Source/WebCore/dom/MessageEvent.idl

/*
 * Copyright (C) 2007 Henry Mason <hmason@mac.com>
 * Copyright (C) 2011 Google 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 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 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. 
 *
 */

[
    Exposed=(Window,Worker),
    ConstructorTemplate=Event,
] interface MessageEvent : Event {
    [InitializedByEventConstructor] readonly attribute DOMString origin;
    [InitializedByEventConstructor] readonly attribute DOMString lastEventId;
    [InitializedByEventConstructor] readonly attribute EventTarget source; // May be a DOMWindow or a MessagePort.

#if defined(LANGUAGE_JAVASCRIPT) && LANGUAGE_JAVASCRIPT
    [InitializedByEventConstructor, CachedAttribute, CustomGetter] readonly attribute any data;
    [InitializedByEventConstructor] readonly attribute MessagePort[] ports;

    [Custom] void initMessageEvent(optional DOMString typeArg,
                                   optional boolean canBubbleArg,
                                   optional boolean cancelableArg,
                                   optional any dataArg,
                                   optional DOMString originArg,
                                   optional DOMString lastEventIdArg,
                                   optional DOMWindow sourceArg,
                                   optional Array messagePorts);

    [Custom] void webkitInitMessageEvent(optional DOMString typeArg,
                                         optional boolean canBubbleArg,
                                         optional boolean cancelableArg,
                                         optional any dataArg,
                                         optional DOMString originArg,
                                         optional DOMString lastEventIdArg,
                                         optional DOMWindow sourceArg,
                                         optional Array transferables);
#else
    // Code generator for ObjC bindings does not support custom bindings, thus there is no good way to
    // return a variant value. As workaround, expose the data attribute as SerializedScriptValue.
    readonly attribute SerializedScriptValue data;

    // There's no good way to expose an array via the ObjC bindings, so for now just expose a single port.
    readonly attribute MessagePort messagePort;

    void initMessageEvent(optional DOMString typeArg,
                          optional boolean canBubbleArg,
                          optional boolean cancelableArg,
                          optional SerializedScriptValue? dataArg,
                          optional DOMString originArg,
                          optional DOMString lastEventIdArg,
                          optional DOMWindow? sourceArg,
                          optional MessagePort? messagePort);
#endif

};