sugnew.js

很好的传感器学习资料

var autos = new Array();// array of autoforms
var tid = 0; // timer id
var httpBaseURL;
var startswithServlet;
var resultCache=new Object(); // This is a cache of results from the server...
var keycode=0; //holds the last keycode pressed
var req = null;
var enter = false;
var textkeyword="";
var currfid;

function AutoForm(fid,aid,inputfield,pagetype)
{
this.id = fid;
this.autoid = aid;
var thisform = document.getElementById(fid);
this.inputfield = inputfield;
this.pagetype=pagetype;
this.ftype="2";
this.rows = 0;
this.rowDivList = null;
this.highlightedSuggestionIndex = -1;
this.highlightedSuggestionDiv= null;
this.topicArray = new Array(10); 
this.countArray = new Array(10);
this.cursorUpDownPressed = false;
this.currentInputFieldValue=""; 
this.partialquery="";
this.currTopic = ""; 
this.currCount = ""; 
this.keycode = 0;
if (this.inputfield.addEventListener)
this.inputfield.addEventListener("keypress", KeyPress, true);
thisform.onsubmit= returnFalse;
if(pagetype=="1"){
document.getElementById(aid).style.margin = (!window.XMLHttpRequest)?"-5px 0px 0px 0px":"-5px 0px 0px 0px";
}else if(pagetype=="2") {
document.getElementById(aid).style.margin = (!window.XMLHttpRequest)?"-200px 0px 0px 80px":"-200px 0px 0px 80px";
document.getElementById(aid).style.width = "289px";
}
}
function returnFalse() {return false;}
function returnTrue(){return true;}
function InitForm(fid,aid,inputfield,pagetype)
{
var autoform = new AutoForm(fid,aid,document.getElementById(inputfield),pagetype);
autos[fid] = autoform;
}
function BodyLoad(HttpBaseURL, StartsWithServlet,s, fid,setFocus)
{
	return 0;
httpBaseURL = HttpBaseURL;
startswithServlet = StartsWithServlet;
currfid=fid;
    var queryfield = document.getElementById(s);
    //Don't set focus for sitePages - check the value of boolean setFocus
    if ((queryfield && queryfield.value=="") && ((setFocus != null && setFocus == true) || setFocus == null)){   
        queryfield.focus(); // focus on first inputfield if available and empty
    }
    textkeyword=queryfield.value;
    setTimeout("everytenms()",10);
}
function KeyDown(fid,evt)
{
    var ctrl = 0;
    if(!evt && window.event)
{
        evt=window.event;
    }
    
    if(document.layers)
        ctrl = (evt.modifiers & Event.CONTROL_MASK) > 0;
    else
        ctrl = evt.ctrlKey;
        
    if (tid)
return;

keycode = evt.keyCode;
    if (ctrl)
       return true;
    if (isCtrlKey(keycode))
        return true;
return UpDown(fid,keycode);
}
function KeyPress(event)
{
if (event.which == 0 && !isShowKey(keycode)) {
if (event.preventDefault)
event.preventDefault();
return false;
}
}
UpDown = function(fid,keycode)
{
var inputfield = autos[fid].inputfield;
var inputfieldValue = inputfield.value;
autos[fid].keycode = keycode;
if(handleCursorUpDownEnter(keycode,fid,inputfieldValue) || isShowKey(keycode))
return true;
else
return false;
}
// returns false if cursor up / cursor down or enter pressed...
function handleCursorUpDownEnter(eventCode,fid,inputfieldValue)
{
var highlightedSuggestionIndex = autos[fid].highlightedSuggestionIndex;
var autodiv = document.getElementById(autos[fid].autoid);
    if (eventCode == 33) // page up
{
if (autodiv.style.visibility=="visible")
{
setStyleForElement(autos[fid].highlightedSuggestionDiv,"1");
autos[fid].highlightedSuggestionIndex = 0;
highlightNewValue(fid,0);
}
return false;
}
else if (eventCode == 34) // page down
{
if (autodiv.style.visibility=="visible")
{
setStyleForElement(autos[fid].highlightedSuggestionDiv,"1");
autos[fid].highlightedSuggestionIndex = autos[fid].rows-1;
highlightNewValue(fid,autos[fid].rows-1);
}
return false;
}
else if(eventCode==40)
{
if (autodiv.style.visibility=="visible")
{
highlightNewValue(fid,highlightedSuggestionIndex+1);
return false;
}
}
else if(eventCode==38)
{
if (autodiv.style.visibility=="visible")
{
highlightNewValue(fid,highlightedSuggestionIndex-1);
return false;
}
}
else if(eventCode==13||eventCode==3)
{
if (eventCode==13) {
if(autos[fid].currTopic!=""){
autos[fid].inputfield.value=autos[fid].currTopic;
textkeyword=autos[fid].currTopic;
}
document.getElementById(autos[fid].autoid).style.visibility="hidden";
return submitForm(fid);
}
return false;
}
if (keycode != 0)
ForEachKeyPressed(inputfieldValue,fid);
return true;
}
// Called when cursor up/down pressed... selects new entry in autodiv...
function highlightNewValue(fid,C)
{
autos[fid].currentInputFieldValue= autos[fid].partialquery;
//autos[fid].inputfield.value=autos[fid].partialquery;
if(!autos[fid].rowDivList)
{
return;
}
ShowDiv(fid);
if(C>=autos[fid].rows)
{
        if (autos[fid].dir=="up")
        {
            C=autos[fid].rows;
        }
        else
        {
            C=autos[fid].rows-1
            autos[fid].highlightedSuggestionDiv=autos[fid].rowDivList.item(C);
        }
    }
if(C<0)
{
        if (autos[fid].dir=="up")
        {
            C=0;
            autos[fid].highlightedSuggestionDiv=autos[fid].rowDivList.item(C);
        }
        else
        {
            C=-1;
            autos[fid].highlightedSuggestionIndex=-1
            autos[fid].highlightedSuggestionDiv= null;
            setStyleForElement(autos[fid].rowDivList.item(0),"1");
        }
    }
 if(autos[fid].highlightedSuggestionIndex!=-1&&C!=autos[fid].highlightedSuggestionIndex)
 {
setStyleForElement(autos[fid].highlightedSuggestionDiv,"1");
autos[fid].highlightedSuggestionIndex=-1
}

