/*
 * Copyright (C) 2006, 2007, 2009, 2011 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.
 */

// https://dom.spec.whatwg.org/#interface-event

[
    Constructor(DOMString type, optional EventInit eventInitDict),
    Exposed=(Window,Worker),
] interface Event {
    readonly attribute DOMString type;
    readonly attribute EventTarget? target;
    readonly attribute EventTarget? currentTarget;

    const unsigned short NONE = 0;
    const unsigned short CAPTURING_PHASE = 1;
    const unsigned short AT_TARGET = 2;
    const unsigned short BUBBLING_PHASE = 3;
    readonly attribute unsigned short eventPhase;

    void stopPropagation();
    void stopImmediatePropagation();

    readonly attribute boolean bubbles;
    readonly attribute boolean cancelable;
    void preventDefault();
    readonly attribute boolean defaultPrevented;

    [RuntimeEnabled=ShadowDOMV1, MeasureAs=EventComposed] readonly attribute boolean composed;
    [RuntimeEnabled=ShadowDOMV1, MeasureAs=EventRelatedTargetScoped] readonly attribute boolean relatedTargetScoped;

    [Unforgeable] readonly attribute boolean isTrusted;

    // TODO(majidvp): At the moment the actual return value type can either
    // be: 
    //  - DOMTimeStamp (i.e. long long): legacy type
    //  - DOMHighResTimeStamp (i.e. double):  HighResEventTimeStamp REF is 
    //    enabled 
    // Below IDL definition uses DOMHighResTimeStamp because all DOMTimeStamp
    // values can be represented in double type without any loss of precision.
    // Once the feature is enabled by default the return value type will always
    // match the definition here.
    [CallWith=ScriptState] readonly attribute DOMHighResTimeStamp timeStamp;

    // FIXME: initEvent()'s arguments should not be optional.
    [Measure] void initEvent([Default=Undefined] optional DOMString type,
                             [Default=Undefined] optional boolean bubbles,
                             [Default=Undefined] optional boolean cancelable);

    // Shadow DOM
    // https://w3c.github.io/webcomponents/spec/shadow/#extensions-to-event-interface
    [MeasureAs=EventPath, CallWith=ScriptState] readonly attribute EventTarget[] path;
    [RuntimeEnabled=ShadowDOMV1, MeasureAs=EventComposedPath, CallWith=ScriptState] sequence<EventTarget> composedPath();

    // Non-standard APIs
    const unsigned short MOUSEDOWN = 1;
    const unsigned short MOUSEUP   = 2;
    const unsigned short MOUSEOVER = 4;
    const unsigned short MOUSEOUT  = 8;
    const unsigned short MOUSEMOVE = 16;
    const unsigned short MOUSEDRAG = 32;
    const unsigned short CLICK     = 64;
    const unsigned short DBLCLICK  = 128;
    const unsigned short KEYDOWN   = 256;
    const unsigned short KEYUP     = 512;
    const unsigned short KEYPRESS  = 1024;
    const unsigned short DRAGDROP  = 2048;
    const unsigned short FOCUS     = 4096;
    const unsigned short BLUR      = 8192;
    const unsigned short SELECT    = 16384;
    const unsigned short CHANGE    = 32768;
    [MeasureAs=EventSrcElement] readonly attribute EventTarget srcElement;
    [MeasureAs=EventReturnValue, CallWith=ExecutionContext, ImplementedAs=legacyReturnValue] attribute boolean returnValue;
    [MeasureAs=EventCancelBubble, CallWith=ExecutionContext] attribute boolean cancelBubble;
};