Introduce a //content/ API for dispatching notificationclick events.

content/browser/notifications/notification_event_dispatcher_impl.cc

+// 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 "content/browser/notifications/notification_event_dispatcher_impl.h"
+
+#include "base/callback.h"
+#include "content/browser/service_worker/service_worker_context_wrapper.h"
+#include "content/browser/service_worker/service_worker_registration.h"
+#include "content/browser/service_worker/service_worker_storage.h"
+#include "content/public/browser/browser_context.h"
+#include "content/public/browser/browser_thread.h"
+#include "content/public/browser/storage_partition.h"
+#include "content/public/common/show_desktop_notification_params.h"
+
+namespace content {
+namespace {
+
+using NotificationClickDispatchCompleteCallback =
+    NotificationEventDispatcher::NotificationClickDispatchCompleteCallback;
+
+// To be called when the notificationclick event has finished executing. Will
+// post a task to call |done_callback| on the UI thread.

[Michael van Ouwerkerk, 2014/12/08 15:13:42]

s/|done_callback|/|callback|/

[Peter Beverloo, 2014/12/08 17:27:08]

Done.

+void NotificationClickEventFinished(
+    const NotificationClickDispatchCompleteCallback& callback,
+    const scoped_refptr<ServiceWorkerRegistration>& service_worker_registration,
+    ServiceWorkerStatusCode service_worker_status) {
+  DCHECK_CURRENTLY_ON(BrowserThread::IO);
+
+  PersistentNotificationStatus status = PERSISTENT_NOTIFICATION_STATUS_SUCCESS;
+  switch (service_worker_status) {
+    case SERVICE_WORKER_OK:
+      // Success status was initialized above.
+      break;
+    case SERVICE_WORKER_ERROR_EVENT_WAITUNTIL_REJECTED:
+      status = PERSISTENT_NOTIFICATION_STATUS_EVENT_WAITUNTIL_REJECTED;
+      break;
+    case SERVICE_WORKER_ERROR_FAILED:
+    case SERVICE_WORKER_ERROR_ABORT:
+    case SERVICE_WORKER_ERROR_START_WORKER_FAILED:
+    case SERVICE_WORKER_ERROR_PROCESS_NOT_FOUND:
+    case SERVICE_WORKER_ERROR_NOT_FOUND:
+    case SERVICE_WORKER_ERROR_EXISTS:
+    case SERVICE_WORKER_ERROR_INSTALL_WORKER_FAILED:
+    case SERVICE_WORKER_ERROR_ACTIVATE_WORKER_FAILED:
+    case SERVICE_WORKER_ERROR_IPC_FAILED:
+    case SERVICE_WORKER_ERROR_NETWORK:
+    case SERVICE_WORKER_ERROR_SECURITY:
+      status = PERSISTENT_NOTIFICATION_STATUS_SERVICE_WORKER_ERROR;
+      break;
+  }
+
+  BrowserThread::PostTask(BrowserThread::UI,
+                          FROM_HERE,
+                          base::Bind(callback, status));
+}
+
+// Dispatches the notificationclick on |service_worker_registration| if the
+// registration was available. Must be called on the IO thread.
+void DispatchNotificationClickEvent(
+    const std::string& notification_id,
+    const ShowDesktopNotificationHostMsgParams& notification_data,
+    const NotificationClickDispatchCompleteCallback& callback,
+    ServiceWorkerStatusCode service_worker_status,
+    const scoped_refptr<ServiceWorkerRegistration>&
+        service_worker_registration) {
+  DCHECK_CURRENTLY_ON(BrowserThread::IO);
+  if (service_worker_status == SERVICE_WORKER_OK) {
+    base::Callback<void(ServiceWorkerStatusCode)> dispatch_event_callback =
+        base::Bind(&NotificationClickEventFinished,
+                   callback,
+                   service_worker_registration);
+    service_worker_registration->active_version()
+        ->DispatchNotificationClickEvent(dispatch_event_callback,
+                                         notification_id,
+                                         notification_data);
+    return;
+  }
+
+  PersistentNotificationStatus status = PERSISTENT_NOTIFICATION_STATUS_SUCCESS;
+  switch (service_worker_status) {
+    case SERVICE_WORKER_ERROR_NOT_FOUND:
+      status = PERSISTENT_NOTIFICATION_STATUS_NO_SERVICE_WORKER;
+      break;
+    case SERVICE_WORKER_ERROR_FAILED:
+    case SERVICE_WORKER_ERROR_ABORT:
+    case SERVICE_WORKER_ERROR_START_WORKER_FAILED:
+    case SERVICE_WORKER_ERROR_PROCESS_NOT_FOUND:
+    case SERVICE_WORKER_ERROR_EXISTS:
+    case SERVICE_WORKER_ERROR_INSTALL_WORKER_FAILED:
+    case SERVICE_WORKER_ERROR_ACTIVATE_WORKER_FAILED:
+    case SERVICE_WORKER_ERROR_IPC_FAILED:
+    case SERVICE_WORKER_ERROR_NETWORK:
+    case SERVICE_WORKER_ERROR_SECURITY:
+    case SERVICE_WORKER_ERROR_EVENT_WAITUNTIL_REJECTED:
+      status = PERSISTENT_NOTIFICATION_STATUS_SERVICE_WORKER_ERROR;
+      break;
+    case SERVICE_WORKER_OK:
+      NOTREACHED();
+      break;
+  }
+
+  BrowserThread::PostTask(BrowserThread::UI,
+                          FROM_HERE,
+                          base::Bind(callback, status));

