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/**************************************************************
*
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance
* with the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing,
* software distributed under the License is distributed on an
* "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
* KIND, either express or implied. See the License for the
* specific language governing permissions and limitations
* under the 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
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