src/lib/elm_index.c

   1 #include <Elementary.h>
   2 #include "elm_priv.h"
   3 #include "els_box.h"
   4
   5 #define MIN_GRP_SIZE 2 //for symmetry it is 2, otherwise it can be 1 and zero have no meaning.
   6 #define MIN_PIXEL_VALUE 1 //Min pixel value is highly dependent on touch sensitivity support.
   7 #define MIN_OBJ_HEIGHT 24 //should be taken from .edc file.
   8 /*
   9  *  use for find view toplevel
  10  */
  11 #define SET_VIEW_LEVEL(wd, view_level)\
  12    view_level = wd->level;\
  13    while ((!wd->tot_items_count[view_level]) && view_level)\
  14      {\
  15         view_level--; \
  16      }
  17
  18 typedef struct _Widget_Data Widget_Data;
  19
  20 typedef struct _PlacementPart PlacementPart;
  21 typedef struct _Elm_Index_Item Elm_Index_Item;
  22
  23 struct _Widget_Data
  24 {
  25    Evas_Object *base;
  26    Evas_Object *event[2];
  27    Evas_Object *bx[2]; // 2 - for now all that's supported
  28    Eina_List *items; // 1 list. yes N levels, but only 2 for now and # of items will be small
  29    char *popup_str[2];
  30    int level;
  31    int max_supp_items_count;
  32    int tot_items_count[2];
  33    int min_obj_height, max_grp_size;
  34    int min_1st_level_obj_height;
  35    int items_count;
  36    Evas_Coord dx, dy;
  37    Evas_Coord pwidth, pheight;
  38    Ecore_Timer *delay;
  39    const char *special_char;
  40    Eina_Bool level_active[2];
  41    Eina_Bool horizontal : 1;
  42    Eina_Bool active : 1;
  43    Eina_Bool down : 1;
  44    Eina_Bool hide_button : 1;
  45    double scale_factor;
  46 };
  47
  48 struct _Elm_Index_Item
  49 {
  50    ELM_WIDGET_ITEM;
  51    const char *letter, *vis_letter;
  52    int level, size;
  53    Eina_Bool selected : 1;
  54 };
  55
  56 struct _PlacementPart
  57 {
  58    int start;
  59    int count;
  60 };
  61
  62 static const char *widtype = NULL;
  63
  64 static void _del_hook(Evas_Object *obj);
  65 static void _mirrored_set(Evas_Object *obj, Eina_Bool rtl);
  66 static void _theme_hook(Evas_Object *obj);
  67 static void _sizing_eval(Evas_Object *obj);
  68 static void _index_box_auto_fill(Evas_Object *obj, Evas_Object *box, int level);
  69 static void _index_box_clear(Evas_Object *obj, Evas_Object *box, int level);
  70 static void _item_free(Elm_Index_Item *it);
  71 static void _index_process(Evas_Object *obj);
  72
  73 static const char SIG_CHANGED[] = "changed";
  74 static const char SIG_DELAY_CHANGED[] = "delay,changed";
  75 static const char SIG_SELECTED[] = "selected";
  76 static const char SIG_LEVEL_UP[] = "level,up";
  77 static const char SIG_LEVEL_DOWN[] = "level,down";
  78
  79 static const Evas_Smart_Cb_Description _signals[] = {
  80    {SIG_CHANGED, ""},
  81    {SIG_DELAY_CHANGED, ""},
  82    {SIG_SELECTED, ""},
  83    {SIG_LEVEL_UP, ""},
  84    {SIG_LEVEL_DOWN, ""},
  85    {NULL, NULL}
  86 };
  87
  88 /* Free a block allocated by `malloc', `realloc' or `calloc' one by one*/
  89
  90 static void
  91 _del_pre_hook(Evas_Object *obj)
  92 {
  93    Widget_Data *wd = elm_widget_data_get(obj);
  94    Elm_Index_Item *it;
  95    if (!wd) return;
  96    _index_box_clear(obj, wd->bx[wd->level], wd->level);
  97    _index_box_clear(obj, wd->bx[0], 0);
  98    while (wd->items)
  99      {
 100         it = wd->items->data;
 101         _item_free(it);
 102         elm_widget_item_free(it);
 103      }
 104    if (wd->delay) ecore_timer_del(wd->delay);
 105    if(wd->popup_str[0]) free(wd->popup_str[0]);
 106    if(wd->popup_str[1]) free(wd->popup_str[1]);
 107 }
 108
 109 static void
 110 _del_hook(Evas_Object *obj)
 111 {
 112    Widget_Data *wd = elm_widget_data_get(obj);
 113    free(wd);
 114 }
 115
 116 static void
 117 _layout(Evas_Object *o, Evas_Object_Box_Data *priv, void *data)
 118 {
 119    Widget_Data *wd = data;
 120    if (!wd) return;
 121    _els_box_layout(o, priv, wd->horizontal, 1, 0);
 122 }
 123
 124 static void
 125 _signal_emit_hook(Evas_Object *obj, const char *emission, const char *source)
 126 {
 127    Widget_Data *wd = elm_widget_data_get(obj);
 128    if (!wd) return;
 129    edje_object_signal_emit(wd->base, emission, source);
 130 }
 131
 132 static void
 133 _signal_callback_add_hook(Evas_Object *obj, const char *emission, const char *source, Edje_Signal_Cb func_cb, void *data)
 134 {
 135    Widget_Data *wd = elm_widget_data_get(obj);
 136    if (!wd) return;
 137    edje_object_signal_callback_add(wd->base, emission, source, func_cb, data);
 138 }
 139
 140 static void
 141 _signal_callback_del_hook(Evas_Object *obj, const char *emission, const char *source, Edje_Signal_Cb func_cb, void *data)
 142 {
 143    Widget_Data *wd = elm_widget_data_get(obj);
 144    edje_object_signal_callback_del_full(wd->base, emission, source, func_cb,
 145                                         data);
 146 }
 147
 148 static void
 149 _mirrored_set(Evas_Object *obj, Eina_Bool rtl)
 150 {
 151    Widget_Data *wd = elm_widget_data_get(obj);
 152    if (!wd) return;
 153    if (!wd->horizontal)
 154      edje_object_mirrored_set(wd->base, rtl);
 155 }
 156
 157 static void
 158 _theme_hook(Evas_Object *obj)
 159 {
 160    Evas_Coord minw = 0, minh = 0;
 161    Widget_Data *wd = elm_widget_data_get(obj);
 162    if (!wd) return;
 163    _elm_widget_mirrored_reload(obj);
 164
 165    _index_box_clear(obj, wd->bx[0], 0);
