Allow developers to try out dart2js in their web apps.

We look for a dart-compiler attribute on the script tag and if it is set to dart2js we use the dart2js generated file.

R=sandholm@google.com
BUG=
TEST=

Review URL: https://chromiumcodereview.appspot.com//10388005

git-svn-id: https://dart.googlecode.com/svn/branches/bleeding_edge/dart@7418 260f80e4-7a28-3924-810f-c04153c831b5
This commit is contained in:
kasperl@google.com 2012-05-08 15:30:53 +00:00
parent 3ee233c155
commit f379a1d8a3

View file

@ -3,27 +3,43 @@
// BSD-style license that can be found in the LICENSE file.
// Bootstrap support for Dart scripts on the page as this script.
if (navigator.webkitStartDart) {
navigator.webkitStartDart();
} else {
// TODO:
// - Support in-browser compilation.
// - Handle inline Dart scripts.
window.addEventListener("DOMContentLoaded", function (e) {
// Fall back to compiled JS.
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.js.
// TODO:
// - Support in-browser compilation.
// - Handle inline Dart scripts.
if (scripts[i].src && scripts[i].src != '') {
var script = document.createElement('script');
// 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.
//
// <script type="application/dart" src="<file>.dart"></script>
//
// If the script tag has a 'data-compiler' attribute set to
// dart2js then we use the dart2js generated file rather than the
// one produced by frog:
//
// <script ... data-compiler="dart2js"></script>
//
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.js or foo.js_ depending
// on the chosen compiler (frog or dart2js).
if (scripts[i].src && scripts[i].src != '') {
var script = document.createElement('script');
var compiler = scripts[i].getAttribute('data-compiler');
if (compiler == "dart2js") {
script.src = scripts[i].src + '.js_';
} else {
script.src = scripts[i].src + '.js';
var parent = scripts[i].parentNode;
parent.replaceChild(script, scripts[i]);
}
var parent = scripts[i].parentNode;
parent.replaceChild(script, scripts[i]);
}
}
}, false);
}
}, false);
}