lib: intro android::vibration

Signed-off-by: Alexis Laferrière <alexis.laf@xymus.net>

diff --git a/lib/android/vibration.nit b/lib/android/vibration.nit
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+++ b/lib/android/vibration.nit
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+# This file is part of NIT ( http://www.nitlanguage.org ).
+#
+# Copyright 2014 Alexis Laferrière <alexis.laf@xymus.net>
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+# Vibration services for Android
+#
+# Importing this module will trigger the use of the VIBRATE permission
+module vibration is
+       android_manifest("""<uses-permission android:name="android.permission.VIBRATE" />""")
+end
+
+import native_app_glue
+
+# Handle to an Android vibrator
+extern class Vibrator in "Java" `{ android.os.Vibrator `}
+       super JavaObject
+       redef type SELF: Vibrator
+
+       # Vibrate for `n` miliseconds
+       fun vibrate(n: Int) in "Java" `{ recv.vibrate(n); `}
+
+       # Does this devices has a vibrator
+       #
+       # TODO activate in API 11
+       #fun exists: Bool in "Java" `{ return recv.hasVibrator(); `}
+
+       # Turn off the vibration
+       fun cancel in "Java" `{ recv.cancel(); `}
+end
+
+redef class App
+       # Get the handle to this device vibrator as a global ref
+       fun vibrator: Vibrator is cached do
+               var v = vibrator_native(native_activity)
+               return v.new_global_ref
+       end
+       private fun vibrator_native(context: NativeActivity): Vibrator in "Java" `{
+               android.os.Vibrator v = (android.os.Vibrator)
+                       context.getSystemService(android.content.Context.VIBRATOR_SERVICE);
+               return v;
+       `}
+end