diff options
Diffstat (limited to 'sd/source/ui/slidesorter/cache/SlsCacheConfiguration.cxx')
-rw-r--r-- | sd/source/ui/slidesorter/cache/SlsCacheConfiguration.cxx | 144 |
1 files changed, 144 insertions, 0 deletions
diff --git a/sd/source/ui/slidesorter/cache/SlsCacheConfiguration.cxx b/sd/source/ui/slidesorter/cache/SlsCacheConfiguration.cxx new file mode 100644 index 000000000..fd08c7627 --- /dev/null +++ b/sd/source/ui/slidesorter/cache/SlsCacheConfiguration.cxx @@ -0,0 +1,144 @@ +/* -*- 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 "SlsCacheConfiguration.hxx" +#include <vcl/svapp.hxx> + +#include <comphelper/processfactory.hxx> +#include <comphelper/propertysequence.hxx> +#include <com/sun/star/lang/XMultiServiceFactory.hpp> +#include <com/sun/star/container/XHierarchicalNameAccess.hpp> +#include <com/sun/star/container/XNameAccess.hpp> +#include <com/sun/star/configuration/theDefaultProvider.hpp> + +using namespace ::com::sun::star; +using namespace ::com::sun::star::uno; + +namespace sd::slidesorter::cache { + +namespace +{ + typedef std::shared_ptr<CacheConfiguration> CacheConfigSharedPtr; + CacheConfigSharedPtr& theInstance() + { + static CacheConfigSharedPtr SINGLETON; + return SINGLETON; + } +} + +std::weak_ptr<CacheConfiguration> CacheConfiguration::mpWeakInstance; + +std::shared_ptr<CacheConfiguration> CacheConfiguration::Instance() +{ + SolarMutexGuard aSolarGuard; + CacheConfigSharedPtr &rInstancePtr = theInstance(); + if (!rInstancePtr) + { + // Maybe somebody else kept a previously created instance alive. + if ( ! mpWeakInstance.expired()) + rInstancePtr = std::shared_ptr<CacheConfiguration>(mpWeakInstance); + if (!rInstancePtr) + { + // We have to create a new instance. + rInstancePtr.reset(new CacheConfiguration()); + mpWeakInstance = rInstancePtr; + // Prepare to release this instance in the near future. + rInstancePtr->m_ReleaseTimer.SetInvokeHandler( + LINK(rInstancePtr.get(),CacheConfiguration,TimerCallback)); + rInstancePtr->m_ReleaseTimer.SetTimeout(5000 /* 5s */); + rInstancePtr->m_ReleaseTimer.Start(); + } + } + return rInstancePtr; +} + +CacheConfiguration::CacheConfiguration() + : m_ReleaseTimer("sd::CacheConfiguration maReleaseTimer") +{ + // Get the cache size from configuration. + try + { + // Obtain access to the configuration. + Reference<lang::XMultiServiceFactory> xProvider = + configuration::theDefaultProvider::get( ::comphelper::getProcessComponentContext() ); + + // Obtain access to Impress configuration. + Sequence<Any> aCreationArguments(comphelper::InitAnyPropertySequence( + { + {"nodepath", Any(OUString("/org.openoffice.Office.Impress/"))}, + {"depth", Any(sal_Int32(-1))} + })); + + Reference<XInterface> xRoot (xProvider->createInstanceWithArguments( + "com.sun.star.configuration.ConfigurationAccess", + aCreationArguments)); + if ( ! xRoot.is()) + return; + Reference<container::XHierarchicalNameAccess> xHierarchy (xRoot, UNO_QUERY); + if ( ! xHierarchy.is()) + return; + + // Get the node for the slide sorter preview cache. + mxCacheNode.set( xHierarchy->getByHierarchicalName("MultiPaneGUI/SlideSorter/PreviewCache"), UNO_QUERY); + } + catch (RuntimeException &) + { + } + catch (Exception &) + { + } +} + +Any CacheConfiguration::GetValue (const OUString& rName) +{ + Any aResult; + + if (mxCacheNode != nullptr) + { + try + { + aResult = mxCacheNode->getByName(rName); + } + catch (Exception &) + { + } + } + + return aResult; +} + +IMPL_STATIC_LINK_NOARG(CacheConfiguration, TimerCallback, Timer *, void) +{ + CacheConfigSharedPtr &rInstancePtr = theInstance(); + // Release our reference to the instance. + rInstancePtr.reset(); + // note: if there are no other references to the instance, m_ReleaseTimer + // will be deleted now +} + +void CacheConfiguration::Shutdown() +{ + CacheConfigSharedPtr &rInstancePtr = theInstance(); + rInstancePtr.reset(); + assert(mpWeakInstance.expired()); // ensure m_ReleaseTimer is destroyed +} + +} // end of namespace ::sd::slidesorter::cache + +/* vim:set shiftwidth=4 softtabstop=4 expandtab: */ |