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Diffstat (limited to 'vcl/source/control/quickselectionengine.cxx')
| -rw-r--r-- | vcl/source/control/quickselectionengine.cxx | 183 |
1 files changed, 183 insertions, 0 deletions
diff --git a/vcl/source/control/quickselectionengine.cxx b/vcl/source/control/quickselectionengine.cxx new file mode 100644 index 000000000000..2d32393bf79a --- /dev/null +++ b/vcl/source/control/quickselectionengine.cxx @@ -0,0 +1,183 @@ +/************************************************************************* +* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. +* +* Copyright 2009 by Sun Microsystems, Inc. +* +* 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. +************************************************************************/ + +// MARKER(update_precomp.py): autogen include statement, do not remove +#include "precompiled_vcl.hxx" + +#include "vcl/quickselectionengine.hxx" +#include "vcl/event.hxx" +#include "vcl/timer.hxx" +#include "vcl/i18nhelp.hxx" +#include "vcl/svapp.hxx" + +#include <boost/optional.hpp> + +//........................................................................ +namespace vcl +{ +//........................................................................ + + //==================================================================== + //= QuickSelectionEngine_Data + //==================================================================== + struct QuickSelectionEngine_Data + { + ISearchableStringList& rEntryList; + String sCurrentSearchString; + ::boost::optional< sal_Unicode > aSingleSearchChar; + Timer aSearchTimeout; + + QuickSelectionEngine_Data( ISearchableStringList& _entryList ) + :rEntryList( _entryList ) + ,sCurrentSearchString() + ,aSingleSearchChar() + ,aSearchTimeout() + { + aSearchTimeout.SetTimeout( 2500 ); + aSearchTimeout.SetTimeoutHdl( LINK( this, QuickSelectionEngine_Data, SearchStringTimeout ) ); + } + + ~QuickSelectionEngine_Data() + { + aSearchTimeout.Stop(); + } + + DECL_LINK( SearchStringTimeout, Timer* ); + }; + + //-------------------------------------------------------------------- + namespace + { + static void lcl_reset( QuickSelectionEngine_Data& _data ) + { + _data.sCurrentSearchString.Erase(); + _data.aSingleSearchChar.reset(); + _data.aSearchTimeout.Stop(); + } + } + + //-------------------------------------------------------------------- + IMPL_LINK( QuickSelectionEngine_Data, SearchStringTimeout, Timer*, /*EMPTYARG*/ ) + { + lcl_reset( *this ); + return 1; + } + + //-------------------------------------------------------------------- + static StringEntryIdentifier findMatchingEntry( const String& _searchString, QuickSelectionEngine_Data& _engineData ) + { + const vcl::I18nHelper& rI18nHelper = Application::GetSettings().GetLocaleI18nHelper(); + // TODO: do we really need the Window's settings here? The original code used it ... + + String sEntryText; + // get the "current + 1" entry + StringEntryIdentifier pSearchEntry = _engineData.rEntryList.CurrentEntry( sEntryText ); + if ( pSearchEntry ) + pSearchEntry = _engineData.rEntryList.NextEntry( pSearchEntry, sEntryText ); + // loop 'til we find another matching entry + StringEntryIdentifier pStartedWith = pSearchEntry; + while ( pSearchEntry ) + { + if ( rI18nHelper.MatchString( _searchString, sEntryText ) != 0 ) + break; + + pSearchEntry = _engineData.rEntryList.NextEntry( pSearchEntry, sEntryText ); + if ( pSearchEntry == pStartedWith ) + pSearchEntry = NULL; + } + + return pSearchEntry; + } + + //==================================================================== + //= QuickSelectionEngine + //==================================================================== + //-------------------------------------------------------------------- + QuickSelectionEngine::QuickSelectionEngine( ISearchableStringList& _entryList ) + :m_pData( new QuickSelectionEngine_Data( _entryList ) ) + { + } + + //-------------------------------------------------------------------- + QuickSelectionEngine::~QuickSelectionEngine() + { + } + + //-------------------------------------------------------------------- + bool QuickSelectionEngine::HandleKeyEvent( const KeyEvent& _keyEvent ) + { + xub_Unicode c = _keyEvent.GetCharCode(); + + if ( ( c >= 32 ) && ( c != 127 ) && !_keyEvent.GetKeyCode().IsMod2() ) + { + m_pData->sCurrentSearchString += c; + OSL_TRACE( "QuickSelectionEngine::HandleKeyEvent: searching for %s", ByteString( m_pData->sCurrentSearchString, RTL_TEXTENCODING_UTF8 ).GetBuffer() ); + + if ( m_pData->sCurrentSearchString.Len() == 1 ) + { // first character in the search -> remmeber + m_pData->aSingleSearchChar.reset( c ); + } + else if ( m_pData->sCurrentSearchString.Len() > 1 ) + { + if ( !!m_pData->aSingleSearchChar && ( *m_pData->aSingleSearchChar != c ) ) + // we already have a "single char", but the current one is different -> reset + m_pData->aSingleSearchChar.reset(); + } + + XubString aSearchTemp( m_pData->sCurrentSearchString ); + + StringEntryIdentifier pMatchingEntry = findMatchingEntry( aSearchTemp, *m_pData ); + OSL_TRACE( "QuickSelectionEngine::HandleKeyEvent: found %p", pMatchingEntry ); + if ( !pMatchingEntry && ( aSearchTemp.Len() > 1 ) && !!m_pData->aSingleSearchChar ) + { + // if there's only one letter in the search string, use a different search mode + aSearchTemp = *m_pData->aSingleSearchChar; + pMatchingEntry = findMatchingEntry( aSearchTemp, *m_pData ); + } + + if ( pMatchingEntry ) + { + m_pData->rEntryList.SelectEntry( pMatchingEntry ); + m_pData->aSearchTimeout.Start(); + } + else + { + lcl_reset( *m_pData ); + } + + return true; + } + return false; + } + + //-------------------------------------------------------------------- + void QuickSelectionEngine::Reset() + { + lcl_reset( *m_pData ); + } + +//........................................................................ +} // namespace vcl +//........................................................................ |