 166    _index_box_clear(obj, wd->bx[1], 1);
 167    if (wd->horizontal)
 168      _elm_theme_object_set(obj, wd->base, "index", "base/horizontal", elm_widget_style_get(obj));
 169    else
 170      {
 171         _elm_theme_object_set(obj, wd->base, "index", "base/vertical", elm_widget_style_get(obj));
 172         _mirrored_set(obj, elm_widget_mirrored_get(obj));
 173      }
 174    edje_object_part_swallow(wd->base, "elm.swallow.event.0", wd->event[0]);
 175    elm_coords_finger_size_adjust(1, &minw, 1, &minh);
 176    evas_object_size_hint_min_set(wd->event[0], minw, minh);
 177    edje_object_part_swallow(wd->base, "elm.swallow.index.0", wd->bx[0]);
 178    if (edje_object_part_exists(wd->base, "elm.swallow.index.1"))
 179      {
 180         if (!wd->bx[1])
 181           {
 182              wd->bx[1] = evas_object_box_add(evas_object_evas_get(wd->base));
 183              evas_object_box_layout_set(wd->bx[1], _layout, wd, NULL);
 184              elm_widget_sub_object_add(obj, wd->bx[1]);
 185           }
 186         edje_object_part_swallow(wd->base, "elm.swallow.index.1", wd->bx[1]);
 187         evas_object_show(wd->bx[1]);
 188      }
 189    else if (wd->bx[1])
 190      {
 191         evas_object_del(wd->bx[1]);
 192         wd->bx[1] = NULL;
 193      }
 194    if (edje_object_part_exists(wd->base, "elm.swallow.event.1"))
 195      {
 196         if (!wd->event[1])
 197           {
 198              wd->event[1] = evas_object_rectangle_add(evas_object_evas_get(wd->base));
 199              evas_object_color_set(wd->event[1], 0, 0, 0, 0);
 200              elm_widget_sub_object_add(obj, wd->event[1]);
 201           }
 202         edje_object_part_swallow(wd->base, "elm.swallow.event.1", wd->event[1]);
 203         evas_object_size_hint_min_set(wd->event[1], minw, minh);
 204      }
 205    else if (wd->event[1])
 206      {
 207         evas_object_del(wd->event[1]);
 208         wd->event[1] = NULL;
 209      }
 210    edje_object_message_signal_process(wd->base);
 211    edje_object_scale_set(wd->base, elm_widget_scale_get(obj) * _elm_config->scale);
 212    _sizing_eval(obj);
 213    _index_box_auto_fill(obj, wd->bx[0], 0);
 214    if (wd->active)
 215      if (wd->level == 1)
 216        _index_box_auto_fill(obj, wd->bx[1], 1);
 217 }
 218
 219 static void
 220 _sizing_eval(Evas_Object *obj)
 221 {
 222    Widget_Data *wd = elm_widget_data_get(obj);
 223    Evas_Coord minw = -1, minh = -1, maxw = -1, maxh = -1;
 224    if (!wd) return;
 225    edje_object_size_min_calc(wd->base, &minw, &minh);
 226    evas_object_size_hint_min_set(obj, minw, minh);
 227    evas_object_size_hint_max_set(obj, maxw, maxh);
 228 }
 229
 230 static void
 231 _item_del_pre_hook(Elm_Object_Item *it)
 232 {
 233    ELM_OBJ_ITEM_CHECK_OR_RETURN(it);
 234    Widget_Data *wd = elm_widget_data_get(WIDGET(it));
 235    if (!wd) return;
 236    _item_free((Elm_Index_Item *) it);
 237    _index_box_clear(WIDGET(it), wd->bx[wd->level], wd->level);
 238 }
 239
 240 static Elm_Index_Item *
 241 _item_new(Evas_Object *obj, const char *letter, const void *item)
 242 {
 243    Widget_Data *wd = elm_widget_data_get(obj);
 244    Elm_Index_Item *it;
 245    if (!wd) return NULL;
 246    it = elm_widget_item_new(obj, Elm_Index_Item);
 247    if (!it) return NULL;
 248
 249    it->base.data = item;
 250    it->level = wd->level;
 251    if(wd->level == 0)
 252      it->size =  wd->min_obj_height;
 253    else
 254      it->size =  wd->min_1st_level_obj_height;
 255    if(letter)
 256      {
 257         it->letter = eina_stringshare_add(letter);
 258         it->vis_letter = eina_stringshare_add(letter);
 259      }
 260    else
 261      {
 262         _item_free(it);
 263         return NULL;
 264      }
 265    elm_widget_item_del_pre_hook_set(it, _item_del_pre_hook);
 266
 267    return it;
 268 }
 269
 270 static Elm_Index_Item *
 271 _item_find(Evas_Object *obj, const void *item)
 272 {
 273    Widget_Data *wd = elm_widget_data_get(obj);
 274    Eina_List *l;
 275    Elm_Index_Item *it;
 276    if (!wd) return NULL;
 277    EINA_LIST_FOREACH(wd->items, l, it)
 278      if (it->base.data == item) return it;
 279    return NULL;
 280 }
 281
 282 static void
 283 _item_free(Elm_Index_Item *it)
 284 {
 285    Widget_Data *wd = elm_widget_data_get(WIDGET(it));
 286    if (!wd) return;
 287
 288    wd->items = eina_list_remove(wd->items, it);
 289    elm_widget_item_pre_notify_del(it);
 290    if (it->letter) eina_stringshare_del(it->letter);
 291    if (it->vis_letter) eina_stringshare_del(it->vis_letter);
 292 }
 293
 294 // FIXME: always have index filled
 295 static void
 296 _index_box_auto_fill(Evas_Object *obj, Evas_Object *box, int level)
 297 {
 298    Widget_Data *wd = elm_widget_data_get(obj);
 299    Eina_Bool rtl;
 300    Eina_List *l;
 301    Elm_Index_Item *it;
 302    Evas_Coord mw, mh, w, h;
 303    int i = 0;
 304    if (!wd) return;
 305    if (wd->level_active[level]) return;
 306    rtl = elm_widget_mirrored_get(obj);
 307    evas_object_geometry_get(box, NULL, NULL, &w, &h);
 308    EINA_LIST_FOREACH(wd->items, l, it)
 309      {
 310         Evas_Object *o;
 311         const char *stacking;
 312
 313         if (it->level != level) continue;
 314
 315         if(i > wd->max_supp_items_count) break;
 316
 317         o = edje_object_add(evas_object_evas_get(obj));
 318         VIEW(it) = o;
