1 /************************************************************************* 2 * 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 4 * 5 * Copyright 2000, 2010 Oracle and/or its affiliates. 6 * 7 * OpenOffice.org - a multi-platform office productivity suite 8 * 9 * This file is part of OpenOffice.org. 10 * 11 * OpenOffice.org is free software: you can redistribute it and/or modify 12 * it under the terms of the GNU Lesser General Public License version 3 13 * only, as published by the Free Software Foundation. 14 * 15 * OpenOffice.org is distributed in the hope that it will be useful, 16 * but WITHOUT ANY WARRANTY; without even the implied warranty of 17 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 18 * GNU Lesser General Public License version 3 for more details 19 * (a copy is included in the LICENSE file that accompanied this code). 20 * 21 * You should have received a copy of the GNU Lesser General Public License 22 * version 3 along with OpenOffice.org. If not, see 23 * <http://www.openoffice.org/license.html> 24 * for a copy of the LGPLv3 License. 25 * 26 ************************************************************************/ 27 28 #ifndef SD_SLIDESORTER_CACHE_CONFIGURATION_HXX 29 #define SD_SLIDESORTER_CACHE_CONFIGURATION_HXX 30 31 #include <com/sun/star/uno/Any.hxx> 32 #include <vcl/timer.hxx> 33 #include <com/sun/star/container/XNameAccess.hpp> 34 #include <boost/shared_ptr.hpp> 35 #include <boost/weak_ptr.hpp> 36 37 namespace sd { namespace slidesorter { namespace cache { 38 39 /** A very simple and easy-to-use access to configuration entries regarding 40 the slide sorter cache. 41 */ 42 class CacheConfiguration 43 { 44 public: 45 /** Return an instance to this class. The reference is released after 5 46 seconds. Subsequent calls to this function will create a new 47 instance. 48 */ 49 static ::boost::shared_ptr<CacheConfiguration> Instance (void); 50 51 /** Look up the specified value in 52 MultiPaneGUI/SlideSorter/PreviewCache. When the specified value 53 does not exist then an empty Any is returned. 54 */ 55 ::com::sun::star::uno::Any GetValue (const ::rtl::OUString& rName); 56 57 private: 58 static ::boost::shared_ptr<CacheConfiguration> mpInstance; 59 /** When a caller holds a reference after we have released ours we use 60 this weak pointer to avoid creating a new instance. 61 */ 62 static ::boost::weak_ptr<CacheConfiguration> mpWeakInstance; 63 static Timer maReleaseTimer; 64 ::com::sun::star::uno::Reference< 65 ::com::sun::star::container::XNameAccess> mxCacheNode; 66 67 CacheConfiguration (void); 68 69 DECL_LINK(TimerCallback, Timer*); 70 }; 71 72 } } } // end of namespace ::sd::slidesorter::cache 73 74 #endif 75