| /* |
| * Copyright (C) 2013 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: |
| * |
| * * Redistributions of source code must retain the above copyright |
| * notice, this list of conditions and the following disclaimer. |
| * * 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. |
| * * Neither the name of Google Inc. nor the names of its |
| * contributors may be used to endorse or promote products derived from |
| * this software without specific prior written permission. |
| * |
| * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND 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 THE COPYRIGHT |
| * OWNER 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 "config.h" |
| #include "ServiceWorker.h" |
| |
| #include "bindings/core/v8/ExceptionState.h" |
| #include "bindings/core/v8/ScriptPromiseResolver.h" |
| #include "bindings/core/v8/ScriptState.h" |
| #include "core/dom/MessagePort.h" |
| #include "core/events/Event.h" |
| #include "modules/EventTargetModules.h" |
| #include "public/platform/WebMessagePortChannel.h" |
| #include "public/platform/WebServiceWorkerState.h" |
| #include "public/platform/WebString.h" |
| #include <v8.h> |
| |
| namespace blink { |
| |
| class ServiceWorker::ThenFunction final : public ScriptFunction { |
| public: |
| static v8::Handle<v8::Function> createFunction(ScriptState* scriptState, PassRefPtrWillBeRawPtr<ServiceWorker> observer) |
| { |
| ThenFunction* self = new ThenFunction(scriptState, observer); |
| return self->bindToV8Function(); |
| } |
| |
| virtual void trace(Visitor* visitor) override |
| { |
| visitor->trace(m_observer); |
| ScriptFunction::trace(visitor); |
| } |
| |
| private: |
| ThenFunction(ScriptState* scriptState, PassRefPtrWillBeRawPtr<ServiceWorker> observer) |
| : ScriptFunction(scriptState) |
| , m_observer(observer) |
| { |
| } |
| |
| virtual ScriptValue call(ScriptValue value) override |
| { |
| m_observer->onPromiseResolved(); |
| return value; |
| } |
| |
| RefPtrWillBeMember<ServiceWorker> m_observer; |
| }; |
| |
| const AtomicString& ServiceWorker::interfaceName() const |
| { |
| return EventTargetNames::ServiceWorker; |
| } |
| |
| void ServiceWorker::postMessage(ExecutionContext*, PassRefPtr<SerializedScriptValue> message, const MessagePortArray* ports, ExceptionState& exceptionState) |
| { |
| // Disentangle the port in preparation for sending it to the remote context. |
| OwnPtr<MessagePortChannelArray> channels = MessagePort::disentanglePorts(ports, exceptionState); |
| if (exceptionState.hadException()) |
| return; |
| if (m_outerWorker->state() == WebServiceWorkerStateRedundant) { |
| exceptionState.throwDOMException(InvalidStateError, "ServiceWorker is in redundant state."); |
| return; |
| } |
| |
| WebString messageString = message->toWireString(); |
| OwnPtr<WebMessagePortChannelArray> webChannels = MessagePort::toWebMessagePortChannelArray(channels.release()); |
| m_outerWorker->postMessage(messageString, webChannels.leakPtr()); |
| } |
| |
| void ServiceWorker::terminate(ExceptionState& exceptionState) |
| { |
| exceptionState.throwDOMException(InvalidAccessError, "Not supported."); |
| } |
| |
| bool ServiceWorker::isReady() |
| { |
| return m_proxyState == Ready; |
| } |
| |
| void ServiceWorker::dispatchStateChangeEvent() |
| { |
| ASSERT(isReady()); |
| this->dispatchEvent(Event::create(EventTypeNames::statechange)); |
| } |
| |
| String ServiceWorker::scriptURL() const |
| { |
| return m_outerWorker->url().string(); |
| } |
| |
| const AtomicString& ServiceWorker::state() const |
| { |
| DEFINE_STATIC_LOCAL(AtomicString, unknown, ("unknown", AtomicString::ConstructFromLiteral)); |
| DEFINE_STATIC_LOCAL(AtomicString, installing, ("installing", AtomicString::ConstructFromLiteral)); |
| DEFINE_STATIC_LOCAL(AtomicString, installed, ("installed", AtomicString::ConstructFromLiteral)); |
| DEFINE_STATIC_LOCAL(AtomicString, activating, ("activating", AtomicString::ConstructFromLiteral)); |
| DEFINE_STATIC_LOCAL(AtomicString, activated, ("activated", AtomicString::ConstructFromLiteral)); |
