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+/*************************************************************************
+ *
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * Copyright 2008 by Sun Microsystems, Inc.
+ *
+ * OpenOffice.org - a multi-platform office productivity suite
+ *
+ * $RCSfile: modeltoviewhelper.hxx,v $
+ * $Revision: 1.4 $
+ *
+ * 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 _MODELTOVIEWHELPER_HXX
+#define _MODELTOVIEWHELPER_HXX
+
+#include <sal/types.h>
+
+#include <vector>
+
+/** Some helpers for converting model strings to view strings.
+
+    A paragraph string does not have its fields expanded, i.e., they are
+    represented by a special character inside the string with an additional
+    attribute assigned to it. For some tasks (e.g., SmartTags) it is required
+    to expand the fields to get the string as it appears in the view. Two
+    helper functions are provided to convert model positions to view positions
+    and vice versa.
+*/
+namespace ModelToViewHelper
+{
+    /** For each field in the model string, there is an entry in the conversion
+        map. The first value of the ConversionMapEntry points to the field
+        position in the model string, the second value points to the associated
+        position in the view string. The last entry in the conversion map
+        denotes the lengths of the model resp. view string.
+    */
+    typedef std::pair< sal_uInt32 , sal_uInt32 > ConversionMapEntry;
+    typedef std::vector< ConversionMapEntry > ConversionMap;
+
+    /** This struct defines a position in the model string.
+
+        The 'main' position is given by mnPos. If there's a field located at
+        this position, mbIsField is set and mnSubPos denotes the position inside
+        that field.
+    */
+    struct ModelPosition
+    {
+        sal_uInt32 mnPos;
+        sal_uInt32 mnSubPos;
+        bool mbIsField;
+
+        ModelPosition() : mnPos(0), mnSubPos(0), mbIsField(false) {}
+    };
+
+    /** Converts a model position into a view position
+
+        @param pMap
+            pMap is the conversion map required for the calculation. If pMap is
+            0, no conversion takes place, i.e., it is assumed that the model
+            string is identical to the view string.
+
+        @param nPos
+            nPos denotes a position in the model string which should be
+            converted. Note that converting model positions inside fields is
+            not supported, therefore nPos is not of type ModelPosition.
+
+        @return
+            the position of nPos in the view string. In case the conversion
+            could not be performed (e.g., because there is not ConversionMap or
+            nPos is behind the last entry in the conversion map) nPos will
+            be returned.
+    */
+    sal_uInt32 ConvertToViewPosition( const ConversionMap* pMap, sal_uInt32 nModelPos );
+
+    /** Converts a view position into a model position
+
+        @param pMap
+            pMap is the conversion map required for the calculation. If pMap is
+            0, no conversion takes place, i.e., it is assumed that the model
+            string is identical to the view string.
+
+        @param nPos
+            nPos denotes a position in the view string which should be
+            converted.
+
+        @return
+            the position of nPos in the model string. In case the conversion
+            could not be performed (e.g., because there is not ConversionMap or
+            nPos is behind the last entry in the conversion map) a model
+            model position with mnPos = nPos and mnIsField = false will be
+            returned.
+    */
+    ModelPosition ConvertToModelPosition( const ConversionMap* pMap, sal_uInt32 nViewPos );
+}
+
+#endif