text: // 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/push_messaging/PushManager.h"
  
  #include "bindings/core/v8/CallbackPromiseAdapter.h"
  #include "bindings/core/v8/ScriptPromise.h"
  #include "bindings/core/v8/ScriptPromiseResolver.h"
  #include "bindings/core/v8/ScriptState.h"
  #include "core/dom/DOMException.h"
  #include "core/dom/Document.h"
  #include "core/dom/ExceptionCode.h"
  #include "core/dom/ExecutionContext.h"
  #include "modules/push_messaging/PushController.h"
  #include "modules/push_messaging/PushError.h"
  #include "modules/push_messaging/PushPermissionStatusCallbacks.h"
  #include "modules/push_messaging/PushSubscription.h"
  #include "modules/push_messaging/PushSubscriptionCallbacks.h"
  #include "modules/serviceworkers/ServiceWorkerRegistration.h"
  #include "public/platform/Platform.h"
  #include "public/platform/modules/push_messaging/WebPushClient.h"
  #include "public/platform/modules/push_messaging/WebPushProvider.h"
  #include "wtf/RefPtr.h"
  
  namespace blink {
  namespace {
  
  WebPushProvider* pushProvider()
  {
      WebPushProvider* webPushProvider = Platform::current()->pushProvider();
      ASSERT(webPushProvider);
      return webPushProvider;
  }
  
  } // namespace
  
  PushManager::PushManager(ServiceWorkerRegistration* registration)
      : m_registration(registration)
  {
      ASSERT(registration);
  }
  
  ScriptPromise PushManager::subscribe(ScriptState* scriptState)
  {
      if (!m_registration->active())
          return ScriptPromise::rejectWithDOMException(scriptState, DOMException::create(AbortError, "Subscription failed - no active Service Worker"));
  
      RefPtrWillBeRawPtr<ScriptPromiseResolver> resolver = ScriptPromiseResolver::create(scriptState);
      ScriptPromise promise = resolver->promise();
  
      // The document context is the only reasonable context from which to ask the user for permission
      // to use the Push API. The embedder should persist the permission so that later calls in
      // different contexts can succeed.
      if (scriptState->executionContext()->isDocument()) {
          Document* document = toDocument(scriptState->executionContext());
          // FIXME: add test coverage for this condition - https://crbug.com/440431
          if (!document->domWindow() || !document->frame())
              return ScriptPromise::rejectWithDOMException(scriptState, DOMException::create(InvalidStateError, "Document is detached from window."));
          PushController::clientFrom(document->frame()).registerPushMessaging(m_registration->webRegistration(), new PushSubscriptionCallbacks(resolver, m_registration));
      } else {
          pushProvider()->registerPushMessaging(m_registration->webRegistration(), new PushSubscriptionCallbacks(resolver, m_registration));
      }
  
      return promise;
  }
  
  ScriptPromise PushManager::getSubscription(ScriptState* scriptState)
  {
      RefPtrWillBeRawPtr<ScriptPromiseResolver> resolver = ScriptPromiseResolver::create(scriptState);
      ScriptPromise promise = resolver->promise();
  
      pushProvider()->getRegistration(m_registration->webRegistration(), new PushSubscriptionCallbacks(resolver, m_registration));
      return promise;
  }
  
  ScriptPromise PushManager::permissionState(ScriptState* scriptState)
  {
      if (scriptState->executionContext()->isDocument()) {
          Document* document = toDocument(scriptState->executionContext());
          // FIXME: add test coverage for this condition - https://crbug.com/440431
          if (!document->domWindow() || !document->frame())
              return ScriptPromise::rejectWithDOMException(scriptState, DOMException::create(InvalidStateError, "Document is detached from window."));
      }
  
      RefPtrWillBeRawPtr<ScriptPromiseResolver> resolver = ScriptPromiseResolver::create(scriptState);
      ScriptPromise promise = resolver->promise();
      pushProvider()->getPermissionStatus(m_registration->webRegistration(), new PushPermissionStatusCallbacks(resolver));
      return promise;
  }
  
  DEFINE_TRACE(PushManager)
  {
      visitor->trace(m_registration);
  }
  
  } // namespace blink
  