 319         edje_object_mirrored_set(VIEW(it), rtl);
 320         if (i & 0x1)
 321           _elm_theme_object_set(obj, o, "index", "item_odd/vertical", elm_widget_style_get(obj));
 322         else
 323           _elm_theme_object_set(obj, o, "index", "item/vertical", elm_widget_style_get(obj));
 324         edje_object_part_text_set(o, "elm.text", it->letter);
 325         edje_object_size_min_restricted_calc(o, &mw, &mh, 0, 0);
 326         evas_object_size_hint_min_set(o, mw, mh);
 327         evas_object_size_hint_weight_set(o, EVAS_HINT_EXPAND, EVAS_HINT_EXPAND);
 328         evas_object_size_hint_align_set(o, EVAS_HINT_FILL, EVAS_HINT_FILL);
 329         edje_object_part_text_set(o, "elm.text", it->vis_letter);
 330         evas_object_size_hint_min_set(o, mw, it->size);
 331         evas_object_size_hint_max_set(o, mw, it->size);
 332         evas_object_resize(o, mw, it->size);
 333         elm_widget_sub_object_add(obj, o);
 334         evas_object_box_append(box, o);
 335         stacking = edje_object_data_get(o, "stacking");
 336         if (stacking)
 337           {
 338              if (!strcmp(stacking, "below")) evas_object_lower(o);
 339              else if (!strcmp(stacking, "above")) evas_object_raise(o);
 340           }
 341         evas_object_show(o);
 342         i++;
 343         if(level == 1)
 344           wd->tot_items_count[1] = i;
 345         evas_object_smart_calculate(box); // force a calc so we know the size
 346         evas_object_size_hint_min_get(box, &mw, &mh);
 347         if (mh > h)
 348           {
 349              _index_box_clear(obj, box, level);
 350              if (i > 0)
 351                {
 352                   // FIXME: only i objects fit! try again. overflows right now
 353                }
 354           }
 355      }
 356    evas_object_smart_calculate(box);
 357    wd->level_active[level] = 1;
 358 }
 359
 360 static void
 361 _index_box_clear(Evas_Object *obj, Evas_Object *box __UNUSED__, int level)
 362 {
 363    Widget_Data *wd = elm_widget_data_get(obj);
 364    Eina_List *l;
 365    Elm_Index_Item *it;
 366    if (!wd) return;
 367    if (!wd->level_active[level]) return;
 368    EINA_LIST_FOREACH(wd->items, l, it)
 369      {
 370         if (!VIEW(it)) continue;
 371         if (it->level != level) continue;
 372         evas_object_del(VIEW(it));
 373         VIEW(it) = NULL;
 374      }
 375    wd->level_active[level] = 0;
 376 }
 377
 378 static Eina_Bool
 379 _delay_change(void *data)
 380 {
 381    Widget_Data *wd = elm_widget_data_get(data);
 382    Elm_Object_Item *item;
 383    int view_level;
 384    if (!wd) return ECORE_CALLBACK_CANCEL;
 385    wd->delay = NULL;
 386    SET_VIEW_LEVEL(wd, view_level);
 387    item = elm_index_item_selected_get(data, view_level);
 388    if (item) evas_object_smart_callback_call(data, SIG_DELAY_CHANGED, item);
 389
 390    return ECORE_CALLBACK_CANCEL;
 391 }
 392
 393 static void
 394 _sel_eval(Evas_Object *obj, Evas_Coord evx, Evas_Coord evy)
 395 {
 396    Widget_Data *wd = elm_widget_data_get(obj);
 397    Elm_Index_Item *it, *it_closest, *it_last;
 398    Eina_List *l;
 399    Evas_Coord x, y, w, h, bx, by, bw, bh, xx, yy;
 400    double cdv = 0.5;
 401    double cdvv = 0.0;
 402    double dmax = 0.0;
 403    double dmin = 0.0;
 404    Evas_Coord dist;
 405    Eina_Bool change = EINA_FALSE;
 406    char *label = NULL, *last = NULL;
 407    int i;
 408    int view_level;
 409    if (!wd) return;
 410
 411    SET_VIEW_LEVEL(wd, view_level);
 412    for (i = 0; i <= view_level; i++)
 413      {
 414         it_last = NULL;
 415         it_closest  = NULL;
 416         dist = 0x7fffffff;
 417         evas_object_geometry_get(wd->bx[i], &bx, &by, &bw, &bh);
 418
 419         dmin = (double)(wd->min_1st_level_obj_height*wd->tot_items_count[1])/(2*(double)bh);
 420         dmax = 1.0-dmin-0.08;
 421         EINA_LIST_FOREACH(wd->items, l, it)
 422           {
 423              if (!((it->level == i) && (VIEW(it)))) continue;
 424              if ((VIEW(it)) && (it->level != wd->level))
 425                {
 426                   if (it->selected)
 427                     {
 428                        it_closest = it;
 429                        break;
 430                     }
 431                   continue;
 432                }
 433              if (it->selected)
 434                {
 435                   it_last = it;
 436                   it->selected = 0;
 437                }
 438              evas_object_geometry_get(VIEW(it), &x, &y, &w, &h);
 439              xx = x + (w / 2);
 440              yy = y + (h / 2);
 441              x = evx - xx;
 442              y = evy - yy;
 443              x = (x * x) + (y * y);
 444              if ((x < dist) || (!it_closest))
 445                {
 446                   if (wd->horizontal)
 447                     cdv = (double)(xx - bx) / (double)bw;
 448                   else
 449                     cdv = (double)(yy - by) / (double)bh;
 450                   it_closest = it;
 451                   dist = x;
 452                }
 453           }
 454           if ((i == 0) && (view_level == 0))
 455             {
 456                if(cdv > dmax || cdv < dmin)
 457                  {
 458                     if(cdv > dmax)
 459                       {
 460                          cdvv = dmax;
