| /* |
| * Copyright (C) 2018 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.Context; |
| |
| import androidx.preference.Preference; |
| import androidx.preference.PreferenceScreen; |
| |
| import com.android.settings.R; |
| import com.android.settings.core.BasePreferenceController; |
| import com.android.settingslib.core.lifecycle.LifecycleObserver; |
| import com.android.settingslib.core.lifecycle.events.OnStart; |
| import com.android.settingslib.core.lifecycle.events.OnStop; |
| |
| public class TopLevelBatteryPreferenceController extends BasePreferenceController implements |
| LifecycleObserver, OnStart, OnStop { |
| |
| private final BatteryBroadcastReceiver mBatteryBroadcastReceiver; |
| private Preference mPreference; |
| private BatteryInfo mBatteryInfo; |
| |
| public TopLevelBatteryPreferenceController(Context context, String preferenceKey) { |
| super(context, preferenceKey); |
| mBatteryBroadcastReceiver = new BatteryBroadcastReceiver(mContext); |
| mBatteryBroadcastReceiver.setBatteryChangedListener(type -> { |
| BatteryInfo.getBatteryInfo(mContext, info -> { |
| mBatteryInfo = info; |
| updateState(mPreference); |
| }, true /* shortString */); |
| }); |
| } |
| |
| @Override |
| public int getAvailabilityStatus() { |
| return mContext.getResources().getBoolean(R.bool.config_show_top_level_battery) |
| ? AVAILABLE_UNSEARCHABLE |
| : UNSUPPORTED_ON_DEVICE; |
| } |
| |
| @Override |
| public void displayPreference(PreferenceScreen screen) { |
| super.displayPreference(screen); |
| mPreference = screen.findPreference(getPreferenceKey()); |
| } |
| |
| @Override |
| public void onStart() { |
| mBatteryBroadcastReceiver.register(); |
| } |
| |
| @Override |
| public void onStop() { |
| mBatteryBroadcastReceiver.unRegister(); |
| } |
| |
| @Override |
| public CharSequence getSummary() { |
| return getDashboardLabel(mContext, mBatteryInfo); |
| } |
| |
| static CharSequence getDashboardLabel(Context context, BatteryInfo info) { |
| if (info == null || context == null) { |
| return null; |
| } |
| CharSequence label; |
| if (!info.discharging && info.chargeLabel != null) { |
| label = info.chargeLabel; |
| } else if (info.remainingLabel == null) { |
| label = info.batteryPercentString; |
| } else { |
| label = context.getString(R.string.power_remaining_settings_home_page, |
| info.batteryPercentString, |
| info.remainingLabel); |
| } |
| return label; |
| } |
| } |