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/*
* Copyright (C) 2007 Henry Mason (hmason@mac.com)
* Copyright (C) 2003-2018 Apple 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.
*
*/
#pragma once
#include "Event.h"
#include "JSValueInWrappedObject.h"
#include "MessagePort.h"
#include "SerializedScriptValue.h"
#include "ServiceWorker.h"
#include "WindowProxy.h"
#include <variant>
namespace WebCore {
class Blob;
using MessageEventSource = std::variant<RefPtr<WindowProxy>, RefPtr<MessagePort>, RefPtr<ServiceWorker>>;
class MessageEvent final : public Event {
WTF_MAKE_TZONE_OR_ISO_ALLOCATED(MessageEvent);
public:
struct JSValueTag { };
using DataType = std::variant<JSValueTag, Ref<SerializedScriptValue>, String, Ref<Blob>, Ref<ArrayBuffer>>;
static Ref<MessageEvent> create(const AtomString& type, DataType&&, const String& origin = { }, const String& lastEventId = { }, std::optional<MessageEventSource>&& = std::nullopt, Vector<Ref<MessagePort>>&& = { });
static Ref<MessageEvent> create(DataType&&, const String& origin = { }, const String& lastEventId = { }, std::optional<MessageEventSource>&& = std::nullopt, Vector<Ref<MessagePort>>&& = { });
static Ref<MessageEvent> createForBindings();
struct MessageEventWithStrongData {
Ref<MessageEvent> event;
JSC::Strong<JSC::JSObject> strongWrapper; // Keep the wrapper alive until the event is fired, since it is what keeps `data` alive.
};
static MessageEventWithStrongData create(JSC::JSGlobalObject&, Ref<SerializedScriptValue>&&, const String& origin = { }, const String& lastEventId = { }, std::optional<MessageEventSource>&& = std::nullopt, Vector<Ref<MessagePort>>&& = { });
struct Init : EventInit {
JSC::JSValue data;
String origin;
String lastEventId;
std::optional<MessageEventSource> source;
Vector<Ref<MessagePort>> ports;
};
static Ref<MessageEvent> create(const AtomString& type, Init&&, IsTrusted = IsTrusted::No);
virtual ~MessageEvent();
void initMessageEvent(const AtomString& type, bool canBubble, bool cancelable, JSC::JSValue data, const String& origin, const String& lastEventId, std::optional<MessageEventSource>&&, Vector<Ref<MessagePort>>&&);
const String& origin() const { return m_origin; }
const String& lastEventId() const { return m_lastEventId; }
const std::optional<MessageEventSource>& source() const { return m_source; }
const Vector<Ref<MessagePort>>& ports() const { return m_ports; }
const DataType& data() const
{
IGNORE_CLANG_WARNINGS_BEGIN("thread-safety-reference-return")
return m_data;
IGNORE_CLANG_WARNINGS_END
}
JSValueInWrappedObject& jsData() { return m_jsData; }
JSValueInWrappedObject& cachedData() { return m_cachedData; }
JSValueInWrappedObject& cachedPorts() { return m_cachedPorts; }
size_t memoryCost() const;
private:
MessageEvent();
MessageEvent(const AtomString& type, Init&&, IsTrusted);
MessageEvent(const AtomString& type, DataType&&, const String& origin, const String& lastEventId = { }, std::optional<MessageEventSource>&& = std::nullopt, Vector<Ref<MessagePort>>&& = { });
DataType m_data WTF_GUARDED_BY_LOCK(m_concurrentDataAccessLock);
String m_origin;
String m_lastEventId;
std::optional<MessageEventSource> m_source;
Vector<Ref<MessagePort>> m_ports;
JSValueInWrappedObject m_jsData;
JSValueInWrappedObject m_cachedData;
JSValueInWrappedObject m_cachedPorts;
mutable Lock m_concurrentDataAccessLock;
};
} // namespace WebCore
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