Vibration API: plumbing from Blink to Java.

content/browser/vibration/vibration_browser_message_filter.cc

Index: content/browser/vibration/vibration_browser_message_filter.cc
diff --git a/content/browser/vibration/vibration_browser_message_filter.cc b/content/browser/vibration/vibration_browser_message_filter.cc
new file mode 100644
index 0000000000000000000000000000000000000000..3da39d8dc7375cb9ca56587928a3139f7e3f76a5
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+++ b/content/browser/vibration/vibration_browser_message_filter.cc
@@ -0,0 +1,50 @@
+// 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/vibration/vibration_browser_message_filter.h"
+
+#include <algorithm>
+
+#include "content/common/view_messages.h"
+
+namespace content {
+
+// Maximum duration of a vibration is 10 seconds.
+const unsigned kVibrationDurationMax = 10000;

[Peter Beverloo, 2013/06/13 11:27:45]

kMaximumVibrationDurationMs

[Michael van Ouwerkerk, 2013/06/18 14:39:23]

Done.

+
+VibrationBrowserMessageFilter::VibrationBrowserMessageFilter(
+    scoped_ptr<VibrationService> vibration_service) {
+  // TODO(mvanouwerkerk): Instantiate this lazily? We might want to get it early
+  // anyway so we can decide whether to expose navigator.vibrate or not.

[Peter Beverloo, 2013/06/13 11:27:45]

I think this reasoning would be better stored in a bug. Would something like the
following work for you?

// TODO(mvanouwerkerk): Consider instantiating this lazily. See crbug.com/XXXXX

[Michael van Ouwerkerk, 2013/06/18 14:39:23]

Done.

+  vibration_service_.reset(vibration_service.release());
+}
+
+VibrationBrowserMessageFilter::~VibrationBrowserMessageFilter() {
+  DCHECK(BrowserThread::CurrentlyOn(BrowserThread::IO));
+  vibration_service_->CancelVibration();
+}
+
+bool VibrationBrowserMessageFilter::OnMessageReceived(
+    const IPC::Message& message,
+    bool* message_was_ok) {
+  bool handled = true;
+  IPC_BEGIN_MESSAGE_MAP_EX(VibrationBrowserMessageFilter,
+                           message,
+                           *message_was_ok)
+    IPC_MESSAGE_HANDLER(ViewHostMsg_Vibrate, OnVibrate)
+    IPC_MESSAGE_HANDLER(ViewHostMsg_CancelVibration, OnCancelVibration)
+    IPC_MESSAGE_UNHANDLED(handled = false)
+  IPC_END_MESSAGE_MAP_EX()
+  return handled;
+}
+
+void VibrationBrowserMessageFilter::OnVibrate(unsigned time) {
+  vibration_service_->Vibrate(std::min(time, kVibrationDurationMax));
+}
+
+void VibrationBrowserMessageFilter::OnCancelVibration() {
+  vibration_service_->CancelVibration();
+}
+
+}  // namespace content