| /* |
| * Copyright (C) 2018 The Android Open Source Project |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| |
| package com.android.car.settings.language; |
| |
| import android.car.drivingstate.CarUxRestrictions; |
| import android.content.Context; |
| |
| import androidx.preference.Preference; |
| import androidx.preference.PreferenceGroup; |
| |
| import com.android.car.settings.common.FragmentController; |
| import com.android.car.settings.common.PreferenceController; |
| import com.android.internal.app.LocalePicker; |
| import com.android.internal.app.LocaleStore; |
| |
| import java.util.HashSet; |
| import java.util.Set; |
| |
| /** |
| * Common business logic shared between the primary and secondary screens for language selection. |
| */ |
| public abstract class LanguageBasePreferenceController extends |
| PreferenceController<PreferenceGroup> implements Preference.OnPreferenceClickListener { |
| |
| /** Actions that should be taken on selection of the preference. */ |
| public interface LocaleSelectedListener { |
| /** Handle selection of locale. */ |
| void onLocaleSelected(LocaleStore.LocaleInfo localeInfo); |
| } |
| |
| private Set<String> mExclusionSet = new HashSet<>(); |
| private LocaleSelectedListener mLocaleSelectedListener; |
| |
| public LanguageBasePreferenceController(Context context, String preferenceKey, |
| FragmentController fragmentController, CarUxRestrictions uxRestrictions) { |
| super(context, preferenceKey, fragmentController, uxRestrictions); |
| } |
| |
| @Override |
| protected Class<PreferenceGroup> getPreferenceType() { |
| return PreferenceGroup.class; |
| } |
| |
| /** Register a listener for when a locale is selected. */ |
| public void setLocaleSelectedListener(LocaleSelectedListener listener) { |
| mLocaleSelectedListener = listener; |
| } |
| |
| /** Gets the exclusion set. */ |
| public Set<String> getExclusionSet() { |
| return mExclusionSet; |
| } |
| |
| /** Defines the locale provider that should be used by the given preference controller. */ |
| protected abstract LocalePreferenceProvider defineLocaleProvider(); |
| |
| @Override |
| protected void updateState(PreferenceGroup preferenceGroup) { |
| // Only populate if the preference group is empty. |
| if (preferenceGroup.getPreferenceCount() == 0) { |
| defineLocaleProvider().populateBasePreference(preferenceGroup, getExclusionSet(), this); |
| } |
| } |
| |
| /** |
| * Defines the action that should be taken when a locale with children is clicked. By default, |
| * does nothing. |
| */ |
| protected void handleLocaleWithChildren(LocaleStore.LocaleInfo parentLocaleInfo) { |
| } |
| |
| @Override |
| public boolean onPreferenceClick(Preference preference) { |
| LocaleStore.LocaleInfo localeInfo = LocaleUtil.getLocaleArgument(preference); |
| |
| // Preferences without a associated locale should not be acted on. |
| if (localeInfo == null) { |
| return false; |
| } |
| |
| if (localeInfo.getParent() == null) { |
| // The locale only has the language info. Need to look up the sub-level |
| // locale to get the country/region info as well. |
| Set<LocaleStore.LocaleInfo> subLocales = LocaleStore.getLevelLocales( |
| getContext(), |
| getExclusionSet(), |
| /* parent= */ localeInfo, |
| /* translatedOnly= */ true); |
| |
| if (subLocales.size() > 1) { |
| handleLocaleWithChildren(localeInfo); |
| return true; |
| } |
| |
| if (subLocales.size() < 1) { |
| return false; |
| } |
| |
| // If only 1 sublocale, just operate as if there are no sublocales. |
| localeInfo = subLocales.iterator().next(); |
| } |
| |
| LocalePicker.updateLocale(localeInfo.getLocale()); |
| if (mLocaleSelectedListener != null) { |
| mLocaleSelectedListener.onLocaleSelected(localeInfo); |
| } |
| getFragmentController().goBack(); |
| return true; |
| } |
| } |