650 lines
20 KiB
C++
650 lines
20 KiB
C++
/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
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/*
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* This file is part of the LibreOffice project.
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*
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* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/.
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*
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* This file incorporates work covered by the following license notice:
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*
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* Licensed to the Apache Software Foundation (ASF) under one or more
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* contributor license agreements. See the NOTICE file distributed
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* with this work for additional information regarding copyright
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* ownership. The ASF licenses this file to you under the Apache
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* License, Version 2.0 (the "License"); you may not use this file
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* except in compliance with the License. You may obtain a copy of
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* the License at http://www.apache.org/licenses/LICENSE-2.0 .
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*/
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#include <unordered_map>
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#include <osl/diagnose.h>
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#include <osl/mutex.hxx>
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#include <rtl/ustrbuf.hxx>
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#include <sal/log.hxx>
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#include <uno/lbnames.h>
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#include <uno/mapping.hxx>
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#include <cppuhelper/implbase1.hxx>
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#include <cppuhelper/compbase.hxx>
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#include <cppuhelper/component_context.hxx>
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#include <cppuhelper/exc_hlp.hxx>
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#include <com/sun/star/container/XNameContainer.hpp>
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#include <com/sun/star/lang/WrappedTargetRuntimeException.hpp>
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#include <com/sun/star/lang/XSingleServiceFactory.hpp>
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#include <com/sun/star/lang/XSingleComponentFactory.hpp>
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#include <com/sun/star/lang/XMultiComponentFactory.hpp>
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#include <com/sun/star/lang/XComponent.hpp>
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#include <com/sun/star/beans/XPropertySet.hpp>
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#include <com/sun/star/uno/DeploymentException.hpp>
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#include <com/sun/star/uno/RuntimeException.hpp>
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#include <memory>
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#define SMGR_SINGLETON "/singletons/com.sun.star.lang.theServiceManager"
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#define TDMGR_SINGLETON "/singletons/com.sun.star.reflection.theTypeDescriptionManager"
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#define AC_SINGLETON "/singletons/com.sun.star.security.theAccessController"
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using namespace ::osl;
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using namespace ::com::sun::star::uno;
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using namespace ::com::sun::star;
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using rtl::OUString;
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using rtl::OUStringBuffer;
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using rtl::OUStringHash;
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namespace cppu
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{
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static inline void try_dispose( Reference< XInterface > const & xInstance )
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{
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Reference< lang::XComponent > xComp( xInstance, UNO_QUERY );
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if (xComp.is())
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{
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xComp->dispose();
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}
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}
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static inline void try_dispose( Reference< lang::XComponent > const & xComp )
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{
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if (xComp.is())
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{
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xComp->dispose();
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}
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}
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class DisposingForwarder
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: public WeakImplHelper1< lang::XEventListener >
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{
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Reference< lang::XComponent > m_xTarget;
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explicit DisposingForwarder( Reference< lang::XComponent > const & xTarget )
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: m_xTarget( xTarget )
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{
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OSL_ASSERT( m_xTarget.is() );
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}
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public:
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// listens at source for disposing, then disposes target
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static inline void listen(
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Reference< lang::XComponent > const & xSource,
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Reference< lang::XComponent > const & xTarget );
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virtual void SAL_CALL disposing( lang::EventObject const & rSource )
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throw (RuntimeException, std::exception) override;
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};
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inline void DisposingForwarder::listen(
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Reference< lang::XComponent > const & xSource,
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Reference< lang::XComponent > const & xTarget )
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{
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if (xSource.is())
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{
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xSource->addEventListener( new DisposingForwarder( xTarget ) );
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}
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}
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void DisposingForwarder::disposing( lang::EventObject const & )
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throw (RuntimeException, std::exception)
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{
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m_xTarget->dispose();
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m_xTarget.clear();
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}
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struct MutexHolder
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{
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protected:
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Mutex m_mutex;
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};
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class ComponentContext
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: private MutexHolder
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, public WeakComponentImplHelper< XComponentContext,
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container::XNameContainer >
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{
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protected:
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Reference< XComponentContext > m_xDelegate;
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struct ContextEntry
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{
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Any value;
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bool lateInit;
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inline ContextEntry( Any const & value_, bool lateInit_ )
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: value( value_ )
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, lateInit( lateInit_ )
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{}
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};
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typedef std::unordered_map< OUString, ContextEntry * , OUStringHash > t_map;
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t_map m_map;
