Vibration API: plumbing from Blink to Java.

content/public/android/java/src/org/chromium/content/browser/VibrationService.java

Index: content/public/android/java/src/org/chromium/content/browser/VibrationService.java
diff --git a/content/public/android/java/src/org/chromium/content/browser/VibrationService.java b/content/public/android/java/src/org/chromium/content/browser/VibrationService.java
new file mode 100644
index 0000000000000000000000000000000000000000..4c77f04244cb5aeede37fd3d8b2646d3ef59ee34
--- /dev/null
+++ b/content/public/android/java/src/org/chromium/content/browser/VibrationService.java
@@ -0,0 +1,39 @@
+// 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.
+
+package org.chromium.content.browser;
+
+import android.content.Context;
+import android.os.Vibrator;
+
+import org.chromium.base.CalledByNative;
+import org.chromium.base.JNINamespace;
+
+/**
+ * This is the implementation of the C++ counterpart VibrationService.
+ */
+@JNINamespace("content")
+class VibrationService {
+
+    private final Vibrator mVibrator;
+
+    @CalledByNative
+    private static VibrationService create(Context context) {
+        return new VibrationService(context);
+    }
+
+    @CalledByNative
+    private void vibrate(long milliseconds) {

[palmer, 2013/06/21 18:17:40]

The IPC sends unsigned int, but Java long is defined to be signed 64-bit. It
feels best to me to use the same type everywhere, i.e. int64_t in the IPC and
long in Java.

Alternately, take an int here, and send int32_t over IPC. But the Android
vibrator wants a long, so let's just use that everywhere.

[Michael van Ouwerkerk, 2013/06/24 13:46:57]

So, I chose an int :-)

On 2013/06/21 18:17:40, Chromium Palmer wrote:

+        mVibrator.vibrate(milliseconds);
+    }
+
+    @CalledByNative
+    private void cancelVibration() {
+        mVibrator.cancel();
+    }
+
+    private VibrationService(Context context) {
+        mVibrator = (Vibrator) context.getSystemService(Context.VIBRATOR_SERVICE);
+    }
+}