 461                       }
 462                     else
 463                       {
 464                          cdvv = dmin;
 465                       }
 466                     edje_object_part_drag_value_set(wd->base, "elm.dragable.index.1", cdv, cdvv);
 467                  }
 468                else
 469                  {
 470                     edje_object_part_drag_value_set(wd->base, "elm.dragable.index.1", cdv, cdv);
 471                  }
 472             }
 473         if (it_closest) it_closest->selected = 1;
 474         if (it_closest != it_last)
 475           {
 476              change = 1;
 477              if (it_last)
 478                {
 479                   const char *stacking, *selectraise;
 480
 481                   it = it_last;
 482                   if(view_level == it->level)
 483                   edje_object_signal_emit(VIEW(it), "elm,state,inactive", "elm");
 484                   stacking = edje_object_data_get(VIEW(it), "stacking");
 485                   selectraise = edje_object_data_get(VIEW(it), "selectraise");
 486                   if ((selectraise) && (!strcmp(selectraise, "on")))
 487                     {
 488                        if ((stacking) && (!strcmp(stacking, "below")))
 489                          evas_object_lower(VIEW(it));
 490                     }
 491                }
 492              if (it_closest)
 493                {
 494                   const char *selectraise;
 495
 496                   it = it_closest;
 497                   if(view_level == it->level)
 498                   edje_object_signal_emit(VIEW(it), "elm,state,active", "elm");
 499                   selectraise = edje_object_data_get(VIEW(it), "selectraise");
 500                   if ((selectraise) && (!strcmp(selectraise, "on")))
 501                     evas_object_raise(VIEW(it));
 502                   evas_object_smart_callback_call((void *)obj, SIG_CHANGED, (void *)it);
 503                   if (wd->delay) ecore_timer_del(wd->delay);
 504                   wd->delay = ecore_timer_add(0.2, _delay_change, obj);
 505                }
 506           }
 507         if (it_closest)
 508           {
 509              it = it_closest;
 510              if (!last)
 511                last = strdup(it->letter);
 512              else
 513                {
 514                   if (!label) label = strdup(last);
 515                   else
 516                     {
 517                        /* FIXME: realloc return NULL if the request fails */
 518                        label = realloc(label, strlen(label) + strlen(last) + 1);
 519                        strcat(label, last);
 520                     }
 521                   free(last);
 522                   last = strdup(it->letter);
 523                }
 524           }
 525      }
 526    if (!label) label = strdup("");
 527    if (!last) last = strdup("");
 528    if(!wd->hide_button)
 529      {
 530         char *popup_text;
 531
 532         if(view_level == 0)
 533           {
 534              if(wd->tot_items_count[0])
 535                {
 536                   if (wd->popup_str[1]) wd->popup_str[1][0] = '\0';
 537                   wd->popup_str[0] = (char *)realloc(wd->popup_str[0], (sizeof(char) * strlen(last) + 1));
 538
 539                   strcpy(wd->popup_str[0], last);
 540                   edje_object_signal_emit(wd->base, "hide_2nd_level", "");
 541                }
 542              else
 543                {
 544                   edje_object_signal_emit(wd->base, "button.image.hidden", "");
 545                   if(label)free(label);
 546                   if(last) free(last);
 547                   return;
 548                }
 549           }
 550         if (view_level == 1 && wd->level_active[1])
 551           {
 552              if(wd->tot_items_count[1])
 553                {
 554                   wd->popup_str[1] = (char *)realloc(wd->popup_str[1], (sizeof(char) * strlen(last) + 1));
 555
 556                   strcpy(wd->popup_str[1], last);
 557                   edje_object_signal_emit(wd->base, "hide_first_level", "");
 558                }
 559              else
 560                {
 561                   edje_object_signal_emit(wd->base, "button.image.hidden", "");
 562                   if(label)free(label);
 563                   if(last) free(last);
 564                   return;
 565                }
 566           }
 567         popup_text = (char *)malloc(sizeof(char) * (strlen(wd->popup_str[0]) + strlen(wd->popup_str[1]) + 1));
 568         sprintf(popup_text, "%s%s", wd->popup_str[0], wd->popup_str[1]);
 569         edje_object_part_text_set(wd->base, "elm.text", popup_text);
 570
 571         free(popup_text);
 572      }
 573
 574    if(label)
 575      free(label);
 576    if(last)
 577      free(last);
 578 }
 579
 580 static void
 581 _wheel(void *data, Evas *e __UNUSED__, Evas_Object *o __UNUSED__, void *event_info __UNUSED__)
 582 {
 583    Widget_Data *wd = elm_widget_data_get(data);
 584    //   Evas_Event_Mouse_Wheel *ev = event_info;
 585    //   Evas_Object *obj = o;
 586    if (!wd) return;
 587 }
 588
 589 static void
 590 _mouse_down(void *data, Evas *e __UNUSED__, Evas_Object *o __UNUSED__, void *event_info)
 591 {
 592    Widget_Data *wd = elm_widget_data_get(data);
 593    Evas_Event_Mouse_Down *ev = event_info;
