window.histComb = new function(){



if (!window.histCombTalk) histCombTalk = 't'

if (!window.histCombContrib) histCombContrib = 'c'

if (!window.histCombUndo) histCombUndo = '×'

if (!window.histCombMyBg) histCombMyBg = '#F0FFF0'



var pagehis,  histRow, histSize, isCombEdits = false





this.onLoad = function(){



 pagehis = document.getElementById('pagehistory') 

 if (!pagehis) return

 histRow = pagehis.getElementsByTagName('li')

 histSize = new Array (histRow.length)

 var row, spans, i, aa, author, author_p = '', size_digits  

 var sameAuthor = 0, thisMinor, allMinor = true



 for (var rr=histRow.length-1; rr>=0; rr--){ //main loop: all rows bottom to top

  row = histRowrr

  thisMinor = false

  spans = row.getElementsByTagName('span')

  //check all spans

  for (i=0; i<spans.length; i++)

    switch (spansi].className){

    case 'history-size':

      size_digits = spansi].innerHTML.match(/\d+/g)

      histSizerr = size_digits ? size_digits.join('') : '0'

      if (histSizerr+1]){ 

        spansi].title = spansi].innerHTML.replace(/&nbsp;/g,' ')

        insertDiffValue(spansi], histSizerr - histSizerr+1])

      }

      break

    case 'minor':

      thisMinor = true

      break

    case 'history-user': // get user name and shorten talk/contribs

      aa = spansi].getElementsByTagName('a')

      if (aa.length && aa1]){

    	author = aa1].title.split(':')[1

    	aa1].innerHTML = histCombTalk 

    	if (aa.length >= 3 && (aa2].title.indexOf(':Contributions/') != -1)) //for anons this could be 'block'

        	aa2].innerHTML = histCombContrib 

      }

      break

    case 'mw-history-undo':

      aa = spansi].getElementsByTagName('a')[0

      aa.title = aa.innerHTML 

      aa.innerHTML = histCombUndo

      break

    //case 'comment':  histSumm = spans[i].innerHTML  break 

    }//end switch inside for 

    

    if (!histSizerr && histSizerr+1]) histSizerr = histSizerr+1 //assume it was '(un)protect' edit



  if (mw.config.get('wgUserName') == author) histRowrr].style.backgroundColor = histCombMyBg

  //check how many consequent edits

  if (author == author_p) 

    sameAuthor++

  else {

    if (sameAuthor > 1) createCombineEdit(rr+1, sameAuthor, allMinor)

    sameAuthor = 1 

    author_p = author

    allMinor = thisMinor

  }

  if (!thisMinor) allMinor = false

 }//main loop

 

 //collapse top editor too

 if (sameAuthor>1) {

   createCombineEdit(0, sameAuthor, allMinor)

   if (histRow.length > sameAuthor && !window.histCombNoCollapse) //if collapsing top row - make  next row selected

     histRowsameAuthor].getElementsByTagName('input')[0].click()

 }



 //add  "expand/collapse all" link

 if (isCombEdits) { 

   var togAll = document.createElement('a')

   togAll.appendChild(document.createTextNode('[±]'))

   togAll.href = 'javascript:histComb.toggleAll()'

   pagehis.parentNode.insertBefore(togAll, pagehis.previousSibling)   

 }





 //bonus: link to toоlserver

 var lnk = document.createElement('a')

 lnk.style.marginLeft = '10px'

 lnk.href = 'https://xtools.wmflabs.org/articleinfo/'

  +mw.config.get('wgServer').substring(mw.config.get('wgServer').lastIndexOf('/')+1, mw.config.get('wgServer').indexOf('.'))

  +mw.config.get('wgServer').substring(mw.config.get('wgServer').indexOf('.'))

  +'/'+mw.config.get('wgPageName')+'#top-editors'

 lnk.appendChild(document.createTextNode('Contributors'))

 lnk.title = 'All authors sorted by edits (on Toolforge)'

 if (i=document.getElementsByClassName('mw-history-subtitle')[0]) i.appendChild(lnk)





}





this.toggleAll = function(){

 var links = $(pagehis).find('a.collapsedEdits');

 var state = (links0].innerHTML == '[–]')

 for (var i=0; i<links.length; i++)

   if (state == (linksi].innerHTML == '[–]'))

     eval(linksi].href)

}





this.toggle = function (m, len, isMinor){ //handler for collapsing link

 var row = histRowm

 var spans = row.getElementsByTagName('span')

 var plus = row.lastChild

 var radios = row.getElementsByTagName('input')

 var topDiff = row.getElementsByTagName('a')[ m > 0 ? 1 : 0 // "diff to last" in the combined edit

 var i, clss, bottomDiff, oldid

 var isHiding = (plus.innerHTML == '[–]')

 if (isHiding) {//need to collapse −

   plus.innerHTML = '[' + len + ']'

   row.style.borderLeft = '1px solid transparent'

   //hide other rows

   for (i=m+1; i<m+len; i++) histRowi].style.display = 'none'

   //"diff from last" link: get oldid from the lowest collapsed edit

   bottomDiff = histRowm+len-1].getElementsByTagName('a')[1].href

   if (bottomDiff.indexOf('&diff=') == -1)  topDiff.style.visibility = 'hidden' //the very 1st edit

   oldid = bottomDiff.match(/oldid=(\d+)/)[1

   topDiff'old' = topDiff.href

   topDiff.href = topDiff.href.replace(/&oldid=\d+/, '&oldid='+oldid)

 }else{ //need to expand

   plus.innerHTML = '[–]'

   //show other rows and visually reference the whole group

   row.style.borderLeft = '1px dotted gray'

   for (i=m+1; i<m+len; i++){

     histRowi].style.display = 'block'

     histRowi].style.borderLeft = '1px dotted gray'

     histRowi].style.listStyle = 'none none'

   }

   histRowm+len-1].style.borderBottom = '1px dotted gray'

   topDiff.href = topDiff'old'

   topDiff.style.visibility = 'visible'

 }

 //hide/show/modify spans in this row

 for (i=0; i<spans.length; i++)

   switch (spansi].className.split(' ')[0]){

   case 'minor':

     spansi].style.display = (isHiding && !isMinor)?'none':'inline'

     break

   case 'history-size': //switch to  combined diff size and back

     insertDiffValue(spansi], histSizem - (isHiding ? histSizem+len : histSizem+1]))

     break

   case 'comment': //hide/show

     spansi].style.display = (isHiding && !window.histCombLeaveComment)?'none':'inline'

     break

   case 'mw-history-undo':

     var undoLnk = spansi].getElementsByTagName('a')[0

     if (isHiding) {

       undoLnk'old' = undoLnk.href

       undoLnk.href = undoLnk.href.replace(/&undoafter=\d+/, '&undoafter='+oldid)

     }else

       undoLnk.href = undoLnk'old'

     break

   //case 'history-user':

 }

}





function createCombineEdit(m, len, isMinor){ //creates collapsing link for row m down to row m+len

 var row = histRowm

 row.style.listStyle = 'none none'

 row.style.position = 'relative'

 var plus = document.createElement('a')

 plus.className = 'collapsedEdits'

 plus.appendChild(document.createTextNode('[–]'))

 plus.style.position = 'absolute'

 plus.style.left = '-22px'

 plus.style.top = '2px'

 plus.href = 'javascript:histComb.toggle('+m+','+len+','+isMinor+')'

 row.appendChild(plus)

 if (!window.histCombNoCollapse) histComb.toggle(m, len, isMinor) //and collapse

 isCombEdits = true

 

 //unexplained IE bug: in row just under collapsed edit  radios were jumping to the left, links were unclickable

 if (navigator.userAgent.indexOf('MSIE') != -1 && m+len < histRow.length){ //make all elements 'relative'

  var els = histRowm+len].getElementsByTagName('*')

  for (i=0; i<els.length; i++)  

     if (elsi].style && !elsi].style.position) elsi].style.position = 'relative'

 }

}





function insertDiffValue(span, value){

 var html, class2

 if (value>0) {

  html = '(+' + value + ')'

  class2 = ' mw-plusminus-pos'

 } else if (value<0) {

  html = '(' + value + ')'

  class2 = ' mw-plusminus-neg'

 } else {

  html = '(0)'

  class2 = ' mw-plusminus-null'

 }

 span.style.fontWeight = (value < -500) ? 'bold' : 'normal'

 span.innerHTML = html

 span.className = span.className.split(' ')[0 + class2

}



}//obj



if (mw.config.get('wgAction') == 'history') $(histComb.onLoad)