737 lines
21 KiB
C++
737 lines
21 KiB
C++
/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
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/*
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* This file is part of the LibreOffice project.
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*
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* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/.
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*
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* This file incorporates work covered by the following license notice:
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*
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* Licensed to the Apache Software Foundation (ASF) under one or more
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* contributor license agreements. See the NOTICE file distributed
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* with this work for additional information regarding copyright
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* ownership. The ASF licenses this file to you under the Apache
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* License, Version 2.0 (the "License"); you may not use this file
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* except in compliance with the License. You may obtain a copy of
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* the License at http://www.apache.org/licenses/LICENSE-2.0 .
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*/
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#include <sal/config.h>
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#include <cstddef>
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#include <o3tl/string_view.hxx>
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#include <tools/debug.hxx>
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#include <tools/multisel.hxx>
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#include <rtl/ustrbuf.hxx>
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void MultiSelection::ImplClear()
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{
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// no selected indexes
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nSelCount = 0;
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aSels.clear();
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}
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std::size_t MultiSelection::ImplFindSubSelection( sal_Int32 nIndex ) const
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{
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// iterate through the sub selections
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std::size_t n = 0;
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for ( ;
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n < aSels.size() && nIndex > aSels[ n ].Max();
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++n ) {} /* empty loop */
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return n;
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}
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void MultiSelection::ImplMergeSubSelections( sal_Int32 nPos1, std::size_t nPos2 )
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{
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// didn't a sub selection at nPos2 exist?
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if ( nPos2 >= aSels.size() )
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return;
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// did the sub selections touch each other?
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if ( (aSels[ nPos1 ].Max() + 1) == aSels[ nPos2 ].Min() )
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{
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// merge them
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aSels[ nPos1 ].Max() = aSels[ nPos2 ].Max();
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aSels.erase( aSels.begin() + nPos2 );
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}
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}
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MultiSelection::MultiSelection():
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aTotRange( 0, -1 ),
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nCurSubSel(0),
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nCurIndex(0),
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nSelCount(0),
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bCurValid(false)
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{
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}
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void MultiSelection::Reset()
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{
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aTotRange = Range(0, -1);
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bCurValid = false;
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// clear the old sub selections
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ImplClear();
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}
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MultiSelection::MultiSelection( const MultiSelection& rOrig ) :
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aTotRange(rOrig.aTotRange),
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nSelCount(rOrig.nSelCount),
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bCurValid(rOrig.bCurValid)
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{
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if ( bCurValid )
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{
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nCurSubSel = rOrig.nCurSubSel;
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nCurIndex = rOrig.nCurIndex;
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}
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else
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{
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nCurSubSel = 0;
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nCurIndex = 0;
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}
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// copy the sub selections
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aSels.insert( aSels.end(), rOrig.aSels.begin(), rOrig.aSels.end() );
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}
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MultiSelection::MultiSelection( const Range& rRange ):
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aTotRange(rRange),
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nCurSubSel(0),
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nCurIndex(0),
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nSelCount(0),
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bCurValid(false)
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{
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}
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MultiSelection::~MultiSelection()
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{
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}
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MultiSelection& MultiSelection::operator= ( const MultiSelection& rOrig )
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{
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aTotRange = rOrig.aTotRange;
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bCurValid = rOrig.bCurValid;
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if ( bCurValid )
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{
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nCurSubSel = rOrig.nCurSubSel;
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nCurIndex = rOrig.nCurIndex;
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}
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// clear the old and copy the sub selections
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ImplClear();
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aSels.insert( aSels.end(), rOrig.aSels.begin(), rOrig.aSels.end() );
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nSelCount = rOrig.nSelCount;
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return *this;
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}
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void MultiSelection::SelectAll( bool bSelect )
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{
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ImplClear();
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if ( bSelect )
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{
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aSels.push_back( aTotRange );
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nSelCount = aTotRange.Len();
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}
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}
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bool MultiSelection::Select( sal_Int32 nIndex, bool bSelect )
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{
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DBG_ASSERT( aTotRange.Contains(nIndex), "selected index out of range" );
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// out of range?
