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polito-codehilite.html
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polito-codehilite.html
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<link rel="import" href="../polymer/polymer.html" />
<dom-module id="polito-codehilite">
<link rel="stylesheet" href="//cdnjs.cloudflare.com/ajax/libs/highlight.js/9.0.0/styles/zenburn.min.css">
<script src="//cdnjs.cloudflare.com/ajax/libs/highlight.js/9.0.0/highlight.min.js"></script>
<style>
::content a { color: #efef8f; text-decoration:none; }
</style>
<template>
<pre>
<code class$="{{cssClass}}" id="codeContainer">
<content>
</content>
</code>
</pre>
</template>
<script>
Polymer({
is: "polito-codehilite",
properties: {
links: {
type: "Object",
observer: "_linksChanged"
}
},
attached: function() {
hljs.highlightBlock( this.$.codeContainer );
},
_linksChanged: function() {
if(!this.links) return;
console.log(this.links);
var self = this;
var keywords = Object.keys(this.links);
keywords.forEach(function(keyword) {
self._replaceWithLink(keyword, self.links[keyword]);
});
},
_replaceWithLink: function(keyword, url) {
var expression = new RegExp("([^\"])\\b(" + keyword + ")\\b([^\"])", "g");
this.$.codeContainer.innerHTML = this.$.codeContainer.innerHTML.replace(expression, '$1<a href="' + url + '">$2</a>$3');
}
});
</script>
</dom-module>