1 /* 2 * Copyright (C) 2022 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.accessibility; 18 19 import static com.android.settings.accessibility.AccessibilityUtil.State.OFF; 20 import static com.android.settings.accessibility.AccessibilityUtil.State.ON; 21 22 import android.content.Context; 23 import android.database.ContentObserver; 24 import android.net.Uri; 25 import android.os.Handler; 26 import android.os.Looper; 27 import android.os.VibrationAttributes; 28 import android.os.Vibrator; 29 import android.provider.Settings; 30 31 import androidx.annotation.NonNull; 32 import androidx.annotation.Nullable; 33 import androidx.preference.Preference; 34 import androidx.preference.PreferenceScreen; 35 36 import com.android.settings.R; 37 import com.android.settings.core.TogglePreferenceController; 38 import com.android.settingslib.core.lifecycle.LifecycleObserver; 39 import com.android.settingslib.core.lifecycle.events.OnStart; 40 import com.android.settingslib.core.lifecycle.events.OnStop; 41 42 /** 43 * Preference controller for the main switch setting for vibration and haptics screen. 44 * 45 * <p>This preference is controlled by the setting key{@link Settings.System#VIBRATE_ON}, and it 46 * will disable the entire settings screen once the settings is turned OFF. All device haptics will 47 * be disabled by this setting, except the flagged alerts and accessibility touch feedback. 48 */ 49 // LINT.IfChange 50 public class VibrationMainSwitchPreferenceController extends TogglePreferenceController 51 implements LifecycleObserver, OnStart, OnStop { 52 53 private final ContentObserver mSettingObserver; 54 private final Vibrator mVibrator; 55 private @Nullable Preference mPreference; 56 VibrationMainSwitchPreferenceController(Context context, String preferenceKey)57 public VibrationMainSwitchPreferenceController(Context context, String preferenceKey) { 58 super(context, preferenceKey); 59 mVibrator = context.getSystemService(Vibrator.class); 60 Handler handler = Looper.myLooper() != null ? new Handler(/* async= */ true) : null; 61 mSettingObserver = new ContentObserver(handler) { 62 @Override 63 public void onChange(boolean selfChange, Uri uri) { 64 if (mPreference != null) { 65 updateState(mPreference); 66 } 67 } 68 }; 69 } 70 71 @Override getAvailabilityStatus()72 public int getAvailabilityStatus() { 73 return AVAILABLE; 74 } 75 76 @Override displayPreference(@onNull PreferenceScreen screen)77 public void displayPreference(@NonNull PreferenceScreen screen) { 78 super.displayPreference(screen); 79 mPreference = screen.findPreference(getPreferenceKey()); 80 } 81 82 @Override onStart()83 public void onStart() { 84 mContext.getContentResolver().registerContentObserver( 85 Settings.System.getUriFor(VibrationPreferenceConfig.MAIN_SWITCH_SETTING_KEY), 86 /* notifyForDescendants= */ false, 87 mSettingObserver); 88 } 89 90 @Override onStop()91 public void onStop() { 92 mContext.getContentResolver().unregisterContentObserver(mSettingObserver); 93 } 94 95 @Override isChecked()96 public boolean isChecked() { 97 return VibrationPreferenceConfig.isMainVibrationSwitchEnabled( 98 mContext.getContentResolver()); 99 } 100 101 @Override setChecked(boolean isChecked)102 public boolean setChecked(boolean isChecked) { 103 // The main switch change can be triggered by both the user click and the 104 // SettingsMainSwitchPreferenceController state change. Make sure we only do it once. 105 boolean wasChecked = isChecked(); 106 boolean success = Settings.System.putInt(mContext.getContentResolver(), 107 VibrationPreferenceConfig.MAIN_SWITCH_SETTING_KEY, 108 isChecked ? ON : OFF); 109 110 if (success && !wasChecked && isChecked) { 111 // Play a haptic as preview for the main toggle only when touch feedback is enabled. 112 VibrationPreferenceConfig.playVibrationPreview( 113 mVibrator, VibrationAttributes.USAGE_TOUCH); 114 } 115 116 return success; 117 } 118 119 @Override getSliceHighlightMenuRes()120 public int getSliceHighlightMenuRes() { 121 return R.string.menu_key_accessibility; 122 } 123 } 124 // LINT.ThenChange(VibrationMainSwitchPreference.kt) 125