/************************************************************************
Validation funcs written by arv@10aug2k3
************************************************************************

--------GUIDELINES FOR USAGE OF FUNCTIONS ----------------------
set the id of form elements as directed here and 
call the CheckEntireForm(objForm) in the form submit evet
i.e. <form onSubmit = "return CheckEntireForm(MyFormName)" ... >

RQ-Y/N REQUIRED(SHOULD NOT BE BLANK)
NM-Y/N NAME
NU-Y/N NUMERIC
FN-Y/N FLOAT NUMERIC
NUR-Y/N NUMERIC RANGE
NURMX-n MAX NUMERIC RANGE
NURMN-n MIN NUMERIC RANGE
NRC-Y/N CHECK NUMEIC RANGE
PH-Y/N PHONE
EM-Y/N EMAIL
CMX-n CONTROL HAS n AS MAX RANGE
CMN-n CONTROL HAS n AS MIN RANGE
CRC - Y/N CHECK CONTROL LENGTH RANGE
LBC-Y/N- CONTROL IS A LIST BOX CONTROL AND CHECK THAT A SELECTON IS MADE
MSS - XYZ... MESSAGE TO THROW IF VALIDATION FAILED
SPA - Y/N space is not allowed
FUP - Y/N if a file upload comp
TFP - P/C p=picture ; c = cv

A SAMPLE ID IS SHOWN HERE
RQ-Y|NU-Y|CMN-3|CMX-8|MSS-EMPLYOEE_INCOME_LEVEL
this field is a required field, it can only accept
numeric data and can contain only 3 to 8 char length number
it is EMPLYOEE INCOME LEVEL (notice underscore as space is not allowwd)
***********************************************************************************
*/


//Global constants for message throwing
var MESS_BLANK = new String("Please specify a value for the field: ")
var MESS_RANGE = new String("Please specify a value in the valid range for the field: ")
var MESS_NUMERIC = new String("Please specify a valid numeric value for the field: ")
var MESS_NAME = new String("Please specify a valid name for the field: ")
var MESS_NUMERIC_RANGE = new String("Please specify a numeric value in the given range for the field: ")
var MESS_PHONE = new String("Please specify a valid phone number in the format xxx-xxx-xxxxxxxx for the field: ")
var MESS_EMAIL = new String("Please specify a valid Email address in the form of foo@bar.com for the field: ")
var MESS_CHAR_DATA = new String("Please specify a value with the specified min/max length for the field: ")
var MESS_LIST = new String("Please select an option from the list : ")
var MESS_START =new String("PLEASE FILL THIS FORM AS SPECIFIED HERE :\n--------------------------------------------------------------------")
var MESS_FUP=new String("The file you have selected for upload is not a valid file for the field: ")
var MESS_STRICTNUMERIC = new String("Please enter a whole number for the field : ")
var MESS_PASSWORD = new String("Please enter a valid value (Alphabets,numbers, _ are allowed) for the field :")
//x



//Function to search  through an entire select list and highlight a specific option value based on passed arguement ObjList = Name of select list
function SelectListOption(ObjList,StrOptionValue)
{
	for(i=0;i<ObjList.length;i++)
	{
		if (ObjList.options[i].text==StrOptionValue)
		{
			ObjList.options[i].selected="1";
			return true;
		}
	}
	return false;		
}

//Function to check / uncheck checkbox form control
function SelectCheckBox(ObjCheckBox,boolCheck)
{
	if(boolCheck){
		ObjCheckBox.checked=true;
		return true;
		}
	else
	{
		ObjCheckBox.checked=false;
		return false;
	}
}

//get ascii char code of arg
function GetAsciiCode(argChar)
{
	var s = new String(argChar);
	return parseInt(s.charCodeAt(0));
}

//check if arg is pure numeric and a +ive whole number 
function IsNumeric(sText)
{
   var ValidChars = "0123456789.";
   var IsNumber=true;
   var Char;

 
   for (i = 0; i < sText.length && IsNumber == true; i++) 
      { 
      Char = sText.charAt(i); 
      if (ValidChars.indexOf(Char) == -1) 
         {
         IsNumber = false;
         }
      }
   return IsNumber;
   