[Michael van Ouwerkerk, 2014/12/08 15:13:42]

Nit: there are multiple callbacks in this function, which one is this? Maybe
rename to dispatch_complete_callback.

[Peter Beverloo, 2014/12/08 17:27:07]

Done.

+}
+
+// Finds the ServiceWorkerRegistration associated with the |origin| and
+// |service_worker_registration_id|. Must be called on the IO thread.
+void FindServiceWorkerRegistration(
+    const GURL& origin,
+    int64 service_worker_registration_id,
+    const std::string& notification_id,
+    const ShowDesktopNotificationHostMsgParams& notification_data,
+    const NotificationClickDispatchCompleteCallback& callback,
+    scoped_refptr<ServiceWorkerContextWrapper> service_worker_context) {
+  DCHECK_CURRENTLY_ON(BrowserThread::IO);
+  service_worker_context->context()->storage()->FindRegistrationForId(
+      service_worker_registration_id,
+      origin,
+      base::Bind(&DispatchNotificationClickEvent,
+                 notification_id,
+                 notification_data,
+                 callback));
+}
+
+}  // namespace
+
+// static
+NotificationEventDispatcher* NotificationEventDispatcher::GetInstance() {
+  return NotificationEventDispatcherImpl::GetInstance();
+}
+
+NotificationEventDispatcherImpl*
+NotificationEventDispatcherImpl::GetInstance() {
+  DCHECK_CURRENTLY_ON(BrowserThread::UI);
+  return Singleton<NotificationEventDispatcherImpl>::get();
+}
+
+NotificationEventDispatcherImpl::NotificationEventDispatcherImpl() {}
+
+NotificationEventDispatcherImpl::~NotificationEventDispatcherImpl() {}
+
+void NotificationEventDispatcherImpl::DispatchNotificationClickEvent(

[Michael van Ouwerkerk, 2014/12/08 15:13:42]

Nit: this has the same name as a function in an anonymous namespace. Care to
distinguish them more clearly?

[Peter Beverloo, 2014/12/08 17:27:07]

Done.

+    BrowserContext* browser_context,
+    const GURL& origin,
+    int64 service_worker_registration_id,
+    const std::string& notification_id,
+    const ShowDesktopNotificationHostMsgParams& notification_data,
+    const NotificationClickDispatchCompleteCallback& callback) {
+  DCHECK_CURRENTLY_ON(BrowserThread::UI);
+
+  StoragePartition* partition =
+      BrowserContext::GetStoragePartitionForSite(browser_context, origin);
+  scoped_refptr<ServiceWorkerContextWrapper> service_worker_context =
+      static_cast<ServiceWorkerContextWrapper*>(
+          partition->GetServiceWorkerContext());
+  BrowserThread::PostTask(
+      BrowserThread::IO,
+      FROM_HERE,
+      base::Bind(&FindServiceWorkerRegistration,
+                 origin,
+                 service_worker_registration_id,
+                 notification_id,
+                 notification_data,
+                 callback,
+                 service_worker_context));
+}
+
+}  // namespace content