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diff --git a/chart2/source/inc/InternalData.hxx b/chart2/source/inc/InternalData.hxx
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+/*************************************************************************
+ *
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * Copyright 2000, 2010 Oracle and/or its affiliates.
+ *
+ * OpenOffice.org - a multi-platform office productivity suite
+ *
+ * This file is part of OpenOffice.org.
+ *
+ * OpenOffice.org is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Lesser General Public License version 3
+ * only, as published by the Free Software Foundation.
+ *
+ * OpenOffice.org is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Lesser General Public License version 3 for more details
+ * (a copy is included in the LICENSE file that accompanied this code).
+ *
+ * You should have received a copy of the GNU Lesser General Public License
+ * version 3 along with OpenOffice.org.  If not, see
+ * <http://www.openoffice.org/license.html>
+ * for a copy of the LGPLv3 License.
+ *
+ ************************************************************************/
+#ifndef CHART2_INTERNALDATA_HXX
+#define CHART2_INTERNALDATA_HXX
+
+#include <com/sun/star/uno/Sequence.hxx>
+
+#include <vector>
+#include <valarray>
+
+namespace chart
+{
+
+class InternalData
+{
+public:
+    InternalData();
+
+    void createDefaultData();
+
+    void setData( const ::com::sun::star::uno::Sequence<
+        ::com::sun::star::uno::Sequence< double > > & rDataInRows );
+    ::com::sun::star::uno::Sequence<
+        ::com::sun::star::uno::Sequence< double > > getData() const;
+
+    ::com::sun::star::uno::Sequence< double > getColumnValues( sal_Int32 nColumnIndex ) const;
+    ::com::sun::star::uno::Sequence< double > getRowValues( sal_Int32 nRowIndex ) const;
+
+    void setColumnValues( sal_Int32 nColumnIndex, const ::std::vector< double > & rNewData );
+    void setRowValues( sal_Int32 nRowIndex, const ::std::vector< double > & rNewData );
+
+    void setComplexColumnLabel( sal_Int32 nColumnIndex, const ::std::vector< ::rtl::OUString >& rComplexLabel );
+    void setComplexRowLabel( sal_Int32 nRowIndex, const ::std::vector< ::rtl::OUString >& rComplexLabel );
+
+    ::std::vector< ::rtl::OUString > getComplexColumnLabel( sal_Int32 nColumnIndex ) const;
+    ::std::vector< ::rtl::OUString > getComplexRowLabel( sal_Int32 nRowIndex ) const;
+
+    void swapRowWithNext( sal_Int32 nRowIndex );
+    void swapColumnWithNext( sal_Int32 nColumnIndex );
+
+    void insertColumn( sal_Int32 nAfterIndex );
+    void insertRow( sal_Int32 nAfterIndex );
+    void deleteColumn( sal_Int32 nAtIndex );
+    void deleteRow( sal_Int32 nAtIndex );
+
+    /// @return the index of the newly appended column
+    sal_Int32 appendColumn();
+    /// @return the index of the newly appended row
+    sal_Int32 appendRow();
+
+    sal_Int32 getRowCount() const;
+    sal_Int32 getColumnCount() const;
+
+    typedef ::std::valarray< double > tDataType;
+    typedef ::std::vector< ::std::vector< ::rtl::OUString > > tVecVecString; //inner index is hierarchical level
+
+    void setComplexRowLabels( const tVecVecString& rNewRowLabels );
+    tVecVecString getComplexRowLabels() const;
+    void setComplexColumnLabels( const tVecVecString& rNewColumnLabels );
+    tVecVecString getComplexColumnLabels() const;
+
+#if OSL_DEBUG_LEVEL > 2
+    void traceData() const;
+#endif
+
+private: //methods
+    /** resizes the data if at least one of the given dimensions is larger than
+        before.  The data is never becoming smaller only larger.
+
+        @return </TRUE>, if the data was enlarged
+    */
+    bool enlargeData( sal_Int32 nColumnCount, sal_Int32 nRowCount );
+
+private:
+    sal_Int32   m_nColumnCount;
+    sal_Int32   m_nRowCount;
+
+    tDataType       m_aData;
+    tVecVecString   m_aRowLabels;//outer index is row index, inner index is category level
+    tVecVecString   m_aColumnLabels;//outer index is column index
+};
+
+#endif
+
+} //  namespace chart