vcl/win/dtrans/WinClipboard.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.
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   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 <rtl/ustring.hxx>
  23 #include <sal/types.h>
  24 #include <cppuhelper/compbase.hxx>
  25 #include <com/sun/star/datatransfer/XTransferable.hpp>
  26 #include <com/sun/star/datatransfer/clipboard/XClipboardEx.hpp>
  27 #include <com/sun/star/datatransfer/clipboard/XClipboardOwner.hpp>
  28 #include <com/sun/star/datatransfer/clipboard/XClipboardListener.hpp>
  29 #include <com/sun/star/datatransfer/clipboard/XClipboardNotifier.hpp>
  30 #include <com/sun/star/datatransfer/clipboard/XSystemClipboard.hpp>
  31 #include <com/sun/star/datatransfer/clipboard/XFlushableClipboard.hpp>
  32 #include <com/sun/star/lang/XServiceInfo.hpp>
  33 #include <com/sun/star/uno/XComponentContext.hpp>
  34 #include <osl/conditn.hxx>
  35 #include <systools/win32/comtools.hxx>
  36
  37 #include "MtaOleClipb.hxx"
  38 #include "XNotifyingDataObject.hxx"
  39
  40 // implements the XClipboard[Ex] ... interfaces
  41 // for the clipboard viewer mechanism we need a static callback function
  42 // and a static member to reassociate from this static function to the
  43 // class instance
  44 // watch out: we are using only one static member variable and not a list
  45 // because we assume to be instantiated only once
  46 // this will be assured by a OneInstanceFactory of the service and not
  47 // by this class!
  48
  49 // helper class, so that the mutex is constructed
  50 // before the constructor of WeakComponentImplHelper
  51 // will be called and initialized with this mutex
  52 class CWinClipboardDummy
  53 {
  54 protected:
  55     osl::Mutex m_aMutex;
  56     osl::Mutex m_aCbListenerMutex;
  57 };
  58
  59 class CWinClipboard final
  60     : public CWinClipboardDummy,
  61       public cppu::WeakComponentImplHelper<css::datatransfer::clipboard::XSystemClipboard,
  62                                            css::datatransfer::clipboard::XFlushableClipboard,
  63                                            css::lang::XServiceInfo>
  64 {
  65     friend STDMETHODIMP_(ULONG) CXNotifyingDataObject::Release();
  66
  67     css::uno::Reference<css::uno::XComponentContext> m_xContext;
  68     const OUString m_itsName;
  69     CMtaOleClipboard m_MtaOleClipboard;
  70     CXNotifyingDataObject* m_pCurrentClipContent;
  71     com::sun::star::uno::Reference<com::sun::star::datatransfer::XTransferable> m_foreignContent;
  72     osl::Mutex m_ClipContentMutex;
  73
  74     static osl::Mutex s_aMutex;
  75     static CWinClipboard* s_pCWinClipbImpl;
  76
  77     void notifyAllClipboardListener();
  78     void onReleaseDataObject(CXNotifyingDataObject* theCaller);
  79
  80     void registerClipboardViewer();
  81     void unregisterClipboardViewer();
  82
  83     static void WINAPI onClipboardContentChanged();
  84
  85 public:
  86     CWinClipboard(const css::uno::Reference<css::uno::XComponentContext>& rxContext,
  87                   const OUString& aClipboardName);
  88     virtual ~CWinClipboard() override;
  89
  90     // XClipboard
  91     virtual css::uno::Reference<css::datatransfer::XTransferable> SAL_CALL getContents() override;
  92     virtual void SAL_CALL setContents(
  93         const css::uno::Reference<css::datatransfer::XTransferable>& xTransferable,
  94         const css::uno::Reference<css::datatransfer::clipboard::XClipboardOwner>& xClipboardOwner)
  95         override;
  96     virtual OUString SAL_CALL getName() override;
  97
  98     // XFlushableClipboard
  99     virtual void SAL_CALL flushClipboard() override;
 100
 101     // XClipboardEx
 102     virtual sal_Int8 SAL_CALL getRenderingCapabilities() override;
 103
 104     // XClipboardNotifier
 105     virtual void SAL_CALL addClipboardListener(
 106         const css::uno::Reference<css::datatransfer::clipboard::XClipboardListener>& listener)
 107         override;
 108     virtual void SAL_CALL removeClipboardListener(
 109         const css::uno::Reference<css::datatransfer::clipboard::XClipboardListener>& listener)
 110         override;
 111
 112     // XServiceInfo
 113     virtual OUString SAL_CALL getImplementationName() override;
 114     virtual sal_Bool SAL_CALL supportsService(const OUString& ServiceName) override;
 115     virtual css::uno::Sequence<OUString> SAL_CALL getSupportedServiceNames() override;
 116
 117     IDataObjectPtr getIDataObject();
 118 };
 119
 120 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */