b9337e22ce
see https://gerrit.libreoffice.org/#/c/3367/ and Change-Id: I00c96fa77d04b33a6f8c8cd3490dfcd9bdc9e84a for details Change-Id: I199a75bc4042af20817265d5ef85b1134a96ff5a
117 lines
5 KiB
C++
117 lines
5 KiB
C++
/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
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/*
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* This file is part of the LibreOffice project.
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*
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* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/.
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*
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* This file incorporates work covered by the following license notice:
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*
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* Licensed to the Apache Software Foundation (ASF) under one or more
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* contributor license agreements. See the NOTICE file distributed
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* with this work for additional information regarding copyright
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* ownership. The ASF licenses this file to you under the Apache
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* License, Version 2.0 (the "License"); you may not use this file
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* except in compliance with the License. You may obtain a copy of
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* the License at http://www.apache.org/licenses/LICENSE-2.0 .
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*/
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#ifndef COMPHELPER_IDPROPERTYARRAYUSAGEHELPER_HXX
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#define COMPHELPER_IDPROPERTYARRAYUSAGEHELPER_HXX
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#include <cppuhelper/component.hxx>
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#include <osl/mutex.hxx>
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#include <cppuhelper/interfacecontainer.hxx>
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#include <osl/diagnose.h>
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#include <comphelper/stl_types.hxx>
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#include <rtl/instance.hxx>
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#include <cppuhelper/propshlp.hxx>
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namespace cppu { class IPropertyArrayHelper; }
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namespace comphelper
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{
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//************************************************************
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// OIdPropertyArrayUsageHelper
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//************************************************************
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template <typename TYPE> struct OIdPropertyArrayUsageHelperMutex
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: public rtl::Static< ::osl::Mutex, OIdPropertyArrayUsageHelperMutex<TYPE> > {};
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typedef std::map< sal_Int32, ::cppu::IPropertyArrayHelper*, std::less< sal_Int32 > > OIdPropertyArrayMap;
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template <class TYPE>
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class OIdPropertyArrayUsageHelper
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{
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protected:
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static sal_Int32 s_nRefCount;
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static OIdPropertyArrayMap* s_pMap;
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public:
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OIdPropertyArrayUsageHelper();
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virtual ~OIdPropertyArrayUsageHelper()
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{
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::osl::MutexGuard aGuard(OIdPropertyArrayUsageHelperMutex<TYPE>::get());
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OSL_ENSURE(s_nRefCount > 0, "OIdPropertyArrayUsageHelper::~OIdPropertyArrayUsageHelper : suspicious call : have a refcount of 0 !");
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if (!--s_nRefCount)
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{
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// delete the element
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for (OIdPropertyArrayMap::iterator i = s_pMap->begin(); i != s_pMap->end(); ++i)
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delete (*i).second;
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delete s_pMap;
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s_pMap = NULL;
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}
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}
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/** call this in the getInfoHelper method of your derived class. The method returns the array helper of the
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class, which is created if neccessary.
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*/
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::cppu::IPropertyArrayHelper* getArrayHelper(sal_Int32 nId);
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protected:
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/** used to implement the creation of the array helper which is shared amongst all instances of the class.
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This method needs to be implemented in derived classes.
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<BR>
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The method gets called with Mutex acquired.
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<BR>
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as long as IPropertyArrayHelper has no virtual destructor, the implementation of ~OPropertyArrayUsageHelper
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assumes that you created an ::cppu::OPropertyArrayHelper when deleting s_pProps.
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@return an pointer to the newly created array helper. Must not be NULL.
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*/
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virtual ::cppu::IPropertyArrayHelper* createArrayHelper(sal_Int32 nId) const = 0;
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};
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//------------------------------------------------------------------
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template<class TYPE>
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sal_Int32 OIdPropertyArrayUsageHelper< TYPE >::s_nRefCount = 0;
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template<class TYPE>
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OIdPropertyArrayMap* OIdPropertyArrayUsageHelper< TYPE >::s_pMap = NULL;
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//------------------------------------------------------------------
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template <class TYPE>
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OIdPropertyArrayUsageHelper<TYPE>::OIdPropertyArrayUsageHelper()
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{
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::osl::MutexGuard aGuard(OIdPropertyArrayUsageHelperMutex<TYPE>::get());
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// create the map if necessary
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if (s_pMap == NULL)
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s_pMap = new OIdPropertyArrayMap();
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++s_nRefCount;
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}
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//------------------------------------------------------------------
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template <class TYPE>
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::cppu::IPropertyArrayHelper* OIdPropertyArrayUsageHelper<TYPE>::getArrayHelper(sal_Int32 nId)
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{
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OSL_ENSURE(s_nRefCount, "OIdPropertyArrayUsageHelper::getArrayHelper : suspicious call : have a refcount of 0 !");
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::osl::MutexGuard aGuard(OIdPropertyArrayUsageHelperMutex<TYPE>::get());
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// do we have the array already?
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if (! (*s_pMap)[nId] )
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{
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(*s_pMap)[nId] = createArrayHelper(nId);
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OSL_ENSURE((*s_pMap)[nId], "OIdPropertyArrayUsageHelper::getArrayHelper : createArrayHelper returned nonsense !");
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}
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return (*s_pMap)[nId];
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}
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}
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#endif // COMPHELPER_IDPROPERTYARRAYUSAGEHELPER_HXX
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/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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