}
//check valid password
//check if arg is pure numeric and a +ive whole number 
function IsPassword(sText)
{
   var ValidChars = "QWERTYUIOPASDFGHJKLZXCVBNMqwertyuiopasdfghjklzxcvbnm0123456789_";
   var ret=true;
   var Char;
 
   for (i = 0; i < sText.length && ret == true; i++) 
   { 
      Char = sText.charAt(i); 
      if (ValidChars.indexOf(Char) == -1) 
         {
         ret= false;
         }
   }
   return ret;
}
//check if arg is pure numeric and a +ive whole number 
function IsStrictNumeric(sText)
{
   var ValidChars = "0123456789";
   var IsNumber=true;
   var Char;

 
   for (i = 0; i < sText.length && IsNumber == true; i++) 
      { 
      Char = sText.charAt(i); 
      if (ValidChars.indexOf(Char) == -1) 
         {
         IsNumber = false;
         }
      }
   return IsNumber;
   
}
//func for char checking 
function IsValid(argValue,argValidChars)
{
   var ValidChars = argValidChars;
   var ret=true;
   var Char;
 
   for (i = 0; i < argValue.length && ret == true; i++) 
      { 
      Char = argValue.charAt(i); 
      if (ValidChars.indexOf(Char) == -1) 
         {
         ret = false;
         }
      }
   return ret;
}
//check if arg is  numeric and a +ive decimal number
function IsFloatOrNumeric(argStr)
{
	var s = new String(argStr);
	var cnt=0;
	len = s.length;
	if (IsBlank(argStr)) { return false;}
	for(i=0;i<len;i++)
	{
		intCh = GetAsciiCode(s.charAt(i));
		
		if (intCh==46) //there can't be more than one decimal
		{
			cnt++;
			if(cnt>1)
				return false;
		}
		
		if (intCh==46&&(i==0||i==len-1))//first char and last char cannot be decimal
		{
			 return false;
		}
		
		if(!((intCh>=48&&intCh<=57)||(intCh==46)))
		{
			return false;
		}
	}
	return true;
}

//check if a string contains whitespaces or nothing ...
function IsBlank(argStr)
{
	var s = new String(argStr);
	var cnt=0;
	len = s.length;
	
	for(i=0;i<len;i++)
	{
		intCh = GetAsciiCode(s.charAt(i));
		if(intCh==32)
		{
			cnt++;
		}
	}
	if ((cnt==len)||(cnt==0&&len==0))
	{
		return true;
	}
	return false;
}

//check if a string contains special characters
function IsSpecialCharacter(argStr)
{
	var s = new String(argStr);
	var cnt=0;
	len = s.length;
	if (IsBlank(argStr)) { return false;}
	
	for(i=0;i<len;i++)
	{
		intCh = GetAsciiCode(s.charAt(i));
		if ((intCh>=0&&intCh<=31) || (intCh>=127&&intCh<=255))
		{
			return true;
		}
	}
	return false;
}

//check if a string abides to a min , max range rule for an input field
function IsLengthBetweenRange(argStr,MIN,MAX)
{
	var s = new String(argStr)
	len = s.length;
	if (len<MIN||len>MAX)
	{
		return false;
	}
	return true;
}

//check valid international phone number xxx-xxx-xxxxxxxx
function IsValidInternationalPhoneFaxNumber(argStr)
{
	var s = new String(argStr);
	var cnt=0;
	len = s.length;
	
	if (IsThereAnyWhiteSpace(argStr)==true)
	{
		return false;
	}
		
	if (!(s.indexOf("-")>=0))
	{
		return false;
	}
		
	arr = s.split("-")
	
	if (arr.length!=3)
	{
		return false;
	}
	
	var countrycode=new String(arr[0]);
	var statecode=new String(arr[1]);
	var localcode=new String(arr[2]);
	
	if (IsNumeric(countrycode)==false||IsNumeric(statecode)==false||IsNumeric(localcode)==false)
	{
	return false;
	}
	
	if (IsLengthBetweenRange(countrycode,2,3)==false||IsLengthBetweenRange(statecode,2,3)==false||IsLengthBetweenRange(localcode,4,8)==false)
	{
		return false;
	}
	
