1 /* 2 * Copyright (C) 2014 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.BroadcastReceiver; 20 import android.content.ContentResolver; 21 import android.content.Context; 22 import android.content.Intent; 23 import android.content.IntentFilter; 24 import android.content.res.Resources; 25 import android.database.ContentObserver; 26 import android.net.Uri; 27 import android.os.AsyncTask; 28 import android.os.BatteryManager; 29 import android.os.Bundle; 30 import android.os.Handler; 31 import android.os.PowerManager; 32 import android.provider.Settings.Global; 33 import android.util.Log; 34 import android.widget.Switch; 35 36 import com.android.internal.logging.MetricsProto.MetricsEvent; 37 import com.android.settings.R; 38 import com.android.settings.SettingsActivity; 39 import com.android.settings.SettingsPreferenceFragment; 40 import com.android.settings.Utils; 41 import com.android.settings.dashboard.conditional.BatterySaverCondition; 42 import com.android.settings.dashboard.conditional.ConditionManager; 43 import com.android.settings.notification.SettingPref; 44 import com.android.settings.widget.SwitchBar; 45 46 import static android.os.PowerManager.ACTION_POWER_SAVE_MODE_CHANGING; 47 48 public class BatterySaverSettings extends SettingsPreferenceFragment 49 implements SwitchBar.OnSwitchChangeListener { 50 private static final String TAG = "BatterySaverSettings"; 51 private static final boolean DEBUG = Log.isLoggable(TAG, Log.DEBUG); 52 private static final String KEY_TURN_ON_AUTOMATICALLY = "turn_on_automatically"; 53 private static final long WAIT_FOR_SWITCH_ANIM = 500; 54 55 private final Handler mHandler = new Handler(); 56 private final SettingsObserver mSettingsObserver = new SettingsObserver(mHandler); 57 private final Receiver mReceiver = new Receiver(); 58 59 private Context mContext; 60 private boolean mCreated; 61 private SettingPref mTriggerPref; 62 private SwitchBar mSwitchBar; 63 private Switch mSwitch; 64 private boolean mValidListener; 65 private PowerManager mPowerManager; 66 67 @Override 68 protected int getMetricsCategory() { 69 return MetricsEvent.FUELGAUGE_BATTERY_SAVER; 70 } 71 72 @Override 73 public void onActivityCreated(Bundle savedInstanceState) { 74 super.onActivityCreated(savedInstanceState); 75 if (mCreated) { 76 mSwitchBar.show(); 77 return; 78 } 79 mCreated = true; 80 addPreferencesFromResource(R.xml.battery_saver_settings); 81 82 mContext = getActivity(); 83 mSwitchBar = ((SettingsActivity) mContext).getSwitchBar(); 84 mSwitch = mSwitchBar.getSwitch(); 85 mSwitchBar.show(); 86 87 mTriggerPref = new SettingPref(SettingPref.TYPE_GLOBAL, KEY_TURN_ON_AUTOMATICALLY, 88 Global.LOW_POWER_MODE_TRIGGER_LEVEL, 89 0, /*default*/ 90 getResources().getIntArray(R.array.battery_saver_trigger_values)) { 91 @Override 92 protected String getCaption(Resources res, int value) { 93 if (value > 0 && value < 100) { 94 return res.getString(R.string.battery_saver_turn_on_automatically_pct, 95 Utils.formatPercentage(value)); 96 } 97 return res.getString(R.string.battery_saver_turn_on_automatically_never); 98 } 99 }; 100 mTriggerPref.init(this); 101 102 mPowerManager = (PowerManager) mContext.getSystemService(Context.POWER_SERVICE); 103 } 104 105 @Override 106 public void onDestroyView() { 107 super.onDestroyView(); 108 mSwitchBar.hide(); 109 } 110 111 @Override 112 public void onResume() { 113 super.onResume(); 114 mSettingsObserver.setListening(true); 115 mReceiver.setListening(true); 116 if (!mValidListener) { 117 mSwitchBar.addOnSwitchChangeListener(this); 118 mValidListener = true; 119 } 120 updateSwitch(); 121 } 122 123 @Override 124 public void onPause() { 125 super.onPause(); 126 mSettingsObserver.setListening(false); 127 