var iwiki = new function (){

// View interwiki

var pLang, ul, lis, count, ww, displayMode = window.iwDisplayMode || 0

this.onLoad = function(){
 pLang = document.getElementById('p-lang')
 if (!pLang) return
 var h3 = pLang.getElementsByTagName('h3')[0]
 if (!h3) return
 h3.addEventListener('click', iwiki.display)
 h3.style.cursor = 'pointer'
 h3.title = 'Change how interwiki displayed'
 if (displayMode) iwiki.display() 

 if (mw.config.get('wgAction')=='edit' || mw.config.get('wgAction')=='submit')
   iwiki.loadSync()
}


this.display = function(){
 displayMode++
 if (displayMode > 3) displayMode = 1
 var aa, page
 if (!ww) getDisplayedList()
 switch (displayMode){
 case 1: //no change
   ww.sort(function(a,b){return a.i > b.i ? 1 : -1})
   for(i=0; i < count; i++){
     aa = ww[i].li.firstChild
     aa.title = ''
     aa.innerHTML = ww[i].local
   }
   break
 case 2: //English names
   ww.sort(function(a,b){return a.name > b.name ? 1 : -1})
   for(i=0; i < count; i++){
     aa = ww[i].li.firstChild
     aa.title = ww[i].local
     aa.innerHTML = ww[i].name 
   }
   break
 case 3: //actual interwiki links
   ww.sort(function(a,b){return a.lang > b.lang ? 1 : -1})
   for(i=0; i < count; i++){
     aa = ww[i].li.firstChild
     page = aa.href.match(/org\/wiki\/(.*)$/)[1]
     page = decodeURIComponent(page)
     aa.title = ww[i].name + ': ' + page
     aa.innerHTML = ww[i].lang + ':' + page
   }
   break
 }
 for(i=1; i < count; i++)
   ul.appendChild(ww[i].li)
}

function getDisplayedList(){
 ul = pLang.getElementsByTagName('ul')[0] 
 lis = ul.getElementsByTagName('li')
 count = lis.length
 ww = new Array(count)
 var aa, lang
 for (var i=0; i < count; i++){
   aa = lis[i].firstChild
   lang = aa.href.substring(7, aa.href.indexOf('.'))
   ww[i] = { 
     lang: lang,
     local: aa.innerHTML,
     name: iwNames[lang] || '- ' + aa.innerHTML,	
     li: lis[i],
     i: i 
   }
 }
}



// Sync interwiki

var wpTextbox1, iw, iwdiv, iwtable, queriedLink, siteLang, wasRedirect

this.loadSync = function(){
 mw.util.addPortletLink('p-lang', 'javascript:iwiki.sync()', '(sync)')
}

this.sync = function(){
 iw = []
 queriedLink = ''
 wasRedirect = false
 siteLang = mw.config.get('wgServer').substring(7, mw.config.get('wgServer').indexOf('.'))
 wpTextbox1 = document.getElementById('wpTextbox1')
 var i, m, ma, re, txt = wpTextbox1.value
 //find local interwikis
 for (i in iwNames){
   re = new RegExp('\\[\\['+i+':'+'[^\\]]+\\]\\]', 'gi');   
   if (ma = txt.match(re)){
     if (ma.length==0) continue  
     for (var m=0; m < ma.length; m++)
       addIW(ma[m].substring(2,ma[m].length-2), false)  //drop brackets
   }
 }
 //add self
 addIW(siteLang + ':' + mw.config.get('wgPageName').replace(/_/g, ' ')) 
 //show
 showDiv()
}

function showDiv(){
 if (iwdiv) iwdiv.style.display = 'block'
 else createDiv()
 //scroll to it
 var yy = iwdiv.offsetTop, obj = iwdiv
 while (obj = obj.offsetParent) yy += obj.offsetTop
 scrollTo(0, yy)
 drawTable()
}


