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/*
* Copyright (C) 2017 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.dialer.common.concurrent;
import android.app.FragmentManager;
import android.support.annotation.NonNull;
import com.android.dialer.common.concurrent.DialerExecutor.Worker;
/**
* Factory interface for creating {@link DialerExecutor} objects.
*
* <p>Factory instances may be used instead of the static methods in {@link DialerExecutors} in
* order to improve testability.
*
* @see DialerExecutors
*/
public interface DialerExecutorFactory {
/**
* Must be called from onCreate of your activity or fragment.
*
* @param taskId used for the headless fragment ID and task ID
* @param worker a function executed on a worker thread which accepts an {@link InputT} and
* returns an {@link OutputT}. It should ideally not be an inner class of your (meaning it
* should not be a lambda, anonymous, or non-static) but it can be a static nested class. The
* static nested class should not contain any reference to UI, including any activity or
* fragment or activity context, though it may reference some threadsafe system objects such
* as the application context.
*/
@NonNull
<InputT, OutputT> DialerExecutor.Builder<InputT, OutputT> createUiTaskBuilder(
@NonNull FragmentManager fragmentManager,
@NonNull String taskId,
@NonNull Worker<InputT, OutputT> worker);
/**
* Create a task from a non-UI context.
*
* @param worker a function executed on a worker thread which accepts an {@link InputT} and
* returns an {@link OutputT}. It should ideally not be an inner class of your (meaning it
* should not be a lambda, anonymous, or non-static) but it can be a static nested class. The
* static nested class should not contain any reference to UI, including any activity or
* fragment or activity context, though it may reference some threadsafe system objects such
* as the application context.
*/
@NonNull
<InputT, OutputT> DialerExecutor.Builder<InputT, OutputT> createNonUiTaskBuilder(
@NonNull Worker<InputT, OutputT> worker);
}
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