HistoryWindow.cpp

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/****************************************************************************

Copyright (c) 2008 Deepak Chandran
Contact: Deepak Chandran (dchandran1@gmail.com)
See COPYRIGHT.TXT

This is the history stack class that is used to store the undo/redo commands.

****************************************************************************/

#include "HistoryWindow.h"

namespace Tinkercell
{

        void HistoryWindow::undo() 
        { 
                if (stack()) stack()->undo();
        }

        void HistoryWindow::redo() 
        { 
                if (stack()) stack()->redo();
        }

        void HistoryWindow::push(QUndoCommand * command) 
        { 
                if (stack()) stack()->push(command);
        }

}