/*
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* Copyright (C) 2018 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package com.android.systemui.statusbar;
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import android.content.Context;
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import android.database.ContentObserver;
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import android.media.AudioAttributes;
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import android.os.AsyncTask;
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import android.os.Handler;
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import android.os.UserHandle;
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import android.os.VibrationEffect;
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import android.os.Vibrator;
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import android.provider.Settings;
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import javax.inject.Inject;
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import javax.inject.Singleton;
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/**
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*/
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@Singleton
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public class VibratorHelper {
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private final Vibrator mVibrator;
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private final Context mContext;
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private boolean mHapticFeedbackEnabled;
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private static final AudioAttributes STATUS_BAR_VIBRATION_ATTRIBUTES =
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new AudioAttributes.Builder()
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.setContentType(AudioAttributes.CONTENT_TYPE_SONIFICATION)
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.setUsage(AudioAttributes.USAGE_ASSISTANCE_SONIFICATION)
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.build();
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final private ContentObserver mVibrationObserver = new ContentObserver(Handler.getMain()) {
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@Override
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public void onChange(boolean selfChange) {
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updateHapticFeedBackEnabled();
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}
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};
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/**
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*/
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@Inject
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public VibratorHelper(Context context) {
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mContext = context;
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mVibrator = context.getSystemService(Vibrator.class);
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mContext.getContentResolver().registerContentObserver(
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Settings.System.getUriFor(Settings.System.HAPTIC_FEEDBACK_ENABLED), true,
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mVibrationObserver);
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mVibrationObserver.onChange(false /* selfChange */);
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}
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public void vibrate(final int effectId) {
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if (mHapticFeedbackEnabled) {
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AsyncTask.execute(() ->
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mVibrator.vibrate(VibrationEffect.get(effectId, false /* fallback */),
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STATUS_BAR_VIBRATION_ATTRIBUTES));
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}
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}
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private void updateHapticFeedBackEnabled() {
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mHapticFeedbackEnabled = Settings.System.getIntForUser(mContext.getContentResolver(),
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Settings.System.HAPTIC_FEEDBACK_ENABLED, 0, UserHandle.USER_CURRENT) != 0;
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}
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}
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