src/lib/elm_index.c

   1 #include <Elementary.h>
   2 #include "elm_priv.h"
   3 #include "els_box.h"
   4
   5 typedef struct _Widget_Data Widget_Data;
   6 typedef struct _Elm_Index_Item Elm_Index_Item;
   7
   8 struct _Widget_Data
   9 {
  10    Evas_Object *base;
  11    Evas_Object *event[2];
  12    Evas_Object *bx[2]; // 2 - for now all that's supported
  13    Eina_List *items; // 1 list. yes N levels, but only 2 for now and # of items will be small
  14    int level;
  15    Evas_Coord dx, dy;
  16    Ecore_Timer *delay;
  17    Eina_Bool level_active[2];
  18    Eina_Bool horizontal : 1;
  19    Eina_Bool active : 1;
  20    Eina_Bool down : 1;
  21 };
  22
  23 struct _Elm_Index_Item
  24 {
  25    ELM_WIDGET_ITEM;
  26    const char *letter;
  27    int level;
  28    Eina_Bool selected : 1;
  29 };
  30
  31 static const char *widtype = NULL;
  32 static void _mirrored_set(Evas_Object *obj, Eina_Bool rtl);
  33 static void _theme_hook(Evas_Object *obj);
  34 static void _sizing_eval(Evas_Object *obj);
  35 static void _index_box_auto_fill(Evas_Object *obj, Evas_Object *box, int level);
  36 static void _index_box_clear(Evas_Object *obj, Evas_Object *box, int level);
  37 static void _item_free(Elm_Index_Item *it);
  38
  39 static const char SIG_CHANGED[] = "changed";
  40 static const char SIG_DELAY_CHANGED[] = "delay,changed";
  41 static const char SIG_SELECTED[] = "selected";
  42 static const char SIG_LEVEL_UP[] = "level,up";
  43 static const char SIG_LEVEL_DOWN[] = "level,down";
  44
  45 static const Evas_Smart_Cb_Description _signals[] = {
  46    {SIG_CHANGED, ""},
  47    {SIG_DELAY_CHANGED, ""},
  48    {SIG_SELECTED, ""},
  49    {SIG_LEVEL_UP, ""},
  50    {SIG_LEVEL_DOWN, ""},
  51    {NULL, NULL}
  52 };
  53
  54 static void
  55 _del_pre_hook(Evas_Object *obj)
  56 {
  57    Widget_Data *wd = elm_widget_data_get(obj);
  58    Elm_Index_Item *it;
  59    if (!wd) return;
  60    _index_box_clear(obj, wd->bx[wd->level], wd->level);
  61    _index_box_clear(obj, wd->bx[0], 0);
  62    while (wd->items)
  63      {
  64         it = wd->items->data;
  65         _item_free(it);
  66         elm_widget_item_free(it);
  67      }
  68    if (wd->delay) ecore_timer_del(wd->delay);
  69 }
  70
  71 static void
  72 _del_hook(Evas_Object *obj)
  73 {
  74    Widget_Data *wd = elm_widget_data_get(obj);
  75    free(wd);
  76 }
  77
  78 static void
  79 _layout(Evas_Object *o, Evas_Object_Box_Data *priv, void *data)
  80 {
  81    Widget_Data *wd = data;
  82    if (!wd) return;
  83    _els_box_layout(o, priv, wd->horizontal, 1, 0);
  84 }
  85
  86 static void
  87 _signal_emit_hook(Evas_Object *obj, const char *emission, const char *source)
  88 {
  89    Widget_Data *wd = elm_widget_data_get(obj);
  90    if (!wd) return;
  91    edje_object_signal_emit(wd->base, emission, source);
  92 }
  93
  94 static void
  95 _signal_callback_add_hook(Evas_Object *obj, const char *emission, const char *source, Edje_Signal_Cb func_cb, void *data)
  96 {
  97    Widget_Data *wd = elm_widget_data_get(obj);
  98    if (!wd) return;
  99    edje_object_signal_callback_add(wd->base, emission, source, func_cb, data);
 100 }
 101
 102 static void
 103 _signal_callback_del_hook(Evas_Object *obj, const char *emission, const char *source, Edje_Signal_Cb func_cb, void *data)
 104 {
 105    Widget_Data *wd = elm_widget_data_get(obj);
 106    edje_object_signal_callback_del_full(wd->base, emission, source, func_cb,
 107                                         data);
 108 }
 109
 110 static void
 111 _mirrored_set(Evas_Object *obj, Eina_Bool rtl)
 112 {
 113    Widget_Data *wd = elm_widget_data_get(obj);
 114    if (!wd) return;
 115    if (!wd->horizontal)
 116      edje_object_mirrored_set(wd->base, rtl);
