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Diffstat (limited to 'svtools/inc/svtools/templatefoldercache.hxx')
| -rw-r--r-- | svtools/inc/svtools/templatefoldercache.hxx | 111 |
1 files changed, 111 insertions, 0 deletions
diff --git a/svtools/inc/svtools/templatefoldercache.hxx b/svtools/inc/svtools/templatefoldercache.hxx new file mode 100644 index 000000000000..9be90a0eaad6 --- /dev/null +++ b/svtools/inc/svtools/templatefoldercache.hxx @@ -0,0 +1,111 @@ +/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */ +/************************************************************************* + * + * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. + * + * Copyright 2000, 2010 Oracle and/or its affiliates. + * + * OpenOffice.org - a multi-platform office productivity suite + * + * This file is part of OpenOffice.org. + * + * OpenOffice.org is free software: you can redistribute it and/or modify + * it under the terms of the GNU Lesser General Public License version 3 + * only, as published by the Free Software Foundation. + * + * OpenOffice.org is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU Lesser General Public License version 3 for more details + * (a copy is included in the LICENSE file that accompanied this code). + * + * You should have received a copy of the GNU Lesser General Public License + * version 3 along with OpenOffice.org. If not, see + * <http://www.openoffice.org/license.html> + * for a copy of the LGPLv3 License. + * + ************************************************************************/ + +#ifndef SFX2_TEMPLATEFOLDERCACHE_HXX +#define SFX2_TEMPLATEFOLDERCACHE_HXX + +#include "svtools/svtdllapi.h" +#include <sal/types.h> + +//......................................................................... +namespace svt +{ +//......................................................................... + + //===================================================================== + //= TemplateFolderCache + //===================================================================== + class TemplateFolderCacheImpl; + /** allows to cache the state of the template directories of OOo + <p>Usually, this class is used together with an instance of a the + <service scope="com.sun.star.frame">DocumentTemplates</service> service. It allows to scan the template folders + of the Office, and updates the configuration so that it reflects the most recent state of the folders.<br/> + As this is an expensive, the TemplateFolderCache has been introduced. It caches the state of the template + folders, and allows to determine if the DocumentTemplates service needs to be invoked to do the (much more expensive) + update.</p> + @example C++ + <listing> + TemplateFolderCache aTemplateFolders; + if ( aTemplateFolders.needsUpdate() ) + { + // store the current state + aCache.storeState(); + + // create the DocumentTemplates instance + Reference< XDocumentTemplates > xTemplates = ...; + + // update the templates configuration + xTemplates->update(); + } + + // do anything which relies on a up-to-date template configuration + </listing> + */ + class SVT_DLLPUBLIC TemplateFolderCache + { + private: + TemplateFolderCacheImpl* m_pImpl; + + public: + /** ctor. + @param _bAutoStoreState + Set this to <TRUE/> if you want the instance to automatically store the state of the template folders upon + destruction.<br/> + If set to <FALSE/>, you would epplicitly need to call <method>storeState</method> to do this.<br/> + If the current state is not known (e.g. because you did not call needsUpdate, which retrieves it), + it is not retrieved in the dtor, regardless of the <arg>_bAutoStoreState</arg> flag. + */ + TemplateFolderCache( sal_Bool _bAutoStoreState = sal_False ); + ~TemplateFolderCache( ); + + /** determines whether or not the template configuration needs to be updated + @param _bForceCheck + set this to <TRUE/> if you want the object to rescan the template folders in every case. The default (<FALSE/>) + means that once the information has been retrieved in a first call, every second call returns the same result + as the first one, even if in the meantime the template folders changed. + @return + <TRUE/> if the template configuration needs to be updated + */ + sal_Bool needsUpdate( sal_Bool _bForceCheck = sal_False ); + + /** stores the current state of the template folders in the cache + @param _bForceRetrieval + if set to <TRUE/>, the current state of the template folders is retrieved again, even if it is already known. + Usually, you set this to <FALSE/>: After calling <method>needsUpdate</method>, the state is know and does not + need to be read again. + */ + void storeState( sal_Bool _bForceRetrieval = sal_False ); + }; + +//......................................................................... +} // namespace svt +//......................................................................... + +#endif // SFX2_TEMPLATEFOLDERCACHE_HXX + +/* vim:set shiftwidth=4 softtabstop=4 expandtab: */ |