1 /* 2 * Copyright (C) 2019 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 android.content.Context; 20 21 import androidx.preference.Preference; 22 import androidx.preference.PreferenceScreen; 23 24 import com.android.internal.view.RotationPolicy; 25 import com.android.internal.view.RotationPolicy.RotationPolicyListener; 26 import com.android.settings.R; 27 import com.android.settings.core.TogglePreferenceController; 28 import com.android.settings.display.DeviceStateAutoRotationHelper; 29 import com.android.settingslib.core.lifecycle.LifecycleObserver; 30 import com.android.settingslib.core.lifecycle.events.OnStart; 31 import com.android.settingslib.core.lifecycle.events.OnStop; 32 33 public class LockScreenRotationPreferenceController extends TogglePreferenceController implements 34 LifecycleObserver, OnStart, OnStop { 35 36 private Preference mPreference; 37 private RotationPolicyListener mRotationPolicyListener; 38 LockScreenRotationPreferenceController(Context context, String preferenceKey)39 public LockScreenRotationPreferenceController(Context context, String preferenceKey) { 40 super(context, preferenceKey); 41 } 42 43 /** 44 * Returns true if rotation lock is enabled. 45 */ 46 @Override isChecked()47 public boolean isChecked() { 48 return !RotationPolicy.isRotationLocked(mContext); 49 } 50 51 /** 52 * Enables or disables screen rotation lock from Accessibility settings. If rotation is locked 53 * for accessibility, the toggle in Display settings is hidden to avoid confusion. 54 */ 55 @Override setChecked(boolean isChecked)56 public boolean setChecked(boolean isChecked) { 57 RotationPolicy.setRotationLockForAccessibility(mContext, !isChecked); 58 return true; 59 } 60 61 @Override getAvailabilityStatus()62 public int getAvailabilityStatus() { 63 return RotationPolicy.isRotationSupported(mContext) 64 && !DeviceStateAutoRotationHelper.isDeviceStateRotationEnabledForA11y(mContext) 65 ? AVAILABLE : UNSUPPORTED_ON_DEVICE; 66 } 67 68 @Override getSliceHighlightMenuRes()69 public int getSliceHighlightMenuRes() { 70 return R.string.menu_key_accessibility; 71 } 72 73 @Override onStop()74 public void onStop() { 75 if (mRotationPolicyListener != null) { 76 RotationPolicy.unregisterRotationPolicyListener(mContext, mRotationPolicyListener); 77 } 78 } 79 80 @Override onStart()81 public void onStart() { 82 if (mRotationPolicyListener == null) { 83 mRotationPolicyListener = new RotationPolicyListener() { 84 @Override 85 public void onChange() { 86 if (mPreference != null) { 87 updateState(mPreference); 88 } 89 } 90 }; 91 } 92 RotationPolicy.registerRotationPolicyListener(mContext, mRotationPolicyListener); 93 } 94 95 @Override displayPreference(PreferenceScreen screen)96 public void displayPreference(PreferenceScreen screen) { 97 mPreference = screen.findPreference(getPreferenceKey()); 98 super.displayPreference(screen); 99 } 100 } 101