From 940b4d1848e8c70ab7642901a68594e8016caffc Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Sat, 27 Apr 2024 18:51:28 +0200 Subject: Adding upstream version 1:7.0.4. Signed-off-by: Daniel Baumann --- dtrans/source/win32/dtobj/APNDataObject.cxx | 327 ++++++++++++++++++++++++++++ 1 file changed, 327 insertions(+) create mode 100644 dtrans/source/win32/dtobj/APNDataObject.cxx (limited to 'dtrans/source/win32/dtobj/APNDataObject.cxx') diff --git a/dtrans/source/win32/dtobj/APNDataObject.cxx b/dtrans/source/win32/dtobj/APNDataObject.cxx new file mode 100644 index 000000000..53342f21f --- /dev/null +++ b/dtrans/source/win32/dtobj/APNDataObject.cxx @@ -0,0 +1,327 @@ +/* -*- 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 "APNDataObject.hxx" +#include + +#include + +#define FREE_HGLOB_ON_RELEASE TRUE +#define KEEP_HGLOB_ON_RELEASE FALSE + +// ctor + +CAPNDataObject::CAPNDataObject( IDataObjectPtr rIDataObject ) : + m_rIDataObjectOrg( rIDataObject ), + m_hGlobal( nullptr ), + m_nRefCnt( 0 ) +{ + + OSL_ENSURE( m_rIDataObjectOrg.get( ), "constructing CAPNDataObject with empty data object" ); + + // we marshal the IDataObject interface pointer here so + // that it can be unmarshalled multiple times when this + // class will be used from another apartment + IStreamPtr pStm; + HRESULT hr = CreateStreamOnHGlobal( nullptr, KEEP_HGLOB_ON_RELEASE, &pStm ); + + OSL_ENSURE( E_INVALIDARG != hr, "invalid args passed to CreateStreamOnHGlobal" ); + + if ( SUCCEEDED( hr ) ) + { + HRESULT hr_marshal = CoMarshalInterface( + pStm.get(), + __uuidof(IDataObject), + static_cast(m_rIDataObjectOrg.get()), + MSHCTX_LOCAL, + nullptr, + MSHLFLAGS_TABLEWEAK ); + + OSL_ENSURE( CO_E_NOTINITIALIZED != hr_marshal, "COM is not initialized" ); + + // marshalling may fail if COM is not initialized + // for the calling thread which is a program time + // error or because of stream errors which are runtime + // errors for instance E_OUTOFMEMORY etc. + + hr = GetHGlobalFromStream(pStm.get(), &m_hGlobal ); + + OSL_ENSURE( E_INVALIDARG != hr, "invalid stream passed to GetHGlobalFromStream" ); + + // if the marshalling failed we free the + // global memory again and set m_hGlobal + // to a defined value + if (FAILED(hr_marshal)) + { + OSL_FAIL("marshalling failed"); + + HGLOBAL hGlobal = + GlobalFree(m_hGlobal); + OSL_ENSURE(nullptr == hGlobal, "GlobalFree failed"); + m_hGlobal = nullptr; + } + } +} + +CAPNDataObject::~CAPNDataObject( ) +{ + if (m_hGlobal) + { + IStreamPtr pStm; + HRESULT hr = CreateStreamOnHGlobal(m_hGlobal, FREE_HGLOB_ON_RELEASE, &pStm); + + OSL_ENSURE( E_INVALIDARG != hr, "invalid args passed to CreateStreamOnHGlobal" ); + + if (SUCCEEDED(hr)) + { + hr = CoReleaseMarshalData(pStm.get()); + OSL_ENSURE(SUCCEEDED(hr), "CoReleaseMarshalData