vcl/win/dtrans/XNotifyingDataObject.hxx

   1 /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
   2 /*
   3  * This file is part of the LibreOffice project.
   4  *
   5  * This Source Code Form is subject to the terms of the Mozilla Public
   6  * License, v. 2.0. If a copy of the MPL was not distributed with this
   7  * file, You can obtain one at http://mozilla.org/MPL/2.0/.
   8  *
   9  * This file incorporates work covered by the following license notice:
  10  *
  11  *   Licensed to the Apache Software Foundation (ASF) under one or more
  12  *   contributor license agreements. See the NOTICE file distributed
  13  *   with this work for additional information regarding copyright
  14  *   ownership. The ASF licenses this file to you under the Apache
  15  *   License, Version 2.0 (the "License"); you may not use this file
  16  *   except in compliance with the License. You may obtain a copy of
  17  *   the License at http://www.apache.org/licenses/LICENSE-2.0 .
  18  */
  19
  20 #pragma once
  21
  22 #include <com/sun/star/datatransfer/XTransferable.hpp>
  23 #include <com/sun/star/datatransfer/clipboard/XClipboardOwner.hpp>
  24
  25 #if !defined WIN32_LEAN_AND_MEAN
  26 # define WIN32_LEAN_AND_MEAN
  27 #endif
  28 #include <windows.h>
  29 #include <objidl.h>
  30
  31 #include <systools/win32/comtools.hxx>
  32
  33 /*--------------------------------------------------------------------------
  34     To implement the lostOwnership mechanism cleanly we need this wrapper
  35     object
  36 ----------------------------------------------------------------------------*/
  37
  38 // forward
  39 class CWinClipboard;
  40
  41 class CXNotifyingDataObject final : public IDataObject
  42 {
  43 public:
  44     CXNotifyingDataObject(
  45         const IDataObjectPtr& aIDataObject,
  46         const css::uno::Reference< css::datatransfer::XTransferable >& aXTransferable,
  47         const css::uno::Reference< css::datatransfer::clipboard::XClipboardOwner >& aXClipOwner,
  48         CWinClipboard* const theWinClipoard);
  49
  50     virtual ~CXNotifyingDataObject() {}
  51
  52     // ole interface implementation
  53
  54     //IUnknown interface methods
  55     STDMETHODIMP           QueryInterface(REFIID iid, void** ppvObject) override;
  56     STDMETHODIMP_( ULONG ) AddRef( ) override;
  57     STDMETHODIMP_( ULONG ) Release( ) override;
  58
  59     // IDataObject interface methods
  60     STDMETHODIMP GetData( FORMATETC * pFormatetc, STGMEDIUM * pmedium ) override;
  61     STDMETHODIMP GetDataHere( FORMATETC * pFormatetc, STGMEDIUM * pmedium ) override;
  62     STDMETHODIMP QueryGetData( FORMATETC * pFormatetc ) override;
  63     STDMETHODIMP GetCanonicalFormatEtc( FORMATETC * pFormatectIn, FORMATETC * pFormatetcOut ) override;
  64     STDMETHODIMP SetData( FORMATETC * pFormatetc, STGMEDIUM * pmedium, BOOL fRelease ) override;
  65     STDMETHODIMP EnumFormatEtc( DWORD dwDirection, IEnumFORMATETC** ppenumFormatetc ) override;
  66     STDMETHODIMP DAdvise( FORMATETC * pFormatetc, DWORD advf, IAdviseSink * pAdvSink, DWORD* pdwConnection ) override;
  67     STDMETHODIMP DUnadvise( DWORD dwConnection ) override;
  68     STDMETHODIMP EnumDAdvise( IEnumSTATDATA** ppenumAdvise ) override;
  69
  70     operator IDataObject*( );
  71
  72 private:
  73     void lostOwnership( );
  74
  75     sal_Int32                                                                     m_nRefCnt;
  76     IDataObjectPtr                                                                m_aIDataObject;
  77     const css::uno::Reference< css::datatransfer::XTransferable >                 m_XTransferable;
  78     const css::uno::Reference< css::datatransfer::clipboard::XClipboardOwner >    m_XClipboardOwner;
  79     CWinClipboard* const m_pWinClipImpl;
  80
  81     friend class CWinClipboard;
  82 };
  83
  84 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */