src/third_party/WebKit/Source/modules/serviceworkers/NavigatorServiceWorker.cpp

   1 // Copyright 2014 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 #include "config.h"
   6 #include "modules/serviceworkers/NavigatorServiceWorker.h"
   7
   8 #include "core/dom/Document.h"
   9 #include "core/frame/DOMWindow.h"
  10 #include "core/frame/LocalFrame.h"
  11 #include "core/frame/Navigator.h"
  12 #include "modules/serviceworkers/ServiceWorkerContainer.h"
  13
  14 namespace WebCore {
  15
  16 NavigatorServiceWorker::NavigatorServiceWorker(Navigator& navigator)
  17     : DOMWindowProperty(navigator.frame())
  18 {
  19 }
  20
  21 NavigatorServiceWorker::~NavigatorServiceWorker()
  22 {
  23 }
  24
  25 NavigatorServiceWorker* NavigatorServiceWorker::from(Document& document)
  26 {
  27     if (!document.frame() || !document.frame()->domWindow())
  28         return 0;
  29     Navigator& navigator = document.frame()->domWindow()->navigator();
  30     return &from(navigator);
  31 }
  32
  33 NavigatorServiceWorker& NavigatorServiceWorker::from(Navigator& navigator)
  34 {
  35     NavigatorServiceWorker* supplement = toNavigatorServiceWorker(navigator);
  36     if (!supplement) {
  37         supplement = new NavigatorServiceWorker(navigator);
  38         provideTo(navigator, supplementName(), adoptPtrWillBeNoop(supplement));
  39         // Initialize ServiceWorkerContainer too.
  40         supplement->serviceWorker();
  41     }
  42     return *supplement;
  43 }
  44
  45 NavigatorServiceWorker* NavigatorServiceWorker::toNavigatorServiceWorker(Navigator& navigator)
  46 {
  47     return static_cast<NavigatorServiceWorker*>(WillBeHeapSupplement<Navigator>::from(navigator, supplementName()));
  48 }
  49
  50 const char* NavigatorServiceWorker::supplementName()
  51 {
  52     return "NavigatorServiceWorker";
  53 }
  54
  55 ServiceWorkerContainer* NavigatorServiceWorker::serviceWorker(Navigator& navigator)
  56 {
  57     return NavigatorServiceWorker::from(navigator).serviceWorker();
  58 }
  59
  60 ServiceWorkerContainer* NavigatorServiceWorker::serviceWorker()
  61 {
  62     if (!m_serviceWorker && frame()) {
  63         ASSERT(frame()->domWindow());
  64         m_serviceWorker = ServiceWorkerContainer::create(frame()->domWindow()->executionContext());
  65     }
  66     return m_serviceWorker.get();
  67 }
  68
  69 void NavigatorServiceWorker::willDetachGlobalObjectFromFrame()
  70 {
  71     if (m_serviceWorker) {
  72         m_serviceWorker->detachClient();
  73         m_serviceWorker = nullptr;
  74     }
  75 }
  76
  77 } // namespace WebCore