/********************************************************************************
*				 M O D I F I E D   B y    W A Q A R   A H M A D 
*	     		 Date : 23 06, 2003
*  The Validator
*   The class that handles all validation related issues
*    
*   pass the name of the form while constructing.
*   methods:
*    addValidation(input_item_name,validation_descriptor,error_string)
*       call this method for each input item. Single input item can have 
*       many validations
*      
*    setAddnlValidationFunction(function_name)
*             call this function to set a custom validat function, which will
*						 be called after other validations are over.
*			       The function should return 'true' or 'false' 
**********************************************************************************/
//alert('Hello in validation');
function Validator(frmname)
{
  this.formobj=document.forms[frmname];
	if(!this.formobj)
	{
	  alert("couldnot get Form object "+frmname);
		return;
	}
	if(this.formobj.onsubmit)
	{
	 this.formobj.old_onsubmit = this.formobj.onsubmit;
	 this.formobj.onsubmit=null;
	}
	else
	{
	 this.formobj.old_onsubmit = null;
	}
	this.formobj.onsubmit=form_submit_handler;
	this.addValidation = add_validation;
	this.setAddnlValidationFunction=set_addnl_vfunction;
	this.clearAllValidations = clear_all_validations;
}

function set_addnl_vfunction(functionname)
{
  this.formobj.addnlvalidation = functionname;
}
function clear_all_validations()
{
	for(var itr=0;itr < this.formobj.elements.length;itr++)
	{
		this.formobj.elements[itr].validationset = null;
	}
}
function form_submit_handler()
{
	for(var itr=0;itr < this.elements.length;itr++)
	{
		if(this.elements[itr].validationset &&
	   !this.elements[itr].validationset.validate())
		{
		  return false;
		}
	}
	if(this.addnlvalidation)
	{
	  str =" var ret = "+this.addnlvalidation+"()";
	  eval(str);
    if(!ret) return ret;
	}
	return true;
}

function add_validation(itemname,descriptor,errstr)
{
  if(!this.formobj)
	{
	  alert("the form object is not set properly");
		return;
	}//if
	var itemobj = this.formobj[itemname];
  if(!itemobj)
	{
	  alert("Couldnot get the input object named: "+itemname);
		return;
	}
		
	if(!itemobj.validationset)
	{
	  itemobj.validationset = new ValidationSet(itemobj);
	}
  itemobj.validationset.add(descriptor,errstr);
}
function ValidationDesc(inputitem,desc,error)
{
  this.desc=desc;
	this.error=error;
	this.itemobj = inputitem;
	this.validate=vdesc_validate;
}
function vdesc_validate()
{
 if(!V2validateData(this.desc,this.itemobj,this.error))
 {
    this.itemobj.focus();
	this.itemobj.select();
	return false;
 }
 return true;
}


function ValidationSet(inputitem)
{
  this.vSet=new Array();
	this.add= add_validationdesc;
	this.validate= vset_validate;
	this.itemobj = inputitem;
}
function add_validationdesc(desc,error)
{
  this.vSet[this.vSet.length]= 
	  new ValidationDesc(this.itemobj,desc,error);
}
function vset_validate()
{
   for(var itr=0;itr<this.vSet.length;itr++)
	 {
	   if(!this.vSet[itr].validate())
		 {
		   return false;
		 }
	 }
	 return true;
}

//---------------------------------EMail Check ------------------------------------ 

/*  checks the validity of an email address entered 
*   returns true or false 
*   
*/ 

function validateEmailv2(email)
{
// a very simple email validation checking. 
// you can add more complex email checking if it helps 
    var splitted = email.match("^(.+)@(.+)$");
    if(splitted == null) return false;
    if(splitted[1] != null )
    {
      var regexp_user=/^\"?[\w-_\.]*\"?$/;
      if(splitted[1].match(regexp_user) == null) return false;
    }
    if(splitted[2] != null)
    {
      var regexp_domain=/^[\w-\.]*\.[A-Za-z]{2,4}$/;
      if(splitted[2].match(regexp_domain) == null) 
      {
	    var regexp_ip =/^\[\d{1,3}\.\d{1,3}\.\d{1,3}\.\d{1,3}\]$/;
	    if(splitted[2].match(regexp_ip) == null) return false;
      }// if
      return true;
    }
return false;
}

/* function V2validateData 
*  Checks each field in a form 

*/ 
function V2validateData(strValidateStr,objValue,strError) 
{ 
    var epos = strValidateStr.search("="); 
    var command  = ""; 
    var cmdvalue = ""; 
    if(epos >= 0) 
    { 
     command  = strValidateStr.substring(0,epos); 
     cmdvalue = strValidateStr.substr(epos+1); 
    } 
    else 
    { 
     command = strValidateStr; 
    } 

    switch(command) 
    { 
        case "req": 
        case "required": 
         { 
           if(eval(objValue.value.length) == 0) 
           { 
              if(!strError || strError.length ==0) 
              { 
                strError = objValue.name + " : Required Field"; 
              }//if 
				alert(strError); 
				return false; 
           }//if 
           break;             
         }//case required 
        case "maxlength": 
        case "maxlen": 
          { 
             if(eval(objValue.value.length) >  eval(cmdvalue)) 
             { 
               if(!strError || strError.length ==0) 
               { 
                 strError = objValue.name + " : "+cmdvalue+" characters maximum "; 
               }//if 
               alert(strError + "\n[Current length = " + objValue.value.length + " ]"); 
               return false; 
             }//if 
             break; 
          }//case maxlen 
        case "minlength": 
        case "minlen": 
           { 
             if(eval(objValue.value.length) <  eval(cmdvalue)) 
             { 
               if(!strError || strError.length ==0) 
               { 
                 strError = objValue.name + " : " + cmdvalue + " characters minimum  "; 
               }//if               
               alert(strError + "\n[Current length = " + objValue.value.length + " ]"); 
               return false;                 
             }//if 
             break; 
            }//case minlen 
        case "alnum": 
        case "alphanumeric": 
           { 
              var charpos = objValue.value.search("[^A-Za-z0-9]"); 
              if(objValue.value.length > 0 &&  charpos >= 0) 
              { 
               if(!strError || strError.length ==0) 
                { 
                  strError = objValue.name+": Only alpha-numeric characters allowed "; 
                }//if 
                alert(strError); 
                return false; 
              }//if 
              break; 
           }//case alphanumeric 
		case "pnum": 
		case "pnumeric":
		{
              var charpos = objValue.value.search("[^0-9]"); 
              if((objValue.value.length > 0 &&  charpos >= 0) || parseFloat(objValue.value) <= 0 )
              {
                if(!strError || strError.length ==0)
                {
                  strError = objValue.name+": Only digits allowed ";
                }//if
                alert(strError);
                return false;
              }//if 
              break;               
           }//positive numeric
		case "money":
		{
              var charpos = objValue.value.search("[^0-9.]");
              if((objValue.value.length > 0 &&  charpos >= 0) || parseFloat(objValue.value) < 0 )
              {
                if(!strError || strError.length ==0)
                {
                  strError = objValue.name+": Only digits allowed ";
                }//if
                alert(strError);
                return false;
              }//if 
              break;               
           }//money
        case "num": 
        case "numeric": 
           { 
              var charpos = objValue.value.search("[^0-9]"); 
              if(objValue.value.length > 0 &&  charpos >= 0) 
              { 
                if(!strError || strError.length ==0) 
                { 
                  strError = objValue.name+": Only digits allowed "; 
                }//if               
                alert(strError); 
                return false; 
              }//if 
              break;               
           }//numeric 
        case "alphabetic": 
        case "alpha": 
           { 
              var charpos = objValue.value.search("[^A-Za-z]");
              if(objValue.value.length > 0 &&  charpos >= 0) 
              { 
                  if(!strError || strError.length ==0) 
                { 
                  strError = objValue.name+": Only alphabetic characters allowed "; 
                }//if                             
                alert(strError); 
                return false; 
              }//if 
              break; 
           }//alpha 
		case "alnumhyphen":
			{
              var charpos = objValue.value.search("[^A-Za-z0-9\-_]"); 
              if(objValue.value.length > 0 &&  charpos >= 0) 
              { 
                  if(!strError || strError.length ==0) 
                { 
                  strError = objValue.name+": characters allowed are A-Z,a-z,0-9,- and _"; 
                }//if                             
                alert(strError); 
                return false; 
              }//if 			
			break;
			}
			