 117 }
 118
 119 static void
 120 _theme_hook(Evas_Object *obj)
 121 {
 122    Evas_Coord minw = 0, minh = 0;
 123    Widget_Data *wd = elm_widget_data_get(obj);
 124    if (!wd) return;
 125    _elm_widget_mirrored_reload(obj);
 126
 127    _index_box_clear(obj, wd->bx[0], 0);
 128    _index_box_clear(obj, wd->bx[1], 1);
 129    if (wd->horizontal)
 130      _elm_theme_object_set(obj, wd->base, "index", "base/horizontal", elm_widget_style_get(obj));
 131    else
 132      {
 133         _elm_theme_object_set(obj, wd->base, "index", "base/vertical", elm_widget_style_get(obj));
 134         _mirrored_set(obj, elm_widget_mirrored_get(obj));
 135      }
 136    edje_object_part_swallow(wd->base, "elm.swallow.event.0", wd->event[0]);
 137    elm_coords_finger_size_adjust(1, &minw, 1, &minh);
 138    evas_object_size_hint_min_set(wd->event[0], minw, minh);
 139    edje_object_part_swallow(wd->base, "elm.swallow.index.0", wd->bx[0]);
 140    if (edje_object_part_exists(wd->base, "elm.swallow.index.1"))
 141      {
 142         if (!wd->bx[1])
 143           {
 144              wd->bx[1] = evas_object_box_add(evas_object_evas_get(wd->base));
 145              evas_object_box_layout_set(wd->bx[1], _layout, wd, NULL);
 146              elm_widget_sub_object_add(obj, wd->bx[1]);
 147           }
 148         edje_object_part_swallow(wd->base, "elm.swallow.index.1", wd->bx[1]);
 149         evas_object_show(wd->bx[1]);
 150      }
 151    else if (wd->bx[1])
 152      {
 153         evas_object_del(wd->bx[1]);
 154         wd->bx[1] = NULL;
 155      }
 156    if (edje_object_part_exists(wd->base, "elm.swallow.event.1"))
 157      {
 158         if (!wd->event[1])
 159           {
 160              wd->event[1] = evas_object_rectangle_add(evas_object_evas_get(wd->base));
 161              evas_object_color_set(wd->event[1], 0, 0, 0, 0);
 162              elm_widget_sub_object_add(obj, wd->event[1]);
 163           }
 164         edje_object_part_swallow(wd->base, "elm.swallow.event.1", wd->event[1]);
 165         evas_object_size_hint_min_set(wd->event[1], minw, minh);
 166      }
 167    else if (wd->event[1])
 168      {
 169         evas_object_del(wd->event[1]);
 170         wd->event[1] = NULL;
 171      }
 172    edje_object_message_signal_process(wd->base);
 173    edje_object_scale_set(wd->base, elm_widget_scale_get(obj) * _elm_config->scale);
 174    _sizing_eval(obj);
 175    _index_box_auto_fill(obj, wd->bx[0], 0);
 176    if (wd->active)
 177      if (wd->level == 1)
 178        _index_box_auto_fill(obj, wd->bx[1], 1);
 179 }
 180
 181 static void
 182 _sizing_eval(Evas_Object *obj)
 183 {
 184    Widget_Data *wd = elm_widget_data_get(obj);
 185    Evas_Coord minw = -1, minh = -1, maxw = -1, maxh = -1;
 186    if (!wd) return;
 187    edje_object_size_min_calc(wd->base, &minw, &minh);
 188    evas_object_size_hint_min_set(obj, minw, minh);
 189    evas_object_size_hint_max_set(obj, maxw, maxh);
 190 }
 191
 192 static void
 193 _item_del_pre_hook(Elm_Object_Item *it)
 194 {
 195    ELM_OBJ_ITEM_CHECK_OR_RETURN(it);
 196    Widget_Data *wd = elm_widget_data_get(WIDGET(it));
 197    if (!wd) return;
 198    _item_free((Elm_Index_Item *) it);
 199    _index_box_clear(WIDGET(it), wd->bx[wd->level], wd->level);
 200 }
 201
 202 static Elm_Index_Item *
 203 _item_new(Evas_Object *obj, const char *letter, const void *item)
 204 {
 205    Widget_Data *wd = elm_widget_data_get(obj);
 206    Elm_Index_Item *it;
 207    if (!wd) return NULL;
 208    it = elm_widget_item_new(obj, Elm_Index_Item);
 209    if (!it) return NULL;
 210    elm_widget_item_del_pre_hook_set(it, _item_del_pre_hook);
 211    it->letter = eina_stringshare_add(letter);
 212    it->base.data = item;
 213    it->level = wd->level;
 214    return it;
