src/examples/genlist_example_05.c

   1 //Compile with:
   2 //gcc -g `pkg-config --cflags --libs elementary` genlist_example_04.c -o genlist_example_04
   3
   4 #include <Elementary.h>
   5 #ifdef HAVE_CONFIG_H
   6 # include "elementary_config.h"
   7 #else
   8 # define __UNUSED__
   9 #endif
  10
  11 #define N_ITEMS 6
  12
  13 typedef struct _Node_Data {
  14      Eina_List *children;
  15      int value;
  16      int level;
  17      Eina_Bool favorite;
  18 } Node_Data;
  19
  20 static Elm_Genlist_Item_Class *_itc = NULL;
  21 static Elm_Genlist_Item_Class *_itp = NULL;
  22 static Elm_Genlist_Item_Class *_itfav = NULL;
  23 static int nitems = 0;
  24
  25 static char *
  26 _item_label_get(void *data, Evas_Object *obj __UNUSED__, const char *part)
  27 {
  28    char buf[256];
  29    Node_Data *d = data;
  30
  31    if (!strcmp(part, "elm.text"))
  32      snprintf(buf, sizeof(buf), "Item # %i (level %i)", d->value, d->level);
  33
  34    return strdup(buf);
  35 }
  36
  37 static Evas_Object *
  38 _item_content_get(void *data __UNUSED__, Evas_Object *obj, const char *part)
  39 {
  40    Evas_Object *ic = elm_icon_add(obj);
  41
  42    if (!strcmp(part, "elm.swallow.icon"))
  43      elm_icon_standard_set(ic, "file");
  44
  45    evas_object_size_hint_aspect_set(ic, EVAS_ASPECT_CONTROL_VERTICAL, 1, 1);
  46    return ic;
  47 }
  48
  49 static void
  50 _item_sel_cb(void *data, Evas_Object *obj, void *event_info)
  51 {
  52    printf("sel item data [%p] on genlist obj [%p], item pointer [%p]\n",
  53           data, obj, event_info);
  54 }
  55
  56 static char *
  57 _parent_label_get(void *data, Evas_Object *obj __UNUSED__, const char *part __UNUSED__)
  58 {
  59    char buf[256];
  60    Node_Data *d = data;
  61
  62    snprintf(buf, sizeof(buf), "Group %d (%d items)", d->value / 7,
  63             eina_list_count(d->children));
  64
  65    return strdup(buf);
  66 }
  67
  68 static Evas_Object *
  69 _parent_content_get(void *data __UNUSED__, Evas_Object *obj, const char *part __UNUSED__)
  70 {
  71    Evas_Object *ic = elm_icon_add(obj);
  72
  73    if (!strcmp(part, "elm.swallow.icon"))
  74      elm_icon_standard_set(ic, "folder");
  75
  76    evas_object_size_hint_aspect_set(ic, EVAS_ASPECT_CONTROL_VERTICAL, 1, 1);
  77    return ic;
  78 }
  79
  80 static char *
  81 _favorite_label_get(void *data, Evas_Object *obj __UNUSED__, const char *part)
  82 {
  83    char buf[256];
  84    Node_Data *d = data;
  85
  86    if (!strcmp(part, "elm.text"))
  87      snprintf(buf, sizeof(buf), "Favorite # %i", d->value);
  88
  89    return strdup(buf);
  90 }
  91
  92 static Evas_Object *
  93 _favorite_content_get(void *data __UNUSED__, Evas_Object *obj, const char *part)
  94 {
  95    Evas_Object *ic = elm_icon_add(obj);
  96
  97    if (!strcmp(part, "elm.swallow.icon"))
  98      elm_icon_standard_set(ic, "apps");
  99
 100    evas_object_size_hint_aspect_set(ic, EVAS_ASPECT_CONTROL_VERTICAL, 1, 1);
 101    return ic;
 102 }
 103
 104 static void
 105 _append_cb(void *data, Evas_Object *o __UNUSED__, void *event_info __UNUSED__)
 106 {
 107    Evas_Object *list = data;
 108    Elm_Object_Item *glit, *parent = NULL;
 109    Node_Data *pdata, *d = malloc(sizeof(*d));
 110
 111    d->children = NULL;
 112    d->value = nitems++;
 113    d->favorite = EINA_FALSE;
 114
 115    glit = elm_genlist_selected_item_get(list);
 116    if (glit)
 117      parent = elm_genlist_item_parent_get(glit);
 118
 119    if (parent)
 120      {
 121         d->level = elm_genlist_item_expanded_depth_get(parent) + 1;
 122         pdata = elm_object_item_data_get(parent);
