User:Js/diffs.js
< User:Js
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 | This user script seems to have a documentation page at User:Js/diffs. |
/*
Parameters, most should be set to true to override standard behaviour:
dfNoPopups: no popups
dfNoAjaxDiff: no quick next/prev loading on usual diff pages
dfNoArrowKeys : disable keyboard shortcuts (left/right arrow keys) for next/prev diff
dfNoWikiParsing : completely disable wikicode parsing in diffs
dfParseContext : also parse gray columns
dfNoLargerFont: set to true to keep normal small font for changed areas
dfNoWaitCursor : set to true to disable cursor changing to "wait"
wikEdFullDiff: do not shorten JS Diff Engine output (pretty much useless)
dfImproveAdvanced : imrove diffs even more (make simple diffs as one column)
dfOneColumn : convert all diffs to one column view
dfDiffLinksCSS: set this to CSS string to replace default "{font-style:italic}" for all diff links
*/
var diffScript = new function(){ //wrapper
var dfNoWikiParsing = window.dfNoWikiParsing
var currentLink, currentTable
var noImprove, curTitle
var requestedPages = {} //aray of retreived diffs, used as cache
var isIE = navigator.userAgent.indexOf('MSIE') != -1
var popupCount = 0 //, popupArray = []
this.start = function(){
addHandler(document, 'click', onClick)
if (!window.dfNoArrowKeys) addHandler(document, 'keyup', onKeyUp)
if (!window.dfNoPopups) addCSS('a[href^="'+wgServer+'/w/index.php"][href*="diff="],\
a[href^="/w/index.php"][href*="diff="]' + (window.dfDiffLinksCSS || '{font-style:italic}'))
//if (isIE && isIE6) //no CSS3 support in IE6, should make links italic manually
if (document.URL.indexOf('diff=') != -1){ //this is a diff page
//find diff table
var content = document.getElementById('content') || document.getElementById('mw_content') || document
var i = 0, tables = content.getElementsByTagName('table')
while (i < tables.length && tables[i].className != 'diff') i++
if (i == tables.length) return //then it's div.firstrevisionheader
currentTable = tables[i]
//remember url and title
currentTable.parentNode.diffURL = document.URL
currentTable.parentNode.diffTitle = wgPageName
//improve diff Table
requestedPages[document.URL] = '<table class=diff">' + currentTable.innerHTML + '</table>'
improveDiff()
currentTable.parentNode.insertBefore(createToolbar(), currentTable.parentNode.firstChild)
}
}
function onClick(e){
cursorNormal() //cancel waiting indicator if something went wrong
//check if this was on a diff link
e = e || window.event
if (e.shiftKey || e.button == 2) return // shift key or right click
if ((isIE && e.button == 4) || (!isIE && e.button == 1)) return //middle click
var lnk = e.target || e.srcElement
var url = lnk.href
if (!url || url.indexOf('diff=') == -1) return //not a diff
if (url.indexOf(wgServer) != 0 && url.charAt(0) != '/') return //diff, but not to this server
if (lnk.parentNode.className == 't-print') return
//check if it was nex/prev diff link
currentLink = lnk
var isClickIntercepted = true
if (/differences-(prev|next)link/.test(lnk.id)) isClickIntercepted = followNextLink()
else if (!window.dfNoPopups) createPopup()
else isClickIntercepted = false
//do not follow the link
if (isClickIntercepted){
if (e.preventDefault) e.preventDefault(); else e.returnValue = false
return false
}else
return true
}
function onClickError(msg){
jsMsg(msg)
markLink(currentLink, true)
return false
}
function improveDiff(){
if (noImprove || currentTable.innerHTML.length>70000) return
addDiffTableCSS()
