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68 lines
2.0 KiB
68 lines
2.0 KiB
4 years ago
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// Copyright (c) 2015, the Dart project authors. Please see the AUTHORS file
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// for details. All rights reserved. Use of this source code is governed by a
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// BSD-style license that can be found in the LICENSE file.
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// This script runs in HTML files and loads the corresponding test scripts for
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// a JS browser. It's used by "pub serve" and user-authored HTML files;
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window.onload = function() {
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// Sends an error message to the server indicating that the script failed to
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// load.
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//
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// This mimics a MultiChannel-formatted message.
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var sendLoadException = function(message) {
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window.parent.postMessage({
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"href": window.location.href,
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"data": [0, {"type": "loadException", "message": message}],
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"exception": true,
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}, window.location.origin);
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}
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// Listen for dartLoadException events and forward to the server.
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window.addEventListener('dartLoadException', function(e) {
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sendLoadException(e.detail);
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});
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// The basename of the current page.
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var name = window.location.href.replace(/.*\//, '').replace(/#.*/, '');
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// Find <link rel="x-dart-test">.
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var links = document.getElementsByTagName("link");
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var testLinks = [];
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var length = links.length;
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for (var i = 0; i < length; ++i) {
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if (links[i].rel == "x-dart-test") testLinks.push(links[i]);
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}
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if (testLinks.length != 1) {
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sendLoadException(
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'Expected exactly 1 <link rel="x-dart-test"> in ' + name + ', found ' +
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testLinks.length + '.');
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return;
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}
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var link = testLinks[0];
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if (link.href == '') {
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sendLoadException(
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'Expected <link rel="x-dart-test"> in ' + name + ' to have an "href" ' +
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'attribute.');
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return;
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}
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var script = document.createElement('script');
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script.src = link.href + '.browser_test.dart.js';
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script.onerror = function(event) {
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var message = "Failed to load script at " + script.src +
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(event.message ? ": " + event.message : ".");
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sendLoadException(message);
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}
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var parent = link.parentNode;
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document.currentScript = script;
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parent.replaceChild(script, link);
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};
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