODO:  Elm_widget elm_widget_focus_list_next_get  supports only Elm_widget list,
 134 // Not the Elm_Widget_item. Focus switching with in widget not supported until
 135 // it is supported in elm_widget
 136 #if 0
 137 static void *
 138 _elm_list_data_get(const Eina_List *list)
 139 {
 140    Elm_Segment_Item *it = eina_list_data_get(list);
 141
 142    if (it) return NULL;
 143
 144    edje_object_signal_emit(VIEW(it), "elm,state,segment,selected", "elm");
 145    return VIEW(it);
 146 }
 147
 148 static Eina_Bool
 149 _focus_next_hook(const Evas_Object *obj, Elm_Focus_Direction dir,
 150                  Evas_Object **next)
 151 {
 152    static int count=0;
 153    Widget_Data *;
 154    const Eina_List *items;
 155    void *(*list_data_get) (const Eina_List *list);
 156
 157    wd = elm_widget_data_get(obj);
 158    if ((!wd)) return EINA_FALSE;
 159
 160    /* Focus chain */
 161    /* TODO: Change this to use other chain */
 162    if ((items = elm_widget_focus_custom_chain_get(obj)))
 163      list_data_get = eina_list_data_get;
 164    else
 165      {
 166         items = wd->seg_items;
 167         list_data_get = _elm_list_data_get;
 168         if (!items) return EINA_FALSE;
 169      }
 170    return elm_widget_focus_list_next_get(obj, items, list_data_get, dir, next);
 171 }
 172 #endif
 173
 174 static void
 175 _item_free(Elm_Segment_Item *it)
 176 {
 177    Widget_Data *wd;
 178
 179    if (!it) return;
 180
 181    wd = elm_widget_item_data_get(it);
 182    if (!wd) return;
 183
 184    if (wd->selected_item == it) wd->selected_item = NULL;
 185    if (wd->seg_items) wd->seg_items = eina_list_remove(wd->seg_items, it);
 186
 187    if (it->icon) evas_object_del(it->icon);
 188    if (it->label) eina_stringshare_del(it->label);
 189 }
 190
 191 static void
 192 _segment_off(Elm_Segment_Item *it)
 193 {
 194    Widget_Data *wd;
 195
 196    if (!it) return;
 197
 198    wd = elm_widget_item_data_get(it);
 199    if (!wd) return;
 200
 201    edje_object_signal_emit(VIEW(it), "elm,state,segment,normal", "elm");
 202
 203    if (wd->selected_item == it) wd->selected_item = NULL;
 204 }
 205
 206 static void
 207 _segment_on(Elm_Segment_Item *it)
 208 {
 209    Widget_Data *wd;
 210
 211    if (!it) return;
 212
 213    wd = elm_widget_item_data_get(it);
 214    if (!wd) return;
 215    if (it == wd->selected_item) return;
 216
 217    if (wd->selected_item) _segment_off(wd->selected_item);
 218
 219    edje_object_signal_emit(VIEW(it), "elm,state,segment,selected", "elm");
 220
 221    wd->selected_item = it;
 222    evas_object_smart_callback_call(wd->obj, SIG_CHANGED, it);
 223 }
 224
 225 static void
 226 _position_items(Widget_Data *wd)
 227 {
 228    Eina_List *l;
 229    Elm_Segment_Item *it;
 230    Eina_Bool rtl;
 231    int bx, by, bw, bh, pos;
 232
 233    wd->item_count = eina_list_count(wd->seg_items);
 234    if (wd->item_count <= 0) return;
 235
 236    evas_object_geometry_get(wd->base, &bx, &by, &bw, &bh);
 237    wd->item_width = bw / wd->item_count;
 238    rtl = elm_widget_mirrored_get(wd->obj);
 239
 240    if (rtl)
 241      pos = bx + bw - wd->item_width;
 242    else
 243      pos = bx;
 244
 245    EINA_LIST_FOREACH(wd->seg_items, l, it)
 246      {
 247         evas_object_move(VIEW(it), pos, by);
 248         evas_object_resize(VIEW(it), wd->item_width, bh);
 249         if (rtl)
 250           pos -= wd->item_width;
 251         else
 252           pos += wd->item_width;
 253      }
 254    _sizing_eval(wd->obj);
 255 }
 256
 257 static void
 258 _on_move_resize(void *data, Evas *e __UNUSED__, Evas_Object *obj __UNUSED__,
 259                 void *event_info __UNUSED__)
 260 {
 261    Widget_Data *wd;
 262
 263    wd = elm_widget_data_get(data);
 264    if (!wd) return;
 265
 266    _position_items(wd);
 267
 268 }
