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/* -*- 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 <vcl/quickselectionengine.hxx>
#include <vcl/event.hxx>
#include <vcl/timer.hxx>
#include <vcl/i18nhelp.hxx>
#include <vcl/svapp.hxx>
#include <vcl/settings.hxx>
#include <sal/log.hxx>
#include <optional>
namespace vcl
{
struct QuickSelectionEngine_Data
{
ISearchableStringList& rEntryList;
OUString sCurrentSearchString;
::std::optional< sal_Unicode > aSingleSearchChar;
Timer aSearchTimeout;
explicit QuickSelectionEngine_Data( ISearchableStringList& _entryList )
:rEntryList( _entryList )
,sCurrentSearchString()
,aSingleSearchChar()
,aSearchTimeout()
{
aSearchTimeout.SetTimeout( 2500 );
aSearchTimeout.SetInvokeHandler( LINK( this, QuickSelectionEngine_Data, SearchStringTimeout ) );
aSearchTimeout.SetDebugName( "vcl::QuickSelectionEngine_Data aSearchTimeout" );
}
~QuickSelectionEngine_Data()
{
aSearchTimeout.Stop();
}
DECL_LINK( SearchStringTimeout, Timer*, void );
};
namespace
{
void lcl_reset( QuickSelectionEngine_Data& _data )
{
_data.sCurrentSearchString.clear();
_data.aSingleSearchChar.reset();
_data.aSearchTimeout.Stop();
}
}
IMPL_LINK_NOARG( QuickSelectionEngine_Data, SearchStringTimeout, Timer*, void )
{
lcl_reset( *this );
}
static StringEntryIdentifier findMatchingEntry( const OUString& _searchString, QuickSelectionEngine_Data const & _engineData )
{
const vcl::I18nHelper& rI18nHelper = Application::GetSettings().GetLocaleI18nHelper();
// TODO: do we really need the Window's settings here? The original code used it ...
OUString 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 ) )
break;
pSearchEntry = _engineData.rEntryList.NextEntry( pSearchEntry, sEntryText );
if ( pSearchEntry == pStartedWith )
pSearchEntry = nullptr;
}
return pSearchEntry;
}
QuickSelectionEngine::QuickSelectionEngine( ISearchableStringList& _entryList )
:m_pData( new QuickSelectionEngine_Data( _entryList ) )
{
}
QuickSelectionEngine::~QuickSelectionEngine()
{
}
bool QuickSelectionEngine::HandleKeyEvent( const KeyEvent& _keyEvent )
{
sal_Unicode c = _keyEvent.GetCharCode();
if ( ( c >= 32 ) && ( c != 127 ) && !_keyEvent.GetKeyCode().IsMod2() )
{
m_pData->sCurrentSearchString += OUStringChar(c);
SAL_INFO( "vcl", "QuickSelectionEngine::HandleKeyEvent: searching for " << m_pData->sCurrentSearchString );
if ( m_pData->sCurrentSearchString.getLength() == 1 )
{ // first character in the search -> remember
m_pData->aSingleSearchChar = c;
}
else if ( m_pData->sCurrentSearchString.getLength() > 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();
}
OUString aSearchTemp( m_pData->sCurrentSearchString );
StringEntryIdentifier pMatchingEntry = findMatchingEntry( aSearchTemp, *m_pData );
SAL_INFO( "vcl", "QuickSelectionEngine::HandleKeyEvent: found " << pMatchingEntry );
if ( !pMatchingEntry && (aSearchTemp.getLength() > 1) && !!m_pData->aSingleSearchChar )
{
// if there's only one letter in the search string, use a different search mode
aSearchTemp = OUString(*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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