| /* |
| * Copyright (C) 2023 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.app; |
| |
| import android.app.prediction.AppPredictor; |
| import android.app.prediction.AppTarget; |
| |
| import java.util.List; |
| import java.util.Objects; |
| import java.util.function.Consumer; |
| |
| /** |
| * Callback wrapper that works around potential memory leaks in app predictor. |
| * |
| * Nulls the callback itself when destroyed, so at worst you'll leak just this object. |
| */ |
| public class ResolverAppPredictorCallback { |
| private volatile Consumer<List<AppTarget>> mCallback; |
| |
| public ResolverAppPredictorCallback(Consumer<List<AppTarget>> callback) { |
| mCallback = callback; |
| } |
| |
| private void notifyCallback(List<AppTarget> list) { |
| Consumer<List<AppTarget>> callback = mCallback; |
| if (callback != null) { |
| callback.accept(Objects.requireNonNullElseGet(list, List::of)); |
| } |
| } |
| |
| public Consumer<List<AppTarget>> asConsumer() { |
| return this::notifyCallback; |
| } |
| |
| public AppPredictor.Callback asCallback() { |
| return this::notifyCallback; |
| } |
| |
| public void destroy() { |
| mCallback = null; |
| } |
| } |