/*

 * Copyright (C) 2006 Apple Computer, Inc.  All rights reserved.

 *

 * Redistribution and use in source and binary forms, with or without

 * modification, are permitted provided that the following conditions

 * are met:

 * 1. Redistributions of source code must retain the above copyright

 *    notice, this list of conditions and the following disclaimer.

 * 2. Redistributions in binary form must reproduce the above copyright

 *    notice, this list of conditions and the following disclaimer in the

 *    documentation and/or other materials provided with the distribution.

 *

 * THIS SOFTWARE IS PROVIDED BY APPLE COMPUTER, INC. ``AS IS'' AND ANY

 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE

 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR

 * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL APPLE COMPUTER, INC. OR

 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,

 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,

 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR

 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY

 * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT

 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE

 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 

 */

#ifndef ScrollTypes_h

#define ScrollTypes_h

namespace WebCore {

    enum ScrollDirection {

        ScrollUp,

        ScrollDown,

        ScrollLeft,

        ScrollRight

    };

    enum ScrollGranularity {

        ScrollByLine,

        ScrollByPage,

        ScrollByDocument,

        ScrollByPixel

    };

    enum ScrollbarOrientation { HorizontalScrollbar, VerticalScrollbar };

    enum ScrollbarMode { ScrollbarAuto, ScrollbarAlwaysOff, ScrollbarAlwaysOn };

    enum ScrollbarControlSize { RegularScrollbar, SmallScrollbar };

    typedef unsigned ScrollbarControlState;

    enum ScrollbarControlStateMask {

        ActiveScrollbarState = 1,

        EnabledScrollbarState = 1 << 1,

        PressedScrollbarState = 1 << 2,

    };

    enum ScrollbarPart {

        NoPart = 0,

        BackButtonStartPart = 1,

        ForwardButtonStartPart = 1 << 1,

        BackTrackPart = 1 << 2,

        ThumbPart = 1 << 3,

        ForwardTrackPart = 1 << 4,

        BackButtonEndPart = 1 << 5,

        ForwardButtonEndPart = 1 << 6,

        ScrollbarBGPart = 1 << 7,

        TrackBGPart = 1 << 8,

        AllParts = 0xffffffff,

    };

    enum ScrollbarButtonsPlacement {

        ScrollbarButtonsNone,

        ScrollbarButtonsSingle,

        ScrollbarButtonsDoubleStart,

        ScrollbarButtonsDoubleEnd,

        ScrollbarButtonsDoubleBoth

    };

    typedef unsigned ScrollbarControlPartMask;

}

#endif