 215 }
 216
 217 static Elm_Index_Item *
 218 _item_find(Evas_Object *obj, const void *item)
 219 {
 220    Widget_Data *wd = elm_widget_data_get(obj);
 221    Eina_List *l;
 222    Elm_Index_Item *it;
 223    if (!wd) return NULL;
 224    EINA_LIST_FOREACH(wd->items, l, it)
 225      if (it->base.data == item) return it;
 226    return NULL;
 227 }
 228
 229 static void
 230 _item_free(Elm_Index_Item *it)
 231 {
 232    Widget_Data *wd = elm_widget_data_get(WIDGET(it));
 233    if (!wd) return;
 234    wd->items = eina_list_remove(wd->items, it);
 235    eina_stringshare_del(it->letter);
 236 }
 237
 238 // FIXME: always have index filled
 239 static void
 240 _index_box_auto_fill(Evas_Object *obj, Evas_Object *box, int level)
 241 {
 242    Widget_Data *wd = elm_widget_data_get(obj);
 243    Eina_Bool rtl;
 244    Eina_List *l;
 245    Elm_Index_Item *it;
 246    Evas_Coord mw, mh, w, h;
 247    int i = 0;
 248    if (!wd) return;
 249    if (wd->level_active[level]) return;
 250    rtl = elm_widget_mirrored_get(obj);
 251    evas_object_geometry_get(box, NULL, NULL, &w, &h);
 252    EINA_LIST_FOREACH(wd->items, l, it)
 253      {
 254         Evas_Object *o;
 255         const char *stacking;
 256
 257         if (it->level != level) continue;
 258         o = edje_object_add(evas_object_evas_get(obj));
 259         VIEW(it) = o;
 260         edje_object_mirrored_set(VIEW(it), rtl);
 261         if (i & 0x1)
 262           _elm_theme_object_set(obj, o, "index", "item_odd/vertical", elm_widget_style_get(obj));
 263         else
 264           _elm_theme_object_set(obj, o, "index", "item/vertical", elm_widget_style_get(obj));
 265         edje_object_part_text_set(o, "elm.text", it->letter);
 266         edje_object_size_min_restricted_calc(o, &mw, &mh, 0, 0);
 267         evas_object_size_hint_min_set(o, mw, mh);
 268         evas_object_size_hint_weight_set(o, EVAS_HINT_EXPAND, EVAS_HINT_EXPAND);
 269         evas_object_size_hint_align_set(o, EVAS_HINT_FILL, EVAS_HINT_FILL);
 270         elm_widget_sub_object_add(obj, o);
 271         evas_object_box_append(box, o);
 272         stacking = edje_object_data_get(o, "stacking");
 273         if (stacking)
 274           {
 275              if (!strcmp(stacking, "below")) evas_object_lower(o);
 276              else if (!strcmp(stacking, "above")) evas_object_raise(o);
 277           }
 278         evas_object_show(o);
 279         i++;
 280         evas_object_smart_calculate(box); // force a calc so we know the size
 281         evas_object_size_hint_min_get(box, &mw, &mh);
 282         if (mh > h)
 283           {
 284              _index_box_clear(obj, box, level);
 285              if (i > 0)
 286                {
 287                   // FIXME: only i objects fit! try again. overflows right now
 288                }
 289           }
 290      }
 291    evas_object_smart_calculate(box);
 292    wd->level_active[level] = 1;
 293 }
 294
 295 static void
 296 _index_box_clear(Evas_Object *obj, Evas_Object *box __UNUSED__, int level)
 297 {
 298    Widget_Data *wd = elm_widget_data_get(obj);
 299    Eina_List *l;
 300    Elm_Index_Item *it;
 301    if (!wd) return;
 302    if (!wd->level_active[level]) return;
 303    EINA_LIST_FOREACH(wd->items, l, it)
 304      {
 305         if (!VIEW(it)) continue;
 306         if (it->level != level) continue;
 307         evas_object_del(VIEW(it));
 308         VIEW(it) = NULL;
 309      }
 310    wd->level_active[level] = 0;
 311 }
 312
 313 static Eina_Bool
 314 _delay_change(void *data)
 315 {
 316    Widget_Data *wd = elm_widget_data_get(data);
 317    Elm_Object_Item *item;
 318    if (!wd) return ECORE_CALLBACK_CANCEL;
 319    wd->delay = NULL;
 320    item = elm_index_item_selected_get(data, wd->level);
