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+/* -*- 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 .
+ */
+
+#pragma once
+
+#include <config_options.h>
+#include <svtools/svtdllapi.h>
+#include <o3tl/deleter.hxx>
+#include <memory>
+
+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 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 UNLESS_MERGELIBS(SVT_DLLPUBLIC) TemplateFolderCache
+ {
+ private:
+ std::unique_ptr<TemplateFolderCacheImpl, o3tl::default_delete<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 explicitly 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( bool _bAutoStoreState = false );
+ ~TemplateFolderCache( );
+
+ /** determines whether or not the template configuration needs to be updated
+ @return
+ <TRUE/> if the template configuration needs to be updated
+ */
+ bool needsUpdate();
+
+ /** stores the current state of the template folders in the cache */
+ void storeState();
+ };
+
+
+} // namespace svt
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */