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/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
/*************************************************************************
* 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.
************************************************************************/
#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", rtl::OUStringToOString(m_pData->sCurrentSearchString, RTL_TEXTENCODING_UTF8).getStr() );
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
//........................................................................
/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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