 321    if (item) evas_object_smart_callback_call(data, SIG_DELAY_CHANGED, item);
 322    return ECORE_CALLBACK_CANCEL;
 323 }
 324
 325 static void
 326 _sel_eval(Evas_Object *obj, Evas_Coord evx, Evas_Coord evy)
 327 {
 328    Widget_Data *wd = elm_widget_data_get(obj);
 329    Elm_Index_Item *it, *it_closest, *it_last;
 330    Eina_List *l;
 331    Evas_Coord x, y, w, h, bx, by, bw, bh, xx, yy;
 332    double cdv = 0.5;
 333    Evas_Coord dist;
 334    char *label = NULL, *last = NULL;
 335    int i;
 336    if (!wd) return;
 337    for (i = 0; i <= wd->level; i++)
 338      {
 339         it_last = NULL;
 340         it_closest  = NULL;
 341         dist = 0x7fffffff;
 342         evas_object_geometry_get(wd->bx[i], &bx, &by, &bw, &bh);
 343         EINA_LIST_FOREACH(wd->items, l, it)
 344           {
 345              if (!((it->level == i) && (VIEW(it)))) continue;
 346              if ((VIEW(it)) && (it->level != wd->level))
 347                {
 348                   if (it->selected)
 349                     {
 350                        it_closest = it;
 351                        break;
 352                     }
 353                   continue;
 354                }
 355              if (it->selected)
 356                {
 357                   it_last = it;
 358                   it->selected = 0;
 359                }
 360              evas_object_geometry_get(VIEW(it), &x, &y, &w, &h);
 361              xx = x + (w / 2);
 362              yy = y + (h / 2);
 363              x = evx - xx;
 364              y = evy - yy;
 365              x = (x * x) + (y * y);
 366              if ((x < dist) || (!it_closest))
 367                {
 368                   if (wd->horizontal)
 369                     cdv = (double)(xx - bx) / (double)bw;
 370                   else
 371                     cdv = (double)(yy - by) / (double)bh;
 372                   it_closest = it;
 373                   dist = x;
 374                }
 375           }
 376         if ((!i) && (!wd->level))
 377           edje_object_part_drag_value_set(wd->base, "elm.dragable.index.1",
 378                                           cdv, cdv);
 379         if (it_closest) it_closest->selected = 1;
 380         if (it_closest != it_last)
 381           {
 382              if (it_last)
 383                {
 384                   const char *stacking, *selectraise;
 385
 386                   it = it_last;
 387                   edje_object_signal_emit(VIEW(it), "elm,state,inactive", "elm");
 388                   stacking = edje_object_data_get(VIEW(it), "stacking");
 389                   selectraise = edje_object_data_get(VIEW(it), "selectraise");
 390                   if ((selectraise) && (!strcmp(selectraise, "on")))
 391                     {
 392                        if ((stacking) && (!strcmp(stacking, "below")))
 393                          evas_object_lower(VIEW(it));
 394                     }
 395                }
 396              if (it_closest)
 397                {
 398                   const char *selectraise;
 399
 400                   it = it_closest;
 401                   edje_object_signal_emit(VIEW(it), "elm,state,active", "elm");
 402                   selectraise = edje_object_data_get(VIEW(it), "selectraise");
 403                   if ((selectraise) && (!strcmp(selectraise, "on")))
 404                     evas_object_raise(VIEW(it));
 405                   evas_object_smart_callback_call((void *)obj, SIG_CHANGED, (void *)it);
 406                   if (wd->delay) ecore_timer_del(wd->delay);
 407                   wd->delay = ecore_timer_add(0.2, _delay_change, obj);
 408                }
 409           }
 410         if (it_closest)
 411           {
 412              it = it_closest;
 413              if (!last)
