24c709655e
Change-Id: I29074d801eaef57f160ce14b943b21831b327ecf Reviewed-on: https://gerrit.libreoffice.org/c/core/+/134979 Tested-by: Jenkins Reviewed-by: Noel Grandin <noel.grandin@collabora.co.uk>
445 lines
12 KiB
C++
445 lines
12 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 <cppuhelper/supportsservice.hxx>
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#include <com/sun/star/util/CloseVetoException.hpp>
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#include <com/sun/star/util/XCloseBroadcaster.hpp>
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#include <com/sun/star/util/XCloseable.hpp>
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#include <com/sun/star/lang/DisposedException.hpp>
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#include <com/sun/star/lang/IllegalArgumentException.hpp>
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#include <com/sun/star/frame/XDesktop.hpp>
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#include <com/sun/star/frame/TerminationVetoException.hpp>
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#include <com/sun/star/frame/DoubleInitializationException.hpp>
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#include <com/sun/star/embed/Actions.hpp>
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#include <com/sun/star/embed/XActionsApproval.hpp>
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#include <utility>
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#include "instancelocker.hxx"
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namespace com::sun::star::uno { class XComponentContext; }
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using namespace ::com::sun::star;
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// OInstanceLocker
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OInstanceLocker::OInstanceLocker()
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: m_bDisposed( false )
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, m_bInitialized( false )
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{
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}
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OInstanceLocker::~OInstanceLocker()
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{
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if ( !m_bDisposed )
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{
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osl_atomic_increment(&m_refCount); // to call dispose
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try {
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dispose();
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}
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catch ( uno::RuntimeException& )
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{}
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}
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}
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// XComponent
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void SAL_CALL OInstanceLocker::dispose()
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{
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std::unique_lock aGuard( m_aMutex );
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if ( m_bDisposed )
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throw lang::DisposedException();
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lang::EventObject aSource( static_cast< ::cppu::OWeakObject* >(this) );
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m_aListenersContainer.disposeAndClear( aGuard, aSource );
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if ( m_xLockListener.is() )
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{
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auto tmp = std::move(m_xLockListener);
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aGuard.unlock();
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tmp->Dispose();
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aGuard.lock();
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}
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m_bDisposed = true;
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}
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void SAL_CALL OInstanceLocker::addEventListener( const uno::Reference< lang::XEventListener >& xListener )
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{
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std::unique_lock aGuard( m_aMutex );
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if ( m_bDisposed )
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throw lang::DisposedException(); // TODO
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m_aListenersContainer.addInterface( aGuard, xListener );
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}
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void SAL_CALL OInstanceLocker::removeEventListener( const uno::Reference< lang::XEventListener >& xListener )
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{
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std::unique_lock aGuard( m_aMutex );
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m_aListenersContainer.removeInterface( aGuard, xListener );
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}
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// XInitialization
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void SAL_CALL OInstanceLocker::initialize( const uno::Sequence< uno::Any >& aArguments )
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{
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std::unique_lock aGuard( m_aMutex );
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if ( m_bInitialized )
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throw frame::DoubleInitializationException();
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if ( m_bDisposed )
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throw lang::DisposedException(); // TODO
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if ( !m_refCount )
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throw uno::RuntimeException(); // the object must be refcounted already!
