/*
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* Copyright (C) 2014 Google Inc.
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package com.taoke.autopay.android.utils.accessibility.internal;
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import androidx.core.view.accessibility.AccessibilityNodeInfoCompat;
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import com.taoke.autopay.android.utils.accessibility.AccessibilityNodeInfoRef;
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public class NodeFocusFinder {
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public static final int SEARCH_FORWARD = 1;
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public static final int SEARCH_BACKWARD = -1;
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/**
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* Perform in-order navigation from a given node in a particular direction.
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*
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* @param node The starting node.
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* @param direction The direction to travel.
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* @return The next node in the specified direction, or {@code null} if
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* there are no more nodes.
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*/
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public static AccessibilityNodeInfoCompat focusSearch(AccessibilityNodeInfoCompat node, int direction) {
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final AccessibilityNodeInfoRef ref = AccessibilityNodeInfoRef.unOwned(node);
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switch (direction) {
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case SEARCH_FORWARD: {
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if (!ref.nextInOrder()) {
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return null;
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}
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return ref.release();
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}
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case SEARCH_BACKWARD: {
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if (!ref.previousInOrder()) {
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return null;
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}
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return ref.release();
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}
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}
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return null;
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}
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}
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