// ************** TYPE AHEAD SCRIPTS ************** //
var typeAheadHiglightColor;
var typeAheadNormalColor;
var objOptions;
var objSrchFld;
var strMasterFldName;
var KEYUP;
var KEYDOWN;
var KEYENTER;
var KEYTAB;
var Hcolor;
var Ncolor;

//Hcolor = "#" + document.forms[0].Hcolor.value;

//Ncolor =  "#" + document.forms[0].Ncolor.value

//typeAheadHiglightColor = Hcolor;
//typeAheadNormalColor = Ncolor;
KEYUP = 38;
KEYDOWN = 40;
KEYENTER = 13;
KEYTAB = 9;

function validateItemNoTypeAhead(){
	var doc = document.forms[0];
	
	strSelfVal = "";
	strPrevOption = "";
	if ( doc.Self ) 
	{
		strSelfVal = trimString ( getFieldValue(doc.Self) ) ; 
	}	
	if ( strSelfVal == "Self"  )
	{
		strPrevOption = "0";
		doc.PaymentType.value = "Credit Card";
	}
	else
	{
		strPrevOption = "";
	}
	if ( strPrevOption== "" ) 
	{
		var strValue = trimString ( getFieldValue(doc.PaymentTypeOptions) ) ; 
		doc.PaymentType.value = strValue;
	}
	if ( checkRequiredFields( doc ) == false )
     	return false
     else
     	return true
}

function cleanSrchText ( strToClean ){
if ( strToClean == '' ) return strToClean
return strToClean.replace( /\*/g , '' ).replace( /\^/g , '' ).replace( /\(/g , '' ).replace( /\)/g , '' ).replace(/\./g , '' ).replace(/\s\s/g,'').replace(/\\/g , '' ).replace(/\[/g , '' ).replace(/\]/g  , '' ).replace( /\//g , '' )
}

function displayTypeAheadDiv ( flag ){
	if ( flag )
	{
		objOptions.style.display = 'block';
	}
	else
	{
		objOptions.innerHTML = ''
		objOptions.style.display = 'none'
	}
}

function entrySelected(strSelectedText){
		objSrchFld.value = strSelectedText
		displayTypeAheadDiv ( false )
		if ( objSrchFld.name == 'TopXPSearchField' )
		{
			var objFld = document.getElementById ( 'XPSrchQuery' )
			objFld.value = strSelectedText
//			var retvalue = ShowValuePicker('Buyer','frmBuyerSingleValuePicker',ContactDBPath,'BuyerInfo','vBuyerLookupByLastName','0~^1~^2~^3','6','','','')
		}
		else if ( objSrchFld.name == 'TopXPSearchField' || objSrchFld.name == 'XPSrchQuery' )
		{
			if ( objSrchFld.name == 'TopXPSearchField' ) document.forms[0].XPSrchQuery.value = objSrchFld.value
//			doXPSearch();
		}
		else if ( objSrchFld.name.match(/^item/i) )
		{
			objSrchFld.value = objSrchFld.value.split ( ' - ' )[0]
			getProductDetailsByItemNo( objSrchFld.name.replace( /itemNo/i , '' ) );
		}
		return true
}

function getSelectedSpanNum (div)
{
	var count = -1;
	var spans = div.getElementsByTagName("SPAN");
	  	if (spans) 
	{
		for (var i = 0; i < spans.length; i++) 
		{
			count++;
			if (spans[i].style.backgroundColor != div.style.backgroundColor)
			{
			return count;
			}
		}
	}
return -1;
}

function setSelectedSpan (div, spanNum )
{
	var thisSpan;
	var spans = div.getElementsByTagName("SPAN");
	
	if (spans) 
	{
		for (var i = 0; i < spans.length; i++) 
		{
    			if (i == spanNum) 
			{	
				thisSpan = spans[i];				
				thisSpan.style.backgroundColor = typeAheadHiglightColor
			} 
			else
			{
				var thisUnSelSpan = spans[i];
			thisUnSelSpan.style.backgroundColor = typeAheadNormalColor	
			}
		}
	}	
return thisSpan;
}

function keyPressHandler(strSrchFldName,key){
objSrchFld = document.getElementById ( strSrchFldName )
var selNum = getSelectedSpanNum(objOptions);
var selSpan = setSelectedSpan(objOptions, selNum);

