1 /*
2  * Copyright (C) 2024 The Android Open Source Project
3  *
4  * Licensed under the Apache License, Version 2.0 (the "License");
5  * you may not use this file except in compliance with the License.
6  * You may obtain a copy of the License at
7  *
8  *      http://www.apache.org/licenses/LICENSE-2.0
9  *
10  * Unless required by applicable law or agreed to in writing, software
11  * distributed under the License is distributed on an "AS IS" BASIS,
12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13  * See the License for the specific language governing permissions and
14  * limitations under the License.
15  */
16 
17 package com.android.settingslib.datastore
18 
19 import android.os.Handler
20 import android.os.Looper
21 import java.util.concurrent.Executor
22 
23 /**
24  * Adapter of [Handler] and [Executor], where the task is executed on handler with given looper.
25  *
26  * When current looper is same with the given looper, task passed to [Executor.execute] will be
27  * executed immediately to achieve better performance.
28  *
29  * @param looper Looper of the handler.
30  */
31 open class HandlerExecutor(looper: Looper) : Handler(looper), Executor {
32 
executenull33     override fun execute(command: Runnable) {
34         if (looper == Looper.myLooper()) {
35             command.run()
36         } else {
37             post(command)
38         }
39     }
40 
41     companion object {
42         /** The main thread [HandlerExecutor]. */
43         val main = HandlerExecutor(Looper.getMainLooper())
44     }
45 }
46