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Reference< lang::XMultiComponentFactory > m_xSMgr;
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protected:
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Any lookupMap( OUString const & rName );
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virtual void SAL_CALL disposing() override;
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public:
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ComponentContext(
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ContextEntry_Init const * pEntries, sal_Int32 nEntries,
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Reference< XComponentContext > const & xDelegate );
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virtual ~ComponentContext();
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// XComponentContext
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virtual Any SAL_CALL getValueByName( OUString const & rName )
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throw (RuntimeException, std::exception) override;
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virtual Reference<lang::XMultiComponentFactory> SAL_CALL getServiceManager()
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throw (RuntimeException, std::exception) override;
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// XNameContainer
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virtual void SAL_CALL insertByName(
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OUString const & name, Any const & element )
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throw (lang::IllegalArgumentException, container::ElementExistException,
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lang::WrappedTargetException, RuntimeException, std::exception) override;
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virtual void SAL_CALL removeByName( OUString const & name )
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throw (container::NoSuchElementException,
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lang::WrappedTargetException, RuntimeException, std::exception) override;
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// XNameReplace
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virtual void SAL_CALL replaceByName(
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OUString const & name, Any const & element )
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throw (lang::IllegalArgumentException,container::NoSuchElementException,
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lang::WrappedTargetException, RuntimeException, std::exception) override;
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// XNameAccess
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virtual Any SAL_CALL getByName( OUString const & name )
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throw (container::NoSuchElementException,
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lang::WrappedTargetException, RuntimeException, std::exception) override;
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virtual Sequence<OUString> SAL_CALL getElementNames()
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throw (RuntimeException, std::exception) override;
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virtual sal_Bool SAL_CALL hasByName( OUString const & name )
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throw (RuntimeException, std::exception) override;
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// XElementAccess
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virtual Type SAL_CALL getElementType() throw (RuntimeException, std::exception) override;
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virtual sal_Bool SAL_CALL hasElements() throw (RuntimeException, std::exception) override;
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};
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// XNameContainer
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void ComponentContext::insertByName(
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OUString const & name, Any const & element )
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throw (lang::IllegalArgumentException, container::ElementExistException,
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lang::WrappedTargetException, RuntimeException, std::exception)
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{
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t_map::mapped_type entry(
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new ContextEntry(
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element,
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/* lateInit_: */
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name.startsWith( "/singletons/" ) &&
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!element.hasValue() ) );
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MutexGuard guard( m_mutex );
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::std::pair<t_map::iterator, bool> insertion( m_map.insert(
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t_map::value_type( name, entry ) ) );
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if (! insertion.second)
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throw container::ElementExistException(
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"element already exists: " + name,
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static_cast<OWeakObject *>(this) );
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}
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void ComponentContext::removeByName( OUString const & name )
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throw (container::NoSuchElementException,
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lang::WrappedTargetException, RuntimeException, std::exception)
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{
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MutexGuard guard( m_mutex );
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t_map::iterator iFind( m_map.find( name ) );
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if (iFind == m_map.end())
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throw container::NoSuchElementException(
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"no such element: " + name,
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static_cast<OWeakObject *>(this) );
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delete iFind->second;
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m_map.erase(iFind);
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}
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// XNameReplace
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void ComponentContext::replaceByName(
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OUString const & name, Any const & element )
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throw (lang::IllegalArgumentException,container::NoSuchElementException,
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lang::WrappedTargetException, RuntimeException, std::exception)
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{
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MutexGuard guard( m_mutex );
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t_map::const_iterator const iFind( m_map.find( name ) );
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if (iFind == m_map.end())
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throw container::NoSuchElementException(
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"no such element: " + name,
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static_cast<OWeakObject *>(this) );
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if (name.startsWith( "/singletons/" ) &&
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!element.hasValue())
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{
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iFind->second->value.clear();
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iFind->second->lateInit = true;
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}
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else
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{
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iFind->second->value = element;
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iFind->second->lateInit = false;
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}
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}
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// XNameAccess
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Any ComponentContext::getByName( OUString const & name )
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throw (container::NoSuchElementException,
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lang::WrappedTargetException, RuntimeException, std::exception)
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{
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return getValueByName( name );
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}
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Sequence<OUString> ComponentContext::getElementNames()
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throw (RuntimeException, std::exception)
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{
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MutexGuard guard( m_mutex );
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Sequence<OUString> ret( m_map.size() );
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OUString * pret = ret.getArray();
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sal_Int32 pos = 0;
