/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* ***** BEGIN LICENSE BLOCK *****
 * Version: MPL 1.1/GPL 2.0/LGPL 2.1
 *
 * The contents of this file are subject to the Mozilla 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/MPL/
 *
 * 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 Communicator client 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):
 *   Original Author: David W. Hyatt (hyatt@netscape.com)
 *
 * Alternatively, the contents of this file may be used under the terms of
 * either of 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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 * the provisions above, a recipient may use your version of this file under
 * the terms of any one of the MPL, the GPL or the LGPL.
 *
 * ***** END LICENSE BLOCK ***** */

#ifndef nsIScrollbarFrame_h___
#define nsIScrollbarFrame_h___

// {660e5ed6-1cf7-47ff-b094-c588c21986e8}
#define NS_ISCROLLBARFRAME_IID \
{ 0x660e5ed6, 0x1cf7, 0x47ff, { 0xb0, 0x94, 0xc5, 0x88, 0xc2, 0x19, 0x86, 0xe8 } }

static NS_DEFINE_IID(kIScrollbarFrameIID,     NS_ISCROLLBARFRAME_IID);

class nsIScrollbarMediator;

class nsIScrollbarFrame : public nsISupports {

public:
  NS_DECLARE_STATIC_IID_ACCESSOR(NS_ISCROLLBARFRAME_IID)
  
  // Sets the scrollbar mediator content. We will try to get its primary frame
  // and then QI that to nsIScrollbarMediator as necessary.
  virtual void SetScrollbarMediatorContent(nsIContent* aMediator) = 0;

  // Do NOT hold on to this.
  virtual nsIScrollbarMediator* GetScrollbarMediator() = 0;
};

NS_DEFINE_STATIC_IID_ACCESSOR(nsIScrollbarFrame, NS_ISCROLLBARFRAME_IID)

#endif