mReceiver.setListening(false); 128 if (mValidListener) { 129 mSwitchBar.removeOnSwitchChangeListener(this); 130 mValidListener = false; 131 } 132 } 133 134 @Override 135 public void onSwitchChanged(Switch switchView, boolean isChecked) { 136 mHandler.removeCallbacks(mStartMode); 137 if (isChecked) { 138 mHandler.postDelayed(mStartMode, WAIT_FOR_SWITCH_ANIM); 139 } else { 140 if (DEBUG) Log.d(TAG, "Stopping low power mode from settings"); 141 trySetPowerSaveMode(false); 142 } 143 } 144 145 private void trySetPowerSaveMode(boolean mode) { 146 if (!mPowerManager.setPowerSaveMode(mode)) { 147 if (DEBUG) Log.d(TAG, "Setting mode failed, fallback to current value"); 148 mHandler.post(mUpdateSwitch); 149 } 150 // TODO: Remove once broadcast is in place. 151 ConditionManager.get(getContext()).getCondition(BatterySaverCondition.class).refreshState(); 152 } 153 154 private void updateSwitch() { 155 final boolean mode = mPowerManager.isPowerSaveMode(); 156 if (DEBUG) Log.d(TAG, "updateSwitch: isChecked=" + mSwitch.isChecked() + " mode=" + mode); 157 if (mode == mSwitch.isChecked()) return; 158 159 // set listener to null so that that code below doesn't trigger onCheckedChanged() 160 if (mValidListener) { 161 mSwitchBar.removeOnSwitchChangeListener(this); 162 } 163 mSwitch.setChecked(mode); 164 if (mValidListener) { 165 mSwitchBar.addOnSwitchChangeListener(this); 166 } 167 } 168 169 private final Runnable mUpdateSwitch = new Runnable() { 170 @Override 171 public void run() { 172 updateSwitch(); 173 } 174 }; 175 176 private final Runnable mStartMode = new Runnable() { 177 @Override 178 public void run() { 179 AsyncTask.execute(new Runnable() { 180 @Override 181 public void run() { 182 if (DEBUG) Log.d(TAG, "Starting low power mode from settings"); 183 trySetPowerSaveMode(true); 184 } 185 }); 186 } 187 }; 188 189 private final class Receiver extends BroadcastReceiver { 190 191 private boolean mRegistered; 192 193 @Override 194 public void onReceive(Context context, Intent intent) { 195 if (DEBUG) Log.d(TAG, "Received " + intent.getAction()); 196 String action = intent.getAction(); 197 if (action.equals(ACTION_POWER_SAVE_MODE_CHANGING)) { 198 mHandler.post(mUpdateSwitch); 199 } else if (action.equals(Intent.ACTION_BATTERY_CHANGED)) { 200 final int status = intent.getIntExtra(BatteryManager.EXTRA_STATUS, -1); 201 // disable BSM switch if phone is plugged in or at 100% while plugged in 202 mSwitchBar.setEnabled( 203 !(status == BatteryManager.BATTERY_STATUS_CHARGING 204 || status == BatteryManager.BATTERY_STATUS_FULL)); 205 } 206 } 207 public void setListening(boolean listening) { 208 if (listening && !mRegistered) { 209 final IntentFilter ifilter = new IntentFilter(); 210 ifilter.addAction(ACTION_POWER_SAVE_MODE_CHANGING); 211 ifilter.addAction(Intent.ACTION_BATTERY_CHANGED); 212 mContext.registerReceiver(this, ifilter); 213 mRegistered = true; 214 } else if (!listening && mRegistered) { 215 mContext.unregisterReceiver(this); 216 mRegistered = false; 217 } 218 } 219 220 } 221 222 private final class SettingsObserver extends ContentObserver { 223 private final Uri LOW_POWER_MODE_TRIGGER_LEVEL_URI 224 = Global.getUriFor(Global.LOW_POWER_MODE_TRIGGER_LEVEL); 225 226 public SettingsObserver(Handler handler) { 227 super(handler); 228 } 229 230 @Override 231 public void onChange(boolean selfChange, Uri uri) { 232 if (LOW_POWER_MODE_TRIGGER_LEVEL_URI.equals(uri)) { 233 mTriggerPref.update(mContext); 234 } 235 } 236 237 public void setListening(boolean listening) { 238 final ContentResolver cr = getContentResolver(); 239 if (listening) { 240 cr.registerContentObserver(LOW_POWER_MODE_TRIGGER_LEVEL_URI, false, this); 241 } else { 242 cr.unregisterContentObserver(this); 243 } 244 } 245 } 246 } 247
