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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_PROXYAGGREGATION_HXX
#define INCLUDED_COMPHELPER_PROXYAGGREGATION_HXX
#include <com/sun/star/uno/XAggregation.hpp>
#include <com/sun/star/lang/XMultiServiceFactory.hpp>
#include <com/sun/star/lang/XComponent.hpp>
#include <cppuhelper/implbase1.hxx>
#include <cppuhelper/interfacecontainer.hxx>
#include <cppuhelper/basemutex.hxx>
#include <comphelper/uno3.hxx>
#include <cppuhelper/compbase_ex.hxx>
#include <comphelper/comphelperdllapi.h>
namespace com { namespace sun { namespace star { namespace uno {
class XComponentContext;
} } } }
/* class hierarchy herein:
+-------------------+ helper class for aggregating the proxy to another object
| OProxyAggregation | - not ref counted
+-------------------+ - no UNO implementation, i.e. not derived from XInterface
^ (neither direct nor indirect)
|
|
+----------------------------------+ helper class for aggregating a proxy to an XComponent
| OComponentProxyAggregationHelper | - life time coupling: if the inner component (the "aggregate")
+----------------------------------+ is disposed, the outer (the delegator) is disposed, too, and
^ vice versa
| - UNO based, implementing XEventListener
|
+----------------------------+ component aggregating another XComponent
| OComponentProxyAggregation | - life time coupling as above
+----------------------------+ - ref-counted
- implements an XComponent itself
If you need to
- wrap a foreign object which is a XComponent
=> use OComponentProxyAggregation
- call componentAggregateProxyFor in your ctor
- call implEnsureDisposeInDtor in your dtor
- wrap a foreign object which is a XComponent, but already have ref-counting mechanisms
inherited from somewhere else
=> use OComponentProxyAggregationHelper
- override dispose - don't forget to call the base class' dispose!
- call componentAggregateProxyFor in your ctor
- wrap a foreign object which is no XComponent
=> use OProxyAggregation
- call baseAggregateProxyFor in your ctor
*/
namespace comphelper
{
//= OProxyAggregation
/** helper class for aggregating a proxy for a foreign object
*/
class OProxyAggregation
{
private:
css::uno::Reference< css::uno::XAggregation > m_xProxyAggregate;
css::uno::Reference< css::lang::XTypeProvider > m_xProxyTypeAccess;
css::uno::Reference< css::uno::XComponentContext > m_xContext;
protected:
inline const css::uno::Reference< css::uno::XComponentContext >& getComponentContext()
{
return m_xContext;
}
protected:
OProxyAggregation( const css::uno::Reference< css::uno::XComponentContext >& _rxContext );
~OProxyAggregation();
/// to be called from within your ctor
void baseAggregateProxyFor(
const css::uno::Reference< css::uno::XInterface >& _rxComponent,
oslInterlockedCount& _rRefCount,
::cppu::OWeakObject& _rDelegator
);
// XInterface and XTypeProvider
/// @throws css::uno::RuntimeException
css::uno::Any SAL_CALL queryAggregation( const css::uno::Type& _rType );
/// @throws css::uno::RuntimeException
css::uno::Sequence< css::uno::Type > SAL_CALL getTypes( );
private:
OProxyAggregation( const OProxyAggregation& ) = delete;
OProxyAggregation& operator=( const OProxyAggregation& ) = delete;
};
//= OComponentProxyAggregationHelper
/** a helper class for aggregating a proxy to an XComponent
<p>The object couples the life time of itself and the component: if one of the both
dies (in a sense of being disposed), the other one dies, too.</p>
<p>The class itself does not implement XComponent so you need to forward any XComponent::dispose
calls which your derived class gets to the dispose method of this class.</p>
*/
class COMPHELPER_DLLPUBLIC OComponentProxyAggregationHelper :public ::cppu::ImplHelper1 < css::lang::XEventListener
>
,private OProxyAggregation
{
private:
typedef ::cppu::ImplHelper1 < css::lang::XEventListener
> BASE; // prevents some MSVC problems
protected:
css::uno::Reference< css::lang::XComponent >
m_xInner;
::cppu::OBroadcastHelper& m_rBHelper;
protected:
// OProxyAggregation
using OProxyAggregation::getComponentContext;
// XInterface
css::uno::Any SAL_CALL queryInterface( const css::uno::Type& _rType ) override;
// XTypeProvider
DECLARE_XTYPEPROVIDER( )
protected:
OComponentProxyAggregationHelper(
const css::uno::Reference< css::uno::XComponentContext >& _rxContext,
::cppu::OBroadcastHelper& _rBHelper
);
virtual ~OComponentProxyAggregationHelper( );
/// to be called from within your ctor
void componentAggregateProxyFor(
const css::uno::Reference< css::lang::XComponent >& _rxComponent,
oslInterlockedCount& _rRefCount,
::cppu::OWeakObject& _rDelegator
);
// XEventListener
virtual void SAL_CALL disposing( const css::lang::EventObject& Source ) override;
// XComponent
/// @throws css::uno::RuntimeException
virtual void SAL_CALL dispose() = 0;
private:
OComponentProxyAggregationHelper( const OComponentProxyAggregationHelper& ) = delete;
OComponentProxyAggregationHelper& operator=( const OComponentProxyAggregationHelper& ) = delete;
};
//= OComponentProxyAggregation
class COMPHELPER_DLLPUBLIC OComponentProxyAggregation : public cppu::BaseMutex
,public cppu::WeakComponentImplHelperBase
,public OComponentProxyAggregationHelper
{
protected:
OComponentProxyAggregation(
const css::uno::Reference< css::uno::XComponentContext >& _rxContext,
const css::uno::Reference< css::lang::XComponent >& _rxComponent
);
virtual ~OComponentProxyAggregation() override;
// XInterface
DECLARE_XINTERFACE()
// XTypeProvider
DECLARE_XTYPEPROVIDER()
// OComponentHelper
virtual void SAL_CALL disposing() override;
// XEventListener
virtual void SAL_CALL disposing( const css::lang::EventObject& _rSource ) override;
// XComponent/OComponentProxyAggregationHelper
virtual void SAL_CALL dispose() override;
private:
OComponentProxyAggregation( const OComponentProxyAggregation& ) = delete;
OComponentProxyAggregation& operator=( const OComponentProxyAggregation& ) = delete;
};
} // namespace comphelper
#endif // INCLUDED_COMPHELPER_PROXYAGGREGATION_HXX
/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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