 269
 270 static void
 271 _mouse_up(void *data, Evas *e __UNUSED__, Evas_Object *obj __UNUSED__,
 272           void *event_info)
 273 {
 274    Widget_Data *wd;
 275    Elm_Segment_Item *it;
 276    Evas_Event_Mouse_Up *ev;
 277    Evas_Coord x, y, w, h;
 278
 279    it = data;
 280    if (!it) return;
 281
 282    wd = elm_widget_item_data_get(it);
 283    if (!wd) return;
 284
 285    if (elm_widget_disabled_get(wd->obj)) return;
 286
 287    if (it == wd->selected_item) return;
 288
 289    ev = event_info;
 290    evas_object_geometry_get(VIEW(it), &x, &y, &w, &h);
 291
 292    if ((ev->canvas.x >= x) && (ev->output.x <= (x + w)) && (ev->canvas.y >= y)
 293        && (ev->canvas.y <= (y + h)))
 294      _segment_on(it);
 295    else
 296      edje_object_signal_emit(VIEW(it), "elm,state,segment,normal", "elm");
 297 }
 298
 299 static void
 300 _mouse_down(void *data, Evas *e __UNUSED__, Evas_Object *obj __UNUSED__,
 301             void *event_info __UNUSED__)
 302 {
 303    Widget_Data *wd;
 304    Elm_Segment_Item *it;
 305
 306    it = data;
 307    if (!it) return;
 308
 309    wd = elm_widget_item_data_get(it);
 310    if (!wd) return;
 311
 312    if (elm_widget_disabled_get(wd->obj)) return;
 313
 314    if (it == wd->selected_item) return;
 315
 316    edje_object_signal_emit(VIEW(it), "elm,state,segment,pressed", "elm");
 317 }
 318
 319 static void
 320 _swallow_item_objects(Elm_Segment_Item *it)
 321 {
 322    if (!it) return;
 323
 324    if (it->icon)
 325      {
 326         edje_object_part_swallow(VIEW(it), "elm.swallow.icon", it->icon);
 327         edje_object_signal_emit(VIEW(it), "elm,state,icon,visible", "elm");
 328      }
 329    else
 330      edje_object_signal_emit(VIEW(it), "elm,state,icon,hidden", "elm");
 331
 332    if (it->label)
 333      {
 334         edje_object_part_text_set(VIEW(it), "elm.text", it->label);
 335         edje_object_signal_emit(VIEW(it), "elm,state,text,visible", "elm");
 336      }
 337    else
 338      edje_object_signal_emit(VIEW(it), "elm,state,text,hidden", "elm");
 339    edje_object_message_signal_process(VIEW(it));
 340 }
 341
 342 static void
 343 _update_list(Widget_Data *wd)
 344 {
 345    Eina_List *l;
 346    Elm_Segment_Item *it;
 347    Eina_Bool rtl;
 348    int idx = 0;
 349
 350    _position_items(wd);
 351
 352    if (wd->item_count == 1)
 353      {
 354         it = eina_list_nth(wd->seg_items, 0);
 355         it->seg_index = 0;
 356
 357         //Set the segment type
 358         edje_object_signal_emit(VIEW(it),
 359                                 "elm,type,segment,single", "elm");
 360
 361         //Set the segment state
 362         if (wd->selected_item == it)
 363           edje_object_signal_emit(VIEW(it),
 364                                   "elm,state,segment,selected", "elm");
 365         else
 366           edje_object_signal_emit(VIEW(it),
 367                                   "elm,state,segment,normal", "elm");
 368
 369         if (elm_widget_disabled_get(wd->obj))
 370           edje_object_signal_emit(VIEW(it), "elm,state,disabled", "elm");
 371         else
 372           edje_object_signal_emit(VIEW(it), "elm,state,enabled", "elm");
 373
 374         _swallow_item_objects(it);
 375         return;
 376      }
 377
 378    rtl = elm_widget_mirrored_get(wd->obj);
 379    EINA_LIST_FOREACH(wd->seg_items, l, it)
 380      {
 381         it->seg_index = idx;
 382
 383         //Set the segment type
 384         if (idx == 0)
 385           {
 386              if (rtl)
 387                edje_object_signal_emit(VIEW(it),
 388                                        "elm,type,segment,right", "elm");
 389              else
 390                edje_object_signal_emit(VIEW(it),
 391                                        "elm,type,segment,left", "elm");