 123         pdata->children = eina_list_append(pdata->children, d);
 124      }
 125    else
 126      d->level = 0;
 127
 128    elm_genlist_item_append(list, _itc,
 129                            d, parent,
 130                            ELM_GENLIST_ITEM_NONE,
 131                            _item_sel_cb, NULL);
 132 }
 133
 134 static void
 135 _favorite_cb(void *data, Evas_Object *o __UNUSED__, void *event_info __UNUSED__)
 136 {
 137    Evas_Object *list = data;
 138    Elm_Object_Item *glit = elm_genlist_selected_item_get(list);
 139
 140    if (!glit) return;
 141
 142    Node_Data *d = elm_object_item_data_get(glit);
 143    d->favorite = !d->favorite;
 144    if (d->favorite)
 145      elm_genlist_item_item_class_update(glit, _itfav);
 146    else
 147      {
 148         if (d->children)
 149           elm_genlist_item_item_class_update(glit, _itp);
 150         else
 151           elm_genlist_item_item_class_update(glit, _itc);
 152      }
 153
 154    elm_genlist_item_update(glit);
 155 }
 156
 157 static void
 158 _add_child_cb(void *data, Evas_Object *o __UNUSED__, void *event_info __UNUSED__)
 159 {
 160    Evas_Object *list = data;
 161    Elm_Object_Item *glit = elm_genlist_selected_item_get(list);
 162    Elm_Object_Item *glit_prev, *glit_parent;
 163
 164    if (!glit) return;
 165
 166    Node_Data *d = elm_object_item_data_get(glit);
 167    glit_prev = elm_genlist_item_prev_get(glit);
 168    glit_parent = elm_genlist_item_parent_get(glit);
 169
 170    Eina_Bool change_item = !d->children;
 171
 172    // creating new item data
 173    Node_Data *ndata = malloc(sizeof(*ndata));
 174    ndata->value = nitems++;
 175    ndata->children = NULL;
 176    ndata->favorite = EINA_FALSE;
 177    ndata->level = elm_genlist_item_expanded_depth_get(glit) + 1;
 178    d->children = eina_list_append(d->children, ndata);
 179
 180    // Changing leaf item to parent item
 181    if (change_item)
 182      {
 183         elm_object_item_del(glit);
 184
 185         if (glit_prev != glit_parent)
 186           glit = elm_genlist_item_insert_after(list, _itp, d, glit_parent,
 187                                                glit_prev,
 188                                                ELM_GENLIST_ITEM_SUBITEMS,
 189                                                _item_sel_cb, NULL);
 190         else
 191           glit = elm_genlist_item_prepend(list, _itp, d, glit_parent,
 192                                           ELM_GENLIST_ITEM_SUBITEMS,
 193                                           _item_sel_cb, NULL);
 194         elm_genlist_item_expanded_set(glit, EINA_FALSE);
 195         elm_genlist_item_selected_set(glit, EINA_TRUE);
 196      }
 197    else if (elm_genlist_item_expanded_get(glit))
 198      {
 199         elm_genlist_item_append(list, _itc, ndata, glit,
 200                                 ELM_GENLIST_ITEM_NONE, _item_sel_cb, NULL);
 201      }
 202
 203    elm_genlist_item_update(glit);
 204
 205 }
 206
 207 static void
 208 _clear_list(Node_Data *d)
 209 {
 210    Node_Data *tmp;
 211
 212    EINA_LIST_FREE(d->children, tmp)
 213       _clear_list(tmp);
 214    free(d);
 215 }
 216
 217 static void
 218 _del_item_cb(void *data, Evas_Object *o __UNUSED__, void *event_info __UNUSED__)
 219 {
 220    Evas_Object *list = data;
 221    Elm_Object_Item *glit = elm_genlist_selected_item_get(list);
 222    Elm_Object_Item *glit_parent = NULL;
 223
 224    if (!glit) return;
 225
 226    Node_Data *pdata, *d = elm_object_item_data_get(glit);
 227    glit_parent = elm_genlist_item_parent_get(glit);
 228    elm_genlist_item_subitems_clear(glit);
