merged with release_2_0

1 files changed, 13 insertions, 0 deletions

diff --git a/muse2/muse/undo.cpp b/muse2/muse/undo.cpp
index 8587b108..06c190a2 100644
--- a/muse2/muse/undo.cpp
+++ b/muse2/muse/undo.cpp
@@ -789,6 +789,7 @@ void Song::doRedo2()
 
 UndoOp::UndoOp()
 {
+  type=UndoOp::DoNothing;
 }
 
 UndoOp::UndoOp(UndoType type_)
@@ -1087,4 +1088,16 @@ void Song::doRedo3()
       dirty = true;
       }
 
+
+bool Undo::empty() const
+{
+  if (std::list<UndoOp>::empty()) return true;
+  
+  for (const_iterator it=begin(); it!=end(); it++)
+    if (it->type!=UndoOp::DoNothing)
+      return false;
+  
+  return true;
+}
+
 } // namespace MusECore