Add Menu::setActive and MenuItem::setActive API

This provides a virtual function which may be overridden by subclasses so they
are notified when a different menu item is highlight.  Menu::setActive is called
first, with the index of the item that is about to be highlighted, though this
may be '-1'.  MenuItem::setActive will recieve a boolean which is true if this
MenuItem is highlighted and false otherwise.

1 files changed, 2 insertions, 0 deletions

diff --git a/src/FbTk/Menu.hh b/src/FbTk/Menu.hh
index 09bdd8c..dfefbc0 100644
--- a/src/FbTk/Menu.hh
+++ b/src/FbTk/Menu.hh
@@ -188,6 +188,8 @@ protected:
 
     virtual void update(FbTk::Subject *);
 
+        virtual void setActive(int index) { m_active_index = index; }
+
 private:
 
     void openSubmenu();