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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 .
*/
//------------------------------------------------------------------------
// includes
//------------------------------------------------------------------------
#include <osl/diagnose.h>
#include "WinClipbImpl.hxx"
#include <systools/win32/comtools.hxx>
#include "../../inc/DtObjFactory.hxx"
#include "../dtobj/APNDataObject.hxx"
#include "WinClipboard.hxx"
#include <com/sun/star/datatransfer/clipboard/RenderingCapabilities.hpp>
#include "../dtobj/XNotifyingDataObject.hxx"
#if defined _MSC_VER
#pragma warning(push,1)
#endif
#include <windows.h>
#include <ole2.h>
#include <objidl.h>
#if defined _MSC_VER
#pragma warning(pop)
#endif
//------------------------------------------------------------------------
// namespace directives
//------------------------------------------------------------------------
using namespace osl;
using namespace std;
using namespace cppu;
using namespace com::sun::star::uno;
using namespace com::sun::star::datatransfer;
using namespace com::sun::star::datatransfer::clipboard;
using namespace com::sun::star::datatransfer::clipboard::RenderingCapabilities;
using ::rtl::OUString;
//------------------------------------------------------------------------
// deklarations
//------------------------------------------------------------------------
// definition of static members
CWinClipbImpl* CWinClipbImpl::s_pCWinClipbImpl = NULL;
osl::Mutex CWinClipbImpl::s_aMutex;
//------------------------------------------------------------------------
//
//------------------------------------------------------------------------
CWinClipbImpl::CWinClipbImpl( const OUString& aClipboardName, CWinClipboard* theWinClipboard ) :
m_itsName( aClipboardName ),
m_pWinClipboard( theWinClipboard ),
m_pCurrentClipContent( NULL )
{
OSL_ASSERT( NULL != m_pWinClipboard );
// necessary to reassociate from
// the static callback function
s_pCWinClipbImpl = this;
registerClipboardViewer( );
}
//------------------------------------------------------------------------
//
//------------------------------------------------------------------------
CWinClipbImpl::~CWinClipbImpl( )
{
ClearableMutexGuard aGuard( s_aMutex );
s_pCWinClipbImpl = NULL;
aGuard.clear( );
unregisterClipboardViewer( );
}
//------------------------------------------------------------------------
// getContent
//------------------------------------------------------------------------
Reference< XTransferable > SAL_CALL CWinClipbImpl::getContents( ) throw( RuntimeException )
{
// use the shotcut or create a transferable from
// system clipboard
ClearableMutexGuard aGuard( m_ClipContentMutex );
if ( NULL != m_pCurrentClipContent )
{
return m_pCurrentClipContent->m_XTransferable;
}
// release the mutex, so that the variable may be
// changed by other threads
aGuard.clear( );
Reference< XTransferable > rClipContent;
// get the current dataobject from clipboard
IDataObjectPtr pIDataObject;
HRESULT hr = m_MtaOleClipboard.getClipboard( &pIDataObject );
if ( SUCCEEDED( hr ) )
{
// create an apartment neutral dataobject and initialize it with a
// com smart pointer to the IDataObject from clipboard
IDataObjectPtr pIDo( new CAPNDataObject( pIDataObject ) );
CDTransObjFactory objFactory;
// remeber pIDo destroys itself due to the smart pointer
rClipContent = objFactory.createTransferableFromDataObj( m_pWinClipboard->m_SrvMgr, pIDo );
}
return rClipContent;
}
//------------------------------------------------------------------------
// setContent
//------------------------------------------------------------------------
void SAL_CALL CWinClipbImpl::setContents(
const Reference< XTransferable >& xTransferable,
const Reference< XClipboardOwner >& xClipboardOwner )
throw( RuntimeException )
{
CDTransObjFactory objFactory;
IDataObjectPtr pIDataObj;
if ( xTransferable.is( ) )
{
ClearableMutexGuard aGuard( m_ClipContentMutex );
m_pCurrentClipContent = new CXNotifyingDataObject(
objFactory.createDataObjFromTransferable( m_pWinClipboard->m_SrvMgr , xTransferable ),
xTransferable,
xClipboardOwner,
this );
aGuard.clear( );
pIDataObj = IDataObjectPtr( m_pCurrentClipContent );
}
m_MtaOleClipboard.setClipboard(pIDataObj.get());
}
//------------------------------------------------------------------------
//
//------------------------------------------------------------------------
OUString SAL_CALL CWinClipbImpl::getName( ) throw( RuntimeException )
{
return m_itsName;
}
//------------------------------------------------------------------------
//
//------------------------------------------------------------------------
sal_Int8 SAL_CALL CWinClipbImpl::getRenderingCapabilities( ) throw( RuntimeException )
{
return ( Delayed | Persistant );
}
//------------------------------------------------------------------------
//
//------------------------------------------------------------------------
void SAL_CALL CWinClipbImpl::flushClipboard( ) throw( RuntimeException )
{
// sollte eigentlich hier stehen: ClearableMutexGuard aGuard( m_ClipContentMutex );
// geht aber nicht, da FlushClipboard zurückruft und das DataObject
// freigibt und damit würde es einen Deadlock in onReleaseDataObject geben
// FlushClipboard muß synchron sein, damit das runterfahren ggf. erst weitergeht,
// wenn alle Clipboard-Formate gerendert wurden
// die Abfrage ist nötig, damit nur geflusht wird, wenn wir wirklich Clipboardowner
// sind (ich weiss nicht genau was passiert, wenn man flusht und nicht Clipboard
// owner ist).
// eventuell kann man aber die Abfrage in den Clipboard STA Thread verlagern, indem
// man sich dort das DataObject merkt und vor dem flushen OleIsCurrentClipboard ruft
if ( NULL != m_pCurrentClipContent )
m_MtaOleClipboard.flushClipboard( );
}
//------------------------------------------------------------------------
//
//------------------------------------------------------------------------
void SAL_CALL CWinClipbImpl::registerClipboardViewer( )
{
m_MtaOleClipboard.registerClipViewer( CWinClipbImpl::onClipboardContentChanged );
}
//------------------------------------------------------------------------
//
//------------------------------------------------------------------------
void SAL_CALL CWinClipbImpl::unregisterClipboardViewer( )
{
m_MtaOleClipboard.registerClipViewer( NULL );
}
//------------------------------------------------------------------------
//
//------------------------------------------------------------------------
void SAL_CALL CWinClipbImpl::dispose() throw( RuntimeException )
{
OSL_ENSURE( !m_pCurrentClipContent, "Clipboard was not flushed before shutdown!" );
}
//------------------------------------------------------------------------
//
//------------------------------------------------------------------------
void WINAPI CWinClipbImpl::onClipboardContentChanged( void )
{
MutexGuard aGuard( s_aMutex );
// reassocition to instance through static member
if ( NULL != s_pCWinClipbImpl )
s_pCWinClipbImpl->m_pWinClipboard->notifyAllClipboardListener( );
}
//------------------------------------------------------------------------
//
//------------------------------------------------------------------------
void SAL_CALL CWinClipbImpl::onReleaseDataObject( CXNotifyingDataObject* theCaller )
{
OSL_ASSERT( NULL != theCaller );
if ( theCaller )
theCaller->lostOwnership( );
// if the current caller is the one we currently
// hold, then set it to NULL because an external
// source must be the clipboardowner now
MutexGuard aGuard( m_ClipContentMutex );
if ( m_pCurrentClipContent == theCaller )
m_pCurrentClipContent = NULL;
}
/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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