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uno::Reference< uno::XInterface > xInstance;
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uno::Reference< embed::XActionsApproval > xApproval;
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try
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{
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sal_Int32 nLen = aArguments.getLength();
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if ( nLen < 2 || nLen > 3 )
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throw lang::IllegalArgumentException(
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"Wrong count of parameters!",
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uno::Reference< uno::XInterface >(),
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0 );
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if ( !( aArguments[0] >>= xInstance ) || !xInstance.is() )
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throw lang::IllegalArgumentException(
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"Nonempty reference is expected as the first argument!",
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uno::Reference< uno::XInterface >(),
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0 );
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sal_Int32 nModes = 0;
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if (
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!( aArguments[1] >>= nModes ) ||
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(
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!( nModes & embed::Actions::PREVENT_CLOSE ) &&
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!( nModes & embed::Actions::PREVENT_TERMINATION )
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)
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)
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{
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throw lang::IllegalArgumentException(
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"The correct modes set is expected as the second argument!",
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uno::Reference< uno::XInterface >(),
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0 );
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}
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if ( nLen == 3 && !( aArguments[2] >>= xApproval ) )
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throw lang::IllegalArgumentException(
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"If the third argument is provided, it must be XActionsApproval implementation!",
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uno::Reference< uno::XInterface >(),
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0 );
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m_xLockListener = new OLockListener( uno::Reference< lang::XComponent > ( static_cast< lang::XComponent* >( this ) ),
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xInstance,
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nModes,
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xApproval );
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m_xLockListener->Init();
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}
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catch( uno::Exception& )
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{
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aGuard.unlock();
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dispose();
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throw;
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}
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m_bInitialized = true;
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}
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// XServiceInfo
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OUString SAL_CALL OInstanceLocker::getImplementationName( )
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{
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return "com.sun.star.comp.embed.InstanceLocker";
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}
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sal_Bool SAL_CALL OInstanceLocker::supportsService( const OUString& ServiceName )
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{
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return cppu::supportsService(this, ServiceName);
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}
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uno::Sequence< OUString > SAL_CALL OInstanceLocker::getSupportedServiceNames()
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{
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return { "com.sun.star.embed.InstanceLocker" };
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}
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// OLockListener
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OLockListener::OLockListener( uno::WeakReference< lang::XComponent > xWrapper,
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uno::Reference< uno::XInterface > xInstance,
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sal_Int32 nMode,
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uno::Reference< embed::XActionsApproval > xApproval )
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: m_xInstance(std::move( xInstance ))
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, m_xApproval(std::move( xApproval ))
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, m_xWrapper(std::move( xWrapper ))
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, m_bDisposed( false )
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, m_bInitialized( false )
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, m_nMode( nMode )
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{
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}
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OLockListener::~OLockListener()
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{
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}
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void OLockListener::Dispose()
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{
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std::unique_lock aGuard( m_aMutex );
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if ( m_bDisposed )
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return;
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auto xInstance = std::move(m_xInstance);
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auto nMode = m_nMode;
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m_bDisposed = true;
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aGuard.unlock();
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if ( nMode & embed::Actions::PREVENT_CLOSE )
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{
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try
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{
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uno::Reference< util::XCloseBroadcaster > xCloseBroadcaster( xInstance, uno::UNO_QUERY );
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if ( xCloseBroadcaster.is() )
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xCloseBroadcaster->removeCloseListener( static_cast< util::XCloseListener* >( this ) );
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uno::Reference< util::XCloseable > xCloseable( xInstance, uno::UNO_QUERY );
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if ( xCloseable.is() )
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xCloseable->close( true );
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}
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catch( uno::Exception& )
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{}
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}
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if ( nMode & embed::Actions::PREVENT_TERMINATION )
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{
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try
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{
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uno::Reference< frame::XDesktop > xDesktop( xInstance, uno::UNO_QUERY_THROW );
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xDesktop->removeTerminateListener( static_cast< frame::XTerminateListener* >( this ) );
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}
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catch( uno::Exception& )
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{}
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}
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}
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// XEventListener
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void SAL_CALL OLockListener::disposing( const lang::EventObject& aEvent )
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{
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std::unique_lock aGuard( m_aMutex );
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// object is disposed
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if ( aEvent.Source != m_xInstance )
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return;
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// the object does not listen for anything any more
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m_nMode = 0;
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// dispose the wrapper;
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uno::Reference< lang::XComponent > xComponent( m_xWrapper.get(), uno::UNO_QUERY );
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aGuard.unlock();
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if ( xComponent.is() )
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{
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try { xComponent->dispose(); }
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catch( uno::Exception& ){}
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}
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}
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// XCloseListener
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void SAL_CALL OLockListener::queryClosing( const lang::EventObject& aEvent, sal_Bool )
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{
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// GetsOwnership parameter is always ignored, the user of the service must close the object always
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std::unique_lock aGuard( m_aMutex );
