efl_ui: fix not to call _on_child_del() after container is deleted

If efl_ref() is called to child, then child may not be deleted when
container is deleted.
This causes _on_child_del() is called after container is deleted and it
causes crash if container data is accessed in _on_child_del().

To resolve the above issue, all callbacks of child are deleted not to
call _on_child_del() after container is deleted.

src/lib/elementary/efl_ui_box.c

@@ -180,6 +180,19 @@ _efl_ui_box_efl_object_constructor(Eo *obj, Efl_Ui_Box_Data *pd)
    return obj;
 }
 
+EOLIAN static void
+_efl_ui_box_efl_object_invalidate(Eo *obj, Efl_Ui_Box_Data *pd)
+{
+   Eo *child;
+
+   efl_invalidate(efl_super(obj, MY_CLASS));
+
+   EINA_LIST_FREE(pd->children, child)
+     {
+        efl_event_callback_array_del(child, efl_ui_box_callbacks(), obj);
+     }
+}
+
 /* CLEAN API BELOW */
 
 EOLIAN static int

src/lib/elementary/efl_ui_box.eo

@@ -29,6 +29,7 @@ class @beta Efl.Ui.Box extends Efl.Ui.Widget implements Efl.Pack_Linear, Efl.Pac
    }
    implements {
       Efl.Object.constructor;
+      Efl.Object.invalidate;
       Efl.Canvas.Group.group_calculate;
       Efl.Gfx.Entity.position { set; }
       Efl.Gfx.Entity.size { set; }

src/lib/elementary/efl_ui_relative_layout.c

@@ -555,6 +555,19 @@ _efl_ui_relative_layout_efl_object_constructor(Eo *obj, Efl_Ui_Relative_Layout_D
    return obj;
 }
 
+EOLIAN static void
+_efl_ui_relative_layout_efl_object_invalidate(Eo *obj, Efl_Ui_Relative_Layout_Data *pd)
+{
+   Eo *child;
+
+   efl_invalidate(efl_super(obj, MY_CLASS));
+
+   EINA_LIST_FREE(pd->children, child)
+     {
+        efl_event_callback_array_del(child, efl_ui_relative_layout_callbacks(), pd);
+     }
+}
+
 EOLIAN static void
 _efl_ui_relative_layout_efl_object_destructor(Eo *obj, Efl_Ui_Relative_Layout_Data *pd)
 {

src/lib/elementary/efl_ui_relative_layout.eo

@@ -69,6 +69,7 @@ class @beta Efl.Ui.Relative_Layout extends Efl.Ui.Widget implements Efl.Pack_Lay
    }
    implements {
       Efl.Object.constructor;
+      Efl.Object.invalidate;
       Efl.Object.destructor;
       Efl.Canvas.Group.group_calculate;
       Efl.Gfx.Entity.position { set; }

src/lib/elementary/efl_ui_table.c

@@ -234,6 +234,19 @@ _efl_ui_table_efl_object_constructor(Eo *obj, Efl_Ui_Table_Data *pd)
    return obj;
 }
 
+EOLIAN static void
+_efl_ui_table_efl_object_invalidate(Eo *obj, Efl_Ui_Table_Data *pd)
+{
+   Table_Item *gi;
+
+   efl_invalidate(efl_super(obj, MY_CLASS));
+
+   EINA_INLIST_FREE(EINA_INLIST_GET(pd->items), gi)
+     {
+        efl_event_callback_array_del(gi->object, efl_ui_table_callbacks(), obj);
+     }
+}
+
 EOLIAN static void
 _efl_ui_table_efl_pack_pack_padding_set(Eo *obj, Efl_Ui_Table_Data *pd, double h, double v, Eina_Bool scalable)
 {

src/lib/elementary/efl_ui_table.eo

@@ -19,6 +19,7 @@ class @beta Efl.Ui.Table extends Efl.Ui.Widget implements Efl.Pack_Table, Efl.Pa
    }
    implements {
       Efl.Object.constructor;
+      Efl.Object.invalidate;
       Efl.Canvas.Group.group_calculate;
       Efl.Gfx.Entity.position { set; }
       Efl.Gfx.Entity.size { set; }