/*
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* Copyright (C) 2015 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package com.android.camera.async;
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import com.android.camera.util.Callback;
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import java.util.concurrent.Executor;
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import javax.annotation.ParametersAreNonnullByDefault;
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import javax.annotation.concurrent.ThreadSafe;
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/**
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* Wraps a not-necessarily-thread-safe callback into a thread-safe callback
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* which runs it on an executor.
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*/
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@ThreadSafe
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@ParametersAreNonnullByDefault
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public class ExecutorCallback<T> implements Updatable<T> {
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private final Callback<T> mCallback;
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private final Executor mExecutor;
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/**
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* @param callback The callback to wrap.
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* @param executor The executor on which to invoke the callback.
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*/
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public ExecutorCallback(Callback<T> callback, Executor executor) {
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mCallback = callback;
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mExecutor = executor;
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}
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@Override
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public void update(final T t) {
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mExecutor.execute(new Runnable() {
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@Override
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public void run() {
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mCallback.onCallback(t);
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}
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});
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}
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}
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