Index: content/browser/renderer_host/device_motion_browser_message_filter.cc |
diff --git a/content/browser/renderer_host/device_motion_browser_message_filter.cc b/content/browser/renderer_host/device_motion_browser_message_filter.cc |
new file mode 100644 |
index 0000000000000000000000000000000000000000..ef11b876888378f1476b3b8b07125d855e27dec6 |
--- /dev/null |
+++ b/content/browser/renderer_host/device_motion_browser_message_filter.cc |
@@ -0,0 +1,64 @@ |
+// Copyright (c) 2013 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/device_motion_browser_message_filter.h" |
+ |
+#include "content/browser/device_orientation/device_motion_service.h" |
+#include "content/common/device_motion_messages.h" |
+ |
+namespace content { |
+ |
+DeviceMotionBrowserMessageFilter::DeviceMotionBrowserMessageFilter() |
+ : is_started_(false) { |
+} |
+ |
+DeviceMotionBrowserMessageFilter::~DeviceMotionBrowserMessageFilter() { |
+ DCHECK(BrowserThread::CurrentlyOn(BrowserThread::IO)); |
+ if (is_started_) |
+ DeviceMotionService::GetInstance()->RemoveConsumer(); |
+} |
+ |
+bool DeviceMotionBrowserMessageFilter::OnMessageReceived( |
+ const IPC::Message& message, |
+ bool* message_was_ok) { |
+ bool handled = true; |
+ IPC_BEGIN_MESSAGE_MAP_EX(DeviceMotionBrowserMessageFilter, |
+ message, |
+ *message_was_ok) |
+ IPC_MESSAGE_HANDLER(DeviceMotionHostMsg_StartPolling, |
+ OnDeviceMotionStartPolling) |
+ IPC_MESSAGE_HANDLER(DeviceMotionHostMsg_StopPolling, |
+ OnDeviceMotionStopPolling) |
+ IPC_MESSAGE_UNHANDLED(handled = false) |
+ IPC_END_MESSAGE_MAP_EX() |
+ return handled; |
+} |
+ |
+void DeviceMotionBrowserMessageFilter::OnDeviceMotionStartPolling() { |
+ if (!is_started_) { |
darin (slow to review)
2013/06/24 23:40:34
nit: Consider returning early when is_started_ is
timvolodine
2013/06/25 03:36:07
Done.
|
+ is_started_ = true; |
+ DeviceMotionService::GetInstance()->AddConsumer(); |
+ DidStartDeviceMotionPolling(); |
+ } else { |
+ // Currently we only expect the renderer to tell us once to start. |
+ NOTREACHED(); |
darin (slow to review)
2013/06/24 23:40:34
Note that in release builds, this NOTREACHED will
timvolodine
2013/06/25 03:36:07
Ack.
Added a DCHECK to catch those messages in deb
|
+ } |
+} |
+ |
+void DeviceMotionBrowserMessageFilter::OnDeviceMotionStopPolling() { |
+ if (is_started_) { |
+ is_started_ = false; |
+ DeviceMotionService::GetInstance()->RemoveConsumer(); |
+ } else { |
+ NOTREACHED(); |
+ } |
+} |
+ |
+void DeviceMotionBrowserMessageFilter::DidStartDeviceMotionPolling() { |
+ Send(new DeviceMotionMsg_DidStartPolling( |
+ DeviceMotionService::GetInstance()->GetSharedMemoryHandleForProcess( |
+ peer_handle()))); |
+} |
+ |
+} // namespace content |