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if ( !(!m_bDisposed && aEvent.Source == m_xInstance && ( m_nMode & embed::Actions::PREVENT_CLOSE )) )
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return;
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try
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{
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uno::Reference< embed::XActionsApproval > xApprove = m_xApproval;
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// unlock the mutex here
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aGuard.unlock();
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if ( xApprove.is() && xApprove->approveAction( embed::Actions::PREVENT_CLOSE ) )
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throw util::CloseVetoException();
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}
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catch( util::CloseVetoException& )
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{
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// rethrow this exception
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throw;
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}
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catch( uno::Exception& )
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{
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// no action should be done
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}
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}
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void SAL_CALL OLockListener::notifyClosing( const lang::EventObject& aEvent )
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{
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std::unique_lock aGuard( m_aMutex );
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// object is closed, no reason to listen
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if ( aEvent.Source != m_xInstance )
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return;
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uno::Reference< util::XCloseBroadcaster > xCloseBroadcaster( aEvent.Source, uno::UNO_QUERY );
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if ( !xCloseBroadcaster.is() )
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return;
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xCloseBroadcaster->removeCloseListener( static_cast< util::XCloseListener* >( this ) );
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m_nMode &= ~embed::Actions::PREVENT_CLOSE;
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if ( !m_nMode )
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{
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// dispose the wrapper;
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uno::Reference< lang::XComponent > xComponent( m_xWrapper.get(), uno::UNO_QUERY );
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aGuard.unlock();
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if ( xComponent.is() )
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{
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try { xComponent->dispose(); }
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catch( uno::Exception& ){}
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}
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}
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}
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// XTerminateListener
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void SAL_CALL OLockListener::queryTermination( const lang::EventObject& aEvent )
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{
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std::unique_lock aGuard( m_aMutex );
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if ( !(aEvent.Source == m_xInstance && ( m_nMode & embed::Actions::PREVENT_TERMINATION )) )
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return;
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try
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{
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uno::Reference< embed::XActionsApproval > xApprove = m_xApproval;
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// unlock the mutex here
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aGuard.unlock();
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if ( xApprove.is() && xApprove->approveAction( embed::Actions::PREVENT_TERMINATION ) )
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throw frame::TerminationVetoException();
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}
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catch( frame::TerminationVetoException& )
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{
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// rethrow this exception
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throw;
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}
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catch( uno::Exception& )
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{
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// no action should be done
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}
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}
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void SAL_CALL OLockListener::notifyTermination( const lang::EventObject& aEvent )
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{
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std::unique_lock aGuard( m_aMutex );
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// object is terminated, no reason to listen
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if ( aEvent.Source != m_xInstance )
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return;
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uno::Reference< frame::XDesktop > xDesktop( aEvent.Source, uno::UNO_QUERY );
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if ( !xDesktop.is() )
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return;
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try
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{
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xDesktop->removeTerminateListener( static_cast< frame::XTerminateListener* >( this ) );
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m_nMode &= ~embed::Actions::PREVENT_TERMINATION;
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if ( !m_nMode )
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{
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// dispose the wrapper;
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uno::Reference< lang::XComponent > xComponent( m_xWrapper.get(), uno::UNO_QUERY );
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aGuard.unlock();
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if ( xComponent.is() )
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{
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try { xComponent->dispose(); }
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catch( uno::Exception& ){}
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}
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}
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}
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catch( uno::Exception& )
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{}
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}
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// XInitialization
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void OLockListener::Init()
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{
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std::unique_lock aGuard( m_aMutex );
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if ( m_bDisposed || m_bInitialized )
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return;
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try
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{
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if ( m_nMode & embed::Actions::PREVENT_CLOSE )
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{
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uno::Reference< util::XCloseBroadcaster > xCloseBroadcaster( m_xInstance, uno::UNO_QUERY_THROW );
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xCloseBroadcaster->addCloseListener( static_cast< util::XCloseListener* >( this ) );
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}
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if ( m_nMode & embed::Actions::PREVENT_TERMINATION )
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{
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uno::Reference< frame::XDesktop > xDesktop( m_xInstance, uno::UNO_QUERY_THROW );
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xDesktop->addTerminateListener( static_cast< frame::XTerminateListener* >( this ) );
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}
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}
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catch( uno::Exception& )
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{
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// dispose the wrapper;
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uno::Reference< lang::XComponent > xComponent( m_xWrapper.get(), uno::UNO_QUERY );
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aGuard.unlock();
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if ( xComponent.is() )
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{
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try { xComponent->dispose(); }
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catch( uno::Exception& ){}
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}
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throw;
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}
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m_bInitialized = true;
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}
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extern "C" SAL_DLLPUBLIC_EXPORT css::uno::XInterface *
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com_sun_star_comp_embed_InstanceLocker(
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css::uno::XComponentContext *,
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css::uno::Sequence<css::uno::Any> const &)
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{
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return cppu::acquire(new OInstanceLocker());
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}
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/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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