function createDiv(){
 var div = document.createElement('div')
 div.innerHTML =  '<div id=iwdiv style="padding:10px; margin:5px; border:1px solid gray; min-height:150px">\
<div style="float:left; margin-right:20px">\
<br><input type=button value=Query id=iwNext onclick=iwiki.queryNext()\
 style="background-color:#EEEEEE">\
<br><br><input type=button value="Add All" id=appendAll onclick=iwiki.appendAll()\
 style="background-color:#EEEEEE">\
<br><br><br><input type=button value=Apply id=iwApply onclick=iwiki.apply()\
 style="background-color:#E5EFE5">\
<br><br><input type=button value=Cancel id=iwCancel onclick=iwiki.cancel()\
 style="background-color:#F5E5E5">\
</div></div>'
 wpTextbox1.parentNode.insertBefore(div, wpTextbox1.nextSibling)
 iwdiv = div.firstChild
 //document.getElementById('iwNext').onclick = iwiki.queryNext
 //document.getElementById('iwApply').onclick = iwiki.apply
 //document.getElementById('iwCancel').onclick = iwiki.cancel
}

function drawTable(){
 iw.sort(function(a,b){ return (a.lnk>b.lnk)?1:-1})
 var tb = document.createElement('tbody')
 //draw
 var tr, td, nocell, needAddAllButton = false, lang, prev = ''
 for (var i=0; i<iw.length; i++){
   tr = document.createElement('tr') 
   lang = getLang(iw[i].lnk)
   isself = (siteLang == lang)
   //«x» link to delete cell
   if (iw[i].local && !isself)
     putCell('<a title=remove href="javascript:iwiki.remove(\'' + i + '\')">x</a>',' ') 
   else
     putCell('', ' ') 
   td.style.paddingRight = '5px'
   //local  cell
   if (iw[i].local) {
     if (isself) {
       putCell (iw[i].lnk)
       td.style.color = 'gray'
       td.style.fontSize = 'smaller'
     }else{
       putCell(getFullLink(iw[i].lnk))
       if (iw[i].isnew) td.style.backgroundColor = '#DFFFEF'
       if (queriedLink == iw[i].lnk) { //was just queried
          td.style.backgroundColor = '#EFEFEF'
          td.style.fontWeight = 'bold'
       }
     }
     if (lang == prev) td.style.border = '2px solid red'
     prev = lang
   }else //local missing
     putCell('', '#FFEADF') 
   //status cell
   if (isself){  
     putCell('', ' ')
   }else if (!iw[i].local && iw[i].remote) {
     putCell('<a title=append href="javascript:iwiki.append(\'' + i + '\')">←</a>', ' ')
     needAddAllButton = true
   }else{
     htm = '<a title=query href="javascript:iwiki.query(\'' + i + '\')"'
     htm += (iw[i].queried) ? '>v' : '>?'
     putCell(htm+'</a>', ' ')
   }
   td.style.textAlign = 'center'
   td.style.width = '50px'
   //remote cell
   if (iw[i].remote){
     if (iw[i].local) putCell('', '#F5F5F5');
     else putCell (getFullLink(iw[i].lnk))
   }else if (!queriedLink || queriedLink == iw[i].lnk){ //remote not needed
     if (wasRedirect) putCell('(redirect)', ' ')
     else putCell('', ' ')
   }else{ //remote is absent
     putCell('', '#FFEADF')
   }
   //add row
   tb.appendChild(tr)
 }//for
 if (iwtable) 
   iwtable.replaceChild(tb, iwtable.firstChild)
 else{
   iwtable = document.createElement('table')
   iwtable.id = 'iwtable' 
   iwtable.appendChild(tb)
   iwdiv.appendChild(iwtable)
 } 
 document.getElementById('appendAll').style.visibility = needAddAllButton ? 'visible' : 'hidden'
 //iwdiv.focus()

 function putCell(htm, style){
  td = document.createElement('td')
  td.style.padding = '0 10px 0 10px '
  td.innerHTML = htm
  if (!style) 
    td.style.border = '1px dotted gray'
  else if (style != ' ') 
    td.style.backgroundColor = style
  tr.appendChild(td)
  return
 } 
}