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if ( !aTotRange.Contains(nIndex) )
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return false;
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// find the virtual target position
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std::size_t nSubSelPos = ImplFindSubSelection( nIndex );
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if ( bSelect )
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{
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// is it included in the found sub selection?
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if ( nSubSelPos < aSels.size() && aSels[ nSubSelPos ].Contains( nIndex ) )
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// already selected, nothing to do
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return false;
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// it will become selected
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++nSelCount;
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// is it at the end of the previous sub selection
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if ( nSubSelPos > 0 &&
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aSels[ nSubSelPos-1 ].Max() == (nIndex-1) )
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{
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// expand the previous sub selection
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aSels[ nSubSelPos-1 ].Max() = nIndex;
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// try to merge the previous sub selection
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ImplMergeSubSelections( nSubSelPos-1, nSubSelPos );
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}
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// is it at the beginning of the found sub selection
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else if ( nSubSelPos < aSels.size()
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&& aSels[ nSubSelPos ].Min() == (nIndex+1)
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)
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// expand the found sub selection
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aSels[ nSubSelPos ].Min() = nIndex;
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else
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{
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// create a new sub selection
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if ( nSubSelPos < aSels.size() ) {
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aSels.insert( aSels.begin() + nSubSelPos, Range( nIndex, nIndex ) );
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} else {
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aSels.push_back( Range( nIndex, nIndex ) );
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}
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if ( bCurValid && nCurSubSel >= nSubSelPos )
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++nCurSubSel;
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}
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}
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else
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{
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// is it excluded from the found sub selection?
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if ( nSubSelPos >= aSels.size()
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|| !aSels[ nSubSelPos ].Contains( nIndex )
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) {
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// not selected, nothing to do
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return false;
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}
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// it will become deselected
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--nSelCount;
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// is it the only index in the found sub selection?
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if ( aSels[ nSubSelPos ].Len() == 1 )
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{
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// remove the complete sub selection
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aSels.erase( aSels.begin() + nSubSelPos );
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return true;
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}
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// is it at the beginning of the found sub selection?
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if ( aSels[ nSubSelPos ].Min() == nIndex )
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++aSels[ nSubSelPos ].Min();
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// is it at the end of the found sub selection?
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else if ( aSels[ nSubSelPos ].Max() == nIndex )
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--aSels[ nSubSelPos ].Max();
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// it is in the middle of the found sub selection?
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else
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{
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// split the sub selection
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// we know nSubSelPos < aSels.size() since it's been tested some lines before
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aSels.insert( aSels.begin() + nSubSelPos, Range( aSels[ nSubSelPos ].Min(), nIndex-1 ) );
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aSels[ nSubSelPos+1 ].Min() = nIndex + 1;
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}
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}
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return true;
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}
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void MultiSelection::Select( const Range& rIndexRange, bool bSelect )
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{
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sal_Int32 nOld;
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sal_Int32 nTmpMin = rIndexRange.Min();
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sal_Int32 nTmpMax = rIndexRange.Max();
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sal_Int32 nCurMin = FirstSelected();
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sal_Int32 nCurMax = LastSelected();
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DBG_ASSERT(aTotRange.Contains(nTmpMax), "selected index out of range" );
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DBG_ASSERT(aTotRange.Contains(nTmpMin), "selected index out of range" );
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// replace whole selection?
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if( aSels.empty() || (nTmpMin <= nCurMin && nTmpMax >= nCurMax ) )
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{
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ImplClear();
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if ( bSelect )
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{
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aSels.push_back( rIndexRange );
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nSelCount = rIndexRange.Len();
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}
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return;
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}
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// expand on left side?
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if( nTmpMax < nCurMin )
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{
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if( bSelect )
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{
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// extend first range?
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if( nCurMin > (nTmpMax+1) )
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{
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aSels.insert( aSels.begin(), rIndexRange );
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nSelCount += rIndexRange.Len();
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}
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else
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{
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auto & rRange = aSels.front();
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nOld = rRange.Min();
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rRange.Min() = nTmpMin;
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nSelCount += ( nOld - nTmpMin );
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}
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bCurValid = false;
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}
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return;
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}
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// expand on right side?