 229    elm_object_item_del(glit);
 230
 231    _clear_list(d);
 232
 233    if (!glit_parent) return;
 234
 235    pdata = elm_object_item_data_get(glit_parent);
 236    pdata->children = eina_list_remove(pdata->children, d);
 237    elm_genlist_item_update(glit_parent);
 238 }
 239
 240 static void
 241 _expand_request_cb(void *data __UNUSED__, Evas_Object *o __UNUSED__, void *event_info)
 242 {
 243    Elm_Object_Item *glit = event_info;
 244    printf("expand request on item: %p\n", event_info);
 245    elm_genlist_item_expanded_set(glit, EINA_TRUE);
 246 }
 247
 248 static void
 249 _contract_request_cb(void *data __UNUSED__, Evas_Object *o __UNUSED__, void *event_info)
 250 {
 251    Elm_Object_Item *glit = event_info;
 252    printf("contract request on item: %p\n", event_info);
 253    elm_genlist_item_expanded_set(glit, EINA_FALSE);
 254 }
 255
 256 static void
 257 _expanded_cb(void *data __UNUSED__, Evas_Object *o __UNUSED__, void *event_info)
 258 {
 259    Eina_List *l;
 260    Elm_Object_Item *glit = event_info;
 261    Node_Data *it_data, *d = elm_object_item_data_get(glit);
 262    Evas_Object *list = elm_object_item_widget_get(glit);
 263
 264    Elm_Genlist_Item_Class *ic;
 265
 266    EINA_LIST_FOREACH(d->children, l, it_data)
 267      {
 268         Elm_Object_Item *nitem;
 269         Elm_Genlist_Item_Type type = ELM_GENLIST_ITEM_NONE;
 270         printf("expanding item: #%d from parent #%d\n", it_data->value, d->value);
 271         if (it_data->favorite)
 272           ic = _itfav;
 273         else if (it_data->children)
 274           {
 275              ic = _itp;
 276              type = ELM_GENLIST_ITEM_SUBITEMS;
 277           }
 278         else
 279           ic = _itc;
 280
 281         nitem = elm_genlist_item_append(list, ic, it_data, glit,
 282                                         type, _item_sel_cb, NULL);
 283         elm_genlist_item_expanded_set(nitem, EINA_FALSE);
 284      }
 285 }
 286
 287 static void
 288 _contracted_cb(void *data __UNUSED__, Evas_Object *o __UNUSED__, void *event_info)
 289 {
 290    Elm_Object_Item *glit = event_info;
 291    elm_genlist_item_subitems_clear(glit);
 292 }
 293
 294 static Evas_Object *
 295 _button_add(Evas_Object *list, Evas_Object *box, const char *label, Evas_Smart_Cb cb)
 296 {
 297    Evas_Object *bt;
 298
 299    bt = elm_button_add(elm_object_parent_widget_get(list));
 300    elm_object_text_set(bt, label);
 301    elm_box_pack_end(box, bt);
 302    evas_object_show(bt);
 303
 304    if (cb)
 305      evas_object_smart_callback_add(bt, "clicked", cb, list);
 306
 307    return bt;
 308 }
 309
 310 int
 311 elm_main(int argc __UNUSED__, char **argv __UNUSED__)
 312 {
 313    Evas_Object *win, *bg, *box, *fbox;
 314    Evas_Object *list;
 315    int i;
 316
 317    win = elm_win_add(NULL, "icon", ELM_WIN_BASIC);
 318    elm_win_title_set(win, "Icon");
 319    elm_policy_set(ELM_POLICY_QUIT, ELM_POLICY_QUIT_LAST_WINDOW_CLOSED);
 320    elm_win_autodel_set(win, EINA_TRUE);
 321
 322    bg = elm_bg_add(win);
 323    elm_bg_color_set(bg, 255,255 ,255);
 324    evas_object_size_hint_weight_set(bg, EVAS_HINT_EXPAND, EVAS_HINT_EXPAND);
 325    elm_win_resize_object_add(win, bg);
 326    evas_object_show(bg);
 327
 328    box = elm_box_add(win);
 329    evas_object_size_hint_weight_set(box, EVAS_HINT_EXPAND, EVAS_HINT_EXPAND);
 330    evas_object_size_hint_align_set(box, EVAS_HINT_FILL, EVAS_HINT_FILL);
 331    elm_win_resize_object_add(win, box);
 332    evas_object_show(box);
 333
 334    if (!_itc)
 335      {
 336         _itc = elm_genlist_item_class_new();
 337         _itc->item_style = "default";