 392           }
 393         else if (idx == (wd->item_count - 1))
 394           {
 395              if (rtl)
 396                edje_object_signal_emit(VIEW(it),
 397                                        "elm,type,segment,left", "elm");
 398              else
 399                edje_object_signal_emit(VIEW(it),
 400                                        "elm,type,segment,right", "elm");
 401           }
 402         else
 403           edje_object_signal_emit(VIEW(it),
 404                                   "elm,type,segment,middle", "elm");
 405
 406         //Set the segment state
 407         if (wd->selected_item == it)
 408           edje_object_signal_emit(VIEW(it),
 409                                   "elm,state,segment,selected", "elm");
 410         else
 411           edje_object_signal_emit(VIEW(it),
 412                                   "elm,state,segment,normal", "elm");
 413
 414         if (elm_widget_disabled_get(wd->obj))
 415           edje_object_signal_emit(VIEW(it), "elm,state,disabled", "elm");
 416         else
 417           edje_object_signal_emit(VIEW(it), "elm,state,enabled", "elm");
 418
 419         _swallow_item_objects(it);
 420         idx++;
 421      }
 422 }
 423
 424 static Elm_Segment_Item *
 425 _item_find(const Evas_Object *obj, int idx)
 426 {
 427    Widget_Data *wd;
 428    Elm_Segment_Item *it;
 429
 430    wd = elm_widget_data_get(obj);
 431    if (!wd) return NULL;
 432
 433    it = eina_list_nth(wd->seg_items, idx);
 434    return it;
 435 }
 436
 437 static void
 438 _item_text_set_hook(Elm_Object_Item *it, const char *part, const char *label)
 439 {
 440    Widget_Data *wd;
 441    Elm_Segment_Item *item;
 442
 443    if (part && strcmp(part, "default")) return;
 444
 445    item = (Elm_Segment_Item *)it;
 446    wd = elm_widget_item_data_get(item);
 447    if (!wd) return;
 448
 449    eina_stringshare_replace(&item->label, label);
 450    if (item->label)
 451      edje_object_signal_emit(VIEW(item), "elm,state,text,visible", "elm");
 452    else
 453      edje_object_signal_emit(VIEW(item), "elm,state,text,hidden", "elm");
 454    edje_object_message_signal_process(VIEW(item));
 455    //label can be NULL also.
 456    edje_object_part_text_set(VIEW(item), "elm.text", item->label);
 457 }
 458
 459 static const char *
 460 _item_text_get_hook(const Elm_Object_Item *it, const char *part)
 461 {
 462    if (part && strcmp(part, "default")) return NULL;
 463    return ((Elm_Segment_Item *)it)->label;
 464 }
 465
 466 static void
 467 _item_content_set_hook(Elm_Object_Item *it,
 468                        const char *part,
 469                        Evas_Object *content)
 470 {
 471    Elm_Segment_Item *item;
 472    if (part && strcmp(part, "icon")) return;
 473
 474    item = (Elm_Segment_Item *)it;
 475    if (content == item->icon) return;
 476
 477    //Remove the existing icon
 478    if (item->icon) evas_object_del(item->icon);
 479    item->icon = content;
 480    if (item->icon)
 481      {
 482         elm_widget_sub_object_add(VIEW(item), item->icon);
 483         edje_object_part_swallow(VIEW(item), "elm.swallow.icon", item->icon);
 484         edje_object_signal_emit(VIEW(item), "elm,state,icon,visible", "elm");
 485      }
 486    else
 487      edje_object_signal_emit(VIEW(item), "elm,state,icon,hidden", "elm");
 488 }
 489
 490 static Evas_Object *
 491 _item_content_get_hook(const Elm_Object_Item *it, const char *part)
 492 {
 493    if (part && strcmp(part, "icon")) return NULL;
 494    return ((Elm_Segment_Item *)it)->icon;
 495 }
 496
 497 static Eina_Bool
 498 _item_del_pre_hook(Elm_Object_Item *it)
 499 {
 500    Widget_Data *wd;
 501    Elm_Segment_Item *item = (Elm_Segment_Item *)it;
 502
 503    wd = elm_widget_item_data_get(item);
 504    if (!wd) return EINA_FALSE;
 505