var trs = currentTable.getElementsByTagName('tr'), tr, tds, td, stripes = false
curTitle = currentTable.parentNode.diffTitle //to be used in processHTML()
//trs[0].className = 'df-header'
for (var i=1; i<trs.length; i++){
tr = trs[i]
tds = tr.getElementsByTagName('td')
tr.className = 'df-change' //by default, as most common case
if (tds.length == 1){ // 'One intermediate revision not shown'
//tr.className = 'message'
continue
}else if (tds.length == 2){ // "Line xx:"
tr.className = 'df-lineno'
expandCell(tds[1])
continue
}else if (tds.length == 3 && tds[1].className == 'diff-deletedline'){
if (tds[1].innerHTML.length==0) tds[1].innerHTML = ' '
expandCell(tds[1], 'df-deletedline') //new class, means the line was simply deleted, has pink background
continue
}else if (tds.length == 3 && tds[2].className == 'diff-addedline'){
processHTML(tds[2])
htm = tds[2].innerHTML
if (htm.length==0) tds[2].innerHTML = ' '
if (stripes) tr.className += ' odd'
if (/<span class="?sig"?>/i.test(htm)) stripes = !stripes
if (/^<div>==.*== *<\/div>$/i.test(htm))
tds[2].style.cssText = 'font-weight:bold; font-size:120%; padding-top:15px'
expandCell(tds[2])
continue
}else if (tds[1].className == 'diff-context') {
tr.className = 'df-context'
if (window.dfParseContext) processHTML(tds[1])
expandCell(tds[1])
stripes = false
continue
}
//from here we're left with normal yellow/green rows with 4 cells
if (!window.dfImproveAdvanced) continue
//check for simple diffs
var oldline = tds[1].innerHTML
var newline = tds[3].innerHTML
if (oldline.length < 90 && oldline.replace(/<.+?>| |\n/g,'') == ''){ //old empty
tds[3].className = 'diff-addedline'
tds[3].innerHTML = newline.replace(/<span class="diffchange">/i,'').replace(/<\/span>/i,'')
processHTML(tds[3])
splitRowsUp(tds[1])
}else if (newline.length < 90 && newline.replace(/<.+?>| |\n/g,'') == ''){ //new empty
tds[1].className = 'df-deletedline'
tds[1].innerHTML = oldline.replace(/<span class="diffchange">/i,'').replace(/<\/span>/i,'')
splitRowsUp(tds[3])
}else if (!/<span/i.test(newline)){ //simple change: something removed
processHTML(tds[1])
expandCell(tds[1], 'df-deletedwords')
}else if (!/<span/i.test(oldline)){ //simple change: something added
processHTML(tds[3])
expandCell(tds[3], 'df-addedwords')
}else{ //complex case
//processHTML(tds[1])
//processHTML(tds[3])
if (window.dfOneColumn){ // separate into different rows anyway
tds[1].firstChild.style.borderTop = '10px solid #FBFBFB'
tds[3].firstChild.style.borderBottom = '10px solid #FBFBFB'
splitRowsUp(tds[1])
}
}
} // for
function expandCell(td, clss){
while (td.nextSibling) tr.removeChild(td.nextSibling)
while (td.previousSibling) tr.removeChild(td.previousSibling)
td.colSpan = 4
if (clss) td.className = clss
}
function splitRowsUp(tdGoesUp){
tds[1].colSpan = 4
tds[3].colSpan = 4
tr.removeChild(tds[2])
tr.removeChild(tds[0])
var trnew = document.createElement('tr')
trnew.className = 'df-change'
trnew.appendChild(tdGoesUp)
tr.parentNode.insertBefore(trnew, tr)
i++ //increment i in for loop
}
} //improveDiff()
function changeLevel(e){
e = e || window.event
var butt = e.target || e.srcElement
currentTable = getClickedTable(e)
var dfLevel = butt.innerHTML
if (dfLevel == '-'){
noImprove = false
//dfNoWikiParsing = true
butt.innerHTML = '='
//restore
improveDiff()
}else if (dfLevel == '='){
// dfNoWikiParsing = false
// butt.innerHTML = 'Ξ'
// }else if (dfLevel == 'Ξ'){
noImprove = true
butt.innerHTML = '-'
replaceTable(requestedPages[currentTable.parentNode.diffURL])
}
}
function createToolbar(){
