//!
//! undo the last performed action
//!
public void undoAction()
{
if (undoActionStack.Count > 1)
{
for (int i = 0; i < (undoActionStack[undoActionStack.Count - 2] as ArrayList).Count; i++)
{
((undoActionStack[undoActionStack.Count - 2] as ArrayList)[i] as Action).execute();
}
redoActionStack.Add(undoActionStack[undoActionStack.Count - 1]);
mainController.activateRedoButton();
undoActionStack.RemoveAt(undoActionStack.Count - 1);
}
if (undoActionStack.Count == 1)
{
mainController.deactivateUndoButton();
}
}
