/* -*- 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 #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 sal::systools::COMReference 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, __uuidof(IDataObject), m_rIDataObjectOrg, 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, &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) { sal::systools::COMReference 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); 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 ); 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; } // helper function HRESULT CAPNDataObject::MarshalIDataObjectIntoCurrentApartment( IDataObject** ppIDataObj ) { assert(ppIDataObj); *ppIDataObj = nullptr; HRESULT hr = E_FAIL; if (m_hGlobal) { sal::systools::COMReference 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, IID_PPV_ARGS(ppIDataObj)); OSL_ENSURE(CO_E_NOTINITIALIZED != hr, "COM is not initialized"); } } return hr; } /* vim:set shiftwidth=4 softtabstop=4 expandtab: */ -24.2-release LibreOffice 核心代码仓库文档基金会
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authorChristian Lohmaier <lohmaier+LibreOffice@googlemail.com>2024-12-20 00:26:33 +0100
committerChristian Lohmaier <lohmaier+LibreOffice@googlemail.com>2024-12-20 00:26:33 +0100
commitddb2a7ea3a8857aae619555f1a8743e430e146c9 (patch)
tree19c3943c41c1fe7547b19a476bb94eba03baeb61 /unoidl/qa/unoidl-check/other1.idl
parentb8980c98d608f6cf578c60cbf7a8583266a7a92c (diff)
Version 25.2.0.1, tag libreoffice-25.2.0.1