 506    _item_free(item);
 507    _update_list(wd);
 508
 509    return EINA_TRUE;
 510 }
 511
 512 static Elm_Segment_Item*
 513 _item_new(Evas_Object *obj, Evas_Object *icon, const char *label)
 514 {
 515    Elm_Segment_Item *it;
 516    Widget_Data *wd;
 517
 518    wd = elm_widget_data_get(obj);
 519    if (!wd) return NULL;
 520
 521    it = elm_widget_item_new(obj, Elm_Segment_Item);
 522    if (!it) return NULL;
 523    elm_widget_item_data_set(it, wd);
 524    elm_widget_item_del_pre_hook_set(it, _item_del_pre_hook);
 525    elm_widget_item_text_set_hook_set(it, _item_text_set_hook);
 526    elm_widget_item_text_get_hook_set(it, _item_text_get_hook);
 527    elm_widget_item_content_set_hook_set(it, _item_content_set_hook);
 528    elm_widget_item_content_get_hook_set(it, _item_content_get_hook);
 529
 530    VIEW(it) = edje_object_add(evas_object_evas_get(obj));
 531    edje_object_scale_set(VIEW(it), elm_widget_scale_get(VIEW(it))
 532                          *_elm_config->scale);
 533    evas_object_smart_member_add(VIEW(it), obj);
 534    elm_widget_sub_object_add(obj, VIEW(it));
 535    _elm_theme_object_set(obj, VIEW(it), "segment_control", "item",
 536                          elm_object_style_get(obj));
 537    edje_object_mirrored_set(VIEW(it),
 538                             elm_widget_mirrored_get(WIDGET(it)));
 539
 540    if (label)
 541      eina_stringshare_replace(&it->label, label);
 542    if (it->label)
 543      edje_object_signal_emit(VIEW(it), "elm,state,text,visible", "elm");
 544    else
 545      edje_object_signal_emit(VIEW(it), "elm,state,text,hidden", "elm");
 546    edje_object_message_signal_process(VIEW(it));
 547    edje_object_part_text_set(VIEW(it), "elm.text", label);
 548
 549    it->icon = icon;
 550    if (it->icon) elm_widget_sub_object_add(VIEW(it), it->icon);
 551    evas_object_event_callback_add(VIEW(it), EVAS_CALLBACK_MOUSE_DOWN,
 552                                   _mouse_down, it);
 553    evas_object_event_callback_add(VIEW(it), EVAS_CALLBACK_MOUSE_UP,
 554                                   _mouse_up, it);
 555    evas_object_show(VIEW(it));
 556
 557    return it;
 558 }
 559
 560 EAPI Evas_Object *
 561 elm_segment_control_add(Evas_Object *parent)
 562 {
 563    Evas_Object *obj;
 564    Evas *e;
 565    Widget_Data *wd;
 566
 567    ELM_WIDGET_STANDARD_SETUP(wd, Widget_Data, parent, e, obj, NULL);
 568
 569    ELM_SET_WIDTYPE(widtype, "segment_control");
 570    elm_widget_type_set(obj, "segment_control");
 571    elm_widget_sub_object_add(parent, obj);
 572    elm_widget_data_set(obj, wd);
 573    elm_widget_del_hook_set(obj, _del_hook);
 574    elm_widget_theme_hook_set(obj, _theme_hook);
 575    elm_widget_disable_hook_set(obj, _disable_hook);
 576
 577    // TODO: Focus switch support to Elm_widget_Item not supported yet.
 578 #if 0
 579    elm_widget_focus_next_hook_set(obj, _focus_next_hook);
 580 #endif
 581
 582    wd->obj = obj;
 583
 584    wd->base = edje_object_add(e);
 585    edje_object_scale_set(wd->base, elm_widget_scale_get(wd->base)
 586                          *_elm_config->scale);
 587    _elm_theme_object_set(obj, wd->base, "segment_control", "base", "default");
 588    elm_widget_resize_object_set(obj, wd->base);
 589
 590    evas_object_event_callback_add(obj, EVAS_CALLBACK_RESIZE,
 591                                   _on_move_resize, obj);
 592    evas_object_event_callback_add(obj, EVAS_CALLBACK_MOVE,
 593                                   _on_move_resize, obj);
 594
 595    evas_object_smart_callbacks_descriptions_set(obj, _signals);
 596
 597    return obj;
 598 }
 599
 600 EAPI Elm_Object_Item *
 601 elm_segment_control_item_add(Evas_Object *obj, Evas_Object *icon,
 602                              const char *label)
 603 {
 604    ELM_CHECK_WIDTYPE(obj, widtype) NULL;
