jQuery.autocomplete=function(input,options){
var me=this
var $input=$(input).attr("autocomplete","off")
if(options.inputClass){
$input.addClass(options.inputClass)}
var results=document.createElement("div")
var $results=$(results).hide().addClass(options.resultsClass).css("position","absolute")
if(options.width>0){
$results.css("width",options.width)}
$("body").append(results)
input.autocompleter=me
var timeout=null
var prev=""
var active=-1
var cache={}
var keyb=false
var hasFocus=false
var lastKeyPressCode=null
var mouseDownOnSelect=false
var hidingResults=false
function flushCache(){
cache={}
cache.data={}
cache.length=0}
flushCache()
if(options.data !=null){
var sFirstChar="",stMatchSets={},row=[]
if(typeof options.url !="string"){
options.cacheLength=1}
for(var i=0;i<options.data.length;i++){
row=((typeof options.data[i]=="string")? [options.data[i]] : options.data[i])
if(row[0].length>0){
sFirstChar=row[0].substring(0,1).toLowerCase()
if(!stMatchSets[sFirstChar])stMatchSets[sFirstChar]=[]
stMatchSets[sFirstChar].push(row)}}
for(var k in stMatchSets){
options.cacheLength++
addToCache(k,stMatchSets[k])}}
$input
.keydown(function(e){
lastKeyPressCode=e.keyCode
switch(e.keyCode){
case 38:
e.preventDefault()
moveSelect(-1)
break
case 40:
e.preventDefault()
moveSelect(1)
break
case 9:
case 13:
if(selectCurrent()){
$input.get(0).blur()
e.preventDefault()}
break
default:
active=-1
if(timeout)clearTimeout(timeout)
timeout=setTimeout(function(){onChange();},options.delay)
break}
})
.focus(function(){
hasFocus=true
})
.blur(function(){
hasFocus=false
if(!mouseDownOnSelect){
hideResults()}
})
hideResultsNow()
function onChange(){
if(lastKeyPressCode==46 ||(lastKeyPressCode>8&&lastKeyPressCode<32))return $results.hide()
var v=$input.val()
if(v==prev)return
prev=v
if(v.length>=options.minChars){
$input.addClass(options.loadingClass)
requestData(v)
}else{
$input.removeClass(options.loadingClass)
$results.hide()}}
function moveSelect(step){
var lis=$("li",results)
if(!lis)return
active+=step
if(active<0){
active=0
}else if(active>=lis.size()){
active=lis.size()-1}
lis.removeClass("ac_over")
$(lis[active]).addClass("ac_over")}
function selectCurrent(){
var li=$("li.ac_over",results)[0]
if(!li){
var $li=$("li",results)
if(options.selectOnly){
if($li.length==1)li=$li[0]
}else if(options.selectFirst){
li=$li[0]}}
if(li){
selectItem(li)
return true
}else{
return false}}
function selectItem(li){
if(!li){
li=document.createElement("li")
li.extra=[]
li.selectValue=""}
var v=$.trim(li.selectValue ? li.selectValue : li.innerHTML)
input.lastSelected=v
prev=v
$results.html("")
$input.val(v)
hideResultsNow()
if(options.onItemSelect){
setTimeout(function(){options.onItemSelect(li)},1)}}
function createSelection(start,end){
var field=$input.get(0)
if(field.createTextRange){
var selRange=field.createTextRange()
selRange.collapse(true)
selRange.moveStart("character",start)
selRange.moveEnd("character",end)
selRange.select()
}else if(field.setSelectionRange){
field.setSelectionRange(start,end)
}else{
if(field.selectionStart){
field.selectionStart=start
field.selectionEnd=end}}
field.focus()}
function autoFill(sValue){
if(lastKeyPressCode !=8){
$input.val($input.val()+sValue.substring(prev.length))
createSelection(prev.length,sValue.length)}}
function showResults(){
var pos=findPos(input)
var iWidth=(options.width>0)? options.width : $input.width()
$results.css({
width: parseInt(iWidth)+"px",
top:(pos.y+input.offsetHeight)+"px",
left: pos.x+"px"
}).show()}
function hideResults(){
if(timeout)clearTimeout(timeout)
timeout=setTimeout(hideResultsNow,200)}
function hideResultsNow(){
if(hidingResults){
return}
hidingResults=true
if(timeout){
clearTimeout(timeout)}
var v=$input.removeClass(options.loadingClass).val()
if($results.is(":visible")){
$results.hide()}
if(options.mustMatch){
if(!input.lastSelected || input.lastSelected !=v){
selectItem(null)}}
hidingResults=false}
function receiveData(q,data){
if(data){
$input.removeClass(options.loadingClass)
results.innerHTML=""
if(!hasFocus || data.length==0)return hideResultsNow()
if($.browser.msie){
$results.append(document.createElement('iframe'))}
results.appendChild(dataToDom(data))
if(options.autoFill&&($input.val().toLowerCase()==q.toLowerCase()))autoFill(data[0][0])
showResults()
}else{
hideResultsNow()}}
function parseData(data){
if(!data)return null
var parsed=[]
var rows=data.split(options.lineSeparator)