		case "val_email": 
          { 
		  	if(objValue.value != "")
			{
	           if(!validateEmailv2(objValue.value)) 
               { 
                 if(!strError || strError.length ==0) 
                 { 
                    strError = objValue.name+": Enter a valid Email address "; 
                 }//if
                 alert(strError); 
                 return false; 
               }//if 
			 }
			 else
			 {
			 	return true;
			 }
           break; 
		   }
        case "email": 
          { 
               if(!validateEmailv2(objValue.value)) 
               { 
                 if(!strError || strError.length ==0) 
                 { 
                    strError = objValue.name+": Enter a valid Email address "; 
                 }//if
                 alert(strError); 
                 return false; 
               }//if 
           break; 
          }//case email 
        case "lt": 
        case "lessthan": 
         { 
            if(isNaN(objValue.value)) 
            { 
              alert(objValue.name+": Should be a number "); 
              return false; 
            }//if 
            if(eval(objValue.value) >=  eval(cmdvalue)) 
            { 
              if(!strError || strError.length ==0) 
              { 
                strError = objValue.name + " : value should be less than "+ cmdvalue; 
              }//if               
              alert(strError); 
              return false;                 
             }//if             
            break; 
         }//case lessthan 
        case "gt": 
        case "greaterthan": 
         { 
            if(isNaN(objValue.value)) 
            { 
              alert(objValue.name+": Should be a number "); 
              return false; 
            }//if 
             if(eval(objValue.value) <=  eval(cmdvalue)) 
             { 
               if(!strError || strError.length ==0) 
               { 
                 strError = objValue.name + " : value should be greater than "+ cmdvalue; 
               }//if               
               alert(strError); 
               return false;                 
             }//if             
            break; 
         }//case greaterthan 
        case "regexp": 
         { 
            if(!objValue.value.match(cmdvalue)) 
            { 
              if(!strError || strError.length ==0) 
              { 
                strError = objValue.name+": Invalid characters found "; 
              }//if                                                               
              alert(strError); 
              return false;                   
            }//if 
           break; 
         }//case regexp 
        case "dontselect": 
         { 
            if(objValue.selectedIndex == null) 
            { 
              alert("dontselect command for non-select Item"); 
              return false; 
            } 
            if(objValue.selectedIndex == eval(cmdvalue)) 
            { 
             if(!strError || strError.length ==0) 
              { 
              strError = objValue.name+": Please Select one option "; 
              }//if                                                               
              alert(strError); 
              return false;                                   
             } 
             break; 
         }//case dontselect 
		 
// %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% W A Q A R's   C A S E S %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%

// %%%%%% Phone Number Can Contain WHAT?? %%%%%%

		case "phone_num":
			{
              var charpos = objValue.value.search("[^0-9\-_]"); 
              if(objValue.value.length > 0 &&  charpos >= 0) 
              { 
                  if(!strError || strError.length ==0) 
                { 
                  strError = objValue.name+": characters allowed are 0-9,- and _"; 
                }//if                             
                alert(strError); 
                return false; 
              }//if 			
			break;
			}
			
			
// %%%%%% CAN't ACCEPT SPACES %%%%%%

		case "no_space":
			{
              var i;
			  for(i=0; i<objValue.value.length; i++)
			  {
	              if((objValue.value.charAt(i) == " ")) 
	              { 
					strError = objValue.name+": Cannot Enter Spaces";
					alert(strError); 
	                return false; 
	              }//if                             
              }//for			
			break;
			}
		


// %%%%%% You Can Select Maximum WHAT Nummer Of Options in a Multiple Select?? %%%%%%			

			case "select_4":
			{
			
				// "listObject" is the object input array for the MULTIPLE SELECT 
				// list, referenced in the function call as "this.name", where
				// "name" is the name of the SELECT LIST OBJECTS.
				// "numToSelect" is the number of items you allow to be selected.
			