var dToolbar = document.createElement('div')
//dToolbar.diffTable = currentTable
dToolbar.className = 'df-toolbar'
dToolbar.appendChild(btn(changeLevel, '=', 'Enable/disable diff improvement'))
dToolbar.appendChild(btn(diffJSEngine, 'js', 'Show diffs using JS engine'))
dToolbar.appendChild(btn(highlightDiffs, 'hl', 'Highlight diffs with red border', 'df-but-highlight'))
//references back and forth
dToolbar.tableParent = currentTable.parentNode //reference so we can find table later
return dToolbar
}
function btn(func, htm, tooltip, clss){ //creates <span> button
var bt = document.createElement('span')
bt.innerHTML = htm
bt.onclick = func
bt.title = tooltip
bt.className = 'df-but'
if (clss) bt.className += ' ' + clss
return bt
}
function getClickedTable(e){
e = e || window.event
var button = e.target || e.srcElement
return button.parentNode.tableParent.getElementsByTagName('table')[0]
}
function checkNOBRs(){
var cntAdded = cntRemoved = 0
if (cntRemoved>0 || cntAdded>0){
//hide context rows that are not needed anymore
for (var i=1; i<trs.length-1; i++)
if (tr.className.match(/df-context|df-lineno/)
&& !trs[i-1].className.match(/df-change/) && !trs[i+1].className.match(/df-change/))
tr.style.display='none'
//add notice that 0x0A changes are hidden
var newtd = document.createElement('td')
newtd.colSpan=4; newtd.style.textAlign='center'; newtd.style.fontWeight = 'bold'
var notice = (cntRemoved>0)?' задушено: '+cntRemoved:''
notice += (cntAdded>0)?' вставлено: '+cntAdded:''
newtd.innerHTML = '<span style="border:2px solid orange; padding:2px">Неразрывных пробелов' + notice + '</span>'
trs[1].parentNode.insertBefore(newtd, trs[1])
}
}
function processHTML(elem){
if (dfNoWikiParsing) return
var html = elem.innerHTML
if (html.length == 0) return //elem.innerHTML = ' '
//mark signatures
html = html.replace(/(\[\[[^\[]{4,65})?\d\d:\d\d, \d\d? \S{3,9} 20\d\d \(UTC\)/g, '<span class=sig>$&</span>')
html = html.replace(/\{\{unsigned[^\}]\}\}/i, '<span class=sig>$&</span>')
//[[link]]
html = html.replace(/\[\[([^\]><}{|]+)\|?([^\]><]*)?\]\]/g,
function(wikicode,page,name){
if (/http:\/\//i.test(page)) return wikicode //user made a mistake
if (isImagePage(page) && name) name = page + name //display full image link, including "image:"
if (!name) name = page
if (page.substring(0,1)=='#' || page.substring(0,1)=='/') {
page = curTitle + page //relative link
}
return outputLink(page, name, wikicode)
})
// [http://...]
html = html.replace(/\[(https?:\/\/[^ \]><]*)( [^\]]*)?\]/g, //
function (str,link,name){
var output = '<a href=' + link, title, tip, nameWas = name
if (link.indexOf(wgServer+wgScript) == 0){ //local link
tip = tryDecodeURI(link.substring((wgServer+wgScript).length+1))
if (!name){
name = getTitleFromURL(link) || tip
if (/diff=/.test(link)) name = 'diff: ' + name
else if (tip.match(/action=history/)) name = 'hist: ' + name
else if (tip.match(/oldid=/)) name = 'oldid: ' + name
else name = 'wiki: ' + name
}
} else { //ext link
tip = tryDecodeURI(link.substring(7))
output += ' class="external text"'
if (!name) name = tip
}
if (!nameWas && (name.length > 70)) name = name.substring(0,60) + '… …'
return output + ' title="' + tip + '">[' + name + ']</a>'
})
elem.innerHTML = html
function tryDecodeURI(s){ try{s=decodeURIComponent(s)}catch (e){}; return s }
}
function followNextLink(){ //loads next/prev diff using next/prev diff link
//find old table
var el = currentLink
while (el && el.nodeName != 'TABLE') el = el.parentNode
if (!el || el.className != 'diff') return false
currentTable = el
if (currentTable.parentNode.className != 'df-popup'){ //normal diff page, not a popup
if (window.dfNoAjaxDiff || isImagePage(getTitleFromURL(currentLink.href))) return false
if (el=document.getElementById('t-print')) el.style.display = 'none' //hide "printable" link which becomes outdated
}
//replace diff with new table
loadDiff()
return true
}
function replaceTable(html){
var oldTable = currentTable
//create temp div with new table
var el, tempDiv = document.createElement('div')
tempDiv.innerHTML = html
currentTable = tempDiv.getElementsByTagName('table')[0]
//insert temp div
oldTable.parentNode.insertBefore(tempDiv, oldTable)
//remove old table and (now outdated) prevew below
while ((el=tempDiv.nextSibling) && !/visualClear|df-caption/.test(el.className))
el.parentNode.removeChild(el)
//get rid of temporary DIV
while (el=tempDiv.firstChild)
tempDiv.parentNode.insertBefore(el, tempDiv)
tempDiv.parentNode.removeChild(tempDiv)
}
// *** POPUP ***
function createPopup(lnk){
if (lnk) currentLink = lnk
//unfortunately, image diffs do not work with &action=render
if (isImagePage(getTitleFromURL(currentLink.href)))
return onClickError('Sorry, diffPopup doesn\'t work with diffs to images pages')
//initialize
markLink(currentLink)
addDiffPopupCSS()
if (isIE) hideAllSelectElements()
//create popup
popupCount++
var pop = document.createElement('div')
pop.className = 'df-popup'
pop.style.top = windowScrolled() + 30 + popupCount*10 + 'px'
pop.style.left = 10 + popupCount*10 + 'px'
//load diff
currentTable = document.createElement('table')
pop.appendChild(currentTable)
loadDiff(createPopup2)
}
function createPopup2(){
var pop = currentTable.parentNode
//add bottom and top captions
pop.appendChild(createCaption())
pop.insertBefore(createCaption(), pop.firstChild)
document.body.appendChild(pop)
return true
//if it's too wide
//if (elementWidth(pop) +10 > windowWidth()) scrollBy(elementWidth(pop), 0)
function createCaption(){ //for popup
var dCaption = document.createElement('div')
dCaption.className = 'df-caption'
dCaption.onclick = captionClick
//on special pages
if (wgNamespaceNumber == -1){
dCaption.appendChild( btn(function(e){neighborDiff(e,currentLink, 1)},
'↓', 'Open next diff link on that page'))
dCaption.appendChild( btn(function(e){neighborDiff(e,currentLink, -1)},
'↑', 'Open previous diff link on that page'))
}
//add page title
var sp = document.createElement('span')
var dTitle = currentTable.parentNode.diffTitle
sp.innerHTML = '<b>'+outputLink(dTitle)+'</b>'
+ ' (' + outputLink(dTitle+'?action=history', 'h') + ')'
dCaption.appendChild(sp)
//add toolbar
dCaption.insertBefore(createToolbar(), dCaption.firstChild)
return dCaption
}
}
function captionClick(e){
e = e || window.event
var el = e.target || e.srcElement
if (el && el.className && el.className == 'df-caption') closePopup(el.parentNode)
}
function closePopup(div){
div.style.display = 'none'
purge(div)
div.parentNode.removeChild(div)
popupCount--
if (isIE && (popupCount==0)) hideAllSelectElements(true) //IE select zIndex bug
}
function onKeyUp(e){
e = e || window.event
var lnk
if (e.keyCode == 37) lnk = document.getElementById('differences-prevlink')
else if (e.keyCode == 39) lnk = document.getElementById('differences-nextlink')
if (!lnk) return
currentLink = lnk
if (!followNextLink()) document.location.href = lnk.href
}
function markLink(lnk, isError){ //mark link as 'clicked'. especially useful for watchlist/RC
lnk.style.backgroundColor = isError ? '#FFDDDD' :'#DDDDFF'
}
