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/*
* Copyright (C) 2012 The Android Open Source Project
*
* 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.
*/
package org.kelar.inputmethod.latin;
import android.content.Context;
import android.media.AudioManager;
import android.os.Vibrator;
import android.view.HapticFeedbackConstants;
import android.view.View;
import org.kelar.inputmethod.latin.common.Constants;
import org.kelar.inputmethod.latin.settings.SettingsValues;
/**
* This class gathers audio feedback and haptic feedback functions.
*
* It offers a consistent and simple interface that allows LatinIME to forget about the
* complexity of settings and the like.
*/
public final class AudioAndHapticFeedbackManager {
private AudioManager mAudioManager;
private Vibrator mVibrator;
private SettingsValues mSettingsValues;
private boolean mSoundOn;
private static final AudioAndHapticFeedbackManager sInstance =
new AudioAndHapticFeedbackManager();
public static AudioAndHapticFeedbackManager getInstance() {
return sInstance;
}
private AudioAndHapticFeedbackManager() {
// Intentional empty constructor for singleton.
}
public static void init(final Context context) {
sInstance.initInternal(context);
}
private void initInternal(final Context context) {
mAudioManager = (AudioManager) context.getSystemService(Context.AUDIO_SERVICE);
mVibrator = (Vibrator) context.getSystemService(Context.VIBRATOR_SERVICE);
}
public void performHapticAndAudioFeedback(final int code,
final View viewToPerformHapticFeedbackOn) {
performHapticFeedback(viewToPerformHapticFeedbackOn);
performAudioFeedback(code);
}
public boolean hasVibrator() {
return mVibrator != null && mVibrator.hasVibrator();
}
public void vibrate(final long milliseconds) {
if (mVibrator == null) {
return;
}
mVibrator.vibrate(milliseconds);
}
private boolean reevaluateIfSoundIsOn() {
if (mSettingsValues == null || !mSettingsValues.mSoundOn || mAudioManager == null) {
return false;
}
return mAudioManager.getRingerMode() == AudioManager.RINGER_MODE_NORMAL;
}
public void performAudioFeedback(final int code) {
// if mAudioManager is null, we can't play a sound anyway, so return
if (mAudioManager == null) {
return;
}
if (!mSoundOn) {
return;
}
final int sound;
switch (code) {
case Constants.CODE_DELETE:
sound = AudioManager.FX_KEYPRESS_DELETE;
break;
case Constants.CODE_ENTER:
sound = AudioManager.FX_KEYPRESS_RETURN;
break;
case Constants.CODE_SPACE:
sound = AudioManager.FX_KEYPRESS_SPACEBAR;
break;
default:
sound = AudioManager.FX_KEYPRESS_STANDARD;
break;
}
mAudioManager.playSoundEffect(sound, mSettingsValues.mKeypressSoundVolume);
}
public void performHapticFeedback(final View viewToPerformHapticFeedbackOn) {
if (!mSettingsValues.mVibrateOn) {
return;
}
if (mSettingsValues.mKeypressVibrationDuration >= 0) {
vibrate(mSettingsValues.mKeypressVibrationDuration);
return;
}
// Go ahead with the system default
if (viewToPerformHapticFeedbackOn != null) {
viewToPerformHapticFeedbackOn.performHapticFeedback(
HapticFeedbackConstants.KEYBOARD_TAP);
}
}
public void onSettingsChanged(final SettingsValues settingsValues) {
mSettingsValues = settingsValues;
mSoundOn = reevaluateIfSoundIsOn();
}
public void onRingerModeChanged() {
mSoundOn = reevaluateIfSoundIsOn();
}
}
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