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t_map::const_iterator iPos( m_map.begin() );
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t_map::const_iterator const iEnd( m_map.end() );
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for ( ; iPos != iEnd; ++iPos )
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pret[pos++] = iPos->first;
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return ret;
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}
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sal_Bool ComponentContext::hasByName( OUString const & name )
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throw (RuntimeException, std::exception)
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{
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MutexGuard guard( m_mutex );
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return m_map.find( name ) != m_map.end();
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}
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// XElementAccess
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Type ComponentContext::getElementType() throw (RuntimeException, std::exception)
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{
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return cppu::UnoType<void>::get();
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}
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sal_Bool ComponentContext::hasElements() throw (RuntimeException, std::exception)
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{
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MutexGuard guard( m_mutex );
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return ! m_map.empty();
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}
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Any ComponentContext::lookupMap( OUString const & rName )
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{
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ResettableMutexGuard guard( m_mutex );
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t_map::const_iterator iFind( m_map.find( rName ) );
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if (iFind == m_map.end())
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return Any();
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t_map::mapped_type pEntry = iFind->second;
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if (! pEntry->lateInit)
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return pEntry->value;
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// late init singleton entry
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Reference< XInterface > xInstance;
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guard.clear();
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try
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{
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Any usesService( getValueByName( rName + "/service" ) );
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Any args_( getValueByName( rName + "/arguments" ) );
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Sequence<Any> args;
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if (args_.hasValue() && !(args_ >>= args))
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{
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args.realloc( 1 );
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args[ 0 ] = args_;
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}
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Reference< lang::XSingleComponentFactory > xFac;
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if (usesService >>= xFac) // try via factory
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{
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xInstance = args.getLength()
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? xFac->createInstanceWithArgumentsAndContext( args, this )
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: xFac->createInstanceWithContext( this );
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}
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else
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{
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Reference< lang::XSingleServiceFactory > xFac2;
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if (usesService >>= xFac2)
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{
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// try via old XSingleServiceFactory
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xInstance = args.getLength()
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? xFac2->createInstanceWithArguments( args )
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: xFac2->createInstance();
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}
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else if (m_xSMgr.is()) // optionally service name
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{
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OUString serviceName;
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if ((usesService >>= serviceName) &&
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!serviceName.isEmpty())
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{
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xInstance = args.getLength()
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? m_xSMgr->createInstanceWithArgumentsAndContext(
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serviceName, args, this )
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: m_xSMgr->createInstanceWithContext(
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serviceName, this );
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}
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}
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}
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}
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catch (const RuntimeException &)
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{
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throw;
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}
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catch (const Exception & exc)
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{
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SAL_WARN(
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"cppuhelper",
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"exception occurred raising singleton \"" << rName << "\": "
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<< exc.Message);
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}
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SAL_WARN_IF(!xInstance.is(),
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"cppuhelper", "no service object raising singleton " << rName);
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Any ret;
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guard.reset();
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iFind = m_map.find( rName );
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if (iFind != m_map.end())
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{
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pEntry = iFind->second;
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if (pEntry->lateInit)
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{
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pEntry->value <<= xInstance;
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pEntry->lateInit = false;
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return pEntry->value;
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}
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else
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ret = pEntry->value;
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}
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guard.clear();
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if (ret != xInstance) {
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try_dispose( xInstance );
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}
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return ret;
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}
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Any ComponentContext::getValueByName( OUString const & rName )
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throw (RuntimeException, std::exception)
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{
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// to determine the root context:
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if ( rName == "_root" )
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{
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if (m_xDelegate.is())
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return m_xDelegate->getValueByName( rName );
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else
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return makeAny( Reference<XComponentContext>(this) );
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}
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Any ret( lookupMap( rName ) );
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if (!ret.hasValue() && m_xDelegate.is())
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{
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return m_xDelegate->getValueByName( rName );
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}
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return ret;
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}
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Reference< lang::XMultiComponentFactory > ComponentContext::getServiceManager()
