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/*************************************************************************
*
* 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 COMPHELPER_IDPROPERTYARRAYUSAGEHELPER_HXX
#define COMPHELPER_IDPROPERTYARRAYUSAGEHELPER_HXX
#include <cppuhelper/component.hxx>
#include <osl/mutex.hxx>
#include <cppuhelper/interfacecontainer.hxx>
#include <osl/diagnose.h>
#include <comphelper/stl_types.hxx>
#include <rtl/instance.hxx>
#include <cppuhelper/propshlp.hxx>
namespace cppu { class IPropertyArrayHelper; }
namespace comphelper
{
//************************************************************
// OIdPropertyArrayUsageHelper
//************************************************************
template <typename TYPE> struct OIdPropertyArrayUsageHelperMutex
: public rtl::Static< ::osl::Mutex, OIdPropertyArrayUsageHelperMutex<TYPE> > {};
typedef std::map< sal_Int32, ::cppu::IPropertyArrayHelper*, std::less< sal_Int32 > > OIdPropertyArrayMap;
template <class TYPE>
class OIdPropertyArrayUsageHelper
{
protected:
static sal_Int32 s_nRefCount;
static OIdPropertyArrayMap* s_pMap;
public:
OIdPropertyArrayUsageHelper();
virtual ~OIdPropertyArrayUsageHelper()
{
::osl::MutexGuard aGuard(OIdPropertyArrayUsageHelperMutex<TYPE>::get());
OSL_ENSURE(s_nRefCount > 0, "OIdPropertyArrayUsageHelper::~OIdPropertyArrayUsageHelper : suspicious call : have a refcount of 0 !");
if (!--s_nRefCount)
{
// delete the element
for (OIdPropertyArrayMap::iterator i = s_pMap->begin(); i != s_pMap->end(); ++i)
delete (*i).second;
delete s_pMap;
s_pMap = NULL;
}
}
/** call this in the getInfoHelper method of your derived class. The method returns the array helper of the
class, which is created if neccessary.
*/
::cppu::IPropertyArrayHelper* getArrayHelper(sal_Int32 nId);
protected:
/** used to implement the creation of the array helper which is shared amongst all instances of the class.
This method needs to be implemented in derived classes.
<BR>
The method gets called with Mutex acquired.
<BR>
as long as IPropertyArrayHelper has no virtual destructor, the implementation of ~OPropertyArrayUsageHelper
assumes that you created an ::cppu::OPropertyArrayHelper when deleting s_pProps.
@return an pointer to the newly created array helper. Must not be NULL.
*/
virtual ::cppu::IPropertyArrayHelper* createArrayHelper(sal_Int32 nId) const = 0;
};
//------------------------------------------------------------------
template<class TYPE>
sal_Int32 OIdPropertyArrayUsageHelper< TYPE >::s_nRefCount = 0;
template<class TYPE>
OIdPropertyArrayMap* OIdPropertyArrayUsageHelper< TYPE >::s_pMap = NULL;
//------------------------------------------------------------------
template <class TYPE>
OIdPropertyArrayUsageHelper<TYPE>::OIdPropertyArrayUsageHelper()
{
::osl::MutexGuard aGuard(OIdPropertyArrayUsageHelperMutex<TYPE>::get());
// create the map if necessary
if (s_pMap == NULL)
s_pMap = new OIdPropertyArrayMap();
++s_nRefCount;
}
//------------------------------------------------------------------
template <class TYPE>
::cppu::IPropertyArrayHelper* OIdPropertyArrayUsageHelper<TYPE>::getArrayHelper(sal_Int32 nId)
{
OSL_ENSURE(s_nRefCount, "OIdPropertyArrayUsageHelper::getArrayHelper : suspicious call : have a refcount of 0 !");
::osl::MutexGuard aGuard(OIdPropertyArrayUsageHelperMutex<TYPE>::get());
// do we have the array already?
if (! (*s_pMap)[nId] )
{
(*s_pMap)[nId] = createArrayHelper(nId);
OSL_ENSURE((*s_pMap)[nId], "OIdPropertyArrayUsageHelper::getArrayHelper : createArrayHelper returned nonsense !");
}
return (*s_pMap)[nId];
}
}
#endif // COMPHELPER_IDPROPERTYARRAYUSAGEHELPER_HXX
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