| /* |
| * 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.internal.inputmethod; |
| |
| import android.annotation.Nullable; |
| import android.text.TextUtils; |
| |
| import java.util.Locale; |
| |
| /** |
| * A utility class to handle {@link Locale} related logic for |
| * {@link android.view.inputmethod.InputMethodSubtype} and |
| * {@link android.view.textservice.SpellCheckerSubtype}. |
| */ |
| public class SubtypeLocaleUtils { |
| /** |
| * Maintains deprecated logic about how subtype locales specified in XML resources have been |
| * parsed. |
| * |
| * <p>This logic is kept basically for compatibility purpose. Consider relying on languageTag |
| * attribute instead.</p> |
| * |
| * @param localeStr string representation that is specified in the locale attribute |
| * @return {@link Locale} object parsed from {@code localeStr}. {@code null} for unexpected |
| * format |
| * |
| * @attr ref android.R.styleable#InputMethod_Subtype_imeSubtypeLocale |
| * @attr ref android.R.styleable#InputMethod_Subtype_languageTag |
| * @attr ref android.R.styleable#SpellChecker_Subtype_languageTag |
| * @attr ref android.R.styleable#SpellChecker_Subtype_subtypeLocale |
| */ |
| @Nullable |
| public static Locale constructLocaleFromString(String localeStr) { |
| if (TextUtils.isEmpty(localeStr)) { |
| return null; |
| } |
| // TODO: Use {@link Locale#toLanguageTag()} and {@link Locale#forLanguageTag(languageTag)}. |
| String[] localeParams = localeStr.split("_", 3); |
| if (localeParams.length >= 1 && "tl".equals(localeParams[0])) { |
| // Convert a locale whose language is "tl" to one whose language is "fil". |
| // For example, "tl_PH" will get converted to "fil_PH". |
| // Versions of Android earlier than Lollipop did not support three letter language |
| // codes, and used "tl" (Tagalog) as the language string for "fil" (Filipino). |
| // On Lollipop and above, the current three letter version must be used. |
| localeParams[0] = "fil"; |
| } |
| // The length of localeStr is guaranteed to always return a 1 <= value <= 3 |
| // because localeStr is not empty. |
| if (localeParams.length == 1) { |
| return new Locale(localeParams[0]); |
| } else if (localeParams.length == 2) { |
| return new Locale(localeParams[0], localeParams[1]); |
| } else if (localeParams.length == 3) { |
| return new Locale(localeParams[0], localeParams[1], localeParams[2]); |
| } |
| return null; |
| } |
| } |