Implement support for link type serviceworker in link elements.

third_party/WebKit/Source/modules/serviceworkers/ServiceWorkerLinkResource.cpp

+// Copyright 2016 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 "modules/serviceworkers/ServiceWorkerLinkResource.h"
+
+#include "core/dom/Document.h"
+#include "core/frame/LocalFrame.h"
+#include "core/html/HTMLLinkElement.h"
+#include "core/loader/FrameLoaderClient.h"
+#include "modules/serviceworkers/NavigatorServiceWorker.h"
+#include "modules/serviceworkers/ServiceWorkerContainer.h"
+#include "public/platform/Platform.h"
+#include "public/platform/WebScheduler.h"
+
+namespace blink {
+
+namespace {
+
+class RegistrationCallback : public WebServiceWorkerProvider::WebServiceWorkerRegistrationCallbacks {
+public:
+    explicit RegistrationCallback(LinkLoaderClient* client) : m_client(client) {}
+    ~RegistrationCallback() override {}
+
+    void onSuccess(WebPassOwnPtr<WebServiceWorkerRegistration::Handle> handle) override
+    {
+        Platform::current()->currentThread()->scheduler()->timerTaskRunner()->postTask(BLINK_FROM_HERE, bind(&LinkLoaderClient::linkLoaded, m_client));
+    }
+
+    void onError(const WebServiceWorkerError& error) override
+    {
+        Platform::current()->currentThread()->scheduler()->timerTaskRunner()->postTask(BLINK_FROM_HERE, bind(&LinkLoaderClient::linkLoadingErrored, m_client));
+    }
+
+private:
+    WTF_MAKE_NONCOPYABLE(RegistrationCallback);
+
+    RawPtrWillBePersistent<LinkLoaderClient> m_client;
+};
+
+}
+
+PassOwnPtrWillBeRawPtr<ServiceWorkerLinkResource> ServiceWorkerLinkResource::create(HTMLLinkElement* owner)
+{
+    return adoptPtrWillBeNoop(new ServiceWorkerLinkResource(owner));
+}
+
+ServiceWorkerLinkResource::~ServiceWorkerLinkResource()
+{
+}
+
+void ServiceWorkerLinkResource::process()
+{
+    if (!m_owner || !m_owner->document().frame())
+        return;
+
+    if (!m_owner->shouldLoadLink())
+        return;
+
+    Document& document = m_owner->document();
+
+    KURL scriptURL = m_owner->href();
+
+    String scope = m_owner->scope();
+    KURL scopeURL;
+    if (scope.isNull())
+        scopeURL = KURL(scriptURL, "./");
+    else
+        scopeURL = document.completeURL(scope);
+    scopeURL.removeFragmentIdentifier();
+
+    TrackExceptionState exceptionState;
+
+    NavigatorServiceWorker::serviceWorker(&document, *document.frame()->domWindow()->navigator(), exceptionState)->registerServiceWorkerImpl(&document, scriptURL, scopeURL, adoptPtr(new RegistrationCallback(m_owner)));
+}
+
+bool ServiceWorkerLinkResource::hasLoaded() const
+{
+    return false;
+}
+
+void ServiceWorkerLinkResource::ownerRemoved()
+{
+    process();
+}
+
+ServiceWorkerLinkResource::ServiceWorkerLinkResource(HTMLLinkElement* owner)
+    : LinkResource(owner)
+{
+}
+
+} // namespace blink