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. 39 * Note that this seekbar is only visible when the radio button selected is "Percentage". 40 * 41 * Note that this is not a preference controller since that screen does not inherit from 42 * DashboardFragment. 43 * 44 * Will call the appropriate power manager APIs and modify the correct settings to enable 45 * users to control their automatic battery saver toggling preferences. 46 * See {@link Settings.Global#AUTOMATIC_POWER_SAVE_MODE} for more details. 47 */ 48 public class BatterySaverScheduleSeekBarController implements 49 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 57 public SeekBarPreference mSeekBarPreference; 58 private Context mContext; 59 60 @VisibleForTesting 61 int mPercentage; 62 BatterySaverScheduleSeekBarController(Context context)63 public BatterySaverScheduleSeekBarController(Context context) { 64 mContext = context; 65 mSeekBarPreference = new SeekBarPreference(context); 66 mSeekBarPreference.setLayoutResource(R.layout.preference_widget_seekbar_settings); 67 mSeekBarPreference.setIconSpaceReserved(false); 68 mSeekBarPreference.setOnPreferenceChangeListener(this); 69 mSeekBarPreference.setOnSeekBarChangeListener(this); 70 mSeekBarPreference.setContinuousUpdates(true); 71 mSeekBarPreference.setMax(MAX_SEEKBAR_VALUE); 72 mSeekBarPreference.setMin(MIN_SEEKBAR_VALUE); 73 mSeekBarPreference.setKey(KEY_BATTERY_SAVER_SEEK_BAR); 74 mSeekBarPreference.setHapticFeedbackMode(SeekBarPreference.HAPTIC_FEEDBACK_MODE_ON_TICKS); 75 updateSeekBar(); 76 } 77 78 @Override onPreferenceChange(Preference preference, Object newValue)79 public boolean onPreferenceChange(Preference preference, Object newValue) { 80 mPercentage = ((Integer) newValue) * LEVEL_UNIT_SCALE; 81 final CharSequence stateDescription = formatStateDescription(mPercentage); 82 preference.setTitle(stateDescription); 83 mSeekBarPreference.overrideSeekBarStateDescription(stateDescription); 84 return true; 85 } 86 87 @Override onProgressChanged(SeekBar seekBar, int progress, boolean fromUser)88 public void onProgressChanged(SeekBar seekBar, int progress, boolean fromUser) {} 89 90 @Override onStartTrackingTouch(SeekBar seekBar)91 public void onStartTrackingTouch(SeekBar seekBar) {} 92 93 @Override onStopTrackingTouch(SeekBar seekBar)94 public void onStopTrackingTouch(SeekBar seekBar) { 95 if (mPercentage > 0) { 96 Settings.Global.putInt(mContext.getContentResolver(), 97 Global.LOW_POWER_MODE_TRIGGER_LEVEL, 98 mPercentage); 99 } 100 } 101 updateSeekBar()102 public void updateSeekBar() { 103 final ContentResolver resolver = mContext.getContentResolver(); 104 final String mode = BatterySaverUtils.getBatterySaverScheduleKey(mContext); 105 if (KEY_PERCENTAGE.equals(mode)) { 106 final int threshold = 107 Settings.Global.getInt(resolver, Global.LOW_POWER_MODE_TRIGGER_LEVEL, 0); 108 final int currentSeekbarValue = Math.max(threshold / 5, MIN_SEEKBAR_VALUE); 109 mSeekBarPreference.setVisible(true); 110 mSeekBarPreference.setProgress(currentSeekbarValue); 111 final CharSequence stateDescription = formatStateDescription( 112 currentSeekbarValue * 5); 113 mSeekBarPreference.setTitle(stateDescription); 114 mSeekBarPreference.overrideSeekBarStateDescription(stateDescription); 115 } else { 116 mSeekBarPreference.setVisible(false); 117 } 118 } 119 120 /** 121 * Adds the seekbar to the end of the provided preference screen 122 * 123 * @param screen The preference screen to add the seekbar to 124 */ addToScreen(PreferenceScreen screen)125 public void addToScreen(PreferenceScreen screen) { 126 // makes sure it gets added after the preferences if called due to first time battery 127 // saver message 128 mSeekBarPreference.setOrder(100); 129 screen.addPreference(mSeekBarPreference); 130 } 131 formatStateDescription(int percentage)132 private CharSequence formatStateDescription(int percentage) { 133 return mContext.getString(R.string.battery_saver_seekbar_title, 134 Utils.formatPercentage(percentage)); 135 } 136 } 137