Line data    Source code

       1             : /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
       2             : /*
       3             :  * This file is part of the LibreOffice project.
       4             :  *
       5             :  * This Source Code Form is subject to the terms of the Mozilla Public
       6             :  * License, v. 2.0. If a copy of the MPL was not distributed with this
       7             :  * file, You can obtain one at http://mozilla.org/MPL/2.0/.
       8             :  *
       9             :  * This file incorporates work covered by the following license notice:
      10             :  *
      11             :  *   Licensed to the Apache Software Foundation (ASF) under one or more
      12             :  *   contributor license agreements. See the NOTICE file distributed
      13             :  *   with this work for additional information regarding copyright
      14             :  *   ownership. The ASF licenses this file to you under the Apache
      15             :  *   License, Version 2.0 (the "License"); you may not use this file
      16             :  *   except in compliance with the License. You may obtain a copy of
      17             :  *   the License at http://www.apache.org/licenses/LICENSE-2.0 .
      18             :  */
      19             : 
      20             : #include "formulaparserpool.hxx"
      21             : #include <com/sun/star/beans/XPropertySet.hpp>
      22             : #include <com/sun/star/container/XContentEnumerationAccess.hpp>
      23             : #include <com/sun/star/lang/XComponent.hpp>
      24             : #include <com/sun/star/lang/XSingleComponentFactory.hpp>
      25             : #include <com/sun/star/sheet/XFilterFormulaParser.hpp>
      26             : #include <rtl/instance.hxx>
      27             : #include <comphelper/processfactory.hxx>
      28             : #include <sfx2/objsh.hxx>
      29             : #include "document.hxx"
      30             : 
      31             : using namespace ::com::sun::star::beans;
      32             : using namespace ::com::sun::star::container;
      33             : using namespace ::com::sun::star::lang;
      34             : using namespace ::com::sun::star::sheet;
      35             : using namespace ::com::sun::star::uno;
      36             : 
      37             : namespace {
      38             : 
      39           0 : class ScParserFactoryMap
      40             : {
      41             : public:
      42             :     explicit            ScParserFactoryMap();
      43             : 
      44             :     Reference< XFormulaParser > createFormulaParser(
      45             :                             const Reference< XComponent >& rxComponent,
      46             :                             const OUString& rNamespace );
      47             : 
      48             : private:
      49             :     typedef std::unordered_map<
      50             :         OUString, Reference< XSingleComponentFactory >,
      51             :         OUStringHash, std::equal_to< OUString > > FactoryMap;
      52             : 
      53             :     Reference< XComponentContext > mxContext;   /// Global component context.
      54             :     FactoryMap          maFactories;            /// All parser factories, mapped by formula namespace.
      55             : };
      56             : 
      57           0 : ScParserFactoryMap::ScParserFactoryMap() :
      58           0 :     mxContext( ::comphelper::getProcessComponentContext() )
      59             : {
      60           0 :     if( mxContext.is() ) try
      61             :     {
      62             :         // enumerate all implementations of the FormulaParser service
      63           0 :         Reference< XContentEnumerationAccess > xFactoryEA( mxContext->getServiceManager(), UNO_QUERY_THROW );
      64           0 :         Reference< XEnumeration > xEnum( xFactoryEA->createContentEnumeration( OUString( "com.sun.star.sheet.FilterFormulaParser" ) ), UNO_SET_THROW );
      65           0 :         while( xEnum->hasMoreElements() ) try // single try/catch for every element
      66             :         {
      67             :             // create an instance of the formula parser implementation
      68           0 :             Reference< XSingleComponentFactory > xCompFactory( xEnum->nextElement(), UNO_QUERY_THROW );
      69           0 :             Reference< XFilterFormulaParser > xParser( xCompFactory->createInstanceWithContext( mxContext ), UNO_QUERY_THROW );
      70             : 
      71             :             // store factory in the map
      72           0 :             OUString aNamespace = xParser->getSupportedNamespace();
      73           0 :             if( !aNamespace.isEmpty() )
      74           0 :                 maFactories[ aNamespace ] = xCompFactory;
      75             :         }
      76           0 :         catch( Exception& )
      77             :         {
      78           0 :         }
      79             :     }
      80           0 :     catch( Exception& )
      81             :     {
      82             :     }
      83           0 : }
      84             : 
      85           0 : Reference< XFormulaParser > ScParserFactoryMap::createFormulaParser(
      86             :         const Reference< XComponent >& rxComponent, const OUString& rNamespace )
      87             : {
      88           0 :     Reference< XFormulaParser > xParser;
      89           0 :     FactoryMap::const_iterator aIt = maFactories.find( rNamespace );
      90           0 :     if( aIt != maFactories.end() ) try
      91             :     {
      92           0 :         Sequence< Any > aArgs( 1 );
      93           0 :         aArgs[ 0 ] <<= rxComponent;
      94           0 :         xParser.set( aIt->second->createInstanceWithArgumentsAndContext( aArgs, mxContext ), UNO_QUERY_THROW );
      95             :     }
      96           0 :     catch( Exception& )
      97             :     {
      98             :     }
      99           0 :     return xParser;
     100             : }
     101             : 
     102             : struct ScParserFactorySingleton : public ::rtl::Static< ScParserFactoryMap, ScParserFactorySingleton > {};
     103             : 
     104             : } // namespace
     105             : 
     106           0 : ScFormulaParserPool::ScFormulaParserPool( const ScDocument& rDoc ) :
     107           0 :     mrDoc( rDoc )
     108             : {
     109           0 : }
     110             : 
     111           0 : ScFormulaParserPool::~ScFormulaParserPool()
     112             : {
     113           0 : }
     114             : 
     115           0 : bool ScFormulaParserPool::hasFormulaParser( const OUString& rNamespace )
     116             : {
     117           0 :     return getFormulaParser( rNamespace ).is();
     118             : }
     119             : 
     120           0 : Reference< XFormulaParser > ScFormulaParserPool::getFormulaParser( const OUString& rNamespace )
     121             : {
     122             :     // try to find an existing parser entry
     123           0 :     ParserMap::iterator aIt = maParsers.find( rNamespace );
     124           0 :     if( aIt != maParsers.end() )
     125           0 :         return aIt->second;
     126             : 
     127             :     // always create a new entry in the map (even if the following initialization fails)
     128           0 :     Reference< XFormulaParser >& rxParser = maParsers[ rNamespace ];
     129             : 
     130             :     // try to create a new parser object
     131           0 :     if( SfxObjectShell* pDocShell = mrDoc.GetDocumentShell() ) try
     132             :     {
     133           0 :         Reference< XComponent > xComponent( pDocShell->GetModel(), UNO_QUERY_THROW );
     134           0 :         ScParserFactoryMap& rFactoryMap = ScParserFactorySingleton::get();
     135           0 :         rxParser = rFactoryMap.createFormulaParser( xComponent, rNamespace );
     136             :     }
     137           0 :     catch( Exception& )
     138             :     {
     139             :     }
     140           0 :     return rxParser;
     141         156 : }
     142             : 
     143             : /* vim:set shiftwidth=4 softtabstop=4 expandtab: */