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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 .
*/
#ifndef INCLUDED_COMPHELPER_PROPARRHLP_HXX
#define INCLUDED_COMPHELPER_PROPARRHLP_HXX
#include <comphelper/propagg.hxx>
#include <cppuhelper/propshlp.hxx>
#include <osl/mutex.hxx>
#include <osl/diagnose.h>
#include <rtl/instance.hxx>
namespace comphelper
{
template <typename TYPE> struct OPropertyArrayUsageHelperMutex
: public rtl::Static< ::osl::Mutex, OPropertyArrayUsageHelperMutex<TYPE> > {};
template <class TYPE>
class OPropertyArrayUsageHelper
{
protected:
static sal_Int32 s_nRefCount;
static ::cppu::IPropertyArrayHelper* s_pProps;
public:
OPropertyArrayUsageHelper();
virtual ~OPropertyArrayUsageHelper();
/** call this in the getInfoHelper method of your derived class. The method returns the array helper of the
class, which is created if necessary.
*/
::cppu::IPropertyArrayHelper* getArrayHelper();
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.
@return a pointer to the newly created array helper. Must not be NULL.
*/
virtual ::cppu::IPropertyArrayHelper* createArrayHelper( ) const = 0;
};
/** an OPropertyArrayUsageHelper which will create an OPropertyArrayAggregationHelper
*/
template <class TYPE>
class OAggregationArrayUsageHelper: public OPropertyArrayUsageHelper<TYPE>
{
protected:
/** overwrite this in your derived class. initialize the two sequences with your and your aggregate's
properties.
<BR>
The method gets called with Mutex acquired.
@param _rProps out parameter to be filled with the property descriptions of your own class
@param _rAggregateProps out parameter to be filled with the properties of your aggregate.
*/
virtual void fillProperties(
css::uno::Sequence< css::beans::Property >& /* [out] */ _rProps,
css::uno::Sequence< css::beans::Property >& /* [out] */ _rAggregateProps
) const = 0;
/** creates an OPropertyArrayAggregationHelper filled with properties for which's initialization
fillProperties is called. getInfoService and getFirstAggregateId may be overwritten to determine
the additional parameters of the OPropertyArrayAggregationHelper.
*/
virtual ::cppu::IPropertyArrayHelper* createArrayHelper( ) const;
};
template<class TYPE>
sal_Int32 OPropertyArrayUsageHelper< TYPE >::s_nRefCount = 0;
template<class TYPE>
::cppu::IPropertyArrayHelper* OPropertyArrayUsageHelper< TYPE >::s_pProps = nullptr;
template <class TYPE>
OPropertyArrayUsageHelper<TYPE>::OPropertyArrayUsageHelper()
{
::osl::MutexGuard aGuard(OPropertyArrayUsageHelperMutex<TYPE>::get());
++s_nRefCount;
}
template <class TYPE>
OPropertyArrayUsageHelper<TYPE>::~OPropertyArrayUsageHelper()
{
::osl::MutexGuard aGuard(OPropertyArrayUsageHelperMutex<TYPE>::get());
OSL_ENSURE(s_nRefCount > 0, "OPropertyArrayUsageHelper::~OPropertyArrayUsageHelper : suspicious call : have a refcount of 0 !");
if (!--s_nRefCount)
{
delete s_pProps;
s_pProps = nullptr;
}
}
template <class TYPE>
::cppu::IPropertyArrayHelper* OPropertyArrayUsageHelper<TYPE>::getArrayHelper()
{
OSL_ENSURE(s_nRefCount, "OPropertyArrayUsageHelper::getArrayHelper : suspicious call : have a refcount of 0 !");
if (!s_pProps)
{
::osl::MutexGuard aGuard(OPropertyArrayUsageHelperMutex<TYPE>::get());
if (!s_pProps)
{
s_pProps = createArrayHelper();
OSL_ENSURE(s_pProps, "OPropertyArrayUsageHelper::getArrayHelper : createArrayHelper returned nonsense !");
}
}
return s_pProps;
}
template <class TYPE> inline
::cppu::IPropertyArrayHelper* OAggregationArrayUsageHelper<TYPE>::createArrayHelper() const
{
css::uno::Sequence< css::beans::Property > aProps;
css::uno::Sequence< css::beans::Property > aAggregateProps;
fillProperties(aProps, aAggregateProps);
OSL_ENSURE(aProps.hasElements(), "OAggregationArrayUsageHelper::createArrayHelper : fillProperties returned nonsense !");
return new OPropertyArrayAggregationHelper(aProps, aAggregateProps, nullptr, DEFAULT_AGGREGATE_PROPERTY_ID);
}
}
#endif // INCLUDED_COMPHELPER_PROPARRHLP_HXX
/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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