1 /*
2  * Copyright 2021 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 androidx.compose.ui.platform
18 
19 import android.content.Context
20 import android.os.Build
21 import androidx.annotation.RequiresApi
22 
23 /** Android implementation for [AccessibilityManager]. */
24 internal class AndroidAccessibilityManager(context: Context) : AccessibilityManager {
25     private companion object {
26         const val FlagContentIcons = 1
27         const val FlagContentText = 2
28         const val FlagContentControls = 4
29     }
30 
31     private val accessibilityManager =
32         context.getSystemService(Context.ACCESSIBILITY_SERVICE)
33             as android.view.accessibility.AccessibilityManager
34 
calculateRecommendedTimeoutMillisnull35     override fun calculateRecommendedTimeoutMillis(
36         originalTimeoutMillis: Long,
37         containsIcons: Boolean,
38         containsText: Boolean,
39         containsControls: Boolean
40     ): Long {
41         if (originalTimeoutMillis >= Int.MAX_VALUE) {
42             return originalTimeoutMillis
43         }
44         var uiContentFlags = 0
45         if (containsIcons) {
46             uiContentFlags = uiContentFlags or FlagContentIcons
47         }
48         if (containsText) {
49             uiContentFlags = uiContentFlags or FlagContentText
50         }
51         if (containsControls) {
52             uiContentFlags = uiContentFlags or FlagContentControls
53         }
54         return if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.Q) {
55             val recommended =
56                 Api29Impl.getRecommendedTimeoutMillis(
57                     accessibilityManager,
58                     originalTimeoutMillis.toInt(),
59                     uiContentFlags
60                 )
61             if (recommended == Int.MAX_VALUE) {
62                 Long.MAX_VALUE
63             } else {
64                 recommended.toLong()
65             }
66         } else if (containsControls && accessibilityManager.isTouchExplorationEnabled) {
67             Long.MAX_VALUE
68         } else {
69             originalTimeoutMillis
70         }
71     }
72 }
73 
74 /**
75  * This class is here to ensure that the classes that use this API will get verified and can be AOT
76  * compiled. It is expected that this class will soft-fail verification, but the classes which use
77  * this method will pass.
78  */
79 @RequiresApi(Build.VERSION_CODES.Q)
80 internal object Api29Impl {
getRecommendedTimeoutMillisnull81     fun getRecommendedTimeoutMillis(
82         accessibilityManager: android.view.accessibility.AccessibilityManager,
83         originalTimeout: Int,
84         uiContentFlags: Int
85     ): Int {
86         return accessibilityManager.getRecommendedTimeoutMillis(originalTimeout, uiContentFlags)
87     }
88 }
89