public void execute() {
oldClassName = node.getClassName();
if (oldClassName != null && MSG_DEFAULT.equals(oldClassName)) {
executed = false;
return;
}
oldReferenceName = node.getReferenceName();
node.setClassName(MSG_DEFAULT);
executed = true;
}
public void undo() {
if (!executed) return;
node.setClassName(oldClassName);
node.setReferenceName(oldReferenceName);
}