sd/source/ui/slidesorter/cache/SlsCacheConfiguration.cxx

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  30
  31 // MARKER(update_precomp.py): autogen include statement, do not remove
  32 #include "precompiled_sd.hxx"
  33
  34 #include "SlsCacheConfiguration.hxx"
  35 #include <vos/mutex.hxx>
  36 #include <vcl/svapp.hxx>
  37
  38 #include <comphelper/processfactory.hxx>
  39 #include <com/sun/star/lang/XMultiServiceFactory.hpp>
  40 #include <com/sun/star/container/XHierarchicalNameAccess.hpp>
  41 #ifndef _COM_SUN_STAR_CONTAINER_PROPERTYVALUE_HPP_
  42 #include <com/sun/star/beans/PropertyValue.hpp>
  43 #endif
  44
  45 using namespace ::com::sun::star;
  46 using namespace ::com::sun::star::uno;
  47
  48 namespace sd { namespace slidesorter { namespace cache {
  49
  50 ::boost::shared_ptr<CacheConfiguration> CacheConfiguration::mpInstance;
  51 ::boost::weak_ptr<CacheConfiguration> CacheConfiguration::mpWeakInstance;
  52 Timer CacheConfiguration::maReleaseTimer;
  53
  54
  55
  56 ::boost::shared_ptr<CacheConfiguration> CacheConfiguration::Instance (void)
  57 {
  58     ::vos::OGuard aSolarGuard (Application::GetSolarMutex());
  59     if (mpInstance.get() == NULL)
  60     {
  61         // Maybe somebody else kept a previously created instance alive.
  62         if ( ! mpWeakInstance.expired())
  63             mpInstance = ::boost::shared_ptr<CacheConfiguration>(mpWeakInstance);
  64         if (mpInstance.get() == NULL)
  65         {
  66             // We have to create a new instance.
  67             mpInstance.reset(new CacheConfiguration());
  68             mpWeakInstance = mpInstance;
  69             // Prepare to release this instance in the near future.
  70             maReleaseTimer.SetTimeoutHdl(
  71                 LINK(mpInstance.get(),CacheConfiguration,TimerCallback));
  72             maReleaseTimer.SetTimeout(5000 /* 5s */);
  73             maReleaseTimer.Start();
  74         }
  75     }
  76     return mpInstance;
  77 }
  78
  79
  80
  81
  82 CacheConfiguration::CacheConfiguration (void)
  83 {
  84     // Get the cache size from configuration.
  85     const ::rtl::OUString sConfigurationProviderServiceName(
  86         RTL_CONSTASCII_USTRINGPARAM(
  87             "com.sun.star.configuration.ConfigurationProvider"));
  88     const ::rtl::OUString sPathToImpressConfigurationRoot(
  89         RTL_CONSTASCII_USTRINGPARAM("/org.openoffice.Office.Impress/"));
  90     const ::rtl::OUString sPathToNode(
  91         RTL_CONSTASCII_USTRINGPARAM(
  92             "MultiPaneGUI/SlideSorter/PreviewCache"));
  93
  94     try
  95     {
  96         do
  97         {
  98             // Obtain access to the configuration.
  99             Reference<lang::XMultiServiceFactory> xProvider (
 100                 ::comphelper::getProcessServiceFactory()->createInstance(
 101                     sConfigurationProviderServiceName),
 102                 UNO_QUERY);
 103             if ( ! xProvider.is())
 104                 break;
 105
 106             // Obtain access to Impress configuration.
 107             Sequence<Any> aCreationArguments(3);
 108             aCreationArguments[0] = makeAny(beans::PropertyValue(
 109                 ::rtl::OUString(
 110                     RTL_CONSTASCII_USTRINGPARAM("nodepath")),
 111                 0,
 112                 makeAny(sPathToImpressConfigurationRoot),
 113                 beans::PropertyState_DIRECT_VALUE));
 114             aCreationArguments[1] = makeAny(beans::PropertyValue(
 115                 ::rtl::OUString(RTL_CONSTASCII_USTRINGPARAM("depth")),
 116                 0,
 117                 makeAny((sal_Int32)-1),
 118                 beans::PropertyState_DIRECT_VALUE));
 119             aCreationArguments[2] = makeAny(beans::PropertyValue(
 120                 ::rtl::OUString(RTL_CONSTASCII_USTRINGPARAM("lazywrite")),
 121                 0,
 122                 makeAny(true),
 123                 beans::PropertyState_DIRECT_VALUE));
 124             ::rtl::OUString sAccessService (::rtl::OUString(RTL_CONSTASCII_USTRINGPARAM(
 125                 "com.sun.star.configuration.ConfigurationAccess")));
 126             Reference<XInterface> xRoot (xProvider->createInstanceWithArguments(
 127                 sAccessService, aCreationArguments));
 128             if ( ! xRoot.is())
 129                 break;
 130             Reference<container::XHierarchicalNameAccess> xHierarchy (xRoot, UNO_QUERY);
 131             if ( ! xHierarchy.is())
 132                 break;
 133
 134             // Get the node for the slide sorter preview cache.
 135             mxCacheNode = Reference<container::XNameAccess>(
 136                 xHierarchy->getByHierarchicalName(sPathToNode),
 137                 UNO_QUERY);
 138         }
 139         while (false);
 140     }
 141     catch (RuntimeException aException)
 142     {
 143         (void)aException;
 144     }
 145     catch (Exception aException)
 146     {
 147         (void)aException;
 148     }
 149 }
 150
 151
 152
 153
 154 Any CacheConfiguration::GetValue (const ::rtl::OUString& rName)
 155 {
 156     Any aResult;
 157
 158     if (mxCacheNode != NULL)
 159     {
 160         try
 161         {
 162             aResult = mxCacheNode->getByName(rName);
 163         }
 164         catch (Exception aException)
 165         {
 166             (void)aException;
 167         }
 168     }
 169
 170     return aResult;
 171 }
 172
 173
 174
 175
 176 IMPL_LINK(CacheConfiguration,TimerCallback, Timer*,EMPTYARG)
 177 {
 178     // Release out reference to the instance.
 179     mpInstance.reset();
 180     return 0;
 181 }
 182
 183
 184 } } } // end of namespace ::sd::slidesorter::cache