Adding upstream version 4:7.4.7.upstream/4%7.4.7upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 243 insertions, 0 deletions

diff --git a/comphelper/source/misc/proxyaggregation.cxx b/comphelper/source/misc/proxyaggregation.cxx
new file mode 100644
index 000000000..db580bea4
--- /dev/null
+++ b/comphelper/source/misc/proxyaggregation.cxx
@@ -0,0 +1,243 @@
+/* -*- 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 .
+ */
+
+#include <sal/config.h>
+
+#include <cassert>
+
+#include <comphelper/proxyaggregation.hxx>
+#include <com/sun/star/reflection/ProxyFactory.hpp>
+
+
+namespace comphelper
+{
+
+
+    using namespace ::com::sun::star::uno;
+    using namespace ::com::sun::star::lang;
+    using namespace ::com::sun::star::reflection;
+
+    OProxyAggregation::OProxyAggregation( const Reference< XComponentContext >& _rxContext )
+        :m_xContext( _rxContext )
+    {
+    }
+
+
+    void OProxyAggregation::baseAggregateProxyFor( const Reference< XInterface >& _rxComponent, oslInterlockedCount& _rRefCount,
+            ::cppu::OWeakObject& _rDelegator )
+    {
+        // first a factory for the proxy
+        Reference< XProxyFactory > xFactory = ProxyFactory::create( m_xContext );
+
+        // then the proxy itself
+        { // i36686 OJ: achieve the destruction of the temporary -> otherwise it leads to _rRefCount -= 2
+            m_xProxyAggregate = xFactory->createProxy( _rxComponent );
+        }
+        if ( m_xProxyAggregate.is() )
+            m_xProxyAggregate->queryAggregation( cppu::UnoType<decltype(m_xProxyTypeAccess)>::get() ) >>= m_xProxyTypeAccess;
+
+        // aggregate the proxy
+        osl_atomic_increment( &_rRefCount );
+        if ( m_xProxyAggregate.is() )
+        {
+            // At this point in time, the proxy has a ref count of exactly two - in m_xControlContextProxy,
+            // and in m_xProxyTypeAccess.
+            // Remember to _not_ reset these members unless the delegator of the proxy has been reset, too!
+            m_xProxyAggregate->setDelegator( _rDelegator );
+        }
+        osl_atomic_decrement( &_rRefCount );
+    }
+
+
+    Any SAL_CALL OProxyAggregation::queryAggregation( const Type& _rType )
+    {
+        return m_xProxyAggregate.is() ? m_xProxyAggregate->queryAggregation( _rType ) : Any();
+    }
+
+
+    Sequence< Type > SAL_CALL OProxyAggregation::getTypes(  )
+    {
+        Sequence< Type > aTypes;
+        if ( m_xProxyAggregate.is() )
+        {
+            if ( m_xProxyTypeAccess.is() )
+                aTypes = m_xProxyTypeAccess->getTypes();
+        }
+        return aTypes;
+    }
+
+
+    OProxyAggregation::~OProxyAggregation()
+    {
+        if ( m_xProxyAggregate.is() )
+            m_xProxyAggregate->setDelegator( nullptr );
+        m_xProxyAggregate.clear();
+        m_xProxyTypeAccess.clear();
+            // this should remove the _two_only_ "real" references (means not delegated to
+            // ourself) to this proxy, and thus delete it
+    }
+
+    OComponentProxyAggregationHelper::OComponentProxyAggregationHelper( const Reference< XComponentContext >& _rxContext,
+        ::cppu::OBroadcastHelper& _rBHelper )
+        :OProxyAggregation( _rxContext )
+        ,m_rBHelper( _rBHelper )
+    {
+        OSL_ENSURE( _rxContext.is(), "OComponentProxyAggregationHelper::OComponentProxyAggregationHelper: invalid arguments!" );
+    }
+
+
+    void OComponentProxyAggregationHelper::componentAggregateProxyFor(
+        const Reference< XComponent >& _rxComponent, oslInterlockedCount& _rRefCount,
+        ::cppu::OWeakObject& _rDelegator )
+    {
+        OSL_ENSURE( _rxComponent.is(), "OComponentProxyAggregationHelper::componentAggregateProxyFor: invalid inner component!" );
+        m_xInner = _rxComponent;
+
+        // aggregate a proxy for the object
+        baseAggregateProxyFor( m_xInner, _rRefCount, _rDelegator );
+
+        // add as event listener to the inner context, because we want to be notified of disposals
+        osl_atomic_increment( &_rRefCount );
+        {
+            if ( m_xInner.is() )
+                m_xInner->addEventListener( this );
+        }
+        osl_atomic_decrement( &_rRefCount );
+    }
+
+
