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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 )
+ ,aSearchTimeout( "vcl::QuickSelectionEngine_Data aSearchTimeout" )
+ {
+ aSearchTimeout.SetTimeout( 2500 );
+ aSearchTimeout.SetInvokeHandler( LINK( this, QuickSelectionEngine_Data, SearchStringTimeout ) );
+ }
+
+ ~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: */