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/*
* Copyright (C) 2022 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.tv.settings.system.locale;
import static com.android.tv.settings.system.locale.LocaleDataViewModel.TRANSLATED_ONLY;
import android.app.ActivityManager;
import android.app.tvsettings.TvSettingsEnums;
import android.content.Context;
import android.os.Build;
import android.os.Bundle;
import android.os.Handler;
import android.os.LocaleList;
import android.os.Looper;
import android.util.Log;
import androidx.annotation.Keep;
import androidx.lifecycle.ViewModelProvider;
import androidx.preference.Preference;
import androidx.preference.PreferenceScreen;
import com.android.internal.app.LocaleHelper;
import com.android.internal.app.LocaleStore;
import com.android.tv.settings.R;
import com.android.tv.settings.RadioPreference;
import com.android.tv.settings.SettingsPreferenceFragment;
import java.util.ArrayList;
import java.util.HashSet;
import java.util.Locale;
import java.util.Set;
import java.util.stream.Collectors;
/** Language picker settings screen for locale selection. */
@Keep
public class LanguagePickerFragment extends SettingsPreferenceFragment {
private static final String TAG = "LanguagePickerFragment";
private static final String LANGUAGE_PICKER_RADIO_GROUP = "language_picker_group";
private ArrayList<LocaleStore.LocaleInfo> mLocaleInfos;
private LocaleDataViewModel mLocaleDataViewModel;
private static final boolean DEBUG = Build.isDebuggable();
static final String KEY_LOCALE_INFO = "locale_info";
private Handler mHandler = new Handler(Looper.getMainLooper());
public static LanguagePickerFragment newInstance() {
return new LanguagePickerFragment();
}
@Override
public void onCreatePreferences(Bundle savedInstanceState, String rootKey) {
mLocaleDataViewModel = new ViewModelProvider(getActivity()).get(LocaleDataViewModel.class);
final Context themedContext = getPreferenceManager().getContext();
final PreferenceScreen screen =
getPreferenceManager().createPreferenceScreen(themedContext);
screen.setTitle(R.string.system_language);
Locale currentLocale = LocaleDataViewModel.getCurrentLocale();
final Set<String> langTagsToIgnore = new HashSet<>();
mLocaleInfos = new ArrayList<>(LocaleStore.getLevelLocales(
getContext(), langTagsToIgnore, null, TRANSLATED_ONLY));
final Locale sortingLocale = Locale.getDefault();
final LocaleHelper.LocaleInfoComparator comp =
new LocaleHelper.LocaleInfoComparator(sortingLocale, false);
mLocaleInfos.sort(comp);
final Set<LocaleStore.LocaleInfo> notSuggestedLocales =
mLocaleInfos.stream().filter(
localeInfo -> !localeInfo.isSuggested()).collect(Collectors.toSet());
for (LocaleStore.LocaleInfo localeInfo : mLocaleInfos) {
mLocaleDataViewModel.addLocaleInfoList(localeInfo, getActivity(), langTagsToIgnore);
if (localeInfo.isSuggested()
&& containsSuggestedLocale(notSuggestedLocales, localeInfo)) {
continue;
}
ArrayList<LocaleStore.LocaleInfo> localeInfoWithCountryList = mLocaleDataViewModel
.getLocaleInfoList(localeInfo);
if (localeInfoWithCountryList != null && localeInfoWithCountryList.size() <= 1) {
RadioPreference preference = new RadioPreference(getContext());
preference.setTitle(localeInfo.getFullNameNative());
if (localeInfo.getLocale().equals(currentLocale)) {
preference.setChecked(true);
} else {
preference.setChecked(false);
}
preference.setRadioGroup(LANGUAGE_PICKER_RADIO_GROUP);
preference.getExtras().putSerializable(KEY_LOCALE_INFO, localeInfo);
screen.addPreference(preference);
} else {
Preference preference = new Preference(getContext());
preference.setFragment(CountryPickerFragment.class.getSimpleName());
preference.setTitle(localeInfo.getFullNameNative());
preference.getExtras().putAll(CountryPickerFragment.prepareArgs(localeInfo));
preference.setFragment(CountryPickerFragment.class.getName());
screen.addPreference(preference);
preference.getExtras().putSerializable(KEY_LOCALE_INFO, localeInfo);
}
}
setPreferenceScreen(screen);
}
private static boolean containsSuggestedLocale(Set<LocaleStore.LocaleInfo> localeInfos,
LocaleStore.LocaleInfo suggestedLocaleInfo) {
return localeInfos.stream().anyMatch(localeInfo -> localeInfo.getLocale().getLanguage()
.equals(suggestedLocaleInfo.getLocale().getLanguage())
&& localeInfo.getLocale().getScript().equals(
suggestedLocaleInfo.getLocale().getScript()));
}
@Override
public void onResume() {
super.onResume();
Locale currentLocale = LocaleDataViewModel.getCurrentLocale();
for (int i = 0; i < getPreferenceScreen().getPreferenceCount(); i++) {
Preference pref = getPreferenceScreen().getPreference(i);
LocaleStore.LocaleInfo localeInfo = (LocaleStore.LocaleInfo)
pref.getExtras().getSerializable(KEY_LOCALE_INFO);
if (localeInfo.getLocale() != null
&& localeInfo.getLocale().getLanguage().equals(
currentLocale.getLanguage())) {
if (DEBUG) {
Log.d(TAG, "Scroll to active locale: " + localeInfo.getLocale());
}
mHandler.post(() -> scrollToPreference(pref));
}
}
}
@Override
public boolean onPreferenceTreeClick(Preference preference) {
if (DEBUG) {
Log.d(TAG, "Preference clicked: " + preference.getTitle());
}
if (preference instanceof RadioPreference) {
RadioPreference localePref = (RadioPreference) preference;
if (!localePref.isChecked()) {
localePref.setChecked(true);
return true;
}
LocaleStore.LocaleInfo localeInfo = localePref.getExtras()
.getSerializable(KEY_LOCALE_INFO, LocaleStore.LocaleInfo.class);
if (localeInfo != null) {
getContext().getSystemService(ActivityManager.class)
.setDeviceLocales(new LocaleList(localeInfo.getLocale()));
}
localePref.clearOtherRadioPreferences(getPreferenceScreen());
return true;
}
return super.onPreferenceTreeClick(preference);
}
@Override
protected int getPageId() {
return TvSettingsEnums.SYSTEM_LANGUAGE;
}
}
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