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 NavigatorNetworkInformation::~NavigatorNetworkInformation()
  21 {
  22 }
  23
  24 NavigatorNetworkInformation& NavigatorNetworkInformation::from(Navigator& navigator)
  25 {
  26     NavigatorNetworkInformation* supplement = toNavigatorNetworkInformation(navigator);
  27     if (!supplement) {
  28         supplement = new NavigatorNetworkInformation(navigator);
  29         provideTo(navigator, supplementName(), adoptPtrWillBeNoop(supplement));
  30     }
  31     return *supplement;
  32 }
  33
  34 NavigatorNetworkInformation* NavigatorNetworkInformation::toNavigatorNetworkInformation(Navigator& navigator)
  35 {
  36     return static_cast<NavigatorNetworkInformation*>(WillBeHeapSupplement<Navigator>::from(navigator, supplementName()));
  37 }
  38
  39 const char* NavigatorNetworkInformation::supplementName()
  40 {
  41     return "NavigatorNetworkInformation";
  42 }
  43
  44 NetworkInformation* NavigatorNetworkInformation::connection(Navigator& navigator)
  45 {
  46     return NavigatorNetworkInformation::from(navigator).connection();
  47 }
  48
  49 NetworkInformation* NavigatorNetworkInformation::connection()
  50 {
  51     if (!m_connection && frame()) {
  52         ASSERT(frame()->domWindow());
  53         m_connection = NetworkInformation::create(frame()->domWindow()->executionContext());
  54     }
  55     return m_connection.get();
  56 }
  57
  58 void NavigatorNetworkInformation::trace(Visitor* visitor)
  59 {
  60     visitor->trace(m_connection);
  61     WillBeHeapSupplement<Navigator>::trace(visitor);
  62 }
  63
  64 } // namespace blink