| /* |
| * Copyright (C) 2015 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.inputmethod; |
| |
| import android.annotation.NonNull; |
| import android.annotation.UserIdInt; |
| import android.content.ComponentName; |
| import android.view.inputmethod.InputMethodInfo; |
| |
| import com.android.server.LocalServices; |
| |
| import java.util.Collections; |
| import java.util.List; |
| |
| /** |
| * Input method manager local system service interface. |
| */ |
| public abstract class InputMethodManagerInternal { |
| /** |
| * Called by the power manager to tell the input method manager whether it |
| * should start watching for wake events. |
| */ |
| public abstract void setInteractive(boolean interactive); |
| |
| /** |
| * Hides the current input method, if visible. |
| */ |
| public abstract void hideCurrentInputMethod(); |
| |
| /** |
| * Switches to VR InputMethod defined in the packageName of {@param componentName}. |
| */ |
| public abstract void startVrInputMethodNoCheck(ComponentName componentName); |
| |
| /** |
| * Returns the list of installed input methods for the specified user. |
| * |
| * @param userId The user ID to be queried. |
| * @return A list of {@link InputMethodInfo}. VR-only IMEs are already excluded. |
| */ |
| public abstract List<InputMethodInfo> getInputMethodListAsUser(@UserIdInt int userId); |
| |
| /** |
| * Returns the list of installed input methods that are enabled for the specified user. |
| * |
| * @param userId The user ID to be queried. |
| * @return A list of {@link InputMethodInfo} that are enabled for {@code userId}. |
| */ |
| public abstract List<InputMethodInfo> getEnabledInputMethodListAsUser(@UserIdInt int userId); |
| |
| /** |
| * Fake implementation of {@link InputMethodManagerInternal}. All the methods do nothing. |
| */ |
| private static final InputMethodManagerInternal NOP = |
| new InputMethodManagerInternal() { |
| @Override |
| public void setInteractive(boolean interactive) { |
| } |
| |
| @Override |
| public void hideCurrentInputMethod() { |
| } |
| |
| @Override |
| public void startVrInputMethodNoCheck(ComponentName componentName) { |
| } |
| |
| @Override |
| public List<InputMethodInfo> getInputMethodListAsUser(int userId) { |
| return Collections.emptyList(); |
| } |
| |
| @Override |
| public List<InputMethodInfo> getEnabledInputMethodListAsUser(int userId) { |
| return Collections.emptyList(); |
| } |
| }; |
| |
| /** |
| * @return Global instance if exists. Otherwise, a dummy no-op instance. |
| */ |
| @NonNull |
| public static InputMethodManagerInternal get() { |
| final InputMethodManagerInternal instance = |
| LocalServices.getService(InputMethodManagerInternal.class); |
| return instance != null ? instance : NOP; |
| } |
| } |