src/content/child/service_worker/web_service_worker_impl.h

   1 // Copyright 2013 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #ifndef CONTENT_CHILD_SERVICE_WORKER_WEB_SERVICE_WORKER_IMPL_H_
   6 #define CONTENT_CHILD_SERVICE_WORKER_WEB_SERVICE_WORKER_IMPL_H_
   7
   8 #include <vector>
   9
  10 #include "base/compiler_specific.h"
  11 #include "base/memory/ref_counted.h"
  12 #include "base/strings/string16.h"
  13 #include "third_party/WebKit/public/platform/WebMessagePortChannel.h"
  14 #include "third_party/WebKit/public/platform/WebServiceWorker.h"
  15 #include "third_party/WebKit/public/web/WebFrame.h"
  16
  17 namespace blink {
  18 class WebServiceWorkerProxy;
  19 }
  20
  21 namespace content {
  22
  23 class ServiceWorkerHandleReference;
  24 struct ServiceWorkerObjectInfo;
  25 class ThreadSafeSender;
  26
  27 // Each instance corresponds to one ServiceWorker object in JS context, and
  28 // is held by ServiceWorker object in blink's c++ layer, e.g. created one
  29 // per navigator.serviceWorker.current or per successful
  30 // navigator.serviceWorker.register call.
  31 //
  32 // Each instance holds one ServiceWorkerHandleReference so that
  33 // corresponding ServiceWorkerHandle doesn't go away in the browser process
  34 // while the ServiceWorker object is alive.
  35 class WebServiceWorkerImpl
  36     : NON_EXPORTED_BASE(public blink::WebServiceWorker) {
  37  public:
  38   WebServiceWorkerImpl(scoped_ptr<ServiceWorkerHandleReference> handle_ref,
  39                        ThreadSafeSender* thread_safe_sender);
  40   virtual ~WebServiceWorkerImpl();
  41
  42   // Notifies that the service worker's state changed. This function may queue
  43   // the state change for later processing, if the proxy is not yet ready to
  44   // handle state changes.
  45   void OnStateChanged(blink::WebServiceWorkerState new_state);
  46
  47   virtual void setProxy(blink::WebServiceWorkerProxy* proxy);
  48   virtual blink::WebServiceWorkerProxy* proxy();
  49   virtual void proxyReadyChanged();
  50   virtual blink::WebURL scope() const;
  51   virtual blink::WebURL url() const;
  52   virtual blink::WebServiceWorkerState state() const;
  53   virtual void postMessage(const blink::WebString& message,
  54                            blink::WebMessagePortChannelArray* channels);
  55
  56  private:
  57   // Commits the new state internally and notifies the proxy of the change.
  58   void CommitState(blink::WebServiceWorkerState new_state);
  59
  60   scoped_ptr<ServiceWorkerHandleReference> handle_ref_;
  61   blink::WebServiceWorkerState state_;
  62   scoped_refptr<ThreadSafeSender> thread_safe_sender_;
  63   blink::WebServiceWorkerProxy* proxy_;
  64   std::vector<blink::WebServiceWorkerState> queued_states_;
  65
  66   DISALLOW_COPY_AND_ASSIGN(WebServiceWorkerImpl);
  67 };
  68
  69 }  // namespace content
  70
  71 #endif  // CONTENT_CHILD_SERVICE_WORKER_WEB_SERVICE_WORKER_IMPL_H_