if ( !key || key == '' )
{
	if  ( window.event ) key = window.event.keyCode
	else key = event.which
}
	if ( ( key == KEYENTER ) || ( key == KEYTAB ) )
	{
	if ( selSpan )
		{
		entrySelected(selSpan.firstChild.nodeValue );
		}
	}
	else
	{
		if ( key == KEYUP )
			{
				if ( selNum == -1 )
				{
				var spans = objOptions.getElementsByTagName("SPAN");
				selNum = spans.length
				}
			selSpan = setSelectedSpan ( objOptions, selNum - 1 );
			}
		
		if ( key == KEYDOWN )
			{			
			selSpan = setSelectedSpan ( objOptions, selNum + 1 );
			}
	}
}

function showCreateDiv(divObj,posObj){

	var x = posObj.offsetLeft;
	var y = posObj.offsetTop + posObj.offsetHeight;
	var parent = posObj;
	while (parent.offsetParent) 
	   {
     	 parent = parent.offsetParent;
	      x += parent.offsetLeft;
     	 y += parent.offsetTop;
	    }
	divObj.style.display = 'block'
	divObj.style.position = "absolute";
	divObj.style.left = x+ "px";
	divObj.style.top = y + "px";
	divObj.style.zIndex=1000;
}

function returnEntries(strSrchFldName,key) {
try
{
var KEYHOME = 36;
var KEYEND = 35;
var KEYLEFT = 37;
var KEYRIGHT = 39;
var KEYSPACE = 32;
//----------- Below keys handled in keyPressHandler function
if ( ( key == KEYENTER ) || ( key == KEYTAB ) || ( key == KEYUP ) || ( key == KEYDOWN ) || ( key == KEYHOME ) || ( key == KEYEND ) || ( key == KEYLEFT ) || ( key == KEYRIGHT ) || ( key == KEYSPACE ) || ( key == 0 ) ) 
{
	return ''
}

var doc = document.forms[0];

//----------- Get handle to various field objects used in type ahead
objSrchFld = document.getElementById ( strSrchFldName )

if ( strSrchFldName == 'TopXPSearchField' )
{
var objLastLength = document.getElementById ( 'XPSrchQueryLL' )
var objLastIndex = document.getElementById ( 'XPSrchQueryLI' )
var objMasterList = document.getElementById ( 'XPSrchQueryML' )
}
else
{
var objLastLength = document.getElementById ( strSrchFldName + 'LL' )
var objLastIndex = document.getElementById ( strSrchFldName + 'LI' )
var objMasterList = document.getElementById ( strSrchFldName + 'ML' )
}


var strEntered = objSrchFld.value
var intCurLength = parseInt ( strEntered.toString().length , 10 )

//----------- Do Type ahead only when..
if ( intCurLength < 1  )
{
	objLastLength.value = ''
	objLastIndex.value = ''
	displayTypeAheadDiv ( false )
	return ''
}

//----- Define search criteria
var strRegExp = eval ( "/^" + cleanSrchText ( strEntered ) + "/i" )

//----- Get master list to search in
if ( strSrchFldName.match ( /^itemno/i ) )
{
objMasterList.value = objMasterList.value.replace ( /~\^/g , ' - ' )
}
var strVals = objMasterList.value
var arrVals = strVals.split('; ')
arrVals = getUniqueValues ( arrVals )

//----- get last search results if any
var intLastIndex = parseInt ( objLastIndex.value , 10 )
var intLastLength = parseInt ( objLastLength.value , 10 )

objLastLength.value = intCurLength.toString()

var strNewIndex = ''
var arrValsDisp = new Array()
var intArrIdx = 0

//----- Define style of entries
var strOptionSPAN = '<span id=lookupSpan style="background-color:' + typeAheadNormalColor + ';width:100%;cursor:pointer;clear:both;float:left;font-family:Verdana;font-size:10px;line-height: 15px;"  onMouseOver="javascript:setSelectedSpan(objOptions,-1);this.style.backgroundColor=\'' + typeAheadHiglightColor+'\'" onMouseOut="javascript:this.style.backgroundColor=\'' + typeAheadNormalColor + '\'" onclick="javascript:if(entrySelected(this.firstChild.nodeValue))doXPSearch();;">'
//----- Search and get the entries
if ( objLastIndex.value == '' ) //first search
{	
	for ( intCount = 0 ; intCount < arrVals.length ; intCount++ )
	{
	if ( cleanSrchText ( arrVals[intCount] ) .match( strRegExp ) )
	{
		if ( strNewIndex == '' ) strNewIndex = intCount.toString()
		arrValsDisp[intArrIdx] = strOptionSPAN + arrVals[intCount]
		intArrIdx++
		}
	}
}
else if ( intLastLength > intCurLength ) //backspace pressed
	{
		//Search index--
		var continueLoop = true
		var match = false
		if ( intLastIndex > 0 )
		{
			for ( intCount = intLastIndex -1; ( intCount >= 0 && continueLoop ) ; intCount-- )
			{
				if ( cleanSrchText ( arrVals[intCount] ) .match( strRegExp ) )
				{
				match = true
				strNewIndex = intCount.toString()
				arrValsDisp[intArrIdx] = strOptionSPAN + arrVals[intCount]
				intArrIdx++
				}
				else
				{
				if ( match )
					{
					arrValsDisp.reverse() //order to be reversed as we searched in index-- order
					continueLoop = false
					}
				}
			}
		}
		if ( strNewIndex == '' ) strNewIndex = intLastIndex
		
		//Search index++
		var continueLoop = true
		var match = false
		for ( intCount = intLastIndex ; ( intCount < arrVals.length && continueLoop ) ; intCount++ )
		{
			if ( cleanSrchText ( arrVals[intCount] ) .match( strRegExp ) )
			{
			match = true
			arrValsDisp[intArrIdx] = strOptionSPAN + arrVals[intCount]
			intArrIdx++
			}
			else
			{
			if ( match ) continueLoop = false
			}
			
		}
	}
else if ( intLastLength < intCurLength ) //new chars added
	{
		var continueLoop = true
		var match = false
		for ( intCount = intLastIndex ; ( intCount < arrVals.length && continueLoop ); intCount++ )
		{
			if ( cleanSrchText ( arrVals[intCount] ) .match( strRegExp ) )
			{
			if ( strNewIndex == '' ) strNewIndex = intCount.toString()
			arrValsDisp[intArrIdx] = strOptionSPAN + arrVals[intCount]
			intArrIdx++
			}
			else
			{
			if ( match ) continueLoop = false
			}
		}
	}
else if ( intLastLength == intCurLength ) return ''

	//----- Display results
	if ( strNewIndex.toString() == '' )
	{
		objLastLength.value = ''
		objLastIndex.value = ''
		displayTypeAheadDiv ( false )
	}
	else
	{
		objLastIndex.value = strNewIndex
		arrValsDisp[0] = arrValsDisp[0].replace ( 'background-color:'+typeAheadNormalColor , 'background-color:' + typeAheadHiglightColor)
		if ( strSrchFldName == 'XPSrchQuery' )
			objOptions.style.width = '200px';
		else if ( strSrchFldName == 'TopXPSearchField' )
			objOptions.style.width = '500px';
		else
			objOptions.style.width = '500px';
		//else if( strSrchFldName == 'Parish' ) objOptions.style.width = '450px';
		//else if( strSrchFldName.match(/^itemno/i)){
		//	objOptions.style.width = '350px';
		//	objLastLength.value = ''
		//	objLastIndex.value = ''
		//	}
		objOptions.innerHTML = arrValsDisp.join('</span>')
		showCreateDiv ( objOptions , objSrchFld )
		
	}
}
catch(e)
{
alert(e);
}
}
// ************** END OF TYPE AHEAD SCRIPTS ************** //


// To remove duplicate entries in an array
function getUniqueValues(mixedData)
{
	var uniqueValuesList=new Array()	
	mixedData = mixedData.sort();
	idx = 0;
	prevValue = mixedData[0];
	currValue = mixedData[0];
	for (i=0; i<mixedData.length; i++)
	{ 
		currValue = mixedData[i];
		if (currValue != prevValue)
		{
			idx++;
			count=idx	 
		}
		
	uniqueValuesList[idx] = currValue;
	prevValue = currValue;
	}
	return uniqueValuesList
}