function addIW(iwlink, isRemote){
 if (!isRemote){ //local
   var iwnew = {}
   iwnew.lnk = iwlink
   iwnew.local = true
   //iwnew.remote = false
   //iwnew.queried = false
   iw[iw.length] = iwnew
 }else{ //remote
   //if (siteLang == getLang(iwlink)) return
   var isFound = false
   for (var i=0; i<iw.length; i++)
     if (iw[i].lnk == iwlink) { isFound = true;  break }
   if (isFound){
     iw[i].remote = true
   }else{
     var iwnew = {}
     iwnew.lnk = iwlink
     iwnew.local = false
     iwnew.remote = true
     iw[iw.length] = iwnew
   }   
 }
}

function getLang(iwlink){ //en:Page -> en
 return iwlink.substring(0, iwlink.indexOf(':'))
}

function getPage(iwlink){ // //en:Page -> Page
 return iwlink.substring(iwlink.indexOf(':')+1)
}

function getFullLink(iwlink){ ////en:Page -> <a href=…
 return '<a href="' + 'http://' + getLang(iwlink) 
   + mw.config.get('wgServer').substring(mw.config.get('wgServer').indexOf('.')) + '/wiki/' 
   + encodeURIComponent(getPage(iwlink))  + '">' + iwlink + '</a>'
}




this.append = function(i){
 iw[i].local = true
 iw[i].isnew = true
 drawTable()
}

this.appendAll = function(){
 for (var i=0; i<iw.length; i++)
   if (!iw[i].local && iw[i].remote){
      iw[i].local = true
      iw[i].isnew = true
   }
 drawTable()
}

this.remove = function(i){
 iw[i].local = false
 //iw.splice(i,1)
 drawTable()
}

this.apply = function(){
 var i, re, txt = wpTextbox1.value
 //remove old
 for (i in iwNames){
   re = new RegExp('\\[\\['+i+':'+'[^\\]]+\\]\\]\n?', 'gi')
   txt = txt.replace(re, '\x01') 
 }
 //create new
 var iwtxt = ''
 for (i=0; i<iw.length; i++)
   if (iw[i].local && getLang(iw[i].lnk) != siteLang) 
     iwtxt += '[' + '[' + iw[i].lnk + ']]\n'
 //append new
 txt = txt.replace('\x01', iwtxt).replace(/\x01/g,'')
 wpTextbox1.value = txt
 iwdiv.style.display = 'none'
}

this.cancel = function(){
 iwdiv.style.display = 'none'
}

this.queryNext = function(){
 for (var i=0; i<iw.length; i++)
   if (iw[i].local && !iw[i].queried && getLang(iw[i].lnk) != siteLang) { 
      iwiki.query(i)
      break 
   }
} 

this.query = function(idx){
 document.getElementById('iwNext').style.textDecoration = 'blink'
 queriedLink = iw[idx].lnk //remember
 queryGo('langlinks&titles='+encodeURIComponent(getPage(queriedLink)) 
  + '&proxylang='+getLang(queriedLink),  iwiki.process )
}



this.process = function(q){
 document.getElementById('iwNext').style.textDecoration = 'none'
 //mark queried link
 for (var i=0; i<iw.length; i++) 
   if (queriedLink == iw[i].lnk){ iw[i].queried = true;  break  }
 //clear last results
 for (var i=0; i<iw.length; i++) { 
   iw[i].remote = false
   if (!iw[i].local) { iw.splice(i,1); i-- } //remove item
 }
 //add new iwikis
 links = anyChild(q.pages).langlinks
 if (links){
   for (var n=0; n<links.length; n++){
     iwlink = links[n].lang + ':' + links[n]['*']
     addIW(iwlink, true)
   }
   wasRedirect = false
 }else if (typeof anyChild(q.pages).redirect == 'string') 
   wasRedirect = true 
 drawTable()
}



function queryGo(params, func){
 var aj = sajax_init_object()
 aj.onreadystatechange = function() {
   if (aj.readyState != 4) return
   //if (aj.status == 200) {
     eval('q='+aj.responseText) 
     func(q)
   //} else jsMsg('Empty query result') //else func(null)
 }
 var url='/w/query.php?format=json&noprofile&what=' + params
 aj.open("GET",url,true)
 //aj.setRequestHeader('Accept','text/*')
 aj.send(null)
}


