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/*
* Copyright (C) 2015 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 com.android.dialer.voicemail;
import android.content.BroadcastReceiver;
import android.content.Context;
import android.content.Intent;
import android.content.IntentFilter;
import android.media.AudioManager;
import android.util.Log;
/** Listens for and caches headset state. */
class WiredHeadsetManager {
private static final String TAG = WiredHeadsetManager.class.getSimpleName();
interface Listener {
void onWiredHeadsetPluggedInChanged(boolean oldIsPluggedIn, boolean newIsPluggedIn);
}
/** Receiver for wired headset plugged and unplugged events. */
private class WiredHeadsetBroadcastReceiver extends BroadcastReceiver {
@Override
public void onReceive(Context context, Intent intent) {
if (AudioManager.ACTION_HEADSET_PLUG.equals(intent.getAction())) {
boolean isPluggedIn = intent.getIntExtra("state", 0) == 1;
Log.v(TAG, "ACTION_HEADSET_PLUG event, plugged in: " + isPluggedIn);
onHeadsetPluggedInChanged(isPluggedIn);
}
}
}
private final WiredHeadsetBroadcastReceiver mReceiver;
private boolean mIsPluggedIn;
private Listener mListener;
private Context mContext;
WiredHeadsetManager(Context context) {
mContext = context;
mReceiver = new WiredHeadsetBroadcastReceiver();
AudioManager audioManager = (AudioManager) context.getSystemService(Context.AUDIO_SERVICE);
mIsPluggedIn = audioManager.isWiredHeadsetOn();
}
void setListener(Listener listener) {
mListener = listener;
}
boolean isPluggedIn() {
return mIsPluggedIn;
}
void registerReceiver() {
// Register for misc other intent broadcasts.
IntentFilter intentFilter = new IntentFilter(Intent.ACTION_HEADSET_PLUG);
mContext.registerReceiver(mReceiver, intentFilter);
}
void unregisterReceiver() {
mContext.unregisterReceiver(mReceiver);
}
private void onHeadsetPluggedInChanged(boolean isPluggedIn) {
if (mIsPluggedIn != isPluggedIn) {
Log.v(TAG, "onHeadsetPluggedInChanged, mIsPluggedIn: " + mIsPluggedIn + " -> "
+ isPluggedIn);
boolean oldIsPluggedIn = mIsPluggedIn;
mIsPluggedIn = isPluggedIn;
if (mListener != null) {
mListener.onWiredHeadsetPluggedInChanged(oldIsPluggedIn, mIsPluggedIn);
}
}
}
}
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