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throw (RuntimeException, std::exception)
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{
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if ( !m_xSMgr.is() )
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{
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throw DeploymentException(
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"null component context service manager",
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static_cast<OWeakObject *>(this) );
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}
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return m_xSMgr;
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}
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ComponentContext::~ComponentContext()
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{
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t_map::const_iterator iPos( m_map.begin() );
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t_map::const_iterator const iEnd( m_map.end() );
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for ( ; iPos != iEnd; ++iPos )
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delete iPos->second;
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m_map.clear();
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}
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void ComponentContext::disposing()
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{
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Reference< lang::XComponent > xTDMgr, xAC; // to be disposed separately
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// dispose all context objects
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t_map::const_iterator iPos( m_map.begin() );
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t_map::const_iterator const iEnd( m_map.end() );
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for ( ; iPos != iEnd; ++iPos )
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{
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t_map::mapped_type pEntry = iPos->second;
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// service manager disposed separately
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if (!m_xSMgr.is() ||
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!iPos->first.startsWith( SMGR_SINGLETON ))
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{
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if (pEntry->lateInit)
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{
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// late init
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MutexGuard guard( m_mutex );
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if (pEntry->lateInit)
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{
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pEntry->value.clear(); // release factory
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pEntry->lateInit = false;
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continue;
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}
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}
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Reference< lang::XComponent > xComp;
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pEntry->value >>= xComp;
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if (xComp.is())
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{
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if ( iPos->first == TDMGR_SINGLETON )
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{
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xTDMgr = xComp;
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}
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else if ( iPos->first == AC_SINGLETON )
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{
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xAC = xComp;
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}
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else // dispose immediately
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{
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xComp->dispose();
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}
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}
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}
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}
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// dispose service manager
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try_dispose( m_xSMgr );
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m_xSMgr.clear();
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// dispose ac
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try_dispose( xAC );
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// dispose tdmgr; revokes callback from cppu runtime
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try_dispose( xTDMgr );
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iPos = m_map.begin();
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for ( ; iPos != iEnd; ++iPos )
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delete iPos->second;
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m_map.clear();
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// Hack to terminate any JNI bridge's AsynchronousFinalizer thread (as JNI
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// proxies get finalized with arbitrary delay, so the bridge typically does
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// not dispose itself early enough before the process exits):
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uno_Environment ** envs;
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sal_Int32 envCount;
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uno_getRegisteredEnvironments(
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&envs, &envCount, &rtl_allocateMemory, OUString("java").pData);
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assert(envCount >= 0);
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assert(envCount == 0 || envs != nullptr);
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if (envs) {
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for (sal_Int32 i = 0; i != envCount; ++i) {
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assert(envs[i] != nullptr);
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assert(envs[i]->dispose != nullptr);
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(*envs[i]->dispose)(envs[i]);
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}
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rtl_freeMemory(envs);
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}
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}
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ComponentContext::ComponentContext(
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ContextEntry_Init const * pEntries, sal_Int32 nEntries,
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Reference< XComponentContext > const & xDelegate )
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: WeakComponentImplHelper( m_mutex ),
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m_xDelegate( xDelegate )
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{
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for ( sal_Int32 nPos = 0; nPos < nEntries; ++nPos )
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{
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ContextEntry_Init const & rEntry = pEntries[ nPos ];
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if ( rEntry.name == SMGR_SINGLETON )
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{
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rEntry.value >>= m_xSMgr;
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}
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if (rEntry.bLateInitService)
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{
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// singleton entry
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m_map[ rEntry.name ] = new ContextEntry( Any(), true );
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// service
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m_map[ rEntry.name + "/service" ] = new ContextEntry( rEntry.value, false );
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// initial-arguments are provided as optional context entry
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}
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else
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{
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// only value, no late init factory nor string
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m_map[ rEntry.name ] = new ContextEntry( rEntry.value, false );
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}
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}
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if (!m_xSMgr.is() && m_xDelegate.is())
|
|
{
|
|
// wrap delegate's smgr XPropertySet into new smgr
|
|
Reference< lang::XMultiComponentFactory > xMgr( m_xDelegate->getServiceManager() );
|
|
if (xMgr.is())
|
|
{
|
|
osl_atomic_increment( &m_refCount );
|
|
try
|
|
{
|
|
// create new smgr based on delegate's one
|
|
m_xSMgr.set(
|
|
xMgr->createInstanceWithContext(
|
|
"com.sun.star.comp.stoc.OServiceManagerWrapper", xDelegate ),
|
|
UNO_QUERY );
|
|
// patch DefaultContext property of new one
|
|
Reference< beans::XPropertySet > xProps( m_xSMgr, UNO_QUERY );
|
|
OSL_ASSERT( xProps.is() );
|
|
if (xProps.is())
|
|
{
|
|
Reference< XComponentContext > xThis( this );
|
|
xProps->setPropertyValue( "DefaultContext", makeAny( xThis ) );
|
|
}
|
|
}
|
|
catch (...)
|
|
{
|
|
osl_atomic_decrement( &m_refCount );
|
|
throw;
|
|
}
|
|
osl_atomic_decrement( &m_refCount );
|
|
OSL_ASSERT( m_xSMgr.is() );
|
|
}
|
|
}
|
|
}
|
|
|
|
|
|
extern "C" { static void s_createComponentContext_v(va_list * pParam)
|
|
{
|
|
ContextEntry_Init const * pEntries = va_arg(*pParam, ContextEntry_Init const *);
|
|
sal_Int32 nEntries = va_arg(*pParam, sal_Int32);
|
|
XComponentContext * pDelegatee = va_arg(*pParam, XComponentContext *);
|
|
void ** ppContext = va_arg(*pParam, void **);
|
|
uno::Mapping * pTarget2curr = va_arg(*pParam, uno::Mapping *);
|
|
|
|
Reference<XComponentContext> xDelegate(pDelegatee, SAL_NO_ACQUIRE);
|
|
Reference<XComponentContext> xContext;
|
|
|
|
if (nEntries > 0)
|
|
{
|
|
try
|
|
{
|
|
ComponentContext * p = new ComponentContext( pEntries, nEntries, xDelegate );
|
|
xContext.set(p);
|
|
// listen delegate for disposing, to dispose this (wrapping) context first.
|
|
DisposingForwarder::listen( Reference< lang::XComponent >::query( xDelegate ), p );
|
|
}
|
|
catch (Exception & exc)
|
|
{
|
|
(void) exc; // avoid warning about unused variable
|
|
OSL_FAIL( OUStringToOString(
|
|
exc.Message, RTL_TEXTENCODING_ASCII_US ).getStr() );
|
|
xContext.clear();
|
|
}
|
|
}
|
|
else
|
|
{
|
|
xContext = xDelegate;
|
|
}
|
|
|
|
*ppContext = pTarget2curr->mapInterface(xContext.get(), cppu::UnoType<decltype(xContext)>::get());
|
|
}}
|
|
|
|
Reference< XComponentContext > SAL_CALL createComponentContext(
|
|
ContextEntry_Init const * pEntries, sal_Int32 nEntries,
|
|
Reference< XComponentContext > const & xDelegate )
|
|
{
|
|
uno::Environment curr_env(Environment::getCurrent());
|
|
uno::Environment source_env(CPPU_CURRENT_LANGUAGE_BINDING_NAME);
|
|
|
|
uno::Mapping curr2source(curr_env, source_env);
|
|
uno::Mapping source2curr(source_env, curr_env);
|
|
|
|
std::unique_ptr<ContextEntry_Init[]> mapped_entries(new ContextEntry_Init[nEntries]);
|
|
for (sal_Int32 nPos = 0; nPos < nEntries; ++ nPos)
|
|
{
|
|
mapped_entries[nPos].bLateInitService = pEntries[nPos].bLateInitService;
|
|
mapped_entries[nPos].name = pEntries[nPos].name;
|
|
|
|
uno_type_any_constructAndConvert(&mapped_entries[nPos].value,
|
|
const_cast<void *>(pEntries[nPos].value.getValue()),
|
|
pEntries[nPos].value.getValueTypeRef(),
|
|
curr2source.get());
|
|
}
|
|
|
|
void * mapped_delegate = curr2source.mapInterface(xDelegate.get(), cppu::UnoType<decltype(xDelegate)>::get());
|
|
XComponentContext * pXComponentContext = nullptr;
|
|
source_env.invoke(s_createComponentContext_v, mapped_entries.get(), nEntries, mapped_delegate, &pXComponentContext, &source2curr);
|
|
mapped_entries.reset();
|
|
|
|
return Reference<XComponentContext>(pXComponentContext, SAL_NO_ACQUIRE);
|
|
}
|
|
|
|
}
|
|
|
|
/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
|