efl_ui_win: add 'exit_on_all_windows_closed' class property and unit test

Summary:
this property causes the main loop to exit with the passed exit code
when the standby event is triggered

@feature
ref T5494

Reviewers: cedric, bu5hm4n, segfaultxavi

Reviewed By: cedric, bu5hm4n, segfaultxavi

Subscribers: segfaultxavi, bu5hm4n, #reviewers, #committers

Tags: #efl

Maniphest Tasks: T5494

Differential Revision: https://phab.enlightenment.org/D7594

src/lib/elementary/efl_ui_win.c

@@ -360,6 +360,7 @@ static const Elm_Action key_actions[] = {
 
 Eina_List *_elm_win_list = NULL;
 int _elm_win_deferred_free = 0;
+static Eina_Value exit_on_all_windows_closed;
 
 static Eina_Bool _elm_win_throttle_ok = EINA_FALSE;
 static int _elm_win_count = 0;
@@ -2991,7 +2992,11 @@ _efl_ui_win_efl_canvas_group_group_del(Eo *obj, Efl_Ui_Win_Data *sd)
          _elm_win_flush_cache_and_exit(obj);
      }
    if (!_elm_win_list)
-     efl_event_callback_call(efl_app_main_get(EFL_APP_CLASS), EFL_APP_EVENT_STANDBY, NULL);
+     {
+        efl_event_callback_call(efl_app_main_get(EFL_APP_CLASS), EFL_APP_EVENT_STANDBY, NULL);
+        if (eina_value_type_get(&exit_on_all_windows_closed))
+          efl_loop_quit(efl_loop_get(obj), exit_on_all_windows_closed);
+     }
 }
 
 EOLIAN static void
@@ -6240,6 +6245,23 @@ _dbus_menu_set(Eina_Bool dbus_connect, void *data)
    //sd->deferred_resize_job = EINA_TRUE;
 }
 
+EOLIAN static const Eina_Value *
+_efl_ui_win_exit_on_all_windows_closed_get(const Eo *obj EINA_UNUSED, void *pd EINA_UNUSED)
+{
+   return &exit_on_all_windows_closed;
+}
+
+EOLIAN static void
+_efl_ui_win_exit_on_all_windows_closed_set(Eo *obj EINA_UNUSED, void *pd EINA_UNUSED, const Eina_Value *exit_code)
+{
+   const Eina_Value_Type *type = eina_value_type_get(exit_code);
+
+   if (type)
+     eina_value_copy(exit_code, &exit_on_all_windows_closed);
+   else
+     eina_value_flush(&exit_on_all_windows_closed);
+}
+
 EOLIAN static void
 _efl_ui_win_maximized_set(Eo *obj EINA_UNUSED, Efl_Ui_Win_Data *sd, Eina_Bool maximized)
 {

src/lib/elementary/efl_ui_win.eo

@@ -657,6 +657,18 @@ class Efl.Ui.Win extends Efl.Ui.Widget implements Efl.Canvas.Scene, Efl.Access.W
            This will try and delete all the windows in the stack that
            are above the window.]]
       }
+      @property exit_on_all_windows_closed @class {
+         [[Enable quitting the main loop when all windows are closed.
+
+           When set, the main loop will quit with the passed exit code once all windows have been closed.
+
+           The Eina.Value passed should be $EMPTY to unset this state or an int value to be
+           used as the exit code.
+         ]]
+         values {
+            exit_code: const(any_value_ptr); [[The exit code to use when exiting]]
+         }
+      }
       activate {
          [[Activate a window object.
 

src/tests/elementary/elm_test_win.c

@@ -39,6 +39,14 @@ _timer_delete_request_cb(void *data)
    return EINA_FALSE;
 }
 
+static Eina_Bool
+_timer_del_window_cb(void *data)
+{
+   Eo *win = (Eo*) data;
+   evas_object_del(win);
+   return EINA_FALSE;
+}
+
 static Eina_Bool
 _timer_hide_window_cb(void *data)
 {
@@ -154,6 +162,29 @@ EFL_START_TEST(elm_win_autohide)
 }
 EFL_END_TEST
 
+EFL_START_TEST (elm_win_test_app_exit_on_windows_close)
+{
+   Eo *win = win_add(NULL, "win", ELM_WIN_BASIC);
+   Eo *app = efl_app_main_get(EFL_APP_CLASS);
+   Eina_Value val, *exit_val;
+   int code;
+
+   val = eina_value_int_init(66);
+   efl_ui_win_exit_on_all_windows_closed_set(win, &val);
+   efl_gfx_entity_visible_set(win, EINA_TRUE);
+
+   Eina_Bool fail_flag = EINA_FALSE;
+   ecore_timer_add(_timeout1, _timer_del_window_cb, win);
+   ecore_timer_add(_timeout_fail, _timer_fail_flag_cb, &fail_flag);
+
+   exit_val = efl_loop_begin(efl_loop_get(win));
+   ck_assert(eina_value_int_get(exit_val, &code));
+   ck_assert_int_eq(code, 66);
+   efl_ui_win_exit_on_all_windows_closed_set(app, &EINA_VALUE_EMPTY);
+}
+EFL_END_TEST
+
+
 EFL_START_TEST(elm_win_policy_quit_last_window_hidden)
 {
    elm_policy_set(ELM_POLICY_QUIT, ELM_POLICY_QUIT_LAST_WINDOW_HIDDEN);
@@ -405,6 +436,7 @@ void elm_test_win(TCase *tc)
    tcase_add_test(tc, elm_atspi_role_get);
    tcase_add_test(tc, elm_atspi_component_screen_position);
    tcase_add_test(tc, elm_win_policy_quit_last_window_hidden);
+   tcase_add_test(tc, elm_win_test_app_exit_on_windows_close);
    tcase_add_test(tc, efl_ui_win_multi_touch_inputs);
 #ifdef HAVE_ELEMENTARY_X
    tcase_add_test(tc, elm_win_autohide);