	return true;
}

//check if arg contains no white spaces
function IsThereAnyWhiteSpace(argStr)
{
	var s = new String(argStr);
	var cnt=0;
	len = s.length;
	if (IsBlank(argStr))
	{
	return false;
	}
	
	if(s.indexOf(" ")>=0)
	{
		return true;
	}
	return false;
}
//check if number is between given range
function CheckNumericRange(argStr,MIN,MAX)
{
	if (IsNumeric(argStr)==true)
	{
		var n = new Number(argStr);
		
		if (n<MIN||n>MAX)
		{
			return false;
		}
		else
		{
			return true;
		}
	}
	else
	{
		return false;
	}
}
function IsValidName(argStr)
{
	var s = new String(argStr);
	var cnt=0;
	len = s.length;
	
	for(i=0;i<len;i++)
	{
		intCh = GetAsciiCode(s.charAt(i));
		if(!((intCh==32)||(intCh>=65&&intCh<=90)||(intCh>=97&&intCh<=122)||(intCh==46)||(intCh==39)))
		{
			return false;
		}	
	}
	return true;
}
function IsValidEmail(argStr)
{
	var s = new String(argStr)
	
	if(IsBlank(s)==true) {return false;}
	if(IsThereAnyWhiteSpace(s)==true) { return false;}
	if(IsValid(s,"qwertyuiopasdfghjklzxcvbnm0123456789-@.QWERTYUIOPASDFGHJKLZXCVBNM")==false) return false;
	if(s.indexOf('@')<1) { return false;}
	
	var dotCount;
	var id = new String();
	var dom = new String();
	
	arr=s.split('@')
	
	id  = arr[0];
	dom = arr[1];
	
	
	
	if (id.length<1) { return false;}
	if (dom.length<4) { return false;}
	if (dom.indexOf('.')<1) { return false;}
	return true;
}
function IsListBoxSelected(objListBox)
{
	
	/*var strText = new String(objListBox.options[objListBox.selectedIndex].text)
	if (strText.toUpperCase()=='SELECT') return false;*/
	
	if (objListBox.options[objListBox.selectedIndex].value==0)
	{
		return false;
	}
	return true;
}
//resolve extra data passed with a control to the form and get name - value pairs 
function GetCommand(CONTROL_DATA,MKEY)
{	
	arr = CONTROL_DATA.split("|")
	for(i=0;i<arr.length;i++)
	{
		arr2=arr[i].split("-");
		if (arr2[0]==MKEY)
		{
			return arr2[1];
		}
	}
}
/*fn :: restrict the user to select only gif,jpe,png files for photo uploading */
function IsValidFile(argStr,type)
{
	var fileExt=new Array();
	if(type.toUpperCase()=='P')//picture
	{
		fileExt[0]="GIF";
		fileExt[1]="JPEG";
		fileExt[2]="PNG";
		fileExt[3]="JPG";
	}
	if(type.toUpperCase()=='C')//cv
	{
		fileExt[0]="TXT";
		fileExt[1]="DOC";
		fileExt[2]="XLS";
		fileExt[3]="ZIP";
		fileExt[4]="HTM";
		fileExt[5]="HTML";
	}

	dt=argStr;
	if(dt.length>0)
	{
		dotpos = dt.lastIndexOf(".");
		ext = dt.substr(dotpos+1);
		for(i=0;i<fileExt.length;i++)
		{
			if (ext.toUpperCase()==fileExt[i])
			{
				return true;				
			}
		}
	return false;
	}
	else
	{
		//if no file is selected then return true as there is nothin to check
		return true;
	}
	return false;
}
//***********************************************************************************************
//This function takes the form obj as arg and processes all it's elements by the ids passed to it
//***********************************************************************************************

function CheckEntireForm(objForm)
{
	var intFormElements=new Number();		//number of form elements
	var obj;								//pointer to particular object of form
	var i;									//loop var
	var COMMAND_STRING = new String();		//command string of form control
	var FINAL_MESSAGE = new String();		//message to throw if validation fails
	
	
	var RQ;									//required field
	var NM;									//name field
	var NU;									//numeric fiels
	var FN;									//float numeric
	var NUR;								//numeric range
	var NURMX;								//if nur then max numeric range
	var NURMN;								//if nur then min numeric range
	var PH;									//phone field
	var EM;									//email field
	
	var CMX;								//field max length
	var CMN;								//field min length
	var LBC;								//control is a list box select
	var MSS_CONTROL;						//mss associated with a control(message)
	var SPA;								//spaces not allowed
	
	var NRC;
	var CRC;
	var FUP;
	var TFP;
	var STN;								//STRICT NUMERIC NO DECIMALS
	var PWD;								//password field
	
	var YES="Y";							//constants for the ease of distinguishing
	var NO="N";								//constants for the ease of distinguishing
	
	var CONTROL_VALUE;
	var m;
	
	//get number of form elements
	intFormElements= objForm.elements.length;
	
	//seperate messages for all elements
	var MESSAGE_ARRAY = new Array(intFormElements)
	
	//loop through all elements
	for(i=0;i<intFormElements;i++)
	{
		obj = objForm.elements[i]
		
		COMMAND_STRING = obj.lang;
		//alert(COMMAND_STRING);
		COMMAND_STRING = COMMAND_STRING.toUpperCase();
		
		//get custom validation
	
		RQ			= GetCommand(COMMAND_STRING,"RQ");
		NM			= GetCommand(COMMAND_STRING,"NM");
		NU			= GetCommand(COMMAND_STRING,"NU");
		FN			= GetCommand(COMMAND_STRING,"FN");
		NUR			= GetCommand(COMMAND_STRING,"NUR");
		NURMX		= GetCommand(COMMAND_STRING,"NURMX");
		NURMN		= GetCommand(COMMAND_STRING,"NURMN");
		PH			= GetCommand(COMMAND_STRING,"PH");
		EM			= GetCommand(COMMAND_STRING,"EM");
		CMX			= GetCommand(COMMAND_STRING,"CMX");
		CMN			= GetCommand(COMMAND_STRING,"CMN");
		LBC			= GetCommand(COMMAND_STRING,"LBC");
		MSS_CONTROL = GetCommand(COMMAND_STRING,"MSS");
		SPA			= GetCommand(COMMAND_STRING,"SPA");
		NRC			= GetCommand(COMMAND_STRING,"NRC");
		CRC			= GetCommand(COMMAND_STRING,"CRC");
		FUP			= GetCommand(COMMAND_STRING,"FUP")
		TFP			= GetCommand(COMMAND_STRING,"TFP")
		STN			= GetCommand(COMMAND_STRING,"STN")
		PWD			= GetCommand(COMMAND_STRING,"PWD")
		
		CONTROL_VALUE = obj.value
		MESSAGE_ARRAY[i]=""
		
		//check required
		if (RQ==YES)
		{
			if (IsBlank(CONTROL_VALUE)==true)
			{
				MESSAGE_ARRAY[i] = MESS_BLANK+MSS_CONTROL
			}
		}
		//check name
		if (NM==YES)
		{
			if (IsValidName(CONTROL_VALUE)==false&&MESSAGE_ARRAY[i].length==0)
			{
				MESSAGE_ARRAY[i] = MESS_NAME+MSS_CONTROL;
			}
		}
		//check strict numeric
		if (STN==YES)
		{
			if (IsStrictNumeric(CONTROL_VALUE)==false&&MESSAGE_ARRAY[i].length==0)
			{
				MESSAGE_ARRAY[i] = MESS_STRICTNUMERIC+MSS_CONTROL;
			}
		}
		//check numeric
		if (NU==YES)
		{
			if (IsNumeric(CONTROL_VALUE)==false&&MESSAGE_ARRAY[i].length==0)
			{
				MESSAGE_ARRAY[i] = MESS_NUMERIC+MSS_CONTROL;
			}
		}
		//check float numeric
		if (FN==YES)
		{
			if (IsFloatOrNumeric(CONTROL_VALUE)==false&&MESSAGE_ARRAY[i].length==0)
			{
				MESSAGE_ARRAY[i] = MESS_NUMERIC+MSS_CONTROL;
			}
		}
		//check password
		if (PWD==YES)
		{
			if (IsPassword(CONTROL_VALUE)==false&&MESSAGE_ARRAY[i].length==0)
			{
				MESSAGE_ARRAY[i] = MESS_PASSWORD+MSS_CONTROL;
			}
		}
		//check numeric with range
		if (NUR==YES)
		{
			if(STN==YES)
			{
				if (IsStrictNumeric(CONTROL_VALUE)==false&&MESSAGE_ARRAY[i].length==0)
				{
					MESSAGE_ARRAY[i] = MESS_NUMERIC+MSS_CONTROL;
				}		
			}
			else
			{
				if (IsNumeric(CONTROL_VALUE)==false&&MESSAGE_ARRAY[i].length==0)
				{
					MESSAGE_ARRAY[i] = MESS_NUMERIC+MSS_CONTROL;
				}
			}
		}
		
