User:Conrad.Irwin/iwiki.js

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/*jshint undef:true, strict:true */
/*global mw, jQuery, languageContainers, tabbedLanguages, langname2code, langcode2name, langcode2FLname */

function add_prominent_interwikis(){
  //Can be caused by delay in timing
  if(window.langcode2name === void(0)){
    if(! document.callbacks_langcode ) 
      document.callbacks_langcode = {};
    document.callbacks_langcode['iwiki'] = add_prominent_interwikis;
    return false;
  }
  if(!window.languageContainers){
    var heads = document.getElementsByTagName('h2');

    for(var i=0;i<heads.length;i++){
      var code = search_for_text(heads[i],langname2code);
      if(code && check_interwiki(code))
        create_link(heads[i],code);
    }
  }
  else{
    for(var i=0;i<languageContainers.length;i++){
      var code = langname2code(tabbedLanguages[i]);
      if(code && check_interwiki(code))
        create_link(languageContainers[i].firstChild,code);
    }
  }
  function search_for_text(node,test){
    if(node.nodeType == 3){
      return test(node.nodeValue);
      
    }else if(node.childNodes){
      for(var i in node.childNodes){
        var res = search_for_text(node.childNodes[i],test);
        if(res) return res;
      }
    }
    return false;
  }
  
  var iwikis = false;
  function check_interwiki(code){
    if(! iwikis){
      iwikis = {};
      var plang = document.getElementById('p-lang');
      if(!plang) return false;
      var iwls = plang.getElementsByTagName('li');
      
      for(var i=0;i<iwls.length;i++){
        var guess = iwls[i].className.replace(/^interwiki-(.*)$/,"$1");
        iwikis[guess] = true;
      } 
    }
    return iwikis[code];
  }
  
  function create_link(head,code){
    var div = document.createElement('div');
    var lnk = document.createElement('a');
    
    var word = mw.config.get( "wgTitle" );
    var langname = langcode2name(code);
    
    div.style.cssText = 'font-size: 90%; padding-top: 0px;margin-left:15px; '+(window.languageContainers?'':'margin-top: -10px;');
    
    lnk.className = 'extiw';
    lnk.href = mw.config.get( "wgArticlePath" ).replace('$1',code+':'+word);
    lnk.setAttribute('title',''+langcode2FLname(code)+': '+word);
    
    lnk.appendChild(document.createTextNode(mw.config.get( "wgTitle" )));
    div.appendChild(lnk);   
    div.appendChild(document.createTextNode(' is in the '+langname+' Wiktionary'));

    head.parentNode.insertBefore(div,head.nextSibling);
  }
}

if (!mw.config.get('wgNamespaceNumber'))
	jQuery(document).ready(add_prominent_interwikis);