1 files changed, 84 insertions, 0 deletions
diff --git a/vcl/win/dtrans/XNotifyingDataObject.hxx b/vcl/win/dtrans/XNotifyingDataObject.hxx
new file mode 100644
index 0000000000..408413a5de
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+++ b/vcl/win/dtrans/XNotifyingDataObject.hxx
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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 .
+ */
+
+#pragma once
+
+#include <com/sun/star/datatransfer/XTransferable.hpp>
+#include <com/sun/star/datatransfer/clipboard/XClipboardOwner.hpp>
+
+#if !defined WIN32_LEAN_AND_MEAN
+# define WIN32_LEAN_AND_MEAN
+#endif
+#include <windows.h>
+#include <objidl.h>
+
+#include <systools/win32/comtools.hxx>
+
+/*--------------------------------------------------------------------------
+    To implement the lostOwnership mechanism cleanly we need this wrapper
+    object
+----------------------------------------------------------------------------*/
+
+// forward
+class CWinClipboard;
+
+class CXNotifyingDataObject final : public IDataObject
+{
+public:
+    CXNotifyingDataObject(
+        const IDataObjectPtr& aIDataObject,
+        const css::uno::Reference< css::datatransfer::XTransferable >& aXTransferable,
+        const css::uno::Reference< css::datatransfer::clipboard::XClipboardOwner >& aXClipOwner,
+        CWinClipboard* const theWinClipoard);
+
+    virtual ~CXNotifyingDataObject() {}
+
+    // ole interface implementation
+
+    //IUnknown interface methods
+    STDMETHODIMP           QueryInterface(REFIID iid, void** ppvObject) override;
+    STDMETHODIMP_( ULONG ) AddRef( ) override;
+    STDMETHODIMP_( ULONG ) Release( ) override;
+
+    // IDataObject interface methods
+    STDMETHODIMP GetData( FORMATETC * pFormatetc, STGMEDIUM * pmedium ) override;
+    STDMETHODIMP GetDataHere( FORMATETC * pFormatetc, STGMEDIUM * pmedium ) override;
+    STDMETHODIMP QueryGetData( FORMATETC * pFormatetc ) override;
+    STDMETHODIMP GetCanonicalFormatEtc( FORMATETC * pFormatectIn, FORMATETC * pFormatetcOut ) override;
+    STDMETHODIMP SetData( FORMATETC * pFormatetc, STGMEDIUM * pmedium, BOOL fRelease ) override;
+    STDMETHODIMP EnumFormatEtc( DWORD dwDirection, IEnumFORMATETC** ppenumFormatetc ) override;
+    STDMETHODIMP DAdvise( FORMATETC * pFormatetc, DWORD advf, IAdviseSink * pAdvSink, DWORD* pdwConnection ) override;
+    STDMETHODIMP DUnadvise( DWORD dwConnection ) override;
+    STDMETHODIMP EnumDAdvise( IEnumSTATDATA** ppenumAdvise ) override;
+
+    operator IDataObject*( );
+
+private:
+    void lostOwnership( );
+
+    sal_Int32                                                                     m_nRefCnt;
+    IDataObjectPtr                                                                m_aIDataObject;
+    const css::uno::Reference< css::datatransfer::XTransferable >                 m_XTransferable;
+    const css::uno::Reference< css::datatransfer::clipboard::XClipboardOwner >    m_XClipboardOwner;
+    CWinClipboard* const m_pWinClipImpl;
+
+    friend class CWinClipboard;
+};
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */