const Aliases = {
  t: {
    help: 'title',
    get text() info().title,
  },
  u: {
    help: 'URL',
    get text() info().url,
  },
  a: {
    help: 'title and URL as link tag',
    get text(){ with(info()) return <a href={url}>{title}</a>.toXMLString() },
  },
  f: {
    help: 'favicon as data:image/png',
    get text() img2du(Utils.currentChromeWindow.gBrowser.selectedTab.image),
  },
  s: {
    help: 'selected text',
    get text() CmdUtils.getSelection(),
  },
  h: {
    help: 'selection as HTML',
    get text() CmdUtils.getHtmlSelection(),
  },
  q: {
    help: 'selection as blockquote',
    get text(){
      with(info())
        return ((<blockquote cite={url} title={title}><x/></blockquote>+'')
                .replace(/\s*<x\/>\s{0,}/, CmdUtils.getHtmlSelection()));
    }
  },
  i: {
    help: 'selected image (or "1x1 transparent" if none) as data:image/png',
    get text(){
      var doc = CmdUtils.getDocument();
      return img2du(
        (/^image/.test(doc.contentType)
         ? doc.URL
         : (/src=([\"\']?)(\S+?)\1/(CmdUtils.getHtmlSelection())||0)[2]),
        ('data:image/png;base64,'+
         'iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAQAAAC1HAwCAA'+
         'AAC0lEQVQI12NgYAAAAAMAASDVlMcAAAAASUVORK5CYII='));
    }
  },
  j: {
    help: 'snapshot of current tab as data:image/jpeg',
    get text() CmdUtils.getWindowSnapshot(CmdUtils.getWindow(), {width: 600}),
  },
  M: {
    help: 'selection as MD5 hash',
    get text() Utils.computeCryptoHash('MD5', CmdUtils.getSelection()),
  },
  S: {
    help: 'selection as SHA1 hash',
    get text() Utils.computeCryptoHash('SHA1', CmdUtils.getSelection()),
  },
  d: {
    help: 'current datetime in RFC3399 format',
    get text() new Date().toISOString(),
  },
  U: {
    help: 'URL as JSON',
    get text(){
      var {url} = info(), o = {url: url},
      a = context.focusedWindow.document.createElement('a');
      a.href = url;
      for each(var p in ['protocol', 'host', 'pathname', 'search', 'hash'])
        o[p] = a[p];
      o.query =  o.search ? Utils.urlToParams(o.search) : {};
      return Utils.encodeJson(o);
    },
  },
  n: {
    help: 'line feed character',
    text: '\n',
  },
  T: {
    help: 'tab character',
    text: '\t',
  },
  /*
  _: {
    help: '',
    get text(){},
  },
   */
},
REA = RegExp('['+ [k for(k in Aliases)] +']', 'g'),
Help = ('<ul style="list-style:none; margin:0.2em; padding:0">'+
        [<li><tt><b>{k}</b>:</tt>{v.help}</li>
          for([k, v] in Iterator(Aliases))].join('') +
        '</ul>'),
DUCache = {'': 'data:,...'};
function img2du(src, ph)(
  DUCache[src] ||
  (CmdUtils.getImageSnapshot(src, function(du){ DUCache[src] = du }),
   DUCache[src] = ph || DUCache['']));
function info(){
  var t, u, {top, document: {title, URL}} = CmdUtils.getWindow();
  (/^https?:\/\/www\.google\.\w+\/reader\/view/.test(URL)
   ? ({title: t, url: u}) = top.wrappedJSObject.getPermalink() :
   /^https?:\/\/(?:reader\.livedoo|fastladde)r\.com\/reader/.test(URL)
   ? ({title: t, link: u}) = top.wrappedJSObject.get_active_item(1) : 0);
  return {title: t || title, url: u || URL};
}
function parse(txt) txt.replace(REA, replr);
function replr(m) Aliases[m].text;
CmdUtils.CreateCommand({
  name: 'copy',
  icon: 'chrome://ubiquity/skin/icons/convert.png',
  argument: {
    label: 'copy text',
    rankLast: true,
    default: function() this._sugg(Bin.lastInput() || ''),
    suggest: function(txt, htm, cb, sx){
      if(sx || !txt) return [];
      return [this._sugg(Bin.lastInput(txt))];
    },
    _sugg: function(t)({text: t, summary: t.replace(REA, this._mark)}),
    _mark: function($) <u>{$}</u>.toXMLString(),
  },
  description: ('Collects various informations into a text'+
                ' and sends it to your clipboard.'),
  help: (<>Try "copy tnu" to copy the page title and url
         separated by a new line.<br/><br/>
         [ Aliases ]</> + Help),
  execute: function copy_execute({object: {text}}){
    if(!text) return;
    displayMessage(Utils.clipboard.text = parse(text), this);
  },
  preview: function copy_preview(pb, {object: {text}}){
    pb.innerHTML =
      <pre>{parse(text) || <em>empty</em>}</pre>.toXMLString() + Help;
  },
  previewDelay: 200,
  author: 'satyr', license: 'MIT',
});
 
const noun_copyee = CmdUtils.NounType('...', {
  '@href': {
    help: 'page link "href"',
    get texts() [x.href
                 for each(x in $('a[href], link[href]',
                                 CmdUtils.getDocument()).get())],
    get htmls() [(<a href={t}>{t}</a>).toXMLString()
                 for each(t in this.texts)],
  },
  'img@src': {
    help: 'page image "src"',
    get texts() [x.src
                 for each(x in $('img[src]', CmdUtils.getDocument()).get())],
    get htmls() [(<img src={t} style="max-width:90%"/>).toXMLString()
                 for each(t in this.texts)],
  },
  tabs: {
    help: 'tab title and URL',
    get texts() [d.title +'\n'+ d.URL
                 for each(d in this._docs)],
    get htmls() [(<a href={d.URL}>{d.title}</a>).toXMLString()
                 for each(d in this._docs)],
    get _docs() (t.document for each(t in Utils.tabs.get())),
  },
  feeds: {
    help: 'page feeds',
    get texts() [l.href for each(l in this._lnks)],
    get htmls() [(<a href={l.href}>{l.title || l.href}</a>) +
                 (<span> ({l.tipe})</span>)
                 for each(l in this._lnks)],
    get _lnks() Array.filter(
      CmdUtils.getDocument().querySelectorAll('link[rel="alternate"]'),
      function(l) (/\b(?:rss|atom|xml)\b/i(l.type) &&
                   (l.tipe = RegExp.lastMatch))),
  },
  /*
  _: {
    help: '',
    get texts() [],
    get htmls() [],
  },
   */
});
CmdUtils.CreateCommand({
  name: 'copy all',
  icon: 'chrome://ubiquity/skin/icons/convert.png',
  argument: noun_copyee,
  description:
  'Copies to clipboard a newline separated list of ...',
  help: ''+ (
    [<><dt><b><code>{s.text}</code></b></dt><dd>{s.data.help}</dd></>
     for each(s in noun_copyee._list)]
      .reduce(function(l, x) l.appendChild(x), <dl/>)),
  execute: function copyall_execute({object: {text, data}}){
    if(!text) return;
    var {texts} = data;
    CmdUtils.copyToClipboard(texts.join('\n'));
    displayMessage(text +' (x'+ texts.length +')', this);
  },
  preview: function copyall_preview(pb, {object: {text, data}}){
    if(!text) return void this.previewDefault(pb);
    CmdUtils.previewList(pb, data.htmls, function copyall_list(i){
      displayMessage(Utils.clipboard.text = data.texts[i], this);
    });
  },
  author: 'satyr', license: 'MIT',
});