1 files changed, 4 insertions, 0 deletions
diff --git a/src/lib/font.h b/src/lib/font.h
index 0dedf7e49..0dd63448e 100644
--- a/src/lib/font.h
+++ b/src/lib/font.h
@@ -22,6 +22,7 @@
 
 #include <libcxml/cxml.h>
 #include <boost/optional.hpp>
+#include <boost/signals2.hpp>
 #include <boost/filesystem.hpp>
 #include <string>
 
@@ -45,8 +46,11 @@ public:
 
 	void set_file (boost::filesystem::path file) {
 		_file = file;
+		Changed ();
 	}
 
+	boost::signals2::signal<void()> Changed;
+
 private:	
 	/** Font ID, used to describe it in the subtitle content */
 	std::string _id;