src/third_party/WebKit/Source/modules/gamepad/GamepadDispatcher.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/gamepad/GamepadDispatcher.h"
   7
   8 #include "modules/gamepad/NavigatorGamepad.h"
   9 #include "public/platform/Platform.h"
  10 #include "wtf/TemporaryChange.h"
  11
  12 namespace WebCore {
  13
  14 GamepadDispatcher& GamepadDispatcher::instance()
  15 {
  16     DEFINE_STATIC_LOCAL(GamepadDispatcher, gamepadDispatcher, ());
  17     return gamepadDispatcher;
  18 }
  19
  20 void GamepadDispatcher::addClient(NavigatorGamepad* client)
  21 {
  22     addController(client);
  23 }
  24
  25 void GamepadDispatcher::removeClient(NavigatorGamepad* client)
  26 {
  27     removeController(client);
  28 }
  29
  30 void GamepadDispatcher::sampleGamepads(blink::WebGamepads& gamepads)
  31 {
  32     ASSERT(!m_controllers.isEmpty());
  33     blink::Platform::current()->sampleGamepads(gamepads);
  34 }
  35
  36 GamepadDispatcher::GamepadDispatcher()
  37 {
  38 }
  39
  40 GamepadDispatcher::~GamepadDispatcher()
  41 {
  42 }
  43
  44 void GamepadDispatcher::didConnectGamepad(unsigned index, const blink::WebGamepad& gamepad)
  45 {
  46     dispatchDidConnectOrDisconnectGamepad(index, gamepad, true);
  47 }
  48
  49 void GamepadDispatcher::didDisconnectGamepad(unsigned index, const blink::WebGamepad& gamepad)
  50 {
  51     dispatchDidConnectOrDisconnectGamepad(index, gamepad, false);
  52 }
  53
  54 void GamepadDispatcher::dispatchDidConnectOrDisconnectGamepad(unsigned index, const blink::WebGamepad& gamepad, bool connected)
  55 {
  56     {
  57         TemporaryChange<bool> changeIsDispatching(m_isDispatching, true);
  58         // Don't fire controllers removed or added during event dispatch.
  59         size_t size = m_controllers.size();
  60         for (size_t i = 0; i < size; ++i) {
  61             if (m_controllers[i])
  62                 static_cast<NavigatorGamepad*>(m_controllers[i])->didConnectOrDisconnectGamepad(index, gamepad, connected);
  63         }
  64     }
  65
  66     if (m_needsPurge)
  67         purgeControllers();
  68 }
  69
  70 void GamepadDispatcher::startListening()
  71 {
  72     blink::Platform::current()->setGamepadListener(this);
  73 }
  74
  75 void GamepadDispatcher::stopListening()
  76 {
  77     blink::Platform::current()->setGamepadListener(0);
  78 }
  79
  80 } // namespace WebCore