failed"); + } + } +} + +// IUnknown->QueryInterface + +STDMETHODIMP CAPNDataObject::QueryInterface( REFIID iid, void** ppvObject ) +{ + OSL_ASSERT( nullptr != ppvObject ); + + if ( nullptr == ppvObject ) + return E_INVALIDARG; + + HRESULT hr = E_NOINTERFACE; + *ppvObject = nullptr; + + if ( ( __uuidof( IUnknown ) == iid ) || ( __uuidof( IDataObject ) == iid ) ) + { + *ppvObject = static_cast< IUnknown* >( this ); + static_cast(*ppvObject)->AddRef( ); + hr = S_OK; + } + + return hr; +} + +// IUnknown->AddRef + +STDMETHODIMP_(ULONG) CAPNDataObject::AddRef( ) +{ + return static_cast< ULONG >( InterlockedIncrement( &m_nRefCnt ) ); +} + +// IUnknown->Release + +STDMETHODIMP_(ULONG) CAPNDataObject::Release( ) +{ + // we need a helper variable because it's not allowed to access + // a member variable after an object is destroyed + ULONG nRefCnt = static_cast< ULONG >( InterlockedDecrement( &m_nRefCnt ) ); + + if ( 0 == nRefCnt ) + delete this; + + return nRefCnt; +} + +// IDataObject->GetData + +STDMETHODIMP CAPNDataObject::GetData( FORMATETC * pFormatetc, STGMEDIUM * pmedium ) +{ + HRESULT hr = m_rIDataObjectOrg->GetData( pFormatetc, pmedium ); + + if (RPC_E_WRONG_THREAD == hr) + { + IDataObjectPtr pIDOTmp; + hr = MarshalIDataObjectIntoCurrentApartment(&pIDOTmp); + + if (SUCCEEDED(hr)) + hr = pIDOTmp->GetData(pFormatetc, pmedium); + } + return hr; +} + +// IDataObject->EnumFormatEtc + +STDMETHODIMP CAPNDataObject::EnumFormatEtc( DWORD dwDirection, IEnumFORMATETC** ppenumFormatetc ) +{ + HRESULT hr = m_rIDataObjectOrg->EnumFormatEtc(dwDirection, ppenumFormatetc); + + if (RPC_E_WRONG_THREAD == hr) + { + IDataObjectPtr pIDOTmp; + hr = MarshalIDataObjectIntoCurrentApartment(&pIDOTmp); + + if (SUCCEEDED(hr)) + hr = pIDOTmp->EnumFormatEtc(dwDirection, ppenumFormatetc); + } + return hr; +} + +// IDataObject->QueryGetData + +STDMETHODIMP CAPNDataObject::QueryGetData( FORMATETC * pFormatetc ) +{ + HRESULT hr = m_rIDataObjectOrg->QueryGetData( pFormatetc ); + + if (RPC_E_WRONG_THREAD == hr) + { + IDataObjectPtr pIDOTmp; + hr = MarshalIDataObjectIntoCurrentApartment( &pIDOTmp ); + + if (SUCCEEDED(hr)) + hr = pIDOTmp->QueryGetData(pFormatetc); + } + return hr; +} + +// IDataObject->GetDataHere + +STDMETHODIMP CAPNDataObject::GetDataHere( FORMATETC * pFormatetc, STGMEDIUM * pmedium ) +{ + HRESULT hr = m_rIDataObjectOrg->GetDataHere(pFormatetc, pmedium); + + if (RPC_E_WRONG_THREAD == hr) + { + IDataObjectPtr pIDOTmp; + hr = MarshalIDataObjectIntoCurrentApartment(&pIDOTmp); + + if (SUCCEEDED(hr)) + hr = pIDOTmp->GetDataHere(pFormatetc, pmedium); + } + return hr; +} + +// IDataObject->GetCanonicalFormatEtc + +STDMETHODIMP CAPNDataObject::GetCanonicalFormatEtc(FORMATETC * pFormatectIn, FORMATETC * pFormatetcOut) +{ + HRESULT