function hideAllSelectElements(isRestore){ //workaround for IE <select> zIndex bug
var sels = document.getElementsByTagName('select')
for (var i=0; i<sels.length; i++)
sels[i].style.visibility = isRestore ? 'visible' : 'hidden'
}
function neighborDiff(e, lnk, dir){
//close old popup
e = e || window.event
var el = e.target || e.srcElement
closePopup (el.parentNode.parentNode)
//try to find diff in neghbor TR (this happens inside expanded section of enhanced RC/WL)
if ((el=findParentWithTag(lnk,/TR/)) && (el=findNeighborBlock(el)) && (el=findDiffIn(el)))
createPopup(el)
//try to find diff in neghbor LI (on contrib page and simple RC) or TABLE (on enhanced RC and WL)
else if ((el=findParentWithTag(lnk,/LI|TABLE/)) && (el=findNeighborBlock(el)) && (el=findDiffIn(el)))
createPopup(el)
//functions
function findParentWithTag(el, regexp){
while ((el=el.parentNode) && !regexp.test(el.nodeName));
return el
}
function findNeighborBlock(el){ //looks for next/prev block with the same tag
var tag = el.nodeName
do{ el = (dir == -1) ? el.previousSibling : el.nextSibling } while (el && el.nodeName != tag)
return el
}
function findDiffIn(block){
var aa = block.getElementsByTagName('a')
for (var i=0; i<aa.length; i++)
if (/diff=/.test(aa[i].href)) return aa[i]
}
}
// *** JS Diff Engine ***
function diffJSEngine(e){
//create temporary table with original diff
var dTable = getClickedTable(e)
var curTitle = dTable.parentNode.diffTitle
var tmpDiv = document.createElement('div')
tmpDiv.innerHTML = requestedPages[dTable.parentNode.diffURL]
var tempTable = tmpDiv.getElementsByTagName('table')[0]
//create "full comparison" button
var btFull = document.createElement('input'); btFull.type = 'button'
btFull.value = 'Perform full comparison'
btFull.title = 'Compare full revisions, in case MediaWiki diff engine is wrong'
btFull.onclick = diffJSFull
//call and run JS diff engine
if (window.WDiffString) diffJSGo()
else importScriptAndRun('http://en.wikipedia.org/w/index.php?title=User:Cacycle/diff.js', diffJSGo)
function diffJSGo(){
cursorWait()
//var
oldVer = newVer = ''
tds = tempTable.getElementsByTagName('td')
var isContent
for (var i=1; i<tds.length; i++){
td = tds[i]
switch(td.className){
case 'diff-context':
//oldVer += td.innerHTML.replace(/<.+?>/g,'') + '<hr>'
//newVer += td.innerHTML.replace(/<.+?>/g,'') + '<hr>'
/*
if (isContent){
marker = '\x03' + td.innerHTML.replace(/<.+?>/g,'') + '\x04'
oldVer += marker
newVer += marker
isContent = false
}*/
i++
break
case 'diff-lineno':
break // !!!
case 'diff-deletedline':
isContent = true
oldVer += '\n' + td.innerHTML.replace(/<.+?>/g,'')
break
case 'diff-addedline':
isContent = true
newVer += '\n' + td.innerHTML.replace(/<.+?>/g,'')
break
}
}
difDiv = document.createElement('div')
difDiv.style.cssText = 'padding:2px'
difDiv.innerHTML = '<br><br><h3>JS Engine diff</h3><hr style="height:5px" />'
diffJSDisplay()
difDiv.appendChild(document.createElement('hr'))
difDiv.appendChild(btFull)
dTable.parentNode.insertBefore(difDiv, dTable.nextSibling)
}
function diffJSFull(){
btFull.parentNode.removeChild(btFull)
//get versions Ids
var ma, newId, oldId
ma = tempTable.rows[0].cells[0].innerHTML.match(/oldid=(\d+)/)
if (ma) oldId = ma[1]; else { difDiv.innerHTML += '<p class=error>Could not find oldid</p>'; return }
ma = tempTable.rows[0].cells[1].innerHTML.match(/oldid=(\d+)/)
if (ma) newId = ma[1]; else newId = ''
//request versions
difDiv.innerHTML += '<br><br><h3>Full revisions comparison</h3><hr style="height:5px" />'
cursorWait()
oldVer = newVer = null