//interwiki codes and names, extracted from http://meta.wikimedia.org/wiki/List_of_Wikipedias
var iwNames = {
'en':'English',
'de':'German',
'fr':'French',
'pl':'Polish',
'ja':'Japanese',
'nl':'Dutch',
'it':'Italian',
'pt':'Portuguese',
'es':'Spanish',
'sv':'Swedish',
'ru':'Russian',
'zh':'Chinese',
'fi':'Finnish',
'no':'Norwegian (Bokmål)',
'vo':'Volapük',
'ro':'Romanian',
'tr':'Turkish',
'eo':'Esperanto',
'ca':'Catalan',
'sk':'Slovak',
'cs':'Czech',
'uk':'Ukrainian',
'hu':'Hungarian',
'da':'Danish',
'id':'Indonesian',
'he':'Hebrew',
'lt':'Lithuanian',
'sr':'Serbian',
'sl':'Slovenian',
'lmo':'Lombard',
'bg':'Bulgarian',
'ko':'Korean',
'ar':'Arabic',
'et':'Estonian',
'te':'Telugu',
'hr':'Croatian',
'new':'Newar / Nepal Bhasa',
'ceb':'Cebuano',
'gl':'Galician',
'th':'Thai',
'el':'Greek',
'nn':'Norwegian (Nynorsk)',
'fa':'Persian',
'vi':'Vietnamese',
'ms':'Malay',
'bpy':'Bishnupriya Manipuri',
'eu':'Basque',
'bs':'Bosnian',
'simple':'Simple English',
'lb':'Luxembourgish',
'is':'Icelandic',
'sq':'Albanian',
'ka':'Georgian',
'az':'Azeri',
'br':'Breton',
'bn':'Bengali',
'la':'Latin',
'io':'Ido',
'hi':'Hindi',
'sh':'Serbo-Croatian',
'mr':'Marathi',
'su':'Sundanese',
'mk':'Macedonian',
'nap':'Neapolitan',
'cy':'Welsh',
'ta':'Tamil',
'lv':'Latvian',
'scn':'Sicilian',
'nds':'Low Saxon',
'oc':'Occitan',
'pms':'Piedmontese',
'jv':'Javanese',
'tl':'Tagalog',
'ku':'Kurdish',
'ast':'Asturian',
'wa':'Walloon',
'af':'Afrikaans',
'tg':'Tajik',
'be-x-old':'Belarusian (Tarashkevitsa)',
'roa-tara':'Tarantino',
'an':'Aragonese',
'be':'Belarusian',
'ru-sib':'Siberian/North Russian',
'ksh':'Ripuarian',
'ht':'Haitian',
'cv':'Chuvash',
'ur':'Urdu',
'mi':'Maori',
'sw':'Swahili',
'vec':'Venetian',
'uz':'Uzbek',
'fy':'West Frisian',
'zh-yue':'Cantonese',
'ga':'Irish',
'co':'Corsican',
'qu':'Quechua',
'kn':'Kannada',
'gd':'Scottish Gaelic',
'ml':'Malayalam',
'yi':'Yiddish',
'yo':'Yoruba',
'nah':'Nahuatl',
'bat-smg':'Samogitian',
'pam':'Kapampangan',
'tt':'Tatar',
'ia':'Interlingua',
'sa':'Sanskrit',
'hsb':'Upper Sorbian',
'hy':'Armenian',
'li':'Limburgian',
'als':'Alemannic',
'map-bms':'Banyumasan',
'am':'Amharic',
'pag':'Pangasinan',
'zh-min-nan':'Min Nan',
'nrm':'Norman',
'fo':'Faroese',
'se':'Northern Sami',
'nds-nl':'Dutch Low Saxon',
'fur':'Friulian',
'bh':'Bihari',
'nov':'Novial',
'war':'Waray-Waray',
