1 /* 2 * Copyright 2017 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 foo.bar.testback; 18 19 import android.view.accessibility.AccessibilityNodeInfo; 20 21 import java.util.function.Predicate; 22 23 /** 24 * Utility class for working with AccessibilityNodeInfo 25 */ 26 public class AccessibilityNodeInfoUtils { findParent( AccessibilityNodeInfo start, Predicate<AccessibilityNodeInfo> condition)27 public static AccessibilityNodeInfo findParent( 28 AccessibilityNodeInfo start, Predicate<AccessibilityNodeInfo> condition) { 29 AccessibilityNodeInfo parent = start.getParent(); 30 if ((parent == null) || (condition.test(parent))) { 31 return parent; 32 } 33 34 return findParent(parent, condition); 35 } 36 findChildDfs( AccessibilityNodeInfo start, Predicate<AccessibilityNodeInfo> condition)37 public static AccessibilityNodeInfo findChildDfs( 38 AccessibilityNodeInfo start, Predicate<AccessibilityNodeInfo> condition) { 39 int numChildren = start.getChildCount(); 40 for (int i = 0; i < numChildren; i++) { 41 AccessibilityNodeInfo child = start.getChild(i); 42 if (child != null) { 43 if (condition.test(child)) { 44 return child; 45 } 46 AccessibilityNodeInfo childResult = findChildDfs(child, condition); 47 if (childResult != null) { 48 return childResult; 49 } 50 } 51 } 52 return null; 53 } 54 } 55