| DEFINE_STATIC_LOCAL(AtomicString, redundant, ("redundant", AtomicString::ConstructFromLiteral)); |
| |
| switch (m_outerWorker->state()) { |
| case WebServiceWorkerStateUnknown: |
| // The web platform should never see this internal state |
| ASSERT_NOT_REACHED(); |
| return unknown; |
| case WebServiceWorkerStateInstalling: |
| return installing; |
| case WebServiceWorkerStateInstalled: |
| return installed; |
| case WebServiceWorkerStateActivating: |
| return activating; |
| case WebServiceWorkerStateActivated: |
| return activated; |
| case WebServiceWorkerStateRedundant: |
| return redundant; |
| default: |
| ASSERT_NOT_REACHED(); |
| return nullAtom; |
| } |
| } |
| |
| PassRefPtrWillBeRawPtr<ServiceWorker> ServiceWorker::from(ExecutionContext* executionContext, WebType* worker) |
| { |
| if (!worker) |
| return nullptr; |
| |
| RefPtrWillBeRawPtr<ServiceWorker> serviceWorker = getOrCreate(executionContext, worker); |
| if (serviceWorker->m_proxyState == Initial) |
| serviceWorker->setProxyState(Ready); |
| return serviceWorker.release(); |
| } |
| |
| PassRefPtrWillBeRawPtr<ServiceWorker> ServiceWorker::take(ScriptPromiseResolver* resolver, WebType* worker) |
| { |
| if (!worker) |
| return nullptr; |
| |
| RefPtrWillBeRawPtr<ServiceWorker> serviceWorker = getOrCreate(resolver->scriptState()->executionContext(), worker); |
| ScriptState::Scope scope(resolver->scriptState()); |
| if (serviceWorker->m_proxyState == Initial) |
| serviceWorker->waitOnPromise(resolver); |
| return serviceWorker; |
| } |
| |
| void ServiceWorker::dispose(WebType* worker) |
| { |
| if (worker && !worker->proxy()) |
| delete worker; |
| } |
| |
| void ServiceWorker::setProxyState(ProxyState state) |
| { |
| if (m_proxyState == state) |
| return; |
| switch (m_proxyState) { |
| case Initial: |
| ASSERT(state == RegisterPromisePending || state == Ready || state == ContextStopped); |
| break; |
| case RegisterPromisePending: |
| ASSERT(state == Ready || state == ContextStopped); |
| break; |
| case Ready: |
| ASSERT(state == ContextStopped); |
| break; |
| case ContextStopped: |
| ASSERT_NOT_REACHED(); |
| break; |
| } |
| |
| ProxyState oldState = m_proxyState; |
| m_proxyState = state; |
| if (oldState == Ready || state == Ready) |
| m_outerWorker->proxyReadyChanged(); |
| } |
| |
| void ServiceWorker::onPromiseResolved() |
| { |
| if (m_proxyState == ContextStopped) |
| return; |
| setProxyState(Ready); |
| } |
| |
| void ServiceWorker::waitOnPromise(ScriptPromiseResolver* resolver) |
| { |
| if (resolver->promise().isEmpty()) { |
| // The document was detached during registration. The state doesn't really |
| // matter since this ServiceWorker will immediately die. |
| setProxyState(ContextStopped); |
| return; |
| } |
| setProxyState(RegisterPromisePending); |
| resolver->promise().then(ThenFunction::createFunction(resolver->scriptState(), this)); |
| } |
| |
| bool ServiceWorker::hasPendingActivity() const |
| { |
| if (AbstractWorker::hasPendingActivity()) |
| return true; |
| if (m_proxyState == ContextStopped) |
| return false; |
| return m_outerWorker->state() != WebServiceWorkerStateRedundant; |
| } |
| |
| void ServiceWorker::stop() |
| { |
| setProxyState(ContextStopped); |
| } |
| |
| PassRefPtrWillBeRawPtr<ServiceWorker> ServiceWorker::getOrCreate(ExecutionContext* executionContext, WebType* outerWorker) |
| { |
| if (!outerWorker) |
| return nullptr; |
| |
| ServiceWorker* existingServiceWorker = static_cast<ServiceWorker*>(outerWorker->proxy()); |
| if (existingServiceWorker) { |
| ASSERT(existingServiceWorker->executionContext() == executionContext); |
| return existingServiceWorker; |
| } |
| |
| RefPtrWillBeRawPtr<ServiceWorker> worker = adoptRefWillBeNoop(new ServiceWorker(executionContext, adoptPtr(outerWorker))); |
| worker->suspendIfNeeded(); |
| return worker.release(); |
| } |
| |
| ServiceWorker::ServiceWorker(ExecutionContext* executionContext, PassOwnPtr<WebServiceWorker> worker) |
| : AbstractWorker(executionContext) |
| , m_outerWorker(worker) |
| , m_proxyState(Initial) |
| { |
| ASSERT(m_outerWorker); |
| m_outerWorker->setProxy(this); |
| } |
| |
| } // namespace blink |