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// Copyright 2014 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "config.h"
#include "modules/serviceworkers/WaitUntilObserver.h"
#include "bindings/core/v8/ScriptFunction.h"
#include "bindings/core/v8/ScriptPromise.h"
#include "bindings/core/v8/ScriptValue.h"
#include "bindings/core/v8/V8Binding.h"
#include "core/dom/ExceptionCode.h"
#include "core/dom/ExecutionContext.h"
#include "modules/serviceworkers/ServiceWorkerGlobalScope.h"
#include "platform/NotImplemented.h"
#include "public/platform/WebServiceWorkerEventResult.h"
#include "wtf/Assertions.h"
#include "wtf/RefCounted.h"
#include "wtf/RefPtr.h"
#include <v8.h>
namespace blink {
class WaitUntilObserver::ThenFunction final : public ScriptFunction {
public:
enum ResolveType {
Fulfilled,
Rejected,
};
static v8::Handle<v8::Function> createFunction(ScriptState* scriptState, WaitUntilObserver* observer, ResolveType type)
{
ThenFunction* self = new ThenFunction(scriptState, observer, type);
return self->bindToV8Function();
}
virtual void trace(Visitor* visitor) override
{
visitor->trace(m_observer);
ScriptFunction::trace(visitor);
}
private:
ThenFunction(ScriptState* scriptState, WaitUntilObserver* observer, ResolveType type)
: ScriptFunction(scriptState)
, m_observer(observer)
, m_resolveType(type)
{
}
virtual ScriptValue call(ScriptValue value) override
{
ASSERT(m_observer);
ASSERT(m_resolveType == Fulfilled || m_resolveType == Rejected);
if (m_resolveType == Rejected)
m_observer->reportError(value);
m_observer->decrementPendingActivity();
m_observer = nullptr;
return value;
}
Member<WaitUntilObserver> m_observer;
ResolveType m_resolveType;
};
WaitUntilObserver* WaitUntilObserver::create(ExecutionContext* context, EventType type, int eventID)
{
return new WaitUntilObserver(context, type, eventID);
}
void WaitUntilObserver::willDispatchEvent()
{
incrementPendingActivity();
}
void WaitUntilObserver::didDispatchEvent(bool errorOccurred)
{
if (errorOccurred)
m_hasError = true;
decrementPendingActivity();
m_eventDispatched = true;
}
void WaitUntilObserver::waitUntil(ScriptState* scriptState, const ScriptValue& value, ExceptionState& exceptionState)
{
if (m_eventDispatched) {
exceptionState.throwDOMException(InvalidStateError, "The event handler is already finished.");
return;
}
if (!executionContext())
return;
// When handling a notificationclick event, we want to allow one window to
// be focused. Regardless of whether one window was focused,
// |consumeWindowFocus| will be called when all the pending activities will
// be resolved.
if (m_type == NotificationClick)
executionContext()->allowWindowFocus();
incrementPendingActivity();
ScriptPromise::cast(scriptState, value).then(
ThenFunction::createFunction(scriptState, this, ThenFunction::Fulfilled),
ThenFunction::createFunction(scriptState, this, ThenFunction::Rejected));
}
WaitUntilObserver::WaitUntilObserver(ExecutionContext* context, EventType type, int eventID)
: ContextLifecycleObserver(context)
, m_type(type)
, m_eventID(eventID)
, m_pendingActivity(0)
, m_hasError(false)
, m_eventDispatched(false)
{
}
void WaitUntilObserver::reportError(const ScriptValue& value)
{
// FIXME: Propagate error message to the client for onerror handling.
notImplemented();
m_hasError = true;
}
void WaitUntilObserver::incrementPendingActivity()
{
++m_pendingActivity;
}
void WaitUntilObserver::decrementPendingActivity()
{
ASSERT(m_pendingActivity > 0);
if (!executionContext() || (!m_hasError && --m_pendingActivity))
return;
ServiceWorkerGlobalScopeClient* client = ServiceWorkerGlobalScopeClient::from(executionContext());
WebServiceWorkerEventResult result = m_hasError ? WebServiceWorkerEventResultRejected : WebServiceWorkerEventResultCompleted;
switch (m_type) {
case Activate:
client->didHandleActivateEvent(m_eventID, result);
break;
case Install:
client->didHandleInstallEvent(m_eventID, result);
break;
case NotificationClick:
client->didHandleNotificationClickEvent(m_eventID, result);
executionContext()->consumeWindowFocus();
break;
case Push:
client->didHandlePushEvent(m_eventID, result);
break;
}
observeContext(0);
}
void WaitUntilObserver::trace(Visitor* visitor)
{
ContextLifecycleObserver::trace(visitor);
}
} // namespace blink
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