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.
   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 <rtl/ustring.hxx>
  23 #include <sal/types.h>
  24 #include <comphelper/compbase.hxx>
  25 #include <comphelper/interfacecontainer4.hxx>
  26 #include <com/sun/star/datatransfer/XTransferable.hpp>
  27 #include <com/sun/star/datatransfer/clipboard/XClipboardEx.hpp>
  28 #include <com/sun/star/datatransfer/clipboard/XClipboardOwner.hpp>
  29 #include <com/sun/star/datatransfer/clipboard/XClipboardListener.hpp>
  30 #include <com/sun/star/datatransfer/clipboard/XClipboardNotifier.hpp>
  31 #include <com/sun/star/datatransfer/clipboard/XSystemClipboard.hpp>
  32 #include <com/sun/star/datatransfer/clipboard/XFlushableClipboard.hpp>
  33 #include <com/sun/star/lang/XServiceInfo.hpp>
  34 #include <com/sun/star/uno/XComponentContext.hpp>
  35 #include <osl/conditn.hxx>
  36 #include <systools/win32/comtools.hxx>
  37
  38 #include "MtaOleClipb.hxx"
  39 #include "XNotifyingDataObject.hxx"
  40
  41 // implements the XClipboard[Ex] ... interfaces
  42 // for the clipboard viewer mechanism we need a static callback function
  43 // and a static member to reassociate from this static function to the
  44 // class instance
  45 // watch out: we are using only one static member variable and not a list
  46 // because we assume to be instantiated only once
  47 // this will be assured by a OneInstanceFactory of the service and not
  48 // by this class!
  49
  50 class CWinClipboard final
  51     : public comphelper::WeakComponentImplHelper<css::datatransfer::clipboard::XSystemClipboard,
  52                                                  css::datatransfer::clipboard::XFlushableClipboard,
  53                                                  css::lang::XServiceInfo>
  54 {
  55     friend CXNotifyingDataObject::~CXNotifyingDataObject();
  56
  57     css::uno::Reference<css::uno::XComponentContext> m_xContext;
  58     const OUString m_itsName;
  59     CMtaOleClipboard m_MtaOleClipboard;
  60     CXNotifyingDataObject* m_pNewOwnClipContent = nullptr; // until onClipboardContentChanged
  61     CXNotifyingDataObject* m_pCurrentOwnClipContent = nullptr;
  62     css::uno::Reference<css::datatransfer::XTransferable> m_foreignContent;
  63     comphelper::OInterfaceContainerHelper4<css::datatransfer::clipboard::XClipboardListener>
  64         maClipboardListeners;
  65
  66     CXNotifyingDataObject* getOwnClipContent() const;
  67
  68     void handleClipboardContentChanged();
  69     void onReleaseDataObject(CXNotifyingDataObject& theCaller);
  70
  71     void registerClipboardViewer();
  72     void unregisterClipboardViewer();
  73
  74     static void WINAPI onClipboardContentChanged();
  75
  76     css::uno::Reference<css::datatransfer::XTransferable> getContents_noLock();
  77
  78 public:
  79     CWinClipboard(const css::uno::Reference<css::uno::XComponentContext>& rxContext,
  80                   const OUString& aClipboardName);
  81     virtual ~CWinClipboard() override;
  82
  83     // XClipboard
  84     virtual css::uno::Reference<css::datatransfer::XTransferable> SAL_CALL getContents() override;
  85     virtual void SAL_CALL setContents(
  86         const css::uno::Reference<css::datatransfer::XTransferable>& xTransferable,
  87         const css::uno::Reference<css::datatransfer::clipboard::XClipboardOwner>& xClipboardOwner)
  88         override;
  89     virtual OUString SAL_CALL getName() override;
  90
  91     // XFlushableClipboard
  92     virtual void SAL_CALL flushClipboard() override;
  93
  94     // XClipboardEx
  95     virtual sal_Int8 SAL_CALL getRenderingCapabilities() override;
  96
  97     // XClipboardNotifier
  98     virtual void SAL_CALL addClipboardListener(
  99         const css::uno::Reference<css::datatransfer::clipboard::XClipboardListener>& listener)
 100         override;
 101     virtual void SAL_CALL removeClipboardListener(
 102         const css::uno::Reference<css::datatransfer::clipboard::XClipboardListener>& listener)
 103         override;
 104
 105     // XServiceInfo
 106     virtual OUString SAL_CALL getImplementationName() override;
 107     virtual sal_Bool SAL_CALL supportsService(const OUString& ServiceName) override;
 108     virtual css::uno::Sequence<OUString> SAL_CALL getSupportedServiceNames() override;
 109
 110     IDataObjectPtr getIDataObject();
 111
 112     virtual void disposing(std::unique_lock<std::mutex>&) override;
 113 };
 114
 115 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */