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/LocalDOMWindow.h"
  10 #include "core/frame/LocalFrame.h"
  11 #include "core/frame/Navigator.h"
  12 #include "modules/serviceworkers/ServiceWorkerContainer.h"
  13
  14 namespace blink {
  15
  16 NavigatorServiceWorker::NavigatorServiceWorker(Navigator& navigator)
  17     : DOMWindowProperty(navigator.frame())
  18 {
  19 }
  20
  21 DEFINE_EMPTY_DESTRUCTOR_WILL_BE_REMOVED(NavigatorServiceWorker);
  22
  23 NavigatorServiceWorker* NavigatorServiceWorker::from(Document& document)
  24 {
  25     if (!document.frame() || !document.frame()->domWindow())
  26         return 0;
  27     Navigator& navigator = *document.frame()->domWindow()->navigator();
  28     return &from(navigator);
  29 }
  30
  31 NavigatorServiceWorker& NavigatorServiceWorker::from(Navigator& navigator)
  32 {
  33     NavigatorServiceWorker* supplement = toNavigatorServiceWorker(navigator);
  34     if (!supplement) {
  35         supplement = new NavigatorServiceWorker(navigator);
  36         provideTo(navigator, supplementName(), adoptPtrWillBeNoop(supplement));
  37         // Initialize ServiceWorkerContainer too.
  38         supplement->serviceWorker();
  39     }
  40     return *supplement;
  41 }
  42
  43 NavigatorServiceWorker* NavigatorServiceWorker::toNavigatorServiceWorker(Navigator& navigator)
  44 {
  45     return static_cast<NavigatorServiceWorker*>(WillBeHeapSupplement<Navigator>::from(navigator, supplementName()));
  46 }
  47
  48 const char* NavigatorServiceWorker::supplementName()
  49 {
  50     return "NavigatorServiceWorker";
  51 }
  52
  53 ServiceWorkerContainer* NavigatorServiceWorker::serviceWorker(Navigator& navigator)
  54 {
  55     return NavigatorServiceWorker::from(navigator).serviceWorker();
  56 }
  57
  58 ServiceWorkerContainer* NavigatorServiceWorker::serviceWorker()
  59 {
  60     if (!m_serviceWorker && frame()) {
  61         ASSERT(frame()->domWindow());
  62         m_serviceWorker = ServiceWorkerContainer::create(frame()->domWindow()->executionContext());
  63     }
  64     return m_serviceWorker.get();
  65 }
  66
  67 void NavigatorServiceWorker::willDetachGlobalObjectFromFrame()
  68 {
  69     if (m_serviceWorker) {
  70         m_serviceWorker->willBeDetachedFromFrame();
  71         m_serviceWorker = nullptr;
  72     }
  73 }
  74
  75 void NavigatorServiceWorker::trace(Visitor* visitor)
  76 {
  77     visitor->trace(m_serviceWorker);
  78     WillBeHeapSupplement<Navigator>::trace(visitor);
  79     DOMWindowProperty::trace(visitor);
  80 }
  81
  82 } // namespace blink