mobile/src/examples/genlist_example_05.c

   1 //Compile with:
   2 //gcc -g genlist_example_05.c -o genlist_example_05 `pkg-config --cflags --libs elementary`
   3
   4 #include <Elementary.h>
   5
   6 #define N_ITEMS 6
   7
   8 typedef struct _Node_Data {
   9      Eina_List *children;
  10      int value;
  11      int level;
  12      Eina_Bool favorite;
  13 } Node_Data;
  14
  15 static Elm_Genlist_Item_Class *_itc = NULL;
  16 static Elm_Genlist_Item_Class *_itp = NULL;
  17 static Elm_Genlist_Item_Class *_itfav = NULL;
  18 static int nitems = 0;
  19
  20 static char *
  21 _item_label_get(void *data, Evas_Object *obj, const char *part)
  22 {
  23    char buf[256];
  24    Node_Data *d = data;
  25
  26    if (!strcmp(part, "elm.text"))
  27      snprintf(buf, sizeof(buf), "Item # %i (level %i)", d->value, d->level);
  28
  29    return strdup(buf);
  30 }
  31
  32 static Evas_Object *
  33 _item_content_get(void *data, Evas_Object *obj, const char *part)
  34 {
  35    Evas_Object *ic = elm_icon_add(obj);
  36
  37    if (!strcmp(part, "elm.swallow.icon"))
  38      elm_icon_standard_set(ic, "file");
  39
  40    evas_object_size_hint_aspect_set(ic, EVAS_ASPECT_CONTROL_VERTICAL, 1, 1);
  41    return ic;
  42 }
  43
  44 static void
  45 _item_sel_cb(void *data, Evas_Object *obj, void *event_info)
  46 {
  47    printf("sel item data [%p] on genlist obj [%p], item pointer [%p]\n",
  48           data, obj, event_info);
  49 }
  50
  51 static char *
  52 _parent_label_get(void *data, Evas_Object *obj, const char *part)
  53 {
  54    char buf[256];
  55    Node_Data *d = data;
  56
  57    snprintf(buf, sizeof(buf), "Group %d (%d items)", d->value / 7,
  58             eina_list_count(d->children));
  59
  60    return strdup(buf);
  61 }
  62
  63 static Evas_Object *
  64 _parent_content_get(void *data, Evas_Object *obj, const char *part)
  65 {
  66    Evas_Object *ic = elm_icon_add(obj);
  67
  68    if (!strcmp(part, "elm.swallow.icon"))
  69      elm_icon_standard_set(ic, "folder");
  70
  71    evas_object_size_hint_aspect_set(ic, EVAS_ASPECT_CONTROL_VERTICAL, 1, 1);
  72    return ic;
  73 }
  74
  75 static char *
  76 _favorite_label_get(void *data, Evas_Object *obj, const char *part)
  77 {
  78    char buf[256];
  79    Node_Data *d = data;
  80
  81    if (!strcmp(part, "elm.text"))
  82      snprintf(buf, sizeof(buf), "Favorite # %i", d->value);
  83
  84    return strdup(buf);
  85 }
  86
  87 static Evas_Object *
  88 _favorite_content_get(void *data, Evas_Object *obj, const char *part)
  89 {
  90    Evas_Object *ic = elm_icon_add(obj);
  91
  92    if (!strcmp(part, "elm.swallow.icon"))
  93      elm_icon_standard_set(ic, "apps");
  94
  95    evas_object_size_hint_aspect_set(ic, EVAS_ASPECT_CONTROL_VERTICAL, 1, 1);
  96    return ic;
  97 }
  98
  99 static void
 100 _append_cb(void *data, Evas_Object *o, void *event_info)
 101 {
 102    Evas_Object *list = data;
 103    Elm_Object_Item *glit, *parent = NULL;
 104    Node_Data *pdata, *d = malloc(sizeof(*d));
 105
 106    d->children = NULL;
 107    d->value = nitems++;
 108    d->favorite = EINA_FALSE;
 109
 110    glit = elm_genlist_selected_item_get(list);
 111    if (glit)
 112      parent = elm_genlist_item_parent_get(glit);
 113
 114    if (parent)
 115      {
 116         d->level = elm_genlist_item_expanded_depth_get(parent) + 1;
 117         pdata = elm_object_item_data_get(parent);
 118         pdata->children = eina_list_append(pdata->children, d);
 119      }
 120    else
 121      d->level = 0;
 122
 123    elm_genlist_item_append(list, _itc,
 124                            d, parent,
 125                            ELM_GENLIST_ITEM_NONE,
 126                            _item_sel_cb, NULL);
 127 }
 128
 129 static void
 130 _favorite_cb(void *data, Evas_Object *o, void *event_info)
 131 {
 132    Evas_Object *list = data;
 133    Elm_Object_Item *glit = elm_genlist_selected_item_get(list);
 134
 135    if (!glit) return;
 136
 137    Node_Data *d = elm_object_item_data_get(glit);
 138    d->favorite = !d->favorite;
 139    if (d->favorite)
 140      elm_genlist_item_item_class_update(glit, _itfav);
 141    else
 142      {
 143         if (d->children)
 144           elm_genlist_item_item_class_update(glit, _itp);
 145         else
 146           elm_genlist_item_item_class_update(glit, _itc);
 147      }
 148
 149    elm_genlist_item_update(glit);
 150 }
 151
 152 static void
 153 _add_child_cb(void *data, Evas_Object *o, void *event_info)
 154 {
 155    Evas_Object *list = data;
 156    Elm_Object_Item *glit = elm_genlist_selected_item_get(list);
 157    Elm_Object_Item *glit_prev, *glit_parent;
 158
 159    if (!glit) return;
 160
 161    Node_Data *d = elm_object_item_data_get(glit);
 162    glit_prev = elm_genlist_item_prev_get(glit);
 163    glit_parent = elm_genlist_item_parent_get(glit);
 164
 165    Eina_Bool change_item = !d->children;
 166
 167    // creating new item data
 168    Node_Data *ndata = malloc(sizeof(*ndata));
 169    ndata->value = nitems++;
 170    ndata->children = NULL;
 171    ndata->favorite = EINA_FALSE;
 172    ndata->level = elm_genlist_item_expanded_depth_get(glit) + 1;
 173    d->children = eina_list_append(d->children, ndata);
 174
 175    // Changing leaf item to parent item
 176    if (change_item)
 177      {
 178         elm_object_item_del(glit);
 179
 180         if (glit_prev != glit_parent)
 181           glit = elm_genlist_item_insert_after(list, _itp, d, glit_parent,
 182                                                glit_prev,
 183                                                ELM_GENLIST_ITEM_TREE,
 184                                                _item_sel_cb, NULL);
 185         else
 186           glit = elm_genlist_item_prepend(list, _itp, d, glit_parent,
 187                                           ELM_GENLIST_ITEM_TREE,
 188                                           _item_sel_cb, NULL);
 189         elm_genlist_item_expanded_set(glit, EINA_FALSE);
 190         elm_genlist_item_selected_set(glit, EINA_TRUE);
 191      }
 192    else if (elm_genlist_item_expanded_get(glit))
 193      {
 194         elm_genlist_item_append(list, _itc, ndata, glit,
 195                                 ELM_GENLIST_ITEM_NONE, _item_sel_cb, NULL);
 196      }
 197
 198    elm_genlist_item_update(glit);
 199
 200 }
 201
 202 static void
 203 _clear_list(Node_Data *d)
 204 {
 205    Node_Data *tmp;
 206
 207    EINA_LIST_FREE(d->children, tmp)
 208       _clear_list(tmp);
 209    free(d);
 210 }
 211
 212 static void
 213 _del_item_cb(void *data, Evas_Object *o, void *event_info)
 214 {
 215    Evas_Object *list = data;
 216    Elm_Object_Item *glit = elm_genlist_selected_item_get(list);
 217    Elm_Object_Item *glit_parent = NULL;
 218
 219    if (!glit) return;
 220
 221    Node_Data *pdata, *d = elm_object_item_data_get(glit);
 222    glit_parent = elm_genlist_item_parent_get(glit);
 223    elm_genlist_item_subitems_clear(glit);
 224    elm_object_item_del(glit);
 225
 226    _clear_list(d);
 227
 228    if (!glit_parent) return;
 229
 230    pdata = elm_object_item_data_get(glit_parent);
 231    pdata->children = eina_list_remove(pdata->children, d);
 232    elm_genlist_item_update(glit_parent);
 233 }
 234
 235 static void
 236 _expand_request_cb(void *data, Evas_Object *o, void *event_info)
 237 {
 238    Elm_Object_Item *glit = event_info;
 239    printf("expand request on item: %p\n", event_info);
 240    elm_genlist_item_expanded_set(glit, EINA_TRUE);
 241 }
 242
 243 static void
 244 _contract_request_cb(void *data, Evas_Object *o, void *event_info)
 245 {
 246    Elm_Object_Item *glit = event_info;
 247    printf("contract request on item: %p\n", event_info);
 248    elm_genlist_item_expanded_set(glit, EINA_FALSE);
 249 }
 250
 251 static void
 252 _expanded_cb(void *data, Evas_Object *o, void *event_info)
 253 {
 254    Eina_List *l;
 255    Elm_Object_Item *glit = event_info;
 256    Node_Data *it_data, *d = elm_object_item_data_get(glit);
 257    Evas_Object *list = elm_object_item_widget_get(glit);
 258
 259    Elm_Genlist_Item_Class *ic;
 260
 261    EINA_LIST_FOREACH(d->children, l, it_data)
 262      {
 263         Elm_Object_Item *nitem;
 264         Elm_Genlist_Item_Type type = ELM_GENLIST_ITEM_NONE;
 265         printf("expanding item: #%d from parent #%d\n", it_data->value, d->value);
 266         if (it_data->favorite)
 267           ic = _itfav;
 268         else if (it_data->children)
 269           {
 270              ic = _itp;
 271              type = ELM_GENLIST_ITEM_TREE;
 272           }
 273         else
 274           ic = _itc;
 275
 276         nitem = elm_genlist_item_append(list, ic, it_data, glit,
 277                                         type, _item_sel_cb, NULL);
 278         elm_genlist_item_expanded_set(nitem, EINA_FALSE);
 279      }
 280 }
 281
 282 static void
 283 _contracted_cb(void *data, Evas_Object *o, void *event_info)
 284 {
 285    Elm_Object_Item *glit = event_info;
 286    elm_genlist_item_subitems_clear(glit);
 287 }
 288
 289 static Evas_Object *
 290 _button_add(Evas_Object *list, Evas_Object *box, const char *label, Evas_Smart_Cb cb)
 291 {
 292    Evas_Object *bt;
 293
 294    bt = elm_button_add(elm_object_parent_widget_get(list));
 295    elm_object_text_set(bt, label);
 296    elm_box_pack_end(box, bt);
 297    evas_object_show(bt);
 298
 299    if (cb)
 300      evas_object_smart_callback_add(bt, "clicked", cb, list);
 301
 302    return bt;
 303 }
 304
 305 EAPI_MAIN int
 306 elm_main(int argc, char **argv)
 307 {
 308    Evas_Object *win, *bg, *box, *fbox;
 309    Evas_Object *list;
 310    int i;
 311
 312    win = elm_win_add(NULL, "icon", ELM_WIN_BASIC);
 313    elm_win_title_set(win, "Icon");
 314    elm_policy_set(ELM_POLICY_QUIT, ELM_POLICY_QUIT_LAST_WINDOW_CLOSED);
 315    elm_win_autodel_set(win, EINA_TRUE);
 316
 317    bg = elm_bg_add(win);
 318    elm_bg_color_set(bg, 255,255 ,255);
 319    evas_object_size_hint_weight_set(bg, EVAS_HINT_EXPAND, EVAS_HINT_EXPAND);
 320    elm_win_resize_object_add(win, bg);
 321    evas_object_show(bg);
 322
 323    box = elm_box_add(win);
 324    evas_object_size_hint_weight_set(box, EVAS_HINT_EXPAND, EVAS_HINT_EXPAND);
 325    evas_object_size_hint_align_set(box, EVAS_HINT_FILL, EVAS_HINT_FILL);
 326    elm_win_resize_object_add(win, box);
 327    evas_object_show(box);
 328
 329    if (!_itc)
 330      {
 331         _itc = elm_genlist_item_class_new();
 332         _itc->item_style = "default";
 333         _itc->func.text_get = _item_label_get;
 334         _itc->func.content_get = _item_content_get;
 335         _itc->func.state_get = NULL;
 336         _itc->func.del = NULL;
 337      }
 338
 339    if (!_itp)
 340      {
 341         _itp = elm_genlist_item_class_new();
 342         _itp->item_style = "default";
 343         _itp->func.text_get = _parent_label_get;
 344         _itp->func.content_get = _parent_content_get;
 345         _itp->func.state_get = NULL;
 346         _itp->func.del = NULL;
 347      }
 348
 349    if (!_itfav)
 350      {
 351         _itfav = elm_genlist_item_class_new();
 352         _itfav->item_style = "default";
 353         _itfav->func.text_get = _favorite_label_get;
 354         _itfav->func.content_get = _favorite_content_get;
 355         _itfav->func.state_get = NULL;
 356         _itfav->func.del = NULL;
 357      }
 358
 359    list = elm_genlist_add(win);
 360
 361    evas_object_size_hint_weight_set(list, EVAS_HINT_EXPAND, EVAS_HINT_EXPAND);
 362    evas_object_size_hint_align_set(list, EVAS_HINT_FILL, EVAS_HINT_FILL);
 363    elm_box_pack_end(box, list);
 364    evas_object_show(list);
 365
 366    fbox = elm_box_add(win);
 367    elm_box_layout_set(fbox, evas_object_box_layout_flow_horizontal,
 368                       NULL, NULL);
 369    evas_object_size_hint_weight_set(fbox, EVAS_HINT_EXPAND, 0);
 370    evas_object_size_hint_align_set(fbox, EVAS_HINT_FILL, EVAS_HINT_FILL);
 371    elm_box_pack_end(box, fbox);
 372    evas_object_show(fbox);
 373
 374    _button_add(list, fbox, "append item", _append_cb);
 375    _button_add(list, fbox, "favorite", _favorite_cb);
 376    _button_add(list, fbox, "add child", _add_child_cb);
 377    _button_add(list, fbox, "del item", _del_item_cb);
 378
 379    for (i = 0; i < N_ITEMS; i++)
 380      {
 381         Elm_Object_Item *gli, *glg;
 382         Node_Data *data = malloc(sizeof(*data)); // data for this item
 383         data->children = NULL;
 384         data->value = i;
 385         data->favorite = EINA_FALSE;
 386         nitems++;
 387
 388         Node_Data *pdata; // data for the parent of the group
 389
 390         printf("creating item: #%d\n", data->value);
 391         if (i % 3 == 0)
 392           {
 393              glg = gli = elm_genlist_item_append(list, _itp, data, NULL,
 394                                                  ELM_GENLIST_ITEM_TREE,
 395                                                  _item_sel_cb, NULL);
 396              elm_genlist_item_expanded_set(glg, EINA_TRUE);
 397              pdata = data;
 398              data->level = 0;
 399           }
 400         else
 401           {
 402              gli = elm_genlist_item_append(list, _itc, data, glg,
 403                                            ELM_GENLIST_ITEM_NONE,
 404                                            _item_sel_cb, NULL);
 405              pdata->children = eina_list_append(pdata->children, data);
 406              data->level = 1;
 407           }
 408      }
 409
 410    evas_object_smart_callback_add(list, "expand,request", _expand_request_cb, list);
 411    evas_object_smart_callback_add(list, "contract,request", _contract_request_cb, list);
 412    evas_object_smart_callback_add(list, "expanded", _expanded_cb, list);
 413    evas_object_smart_callback_add(list, "contracted", _contracted_cb, list);
 414
 415    evas_object_resize(win, 420, 600);
 416    evas_object_show(win);
 417
 418    elm_run();
 419    elm_shutdown();
 420
 421    return 0;
 422 }
 423 ELM_MAIN()