efl

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//Compile with:
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//gcc -o prefs_example_01 prefs_example_01.c -g `pkg-config --cflags --libs elementary`
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#include <Elementary.h>
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//testing ui reflection on prefs data changes
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static Eina_Bool
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_elm_prefs_data_change(void *data)
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{
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   Evas_Object *notify = data;
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   Elm_Prefs_Data *prefs_data;
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   Elm_Prefs_Item_Type type;
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   Eina_Value value;
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   prefs_data = evas_object_data_get(notify, "prefs_data");
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   if (elm_prefs_data_value_get(prefs_data, "main:universe", &type, &value))
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     {
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        eina_value_set(&value, 42);
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        elm_prefs_data_value_set(prefs_data, "main:universe", type, &value);
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     }
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   if (elm_prefs_data_value_get(prefs_data, "main:text", &type, &value))
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     {
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        eina_value_set(&value, "This is a text field (:");
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        elm_prefs_data_value_set(prefs_data, "main:text", type, &value);
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     }
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   evas_object_show(notify);
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   return ECORE_CALLBACK_RENEW;
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}
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static void
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_page_saved_cb(void *data EINA_UNUSED, Evas_Object *obj EINA_UNUSED, void *event_info)
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{
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   const char *page = event_info;
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   printf("page %s was saved!\n", page);
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}
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static void
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_page_loaded_cb(void *data EINA_UNUSED, Evas_Object *obj EINA_UNUSED, void *event_info)
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{
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   const char *page = event_info;
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   printf("page %s was loaded!\n", page);
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}
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static void
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_item_changed_cb(void *data EINA_UNUSED, Evas_Object *obj EINA_UNUSED, void *event_info)
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{
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   const char *item = event_info;
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   printf("item %s was changed!\n", item);
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}
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EAPI_MAIN int
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elm_main(int argc EINA_UNUSED, char **argv EINA_UNUSED)
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{
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   Evas_Object *win, *prefs, *notify, *label;
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   Elm_Prefs_Data *prefs_data;
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   win = elm_win_util_standard_add("prefs", "Prefs Example 01");
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   elm_policy_set(ELM_POLICY_QUIT, ELM_POLICY_QUIT_LAST_WINDOW_CLOSED);
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   elm_win_autodel_set(win, EINA_TRUE);
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   prefs = elm_prefs_add(win);
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   evas_object_size_hint_weight_set(prefs, EVAS_HINT_EXPAND, EVAS_HINT_EXPAND);
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   elm_win_resize_object_add(win, prefs);
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   evas_object_show(prefs);
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   evas_object_smart_callback_add(prefs, "page,saved", _page_saved_cb, NULL);
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   evas_object_smart_callback_add(prefs, "page,loaded", _page_loaded_cb, NULL);
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   evas_object_smart_callback_add(prefs, "item,changed", _item_changed_cb, win);
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   elm_prefs_autosave_set(prefs, EINA_TRUE);
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   prefs_data = elm_prefs_data_new("./prefs_example_01.cfg", NULL,
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                                   EET_FILE_MODE_READ_WRITE);
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   elm_prefs_file_set(prefs, "prefs_example_01.epb", NULL);
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   elm_prefs_data_set(prefs, prefs_data);
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   label = elm_label_add(win);
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   elm_object_text_set(label, "Setting Values Programmatically");
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   evas_object_size_hint_align_set(label, 0.5, 0.5);
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   notify = elm_notify_add(win);
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   elm_notify_align_set(notify, 0.5, 1);
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   elm_notify_timeout_set(notify, 2);
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   elm_object_content_set(notify, label);
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   evas_object_size_hint_weight_set(notify, EVAS_HINT_EXPAND, EVAS_HINT_EXPAND);
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   evas_object_show(notify);
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   evas_object_data_set(notify, "prefs_data", prefs_data);
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   evas_object_resize(win, 320, 320);
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   evas_object_show(win);
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   ecore_timer_add(5.0, _elm_prefs_data_change, notify);
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   elm_run();
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   elm_prefs_data_unref(prefs_data);
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   return 0;
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}
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ELM_MAIN()
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