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/*
* Copyright (C) 2019 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.systemui.util.concurrency;
import android.content.Context;
import android.os.Handler;
import android.os.Looper;
import com.android.systemui.dagger.qualifiers.Main;
import java.util.Optional;
import java.util.concurrent.Executor;
import javax.inject.Named;
import javax.inject.Singleton;
import dagger.Binds;
import dagger.Module;
import dagger.Provides;
/**
* Dagger Module for classes found within the concurrent package.
*/
@Module
public abstract class GlobalConcurrencyModule {
public static final String PRE_HANDLER = "pre_handler";
/**
* Binds {@link ThreadFactoryImpl} to {@link ThreadFactory}.
*/
@Binds
public abstract ThreadFactory bindExecutorFactory(ThreadFactoryImpl impl);
/** Main Looper */
@Provides
@Main
public static Looper provideMainLooper() {
return Looper.getMainLooper();
}
/**
* Main Handler.
*
* Prefer the Main Executor when possible.
*/
@Provides
@Main
public static Handler provideMainHandler(@Main Looper mainLooper) {
return new Handler(mainLooper);
}
/**
* Provide a Main-Thread Executor.
*/
@Provides
@Singleton
@Main
public static Executor provideMainExecutor(Context context) {
return context.getMainExecutor();
}
/**
* Provide a Main-Thread DelayableExecutor.
*/
@Provides
@Singleton
@Main
public static DelayableExecutor provideMainDelayableExecutor(@Main Looper looper) {
return new ExecutorImpl(looper);
}
/** */
@Binds
@Singleton
public abstract Execution provideExecution(ExecutionImpl execution);
/** */
@Provides
@Named(PRE_HANDLER)
public static Optional<Thread.UncaughtExceptionHandler> providesUncaughtExceptionHandler() {
return Optional.ofNullable(Thread.getUncaughtExceptionPreHandler());
}
}
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