1 /* 2 * Copyright (C) 2017 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.development; 18 19 import android.content.Context; 20 import android.os.RemoteException; 21 import android.os.ServiceManager; 22 import android.os.StrictMode; 23 import android.os.SystemProperties; 24 import android.view.IWindowManager; 25 26 import androidx.annotation.VisibleForTesting; 27 import androidx.preference.Preference; 28 import androidx.preference.SwitchPreference; 29 30 import com.android.settings.core.PreferenceControllerMixin; 31 import com.android.settingslib.development.DeveloperOptionsPreferenceController; 32 33 public class StrictModePreferenceController extends DeveloperOptionsPreferenceController implements 34 Preference.OnPreferenceChangeListener, PreferenceControllerMixin { 35 36 private static final String STRICT_MODE_KEY = "strict_mode"; 37 private static final String WINDOW_MANAGER_KEY = "window"; 38 39 @VisibleForTesting 40 static final String STRICT_MODE_ENABLED = "1"; 41 @VisibleForTesting 42 static final String STRICT_MODE_DISABLED = ""; 43 44 private final IWindowManager mWindowManager; 45 StrictModePreferenceController(Context context)46 public StrictModePreferenceController(Context context) { 47 super(context); 48 49 mWindowManager = IWindowManager.Stub.asInterface( 50 ServiceManager.getService(WINDOW_MANAGER_KEY)); 51 } 52 53 @Override getPreferenceKey()54 public String getPreferenceKey() { 55 return STRICT_MODE_KEY; 56 } 57 58 @Override onPreferenceChange(Preference preference, Object newValue)59 public boolean onPreferenceChange(Preference preference, Object newValue) { 60 final boolean isEnabled = (Boolean) newValue; 61 writeStrictModeVisualOptions(isEnabled); 62 return true; 63 } 64 65 @Override updateState(Preference preference)66 public void updateState(Preference preference) { 67 ((SwitchPreference) mPreference).setChecked(isStrictModeEnabled()); 68 } 69 70 @Override onDeveloperOptionsSwitchDisabled()71 protected void onDeveloperOptionsSwitchDisabled() { 72 super.onDeveloperOptionsSwitchDisabled(); 73 writeStrictModeVisualOptions(false); 74 ((SwitchPreference) mPreference).setChecked(false); 75 } 76 isStrictModeEnabled()77 private boolean isStrictModeEnabled() { 78 return SystemProperties.getBoolean(StrictMode.VISUAL_PROPERTY, false /* default */); 79 } 80 writeStrictModeVisualOptions(boolean isEnabled)81 private void writeStrictModeVisualOptions(boolean isEnabled) { 82 try { 83 mWindowManager.setStrictModeVisualIndicatorPreference( 84 isEnabled ? STRICT_MODE_ENABLED : STRICT_MODE_DISABLED); 85 } catch (RemoteException e) { 86 // intentional no-op 87 } 88 } 89 } 90