User:Connel MacKenzie/custom.js/citetab.js

Note – after saving, you may have to bypass your browser’s cache to see the changes.

Mozilla / Firefox / Safari: hold Shift while clicking Reload, or press either Ctrl-F5 or Ctrl-R (Command-R on a Macintosh);
Konqueror and Chrome: click Reload or press F5;
Opera: clear the cache in Tools → Preferences;
Internet Explorer: hold Ctrl while clicking Refresh, or press Ctrl-F5.

This script lacks a documentation subpage. Please create it.

Useful links: root page • root page’s subpages • links • redirects • your own

/*
[[User:Hippietrail]] wrote this.
<pre>
*/

// look for a wiki link with a specific title attribute and return the link's class name
// possible returns: null, '', 'new', 'new selected', 'selected new'
function lookforlink(tabli, title) {
  var foundclass = 'dunno';

  var allas = document.getElementById('bodyContent').getElementsByTagName('a'); 

  if (allas != -1) {
    for (var i = 0; i < allas.length; i++) {
      if (allas[i].title == title) {
        foundclass = allas[i].className;
        break;
      }
    }
  }

  // no link in this document so use ajax
  if (foundclass == 'dunno') {
    var req = window.XMLHttpRequest ? new XMLHttpRequest() : new ActiveXObject('Microsoft.XMLHTTP');

    req.open('GET', wgScriptPath + '/index.php?title=' + title + '&action=raw', true);
    req.onreadystatechange = function(event) {
      var li = tabli;
      if (req.readyState == 4) {
        // page exists. make tab link blue
        if (req.status == 200) {
          //li.removeAttribute('className');
          li.className = null;
        // page doesn't exist. make tab link red and change href to action edit
        } else if (req.status == 404) {
          li.className = 'new';
          li.firstChild.href = li.firstChild.href.replace(/\/wiki\/(.*)/, '/w/index.php?title=$1&action=edit');
        } else {
          debugPrint('bad rsc status ' + req.status + '\n');
        }
      }
    };
    req.send(null);
  }

  return foundclass;
}

// set or change the class and href of a tab
function fixtab(li, classes, title)
{
  if (classes && classes.match(/\bnew\b/))
    li.firstChild.href = wgScriptPath + '/index.php?title=' + title + '&action=edit';
  else
    li.firstChild.href = '/wiki/' + title;

  if (classes != null)
    li.className = classes;
  else
    //li.removeAttribute('className');
    li.className = null;
}

// add citations tab
function addCiteTab() {
  var currentpagetype = 'dunno';

  var maintitle;
  var talktitle;
  var citetitle;

  // make the correct article names for each tab
  switch (document.getElementsByTagName('body')[0].className.match(/\bns-(-?\d+)\b/)[1])
  {
  case '0':
    if (wgTitle.search(/^Citations:/) != -1) {
      currentpagetype = 'cite';
      maintitle = wgTitle.replace(/^Citations:(.*)$/, '$1');
      talktitle = 'Citations talk:' + maintitle;
      citetitle = wgTitle;
    } else {
      currentpagetype = 'article';
      maintitle = wgTitle;
      talktitle = 'Talk:' + maintitle;
      citetitle = 'Citations:' + wgTitle;
    }
    break
  case '1':
    currentpagetype = 'talk';
    maintitle = wgTitle;
    talktitle = 'Talk:' + maintitle;
    citetitle = 'Citations:' + wgTitle;
    break
  default:
    return;
  }

  var maintabli = document.getElementById('ca-nstab-main');
  var talktabli = document.getElementById('ca-talk');
  var citetabli = document.createElement('li');
  citetabli.id = 'ca-cite';
  citetabli.appendChild(document.createElement('a'));
  citetabli.firstChild.appendChild(document.createTextNode('citations'));

  if (currentpagetype == 'article' || currentpagetype == 'talk') {
    fixtab(citetabli, lookforlink(citetabli, citetitle), citetitle);

  } else if (currentpagetype == 'cite') {
    // move article tab href and classes to cite tab
    fixtab(citetabli, maintabli.className, citetitle);

    fixtab(maintabli, lookforlink(maintabli, maintitle), maintitle);
    fixtab(talktabli, lookforlink(talktabli, talktitle), talktitle);
  }

  // add the cite tab
  talktabli.parentNode.insertBefore(citetabli, talktabli.nextSibling);
}

addOnloadHook( addCiteTab );

/*
</pre>
*/