efl_ui/scrollable_content: be more explicit about scrollable_content_get()

Summary:
always return NULL when an internal text object exists to avoid exposing
internal objects; this is an abstraction mechanism which should not be
extended or relied upon

Reviewers: segfaultxavi

Reviewed By: segfaultxavi

Subscribers: cedric, #reviewers, #committers

Tags: #efl

Differential Revision: https://phab.enlightenment.org/D9910

src/lib/elementary/efl_ui_widget_scrollable_content.c

@@ -206,6 +206,7 @@ _efl_ui_widget_scrollable_content_scrollable_content_set(Eo *obj, Efl_Ui_Widget_
 EOLIAN static Eo *
 _efl_ui_widget_scrollable_content_scrollable_content_get(const Eo *obj EINA_UNUSED, Efl_Ui_Widget_Scrollable_Content_Data *pd)
 {
+   if (pd->label) return NULL;
    if (!pd->scroller) return NULL;
    return efl_content_get(pd->scroller);
 }

src/lib/elementary/efl_ui_widget_scrollable_content.eo

@@ -43,6 +43,8 @@ mixin @beta Efl.Ui.Widget_Scrollable_Content requires Efl.Object
       @property scrollable_content {
          [[This is the content which will be placed in the internal scroller.
 
+           If a scrollable text string is set, this will return $NULL.
+
            @since 1.23
          ]]
          set {