hr = m_rIDataObjectOrg->GetCanonicalFormatEtc( pFormatectIn, pFormatetcOut ); + + if (RPC_E_WRONG_THREAD == hr) + { + IDataObjectPtr pIDOTmp; + hr = MarshalIDataObjectIntoCurrentApartment(&pIDOTmp); + + if (SUCCEEDED(hr)) + hr = pIDOTmp->GetCanonicalFormatEtc(pFormatectIn, pFormatetcOut); + } + return hr; +} + +// IDataObject->SetData + +STDMETHODIMP CAPNDataObject::SetData( FORMATETC * pFormatetc, STGMEDIUM * pmedium, BOOL fRelease ) +{ + HRESULT hr = m_rIDataObjectOrg->SetData( pFormatetc, pmedium, fRelease ); + + if (RPC_E_WRONG_THREAD == hr) + { + IDataObjectPtr pIDOTmp; + hr = MarshalIDataObjectIntoCurrentApartment(&pIDOTmp); + + if (SUCCEEDED(hr)) + hr = pIDOTmp->SetData(pFormatetc, pmedium, fRelease); + } + return hr; +} + +// IDataObject->DAdvise + +STDMETHODIMP CAPNDataObject::DAdvise( FORMATETC * pFormatetc, DWORD advf, IAdviseSink * pAdvSink, DWORD * pdwConnection ) +{ + HRESULT hr = m_rIDataObjectOrg->DAdvise(pFormatetc, advf, pAdvSink, pdwConnection); + + if (RPC_E_WRONG_THREAD == hr) + { + IDataObjectPtr pIDOTmp; + hr = MarshalIDataObjectIntoCurrentApartment(&pIDOTmp); + + if (SUCCEEDED(hr)) + hr = pIDOTmp->DAdvise(pFormatetc, advf, pAdvSink, pdwConnection); + } + return hr; +} + +// IDataObject->DUnadvise + +STDMETHODIMP CAPNDataObject::DUnadvise( DWORD dwConnection ) +{ + HRESULT hr = m_rIDataObjectOrg->DUnadvise( dwConnection ); + + if (RPC_E_WRONG_THREAD == hr) + { + IDataObjectPtr pIDOTmp; + hr = MarshalIDataObjectIntoCurrentApartment(&pIDOTmp); + + if (SUCCEEDED(hr)) + hr = pIDOTmp->DUnadvise(dwConnection); + } + return hr; +} + +// IDataObject->EnumDAdvise + +STDMETHODIMP CAPNDataObject::EnumDAdvise( IEnumSTATDATA ** ppenumAdvise ) +{ + HRESULT hr = m_rIDataObjectOrg->EnumDAdvise(ppenumAdvise); + + if (RPC_E_WRONG_THREAD == hr) + { + IDataObjectPtr pIDOTmp; + hr = MarshalIDataObjectIntoCurrentApartment(&pIDOTmp); + + if (SUCCEEDED(hr)) + hr = pIDOTmp->EnumDAdvise(ppenumAdvise); + } + return hr; +} + +// for our convenience + +CAPNDataObject::operator IDataObject*( ) +{ + return static_cast< IDataObject* >( this ); +} + +// helper function + +HRESULT CAPNDataObject::MarshalIDataObjectIntoCurrentApartment( IDataObject** ppIDataObj ) +{ + OSL_ASSERT(nullptr != ppIDataObj); + + *ppIDataObj = nullptr; + HRESULT hr = E_FAIL; + + if (m_hGlobal) + { + IStreamPtr pStm; + hr = CreateStreamOnHGlobal(m_hGlobal, KEEP_HGLOB_ON_RELEASE, &pStm); + + OSL_ENSURE(E_INVALIDARG != hr, "CreateStreamOnHGlobal with invalid args called"); + + if (SUCCEEDED(hr)) + { + hr = CoUnmarshalInterface(pStm.get(), __uuidof(IDataObject), reinterpret_cast(ppIDataObj)); + OSL_ENSURE(CO_E_NOTINITIALIZED != hr, "COM is not initialized"); + } + } + return hr; +} + +/* vim:set shiftwidth=4 softtabstop=4 expandtab: */ -- cgit v1.2.3