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// Copyright 2017 The Cobalt Authors. All Rights Reserved.
//
// Licensed under the Apache License, Version 2.0 (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.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
// https://www.w3.org/TR/2016/WD-uievents-20160804/#interface-wheelevent
// https://www.w3.org/TR/2016/WD-uievents-20160804/#idl-interface-WheelEvent-initializers
[Constructor(DOMString type, optional WheelEventInit eventInitDict)]
interface WheelEvent : MouseEvent {
// DeltaModeCode
const unsigned long DOM_DELTA_PIXEL = 0x00;
const unsigned long DOM_DELTA_LINE = 0x01;
const unsigned long DOM_DELTA_PAGE = 0x02;
readonly attribute double deltaX;
readonly attribute double deltaY;
readonly attribute double deltaZ;
readonly attribute unsigned long deltaMode;
void initWheelEvent(DOMString type,
optional boolean bubbles = false,
optional boolean cancelable = false,
optional Window? view = null,
optional long detail = 0,
optional long screenX = 0,
optional long screenY = 0,
optional long clientX = 0,
optional long clientY = 0,
optional unsigned short button = 0,
optional EventTarget? relatedTarget = null,
optional DOMString modifiersList = "",
optional double deltaX = 0,
optional double deltaY = 0,
optional double deltaZ = 0,
optional unsigned long deltaMode = 0);
};