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else if( nTmpMin > nCurMax )
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{
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if( bSelect )
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{
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// extend last range?
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if( nTmpMin > (nCurMax+1) )
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{
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aSels.push_back( rIndexRange );
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nSelCount += rIndexRange.Len();
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}
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else
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{
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auto & rRange = aSels.back();
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nOld = rRange.Max();
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rRange.Max() = nTmpMax;
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nSelCount += ( nTmpMax - nOld );
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}
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bCurValid = false;
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}
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return;
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}
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// TODO here is potential for optimization
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while( nTmpMin <= nTmpMax )
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{
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Select( nTmpMin, bSelect );
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nTmpMin++;
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}
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}
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bool MultiSelection::IsSelected( sal_Int32 nIndex ) const
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{
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// find the virtual target position
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std::size_t nSubSelPos = ImplFindSubSelection( nIndex );
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return nSubSelPos < aSels.size() && aSels[ nSubSelPos ].Contains(nIndex);
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}
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void MultiSelection::Insert( sal_Int32 nIndex, sal_Int32 nCount )
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{
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// find the virtual target position
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std::size_t nSubSelPos = ImplFindSubSelection( nIndex );
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// did we need to shift the sub selections?
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if ( nSubSelPos < aSels.size() )
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{ // did we insert an unselected into an existing sub selection?
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if ( aSels[ nSubSelPos ].Min() != nIndex
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&& aSels[ nSubSelPos ].Contains(nIndex)
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) { // split the sub selection
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aSels.insert( aSels.begin() + nSubSelPos, Range( aSels[ nSubSelPos ].Min(), nIndex-1 ) );
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++nSubSelPos;
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aSels[ nSubSelPos ].Min() = nIndex;
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}
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// shift the sub selections behind the inserting position
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for ( std::size_t nPos = nSubSelPos; nPos < aSels.size(); ++nPos )
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{
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aSels[ nPos ].Min() += nCount;
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aSels[ nPos ].Max() += nCount;
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}
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}
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bCurValid = false;
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aTotRange.Max() += nCount;
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}
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void MultiSelection::Remove( sal_Int32 nIndex )
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{
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// find the virtual target position
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std::size_t nSubSelPos = ImplFindSubSelection( nIndex );
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// did we remove from an existing sub selection?
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if ( nSubSelPos < aSels.size()
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&& aSels[ nSubSelPos ].Contains(nIndex)
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) {
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// does this sub selection only contain the index to be deleted
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if ( aSels[ nSubSelPos ].Len() == 1 ) {
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// completely remove the sub selection
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aSels.erase( aSels.begin() + nSubSelPos );
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} else {
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// shorten this sub selection
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--( aSels[ nSubSelPos++ ].Max() );
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}
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// adjust the selected counter
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--nSelCount;
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}
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// shift the sub selections behind the removed index
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for ( std::size_t nPos = nSubSelPos; nPos < aSels.size(); ++nPos )
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{
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--( aSels[ nPos ].Min() );
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--( aSels[ nPos ].Max() );
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}
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bCurValid = false;
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aTotRange.Max() -= 1;
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}
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sal_Int32 MultiSelection::FirstSelected()
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{
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nCurSubSel = 0;
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bCurValid = !aSels.empty();
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if ( !bCurValid )
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return SFX_ENDOFSELECTION;
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nCurIndex = aSels[ 0 ].Min();
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return nCurIndex;
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}
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sal_Int32 MultiSelection::LastSelected()
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{
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bCurValid = !aSels.empty();
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if ( !bCurValid )
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return SFX_ENDOFSELECTION;
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nCurSubSel = aSels.size() - 1;
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nCurIndex = aSels[ nCurSubSel ].Max();
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return nCurIndex;
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}
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sal_Int32 MultiSelection::NextSelected()
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{
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if ( !bCurValid )
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return SFX_ENDOFSELECTION;
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// is the next index in the current sub selection too?