 594    Evas_Coord x, y, w;
 595    if (!wd) return;
 596    if (ev->button != 1) return;
 597    wd->down = 1;
 598    evas_object_geometry_get(wd->base, &x, &y, &w, NULL);
 599    wd->dx = ev->canvas.x - x;
 600    wd->dy = ev->canvas.y - y;
 601    elm_index_active_set(data, 1);
 602    _sel_eval(data, ev->canvas.x, ev->canvas.y);
 603    edje_object_part_drag_value_set(wd->base, "elm.dragable.pointer",
 604                                    (!edje_object_mirrored_get(wd->base)) ? wd->dx : (wd->dx - w), wd->dy);
 605    if (wd->items)
 606       edje_object_signal_emit(wd->base, "elm,indicator,state,active", "elm");
 607 }
 608
 609 static void
 610 _mouse_up(void *data, Evas *e __UNUSED__, Evas_Object *o __UNUSED__, void *event_info)
 611 {
 612    Widget_Data *wd = elm_widget_data_get(data);
 613    Evas_Event_Mouse_Up *ev = event_info;
 614    Elm_Object_Item *item;
 615    Eina_List *l;
 616    int view_level;
 617
 618    if (!wd) return;
 619    if (ev->button != 1) return;
 620    if (wd->level == 1 && wd->delay) ecore_timer_del(wd->delay);
 621    wd->delay = NULL;
 622    wd->down = 0;
 623    SET_VIEW_LEVEL(wd, view_level);
 624    item = elm_index_item_selected_get(data, view_level);
 625    EINA_LIST_FOREACH(wd->items, l, item)
 626      {
 627         edje_object_signal_emit(item->base.view, "elm,state,inactive", "elm");
 628      }
 629    if (item) evas_object_smart_callback_call(data, SIG_SELECTED, item);
 630    elm_index_active_set(data, 0);
 631    edje_object_signal_emit(wd->base, "elm,state,level,0", "elm");
 632    edje_object_signal_emit(wd->base, "elm,indicator,state,inactive", "elm");
 633 }
 634
 635 static void
 636 _mouse_move(void *data, Evas *e __UNUSED__, Evas_Object *o __UNUSED__, void *event_info)
 637 {
 638    Widget_Data *wd = elm_widget_data_get(data);
 639    Evas_Event_Mouse_Move *ev = event_info;
 640    Evas_Coord minw = 0, minh = 0, x, y, dx, adx, w;
 641    void *d;
 642    Elm_Object_Item *item;
 643    char buf[1024];
 644    if (!wd) return;
 645    if (!wd->down) return;
 646    elm_coords_finger_size_adjust(1, &minw, 1, &minh);
 647    evas_object_geometry_get(wd->base, &x, &y, &w, NULL);
 648    x = ev->cur.canvas.x - x;
 649    y = ev->cur.canvas.y - y;
 650    dx = x - wd->dx;
 651    adx = dx;
 652    if (adx < 0) adx = -dx;
 653    edje_object_part_drag_value_set(wd->base, "elm.dragable.pointer"
 654                                    , (!edje_object_mirrored_get(wd->base)) ? x : (x - w), y);
 655    if (!wd->horizontal)
 656      {
 657         if (adx > minw)
 658           {
 659              if (!wd->level)
 660                {
 661                   wd->level = 1;
 662                   snprintf(buf, sizeof(buf), "elm,state,level,%i", wd->level);
 663                   edje_object_signal_emit(wd->base, buf, "elm");
 664                   evas_object_smart_callback_call(data, SIG_LEVEL_UP, NULL);
 665                }
 666           }
 667         else
 668           {
 669              if (wd->level == 1)
 670                {
 671                   wd->level = 0;
 672                   snprintf(buf, sizeof(buf), "elm,state,level,%i", wd->level);
 673                   edje_object_signal_emit(wd->base, buf, "elm");
 674                   item = elm_index_item_selected_get(data, wd->level);
 675                   evas_object_smart_callback_call(data, "changed", d);
 676                   if (wd->delay) ecore_timer_del(wd->delay);
 677                   wd->delay = ecore_timer_add(0.2, _delay_change, data);
 678                   evas_object_smart_callback_call(data, SIG_LEVEL_DOWN, NULL);
 679                }
 680           }
 681      }
 682    _sel_eval(data, ev->cur.canvas.x, ev->cur.canvas.y);
 683 }
 684
 685 static void
 686 _index_box_refill_job(void *data)
 687 {
 688    Widget_Data *wd = elm_widget_data_get((Evas_Object *)data);
 689    if (!wd) return;
 690
 691    const char *string;
 692    Evas_Coord pw, ph;
 693
 694    evas_object_geometry_get(wd->base, NULL, NULL, &pw, &ph);
 695    wd->scale_factor = elm_scale_get();
 696    if ( wd->scale_factor == 0.0 ) {
 697      wd->scale_factor = 1.0;
 698    }
 699    string = edje_object_data_get(wd->base, "min_obj_height");
 700    if(string)
 701      wd->min_obj_height = (int) (atoi(string))*wd->scale_factor;
 702    else
 703      wd->min_obj_height = MIN_OBJ_HEIGHT*wd->scale_factor;
 704    if(!wd->min_obj_height) return;
 705
 706    wd->max_grp_size = wd->min_obj_height - 2*MIN_GRP_SIZE;
 707    wd->items_count = ph/wd->min_obj_height;
 708    wd->max_supp_items_count = wd->max_grp_size*(int)((wd->items_count-1)*0.5)+wd->items_count;
 709
 710    if(pw != wd->pwidth && ph != wd->pheight)
 711      {
 712         if(wd->down == 1)
 713           {
 714              wd->active = 0;
 715              elm_index_active_set(data, 1);
 716           }
 717         _index_box_clear((Evas_Object *)data, wd->bx[0], 0);
 718         evas_object_smart_calculate( wd->bx[0]);
 719         elm_index_item_go((Evas_Object *)data, wd->level);
 720         wd->pwidth = pw;
 721         wd->pheight = ph;
 722      }
 723 }
 724
 725 static void _index_object_resize(void *data, Evas *e __UNUSED__, Evas_Object *obj __UNUSED__, void *event_info __UNUSED__)
 726 {
 727    Widget_Data *wd;
 728    if(!data) return;
 729    wd = elm_widget_data_get((Evas_Object *)data);
