1 /* 2 * Copyright (C) 2018 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17 package com.android.settings.fuelgauge; 18 19 import android.content.Context; 20 import android.text.BidiFormatter; 21 22 import androidx.preference.Preference; 23 import androidx.preference.PreferenceScreen; 24 25 import com.android.settings.R; 26 import com.android.settings.core.BasePreferenceController; 27 import com.android.settingslib.core.lifecycle.LifecycleObserver; 28 import com.android.settingslib.core.lifecycle.events.OnStart; 29 import com.android.settingslib.core.lifecycle.events.OnStop; 30 31 public class TopLevelBatteryPreferenceController extends BasePreferenceController implements 32 LifecycleObserver, OnStart, OnStop { 33 34 private final BatteryBroadcastReceiver mBatteryBroadcastReceiver; 35 private Preference mPreference; 36 private BatteryInfo mBatteryInfo; 37 TopLevelBatteryPreferenceController(Context context, String preferenceKey)38 public TopLevelBatteryPreferenceController(Context context, String preferenceKey) { 39 super(context, preferenceKey); 40 mBatteryBroadcastReceiver = new BatteryBroadcastReceiver(mContext); 41 mBatteryBroadcastReceiver.setBatteryChangedListener(type -> { 42 BatteryInfo.getBatteryInfo(mContext, info -> { 43 mBatteryInfo = info; 44 updateState(mPreference); 45 }, true /* shortString */); 46 }); 47 } 48 49 @Override getAvailabilityStatus()50 public int getAvailabilityStatus() { 51 return mContext.getResources().getBoolean(R.bool.config_show_top_level_battery) 52 ? AVAILABLE_UNSEARCHABLE 53 : UNSUPPORTED_ON_DEVICE; 54 } 55 56 @Override displayPreference(PreferenceScreen screen)57 public void displayPreference(PreferenceScreen screen) { 58 super.displayPreference(screen); 59 mPreference = screen.findPreference(getPreferenceKey()); 60 } 61 62 @Override onStart()63 public void onStart() { 64 mBatteryBroadcastReceiver.register(); 65 } 66 67 @Override onStop()68 public void onStop() { 69 mBatteryBroadcastReceiver.unRegister(); 70 } 71 72 @Override getSummary()73 public CharSequence getSummary() { 74 return getDashboardLabel(mContext, mBatteryInfo); 75 } 76 getDashboardLabel(Context context, BatteryInfo info)77 static CharSequence getDashboardLabel(Context context, BatteryInfo info) { 78 if (info == null || context == null) { 79 return null; 80 } 81 CharSequence label; 82 final BidiFormatter formatter = BidiFormatter.getInstance(); 83 if (!info.discharging && info.chargeLabel != null) { 84 label = info.chargeLabel; 85 } else if (info.remainingLabel == null) { 86 label = info.batteryPercentString; 87 } else { 88 label = context.getString(R.string.power_remaining_settings_home_page, 89 formatter.unicodeWrap(info.batteryPercentString), 90 formatter.unicodeWrap(info.remainingLabel)); 91 } 92 return label; 93 } 94 } 95