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+/* -*- 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 SD_GLOBAL_RESOURCE_CONTAINER_HXX
+#define SD_GLOBAL_RESOURCE_CONTAINER_HXX
+
+#include "sdmod.hxx"
+#include <memory>
+#include <boost/shared_ptr.hpp>
+#include <com/sun/star/uno/XInterface.hpp>
+
+namespace css = ::com::sun::star;
+
+namespace sd {
+
+class SdGlobalResource
+{
+public:
+ virtual ~SdGlobalResource (void) {};
+};
+
+/** The purpose of this container is to hold references to resources that
+ are globally available to all interested objects and to destroy them
+ when the sd module is destroyed. Examples for resources can be
+ containers of bitmaps or the container of master pages used by the
+ MasterPagesSelector objects in the task panel.
+
+ It works like a singleton in that there is one instance per sd module.
+ Resources can be added (by themselves or their owners) to the
+ container. The main task of the container is the destruction of all
+ resources that have been added to it.
+
+ As you may note, there is no method to get a resource from the
+ container. It is the task of the resource to provide other means of
+ access to it.
+
+ The reason for this design is not to have to change the SdModule
+ destructor every time when there is a new resource. This is done by
+ reversing the dependency between module and resource: the resource knows
+ about the module--this container class to be more precisely--and tells
+ it to destroy the resource when the sd module is at the end of its
+ lifetime.
+*/
+class SdGlobalResourceContainer
+{
+public:
+ static SdGlobalResourceContainer& Instance (void);
+
+ /** Add a resource to the container. The ownership of the resource is
+ transferred to the container. The resource is destroyed when the
+ container is destroyed, i.e. when the sd module is destroyed.
+
+ When in doubt, use the shared_ptr variant of this method.
+ */
+ void AddResource (::std::auto_ptr<SdGlobalResource> pResource);
+
+ /** Add a resource to the container. By using a shared_ptr and
+ releasing it only when the SgGlobalResourceContainer is destroyed
+ the given resource is kept alive at least that long. When at the
+ time of the destruction of SgGlobalResourceContainer no other
+ references exist the resource is destroyed as well.
+ */
+ void AddResource (::boost::shared_ptr<SdGlobalResource> pResource);
+
+ /** Add a resource that is implemented as UNO object. Destruction
+ (when the sd modules is unloaded) is done by a) calling dispose()
+ when the XComponent is supported and by b) releasing the reference.
+ */
+ void AddResource (const ::css::uno::Reference<css::uno::XInterface>& rxResource);
+
+protected:
+ friend class ::SdModule;
+ friend class ::std::auto_ptr<SdGlobalResourceContainer>;
+
+ class Implementation;
+ ::std::auto_ptr<Implementation> mpImpl;
+
+ SdGlobalResourceContainer (void);
+ ~SdGlobalResourceContainer (void);
+};
+
+} // end of namespace sd
+
+#endif
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */