/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*-
 *
 * 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 Netscape are
 * Copyright (C) 1998 Netscape Communications Corporation. All
 * Rights Reserved.
 *
 * Contributor(s): 
 */

#ifndef nsClipboard_h__
#define nsClipboard_h__

#include "nsBaseClipboard.h"

class nsITransferable;
class nsIClipboardOwner;
class nsIWidget;

/**
 * Native Gtk Clipboard wrapper
 */

class nsClipboard : public nsBaseClipboard
{

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

  //nsISupports
  NS_DECL_ISUPPORTS_INHERITED

  // nsIClipboard  
  NS_IMETHOD ForceDataToClipboard();

protected:
  NS_IMETHOD        SetNativeClipboardData();
  NS_IMETHOD        GetNativeClipboardData(nsITransferable * aTransferable);


  void              CreateInvisibleWindow(void);

  PRBool            mIgnoreEmptyNotification;

  static Window     *sWindow;

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

  void SelectionReceiver(GtkWidget *aWidget,
                         GtkSelectionData *aSelectionData);

  static void SelectionGetCB(GtkWidget *widget, 
                             GtkSelectionData *selection_data,
                             guint      /*info*/,
                             guint      /*time*/,
                             gpointer data);

  static void SelectionClearCB(GtkWidget *widget, 
                               GdkEventSelection *event,
                               gpointer data );

  static void SelectionRequestCB(GtkWidget *aWidget,
                             GtkSelectionData *aSelectionData,
                             gpointer aData);
  
  static void SelectionReceivedCB(GtkWidget *aWidget,
                                  GtkSelectionData *aSelectionData,
                                  gpointer aData);

  static void SelectionNotifyCB(GtkWidget *aWidget,
                                GtkSelectionData *aSelectionData,
                                gpointer aData);
  

};

#endif // nsClipboard_h__