 338         _itc->func.text_get = _item_label_get;
 339         _itc->func.content_get = _item_content_get;
 340         _itc->func.state_get = NULL;
 341         _itc->func.del = NULL;
 342      }
 343
 344    if (!_itp)
 345      {
 346         _itp = elm_genlist_item_class_new();
 347         _itp->item_style = "default";
 348         _itp->func.text_get = _parent_label_get;
 349         _itp->func.content_get = _parent_content_get;
 350         _itp->func.state_get = NULL;
 351         _itp->func.del = NULL;
 352      }
 353
 354    if (!_itfav)
 355      {
 356         _itfav = elm_genlist_item_class_new();
 357         _itfav->item_style = "default";
 358         _itfav->func.text_get = _favorite_label_get;
 359         _itfav->func.content_get = _favorite_content_get;
 360         _itfav->func.state_get = NULL;
 361         _itfav->func.del = NULL;
 362      }
 363
 364    list = elm_genlist_add(win);
 365
 366    evas_object_size_hint_weight_set(list, EVAS_HINT_EXPAND, EVAS_HINT_EXPAND);
 367    evas_object_size_hint_align_set(list, EVAS_HINT_FILL, EVAS_HINT_FILL);
 368    elm_box_pack_end(box, list);
 369    evas_object_show(list);
 370
 371    fbox = elm_box_add(win);
 372    elm_box_layout_set(fbox, evas_object_box_layout_flow_horizontal,
 373                       NULL, NULL);
 374    evas_object_size_hint_weight_set(fbox, EVAS_HINT_EXPAND, 0);
 375    evas_object_size_hint_align_set(fbox, EVAS_HINT_FILL, EVAS_HINT_FILL);
 376    elm_box_pack_end(box, fbox);
 377    evas_object_show(fbox);
 378
 379    _button_add(list, fbox, "append item", _append_cb);
 380    _button_add(list, fbox, "favorite", _favorite_cb);
 381    _button_add(list, fbox, "add child", _add_child_cb);
 382    _button_add(list, fbox, "del item", _del_item_cb);
 383
 384    for (i = 0; i < N_ITEMS; i++)
 385      {
 386         Elm_Object_Item *gli, *glg;
 387         Node_Data *data = malloc(sizeof(*data)); // data for this item
 388         data->children = NULL;
 389         data->value = i;
 390         data->favorite = EINA_FALSE;
 391         nitems++;
 392
 393         Node_Data *pdata; // data for the parent of the group
 394
 395         printf("creating item: #%d\n", data->value);
 396         if (i % 3 == 0)
 397           {
 398              glg = gli = elm_genlist_item_append(list, _itp, data, NULL,
 399                                                  ELM_GENLIST_ITEM_SUBITEMS,
 400                                                  _item_sel_cb, NULL);
 401              elm_genlist_item_expanded_set(glg, EINA_TRUE);
 402              pdata = data;
 403              data->level = 0;
 404           }
 405         else
 406           {
 407              gli = elm_genlist_item_append(list, _itc, data, glg,
 408                                            ELM_GENLIST_ITEM_NONE,
 409                                            _item_sel_cb, NULL);
 410              pdata->children = eina_list_append(pdata->children, data);
 411              data->level = 1;
 412           }
 413      }
 414
 415    evas_object_smart_callback_add(list, "expand,request", _expand_request_cb, list);
 416    evas_object_smart_callback_add(list, "contract,request", _contract_request_cb, list);
 417    evas_object_smart_callback_add(list, "expanded", _expanded_cb, list);
 418    evas_object_smart_callback_add(list, "contracted", _contracted_cb, list);
 419
 420    evas_object_size_hint_min_set(bg, 160, 160);
 421    evas_object_size_hint_max_set(bg, 640, 800);
 422    evas_object_resize(win, 420, 600);
 423    evas_object_show(win);
 424
 425    elm_run();
 426
 427    return 0;
 428 }
 429
 430 ELM_MAIN()