| /* |
| * 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.batterysaver; |
| |
| import android.content.Context; |
| import android.os.PowerManager; |
| |
| import androidx.preference.Preference; |
| import androidx.preference.PreferenceScreen; |
| |
| import com.android.settings.core.TogglePreferenceController; |
| import com.android.settings.fuelgauge.BatterySaverReceiver; |
| import com.android.settings.widget.TwoStateButtonPreference; |
| import com.android.settingslib.core.lifecycle.LifecycleObserver; |
| import com.android.settingslib.core.lifecycle.events.OnStart; |
| import com.android.settingslib.core.lifecycle.events.OnStop; |
| import com.android.settingslib.fuelgauge.BatterySaverUtils; |
| |
| /** |
| * Controller to update the battery saver button |
| */ |
| public class BatterySaverButtonPreferenceController extends |
| TogglePreferenceController implements |
| LifecycleObserver, OnStart, OnStop, BatterySaverReceiver.BatterySaverListener { |
| |
| private final BatterySaverReceiver mBatterySaverReceiver; |
| private final PowerManager mPowerManager; |
| |
| private TwoStateButtonPreference mPreference; |
| |
| public BatterySaverButtonPreferenceController(Context context, String key) { |
| super(context, key); |
| mPowerManager = (PowerManager) context.getSystemService(Context.POWER_SERVICE); |
| mBatterySaverReceiver = new BatterySaverReceiver(context); |
| mBatterySaverReceiver.setBatterySaverListener(this); |
| } |
| |
| @Override |
| public int getAvailabilityStatus() { |
| return AVAILABLE; |
| } |
| |
| @Override |
| public boolean isSliceable() { |
| return true; |
| } |
| |
| @Override |
| public void onStart() { |
| mBatterySaverReceiver.setListening(true); |
| } |
| |
| @Override |
| public void onStop() { |
| mBatterySaverReceiver.setListening(false); |
| } |
| |
| @Override |
| public void displayPreference(PreferenceScreen screen) { |
| super.displayPreference(screen); |
| mPreference = screen.findPreference(getPreferenceKey()); |
| } |
| |
| @Override |
| public boolean isChecked() { |
| return mPowerManager.isPowerSaveMode(); |
| } |
| |
| @Override |
| public boolean setChecked(boolean stateOn) { |
| // This screen already shows a warning, so we don't need another warning. |
| return BatterySaverUtils.setPowerSaveMode(mContext, stateOn, |
| false /* needFirstTimeWarning */); |
| } |
| |
| @Override |
| public void updateState(Preference preference) { |
| super.updateState(preference); |
| if (mPreference != null) { |
| mPreference.setChecked(isChecked()); |
| } |
| } |
| |
| @Override |
| public void onPowerSaveModeChanged() { |
| final boolean isChecked = isChecked(); |
| if (mPreference != null && mPreference.isChecked() != isChecked) { |
| mPreference.setChecked(isChecked); |
| } |
| } |
| |
| @Override |
| public void onBatteryChanged(boolean pluggedIn) { |
| if (mPreference != null) { |
| mPreference.setButtonEnabled(!pluggedIn); |
| } |
| } |
| } |