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40 lines
1.5 KiB
Dart
40 lines
1.5 KiB
Dart
// Copyright 2014 The Flutter Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file.
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import 'dart:html';
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import 'package:flutter_test/flutter_test.dart';
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/// Whether the current browser is Firefox.
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bool get isFirefox => window.navigator.userAgent.toLowerCase().contains('firefox');
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/// Finds elements in the DOM tree rendered by the Flutter Web engine.
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///
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/// If the browser supports shadow DOM, looks in the shadow root under the
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/// `<flt-glass-pane>` element. Otherwise, looks under `<flt-glass-pane>`
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/// without penetrating the shadow DOM. In the latter case, if the application
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/// creates platform views, this will also find platform view elements.
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List<Node> findElements(String selector) {
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final Element? glassPane = document.querySelector('flt-glass-pane');
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if (glassPane == null) {
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fail(
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'Failed to locate <flt-glass-pane>. Possible reasons:\n'
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' - The application failed to start'
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' - `findElements` was called before the application started'
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);
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}
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// TODO(htoor3): Remove shadowRoot selectors once DOM structure PR is merged.
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final Element? flutterView = document.querySelector('flutter-view');
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if(flutterView != null){
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return flutterView.querySelectorAll(selector);
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}
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final ShadowRoot? shadowRoot = glassPane.shadowRoot;
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return shadowRoot != null
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? shadowRoot.querySelectorAll(selector)
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: glassPane.querySelectorAll(selector);
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}
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