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diff --git a/src/lib/platform/OSXClipboard.h b/src/lib/platform/OSXClipboard.h
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+++ b/src/lib/platform/OSXClipboard.h
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+/*
+ * barrier -- mouse and keyboard sharing utility
+ * Copyright (C) 2012-2016 Symless Ltd.
+ * Copyright (C) 2004 Chris Schoeneman
+ * 
+ * This package is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * found in the file LICENSE that should have accompanied this file.
+ * 
+ * This package is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#pragma once
+
+#include "barrier/IClipboard.h"
+
+#include <Carbon/Carbon.h>
+#include <vector>
+
+class IOSXClipboardConverter;
+
+//! OS X clipboard implementation
+class OSXClipboard : public IClipboard {
+public:
+    OSXClipboard();
+    virtual ~OSXClipboard();
+
+    //! Test if clipboard is owned by barrier
+    static bool            isOwnedByBarrier();
+
+    // IClipboard overrides
+    virtual bool        empty();
+    virtual void        add(EFormat, const String& data);
+    virtual bool        open(Time) const;
+    virtual void        close() const;
+    virtual Time        getTime() const;
+    virtual bool        has(EFormat) const;
+    virtual String        get(EFormat) const;
+
+    bool                synchronize();
+private:
+    void                clearConverters();
+
+private:
+    typedef std::vector<IOSXClipboardConverter*> ConverterList;
+
+    mutable Time        m_time;
+    ConverterList        m_converters;
+    PasteboardRef        m_pboard;
+};
+
+//! Clipboard format converter interface
+/*!
+This interface defines the methods common to all Scrap book format
+*/
+class IOSXClipboardConverter : public IInterface {
+public:
+    //! @name accessors
+    //@{
+
+    //! Get clipboard format
+    /*!
+    Return the clipboard format this object converts from/to.
+    */
+    virtual IClipboard::EFormat
+                        getFormat() const = 0;
+
+    //! returns the scrap flavor type that this object converts from/to
+    virtual CFStringRef
+                        getOSXFormat() const = 0;
+
+    //! Convert from IClipboard format
+    /*!
+    Convert from the IClipboard format to the Carbon scrap format.
+    The input data must be in the IClipboard format returned by
+    getFormat().  The return data will be in the scrap
+    format returned by getOSXFormat().
+    */
+    virtual String        fromIClipboard(const String&) const = 0;
+
+    //! Convert to IClipboard format
+    /*!
+    Convert from the carbon scrap format to the IClipboard format
+    (i.e., the reverse of fromIClipboard()).
+    */
+    virtual String        toIClipboard(const String&) const = 0;
+
+    //@}
+};