'pi':'Pali',
'vls':'West Flemish',
'ilo':'Ilokano',
'sco':'Scots',
'frp':'Franco-Provençal/Arpitan',
'lij':'Ligurian',
'ne':'Nepali',
'dv':'Divehi',
'os':'Ossetian',
'zh-classical':'Classical Chinese',
'diq':'Zazaki',
'mt':'Maltese',
'kk':'Kazakh',
'csb':'Kashubian',
'pdc':'Pennsylvania German',
'lad':'Ladino',
'fiu-vro':'Võro',
'kw':'Cornish',
'to':'Tongan',
'bar':'Bavarian',
'ps':'Pashto',
'rm':'Romansh',
'tk':'Turkmen',
'ang':'Anglo-Saxon',
'ln':'Lingala',
'mn':'Mongolian',
'jbo':'Lojban',
'tpi':'Tok Pisin',
'or':'Oriya',
'wo':'Wolof',
'ty':'Tahitian',
'eml':'Emilian-Romagnol',
'ky':'Kirghiz',
'arc':'Assyrian Neo-Aramaic',
'ig':'Igbo',
'roa-rup':'Aromanian',
'mo':'Moldovan',
'gu':'Gujarati',
'km':'Khmer',
'ie':'Interlingue',
'kab':'Kabyle',
'ks':'Kashmiri',
'wuu':'Wu',
'glk':'Gilaki',
'zea':'Zealandic',
'mg':'Malagasy',
'tet':'Tetum',
'cu':'Old Church Slavonic',
'sc':'Sardinian',
'so':'Somali',
'gv':'Manx',
'kg':'Kongo',
'udm':'Udmurt',
'si':'Sinhalese',
'iu':'Inuktitut',
'pa':'Punjabi',
'rmy':'Romani',
'cbk-zam':'Zamboanga Chavacano',
'na':'Nauruan',
'haw':'Hawaiian',
'lo':'Lao',
'bo':'Tibetan',
'sd':'Sindhi',
'chr':'Cherokee',
'ba':'Bashkir',
'got':'Gothic',
'om':'Oromo',
'ee':'Ewe',
'ti':'Tigrinya',
'as':'Assamese',
'sm':'Samoan',
'ay':'Aymara',
'ug':'Uyghur',
'hak':'Hakka',
'av':'Avar',
'cdo':'Min Dong',
'mzn':'Mazandarani',
'ce':'Chechen',
'bm':'Bambara',
'nv':'Navajo',
'pap':'Papiamentu',
'cr':'Cree',
'zu':'Zulu',
'rw':'Kinyarwanda',
'my':'Burmese',
'tlh':'Klingon',
'xh':'Xhosa',
've':'Venda',
'ik':'Inupiak',
'dz':'Dzongkha',
'pih':'Norfolk',
'gn':'Guarani',
'ss':'Swati',
'ab':'Abkhazian',
'kl':'Greenlandic',
'kv':'Komi',
'bug':'Buginese',
'ak':'Akan',
'bi':'Bislama',
'st':'Sesotho',
'bxr':'Buryat (Russia)',
'tn':'Tswana',
'xal':'Kalmyk',
'tw':'Twi',
'ny':'Chichewa',
'fj':'Fijian',
'ff':'Fula',
'ha':'Hausa',
'tum':'Tumbuka',
'sn':'Shona',
'za':'Zhuang',
'ki':'Kikuyu',
'sg':'Sango',
'ii':'Sichuan Yi',
'lg':'Luganda',
'cho':'Choctaw',
'lbe':'Lak',
'rn':'Kirundi',
'chy':'Cheyenne',
'ts':'Tsonga',
'mh':'Marshallese',
'ch':'Chamorro',
'ng':'Ndonga',
'aa':'Afar',
'kj':'Kuanyama',
'ho':'Hiri Motu',
'mus':'Muscogee',
'kr':'Kanuri',
'hz':'Herero',
'tokipona':'Tokipona'
}

} //obj


function anyChild(obj) {  for(var key in obj)  return obj[key]; return null }


$(iwiki.onLoad)