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diff --git a/vcl/osx/clipboard.hxx b/vcl/osx/clipboard.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 "DataFlavorMapping.hxx"
+#include <rtl/ustring.hxx>
+#include <sal/types.h>
+#include <cppuhelper/compbase.hxx>
+#include <com/sun/star/datatransfer/XTransferable.hpp>
+#include <com/sun/star/datatransfer/clipboard/XClipboardEx.hpp>
+#include <com/sun/star/datatransfer/clipboard/XClipboardOwner.hpp>
+#include <com/sun/star/datatransfer/clipboard/XClipboardListener.hpp>
+#include <com/sun/star/datatransfer/clipboard/XClipboardNotifier.hpp>
+#include <com/sun/star/datatransfer/clipboard/XSystemClipboard.hpp>
+#include <com/sun/star/datatransfer/XMimeContentTypeFactory.hpp>
+#include <com/sun/star/datatransfer/clipboard/XFlushableClipboard.hpp>
+#include <com/sun/star/lang/XServiceInfo.hpp>
+#include <cppuhelper/basemutex.hxx>
+#include <com/sun/star/lang/XMultiComponentFactory.hpp>
+
+#include <list>
+
+#include <premac.h>
+#import <Cocoa/Cocoa.h>
+#include <postmac.h>
+
+class AquaClipboard;
+
+@interface EventListener : NSObject
+{
+     AquaClipboard* pAquaClipboard;
+}
+
+// Init the pasteboard change listener with a reference to the OfficeClipboard
+// instance
+- (EventListener*)initWithAquaClipboard: (AquaClipboard*) pcb;
+
+// Promise resolver function
+- (void)pasteboard:(NSPasteboard*)sender provideDataForType:(const NSString *)type;
+
+-(void)applicationDidBecomeActive:(NSNotification*)aNotification;
+
+-(void)disposing;
+@end
+
+class AquaClipboard : public ::cppu::BaseMutex,
+                      public ::cppu::WeakComponentImplHelper<css::datatransfer::clipboard::XSystemClipboard,
+                                                             css::datatransfer::clipboard::XFlushableClipboard,
+                                                             css::lang::XServiceInfo>
+{
+public:
+  /* Create a clipboard instance.
+
+     @param pasteboard
+     If not equal NULL the instance will be instantiated with the provided
+     pasteboard reference and 'bUseSystemClipboard' will be ignored
+
+     @param bUseSystemClipboard
+     If 'pasteboard' is NULL 'bUseSystemClipboard' determines whether the
+     system clipboard will be created (bUseSystemClipboard == true) or if
+     the DragPasteboard if bUseSystemClipboard == false
+   */
+  AquaClipboard(NSPasteboard* pasteboard,
+                bool bUseSystemClipboard);
+
+  virtual ~AquaClipboard() override;
+  AquaClipboard(const AquaClipboard&) = delete;
+  AquaClipboard& operator=(const AquaClipboard&) = delete;
+
+  // XClipboard
+
+  virtual css::uno::Reference<css::datatransfer::XTransferable> SAL_CALL getContents() override;
+
+  virtual void SAL_CALL setContents(css::uno::Reference<css::datatransfer::XTransferable> const & xTransferable,
+                                    css::uno::Reference<css::datatransfer::clipboard::XClipboardOwner> const & xClipboardOwner) override;
+
+  virtual OUString SAL_CALL getName() override;
+
+  // XClipboardEx
+
+  virtual sal_Int8 SAL_CALL getRenderingCapabilities() override;
+
+  // XClipboardNotifier
+
+  virtual void SAL_CALL addClipboardListener(css::uno::Reference<css::datatransfer::clipboard::XClipboardListener> const & listener) override;
+  virtual void SAL_CALL removeClipboardListener(css::uno::Reference<css::datatransfer::clipboard::XClipboardListener> const & listener) override;
+
+  // XFlushableClipboard
+
+  virtual void SAL_CALL flushClipboard() override;
+
+  // XServiceInfo
+
+  virtual OUString SAL_CALL getImplementationName() override;
+  virtual sal_Bool SAL_CALL supportsService( const OUString& ServiceName ) override;
+  virtual css::uno::Sequence< OUString > SAL_CALL getSupportedServiceNames() override;
+
+  /* Get a reference to the used pastboard.
+   */
+  NSPasteboard* getPasteboard() const;
+
+  /* Notify the current clipboard owner that he is no longer the clipboard owner.
+   */
+  void fireLostClipboardOwnershipEvent(css::uno::Reference<css::datatransfer::clipboard::XClipboardOwner> const & oldOwner,
+                                       css::uno::Reference<css::datatransfer::XTransferable> const & oldContent);
+
+  void pasteboardChangedOwner();
+
+  void provideDataForType(NSPasteboard* sender, const NSString* type);
+
+  void applicationDidBecomeActive(NSNotification* aNotification);
+
+private:
+
+  /* Notify all registered XClipboardListener that the clipboard content
+     has changed.
+  */
+  void fireClipboardChangedEvent();
+
+private:
+  css::uno::Reference<css::datatransfer::XMimeContentTypeFactory> mrXMimeCntFactory;
+  std::list<css::uno::Reference<css::datatransfer::clipboard::XClipboardListener>> mClipboardListeners;
+  css::uno::Reference<css::datatransfer::XTransferable> mXClipboardContent;
+  css::uno::Reference<css::datatransfer::clipboard::XClipboardOwner> mXClipboardOwner;
+  DataFlavorMapperPtr_t mpDataFlavorMapper;
+  bool mIsSystemPasteboard;
+  NSPasteboard* mPasteboard;
+  int mPasteboardChangeCount;
+  EventListener* mEventListener;
+};
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */