/* -*- 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 .
*/
#pragma once
#include <config_options.h>
#include <cppuhelper/implbase1.hxx>
#include <cppuhelper/interfacecontainer.h>
#include <cppuhelper/basemutex.hxx>
#include <comphelper/uno3.hxx>
#include <cppuhelper/compbase_ex.hxx>
namespace com::sun::star::uno {
class XComponentContext;
}
namespace com::sun::star::uno { class XAggregation; }
namespace com::sun::star::lang { class XComponent; }
/* 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 accessibility
{
//= 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 :
const css::uno::Reference< css::uno::XComponentContext >& getComponentContext() const
{
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 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 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 accessibility
/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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