xgraph-adapter/Tests/WebViewer/Static/bower_components/shadycss/examples/custom-style-element.js

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2018-10-19 20:17:48 -04:00
/**
@license
Copyright (c) 2016 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
*/
/*
Wrapper over <style> elements to co-operate with ShadyCSS
Example:
<custom-style>
<style>
...
</style>
</custom-style>
*/
(function() {
'use strict';
const CustomStyleInterface = window.ShadyCSS.CustomStyleInterface;
class CustomStyle extends HTMLElement {
constructor() {
super();
this._style = null;
CustomStyleInterface.addCustomStyle(this);
}
getStyle() {
if (!this._style) {
this._style = this.querySelector('style');
}
return this._style;
}
}
window.CustomStyle = CustomStyle;
window.customElements.define('custom-style', CustomStyle);
})();