+ /**
+ * Gets the items in the margin widget.
+ */
+ virtual std::vector< std::shared_ptr<pv::view::ViewItem> > items() = 0;
+
+ /**
+ * Gets the first view item which has a label that contains @c pt .
+ * @param pt the point to search with.
+ * @return the view item that has been found, or and empty
+ * @c shared_ptr if no item was found.
+ */
+ virtual std::shared_ptr<pv::view::ViewItem> get_mouse_over_item(
+ const QPoint &pt) = 0;
+