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/*
* Copyright (C) 2017 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.settings.fuelgauge;
import android.content.BroadcastReceiver;
import android.content.Context;
import android.content.Intent;
import android.content.IntentFilter;
import android.os.PowerManager;
import androidx.annotation.IntDef;
import androidx.annotation.VisibleForTesting;
import com.android.settings.Utils;
import java.lang.annotation.Retention;
import java.lang.annotation.RetentionPolicy;
/**
* Use this broadcastReceiver to listen to the battery change, and it will invoke
* {@link OnBatteryChangedListener} if any of the following has been changed:
*
* 1. Battery level(e.g. 100%->99%)
* 2. Battery status(e.g. plugged->unplugged)
* 3. Battery saver(e.g. off->on)
*/
public class BatteryBroadcastReceiver extends BroadcastReceiver {
/**
* Callback when the following has been changed:
*
* Battery level(e.g. 100%->99%)
* Battery status(e.g. plugged->unplugged)
* Battery saver(e.g. off->on)
*/
public interface OnBatteryChangedListener {
void onBatteryChanged(@BatteryUpdateType int type);
}
@Retention(RetentionPolicy.SOURCE)
@IntDef({BatteryUpdateType.MANUAL,
BatteryUpdateType.BATTERY_LEVEL,
BatteryUpdateType.BATTERY_SAVER,
BatteryUpdateType.BATTERY_STATUS})
public @interface BatteryUpdateType {
int MANUAL = 0;
int BATTERY_LEVEL = 1;
int BATTERY_SAVER = 2;
int BATTERY_STATUS = 3;
}
@VisibleForTesting
String mBatteryLevel;
@VisibleForTesting
String mBatteryStatus;
private OnBatteryChangedListener mBatteryListener;
private Context mContext;
public BatteryBroadcastReceiver(Context context) {
mContext = context;
}
@Override
public void onReceive(Context context, Intent intent) {
updateBatteryStatus(intent, false /* forceUpdate */);
}
public void setBatteryChangedListener(OnBatteryChangedListener lsn) {
mBatteryListener = lsn;
}
public void register() {
final IntentFilter intentFilter = new IntentFilter();
intentFilter.addAction(Intent.ACTION_BATTERY_CHANGED);
intentFilter.addAction(PowerManager.ACTION_POWER_SAVE_MODE_CHANGED);
final Intent intent = mContext.registerReceiver(this, intentFilter);
updateBatteryStatus(intent, true /* forceUpdate */);
}
public void unRegister() {
mContext.unregisterReceiver(this);
}
private void updateBatteryStatus(Intent intent, boolean forceUpdate) {
if (intent != null && mBatteryListener != null) {
if (Intent.ACTION_BATTERY_CHANGED.equals(intent.getAction())) {
final String batteryLevel = Utils.getBatteryPercentage(intent);
final String batteryStatus = Utils.getBatteryStatus(
mContext.getResources(), intent);
if (forceUpdate) {
mBatteryListener.onBatteryChanged(BatteryUpdateType.MANUAL);
} else if(!batteryLevel.equals(mBatteryLevel)) {
mBatteryListener.onBatteryChanged(BatteryUpdateType.BATTERY_LEVEL);
} else if (!batteryStatus.equals(mBatteryStatus)) {
mBatteryListener.onBatteryChanged(BatteryUpdateType.BATTERY_STATUS);
}
mBatteryLevel = batteryLevel;
mBatteryStatus = batteryStatus;
} else if (PowerManager.ACTION_POWER_SAVE_MODE_CHANGED.equals(intent.getAction())) {
mBatteryListener.onBatteryChanged(BatteryUpdateType.BATTERY_SAVER);
}
}
}
}