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if ( nCurIndex < aSels[ nCurSubSel ].Max() )
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return ++nCurIndex;
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// are there further sub selections?
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if ( ++nCurSubSel >= aSels.size() )
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// we are at the end!
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return SFX_ENDOFSELECTION;
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nCurIndex = aSels[ nCurSubSel ].Min();
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return nCurIndex;
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}
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void MultiSelection::SetTotalRange( const Range& rTotRange )
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{
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aTotRange = rTotRange;
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// adjust lower boundary
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Range* pRange = aSels.empty() ? nullptr : &aSels.front();
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while( pRange )
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{
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if( pRange->Max() < aTotRange.Min() )
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{
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aSels.erase( aSels.begin() );
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}
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else if( pRange->Min() < aTotRange.Min() )
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{
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pRange->Min() = aTotRange.Min();
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break;
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}
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else
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break;
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pRange = aSels.empty() ? nullptr : &aSels.front();
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}
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// adjust upper boundary
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sal_Int32 nCount = aSels.size();
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while( nCount )
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{
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pRange = &aSels[ nCount - 1 ];
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if( pRange->Min() > aTotRange.Max() )
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{
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aSels.pop_back();
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}
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else if( pRange->Max() > aTotRange.Max() )
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{
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pRange->Max() = aTotRange.Max();
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break;
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}
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else
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break;
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nCount = aSels.size();
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}
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// re-calculate selection count
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nSelCount = 0;
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for (Range const & rSel : aSels)
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nSelCount += rSel.Len();
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bCurValid = false;
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nCurIndex = 0;
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}
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// StringRangeEnumerator
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StringRangeEnumerator::StringRangeEnumerator( std::u16string_view i_rInput,
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sal_Int32 i_nMinNumber,
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sal_Int32 i_nMaxNumber,
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sal_Int32 i_nLogicalOffset
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)
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: mnCount( 0 )
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, mnMin( i_nMinNumber )
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, mnMax( i_nMaxNumber )
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, mnOffset( i_nLogicalOffset )
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, mbValidInput( false )
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{
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// Parse string only if boundaries are valid.
