| // Copyright (c) 2013, the Dart project authors. Please see the AUTHORS file |
| // for details. All rights reserved. Use of this source code is governed by a |
| // BSD-style license that can be found in the LICENSE file. |
| |
| (function() { |
| // Bootstrap support for Dart scripts on the page as this script. |
| // TODO(18463): Remove user agent check. We will remove 'Dart' from there. |
| if (!navigator.dartEnabled && (navigator.userAgent.indexOf('(Dart)') === -1)) { |
| // TODO: |
| // - Support in-browser compilation. |
| // - Handle inline Dart scripts. |
| |
| // Fall back to compiled JS. Run through all the scripts and |
| // replace them if they have a type that indicate that they source |
| // in Dart code (type="application/dart"). |
| var scripts = document.getElementsByTagName("script"); |
| var length = scripts.length; |
| for (var i = 0; i < length; ++i) { |
| if (scripts[i].type == "application/dart") { |
| // Remap foo.dart to foo.dart.js. |
| if (scripts[i].src && scripts[i].src != '') { |
| var script = document.createElement('script'); |
| script.src = scripts[i].src.replace(/\.dart(?=\?|$)/, '.dart.js'); |
| var parent = scripts[i].parentNode; |
| // TODO(vsm): Find a solution for issue 8455 that works with more |
| // than one script. |
| document.currentScript = script; |
| parent.replaceChild(script, scripts[i]); |
| |
| // Support for incremental compilation. |
| script.onload = function (event) { |
| var script = event.target; |
| if (self.$dart_unsafe_incremental_support) { |
| new WebSocket(script.src.replace(/^http/, 'ws')).onmessage = |
| function (event) { |
| var patch = String(event.data); |
| self.$dart_unsafe_incremental_support.patch(patch); |
| script.dispatchEvent( |
| new CustomEvent( |
| "dart_program_updated", |
| { bubbles: true, detail: { patch: patch } })); |
| }; |
| } |
| }; |
| } |
| } |
| } |
| } |
| })(); |