 414                last = strdup(it->letter);
 415              else
 416                {
 417                   if (!label) label = strdup(last);
 418                   else
 419                     {
 420                        /* FIXME: realloc return NULL if the request fails */
 421                        label = realloc(label, strlen(label) + strlen(last) + 1);
 422                        strcat(label, last);
 423                     }
 424                   free(last);
 425                   last = strdup(it->letter);
 426                }
 427           }
 428      }
 429    if (!label) label = strdup("");
 430    if (!last) last = strdup("");
 431    edje_object_part_text_set(wd->base, "elm.text.body", label);
 432    edje_object_part_text_set(wd->base, "elm.text", last);
 433    free(label);
 434    free(last);
 435 }
 436
 437 static void
 438 _wheel(void *data, Evas *e __UNUSED__, Evas_Object *o __UNUSED__, void *event_info __UNUSED__)
 439 {
 440    Widget_Data *wd = elm_widget_data_get(data);
 441    //   Evas_Event_Mouse_Wheel *ev = event_info;
 442    //   Evas_Object *obj = o;
 443    if (!wd) return;
 444 }
 445
 446 static void
 447 _mouse_down(void *data, Evas *e __UNUSED__, Evas_Object *o __UNUSED__, void *event_info)
 448 {
 449    Widget_Data *wd = elm_widget_data_get(data);
 450    Evas_Event_Mouse_Down *ev = event_info;
 451    Evas_Coord x, y, w;
 452    if (!wd) return;
 453    if (ev->button != 1) return;
 454    wd->down = 1;
 455    evas_object_geometry_get(wd->base, &x, &y, &w, NULL);
 456    wd->dx = ev->canvas.x - x;
 457    wd->dy = ev->canvas.y - y;
 458    elm_index_active_set(data, 1);
 459    _sel_eval(data, ev->canvas.x, ev->canvas.y);
 460    edje_object_part_drag_value_set(wd->base, "elm.dragable.pointer",
 461                                    (!edje_object_mirrored_get(wd->base)) ? wd->dx : (wd->dx - w), wd->dy);
 462    if (wd->items)
 463       edje_object_signal_emit(wd->base, "elm,indicator,state,active", "elm");
 464 }
 465
 466 static void
 467 _mouse_up(void *data, Evas *e __UNUSED__, Evas_Object *o __UNUSED__, void *event_info)
 468 {
 469    Widget_Data *wd = elm_widget_data_get(data);
 470    Evas_Event_Mouse_Up *ev = event_info;
 471    Elm_Object_Item *item;
 472    if (!wd) return;
 473    if (ev->button != 1) return;
 474    wd->down = 0;
 475    item = elm_index_item_selected_get(data, wd->level);
 476    if (item) evas_object_smart_callback_call(data, SIG_SELECTED, item);
 477    elm_index_active_set(data, 0);
 478    edje_object_signal_emit(wd->base, "elm,state,level,0", "elm");
 479    edje_object_signal_emit(wd->base, "elm,indicator,state,inactive", "elm");
 480 }
 481
 482 static void
 483 _mouse_move(void *data, Evas *e __UNUSED__, Evas_Object *o __UNUSED__, void *event_info)
 484 {
 485    Widget_Data *wd = elm_widget_data_get(data);
 486    Evas_Event_Mouse_Move *ev = event_info;
 487    Evas_Coord minw = 0, minh = 0, x, y, dx, adx, w;
 488    char buf[1024];
 489    if (!wd) return;
 490    if (!wd->down) return;
 491    elm_coords_finger_size_adjust(1, &minw, 1, &minh);
 492    evas_object_geometry_get(wd->base, &x, &y, &w, NULL);
 493    x = ev->cur.canvas.x - x;
 494    y = ev->cur.canvas.y - y;
 495    dx = x - wd->dx;
 496    adx = dx;
 497    if (adx < 0) adx = -dx;
 498    edje_object_part_drag_value_set(wd->base, "elm.dragable.pointer"
 499                                    , (!edje_object_mirrored_get(wd->base)) ? x : (x - w), y);
 500    if (!wd->horizontal)
 501      {
 502         if (adx > minw)
 503           {
 504              if (!wd->level)
 505                {
 506                   wd->level = 1;
 507                   snprintf(buf, sizeof(buf), "elm,state,level,%i", wd->level);
