ahe@google.com
3b1cb964ff
R=kasperl@google.com Review URL: https://codereview.chromium.org//847573003 git-svn-id: https://dart.googlecode.com/svn/branches/bleeding_edge/dart@43063 260f80e4-7a28-3924-810f-c04153c831b5
50 lines
2.0 KiB
JavaScript
50 lines
2.0 KiB
JavaScript
// Copyright (c) 2013, 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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(function() {
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// Bootstrap support for Dart scripts on the page as this script.
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// TODO(18463): Remove user agent check. We will remove 'Dart' from there.
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if (!navigator.dartEnabled && (navigator.userAgent.indexOf('(Dart)') === -1)) {
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// TODO:
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// - Support in-browser compilation.
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// - Handle inline Dart scripts.
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// Fall back to compiled JS. Run through all the scripts and
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// replace them if they have a type that indicate that they source
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// in Dart code (type="application/dart").
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var scripts = document.getElementsByTagName("script");
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var length = scripts.length;
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for (var i = 0; i < length; ++i) {
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if (scripts[i].type == "application/dart") {
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// Remap foo.dart to foo.dart.js.
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if (scripts[i].src && scripts[i].src != '') {
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var script = document.createElement('script');
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script.src = scripts[i].src.replace(/\.dart(?=\?|$)/, '.dart.js');
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var parent = scripts[i].parentNode;
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// TODO(vsm): Find a solution for issue 8455 that works with more
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// than one script.
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document.currentScript = script;
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parent.replaceChild(script, scripts[i]);
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// Support for incremental compilation.
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script.onload = function (event) {
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var script = event.target;
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if (self.$dart_unsafe_incremental_support) {
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new WebSocket(script.src.replace(/^http/, 'ws')).onmessage =
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function (event) {
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var patch = String(event.data);
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self.$dart_unsafe_incremental_support.patch(patch);
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script.dispatchEvent(
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new CustomEvent(
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"dart_program_updated",
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{ bubbles: true, detail: { patch: patch } }));
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};
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}
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};
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}
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}
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}
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}
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})();
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