 730    if(!wd) return;
 731    ecore_job_add(_index_box_refill_job, (Evas_Object *)data);
 732 }
 733
 734 EAPI Evas_Object *
 735 elm_index_add(Evas_Object *parent)
 736 {
 737    Evas_Object *obj;
 738    Evas_Object *o;
 739    Evas *e;
 740    Widget_Data *wd;
 741    Evas_Coord minw, minh;
 742    const char *string;
 743
 744    ELM_WIDGET_STANDARD_SETUP(wd, Widget_Data, parent, e, obj, NULL);
 745
 746    ELM_SET_WIDTYPE(widtype, "index");
 747    elm_widget_type_set(obj, "index");
 748    elm_widget_sub_object_add(parent, obj);
 749    elm_widget_data_set(obj, wd);
 750    elm_widget_del_hook_set(obj, _del_hook);
 751    elm_widget_del_pre_hook_set(obj, _del_pre_hook);
 752    elm_widget_theme_hook_set(obj, _theme_hook);
 753    elm_widget_signal_emit_hook_set(obj, _signal_emit_hook);
 754    elm_widget_signal_callback_add_hook_set(obj, _signal_callback_add_hook);
 755    elm_widget_signal_callback_del_hook_set(obj, _signal_callback_del_hook);
 756    elm_widget_can_focus_set(obj, EINA_FALSE);
 757
 758    wd->horizontal = EINA_FALSE;
 759    wd->min_obj_height = 0;
 760    wd->max_grp_size = 0;
 761    wd->items_count = 0;
 762    wd->max_supp_items_count = 0;
 763    wd->tot_items_count[0] = 0;
 764    wd->tot_items_count[1] = 0;
 765    wd->hide_button = 0;
 766    wd->special_char = edje_object_data_get(wd->base, "special_char");
 767    if(wd->special_char == NULL)  wd->special_char = eina_stringshare_add("*");
 768
 769    wd->base = edje_object_add(e);
 770    _elm_theme_object_set(obj, wd->base, "index", "base/vertical", "default");
 771    elm_widget_resize_object_set(obj, wd->base);
 772
 773    o = evas_object_rectangle_add(e);
 774    wd->event[0] = o;
 775    evas_object_color_set(o, 0, 0, 0, 0);
 776    minw = minh = 0;
 777    elm_coords_finger_size_adjust(1, &minw, 1, &minh);
 778    evas_object_size_hint_min_set(o, minw, minh);
 779    edje_object_part_swallow(wd->base, "elm.swallow.event.0", o);
 780    elm_widget_sub_object_add(obj, o);
 781    evas_object_event_callback_add(obj, EVAS_CALLBACK_RESIZE, _index_object_resize, obj);
 782    evas_object_event_callback_add(o, EVAS_CALLBACK_MOUSE_WHEEL, _wheel, obj);
 783    evas_object_event_callback_add(o, EVAS_CALLBACK_MOUSE_DOWN, _mouse_down, obj);
 784    evas_object_event_callback_add(o, EVAS_CALLBACK_MOUSE_UP, _mouse_up, obj);
 785    evas_object_event_callback_add(o, EVAS_CALLBACK_MOUSE_MOVE, _mouse_move, obj);
 786    evas_object_show(o);
 787    if (edje_object_part_exists(wd->base, "elm.swallow.event.1"))
 788      {
 789         o = evas_object_rectangle_add(e);
 790         wd->event[1] = o;
 791         evas_object_color_set(o, 0, 0, 0, 0);
 792         evas_object_size_hint_min_set(o, minw, minh);
 793         edje_object_part_swallow(wd->base, "elm.swallow.event.1", o);
 794         elm_widget_sub_object_add(obj, o);
 795      }
 796
 797    wd->bx[0] = evas_object_box_add(e);
 798    evas_object_box_layout_set(wd->bx[0], _layout, wd, NULL);
 799    elm_widget_sub_object_add(obj, wd->bx[0]);
 800    edje_object_part_swallow(wd->base, "elm.swallow.index.0", wd->bx[0]);
 801    evas_object_show(wd->bx[0]);
 802
 803    if (edje_object_part_exists(wd->base, "elm.swallow.index.1"))
 804      {
 805         wd->bx[1] = evas_object_box_add(e);
 806         evas_object_box_layout_set(wd->bx[1], _layout, wd, NULL);
 807         elm_widget_sub_object_add(obj, wd->bx[1]);
 808         edje_object_part_swallow(wd->base, "elm.swallow.index.1", wd->bx[1]);
 809         evas_object_show(wd->bx[1]);
 810      }
 811
 812    evas_object_smart_callbacks_descriptions_set(obj, _signals);
 813    wd->scale_factor = elm_scale_get();
 814    if ( wd->scale_factor == 0.0 )
 815                 wd->scale_factor = 1.0;
 816    string = edje_object_data_get(wd->base, "min_1st_level_obj_height");
 817    if(string)
 818      wd->min_1st_level_obj_height = (int) (atoi(string))*wd->scale_factor;
 819    else
 820      wd->min_1st_level_obj_height = MIN_OBJ_HEIGHT*wd->scale_factor;
 821    wd->popup_str[0] = calloc(1, sizeof(char) * 1);
 822    wd->popup_str[1] = calloc(1, sizeof(char) * 1);
 823
 824    _mirrored_set(obj, elm_widget_mirrored_get(obj));
 825    _sizing_eval(obj);
 826    return obj;
 827 }
 828
 829 static int
 830 _group_count(Evas_Object *obj, int extraIndex, int adj_pos, int vis_pos)
 831 {
 832    Widget_Data *wd = elm_widget_data_get(obj);
 833    if (!wd) return 0;
 834    int group_count = MIN_GRP_SIZE;
 835    while(group_count <= wd->max_grp_size)
 836      {
 837         if(extraIndex <= wd->max_grp_size*adj_pos)
 838           {
 839              if(group_count*adj_pos>=extraIndex) return group_count;
 840           }
 841         else
 842           return wd->max_grp_size;
 843
 844         group_count += MIN_GRP_SIZE;
 845      }
 846    return group_count;
 847 }
 848
 849 static void
 850 _index_process(Evas_Object *obj)
 851 {
 852    int extraIndex;
 853    int j,i, group_count;
 854    Eina_List *l;
 855    Elm_Index_Item *it;
 856    int count;
 857    int n;
 858
 859    Widget_Data *wd = elm_widget_data_get(obj);
 860    if (!wd) return;
 861
 862    if (wd->items_count == 0) return;
 863
 864    const int adj_pos = (wd->items_count-1)*0.5;
 865    if(wd->tot_items_count[wd->level] <= wd->max_supp_items_count)
 866       n = wd->tot_items_count[wd->level];
 867    else