for(var i=0;i<rows.length;i++){
var row=$.trim(rows[i])
if(row){
parsed[parsed.length]=row.split(options.cellSeparator)}}
return parsed}
function dataToDom(data){
var ul=document.createElement("ul")
var num=data.length
if((options.maxItemsToShow>0)&&(options.maxItemsToShow<num))num=options.maxItemsToShow
for(var i=0;i<num;i++){
var row=data[i]
if(!row)continue
var li=document.createElement("li")
if(options.formatItem){
li.innerHTML=options.formatItem(row,i,num)
li.selectValue=row[0]
}else{
li.innerHTML=row[0]
li.selectValue=row[0]}
var extra=null
if(row.length>1){
extra=[]
for(var j=1;j<row.length;j++){
extra[extra.length]=row[j]}}
li.extra=extra
ul.appendChild(li)
$(li).hover(
function(){$("li",ul).removeClass("ac_over");$(this).addClass("ac_over");active=$("li",ul).indexOf($(this).get(0));},
function(){$(this).removeClass("ac_over");}
).click(function(e){
e.preventDefault()
e.stopPropagation()
selectItem(this)
})}
$(ul).mousedown(function(){
mouseDownOnSelect=true
}).mouseup(function(){
mouseDownOnSelect=false
})
return ul}
function requestData(q){
if(!options.matchCase)q=q.toLowerCase()
var data=options.cacheLength ? loadFromCache(q): null
if(data){
receiveData(q,data)
}else if((typeof options.url=="string")&&(options.url.length>0)){
$.get(makeUrl(q),function(data){
data=parseData(data)
addToCache(q,data)
receiveData(q,data)
})
}else{
$input.removeClass(options.loadingClass)}}
function makeUrl(q){
var sep=options.url.indexOf('?')==-1 ? '?' : '&'
var url=options.url+sep+"q="+encodeURI(q)
for(var i in options.extraParams){
url+="&"+i+"="+encodeURI(options.extraParams[i])}
return url}
function loadFromCache(q){
if(!q)return null
if(cache.data[q])return cache.data[q]
if(options.matchSubset){
for(var i=q.length-1;i>=options.minChars;i--){
var qs=q.substr(0,i)
var c=cache.data[qs]
if(c){
var csub=[]
for(var j=0;j<c.length;j++){
var x=c[j]
var x0=x[0]
if(matchSubset(x0,q)){
csub[csub.length]=x}}
return csub}}}
return null}
function matchSubset(s,sub){
if(!options.matchCase)s=s.toLowerCase()
var i=s.indexOf(sub)
if(i==-1)return false
return i==0 || options.matchContains}
this.flushCache=function(){
flushCache()}
this.setExtraParams=function(p){
options.extraParams=p}
this.findValue=function(){
var q=$input.val()
if(!options.matchCase)q=q.toLowerCase()
var data=options.cacheLength ? loadFromCache(q): null
if(data){
findValueCallback(q,data)
}else if((typeof options.url=="string")&&(options.url.length>0)){
$.get(makeUrl(q),function(data){
data=parseData(data)
addToCache(q,data)
findValueCallback(q,data)
})
}else{
findValueCallback(q,null)}}
function findValueCallback(q,data){
if(data)$input.removeClass(options.loadingClass)
var num=(data)? data.length : 0
var li=null
for(var i=0;i<num;i++){
var row=data[i]
if(row[0].toLowerCase()==q.toLowerCase()){
li=document.createElement("li")
if(options.formatItem){
li.innerHTML=options.formatItem(row,i,num)
li.selectValue=row[0]
}else{
li.innerHTML=row[0]
li.selectValue=row[0]}
var extra=null
if(row.length>1){
extra=[]
for(var j=1;j<row.length;j++){
extra[extra.length]=row[j]}}
li.extra=extra}}
if(options.onFindValue)setTimeout(function(){options.onFindValue(li)},1)}
function addToCache(q,data){
if(!data || !q || !options.cacheLength)return
if(!cache.length || cache.length>options.cacheLength){
flushCache()
cache.length++
}else if(!cache[q]){
cache.length++}
cache.data[q]=data}
function findPos(obj){
var curleft=obj.offsetLeft || 0
var curtop=obj.offsetTop || 0
while(obj=obj.offsetParent){
curleft+=obj.offsetLeft
curtop+=obj.offsetTop}
return{x:curleft,y:curtop}}}
jQuery.fn.autocomplete=function(url,options,data){
options=options ||{}
options.url=url
options.data=((typeof data=="object")&&(data.constructor==Array))? data : null
options=$.extend({
inputClass: "ac_input",
resultsClass: "ac_results",
lineSeparator: "\n",
cellSeparator: "|",
minChars: 1,
delay: 400,
matchCase: 0,
matchSubset: 1,
matchContains: 0,
cacheLength: 1,
mustMatch: 0,
extraParams:{},
loadingClass: "ac_loading",
selectFirst: false,
selectOnly: false,
maxItemsToShow:-1,
autoFill: false,
width: 0
},options)
options.width=parseInt(options.width,10)
this.each(function(){
var input=this
new jQuery.autocomplete(input,options)
})
return this}
jQuery.fn.autocompleteArray=function(data,options){
return this.autocomplete(null,options,data)}
jQuery.fn.indexOf=function(e){
for(var i=0;i<this.length;i++){
if(this[i]==e)return i}
return-1}