+    Any SAL_CALL OComponentProxyAggregationHelper::queryInterface( const Type& _rType )
+    {
+        Any aReturn( BASE::queryInterface( _rType ) );
+        if ( !aReturn.hasValue() )
+            aReturn = OProxyAggregation::queryAggregation( _rType );
+        return aReturn;
+    }
+
+
+    IMPLEMENT_FORWARD_XTYPEPROVIDER2( OComponentProxyAggregationHelper, BASE, OProxyAggregation )
+
+
+    OComponentProxyAggregationHelper::~OComponentProxyAggregationHelper( )
+    {
+        OSL_ENSURE( m_rBHelper.bDisposed, "OComponentProxyAggregationHelper::~OComponentProxyAggregationHelper: you should dispose your derived class in the dtor, if necessary!" );
+            // if this asserts, add the following to your derived class dtor:
+
+            // if ( !m_rBHelper.bDisposed )
+            // {
+            //   acquire(); // to prevent duplicate dtor calls
+            //   dispose();
+            // }
+
+        m_xInner.clear();
+    }
+
+
+    void SAL_CALL OComponentProxyAggregationHelper::disposing( const EventObject& _rSource )
+    {
+        if ( _rSource.Source == m_xInner )
+        {   // it's our inner context which is dying -> dispose ourself
+            if ( !m_rBHelper.bDisposed && !m_rBHelper.bInDispose )
+            {   // (if necessary only, of course)
+                dispose();
+            }
+        }
+    }
+
+
+    void SAL_CALL OComponentProxyAggregationHelper::dispose()
+    {
+        ::osl::MutexGuard aGuard( m_rBHelper.rMutex );
+
+        // dispose our inner context
+        // before we do this, remove ourself as listener - else in disposing( EventObject ), we
+        // would dispose ourself a second time
+        if ( m_xInner.is() )
+        {
+            m_xInner->removeEventListener( this );
+            m_xInner->dispose();
+            m_xInner.clear();
+        }
+    }
+
+    OComponentProxyAggregation::OComponentProxyAggregation( const Reference< XComponentContext >& _rxContext,
+            const Reference< XComponent >& _rxComponent )
+        :WeakComponentImplHelperBase( m_aMutex )
+        ,OComponentProxyAggregationHelper( _rxContext, rBHelper )
+    {
+        OSL_ENSURE( _rxComponent.is(), "OComponentProxyAggregation::OComponentProxyAggregation: accessible is no XComponent!" );
+        if ( _rxComponent.is() )
+            componentAggregateProxyFor( _rxComponent, m_refCount, *this );
+    }
+
+
+    OComponentProxyAggregation::~OComponentProxyAggregation()
+    {
+        if ( !rBHelper.bDisposed )
+        {
+            acquire();  // to prevent duplicate dtor calls
+            dispose();
+        }
+    }
+
+
+    IMPLEMENT_FORWARD_XINTERFACE2( OComponentProxyAggregation, WeakComponentImplHelperBase, OComponentProxyAggregationHelper )
+
+
+    IMPLEMENT_GET_IMPLEMENTATION_ID( OComponentProxyAggregation )
+
+
+    Sequence< Type > SAL_CALL OComponentProxyAggregation::getTypes(  )
+    {
+        return comphelper::concatSequences(
+                OComponentProxyAggregationHelper::getTypes(),
+                // append XComponent, coming from WeakComponentImplHelperBase
+                Sequence { cppu::UnoType<XComponent>::get() });
+    }
+
+
+    void SAL_CALL OComponentProxyAggregation::disposing( const EventObject& _rSource )
+    {
+        // Simply disambiguate---this is necessary for MSVC to distinguish
+        // "disposing(EventObject)" from "disposing()"; but it is also a good
+        // place to check for recursive calls that would be caused by an object
+        // being registered as an XEventListener at itself (cf. rhbz#928568):
+        assert(_rSource.Source != static_cast< cppu::OWeakObject * >(this));
+        OComponentProxyAggregationHelper::disposing( _rSource );
+    }
+
+
+    void SAL_CALL OComponentProxyAggregation::disposing()
+    {
+        // call the dispose-functionality of the base, which will dispose our aggregated component
+        OComponentProxyAggregationHelper::dispose();
+    }
+
+
+    void SAL_CALL OComponentProxyAggregation::dispose()
+    {
+        // simply disambiguate
+        WeakComponentImplHelperBase::dispose();
+    }
+
+
+}   // namespace comphelper
+
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */