/*

 * Copyright (C) 2003, 2009 Apple Inc.  All rights reserved.

 *

 * Portions are Copyright (C) 1998 Netscape Communications Corporation.

 *

 * Other contributors:

 *   Robert O'Callahan <roc+@cs.cmu.edu>

 *   David Baron <dbaron@fas.harvard.edu>

 *   Christian Biesinger <cbiesinger@web.de>

 *   Randall Jesup <rjesup@wgate.com>

 *   Roland Mainz <roland.mainz@informatik.med.uni-giessen.de>

 *   Josh Soref <timeless@mac.com>

 *   Boris Zbarsky <bzbarsky@mit.edu>

 *

 * This library is free software; you can redistribute it and/or

 * modify it under the terms of the GNU Lesser General Public

 * License as published by the Free Software Foundation; either

 * version 2.1 of the License, or (at your option) any later version.

 *

 * This library 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

 * Lesser General Public License for more details.

 *

 * You should have received a copy of the GNU Lesser General Public

 * License along with this library; if not, write to the Free Software

 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA

 *

 * Alternatively, the contents of this file may be used under the terms

 * of either the Mozilla Public License Version 1.1, found at

 * http://www.mozilla.org/MPL/ (the "MPL") or the GNU General Public

 * License Version 2.0, found at http://www.fsf.org/copyleft/gpl.html

 * (the "GPL"), in which case the provisions of the MPL or the GPL are

 * applicable instead of those above.  If you wish to allow use of your

 * version of this file only under the terms of one of those two

 * licenses (the MPL or the GPL) and not to allow others to use your

 * version of this file under the LGPL, indicate your decision by

 * deletingthe provisions above and replace them with the notice and

 * other provisions required by the MPL or the GPL, as the case may be.

 * If you do not delete the provisions above, a recipient may use your

 * version of this file under any of the LGPL, the MPL or the GPL.

 */

#ifndef ScrollBehavior_h

#define ScrollBehavior_h

namespace WebCore {

enum ScrollBehavior {

    noScroll,

    alignCenter,

    alignTop,

    alignBottom, 

    alignLeft,

    alignRight,

    alignToClosestEdge

};

struct ScrollAlignment {

    static ScrollBehavior getVisibleBehavior(const ScrollAlignment& s) { return s.m_rectVisible; }

    static ScrollBehavior getPartialBehavior(const ScrollAlignment& s) { return s.m_rectPartial; }

    static ScrollBehavior getHiddenBehavior(const ScrollAlignment& s) { return s.m_rectHidden; }

    static const ScrollAlignment alignCenterIfNeeded;

    static const ScrollAlignment alignToEdgeIfNeeded;

    static const ScrollAlignment alignCenterAlways;

    static const ScrollAlignment alignTopAlways;

    static const ScrollAlignment alignBottomAlways;

    ScrollBehavior m_rectVisible;

    ScrollBehavior m_rectHidden;

    ScrollBehavior m_rectPartial;

};

}; // namespace WebCore

#endif // ScrollBehavior_h