if (C>=0)
{
autos[fid].highlightedSuggestionIndex=C;
autos[fid].highlightedSuggestionDiv=autos[fid].rowDivList.item(C);
setStyleForElement(autos[fid].highlightedSuggestionDiv,"0");
currentInputFieldValue=autos[fid].partialquery;
var q = valueOfAutodiv(autos[fid].highlightedSuggestionDiv);
autos[fid].currTopic = autos[fid].topicArray[C];
autos[fid].currCount = autos[fid].countArray[C];
}
else
{
autos[fid].currTopic ="";
autos[fid].currCount ="";
}
}
// This function gets called for every keypress I make...
function ForEachKeyPressed(partialquery,fid)
{
var localInputField = autos[fid].inputfield;
var autoid = autos[fid].autoid;
var autodiv = document.getElementById(autoid);
var highlightedSuggestionIndex= autos[fid].highlightedSuggestionIndex;
    // This becomes the rows in our suggestion list...
var J=autodiv.getElementsByTagName("LI");

// # of rows in list...
var rows = J.length;
autos[fid].rows = rows;
autos[fid].rowDivList=J;
autos[fid].partialquery=partialquery;
autos[fid].currTopic = ""; //reset
autos[fid].currCount = ""; //reset
var s= localInputField.value;
if(s=="" || rows==0 || keycode==27 || s.search(/\S/)==-1 || (autodiv.style.visibility=="hidden" && ( keycode==35 || keycode==36))) //esc
HideDiv(fid);
for(var f=0; f<rows; f++)
{
setStyleForElement(J.item(f),"1");
}
var highlightedSuggestionDiv = autos[fid].highlightedSuggestionDiv;
var noncharkey = false;
switch(autos[fid].keycode)
{
case 8: // back space
case 33: //page up
case 34: // page down
case 35: // end
case 36: // home
case 37: // left arrow
case 39: // right arrow
case 45: //????
case 46: // delete
noncharkey=true;
break;
default:
// regular keypress ...
break
}
if(!noncharkey && highlightedSuggestionDiv)
{
setStyleForElement(highlightedSuggestionDiv,"0");
var z;
z=valueOfAutodiv(highlightedSuggestionDiv);
if(z!=localInputField.value)
{
if(localInputField.value!=partialquery)
{
return;
}
}
}
else
{
highlightedSuggestionIndex=-1;
    }
}
// Return null if i undefined...
// otherwise return value of span 3...
function valueOfAutodiv(i)
{
if(!i)
{
return null;
}
return findSpanValueForClass(i,"5")
}
// Find span value with className = dc...
function findSpanValueForClass(i,dc){
var ga=i.getElementsByTagName("span");
if(ga){
for(var f=0; f<ga.length; ++f){
if(ga[f].className==dc){
var value=ga[f].innerHTML;
if(value=="&nbsp;") {
return"";
} else{
var z=stripCRFromString(value);
return z
}
}
}
}else{
return""
}
}
// strip CR from string...
function stripCRFromString(va)
{
for(var f=0,oa="",zb="\n\r"; f<va.length; f++)
{
if (zb.indexOf(va.charAt(f))==-1)
oa+=va.charAt(f);
else
oa+=" ";
}
return oa
}

function SendQuery(fid)
{
tid =0;
var autoid = autos[fid].autoid;
var s = autos[fid].inputfield;
var query = s.value;
if(query.length!=0 && query.search(/\S/)!=-1)
{

var result=resultCache[autos[fid].ftype+query];
if(result)
{
// Found in our cache...

ShowDiv(autoid);
startswithResult(query,result[0],result[1],fid);
}
else
{
var url= httpBaseURL+startswithServlet+"?w=" + query +"&c="+document.getElementById("scate").value;
//alert(url);
if (req)
req.abort();
req = (!window.XMLHttpRequest)? (window.ActiveXObject ? (new ActiveXObject("Microsoft.XMLHTTP")):""):(new XMLHttpRequest());
req.open("GET", url, true);
req.setRequestHeader('Content-Type', 'application/x-www-form-urlencoded');
req.onreadystatechange = new Function("Process('" + fid + "')");
req.send(null);
}
}
else
HideDiv(fid);
}
function Process(fid)
{

if (req.readyState == 4)
{
try // ff throws an exception sometimes
{

if (req.status == 200)
{
if(req.responseText=="")
HideDiv(fid);
else
{
//alert(req.responseText);
eval('startswithResult(' + req.responseText + '"' + fid + '");');
}
}
}
catch(e){}
}
}
function ShowDiv(fid)
{
if (autos[fid])
{
document.getElementById(autos[fid].autoid).style.visibility="visible";
showHideSelects(fid,false);
}
}

function HideDiv(fid)