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.SystemProperties; 21 import android.provider.Settings; 22 import android.support.annotation.VisibleForTesting; 23 import android.support.v14.preference.SwitchPreference; 24 import android.support.v7.preference.Preference; 25 26 import com.android.internal.app.LocalePicker; 27 import com.android.settings.core.PreferenceControllerMixin; 28 import com.android.settingslib.development.DeveloperOptionsPreferenceController; 29 30 public class RtlLayoutPreferenceController extends DeveloperOptionsPreferenceController implements 31 Preference.OnPreferenceChangeListener, PreferenceControllerMixin { 32 33 private static final String FORCE_RTL_LAYOUT_KEY = "force_rtl_layout_all_locales"; 34 35 @VisibleForTesting 36 static final int SETTING_VALUE_ON = 1; 37 @VisibleForTesting 38 static final int SETTING_VALUE_OFF = 0; 39 RtlLayoutPreferenceController(Context context)40 public RtlLayoutPreferenceController(Context context) { 41 super(context); 42 } 43 44 @Override getPreferenceKey()45 public String getPreferenceKey() { 46 return FORCE_RTL_LAYOUT_KEY; 47 } 48 49 @Override onPreferenceChange(Preference preference, Object newValue)50 public boolean onPreferenceChange(Preference preference, Object newValue) { 51 final boolean isEnabled = (Boolean) newValue; 52 writeToForceRtlLayoutSetting(isEnabled); 53 updateLocales(); 54 return true; 55 } 56 57 @Override updateState(Preference preference)58 public void updateState(Preference preference) { 59 int rtlLayoutMode = Settings.Global.getInt(mContext.getContentResolver(), 60 Settings.Global.DEVELOPMENT_FORCE_RTL, SETTING_VALUE_OFF); 61 ((SwitchPreference) mPreference).setChecked(rtlLayoutMode != SETTING_VALUE_OFF); 62 } 63 64 @Override onDeveloperOptionsSwitchDisabled()65 protected void onDeveloperOptionsSwitchDisabled() { 66 super.onDeveloperOptionsSwitchDisabled(); 67 writeToForceRtlLayoutSetting(false); 68 updateLocales(); 69 ((SwitchPreference) mPreference).setChecked(false); 70 } 71 72 @VisibleForTesting updateLocales()73 void updateLocales() { 74 LocalePicker.updateLocales(mContext.getResources().getConfiguration().getLocales()); 75 } 76 writeToForceRtlLayoutSetting(boolean isEnabled)77 private void writeToForceRtlLayoutSetting(boolean isEnabled) { 78 Settings.Global.putInt(mContext.getContentResolver(), 79 Settings.Global.DEVELOPMENT_FORCE_RTL, 80 isEnabled ? SETTING_VALUE_ON : SETTING_VALUE_OFF); 81 SystemProperties.set(Settings.Global.DEVELOPMENT_FORCE_RTL, 82 isEnabled ? Integer.toString(SETTING_VALUE_ON) 83 : Integer.toString(SETTING_VALUE_OFF)); 84 } 85 } 86