var url = wgServer + wgScript + '?action=raw&maxage=0&title=' + encodeURIComponent(curTitle)
requestPage(url + '&oldid=' + oldId, function(txt) {
oldVer = txt
if (newVer) diffJSDisplay()
})
requestPage(url + '&oldid=' + newId, function(txt) {
newVer = txt
if (oldVer) diffJSDisplay()
})
}
function diffJSDisplay(){
var txt = WDiffString(oldVer, newVer)
//txt = txt.replace(/\x03.*?\x04/g, '<br><br><hr><br><br>')
if (!window.wikEdFullDiff ) txt = WDiffShortenOutput(txt)
//txt = txt.replace(/¶/g,'<br>')
txt = txt.replace(/&/g,'&')
//txt = txt.replace(/</g,'<').replace(/>/g, '>')
difDiv.innerHTML += txt
cursorNormal()
}
}//diffJSEngine
// *** COMMON ***
function windowScrolled(){
if (self.pageYOffset) // all except Explorer
return self.pageYOffset
else if (document.documentElement && document.documentElement.scrollTop) // Explorer 6 Strict
return document.documentElement.scrollTop
else if (document.body) // all other Explorers
return document.body.scrollTop
}
function getTitleFromURL(url){
var tt = url.match(/title=([^&>"]+)/) //"
if (!tt) return ''
else return decodeURIComponent(tt[1]).replace(/_/g,' ')
}
function isImagePage(page){
return /^image:|\.(jpg|png|svg|gif)$/i.test(page)
}
function outputLink(page, name, tooltip){
if (!name) name = page
if (!tooltip) tooltip = name //.replace(/'/g,'`')
page = page.replace(/&/gi,'&')
var k = page.indexOf('#')
if (k != -1) page = page.substring(0,k) + '#' + guessSectionName(page.substring(k+1))
return '<a href="'+wgServer+wgArticlePath.replace('$1', page)
+'" title="' + tooltip.replace(/"/g,'%22') + '">' + name + '</a>' //'
}
function guessTOCName(txt){ //make header into TOC item, will not work 100%
txt = txt.replace(/^ */,'').replace(/ *$/,'') //trim spaces
txt = txt.replace(/\[\[[^|]+\|([^\]]+)\]\]/g, '$1') //[[foo|bar]] -> bar
txt = txt.replace(/\[\[([^\]]+)\]\]/g, '$1') //[[bar]] -> bar
txt = txt.replace(/<.*?>/g, '').replace(/ /g,'_') //strip tags, spaces -> _
return txt
}
function guessSectionName(txt){ //make header into URL anchor, will not work 100%
//should behave like like Parser.php::guessSectionNameFromWikiText() and Sanitizer.php
txt = guessTOCName(txt)
//... skipping step "HTML entities are turned into their proper characters"
txt = encodeURIComponent(txt) //maybe encodeURI(p1.replace(/\?/g,'%3F').replace(/&/g,'%26'))
txt = txt.replace('%3A', ':').replace(/%([0-9A-F][0-9A-F])/g, '.$1')
return txt
}
function cursorWait(){
if (!window.dfNoWaitCursor) document.body.style.cursor = 'wait'
}
function cursorNormal(){
if (!window.dfNoWaitCursor) document.body.style.cursor = ''
}
// *** CSS/JS ***
var doneDiffTableCSS, doneDiffPopupCSS, highlighDiffCSS
function addDiffTableCSS(){
//table.diff td {padding-left:3px}\
//td.diff-addedline, td.diff-deletedline, td.df-deletedline
if (doneDiffTableCSS) return
addCSS('\
table.diff, td.diff-otitle, td.diff-ntitle {background:#FBFBFB}\
tr.df-lineno td.diff-lineno {padding-top:30px; font-size:80%; font-weight:normal}\
td.df-deletedline {background-color:#FEC}\
table.diff td div {min-height:1em}\
td.df-deletedwords, td.df-addedwords\
{background:white; border:1px dotted gray; padding:2px}\
td.df-deletedwords span.diffchange {background-color:#FFA}\
td.df-addedwords span.diffchange {background-color:#CFC; color:black; font-weight:normal}\
tr.odd td.diff-addedline {background-color:#BEB}\
span.sig {border:1px dotted gray; border-bottom:none; font-family:cursive; font-size:90%}\
div.df-toolbar{float:right; border:1px solid gray}\
span.df-but {cursor:pointer; padding:0 3px 0 3px; margin:0 3px 0 3px; border:1px dotted gray}'
