/*
 * Copyright (C) 2006, 2007, 2010 Apple Inc. All rights reserved.
 * Copyright (C) 2006 Samuel Weinig <sam.weinig@gmail.com>
 *
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Library General Public
 * License as published by the Free Software Foundation; either
 * version 2 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
 * Library General Public License for more details.
 *
 * You should have received a copy of the GNU Library General Public License
 * along with this library; see the file COPYING.LIB.  If not, write to
 * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
 * Boston, MA 02110-1301, USA.
 */

[
    ConstructorTemplate=Event
] interface WheelEvent : MouseEvent {
    const unsigned long              DOM_DELTA_PIXEL = 0x00;
    const unsigned long              DOM_DELTA_LINE  = 0x01;
    const unsigned long              DOM_DELTA_PAGE  = 0x02;

    [InitializedByEventConstructor] readonly attribute long wheelDeltaX;
    [InitializedByEventConstructor] readonly attribute long wheelDeltaY;
    [InitializedByEventConstructor] readonly attribute unsigned long deltaMode;

    readonly attribute long wheelDelta;

    // WebKit Extension
    readonly attribute boolean webkitDirectionInvertedFromDevice;

    void initWebKitWheelEvent([Optional=DefaultIsUndefined] long wheelDeltaX,
                              [Optional=DefaultIsUndefined] long wheelDeltaY, 
                              [Optional=DefaultIsUndefined] DOMWindow view, 
                              [Optional=DefaultIsUndefined] long screenX,
                              [Optional=DefaultIsUndefined] long screenY,
                              [Optional=DefaultIsUndefined] long clientX,
                              [Optional=DefaultIsUndefined] long clientY,
                              [Optional=DefaultIsUndefined] boolean ctrlKey,
                              [Optional=DefaultIsUndefined] boolean altKey,
                              [Optional=DefaultIsUndefined] boolean shiftKey,
                              [Optional=DefaultIsUndefined] boolean metaKey);
};