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Viewing file:     accessibility.js (2.14 KB)      -rw-r--r--

"use strict";

Object.defineProperty(exports, "__esModule", {
  value: true
});
exports.Accessibility = void 0;
/**
 * Copyright 2018 Google Inc. All rights reserved.
 * Modifications copyright (c) Microsoft Corporation.
 *
 * 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.
 */

class Accessibility {
  constructor(getAXTree) {
    this._getAXTree = void 0;
    this._getAXTree = getAXTree;
  }
  async snapshot(options = {}) {
    const {
      interestingOnly = true,
      root = null
    } = options;
    const {
      tree,
      needle
    } = await this._getAXTree(root || undefined);
    if (!interestingOnly) {
      if (root) return needle && serializeTree(needle)[0];
      return serializeTree(tree)[0];
    }
    const interestingNodes = new Set();
    collectInterestingNodes(interestingNodes, tree, false);
    if (root && (!needle || !interestingNodes.has(needle))) return null;
    return serializeTree(needle || tree, interestingNodes)[0];
  }
}
exports.Accessibility = Accessibility;
function collectInterestingNodes(collection, node, insideControl) {
  if (node.isInteresting(insideControl)) collection.add(node);
  if (node.isLeafNode()) return;
  insideControl = insideControl || node.isControl();
  for (const child of node.children()) collectInterestingNodes(collection, child, insideControl);
}
function serializeTree(node, whitelistedNodes) {
  const children = [];
  for (const child of node.children()) children.push(...serializeTree(child, whitelistedNodes));
  if (whitelistedNodes && !whitelistedNodes.has(node)) return children;
  const serializedNode = node.serialize();
  if (children.length) serializedNode.children = children;
  return [serializedNode];
}