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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.
*
*/
#include "root.h"
#include "config.h"
#include "MessageEvent.h"
// #include "Blob.h"
#include "EventNames.h"
#include "JSDOMConvert.h"
#include "JSMessageEvent.h"
#include <JavaScriptCore/JSCInlines.h>
// #include <wtf/IsoMallocInlines.h>
namespace WebCore {
using namespace JSC;
WTF_MAKE_ISO_ALLOCATED_IMPL(MessageEvent);
MessageEvent::MessageEvent() = default;
inline MessageEvent::MessageEvent(const AtomString& type, Init&& initializer, IsTrusted isTrusted)
: Event(type, initializer, isTrusted)
, m_data(JSValueTag {})
, m_origin(initializer.origin)
, m_lastEventId(initializer.lastEventId)
, m_source(WTFMove(initializer.source))
, m_ports(WTFMove(initializer.ports))
, m_jsData(initializer.data)
{
}
inline MessageEvent::MessageEvent(const AtomString& type, DataType&& data, const String& origin, const String& lastEventId, std::optional<MessageEventSource>&& source, Vector<RefPtr<MessagePort>>&& ports)
: Event(type, CanBubble::No, IsCancelable::No)
, m_data(WTFMove(data))
, m_origin(origin)
, m_lastEventId(lastEventId)
, m_source(WTFMove(source))
, m_ports(WTFMove(ports))
{
}
Ref<MessageEvent> MessageEvent::create(const AtomString& type, DataType&& data, const String& origin, const String& lastEventId, std::optional<MessageEventSource>&& source, Vector<RefPtr<MessagePort>>&& ports)
{
return adoptRef(*new MessageEvent(type, WTFMove(data), origin, lastEventId, WTFMove(source), WTFMove(ports)));
}
Ref<MessageEvent> MessageEvent::create(DataType&& data, const String& origin, const String& lastEventId, std::optional<MessageEventSource>&& source, Vector<RefPtr<MessagePort>>&& ports)
{
return create(eventNames().messageEvent, WTFMove(data), origin, lastEventId, WTFMove(source), WTFMove(ports));
}
Ref<MessageEvent> MessageEvent::createForBindings()
{
return adoptRef(*new MessageEvent);
}
Ref<MessageEvent> MessageEvent::create(const AtomString& type, Init&& initializer, IsTrusted isTrusted)
{
return adoptRef(*new MessageEvent(type, WTFMove(initializer), isTrusted));
}
MessageEvent::~MessageEvent() = default;
auto MessageEvent::create(JSC::JSGlobalObject& globalObject, Ref<SerializedScriptValue>&& data, std::optional<MessageEventSource>&& source, Vector<RefPtr<MessagePort>>&& ports) -> MessageEventWithStrongData
{
return create(globalObject, WTFMove(data), {}, {}, WTFMove(source), WTFMove(ports));
}
auto MessageEvent::create(JSC::JSGlobalObject& globalObject, Ref<SerializedScriptValue>&& data, const String& origin, const String& lastEventId, std::optional<MessageEventSource>&& source, Vector<RefPtr<MessagePort>>&& ports) -> MessageEventWithStrongData
{
auto& vm = globalObject.vm();
// Locker<JSC::JSLock> locker(vm.apiLock());
bool didFail = false;
auto deserialized = data->deserialize(globalObject, &globalObject, ports, SerializationErrorMode::NonThrowing, &didFail);
JSC::Strong<JSC::Unknown> strongData(vm, deserialized);
auto& eventType = didFail ? eventNames().messageerrorEvent : eventNames().messageEvent;
auto event = adoptRef(*new MessageEvent(eventType, WTFMove(data), origin, lastEventId, WTFMove(source), WTFMove(ports)));
JSC::Strong<JSC::JSObject> strongWrapper(vm, JSC::jsCast<JSC::JSObject*>(toJS(&globalObject, JSC::jsCast<JSDOMGlobalObject*>(&globalObject), event.get())));
// Since we've already deserialized the SerializedScriptValue, cache the result so we don't have to deserialize
// again the next time JSMessageEvent::data() gets called by the main world.
event->cachedData().set(vm, strongWrapper.get(), deserialized);
return MessageEventWithStrongData { event, WTFMove(strongWrapper) };
}
void MessageEvent::initMessageEvent(const AtomString& type, bool canBubble, bool cancelable, JSValue data, const String& origin, const String& lastEventId, std::optional<MessageEventSource>&& source, Vector<RefPtr<MessagePort>>&& ports)
{
if (isBeingDispatched())
return;
initEvent(type, canBubble, cancelable);
{
Locker { m_concurrentDataAccessLock };
m_data = JSValueTag {};
}
// FIXME: This code is wrong: we should emit a write-barrier. Otherwise, GC can collect it.
// https://bugs.webkit.org/show_bug.cgi?id=236353
m_jsData.setWeakly(data);
m_cachedData.clear();
m_origin = origin;
m_lastEventId = lastEventId;
m_source = WTFMove(source);
m_ports = WTFMove(ports);
m_cachedPorts.clear();
}
EventInterface MessageEvent::eventInterface() const
{
return MessageEventInterfaceType;
}
size_t MessageEvent::memoryCost() const
{
Locker { m_concurrentDataAccessLock };
return WTF::switchOn(
m_data, [](JSValueTag) -> size_t { return 0; },
[](const Ref<SerializedScriptValue>& data) -> size_t { return data->memoryCost(); },
[](const String& string) -> size_t { return string.sizeInBytes(); },
// [](const Ref<Blob>& blob) -> size_t { return blob->size(); },
[](const Ref<ArrayBuffer>& buffer) -> size_t { return buffer->byteLength(); });
}
} // namespace WebCore
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