[Ubiquity] Wolfram|Alpha in preview

wolframalpha.ubiq.js

const WA = 'http://www.wolframalpha.com/';
CmdUtils.CreateCommand({
  name: 'wolframalpha',
  description: (
    <a href={WA} style={<![CDATA[
      background:
        url('http://www.wolframalpha.com/images/basicSprite.png')
        white no-repeat scroll 1px -145px;
      display:inline-block; vertical-align:middle;
      width:352px; height:42px; z-index:-1;
      ]]>}>&#x3000;</a>.toXMLString()),
  author: 'satyr', license: 'MIT',
  argument: noun_arb_text,
  icon: WA +'favicon_calculate.ico',
  execute: function wa_execute({object: {text}}){
    Utils.openUrlInBrowser(this._url(text));
  },
  preview: function wa_preview(pb, {object: {text}}){
    pb.innerHTML = this.description;
    if(!text) return;
    var me = this;
    var ifr = pb.ownerDocument.createElement('iframe');
    ifr.setAttribute(
      'style', 'display:none; border:none; overflow:hidden; width:100%');
    var logo = pb.firstChild;
    logo.style.opacity = 0.4;
    ifr.src = this._url(text);
    Utils.listenOnce(pb.insertBefore(ifr, logo), 'load', function onload(){
      var tid, doc = ifr.contentDocument;
      $(doc.body).append(me._css);
      logo.style.opacity = 1;
      ifr.style.display = 'block';
      function fixHeight(){ ifr.height = doc.body.clientHeight }
      doc.addEventListener('DOMSubtreeModified', function onDOMSM(e){
        Utils.clearTimeout(tid);
        tid = Utils.setTimeout(fixHeight, 99);
      }, true);
    }, true);
  },
  _url: function wa__url(i) WA +'input/?i='+ encodeURIComponent(i),
  _css: '<style>'+ <![CDATA[
    header, footer, aside, #calculate, #feedback, #popanchor {display:none;}
    body, #content {display:inline-block; width:100%; padding:0;}
    #results {margin:0;}
    ]]>.toString().replace(/;/g, '!important;') +'</style>',
});