Polymer.dart is a set of comprehensive UI and utility components for building web applications. With Polymer.dart's custom elements, templating, data binding, and other features, you can quickly build structured, encapsulated, client-side web apps.
Polymer.dart is a Dart port of Polymer created and maintained by the Dart team. The Dart team is collaborating with the Polymer team to ensure that polymer.dart elements and polyfills are fully compatible with Polymer.
Polymer.dart replaces Web UI, which has been deprecated.
The Polymer.dart homepage contains a list of features, project status, installation instructions, tips for upgrading from Web UI, and links to other documentation.
See our TodoMVC example on github.
For more information about Dart, see http://www.dartlang.org/.
Add the polymer.dart package to your pubspec.yaml file:
dependencies:
polymer: ^1.0.0
Instead of using any
, we recommend using version ranges to avoid getting your
project broken on each release. Using a version range lets you upgrade your
package at your own pace. You can find the latest version number at
https://pub.dartlang.org/packages/polymer.
Note: While in release_candidate
stage, we recommend that you pin to a
specific version:
dependencies:
polymer: 1.0.0-rc.1
To build a deployable version of your app, add the polymer transformer to your pubspec.yaml file:
transformers:
- polymer:
entry_points:
- web/index.html
Then, run pub build
.
Polymer elements can be tested using either the original unittest
or new
test
packages. Just make sure to wait for initPolymer()
to complete before
running your tests:
@TestOn('browser')
import 'package:polymer/polymer.dart';
import 'package:test/test.dart';
void main() async {
await initPolymer();
// Define your tests/groups here.
}
You will also need to define a custom html file for your test (see the README for the test package for more information on this).
Note: If you are using the new test
package, it is important that you add
the test
transformer after the polymer
transformer, so it should look
roughly like this:
transformer:
- polymer:
entry_points:
- test/my_test.html
- test/pub_serve:
$include: test/**_test{.*,}.dart
Please file issues in our Issue Tracker or contact us on the Dart Web UI mailing list.