Issue #555 Make a number of shifted/rotated copies - selected object does not appear...

[modules/shaper.git] / src / Model / Model_AttributeSelectionList.cpp

diff --git a/src/Model/Model_AttributeSelectionList.cpp b/src/Model/Model_AttributeSelectionList.cpp
index 79eb5c714e12ee2e5565c209dfb271f3d793b389..3b67df9eb0a9063e23a7874fde696432fdaa9857 100644 (file)
--- a/src/Model/Model_AttributeSelectionList.cpp
+++ b/src/Model/Model_AttributeSelectionList.cpp
@@ -102,6 +102,14 @@ void Model_AttributeSelectionList::clear()
   }
 }
 
+bool Model_AttributeSelectionList::isInitialized()
+{
+  if (size() == 0) { // empty list is not initialized list: sketch will be not valid after add/undo
+    return false;
+  }
+  return ModelAPI_AttributeSelectionList::isInitialized();
+}
+
 Model_AttributeSelectionList::Model_AttributeSelectionList(TDF_Label& theLabel)
 {
   myIsInitialized = theLabel.FindAttribute(TDataStd_Integer::GetID(), mySize) == Standard_True;