		if (NRC==YES&&MESSAGE_ARRAY[i].length==0)
		{
			if (CheckNumericRange(CONTROL_VALUE,NURMN,NURMX)==false&&MESSAGE_ARRAY[i].length==0)
			{
				MESSAGE_ARRAY[i] = MESS_NUMERIC_RANGE+MSS_CONTROL+"[Range: "+NURMN+" to "+NURMX+ " ]";
			}
		}
		
		//check phone number
		if (PH==YES&&MESSAGE_ARRAY[i].length==0)
		{
			if (IsValidInternationalPhoneFaxNumber(CONTROL_VALUE)==false&&MESSAGE_ARRAY[i].length==0)
			{
				MESSAGE_ARRAY[i] = MESS_PHONE+MSS_CONTROL;
			}
		}
		
		//check email
		if (EM==YES&&MESSAGE_ARRAY[i].length==0)
		{
			if (IsValidEmail(CONTROL_VALUE)==false&&MESSAGE_ARRAY[i].length==0)
			{
				MESSAGE_ARRAY[i] = MESS_EMAIL+MSS_CONTROL;
			}
		}
		//check length for character data
		if (CRC==YES&&MESSAGE_ARRAY[i].length==0)
		{
			if (IsLengthBetweenRange(CONTROL_VALUE,parseInt(CMN),parseInt(CMX))==false&&MESSAGE_ARRAY[i].length==0)
			{
				MESSAGE_ARRAY[i] = MESS_CHAR_DATA+MSS_CONTROL+ " Range ("+CMN + " to " + CMX+ " )";
			}
		}
		//check if value  from a list is selectd
		if (LBC==YES&&MESSAGE_ARRAY[i].length==0)
		{
			if(IsListBoxSelected(obj)==false&&MESSAGE_ARRAY[i].length==0)
			{
				MESSAGE_ARRAY[i] = MESS_LIST+MSS_CONTROL;
			}
		}
		//check file upload is havin a valid file upload
		
		if (FUP==YES&&MESSAGE_ARRAY[i].length==0)
		{
			if (IsValidFile(CONTROL_VALUE,TFP)==false)
			{
				if (TFP=='P') { var e = new String("GIF,JPG,PNG")}
				if (TFP=='C') { var e = new String("TXT,DOC,HTM,HTML,ZIP,XLS")}
				MESSAGE_ARRAY[i] = MESS_FUP+MSS_CONTROL+" Valid file formats are : " + e;
			}
		}
		
	}
	
	//end checking form controls
	m="";
	for(i=0;i<intFormElements;i++)
	{
		m+=MESSAGE_ARRAY[i];
	}
	
	if(m!="")
	{
		FINAL_MESSAGE+=MESS_START + "\n\n"
		
		for(i=0;i<intFormElements;i++)
		{
			if (MESSAGE_ARRAY[i]!="")
			{
				//FINAL_MESSAGE+="("+parseInt(i+1)+") "+MESSAGE_ARRAY[i]+"\n";
				FINAL_MESSAGE+='» '+MESSAGE_ARRAY[i]+"\n";
			}
		}
		alert(FINAL_MESSAGE);
		return false;
	}
	else
	{
		return true;
	}
}
function selectAllCheckboxes(arg)
{
	
	var intFormElements= document.Form1.elements.length;
	for(i=0;i<intFormElements-1;i++)
	{
		if(document.Form1.elements[i].type=="checkbox")
		{
			document.Form1.elements[i].checked=arg.checked;
		}
	}
	
}