| /* |
| * 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.server.textservices; |
| |
| import android.annotation.NonNull; |
| import android.annotation.Nullable; |
| import android.annotation.UserIdInt; |
| import android.view.textservice.SpellCheckerInfo; |
| |
| import com.android.server.LocalServices; |
| |
| /** |
| * Local interface of {@link TextServicesManagerService} inside system server process. |
| */ |
| public abstract class TextServicesManagerInternal { |
| /** |
| * Returns the list of installed input methods for the specified user. |
| * |
| * <p>CAVEAT: This method is not fully implemented yet. This may return an empty list if |
| * {@code userId} for a background user is specified. Check the implementation before starting |
| * this method.</p> |
| * |
| * @param userId The user ID to be queried. |
| * @return {@link SpellCheckerInfo} that is currently selected {@code userId}. |
| */ |
| @Nullable |
| public abstract SpellCheckerInfo getCurrentSpellCheckerForUser(@UserIdInt int userId); |
| |
| /** |
| * Fake implementation of {@link TextServicesManagerInternal}. All the methods do nothing. |
| */ |
| private static final TextServicesManagerInternal NOP = |
| new TextServicesManagerInternal() { |
| @Override |
| public SpellCheckerInfo getCurrentSpellCheckerForUser(@UserIdInt int userId) { |
| return null; |
| } |
| }; |
| |
| /** |
| * @return Global instance if exists. Otherwise, a dummy no-op instance. |
| */ |
| @NonNull |
| public static TextServicesManagerInternal get() { |
| final TextServicesManagerInternal instance = |
| LocalServices.getService(TextServicesManagerInternal.class); |
| return instance != null ? instance : NOP; |
| } |
| } |