+ (window.dfNoLargerFont ? '' : 'tr.df-change td {font-size:100%; padding-left:3px'))
doneDiffTableCSS = true
}
function addDiffPopupCSS(){
if (doneDiffPopupCSS) return
importCSS('/skins-1.5/common/diff.css')
addCSS('\
div.df-popup{position:absolute; margin-right:15px; border:1px solid #000033; z-index:50; \
font-size:130%; background-color:white}\
div.df-popup div.df-caption{float:none; background:#F0F0FF; font-size:120%;\
border:1px outset gray; padding:2px; cursor:pointer}\
div.df-popup div.df-toolbar {border:none}')
doneDiffPopupCSS = true
}
//div.df-popup table.diff {width:auto}\
function highlightDiffs(e){
if (!highlighDiffCSS)
highlighDiffCSS = addCSS('span.diffchange{border:1px solid red}\
span.df-but-highlight {border:1px inset gray}')
else highlighDiffCSS.disabled = !highlighDiffCSS.disabled
}
function importCSS(url){
if (document.createStyleSheet) var s = document.createStyleSheet(url) //IE
else {
var s = document.createElement('style')
s.type = 'text/css'
s.appendChild (document.createTextNode('@import "' + url + '";'))
document.getElementsByTagName('head')[0].appendChild(s)
}
return s
}
function addCSS(text){ //could use createStyleSheet for IE as well
var s = document.createElement('style')
s.setAttribute('type', 'text/css')
if (s.styleSheet) s.styleSheet.cssText = text //IE
else s.appendChild(document.createTextNode(text))
document.getElementsByTagName('head')[0].appendChild(s)
return s.sheet || s //so we can disable it later, Safari insists on .sheet
}
function importScriptAndRun(url, func) {
var s = document.createElement('script')
s.type = 'text/javascript'
s.src = url + '&action=raw&ctype=text/javascript'
if (isIE) s.onreadystatechange = function(){
if (this.readyState == 'loaded' || this.readyState == 'complete') func()
}
else s.onload = func
document.getElementsByTagName('head')[0].appendChild(s)
}
// *** AJAX ***
function requestPage(url, func){
if (requestedPages[url]) {func(requestedPages[url]); return }
var aj = sajax_init_object()
aj.open('GET', url, true)
aj.onreadystatechange=function() {
if (aj.readyState != 4) return
if (aj.status == 200) {
requestedPages[url] = aj.responseText
func(aj.responseText)
}else func(null)
}
aj.send(null)
}
function loadDiff(func){
currentTable.style.opacity = '0.5'
cursorWait()
var url = currentLink.href + '&action=render&diffonly=yes'
requestPage(url, loadDiff2)
function loadDiff2(html){
replaceTable(html)
//remember diff url and title
currentTable.parentNode.diffURL = url
var td = getElementsByClassName(currentTable, 'td', 'diff-ntitle')[0]
currentTable.parentNode.diffTitle = td ? getTitleFromURL(td.getElementsByTagName('a')[1].href) : '??'
//improve
improveDiff()
if (func) func()
cursorNormal()
}
}
/*
function dispDiffInfo(dTable){
var td = getElementsByClassName(dTable, 'td', 'diff-ntitle')[0]
if (!td) return
// emphasize if this is current revision
//var aa = tds[1].getElementsByTagName('a')[0]
//if (!/oldid=/.test(aa.href)) aa.style.cssText = 'border:2px solid green; padding:0 2px 0 2px'
//get title from (edit) link
dTable.parentNode.diffTitle = getTitleFromURL(td.getElementsByTagName('a')[1].href)
}
*/
//http://javascript.crockford.com/memory/leak.html
function purge(d) {
var a = d.attributes, i, l, n;
if (a) {
l = a.length;
for (i = 0; i < l; i += 1) {
n = a[i].name;
if (typeof d[n] === 'function') {
d[n] = null;
}
}
}
a = d.childNodes;
if (a) {
l = a.length;
for (i = 0; i < l; i += 1) {
purge(d.childNodes[i]);
}
}
}
} //wrapper
addOnloadHook(diffScript.start)