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if( mnMin >= 0 && mnMax >= 0 && mnMin <= mnMax )
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mbValidInput = setRange( i_rInput );
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}
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bool StringRangeEnumerator::checkValue( sal_Int32 i_nValue, const o3tl::sorted_vector< sal_Int32 >* i_pPossibleValues ) const
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{
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if( i_nValue < 0 || i_nValue < mnMin || i_nValue > mnMax )
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return false;
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if( i_pPossibleValues && i_pPossibleValues->find( i_nValue ) == i_pPossibleValues->end() )
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return false;
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return true;
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}
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bool StringRangeEnumerator::insertRange( sal_Int32 i_nFirst, sal_Int32 i_nLast, bool bSequence )
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{
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bool bSuccess = true;
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if( bSequence )
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{
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// Check if the range is completely outside of possible pages range
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if ((i_nFirst < mnMin && i_nLast < mnMin) ||
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(i_nFirst > mnMax && i_nLast > mnMax))
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return false;
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if( i_nFirst < mnMin )
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i_nFirst = mnMin;
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if( i_nFirst > mnMax )
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i_nFirst = mnMax;
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if( i_nLast < mnMin )
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i_nLast = mnMin;
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if( i_nLast > mnMax )
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i_nLast = mnMax;
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if( checkValue( i_nFirst ) && checkValue( i_nLast ) )
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{
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maSequence.push_back( Range( i_nFirst, i_nLast ) );
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sal_Int32 nNumber = i_nLast - i_nFirst;
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nNumber = nNumber < 0 ? -nNumber : nNumber;
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mnCount += nNumber + 1;
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}
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else
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bSuccess = false;
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}
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else
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{
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if( checkValue( i_nFirst ) )
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{
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maSequence.push_back( Range( i_nFirst, i_nFirst ) );
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mnCount++;
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}
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else if( checkValue( i_nLast ) )
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{
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maSequence.push_back( Range( i_nLast, i_nLast ) );
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mnCount++;
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}
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else
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bSuccess = false;
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}
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return bSuccess;
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}
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void StringRangeEnumerator::insertJoinedRanges(
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const std::vector< sal_Int32 >& rNumbers )
|
|
{
|
|
size_t nCount = rNumbers.size();
|
|
if( nCount == 0 )
|
|
return;
|
|
|
|
if( nCount == 1 )
|
|
{
|
|
insertRange( rNumbers[0], -1, false );
|
|
return;
|
|
}
|
|
|
|
for( size_t i = 0; i < nCount - 1; i++ )
|
|
{
|
|
sal_Int32 nFirst = rNumbers[i];
|
|
sal_Int32 nLast = rNumbers[i + 1];
|
|
if( i > 0 )
|
|
{
|
|
if ( nFirst > nLast ) nFirst--;
|
|
else if( nFirst < nLast ) nFirst++;
|
|
}
|
|
|
|
insertRange( nFirst, nLast, nFirst != nLast );
|
|
}
|
|
