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Diffstat (limited to 'vcl/source/edit/xtextedt.cxx')
| -rw-r--r-- | vcl/source/edit/xtextedt.cxx | 227 |
1 files changed, 227 insertions, 0 deletions
diff --git a/vcl/source/edit/xtextedt.cxx b/vcl/source/edit/xtextedt.cxx new file mode 100644 index 000000000..106ad69bf --- /dev/null +++ b/vcl/source/edit/xtextedt.cxx @@ -0,0 +1,227 @@ +/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */ +/* + * This file is part of the LibreOffice project. + * + * This Source Code Form is subject to the terms of the Mozilla Public + * License, v. 2.0. If a copy of the MPL was not distributed with this + * file, You can obtain one at http://mozilla.org/MPL/2.0/. + * + * This file incorporates work covered by the following license notice: + * + * 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 . + */ + +#include <i18nutil/searchopt.hxx> +#include <i18nlangtag/languagetag.hxx> +#include <vcl/textdata.hxx> +#include <vcl/xtextedt.hxx> +#include <vcl/svapp.hxx> +#include <vcl/settings.hxx> +#include <unotools/textsearch.hxx> +#include <com/sun/star/util/SearchFlags.hpp> + +using namespace ::com::sun::star; + +const std::wstring gaGroupChars = L"(){}[]"; + +ExtTextEngine::ExtTextEngine() +{ +} + +ExtTextEngine::~ExtTextEngine() +{ +} + +TextSelection ExtTextEngine::MatchGroup( const TextPaM& rCursor ) const +{ + TextSelection aSel( rCursor ); + const sal_Int32 nPos = rCursor.GetIndex(); + sal_uInt32 nPara = rCursor.GetPara(); + const sal_uInt32 nParas = GetParagraphCount(); + if ( ( nPara < nParas ) && ( nPos < GetTextLen( nPara ) ) ) + { + size_t nMatchIndex = gaGroupChars.find( GetText( rCursor.GetPara() )[ nPos ] ); + if ( nMatchIndex != std::wstring::npos ) + { + if ( ( nMatchIndex % 2 ) == 0 ) + { + // search forwards + sal_Unicode nSC = gaGroupChars[ nMatchIndex ]; + sal_Unicode nEC = gaGroupChars[ nMatchIndex+1 ]; + + sal_Int32 nCur = nPos+1; + sal_uInt16 nLevel = 1; + while ( nLevel && ( nPara < nParas ) ) + { + OUString aStr = GetText( nPara ); + while ( nCur < aStr.getLength() ) + { + if ( aStr[nCur] == nSC ) + nLevel++; + else if ( aStr[nCur] == nEC ) + { + nLevel--; + if ( !nLevel ) + break; // while nCur... + } + nCur++; + } + + if ( nLevel ) + { + nPara++; + nCur = 0; + } + } + if ( nLevel == 0 ) // found + { + aSel.GetStart() = rCursor; + aSel.GetEnd() = TextPaM( nPara, nCur+1 ); + } + } + else + { + // search backwards + sal_Unicode nEC = gaGroupChars[ nMatchIndex ]; + sal_Unicode nSC = gaGroupChars[ nMatchIndex-1 ]; + + sal_Int32 nCur = rCursor.GetIndex()-1; + sal_uInt16 nLevel = 1; + while ( nLevel ) + { + if ( GetTextLen( nPara ) ) + { + OUString aStr = GetText( nPara ); + while ( nCur ) + { + if ( aStr[nCur] == nSC ) + { + nLevel--; + if ( !nLevel ) + break; // while nCur... + } + else if ( aStr[nCur] == nEC ) + nLevel++; + + nCur--; + } + } + + if ( nLevel ) + { + if ( nPara ) + { + nPara--; + nCur = GetTextLen( nPara )-1; // no matter if negative, as if Len() + } + else + break; + } + } + + if ( nLevel == 0 ) // found + { + aSel.GetStart() = rCursor; + ++aSel.GetStart().GetIndex(); // behind the char + aSel.GetEnd() = TextPaM( nPara, nCur ); + } + } + } + } + return aSel; +} + +bool ExtTextEngine::Search( TextSelection& rSel, const i18nutil::SearchOptions& rSearchOptions, bool bForward ) const +{ + TextSelection aSel( rSel ); + aSel.Justify(); + + bool bSearchInSelection = (0 != (rSearchOptions.searchFlag & util::SearchFlags::REG_NOT_BEGINOFLINE) ); + + TextPaM aStartPaM( aSel.GetEnd() ); + if ( aSel.HasRange() && ( ( bSearchInSelection && bForward ) || ( !bSearchInSelection && !bForward ) ) ) + { + aStartPaM = aSel.GetStart(); + } + + bool bFound = false; + sal_uInt32 nEndNode; + + if ( bSearchInSelection ) + nEndNode = bForward ? aSel.GetEnd().GetPara() : aSel.GetStart().GetPara(); + else + nEndNode = bForward ? (GetParagraphCount()-1) : 0; + + const sal_uInt32 nStartNode = aStartPaM.GetPara(); + + i18nutil::SearchOptions aOptions( rSearchOptions ); + aOptions.Locale = Application::GetSettings().GetLanguageTag().getLocale(); + utl::TextSearch aSearcher( utl::TextSearch::UpgradeToSearchOptions2(aOptions) ); + + // iterate over the paragraphs + for ( sal_uInt32 nNode = nStartNode; + bForward ? ( nNode <= nEndNode) : ( nNode >= nEndNode ); + bForward ? nNode++ : nNode-- ) + { + OUString aText = GetText( nNode ); + sal_Int32 nStartPos = 0; + sal_Int32 nEndPos = aText.getLength(); + if ( nNode == nStartNode ) + { + if ( bForward ) + nStartPos = aStartPaM.GetIndex(); + else + nEndPos = aStartPaM.GetIndex(); + } + if ( ( nNode == nEndNode ) && bSearchInSelection ) + { + if ( bForward ) + nEndPos = aSel.GetEnd().GetIndex(); + else + nStartPos = aSel.GetStart().GetIndex(); + } + + if ( bForward ) + bFound = aSearcher.SearchForward( aText, &nStartPos, &nEndPos ); + else + bFound = aSearcher.SearchBackward( aText, &nEndPos, &nStartPos ); + + if ( bFound ) + { + rSel.GetStart().GetPara() = nNode; + rSel.GetStart().GetIndex() = nStartPos; + rSel.GetEnd().GetPara() = nNode; + rSel.GetEnd().GetIndex() = nEndPos; + // Select over the paragraph? + // FIXME This should be max long... + if( nEndPos == -1) + { + if ( (rSel.GetEnd().GetPara()+1) < GetParagraphCount() ) + { + rSel.GetEnd().GetPara()++; + rSel.GetEnd().GetIndex() = 0; + } + else + { + rSel.GetEnd().GetIndex() = nStartPos; + bFound = false; + } + } + + break; + } + + if ( !bForward && !nNode ) // if searching backwards, if nEndNode == 0: + break; + } + + return bFound; +} + +/* vim:set shiftwidth=4 softtabstop=4 expandtab: */ |