/* * 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); } } }