 868       n = wd->max_supp_items_count;
 869    group_count = MIN_GRP_SIZE;
 870
 871    int *indx = (int*)calloc(n, sizeof(int));
 872    if (!indx) return;
 873
 874    const int minh = wd->min_obj_height;
 875    EINA_LIST_FOREACH(wd->items, l, it)
 876      {
 877         it->vis_letter = eina_stringshare_add(it->letter);
 878         it->size =  minh;
 879      }
 880    int remainder;
 881    int numberofparts;
 882    int N = wd->items_count;
 883
 884    for (i=0;i<n;i++)
 885      {
 886         indx[i] = minh;
 887      }
 888    extraIndex=n-N;
 889    if (extraIndex < 0)
 890      {
 891         free(indx);
 892         indx = NULL;
 893         return;
 894      }
 895
 896    group_count = _group_count(obj, extraIndex, adj_pos, N);
 897    if (group_count <= 0)
 898      {
 899         if (indx)
 900           free(indx);
 901         indx = NULL;
 902         return;
 903      }
 904
 905    PlacementPart place[adj_pos];
 906    remainder = extraIndex%group_count;
 907    numberofparts=(extraIndex/group_count)+(remainder == 0? 0: 1);
 908
 909    for (i=0;i<numberofparts; i++)
 910      {
 911         place[i].count=group_count+1;
 912         count = (int)(((float)(i+1)/(float)(numberofparts+1))*N);
 913         place[i].start= count +i*group_count-1;
 914      }
 915    if (remainder)
 916      place[numberofparts-1].count=remainder+1;
 917
 918    for (i=0;i<numberofparts;i++)
 919      {
 920         for (j=0;j<place[i].count; j++)
 921           {
 922              indx[((place[i].start)+j)]= MIN_PIXEL_VALUE;
 923           }
 924         indx[(place[i].start+(place[i].count)/2)] = minh-place[i].count+1;
 925      }
 926    count = 0;
 927    EINA_LIST_FOREACH(wd->items, l, it)
 928      {
 929         int size = indx[count];
 930         count++;
 931         if (size == minh)
 932           {
 933              it->vis_letter = eina_stringshare_add(it->letter);
 934              continue;
 935           }
 936         else if (size == 1)
 937           {
 938              eina_stringshare_del(it->vis_letter);
 939              it->vis_letter = eina_stringshare_add("");
 940           }
 941         else
 942           {
 943              eina_stringshare_del(it->vis_letter);
 944              it->vis_letter = eina_stringshare_add(wd->special_char);
 945           }
 946         it->size = size*wd->scale_factor;
 947      }
 948    if (indx)
 949      {
 950         free(indx);
 951         indx = NULL;
 952      }
 953 }
 954
 955 EAPI void
 956 elm_index_active_set(Evas_Object *obj, Eina_Bool active)
 957 {
 958    ELM_CHECK_WIDTYPE(obj, widtype);
 959    Widget_Data *wd = elm_widget_data_get(obj);
 960    if (!wd) return;
 961    if (wd->active == active) return;
 962    wd->active = active;
 963    wd->level = 0;
 964    if (wd->active)
 965      {
 966         _index_box_clear(obj, wd->bx[1], 1);
 967         _index_process(obj);
 968         _index_box_auto_fill(obj, wd->bx[0], 0);
 969         if(wd->tot_items_count[wd->level])
 970           edje_object_signal_emit(wd->base, "elm,state,active", "elm");
 971         else
 972           edje_object_signal_emit(wd->base, "button.image.hidden", "");
 973      }
 974    else
 975      edje_object_signal_emit(wd->base, "elm,state,inactive", "elm");
 976 }
 977
 978 EAPI Eina_Bool
 979 elm_index_active_get(const Evas_Object *obj)
 980 {
 981    ELM_CHECK_WIDTYPE(obj, widtype) EINA_FALSE;
 982    Widget_Data *wd = elm_widget_data_get(obj);
 983    if (!wd) return EINA_FALSE;
 984    return wd->active;
 985 }
 986
 987 EAPI void
 988 elm_index_item_level_set(Evas_Object *obj, int level)
 989 {
 990    ELM_CHECK_WIDTYPE(obj, widtype);
 991    Widget_Data *wd = elm_widget_data_get(obj);
 992    if (!wd) return;
 993    if (wd->level == level) return;
 994    wd->level = level;
 995 }
 996
 997 EAPI int
 998 elm_index_item_level_get(const Evas_Object *obj)
 999 {
1000    ELM_CHECK_WIDTYPE(obj, widtype) 0;
1001    Widget_Data *wd = elm_widget_data_get(obj);
1002    if (!wd) return 0;
1003    return wd->level;
1004 }
1005
1006 EAPI Elm_Object_Item *
1007 elm_index_item_selected_get(const Evas_Object *obj, int level)
1008 {
1009    ELM_CHECK_WIDTYPE(obj, widtype) NULL;
1010    Widget_Data *wd = elm_widget_data_get(obj);
1011    Eina_List *l;
1012    Elm_Index_Item *it;
1013    if (!wd) return NULL;
1014    EINA_LIST_FOREACH(wd->items, l, it)
1015      {
1016         if ((it->selected) && (it->level == level))
1017           return (Elm_Object_Item *) it;
1018      }
1019    return NULL;
1020 }
1021
1022 EAPI void
1023 elm_index_item_append(Evas_Object *obj, const char *letter, const void *item)
1024 {
1025    ELM_CHECK_WIDTYPE(obj, widtype);
1026    Widget_Data *wd = elm_widget_data_get(obj);
1027    Elm_Index_Item *it;
1028    if (!wd) return;
1029    it = _item_new(obj, letter, item);
1030    if (!it) return;
1031    wd->items = eina_list_append(wd->items, it);
1032    wd->tot_items_count[wd->level]++;
1033    _index_box_clear(obj, wd->bx[wd->level], wd->level);
1034 }
1035
1036 EAPI void
1037 elm_index_item_prepend(Evas_Object *obj, const char *letter, const void *item)
1038 {
1039    ELM_CHECK_WIDTYPE(obj, widtype);
1040    Widget_Data *wd = elm_widget_data_get(obj);
1041    Elm_Index_Item *it;
1042
1043    if (!wd) return;
1044    it = _item_new(obj, letter, item);
1045    if (!it) return;
1046    wd->items = eina_list_prepend(wd->items, it);
