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       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             : #ifndef INCLUDED_SD_SOURCE_UI_SLIDESORTER_CACHE_SLSCACHECONFIGURATION_HXX
      21             : #define INCLUDED_SD_SOURCE_UI_SLIDESORTER_CACHE_SLSCACHECONFIGURATION_HXX
      22             : 
      23             : #include <com/sun/star/uno/Any.hxx>
      24             : #include <vcl/timer.hxx>
      25             : #include <com/sun/star/container/XNameAccess.hpp>
      26             : #include <boost/shared_ptr.hpp>
      27             : #include <boost/weak_ptr.hpp>
      28             : 
      29             : namespace sd { namespace slidesorter { namespace cache {
      30             : 
      31             : /** A very simple and easy-to-use access to configuration entries regarding
      32             :     the slide sorter cache.
      33             : */
      34          34 : class CacheConfiguration
      35             : {
      36             : public:
      37             :     /** Return an instance to this class.  The reference is released after 5
      38             :         seconds.  Subsequent calls to this function will create a new
      39             :         instance.
      40             :     */
      41             :     static ::boost::shared_ptr<CacheConfiguration> Instance();
      42             : 
      43             :     /** Look up the specified value in
      44             :         MultiPaneGUI/SlideSorter/PreviewCache.   When the specified value
      45             :         does not exist then an empty Any is returned.
      46             :     */
      47             :     ::com::sun::star::uno::Any GetValue (const OUString& rName);
      48             : 
      49             : private:
      50             :     /** When a caller holds a reference after we have released ours we use
      51             :         this weak pointer to avoid creating a new instance.
      52             :     */
      53             :     static ::boost::weak_ptr<CacheConfiguration> mpWeakInstance;
      54             :     static Timer maReleaseTimer;
      55             :     ::com::sun::star::uno::Reference<
      56             :         ::com::sun::star::container::XNameAccess> mxCacheNode;
      57             : 
      58             :     CacheConfiguration();
      59             : 
      60             :     DECL_STATIC_LINK_TYPED(CacheConfiguration, TimerCallback, Timer *, void);
      61             : };
      62             : 
      63             : } } } // end of namespace ::sd::slidesorter::cache
      64             : 
      65             : #endif
      66             : 
      67             : /* vim:set shiftwidth=4 softtabstop=4 expandtab: */