| /* |
| * Copyright (C) 2017 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.dialer.smartdial.map; |
| |
| import android.content.Context; |
| import android.support.annotation.VisibleForTesting; |
| import android.support.v4.util.SimpleArrayMap; |
| import com.android.dialer.compat.CompatUtils; |
| import com.google.common.base.Optional; |
| |
| /** |
| * A utility class that combines the functionality of two implementations of {@link SmartDialMap} so |
| * that we support smart dial for dual alphabets. |
| * |
| * <p>Of the two implementations of {@link SmartDialMap}, the default one always takes precedence. |
| * The second one is consulted only when the default one is unable to provide a valid result. |
| * |
| * <p>Note that the second implementation can be absent if it is not defined for the system's 1st |
| * language preference. |
| */ |
| @SuppressWarnings("Guava") |
| public class CompositeSmartDialMap { |
| |
| private static final SmartDialMap DEFAULT_MAP = LatinSmartDialMap.getInstance(); |
| |
| // A map in which each key is an ISO 639-2 language code and the corresponding value is a |
| // SmartDialMap |
| private static final SimpleArrayMap<String, SmartDialMap> EXTRA_MAPS = new SimpleArrayMap<>(); |
| |
| static { |
| EXTRA_MAPS.put("bul", BulgarianSmartDialMap.getInstance()); |
| EXTRA_MAPS.put("rus", RussianSmartDialMap.getInstance()); |
| EXTRA_MAPS.put("ukr", UkrainianSmartDialMap.getInstance()); |
| } |
| |
| private CompositeSmartDialMap() {} |
| |
| /** |
| * Returns true if the provided character can be mapped to a key on the dialpad. |
| * |
| * <p>The provided character is expected to be a normalized character. See {@link |
| * SmartDialMap#normalizeCharacter(char)} for details. |
| */ |
| public static boolean isValidDialpadCharacter(Context context, char ch) { |
| if (DEFAULT_MAP.isValidDialpadCharacter(ch)) { |
| return true; |
| } |
| |
| Optional<SmartDialMap> extraMap = getExtraMap(context); |
| return extraMap.isPresent() && extraMap.get().isValidDialpadCharacter(ch); |
| } |
| |
| /** |
| * Returns true if the provided character is a letter, and can be mapped to a key on the dialpad. |
| * |
| * <p>The provided character is expected to be a normalized character. See {@link |
| * SmartDialMap#normalizeCharacter(char)} for details. |
| */ |
| public static boolean isValidDialpadAlphabeticChar(Context context, char ch) { |
| if (DEFAULT_MAP.isValidDialpadAlphabeticChar(ch)) { |
| return true; |
| } |
| |
| Optional<SmartDialMap> extraMap = getExtraMap(context); |
| return extraMap.isPresent() && extraMap.get().isValidDialpadAlphabeticChar(ch); |
| } |
| |
| /** |
| * Returns true if the provided character is a digit, and can be mapped to a key on the dialpad. |
| */ |
| public static boolean isValidDialpadNumericChar(Context context, char ch) { |
| if (DEFAULT_MAP.isValidDialpadNumericChar(ch)) { |
| return true; |
| } |
| |
| Optional<SmartDialMap> extraMap = getExtraMap(context); |
| return extraMap.isPresent() && extraMap.get().isValidDialpadNumericChar(ch); |
| } |
| |
| /** |
| * Get the index of the key on the dialpad which the character corresponds to. |
| * |
| * <p>The provided character is expected to be a normalized character. See {@link |
| * SmartDialMap#normalizeCharacter(char)} for details. |
| * |
| * <p>If the provided character can't be mapped to a key on the dialpad, return -1. |
| */ |
| public static byte getDialpadIndex(Context context, char ch) { |
| Optional<Byte> dialpadIndex = DEFAULT_MAP.getDialpadIndex(ch); |
| if (dialpadIndex.isPresent()) { |
| return dialpadIndex.get(); |
| } |
| |
| Optional<SmartDialMap> extraMap = getExtraMap(context); |
| if (extraMap.isPresent()) { |
| dialpadIndex = extraMap.get().getDialpadIndex(ch); |
| } |
| |
| return dialpadIndex.isPresent() ? dialpadIndex.get() : -1; |
| } |
| |
| /** |
| * Get the actual numeric character on the dialpad which the character corresponds to. |
| * |
| * <p>The provided character is expected to be a normalized character. See {@link |
| * SmartDialMap#normalizeCharacter(char)} for details. |
| * |
| * <p>If the provided character can't be mapped to a key on the dialpad, return the character. |
| */ |
| public static char getDialpadNumericCharacter(Context context, char ch) { |
| Optional<Character> dialpadNumericChar = DEFAULT_MAP.getDialpadNumericCharacter(ch); |
| if (dialpadNumericChar.isPresent()) { |
| return dialpadNumericChar.get(); |
| } |
| |
| Optional<SmartDialMap> extraMap = getExtraMap(context); |
| if (extraMap.isPresent()) { |
| dialpadNumericChar = extraMap.get().getDialpadNumericCharacter(ch); |
| } |
| |
| return dialpadNumericChar.isPresent() ? dialpadNumericChar.get() : ch; |
| } |
| |
| /** |
| * Converts uppercase characters to lower case ones, and on a best effort basis, strips accents |
| * from accented characters. |
| * |
| * <p>If the provided character can't be mapped to a key on the dialpad, return the character. |
| */ |
| public static char normalizeCharacter(Context context, char ch) { |
| Optional<Character> normalizedChar = DEFAULT_MAP.normalizeCharacter(ch); |
| if (normalizedChar.isPresent()) { |
| return normalizedChar.get(); |
| } |
| |
| Optional<SmartDialMap> extraMap = getExtraMap(context); |
| if (extraMap.isPresent()) { |
| normalizedChar = extraMap.get().normalizeCharacter(ch); |
| } |
| |
| return normalizedChar.isPresent() ? normalizedChar.get() : ch; |
| } |
| |
| @VisibleForTesting |
| static Optional<SmartDialMap> getExtraMap(Context context) { |
| String languageCode = CompatUtils.getLocale(context).getISO3Language(); |
| return EXTRA_MAPS.containsKey(languageCode) |
| ? Optional.of(EXTRA_MAPS.get(languageCode)) |
| : Optional.absent(); |
| } |
| } |