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