| // Copyright (c) 2011 The Chromium Authors. All rights reserved. |
| // Use of this source code is governed by a BSD-style license that can be |
| // found in the LICENSE file. |
| |
| #include "content/browser/renderer_host/gamepad_browser_message_filter.h" |
| |
| #include "content/browser/gamepad/gamepad_service.h" |
| #include "content/common/gamepad_messages.h" |
| |
| namespace content { |
| |
| GamepadBrowserMessageFilter::GamepadBrowserMessageFilter() |
| : is_started_(false) { |
| } |
| |
| GamepadBrowserMessageFilter::~GamepadBrowserMessageFilter() { |
| DCHECK(BrowserThread::CurrentlyOn(BrowserThread::IO)); |
| if (is_started_) |
| GamepadService::GetInstance()->RemoveConsumer(); |
| } |
| |
| bool GamepadBrowserMessageFilter::OnMessageReceived( |
| const IPC::Message& message, |
| bool* message_was_ok) { |
| bool handled = true; |
| IPC_BEGIN_MESSAGE_MAP_EX(GamepadBrowserMessageFilter, |
| message, |
| *message_was_ok) |
| IPC_MESSAGE_HANDLER(GamepadHostMsg_StartPolling, OnGamepadStartPolling) |
| IPC_MESSAGE_HANDLER(GamepadHostMsg_StopPolling, OnGamepadStopPolling) |
| IPC_MESSAGE_UNHANDLED(handled = false) |
| IPC_END_MESSAGE_MAP_EX() |
| return handled; |
| } |
| |
| void GamepadBrowserMessageFilter::OnGamepadStartPolling( |
| base::SharedMemoryHandle* renderer_handle) { |
| GamepadService* service = GamepadService::GetInstance(); |
| if (!is_started_) { |
| is_started_ = true; |
| service->AddConsumer(); |
| *renderer_handle = service->GetSharedMemoryHandleForProcess(PeerHandle()); |
| } else { |
| // Currently we only expect the renderer to tell us once to start. |
| NOTREACHED(); |
| } |
| } |
| |
| void GamepadBrowserMessageFilter::OnGamepadStopPolling() { |
| // TODO(scottmg): Probably get rid of this message. We can't trust it will |
| // arrive anyway if the renderer crashes, etc. |
| if (is_started_) { |
| is_started_ = false; |
| GamepadService::GetInstance()->RemoveConsumer(); |
| } else { |
| NOTREACHED(); |
| } |
| } |
| |
| } // namespace content |