/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* ***** BEGIN LICENSE BLOCK *****
 * Version: NPL 1.1/GPL 2.0/LGPL 2.1
 *
 * The contents of this file are subject to the Netscape Public License
 * Version 1.1 (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.mozilla.org/NPL/
 *
 * Software distributed under the License is distributed on an "AS IS" basis,
 * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
 * for the specific language governing rights and limitations under the
 * License.
 *
 * The Original Code is mozilla.org code.
 *
 * The Initial Developer of the Original Code is 
 * Netscape Communications Corporation.
 * Portions created by the Initial Developer are Copyright (C) 1998
 * the Initial Developer. All Rights Reserved.
 *
 * Contributor(s):
 *   Pierre Phaneuf <pp@ludusdesign.com>
 *   Peter Hartshorn <peter@igelaus.com.au>
 *
 * Alternatively, the contents of this file may be used under the terms of
 * either the GNU General Public License Version 2 or later (the "GPL"), or 
 * the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
 * in which case the provisions of the GPL or the LGPL are applicable instead
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 * under the terms of either the GPL or the LGPL, and not to allow others to
 * use your version of this file under the terms of the NPL, indicate your
 * decision by deleting the provisions above and replace them with the notice
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 * the provisions above, a recipient may use your version of this file under
 * the terms of any one of the NPL, the GPL or the LGPL.
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 * ***** END LICENSE BLOCK ***** */

#ifndef nsClipboard_h__
#define nsClipboard_h__

#include "nsIClipboard.h"
#include "nsITransferable.h"
#include "nsIClipboardOwner.h"
#include <nsCOMPtr.h>
#include "nsWidget.h"

#include <X11/X.h>
#include <X11/Xlib.h>

class nsITransferable;
class nsIClipboardOwner;
class nsIWidget;

/**
 * Native Xlib Clipboard wrapper
 */

class nsClipboard : public nsIClipboard
{

public:
  nsClipboard();
  virtual ~nsClipboard();

  static void Shutdown();

  //nsISupports
  NS_DECL_ISUPPORTS

  // nsIClipboard
  NS_DECL_NSICLIPBOARD

protected:
  void Init(void);

  static nsEventStatus PR_CALLBACK Callback(nsGUIEvent *event);
  PRBool  mIgnoreEmptyNotification;
  inline nsITransferable *GetTransferable(PRInt32 aWhichClipboard);
  NS_IMETHOD SetNativeClipboardData(PRInt32 aWhichClipboard);

private:
  static nsITransferable*     mTransferable; // strong reference
  nsCOMPtr<nsIClipboardOwner> mSelectionOwner;
  nsCOMPtr<nsIClipboardOwner> mGlobalOwner;
  nsCOMPtr<nsITransferable>   mSelectionTransferable;
  nsCOMPtr<nsITransferable>   mGlobalTransferable;


  // Used for communicating pasted data
  // from the asynchronous X routines back to a blocking paste:
  PRBool mBlocking;

  static Window sWindow;
  nsWidget *sWidget;
  static Display *sDisplay;

};

#endif // nsClipboard_h__