 508                   edje_object_signal_emit(wd->base, buf, "elm");
 509                   evas_object_smart_callback_call(data, SIG_LEVEL_UP, NULL);
 510                }
 511           }
 512         else
 513           {
 514              if (wd->level == 1)
 515                {
 516                   wd->level = 0;
 517                   snprintf(buf, sizeof(buf), "elm,state,level,%i", wd->level);
 518                   edje_object_signal_emit(wd->base, buf, "elm");
 519                   evas_object_smart_callback_call(data, SIG_LEVEL_DOWN, NULL);
 520                }
 521           }
 522      }
 523    _sel_eval(data, ev->cur.canvas.x, ev->cur.canvas.y);
 524 }
 525
 526 EAPI Evas_Object *
 527 elm_index_add(Evas_Object *parent)
 528 {
 529    Evas_Object *obj;
 530    Evas_Object *o;
 531    Evas *e;
 532    Widget_Data *wd;
 533    Evas_Coord minw, minh;
 534
 535    ELM_WIDGET_STANDARD_SETUP(wd, Widget_Data, parent, e, obj, NULL);
 536
 537    ELM_SET_WIDTYPE(widtype, "index");
 538    elm_widget_type_set(obj, "index");
 539    elm_widget_sub_object_add(parent, obj);
 540    elm_widget_data_set(obj, wd);
 541    elm_widget_del_hook_set(obj, _del_hook);
 542    elm_widget_del_pre_hook_set(obj, _del_pre_hook);
 543    elm_widget_theme_hook_set(obj, _theme_hook);
 544    elm_widget_signal_emit_hook_set(obj, _signal_emit_hook);
 545    elm_widget_signal_callback_add_hook_set(obj, _signal_callback_add_hook);
 546    elm_widget_signal_callback_del_hook_set(obj, _signal_callback_del_hook);
 547    elm_widget_can_focus_set(obj, EINA_FALSE);
 548
 549    wd->horizontal = EINA_FALSE;
 550
 551    wd->base = edje_object_add(e);
 552    _elm_theme_object_set(obj, wd->base, "index", "base/vertical", "default");
 553    elm_widget_resize_object_set(obj, wd->base);
 554
 555    o = evas_object_rectangle_add(e);
 556    wd->event[0] = o;
 557    evas_object_color_set(o, 0, 0, 0, 0);
 558    minw = minh = 0;
 559    elm_coords_finger_size_adjust(1, &minw, 1, &minh);
 560    evas_object_size_hint_min_set(o, minw, minh);
 561    edje_object_part_swallow(wd->base, "elm.swallow.event.0", o);
 562    elm_widget_sub_object_add(obj, o);
 563    evas_object_event_callback_add(o, EVAS_CALLBACK_MOUSE_WHEEL, _wheel, obj);
 564    evas_object_event_callback_add(o, EVAS_CALLBACK_MOUSE_DOWN, _mouse_down, obj);
 565    evas_object_event_callback_add(o, EVAS_CALLBACK_MOUSE_UP, _mouse_up, obj);
 566    evas_object_event_callback_add(o, EVAS_CALLBACK_MOUSE_MOVE, _mouse_move, obj);
 567    evas_object_show(o);
 568    if (edje_object_part_exists(wd->base, "elm.swallow.event.1"))
 569      {
 570         o = evas_object_rectangle_add(e);
 571         wd->event[1] = o;
 572         evas_object_color_set(o, 0, 0, 0, 0);
 573         evas_object_size_hint_min_set(o, minw, minh);
 574         edje_object_part_swallow(wd->base, "elm.swallow.event.1", o);
 575         elm_widget_sub_object_add(obj, o);
 576      }
 577
 578    wd->bx[0] = evas_object_box_add(e);
 579    evas_object_box_layout_set(wd->bx[0], _layout, wd, NULL);
 580    elm_widget_sub_object_add(obj, wd->bx[0]);
 581    edje_object_part_swallow(wd->base, "elm.swallow.index.0", wd->bx[0]);
 582    evas_object_show(wd->bx[0]);
 583
 584    if (edje_object_part_exists(wd->base, "elm.swallow.index.1"))
 585      {
 586         wd->bx[1] = evas_object_box_add(e);
 587         evas_object_box_layout_set(wd->bx[1], _layout, wd, NULL);
 588         elm_widget_sub_object_add(obj, wd->bx[1]);
 589         edje_object_part_swallow(wd->base, "elm.swallow.index.1", wd->bx[1]);
 590         evas_object_show(wd->bx[1]);
 591      }
 592
 593    evas_object_smart_callbacks_descriptions_set(obj, _signals);
 594
 595    _mirrored_set(obj, elm_widget_mirrored_get(obj));
 596    _sizing_eval(obj);
 597    return obj;
 598 }
 599
 600 EAPI void
 601 elm_index_active_set(Evas_Object *obj, Eina_Bool active)
 602 {
 603    ELM_CHECK_WIDTYPE(obj, widtype);
 604    Widget_Data *wd = elm_widget_data_get(obj);
 605    if (!wd) return;
 606    if (wd->active == active) return;
 607    wd->active = active;
 608    wd->level = 0;
 609    if (wd->active)
 610      {
 611         _index_box_clear(obj, wd->bx[1], 1);
 612         _index_box_auto_fill(obj, wd->bx[0], 0);
 613         edje_object_signal_emit(wd->base, "elm,state,active", "elm");
 614      }
 615    else
 616      edje_object_signal_emit(wd->base, "elm,state,inactive", "elm");
 617 }
 618
 619 EAPI Eina_Bool
 620 elm_index_active_get(const Evas_Object *obj)
 621 {
 622    ELM_CHECK_WIDTYPE(obj, widtype) EINA_FALSE;
 623    Widget_Data *wd = elm_widget_data_get(obj);
 624    if (!wd) return EINA_FALSE;
 625    return wd->active;
 626 }
 627
 628 EAPI void
 629 elm_index_item_level_set(Evas_Object *obj, int level)
 630 {
 631    ELM_CHECK_WIDTYPE(obj, widtype);
 632    Widget_Data *wd = elm_widget_data_get(obj);
 633    if (!wd) return;
 634    if (wd->level == level) return;
 635    wd->level = level;
 636 }
 637
 638 EAPI int
 639 elm_index_item_level_get(const Evas_Object *obj)
 640 {
 641    ELM_CHECK_WIDTYPE(obj, widtype) 0;
 642    Widget_Data *wd = elm_widget_data_get(obj);
 643    if (!wd) return 0;
 644    return wd->level;
 645 }
 646
 647 EAPI Elm_Object_Item *
 648 elm_index_item_selected_get(const Evas_Object *obj, int level)
 649 {
 650    ELM_CHECK_WIDTYPE(obj, widtype) NULL;
 651    Widget_Data *wd = elm_widget_data_get(obj);
 652    Eina_List *l;
 653    Elm_Index_Item *it;
 654    if (!wd) return NULL;
 655    EINA_LIST_FOREACH(wd->items, l, it)
 656      {
 657         if ((it->selected) && (it->level == level))
 658           return (Elm_Object_Item *) it;
 659      }
 660    return NULL;
 661 }
 662
 663 EAPI void
 664 elm_index_item_append(Evas_Object *obj, const char *letter, const void *item)
 665 {
 666    ELM_CHECK_WIDTYPE(obj, widtype);
 667    Widget_Data *wd = elm_widget_data_get(obj);
 668    Elm_Index_Item *it;
 669    if (!wd) return;
 670    it = _item_new(obj, letter, item);
 671    if (!it) return;
 672    wd->items = eina_list_append(wd->items, it);
 673    _index_box_clear(obj, wd->bx[wd->level], wd->level);
 674 }
 675
 676 EAPI void
 677 elm_index_item_prepend(Evas_Object *obj, const char *letter, const void *item)
 678 {
 679    ELM_CHECK_WIDTYPE(obj, widtype);
 680    Widget_Data *wd = elm_widget_data_get(obj);
 681    Elm_Index_Item *it;
 682
 683    if (!wd) return;
 684    it = _item_new(obj, letter, item);
 685    if (!it) return;
 686    wd->items = eina_list_prepend(wd->items, it);
 687    _index_box_clear(obj, wd->bx[wd->level], wd->level);
 688 }
 689
 690 EAPI void
 691 elm_index_item_append_relative(Evas_Object *obj, const char *letter, const void *item, const Elm_Object_Item *relative)
 692 {
 693    ELM_CHECK_WIDTYPE(obj, widtype);
 694    Widget_Data *wd = elm_widget_data_get(obj);
 695    Elm_Index_Item *it;
 696    if (!wd) return;
 697    if (!relative)
 698      {
 699         elm_index_item_append(obj, letter, item);
 700         return;
 701      }
 702    it = _item_new(obj, letter, item);
 703    if (!it) return;
 704    wd->items = eina_list_append_relative(wd->items, it, relative);
 705    _index_box_clear(obj, wd->bx[wd->level], wd->level);
 706 }
 707
 708 EAPI void
 709 elm_index_item_prepend_relative(Evas_Object *obj, const char *letter, const void *item, const Elm_Object_Item *relative)
 710 {
 711    ELM_CHECK_WIDTYPE(obj, widtype);
 712    Widget_Data *wd = elm_widget_data_get(obj);
 713    Elm_Index_Item *it;
 714    if (!wd) return;
 715    if (!relative)
 716      {
 717         elm_index_item_prepend(obj, letter, item);
 718         return;
 719      }
 720    it = _item_new(obj, letter, item);
 721    if (!it) return;
 722    wd->items = eina_list_prepend_relative(wd->items, it, relative);
 723    _index_box_clear(obj, wd->bx[wd->level], wd->level);
 724 }
 725
 726 EAPI void
 727 elm_index_item_sorted_insert(Evas_Object *obj, const char *letter, const void *item, Eina_Compare_Cb cmp_func, Eina_Compare_Cb cmp_data_func)
 728 {
 729    ELM_CHECK_WIDTYPE(obj, widtype);
 730    Widget_Data *wd = elm_widget_data_get(obj);
 731    Eina_List *lnear;
 732    Elm_Index_Item *it;
 733    int cmp;
 734
 735    if (!wd) return;
 736    if (!(wd->items))
 737      {
 738         elm_index_item_append(obj, letter, item);
 739         return;
 740      }
 741
 742    it = _item_new(obj, letter, item);
 743    if (!it) return;
 744
 745    lnear = eina_list_search_sorted_near_list(wd->items, cmp_func, it, &cmp);
 746    if (cmp < 0)
 747      wd->items =  eina_list_append_relative_list(wd->items, it, lnear);
 748    else if (cmp > 0)
 749      wd->items = eina_list_prepend_relative_list(wd->items, it, lnear);
 750    else
 751      {
 752         /* If cmp_data_func is not provided, append a duplicated item */
 753         if (!cmp_data_func)
 754           wd->items =  eina_list_append_relative_list(wd->items, it, lnear);
 755         else
 756           {
 757              Elm_Index_Item *p_it = eina_list_data_get(lnear);
 758              if (cmp_data_func(p_it->base.data, it->base.data) >= 0)
 759                p_it->base.data = it->base.data;
 760              _item_free(it);
 761              elm_widget_item_free(it);
 762           }
 763      }
 764
 765    _index_box_clear(obj, wd->bx[wd->level], wd->level);
 766 }
 767
 768 EAPI void
 769 elm_index_item_del(Evas_Object *obj __UNUSED__, Elm_Object_Item *it)
 770 {
 771    elm_object_item_del(it);
 772 }
 773
 774 EAPI Elm_Object_Item *
 775 elm_index_item_find(Evas_Object *obj, const void *item)
 776 {
 777    ELM_CHECK_WIDTYPE(obj, widtype) NULL;
 778    Widget_Data *wd = elm_widget_data_get(obj);
 779    if (!wd) return NULL;
 780    return (Elm_Object_Item *) _item_find(obj, item);
 781 }
 782
 783 EAPI void
 784 elm_index_item_clear(Evas_Object *obj)
 785 {
 786    ELM_CHECK_WIDTYPE(obj, widtype);
 787    Widget_Data *wd = elm_widget_data_get(obj);
 788    Elm_Index_Item *it;
 789    Eina_List *l, *clear = NULL;
 790    if (!wd) return;
 791    _index_box_clear(obj, wd->bx[wd->level], wd->level);
 792    EINA_LIST_FOREACH(wd->items, l, it)
 793      {
 794         if (it->level != wd->level) continue;
 795         clear = eina_list_append(clear, it);
 796      }
 797    EINA_LIST_FREE(clear, it)
 798      {
 799         _item_free(it);
 800         elm_widget_item_free(it);
 801      }
 802 }
 803
 804 EAPI void
 805 elm_index_item_go(Evas_Object *obj, int level __UNUSED__)
 806 {
 807    ELM_CHECK_WIDTYPE(obj, widtype);
 808    Widget_Data *wd = elm_widget_data_get(obj);
 809    if (!wd) return;
 810    _index_box_auto_fill(obj, wd->bx[0], 0);
 811    if (wd->level == 1) _index_box_auto_fill(obj, wd->bx[1], 1);
 812 }
 813
 814 EAPI void *
 815 elm_index_item_data_get(const Elm_Object_Item *it)
 816 {
 817    return elm_object_item_data_get(it);
 818 }
 819
 820 EAPI void
 821 elm_index_item_data_set(Elm_Object_Item *it, const void *data)
 822 {
 823    elm_object_item_data_set(it, (void *) data);
 824 }
 825
 826 EAPI void
 827 elm_index_item_del_cb_set(Elm_Object_Item *it, Evas_Smart_Cb func)
 828 {
 829    elm_object_item_del_cb_set(it, func);
 830 }
 831
 832 EAPI const char *
 833 elm_index_item_letter_get(const Elm_Object_Item *it)
 834 {
 835    ELM_OBJ_ITEM_CHECK_OR_RETURN(it, NULL);
 836    return ((Elm_Index_Item *) it)->letter;
 837 }
 838