Converts image into dataURL.

image2dataurl.ubiq.js

CmdUtils.CreateCommand({
  name: "image2dataurl",
  synonyms: ['i2d'],
  icon: 'chrome://ubiquity/skin/icons/convert.png',
  description: 'Converts image into dataURL.',
  takes: {'image URL': {_name: '_', suggest: function(txt, htm, cb, sx){
    return sx ? [] : [CmdUtils.makeSugg(txt)];
  }}},
  execute: function(inp){
    this._withDataURL(inp, function(du){
      CmdUtils.copyToClipboard(du);
      CmdUtils.setLastResult(du);
      displayMessage({
        icon: this.icon, title: this.name, text: 'Copied to clipboard.'});
    });
  },
  preview: function(pbl, inp){
    this._withDataURL(inp, function(du){
      pbl.innerHTML = <div class={this.name} style="text-align:center"><pre
        style="overflow:hidden"><a href={du}
        accesskey="d">{du}</a></pre><img src={du}/></div>;
    }, function(){ pbl.innerHTML = this.description });
  },
  previewDelay: 17,
  _withDataURL: function(inp, ok, ng){
    var me = this, img = inp.text || this._getImageURL();
    img ? CmdUtils.getImageSnapshot(img, function(du) ok.call(me, du))
        : ng && ng.call(this);
  },
  _getImageURL: function(){
    return (jQuery('img', CmdUtils.getHtmlSelection()).attr('src') ||
            this._fromCSS() || CmdUtils.getWindow().location.href);
  },
  _fromCSS: function(){ try{
    var win = CmdUtils.getWindowInsecure(), sel = win.getSelection(),
    stl = win.getComputedStyle(
      sel.isCollapsed ? win.document.activeElement : sel.anchorNode, '');
    return (stl.backgroundImage || stl.listStyleImage)
      .replace(/^url\(|\)$|^none$/g, '');
  } catch(e){}},
  author: 'satyr'.link('http://d.hatena.ne.jp/murky-satyr'), license: 'MIT',
});