Make VibrationMessageFilter available to other platforms.

content/browser/vibration/vibration_dispatcher_host.cc

+// Copyright 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_dispatcher_host.h"
+
+#include <algorithm>
+
+#include "base/safe_numerics.h"
+#include "content/common/view_messages.h"
+#include "content/port/browser/vibration_provider.h"
+#include "content/public/browser/content_browser_client.h"
+#include "content/public/common/content_client.h"
+#include "third_party/WebKit/public/platform/WebVibration.h"
+
+#if defined(OS_ANDROID)
+#include "content/browser/vibration/vibration_provider_android.h"
+#endif
+
+namespace content {
+
+class VibrationDispatcherHostImpl
+    : public VibrationDispatcherHost {
+ public:
+  VibrationDispatcherHostImpl();
+
+  // BrowserMessageFilter implementation.
+  virtual bool OnMessageReceived(const IPC::Message& message,
+                                 bool* message_was_ok) OVERRIDE;
+
+  void OnVibrate(int64 milliseconds);
+  void OnCancelVibration();
+
+ private:
+  virtual ~VibrationDispatcherHostImpl();
+
+  VibrationProvider* provider_;
+  DISALLOW_COPY_AND_ASSIGN(VibrationDispatcherHostImpl);
+};
+
+// Minimum duration of a vibration is 1 millisecond.
+const int64 kMinimumVibrationDurationMs = 1;
+
+VibrationDispatcherHostImpl::VibrationDispatcherHostImpl() {
+  provider_ = GetContentClient()->browser()->OverrideVibrationProvider();
+#if defined(OS_ANDROID)
+  if (!provider_)
+    provider_ = new VibrationProviderAndroid();
+#endif
+}
+
+VibrationDispatcherHostImpl::~VibrationDispatcherHostImpl() {
+}
+
+bool VibrationDispatcherHostImpl::OnMessageReceived(
+    const IPC::Message& message,
+    bool* message_was_ok) {
+  bool handled = true;
+  IPC_BEGIN_MESSAGE_MAP_EX(VibrationDispatcherHostImpl,
+                           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 VibrationDispatcherHostImpl::OnVibrate(int64 milliseconds) {
+  if (!provider_) return;
+
+  // Though the Blink implementation already sanitizes vibration times, don't
+  // trust any values passed from the renderer.
+  milliseconds = std::max(kMinimumVibrationDurationMs, std::min(milliseconds,
+          base::checked_numeric_cast<int64>(WebKit::kVibrationDurationMax)));
+
+  provider_->OnVibrate(milliseconds);
+}
+
+void VibrationDispatcherHostImpl::OnCancelVibration() {
+  if (!provider_) return;
+
+  provider_->OnCancelVibration();
+}
+
+// static
+VibrationDispatcherHost* VibrationDispatcherHost::New() {
+  return new VibrationDispatcherHostImpl();
+}
+
+VibrationDispatcherHost::VibrationDispatcherHost() {
+}
+
+VibrationDispatcherHost::~VibrationDispatcherHost() {
+}
+
+}  // namespace content