 605    Elm_Segment_Item *it;
 606    Widget_Data *wd;
 607
 608    wd = elm_widget_data_get(obj);
 609    if (!wd) return NULL;
 610
 611    it = _item_new(obj, icon, label);
 612    if (!it) return NULL;
 613
 614    wd->seg_items = eina_list_append(wd->seg_items, it);
 615    _update_list(wd);
 616
 617    return (Elm_Object_Item *)it;
 618 }
 619
 620 EAPI Elm_Object_Item *
 621 elm_segment_control_item_insert_at(Evas_Object *obj, Evas_Object *icon,
 622                                    const char *label, int idx)
 623 {
 624    ELM_CHECK_WIDTYPE(obj, widtype) NULL;
 625    Elm_Segment_Item *it, *it_rel;
 626    Widget_Data *wd;
 627
 628    wd = elm_widget_data_get(obj);
 629    if (!wd) return NULL;
 630    if (idx < 0) idx = 0;
 631
 632    it = _item_new(obj, icon, label);
 633    if (!it) return NULL;
 634
 635    it_rel = _item_find(obj, idx);
 636    if (it_rel)
 637      wd->seg_items = eina_list_prepend_relative(wd->seg_items, it, it_rel);
 638    else
 639      wd->seg_items = eina_list_append(wd->seg_items, it);
 640
 641    _update_list(wd);
 642    return (Elm_Object_Item *)it;
 643 }
 644
 645 EAPI void
 646 elm_segment_control_item_del_at(Evas_Object *obj, int idx)
 647 {
 648    ELM_CHECK_WIDTYPE(obj, widtype);
 649    Elm_Segment_Item *it;
 650    Widget_Data *wd;
 651
 652    wd = elm_widget_data_get(obj);
 653    if (!wd) return;
 654
 655    it = _item_find(obj, idx);
 656    if (!it) return;
 657    elm_object_item_del((Elm_Object_Item *)it);
 658 }
 659
 660 EAPI const char*
 661 elm_segment_control_item_label_get(const Evas_Object *obj, int idx)
 662 {
 663    ELM_CHECK_WIDTYPE(obj, widtype) NULL;
 664    Elm_Segment_Item *it = _item_find(obj, idx);
 665    if (it) return it->label;
 666    return NULL;
 667 }
 668
 669 EAPI Evas_Object *
 670 elm_segment_control_item_icon_get(const Evas_Object *obj, int idx)
 671 {
 672    ELM_CHECK_WIDTYPE(obj, widtype) NULL;
 673    Elm_Segment_Item *it = _item_find(obj, idx);
 674    if (it) return it->icon;
 675    return NULL;
 676 }
 677
 678 EAPI int
 679 elm_segment_control_item_count_get(const Evas_Object *obj)
 680 {
 681    ELM_CHECK_WIDTYPE(obj, widtype) 0;
 682    Widget_Data *wd;
 683
 684    wd = elm_widget_data_get(obj);
 685    if (!wd) return 0;
 686
 687    return eina_list_count(wd->seg_items);
 688 }
 689
 690 EAPI Evas_Object*
 691 elm_segment_control_item_object_get(const Elm_Object_Item *it)
 692 {
 693    ELM_OBJ_ITEM_CHECK_OR_RETURN(it, NULL);
 694    return VIEW(it);
 695 }
 696
 697 EAPI Elm_Object_Item*
 698 elm_segment_control_item_selected_get(const Evas_Object *obj)
 699 {
 700    ELM_CHECK_WIDTYPE(obj, widtype) NULL;
 701    Widget_Data *wd = elm_widget_data_get(obj);
 702    if (!wd) return NULL;
 703    return (Elm_Object_Item *) wd->selected_item;
 704 }
 705
 706 EAPI void
 707 elm_segment_control_item_selected_set(Elm_Object_Item *it, Eina_Bool selected)
 708 {
 709    ELM_OBJ_ITEM_CHECK_OR_RETURN(it);
 710    Widget_Data *wd;
 711    Elm_Segment_Item *item = (Elm_Segment_Item *)it;
 712
 713    wd = elm_widget_item_data_get(item);
 714    if (!wd) return;
 715
 716    if (item == wd->selected_item)
 717      {
 718         //already in selected state.
 719         if (selected) return;
 720
 721         //unselect case
 722         _segment_off(item);
 723      }
 724    else if (selected)
 725      _segment_on(item);
 726
 727    return;
 728 }
 729
 730 EAPI Elm_Object_Item *
 731 elm_segment_control_item_get(const Evas_Object *obj, int idx)
 732 {
 733    ELM_CHECK_WIDTYPE(obj, widtype) NULL;
 734    return (Elm_Object_Item *) _item_find(obj, idx);
 735 }
 736
 737 EAPI int
 738 elm_segment_control_item_index_get(const Elm_Object_Item *it)
 739 {
 740    ELM_OBJ_ITEM_CHECK_OR_RETURN(it, -1);
 741    return ((Elm_Segment_Item *)it)->seg_index;
 742 }