1047    wd->tot_items_count[wd->level]++;
1048    _index_box_clear(obj, wd->bx[wd->level], wd->level);
1049 }
1050
1051 EAPI void
1052 elm_index_item_append_relative(Evas_Object *obj, const char *letter, const void *item, const Elm_Object_Item *relative)
1053 {
1054    ELM_CHECK_WIDTYPE(obj, widtype);
1055    Widget_Data *wd = elm_widget_data_get(obj);
1056    Elm_Index_Item *it;
1057    if (!wd) return;
1058    if (!relative)
1059      {
1060         elm_index_item_append(obj, letter, item);
1061         wd->tot_items_count[wd->level]++;
1062         return;
1063      }
1064    it = _item_new(obj, letter, item);
1065    if (!it) return;
1066    wd->items = eina_list_append_relative(wd->items, it, relative);
1067    wd->tot_items_count[wd->level]++;
1068    _index_box_clear(obj, wd->bx[wd->level], wd->level);
1069 }
1070
1071 EAPI void
1072 elm_index_item_prepend_relative(Evas_Object *obj, const char *letter, const void *item, const Elm_Object_Item *relative)
1073 {
1074    ELM_CHECK_WIDTYPE(obj, widtype);
1075    Widget_Data *wd = elm_widget_data_get(obj);
1076    Elm_Index_Item *it;
1077    if (!wd) return;
1078    if (!relative)
1079      {
1080         elm_index_item_prepend(obj, letter, item);
1081         wd->tot_items_count[wd->level]++;
1082         return;
1083      }
1084    it = _item_new(obj, letter, item);
1085    if (!it) return;
1086
1087    wd->items = eina_list_prepend_relative(wd->items, it, relative);
1088    wd->tot_items_count[wd->level]++;
1089    _index_box_clear(obj, wd->bx[wd->level], wd->level);
1090 }
1091
1092 EAPI void
1093 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)
1094 {
1095    ELM_CHECK_WIDTYPE(obj, widtype);
1096    Widget_Data *wd = elm_widget_data_get(obj);
1097    Eina_List *lnear;
1098    Elm_Index_Item *it;
1099    int cmp;
1100
1101    if (!wd) return;
1102    if (!(wd->items))
1103      {
1104         elm_index_item_append(obj, letter, item);
1105         return;
1106      }
1107
1108    it = _item_new(obj, letter, item);
1109    if (!it) return;
1110
1111    lnear = eina_list_search_sorted_near_list(wd->items, cmp_func, it, &cmp);
1112    if (cmp < 0)
1113      wd->items =  eina_list_append_relative_list(wd->items, it, lnear);
1114    else if (cmp > 0)
1115      wd->items = eina_list_prepend_relative_list(wd->items, it, lnear);
1116    else
1117      {
1118         /* If cmp_data_func is not provided, append a duplicated item */
1119         if (!cmp_data_func)
1120           wd->items =  eina_list_append_relative_list(wd->items, it, lnear);
1121         else
1122           {
1123              Elm_Index_Item *p_it = eina_list_data_get(lnear);
1124              if (cmp_data_func(p_it->base.data, it->base.data) >= 0)
1125                p_it->base.data = it->base.data;
1126              elm_widget_item_free(it);
1127           }
1128      }
1129
1130    _index_box_clear(obj, wd->bx[wd->level], wd->level);
1131 }
1132
1133 EAPI void
1134 elm_index_item_del(Evas_Object *obj __UNUSED__, Elm_Object_Item *it)
1135 {
1136    elm_object_item_del(it);
1137 }
1138
1139 EAPI Elm_Object_Item *
1140 elm_index_item_find(Evas_Object *obj, const void *item)
1141 {
1142    ELM_CHECK_WIDTYPE(obj, widtype) NULL;
1143    Widget_Data *wd = elm_widget_data_get(obj);
1144    if (!wd) return NULL;
1145
1146    return (Elm_Object_Item *) _item_find(obj, item);
1147 }
1148
1149 EAPI void
1150 elm_index_item_clear(Evas_Object *obj)
1151 {
1152    ELM_CHECK_WIDTYPE(obj, widtype);
1153    Widget_Data *wd = elm_widget_data_get(obj);
1154    Elm_Index_Item *it;
1155    Eina_List *l, *clear = NULL;
1156    if (!wd) return;
1157    _index_box_clear(obj, wd->bx[wd->level], wd->level);
1158    EINA_LIST_FOREACH(wd->items, l, it)
1159      {
1160         if (it->level != wd->level) continue;
1161         clear = eina_list_append(clear, it);
1162      }
1163    EINA_LIST_FREE(clear, it)
1164      {
1165         wd->tot_items_count[wd->level]--;
1166         elm_widget_item_del(it);
1167      }
1168 }
1169
1170 EAPI void
1171 elm_index_item_go(Evas_Object *obj, int level)
1172 {
1173    ELM_CHECK_WIDTYPE(obj, widtype);
1174    Widget_Data *wd = elm_widget_data_get(obj);
1175    if (!wd) return;
1176    if(level == 0)
1177      _index_process(obj);
1178    _index_box_auto_fill(obj, wd->bx[0], 0);
1179    if (wd->level == 1) _index_box_auto_fill(obj, wd->bx[1], 1);
1180 }
1181
1182 EAPI void *
1183 elm_index_item_data_get(const Elm_Object_Item *it)
1184 {
1185    return elm_object_item_data_get(it);
1186 }
1187
1188 EAPI void
1189 elm_index_button_image_invisible_set(Evas_Object *obj, Eina_Bool invisible)
1190 {
1191    ELM_CHECK_WIDTYPE(obj, widtype);
1192    Widget_Data *wd = elm_widget_data_get(obj);
1193    wd->hide_button = invisible;
1194
1195    edje_object_signal_emit(wd->base, "elm,state,button,image,hide", "elm");
1196    return;
1197 }
1198
1199 EAPI void
1200 elm_index_item_data_set(Elm_Object_Item *it, const void *data)
1201 {
1202    elm_object_item_data_set(it, (void *) data);
1203 }
1204
1205 EAPI void
1206 elm_index_item_del_cb_set(Elm_Object_Item *it, Evas_Smart_Cb func)
1207 {
1208    elm_object_item_del_cb_set(it, func);
1209 }
1210
1211 EAPI const char *
1212 elm_index_item_letter_get(const Elm_Object_Item *it)
1213 {
1214    ELM_OBJ_ITEM_CHECK_OR_RETURN(it, NULL);
1215    return ((Elm_Index_Item *) it)->letter;
1216 }
1217