src/examples/index_example_01.c

   1 /**
   2  * Simple Elementary's <b>index widget</b> example, illustrating its
   3  * usage and API.
   4  *
   5  * See stdout/stderr for output. Compile with:
   6  *
   7  * @verbatim
   8  * gcc -g index_example_01.c -o index_example_01 `pkg-config --cflags --libs elementary`
   9  * @endverbatim
  10  */
  11
  12 #include <Elementary.h>
  13 #include <assert.h>
  14
  15 static const char *dict[] = \
  16 {
  17 #include "dict.txt"
  18 };
  19
  20 static void
  21 _index_item_del(void *data, Evas_Object *obj, void *event_info)
  22 {
  23    fprintf(stdout, "Deleting index node (%s). Comparing index "
  24            "item data reported via callback with the one returned by "
  25            "index's API on items: %s.\n",
  26            elm_index_item_letter_get(event_info),
  27            data == elm_object_item_data_get(event_info) ? "OK" :
  28            "FAIL, something went wrong");
  29 }
  30
  31 /* delete an index item */
  32 static void
  33 _item_del(void *data, Evas_Object *obj, void *event_info)
  34 {
  35    Elm_Object_Item *it = elm_index_selected_item_get(data, 0);
  36
  37    if (!it) return;
  38
  39    fprintf(stdout, "Deleting last selected index item, which had letter"
  40            " %s (pointing to %p)\n", elm_index_item_letter_get(it),
  41            elm_object_item_data_get(it));
  42
  43    elm_object_item_del(it);
  44    elm_index_level_go(data, 0);
  45 }
  46
  47 static void
  48 _item_del_all(void *data, Evas_Object *obj, void *event_info)
  49 {
  50    elm_index_item_clear(data);
  51    elm_index_level_go(data, 0);
  52 }
  53
  54 static void
  55 _active_set(void *data, Evas_Object *obj, void *event_info)
  56 {
  57    Eina_Bool disabled = elm_index_autohide_disabled_get(data);
  58    elm_index_autohide_disabled_set(data, !disabled);
  59
  60    fprintf(stdout, "Toggling index programmatically to %s.\n",
  61            !disabled ? "On" : "Off");
  62 }
  63
  64 /* "delay,changed" hook */
  65 static void
  66 _index_changed(void *data, Evas_Object *obj, void *event_info)
  67 {
  68    elm_list_item_bring_in(elm_object_item_data_get(event_info));
  69 }
  70
  71 static void
  72 _index_selected(void *data, Evas_Object *obj, void *event_info)
  73 {
  74    Elm_Object_Item *lit = event_info;
  75
  76    fprintf(stdout, "New index item selected. Comparing item reported"
  77            " via callback with the selection returned by the API: "
  78            "%s.\n", lit == elm_index_selected_item_get(obj, 0) ? "OK" :
  79            "FAIL, something went wrong");
  80 }
  81
  82 EAPI_MAIN int
  83 elm_main(int argc, char **argv)
  84 {
  85    Evas_Object *win, *hbox, *vbox, *bt, *sep, *list, *id;
  86    Elm_Object_Item *lit;
  87    unsigned int i;
  88    char curr = 0;
  89
  90    elm_policy_set(ELM_POLICY_QUIT, ELM_POLICY_QUIT_LAST_WINDOW_CLOSED);
  91
  92    win = elm_win_util_standard_add("index", "Index Example");
  93    elm_win_autodel_set(win, EINA_TRUE);
  94
  95    vbox = elm_box_add(win);
  96    evas_object_size_hint_weight_set(vbox, EVAS_HINT_EXPAND, EVAS_HINT_EXPAND);
  97    elm_win_resize_object_add(win, vbox);
  98    evas_object_show(vbox);
  99
 100    list = elm_list_add(win);
 101    evas_object_size_hint_weight_set(list, EVAS_HINT_EXPAND, EVAS_HINT_EXPAND);
 102    evas_object_size_hint_align_set(list, EVAS_HINT_FILL, EVAS_HINT_FILL);
 103    evas_object_show(list);
 104    elm_box_pack_end(vbox, list);
 105
 106    id = elm_index_add(win);
 107    evas_object_size_hint_weight_set(id, EVAS_HINT_EXPAND, EVAS_HINT_EXPAND);
 108    elm_win_resize_object_add(win, id);
 109    evas_object_show(id);
 110
 111    for (i = 0; i < (sizeof(dict) / sizeof(dict[0])); i++)
 112      {
 113         lit = elm_list_item_append(list, dict[i], NULL, NULL, NULL, NULL);
 114
 115         if (curr != dict[i][0])
 116           {
 117              Elm_Object_Item *index_it;
 118              char buf[32];
 119
 120              curr = dict[i][0];
 121              /* indexing by first letters */
 122
 123              snprintf(buf, sizeof(buf), "%c", curr);
 124              index_it = elm_index_item_append(id, buf, NULL, lit);
 125
 126              /* this is here just to demostrate the API call */
 127              (void)elm_index_item_find(id, lit);
 128              assert(elm_index_item_find(id, lit) == index_it);
 129
 130              elm_object_item_del_cb_set(index_it, _index_item_del);
 131           }
 132      }
 133
 134    evas_object_smart_callback_add(id, "delay,changed", _index_changed,
 135                                   NULL);
 136    evas_object_smart_callback_add(id, "selected", _index_selected, NULL);
 137    elm_index_level_go(id, 0);
 138
 139    /* attribute setting knobs */
 140    sep = elm_separator_add(win);
 141    elm_separator_horizontal_set(sep, EINA_TRUE);
 142    elm_box_pack_end(vbox, sep);
 143    evas_object_show(sep);
 144
 145    hbox = elm_box_add(win);
 146    elm_box_horizontal_set(hbox, EINA_TRUE);
 147    evas_object_size_hint_weight_set(hbox, EVAS_HINT_EXPAND, 0);
 148    evas_object_size_hint_fill_set(hbox, EVAS_HINT_FILL, EVAS_HINT_FILL);
 149    elm_box_pack_end(vbox, hbox);
 150    evas_object_show(hbox);
 151
 152    bt = elm_button_add(win);
 153    elm_object_text_set(bt, "bring in index");
 154    evas_object_smart_callback_add(bt, "clicked", _active_set, id);
 155    elm_box_pack_end(hbox, bt);
 156    evas_object_show(bt);
 157
 158    bt = elm_button_add(win);
 159    elm_object_text_set(bt, "delete last selected item");
 160    evas_object_smart_callback_add(bt, "clicked", _item_del, id);
 161    elm_box_pack_end(hbox, bt);
 162    evas_object_show(bt);
 163
 164    bt = elm_button_add(win);
 165    elm_object_text_set(bt, "delete all items");
 166    evas_object_smart_callback_add(bt, "clicked", _item_del_all, id);
 167    elm_box_pack_end(hbox, bt);
 168    evas_object_show(bt);
 169
 170    evas_object_resize(win, 320, 600);
 171    evas_object_show(win);
 172
 173    elm_run();
 174
 175    return 0;
 176 }
 177 ELM_MAIN()