src/content/browser/renderer_host/gamepad_browser_message_filter.cc

   1 // Copyright (c) 2011 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 "content/browser/renderer_host/gamepad_browser_message_filter.h"
   6
   7 #include "content/browser/gamepad/gamepad_service.h"
   8 #include "content/common/gamepad_messages.h"
   9
  10 namespace content {
  11
  12 GamepadBrowserMessageFilter::GamepadBrowserMessageFilter()
  13     : BrowserMessageFilter(GamepadMsgStart),
  14       is_started_(false) {
  15 }
  16
  17 GamepadBrowserMessageFilter::~GamepadBrowserMessageFilter() {
  18   DCHECK_CURRENTLY_ON(BrowserThread::IO);
  19   if (is_started_)
  20     GamepadService::GetInstance()->RemoveConsumer(this);
  21 }
  22
  23 bool GamepadBrowserMessageFilter::OnMessageReceived(
  24     const IPC::Message& message,
  25     bool* message_was_ok) {
  26   bool handled = true;
  27   IPC_BEGIN_MESSAGE_MAP_EX(GamepadBrowserMessageFilter,
  28                            message,
  29                            *message_was_ok)
  30     IPC_MESSAGE_HANDLER(GamepadHostMsg_StartPolling, OnGamepadStartPolling)
  31     IPC_MESSAGE_HANDLER(GamepadHostMsg_StopPolling, OnGamepadStopPolling)
  32     IPC_MESSAGE_UNHANDLED(handled = false)
  33   IPC_END_MESSAGE_MAP_EX()
  34   return handled;
  35 }
  36
  37 void GamepadBrowserMessageFilter::OnGamepadConnected(
  38     unsigned index,
  39     const blink::WebGamepad& gamepad) {
  40   Send(new GamepadMsg_GamepadConnected(index, gamepad));
  41 }
  42
  43 void GamepadBrowserMessageFilter::OnGamepadDisconnected(
  44     unsigned index,
  45     const blink::WebGamepad& gamepad) {
  46   Send(new GamepadMsg_GamepadDisconnected(index, gamepad));
  47 }
  48
  49 void GamepadBrowserMessageFilter::OnGamepadStartPolling(
  50     base::SharedMemoryHandle* renderer_handle) {
  51   GamepadService* service = GamepadService::GetInstance();
  52   CHECK(!is_started_);
  53   is_started_ = true;
  54   service->ConsumerBecameActive(this);
  55   *renderer_handle = service->GetSharedMemoryHandleForProcess(PeerHandle());
  56 }
  57
  58 void GamepadBrowserMessageFilter::OnGamepadStopPolling() {
  59   CHECK(is_started_);
  60   is_started_ = false;
  61   GamepadService::GetInstance()->ConsumerBecameInactive(this);
  62 }
  63
  64 }  // namespace content