efl: add facility to generate an event when an item is created by the factory.

Reviewed-by: SangHyeon Jade Lee <sh10233.lee@samsung.com>
Differential Revision: https://phab.enlightenment.org/D7446

src/lib/efl/Efl.h

@@ -197,6 +197,22 @@ typedef Efl_Gfx_Path_Command_Type Efl_Gfx_Path_Command;
  */
 EAPI Efl_Object *efl_part(const Eo *obj, const char *name);
 
+/**
+ * @brief This triggers the create method of a factory and trigger the item created event.
+ *
+ * @param[in] factory The factory that will provide the item
+ * @param[in] model The model to use to fetch information from
+ * @param[in] parent The parent of the newly created item
+ * @return A future that will resolve with the newly created item.
+ *
+ * @since 1.22
+ * @note This exists as we always want to trigger the event once all the logic
+ * of every factory in the chain has done what it planned to do. Basically we
+ * want the inverse of inheritance call like efl_super. So we do setup the future
+ * in this way.
+ */
+EAPI Eina_Future *efl_ui_view_factory_create_with_event(Efl_Ui_Factory *factory, Efl_Model *model, Efl_Gfx_Entity *parent);
+
 #else
 
 #ifndef EFL_NOLEGACY_API_SUPPORT

src/lib/efl/interfaces/efl_interfaces_main.c

@@ -113,3 +113,24 @@ __efl_internal_init(void)
 {
    efl_model_init();
 }
+
+static Eina_Value
+_efl_ui_view_factory_item_created(Eo *factory, void *data EINA_UNUSED, const Eina_Value v)
+{
+   Efl_Ui_Factory_Item_Created_Event event = { NULL, NULL };
+
+   eina_value_pget(&v, &event.item);
+   event.model = efl_ui_view_model_get(event.item);
+
+   efl_event_callback_call(factory, EFL_UI_FACTORY_EVENT_CREATED, &event);
+
+   return v;
+}
+
+EAPI Eina_Future *
+efl_ui_view_factory_create_with_event(Efl_Ui_Factory *factory, Efl_Model *model, Efl_Gfx_Entity *parent)
+{
+   return efl_future_then(efl_ui_factory_create(factory, model, parent), factory,
+                          .success_type = EINA_VALUE_TYPE_OBJECT,
+                          .success = _efl_ui_view_factory_item_created);
+}

src/lib/efl/interfaces/efl_ui_factory.eo

@@ -1,3 +1,9 @@
+struct Efl.Ui.Factory_Item_Created_Event {
+   [[EFL Ui Factory event structure provided when an item was just created.]]
+   model: Efl.Model; [[The model already set on the new item.]]
+   item: Efl.Gfx.Entity; [[The item that was just created.]]
+}
+
 interface Efl.Ui.Factory (Efl.Ui.Model.Connect)
 {
    [[Efl UI factory interface]]
@@ -24,4 +30,7 @@ interface Efl.Ui.Factory (Efl.Ui.Model.Connect)
          }
       }
    }
+   events {
+      created: Efl.Ui.Factory_Item_Created_Event; [[Event triggered when an item has been successfully created.]]
+   }
 }