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 "SlsCacheConfiguration.hxx"
      21             : #include <osl/mutex.hxx>
      22             : #include <rtl/instance.hxx>
      23             : #include <vcl/svapp.hxx>
      24             : 
      25             : #include <comphelper/processfactory.hxx>
      26             : #include <com/sun/star/lang/XMultiServiceFactory.hpp>
      27             : #include <com/sun/star/container/XHierarchicalNameAccess.hpp>
      28             : #include <com/sun/star/configuration/theDefaultProvider.hpp>
      29             : #include <com/sun/star/beans/PropertyValue.hpp>
      30             : 
      31             : using namespace ::com::sun::star;
      32             : using namespace ::com::sun::star::uno;
      33             : 
      34             : namespace sd { namespace slidesorter { namespace cache {
      35             : 
      36             : namespace
      37             : {
      38             :     typedef ::boost::shared_ptr<CacheConfiguration> CacheConfigSharedPtr;
      39             :     class theInstance :
      40             :         public rtl::Static<CacheConfigSharedPtr, theInstance> {};
      41             : }
      42             : 
      43          38 : ::boost::weak_ptr<CacheConfiguration> CacheConfiguration::mpWeakInstance;
      44          38 : Timer CacheConfiguration::maReleaseTimer;
      45             : 
      46         672 : ::boost::shared_ptr<CacheConfiguration> CacheConfiguration::Instance (void)
      47             : {
      48         672 :     SolarMutexGuard aSolarGuard;
      49         672 :     CacheConfigSharedPtr &rInstancePtr = theInstance::get();
      50         672 :     if (rInstancePtr.get() == NULL)
      51             :     {
      52             :         // Maybe somebody else kept a previously created instance alive.
      53          44 :         if ( ! mpWeakInstance.expired())
      54           0 :             rInstancePtr = ::boost::shared_ptr<CacheConfiguration>(mpWeakInstance);
      55          44 :         if (rInstancePtr.get() == NULL)
      56             :         {
      57             :             // We have to create a new instance.
      58          44 :             rInstancePtr.reset(new CacheConfiguration());
      59          44 :             mpWeakInstance = rInstancePtr;
      60             :             // Prepare to release this instance in the near future.
      61             :             maReleaseTimer.SetTimeoutHdl(
      62          44 :                 LINK(rInstancePtr.get(),CacheConfiguration,TimerCallback));
      63          44 :             maReleaseTimer.SetTimeout(5000 /* 5s */);
      64          44 :             maReleaseTimer.Start();
      65             :         }
      66             :     }
      67         672 :     return rInstancePtr;
      68             : }
      69             : 
      70          44 : CacheConfiguration::CacheConfiguration (void)
      71             : {
      72             :     // Get the cache size from configuration.
      73          44 :     const OUString sPathToImpressConfigurationRoot("/org.openoffice.Office.Impress/");
      74          88 :     const OUString sPathToNode("MultiPaneGUI/SlideSorter/PreviewCache");
      75             : 
      76             :     try
      77             :     {
      78             :         // Obtain access to the configuration.
      79             :         Reference<lang::XMultiServiceFactory> xProvider =
      80          44 :             configuration::theDefaultProvider::get( ::comphelper::getProcessComponentContext() );
      81             : 
      82             :         // Obtain access to Impress configuration.
      83          88 :         Sequence<Any> aCreationArguments(3);
      84          88 :         aCreationArguments[0] = makeAny(beans::PropertyValue(
      85             :             "nodepath",
      86             :             0,
      87             :             makeAny(sPathToImpressConfigurationRoot),
      88          44 :             beans::PropertyState_DIRECT_VALUE));
      89          88 :         aCreationArguments[1] = makeAny(beans::PropertyValue(
      90             :             "depth",
      91             :             0,
      92             :             makeAny((sal_Int32)-1),
      93          44 :             beans::PropertyState_DIRECT_VALUE));
      94          88 :         aCreationArguments[2] = makeAny(beans::PropertyValue(
      95             :             "lazywrite",
      96             :             0,
      97             :             makeAny(true),
      98          44 :             beans::PropertyState_DIRECT_VALUE));
      99             : 
     100          44 :         Reference<XInterface> xRoot (xProvider->createInstanceWithArguments(
     101             :             "com.sun.star.configuration.ConfigurationAccess",
     102          88 :             aCreationArguments));
     103          44 :         if ( ! xRoot.is())
     104           0 :             return;
     105          88 :         Reference<container::XHierarchicalNameAccess> xHierarchy (xRoot, UNO_QUERY);
     106          44 :         if ( ! xHierarchy.is())
     107           0 :             return;
     108             : 
     109             :         // Get the node for the slide sorter preview cache.
     110          44 :         mxCacheNode = Reference<container::XNameAccess>(
     111          44 :             xHierarchy->getByHierarchicalName(sPathToNode),
     112          44 :             UNO_QUERY);
     113             :     }
     114           0 :     catch (RuntimeException &)
     115             :     {
     116             :     }
     117          44 :     catch (Exception &)
     118             :     {
     119          44 :     }
     120             : }
     121             : 
     122         672 : Any CacheConfiguration::GetValue (const OUString& rName)
     123             : {
     124         672 :     Any aResult;
     125             : 
     126         672 :     if (mxCacheNode != NULL)
     127             :     {
     128             :         try
     129             :         {
     130           0 :             aResult = mxCacheNode->getByName(rName);
     131             :         }
     132           0 :         catch (Exception &)
     133             :         {
     134             :         }
     135             :     }
     136             : 
     137         672 :     return aResult;
     138             : }
     139             : 
     140          68 : IMPL_LINK_NOARG(CacheConfiguration, TimerCallback)
     141             : {
     142          34 :     CacheConfigSharedPtr &rInstancePtr = theInstance::get();
     143             :     // Release out reference to the instance.
     144          34 :     rInstancePtr.reset();
     145          34 :     return 0;
     146             : }
     147             : 
     148         114 : } } } // end of namespace ::sd::slidesorter::cache
     149             : 
     150             : /* vim:set shiftwidth=4 softtabstop=4 expandtab: */