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diff --git a/offapi/com/sun/star/chart2/XInternalDataProvider.idl b/offapi/com/sun/star/chart2/XInternalDataProvider.idl
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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 com_sun_star_chart2_XInternalDataProvider_idl
+#define com_sun_star_chart2_XInternalDataProvider_idl
+
+#include <com/sun/star/chart2/data/XDataProvider.idl>
+#include <com/sun/star/chart2/data/XDataSequence.idl>
+
+module com
+{
+module sun
+{
+module star
+{
+module chart2
+{
+
+/** An internal DataProvider that has more access to data than a plain
+    DataProvider.
+ */
+interface XInternalDataProvider  : com::sun::star::chart2::data::XDataProvider
+{
+    boolean         hasDataByRangeRepresentation( [in] string aRange );
+    sequence< any > getDataByRangeRepresentation( [in] string aRange );
+    void            setDataByRangeRepresentation( [in] string aRange, [in] sequence< any > aNewData );
+
+    /** @param Note that -1 is allowed as the sequence is inserted
+               after the given index. So to insert a sequence as the
+               new first sequence (index 0), you would pass -1 here.
+     */
+    void insertSequence( [in] long nAfterIndex );
+    void deleteSequence( [in] long nAtIndex );
+    /** same as insertSequence with nAfterIndex being the largest
+        current index of the data, i.e. (size - 1)
+     */
+    void appendSequence();
+
+    void insertDataPointForAllSequences( [in] long nAfterIndex );
+    void deleteDataPointForAllSequences( [in] long nAtIndex );
+    void swapDataPointWithNextOneForAllSequences( [in] long nAtIndex );
+
+    /** If range representations of data sequences change due to
+        internal structural changes, they must be registered at the
+        data provider.
+
+        <p>Sequences that are directly retrieved via the methods of
+        the XDataProvider interface are already registered.  If a
+        labeled data sequence was created by cloning an existing one,
+        it has to be explicitly registered via this method.</p>
+     */
+    void registerDataSequenceForChanges( [in] data::XDataSequence xSeq );
+
+    /** insert an additional sequence for categories nLevel>=1;
+    categories at level 0 are always present and cannot be inserted or deleted
+    @since OOo 3.3
+    */
+    void insertComplexCategoryLevel( [in] long nLevel );
+    /** deletes an additional sequence for categories at nLevel>=1;
+    categories at level 0 are always present and cannot be deleted
+    @since OOo 3.3
+    */
+    void deleteComplexCategoryLevel( [in] long nLevel );
+};
+
+} ; // chart2
+} ; // com
+} ; // sun
+} ; // star
+
+
+#endif