| <!DOCTYPE html> |
| <!-- |
| Copyright (c) 2015 The Chromium Authors. All rights reserved. |
| Use of this source code is governed by a BSD-style license that can be |
| found in the LICENSE file. |
| --> |
| <link rel="import" href="/base/base.html"> |
| <script> |
| |
| 'use strict'; |
| |
| tr.exportTo('tr.b', function() { |
| function _iterateElementDeeplyImpl(element, cb, thisArg, includeElement) { |
| if (includeElement) { |
| if (cb.call(thisArg, element)) |
| return true; |
| } |
| |
| if (element.shadowRoot) { |
| if (_iterateElementDeeplyImpl(element.shadowRoot, cb, thisArg, false)) |
| return true; |
| } |
| for (var i = 0; i < element.children.length; i++) { |
| if (_iterateElementDeeplyImpl(element.children[i], cb, thisArg, true)) |
| return true; |
| } |
| } |
| function iterateElementDeeply(element, cb, thisArg) { |
| _iterateElementDeeplyImpl(element, cb, thisArg, false); |
| } |
| |
| function findDeepElementMatchingPredicate(element, predicate) { |
| var foundElement = undefined; |
| function matches(element) { |
| var match = predicate(element); |
| if (!match) |
| return false; |
| foundElement = element; |
| return true; |
| } |
| iterateElementDeeply(element, matches); |
| return foundElement; |
| } |
| |
| function findDeepElementsMatchingPredicate(element, predicate) { |
| var foundElements = []; |
| function matches(element) { |
| var match = predicate(element); |
| if (match) { |
| foundElements.push(element); |
| } |
| return false; |
| } |
| iterateElementDeeply(element, matches); |
| return foundElements; |
| } |
| |
| function findDeepElementMatching(element, selector) { |
| return findDeepElementMatchingPredicate(element, function(element) { |
| return element.matches(selector); |
| }); |
| } |
| function findDeepElementsMatching(element, selector) { |
| return findDeepElementsMatchingPredicate(element, function(element) { |
| return element.matches(selector); |
| }); |
| } |
| function findDeepElementWithTextContent(element, re) { |
| return findDeepElementMatchingPredicate(element, function(element) { |
| if (element.children.length !== 0) |
| return false; |
| return re.test(element.textContent); |
| }); |
| } |
| return { |
| iterateElementDeeply: iterateElementDeeply, |
| findDeepElementMatching: findDeepElementMatching, |
| findDeepElementsMatching: findDeepElementsMatching, |
| findDeepElementMatchingPredicate: findDeepElementMatchingPredicate, |
| findDeepElementsMatchingPredicate: findDeepElementsMatchingPredicate, |
| findDeepElementWithTextContent: findDeepElementWithTextContent |
| }; |
| }); |
| </script> |
