@polymer/polymer
Version:
The Polymer library makes it easy to create your own web components. Give your element some markup and properties, and then use it on a site. Polymer provides features like dynamic templates and data binding to reduce the amount of boilerplate you need to
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HTML
<!--
@license
Copyright (c) 2017 The Polymer Project Authors. All rights reserved.
This code may only be used under the BSD style license found at http://polymer.github.io/LICENSE.txt
The complete set of authors may be found at http://polymer.github.io/AUTHORS.txt
The complete set of contributors may be found at http://polymer.github.io/CONTRIBUTORS.txt
Code distributed by Google as part of the polymer project is also
subject to an additional IP rights grant found at http://polymer.github.io/PATENTS.txt
-->
<html>
<head>
<meta charset="utf-8">
<script src="../../../webcomponentsjs/webcomponents-lite.js"></script>
<script src="../../../web-component-tester/browser.js"></script>
<link rel="import" href="../../polymer.html">
</head>
<body>
<custom-style>
<style is="custom-style">
x-input {
border: 4px solid red;
@apply --cs-blue;
}
</style>
</custom-style>
<template id="late">
<custom-style>
<style is="custom-style">
html {
--cs-blue: {
border: 8px solid blue;
};
}
</style>
</custom-style>
</template>
<x-input id="input"></x-input>
<script>
/* global input */
suite('custom-style late property definition', function() {
test('late defined properties applied to custom-style', function(done) {
Polymer({
is: 'x-input'
});
var template = document.querySelector('template#late');
document.body.appendChild(document.importNode(template.content, true));
// wait 2 rounds of `afterNextRender` as `<custom-style>` boots asynchronously
Polymer.RenderStatus.afterNextRender(null, function() {
Polymer.RenderStatus.afterNextRender(null, function() {
assertComputed(input, '8px');
done();
});
});
});
});
function assertComputed(element, value, property, pseudo) {
var computed = getComputedStyle(element, pseudo);
property = property || 'border-top-width';
assert.equal(computed[property], value, 'computed style incorrect for ' + property);
}
</script>
</body>
</html>