				var listObject = objValue;
				var numToSelect = 4;
				var listName = listObject.name;
				var optionsSelected = new Array;
				var allOptions = "";
				var j = 0;
			
				for (var i = 0; i < listObject.length; i++) 
				{
					if (listObject.options[i].selected) 
					{
						optionsSelected[j] = listObject.options[i].value;
						allOptions += listObject.options[i].text + " is " +
								 listObject.options[i].value + ".\r";
						j++;
					}
				}
				if (optionsSelected.length > numToSelect) 
				{
						alert("You have selected more than " +
								numToSelect + " options.\rPlease select " +
								numToSelect + ".");
								return false;
				} 
			}
			
			
// %%%%%% UNCHECK %%%%%% Does'nt Work Yet

		case "uncheck":
			{
             	objValue.checked = false;
				break;
			}

// %%%%%% Check if Checked %%%%%%
  case "checked": 
         { 
           if(objValue.checked == false) 
           { 
                 if(!strError || strError.length ==0) 
               { 
	              strError = objValue.name + " : Required Field"; 
			   }//if  
              alert(strError); 
              return false; 
           }//if 
           break;             
         }//case checked
		 
// %%%%%% Check Minus %%%%%%		 
        case "neg": 
           {
              var charpos = objValue.value.search("[^0-9.]"); 
              if(objValue.value.length > 0 &&  charpos >= 0)
              { 
                if(!strError || strError.length ==0) 
                { 
                  strError = objValue.name+": characters allowed are 0-9 and ."; 
                }//if                             
                alert(strError); 
                return false; 
			  }//if 			
			break;
			}
			
// %%%%%% Check Extension for Image [ Must be an image ] %%%%%%		 
        case "ex_image_all":
           {
		   if(objValue.value){
		   var strValue = objValue.value.toString();
			strValue = strValue.toLowerCase();
			if((strValue.lastIndexOf(".jpg")==-1) && (strValue.lastIndexOf(".jpeg")==-1) && (strValue.lastIndexOf(".gif")==-1) && (strValue.lastIndexOf(".png")==-1) && (strValue.lastIndexOf(".bmp")==-1))
              { 
                  if(!strError || strError.length ==0) 
                { 
                  strError = objValue.name+": This is not a valid image format!"; 
                }//if                             
                alert(strError); 
                return false; 
              }//if 			
			 }
			break;
			}
			
// %%%%%% Check Extension for Image [ Must be JPEG or JPG ] %%%%%%		 
        case "ex_jpg":
           {
		   if(objValue.value){
			if((objValue.value.lastIndexOf(".jpg")==-1) && (objValue.value.lastIndexOf(".jpeg")==-1) && (objValue.value.lastIndexOf(".JPG")==-1) && (objValue.value.lastIndexOf(".JPEG")==-1))
              { 
                  if(!strError || strError.length ==0) 
                { 
                  strError = objValue.name+": This is not a valid image format!"; 
                }//if
                alert(strError); 
                return false; 
              }//if 			
			 }
			break;
			}

// %%%%%% Check Extension for PDF Document [ Must be pdf ] %%%%%%		 
        case "ex_pdf":
           {
		   if(objValue.value){
			if((objValue.value.lastIndexOf(".pdf")==-1) && (objValue.value.lastIndexOf(".PDF")==-1))
              { 
                  if(!strError || strError.length ==0) 
                { 
                  strError = objValue.name+": characters allowed are 0-9 and ."; 
                }//if                             
                alert(strError); 
                return false; 
              }//if 			
			 }
			break;
			}
			
// %%%%%% Check for special characters %%%%%%		 
        case "sp_chars":
           {
		    var charpos = objValue.value.search("[<>]"); 
              if(objValue.value.length > 0 &&  charpos >= 0) 
              { 
                  if(!strError || strError.length ==0) 
                { 
                  strError = objValue.name+": characters allowed are 0-9 and ."; 
                }//if                             
                alert(strError); 
                return false; 
              }//if 			
			break;
			break;
			}


    }//switch 
    return true; 
}