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 package com.android.settings.fuelgauge.batterysaver; 17 18 import static com.android.settingslib.fuelgauge.BatterySaverUtils.KEY_PERCENTAGE; 19 20 import android.content.ContentResolver; 21 import android.content.Context; 22 import android.provider.Settings; 23 import android.provider.Settings.Global; 24 import android.widget.SeekBar; 25 import android.widget.SeekBar.OnSeekBarChangeListener; 26 27 import androidx.preference.Preference; 28 import androidx.preference.Preference.OnPreferenceChangeListener; 29 import androidx.preference.PreferenceScreen; 30 31 import com.android.internal.annotations.VisibleForTesting; 32 import com.android.settings.R; 33 import com.android.settings.Utils; 34 import com.android.settings.widget.SeekBarPreference; 35 import com.android.settingslib.fuelgauge.BatterySaverUtils; 36 37 /** 38 * Responds to user actions in the Settings > Battery > Set a Schedule Screen for the seekbar. Note 39 * that this seekbar is only visible when the radio button selected is "Percentage". 40 * 41 * <p>Note that this is not a preference controller since that screen does not inherit from 42 * DashboardFragment. 43 * 44 * <p>Will call the appropriate power manager APIs and modify the correct settings to enable users 45 * to control their automatic battery saver toggling preferences. See {@link 46 * Settings.Global#AUTOMATIC_POWER_SAVE_MODE} for more details. 47 */ 48 public class BatterySaverScheduleSeekBarController 49 implements OnPreferenceChangeListener, OnSeekBarChangeListener { 50 51 public static final int MAX_SEEKBAR_VALUE = 15; 52 public static final int MIN_SEEKBAR_VALUE = 2; 53 public static final String KEY_BATTERY_SAVER_SEEK_BAR = "battery_saver_seek_bar"; 54 private static final int LEVEL_UNIT_SCALE = 5; 55 56 @VisibleForTesting public SeekBarPreference mSeekBarPreference; 57 private Context mContext; 58 59 @VisibleForTesting int mPercentage; 60 BatterySaverScheduleSeekBarController(Context context)61 public BatterySaverScheduleSeekBarController(Context context) { 62 mContext = context; 63 mSeekBarPreference = new SeekBarPreference(context); 64 mSeekBarPreference.setLayoutResource(R.layout.preference_widget_seekbar_settings); 65 mSeekBarPreference.setIconSpaceReserved(false); 66 mSeekBarPreference.setOnPreferenceChangeListener(this); 67 mSeekBarPreference.setOnSeekBarChangeListener(this); 68 mSeekBarPreference.setContinuousUpdates(true); 69 mSeekBarPreference.setMax(MAX_SEEKBAR_VALUE); 70 mSeekBarPreference.setMin(MIN_SEEKBAR_VALUE); 71 mSeekBarPreference.setKey(KEY_BATTERY_SAVER_SEEK_BAR); 72 mSeekBarPreference.setHapticFeedbackMode(SeekBarPreference.HAPTIC_FEEDBACK_MODE_ON_TICKS); 73 updateSeekBar(); 74 } 75 76 @Override onPreferenceChange(Preference preference, Object newValue)77 public boolean onPreferenceChange(Preference preference, Object newValue) { 78 mPercentage = ((Integer) newValue) * LEVEL_UNIT_SCALE; 79 final CharSequence stateDescription = formatStateDescription(mPercentage); 80 preference.setTitle(stateDescription); 81 mSeekBarPreference.overrideSeekBarStateDescription(stateDescription); 82 return true; 83 } 84 85 @Override onProgressChanged(SeekBar seekBar, int progress, boolean fromUser)86 public void onProgressChanged(SeekBar seekBar, int progress, boolean fromUser) {} 87 88 @Override onStartTrackingTouch(SeekBar seekBar)89 public void onStartTrackingTouch(SeekBar seekBar) {} 90 91 @Override onStopTrackingTouch(SeekBar seekBar)92 public void onStopTrackingTouch(SeekBar seekBar) { 93 if (mPercentage > 0) { 94 Settings.Global.putInt( 95 mContext.getContentResolver(), 96 Global.LOW_POWER_MODE_TRIGGER_LEVEL, 97 mPercentage); 98 } 99 } 100 updateSeekBar()101 public void updateSeekBar() { 102 final ContentResolver resolver = mContext.getContentResolver(); 103 final String mode = BatterySaverUtils.getBatterySaverScheduleKey(mContext); 104 if (KEY_PERCENTAGE.equals(mode)) { 105 final int threshold = 106 Settings.Global.getInt(resolver, Global.LOW_POWER_MODE_TRIGGER_LEVEL, 0); 107 final int currentSeekbarValue = Math.max(threshold / 5, MIN_SEEKBAR_VALUE); 108 mSeekBarPreference.setVisible(true); 109 mSeekBarPreference.setProgress(currentSeekbarValue); 110 final CharSequence stateDescription = formatStateDescription(currentSeekbarValue * 5); 111 mSeekBarPreference.setTitle(stateDescription); 112 mSeekBarPreference.overrideSeekBarStateDescription(stateDescription); 113 } else { 114 mSeekBarPreference.setVisible(false); 115 } 116 } 117 118 /** 119 * Adds the seekbar to the end of the provided preference screen 120 * 121 * @param screen The preference screen to add the seekbar to 122 */ addToScreen(PreferenceScreen screen)123 public void addToScreen(PreferenceScreen screen) { 124 // makes sure it gets added after the preferences if called due to first time battery 125 // saver message 126 mSeekBarPreference.setOrder(100); 127 screen.addPreference(mSeekBarPreference); 128 } 129 formatStateDescription(int percentage)130 private CharSequence formatStateDescription(int percentage) { 131 return mContext.getString( 132 R.string.battery_saver_seekbar_title, Utils.formatPercentage(percentage)); 133 } 134 } 135