src/third_party/WebKit/Source/modules/netinfo/NavigatorNetworkInformation.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/netinfo/NavigatorNetworkInformation.h"
   7
   8 #include "core/frame/LocalDOMWindow.h"
   9 #include "core/frame/LocalFrame.h"
  10 #include "core/frame/Navigator.h"
  11 #include "modules/netinfo/NetworkInformation.h"
  12
  13 namespace blink {
  14
  15 NavigatorNetworkInformation::NavigatorNetworkInformation(Navigator& navigator)
  16     : DOMWindowProperty(navigator.frame())
  17 {
  18 }
  19
  20 DEFINE_EMPTY_DESTRUCTOR_WILL_BE_REMOVED(NavigatorNetworkInformation);
  21
  22 NavigatorNetworkInformation& NavigatorNetworkInformation::from(Navigator& navigator)
  23 {
  24     NavigatorNetworkInformation* supplement = toNavigatorNetworkInformation(navigator);
  25     if (!supplement) {
  26         supplement = new NavigatorNetworkInformation(navigator);
  27         provideTo(navigator, supplementName(), adoptPtrWillBeNoop(supplement));
  28     }
  29     return *supplement;
  30 }
  31
  32 NavigatorNetworkInformation* NavigatorNetworkInformation::toNavigatorNetworkInformation(Navigator& navigator)
  33 {
  34     return static_cast<NavigatorNetworkInformation*>(WillBeHeapSupplement<Navigator>::from(navigator, supplementName()));
  35 }
  36
  37 const char* NavigatorNetworkInformation::supplementName()
  38 {
  39     return "NavigatorNetworkInformation";
  40 }
  41
  42 NetworkInformation* NavigatorNetworkInformation::connection(Navigator& navigator)
  43 {
  44     return NavigatorNetworkInformation::from(navigator).connection();
  45 }
  46
  47 NetworkInformation* NavigatorNetworkInformation::connection()
  48 {
  49     if (!m_connection && frame()) {
  50         ASSERT(frame()->domWindow());
  51         m_connection = NetworkInformation::create(frame()->domWindow()->executionContext());
  52     }
  53     return m_connection.get();
  54 }
  55
  56 void NavigatorNetworkInformation::trace(Visitor* visitor)
  57 {
  58     visitor->trace(m_connection);
  59     WillBeHeapSupplement<Navigator>::trace(visitor);
  60     DOMWindowProperty::trace(visitor);
  61 }
  62
  63 } // namespace blink