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/*
* Copyright (C) 2017 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. AND ITS CONTRIBUTORS ``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 ITS 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 "config.h"
#include "ExtendableEvent.h"
#if ENABLE(SERVICE_WORKER)
#include "JSDOMGlobalObject.h"
#include "JSDOMPromise.h"
#include "ScriptExecutionContext.h"
#include <JavaScriptCore/Microtask.h>
#include <wtf/IsoMallocInlines.h>
namespace WebCore {
WTF_MAKE_ISO_ALLOCATED_IMPL(ExtendableEvent);
ExtendableEvent::ExtendableEvent(const AtomString& type, const ExtendableEventInit& initializer, IsTrusted isTrusted)
: Event(type, initializer, isTrusted)
{
}
ExtendableEvent::ExtendableEvent(const AtomString& type, CanBubble canBubble, IsCancelable cancelable)
: Event(type, canBubble, cancelable)
{
}
ExtendableEvent::~ExtendableEvent()
{
}
// https://w3c.github.io/ServiceWorker/#dom-extendableevent-waituntil
ExceptionOr<void> ExtendableEvent::waitUntil(Ref<DOMPromise>&& promise)
{
if (!isTrusted())
return Exception { InvalidStateError, "Event is not trusted"_s };
// If the pending promises count is zero and the dispatch flag is unset, throw an "InvalidStateError" DOMException.
if (!m_pendingPromiseCount && !isBeingDispatched())
return Exception { InvalidStateError, "Event is no longer being dispatched and has no pending promises"_s };
addExtendLifetimePromise(WTFMove(promise));
return { };
}
class FunctionMicrotask final : public JSC::Microtask {
public:
static Ref<FunctionMicrotask> create(Function<void()>&& function)
{
return adoptRef(*new FunctionMicrotask(WTFMove(function)));
}
private:
explicit FunctionMicrotask(Function<void()>&& function)
: m_function(WTFMove(function))
{
}
void run(JSC::JSGlobalObject*) final
{
m_function();
}
Function<void()> m_function;
};
void ExtendableEvent::addExtendLifetimePromise(Ref<DOMPromise>&& promise)
{
promise->whenSettled([this, protectedThis = Ref { *this }, settledPromise = promise.ptr()] () mutable {
auto& globalObject = *settledPromise->globalObject();
globalObject.queueMicrotask(FunctionMicrotask::create([this, protectedThis = WTFMove(protectedThis), settledPromise = WTFMove(settledPromise)] () mutable {
--m_pendingPromiseCount;
// FIXME: Let registration be the context object's relevant global object's associated service worker's containing service worker registration.
// FIXME: If registration's uninstalling flag is set, invoke Try Clear Registration with registration.
// FIXME: If registration is not null, invoke Try Activate with registration.
auto* context = settledPromise->globalObject()->scriptExecutionContext();
if (!context)
return;
context->postTask([this, protectedThis = WTFMove(protectedThis)] (ScriptExecutionContext&) mutable {
if (m_pendingPromiseCount)
return;
auto settledPromises = WTFMove(m_extendLifetimePromises);
if (auto handler = WTFMove(m_whenAllExtendLifetimePromisesAreSettledHandler))
handler(WTFMove(settledPromises));
});
}));
});
m_extendLifetimePromises.add(WTFMove(promise));
++m_pendingPromiseCount;
}
void ExtendableEvent::whenAllExtendLifetimePromisesAreSettled(Function<void(HashSet<Ref<DOMPromise>>&&)>&& handler)
{
ASSERT_WITH_MESSAGE(target(), "Event has not been dispatched yet");
ASSERT(!m_whenAllExtendLifetimePromisesAreSettledHandler);
if (!m_pendingPromiseCount) {
handler(WTFMove(m_extendLifetimePromises));
return;
}
m_whenAllExtendLifetimePromisesAreSettledHandler = WTFMove(handler);
}
} // namespace WebCore
#endif // ENABLE(SERVICE_WORKER)
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