}
|
|
|
|
bool StringRangeEnumerator::setRange( std::u16string_view aNewRange )
|
|
{
|
|
mnCount = 0;
|
|
maSequence.clear();
|
|
|
|
auto pInput = aNewRange.begin();
|
|
auto pInputEnd = aNewRange.end();
|
|
OUStringBuffer aNumberBuf( 16 );
|
|
std::vector< sal_Int32 > aNumbers;
|
|
bool bSequence = false;
|
|
while( pInput != pInputEnd )
|
|
{
|
|
while( pInput != pInputEnd && *pInput >= '0' && *pInput <= '9' )
|
|
aNumberBuf.append( *pInput++ );
|
|
if( !aNumberBuf.isEmpty() )
|
|
{
|
|
sal_Int32 nNumber = o3tl::toInt32(aNumberBuf) + mnOffset;
|
|
aNumberBuf.setLength(0);
|
|
aNumbers.push_back( nNumber );
|
|
bSequence = false;
|
|
}
|
|
if (pInput == pInputEnd)
|
|
break;
|
|
if( *pInput == '-' )
|
|
{
|
|
bSequence = true;
|
|
if( aNumbers.empty() )
|
|
{
|
|
// push out-of-range small value, to exclude ranges totally outside of possible range
|
|
aNumbers.push_back( mnMin-1 );
|
|
}
|
|
}
|
|
else if( *pInput == ',' || *pInput == ';' )
|
|
{
|
|
if( bSequence && !aNumbers.empty() )
|
|
{
|
|
// push out-of-range large value, to exclude ranges totally outside of possible range
|
|
aNumbers.push_back( mnMax+1 );
|
|
}
|
|
insertJoinedRanges( aNumbers );
|
|
|
|
aNumbers.clear();
|
|
bSequence = false;
|
|
}
|
|
else if( *pInput != ' ' )
|
|
return false; // parse error
|
|
|
|
pInput++;
|
|
}
|
|
// insert last entries
|
|
if( bSequence && !aNumbers.empty() )
|
|
{
|
|
// push out-of-range large value, to exclude ranges totally outside of possible range
|
|
aNumbers.push_back( mnMax+1 );
|
|
}
|
|
insertJoinedRanges( aNumbers );
|
|
|
|
return true;
|
|
}
|
|
|
|
bool StringRangeEnumerator::hasValue( sal_Int32 i_nValue, const o3tl::sorted_vector< sal_Int32 >* i_pPossibleValues ) const
|
|
{
|
|
if( i_pPossibleValues && i_pPossibleValues->find( i_nValue ) == i_pPossibleValues->end() )
|
|
return false;
|
|
size_t n = maSequence.size();
|
|
for( size_t i= 0; i < n; ++i )
|
|
{
|
|
const StringRangeEnumerator::Range rRange( maSequence[i] );
|
|
if( rRange.nFirst < rRange.nLast )
|
|
{
|
|
if( i_nValue >= rRange.nFirst && i_nValue <= rRange.nLast )
|
|
return true;
|
|
}
|
|
else
|
|
{
|
|
if( i_nValue >= rRange.nLast && i_nValue <= rRange.nFirst )
|
|
return true;
|
|
}
|
|
}
|
|
return false;
|
|
}
|
|
|
|
StringRangeEnumerator::Iterator& StringRangeEnumerator::Iterator::operator++()
|
|
{
|
|
if( nRangeIndex >= 0 && nCurrent >= 0 && pEnumerator )
|
|
{
|
|
const StringRangeEnumerator::Range& rRange( pEnumerator->maSequence[nRangeIndex] );
|
|
bool bRangeChange = false;
|
|
if( rRange.nLast < rRange.nFirst )
|
|
{
|
|
// backward range
|
|
if( nCurrent > rRange.nLast )
|
|
nCurrent--;
|
|
else
|
|
bRangeChange = true;
|
|
}
|
|
else
|
|
{
|
|
// forward range
|
|
if( nCurrent < rRange.nLast )
|
|
nCurrent++;
|
|
else
|
|
bRangeChange = true;
|
|
}
|
|
if( bRangeChange )
|
|
{
|
|
nRangeIndex++;
|
|
if( size_t(nRangeIndex) == pEnumerator->maSequence.size() )
|
|
{
|
|
// reached the end
|
|
nRangeIndex = nCurrent = -1;
|
|
}
|
|
else
|
|
nCurrent = pEnumerator->maSequence[nRangeIndex].nFirst;
|
|
}
|
|
if( nRangeIndex != -1 && nCurrent != -1 )
|
|
{
|
|
if( ! pEnumerator->checkValue( nCurrent, pPossibleValues ) )
|
|
return ++(*this);
|
|
}
|
|
}
|
|
return *this;
|
|
}
|
|
|
|
|
|
bool StringRangeEnumerator::Iterator::operator==( const Iterator& i_rCompare ) const
|
|
{
|
|
return i_rCompare.pEnumerator == pEnumerator && i_rCompare.nRangeIndex == nRangeIndex && i_rCompare.nCurrent == nCurrent;
|
|
}
|
|
|
|
StringRangeEnumerator::Iterator StringRangeEnumerator::begin( const o3tl::sorted_vector< sal_Int32 >* i_pPossibleValues ) const
|
|
{
|
|
StringRangeEnumerator::Iterator it( this,
|
|
i_pPossibleValues,
|
|
maSequence.empty() ? -1 : 0,
|
|
maSequence.empty() ? -1 : maSequence[0].nFirst );
|
|
if( ! checkValue(*it, i_pPossibleValues ) )
|
|
++it;
|
|
return it;
|
|
}
|
|
|
|
StringRangeEnumerator::Iterator StringRangeEnumerator::end( const o3tl::sorted_vector< sal_Int32 >* i_pPossibleValues ) const
|
|
{
|
|
return StringRangeEnumerator::Iterator( this, i_pPossibleValues, -1, -1 );
|
|
}
|
|
|
|
bool StringRangeEnumerator::getRangesFromString( std::u16string_view i_rPageRange,
|
|
std::vector< sal_Int32 >& o_rPageVector,
|
|
sal_Int32 i_nMinNumber,
|
|
sal_Int32 i_nMaxNumber,
|
|
sal_Int32 i_nLogicalOffset,
|
|
o3tl::sorted_vector< sal_Int32 > const * i_pPossibleValues
|
|
)
|
|
{
|
|
o_rPageVector.clear();
|
|
|
|
StringRangeEnumerator aEnum( i_rPageRange, i_nMinNumber, i_nMaxNumber, i_nLogicalOffset ) ;
|
|
|
|
//Even if the input range wasn't completely valid, return what ranges could
|
|
//be extracted from the input.
|
|
o_rPageVector.reserve( static_cast< size_t >( aEnum.size() ) );
|
|
for( StringRangeEnumerator::Iterator it = aEnum.begin( i_pPossibleValues );
|
|
it != aEnum.end( i_pPossibleValues ); ++it )
|
|
{
|
|
o_rPageVector.push_back( *it );
|
|
}
|
|
|
|
return aEnum.mbValidInput;
|
|
}
|
|
|
|
/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
|