function findObj(theObj, theDoc)
{
	var p, i, foundObj;
  
	if(!theDoc)
		theDoc = document;
	
	if( (p = theObj.indexOf("?") ) > 0 && parent.frames.length)
	{
		theDoc = parent.frames[theObj.substring(p+1)].document;
		theObj = theObj.substring(0,p);
	}
	if( !(foundObj = theDoc[theObj]) && theDoc.all)
		foundObj = theDoc.all[theObj];
		
	for (i=0; !foundObj && i < theDoc.forms.length; i++) 
		foundObj = theDoc.forms[i][theObj];
	
	for(i=0; !foundObj && theDoc.layers && i < theDoc.layers.length; i++)
		foundObj = findObj(theObj,theDoc.layers[i].document);
		
	if(!foundObj && document.getElementById)
		foundObj = document.getElementById(theObj);
  
	return foundObj;
}

function FieldValidator(id, context, controlType, validatorType, validatorArgs, errorMessage)
{
	// id del controllo da validare
	this.Id = id;
	// risultato della validazione sul controllo
	this.IsValid = true;
	// il nome della tabella/classe a cui fa riferimento
	this.Context = context;
	// il tipo di validatore (ex SearchFound, Required, Range, RegExpr ecc)
	this.ValidatorType = validatorType;
	// messaggio di alert per l'utente
	this.ErrorMessage = errorMessage;
	// indica il tipo di controllo da validare
	this.ControlType = controlType;
	// indica dei parametri per il validatore (ex range di valori, esprssioni regolari ecc.)
	this.ValidatorArgs = validatorArgs;
}

function PageValidator()
{
	this.Validators = new Array();
	var oThis = this;
	// risultato della validazione sul form
	this.IsValid = true;
	// Contesto su cui opera la validazione (nome tabella/vista)
	this.ValidationContext = "";
	
	this.ContextValidators = null;
	this.setValidationContext = function (context) 
	{ 
		oThis.ValidationContext = context;
		oThis.ContextValidators = new Array(); 
		for (i=0; i<oThis.getLength(); i++)
		{
			if (oThis.Validators[i].Context == context)
				oThis.ContextValidators.push(oThis.Validators[i]);
		}
	}
	
	this.getLength = function () { return oThis.Validators.length; }
}

PageValidator.prototype.Add = function (fValidator) 
{
	this.Validators.push(fValidator);
}

// effettua la validazione nel caso di azione salva
PageValidator.prototype.ValidateOnSave = function (Context) 
{
	this.setValidationContext(Context);
	this.IsValid = true;

	for (i=0; i<this.ContextValidators.length; i++)
	{
		switch (this.ContextValidators[i].ValidatorType)
		{
			case "Required" : this.ValidateRequiredValidator(this.ContextValidators[i]);
				break;
			case "SearchFound" : this.ValidateSearchFoundValidator(this.ContextValidators[i]);
				break;
			case "eMailFormat" : this.ValidateEmailFormatValidator(this.ContextValidators[i]);
				break;
		}
		this.IsValid = this.IsValid && this.ContextValidators[i].IsValid;
	}
	return this.IsValid;
}

PageValidator.prototype.ValidateRequiredValidator = function (validator) 
{
	if (!validator)
		return false;
	
	var objRequiredErrorIcon = findObj(validator.Id + "RequiredErrorIcon");	
			
	if (validator.ControlType=="SearchTextBox" || 
		validator.ControlType=="MaskTextBox" || 
		validator.ControlType=="BaseTextBox" || 
		validator.ControlType=="ImageBrowserTextBox" || 
		validator.ControlType=="eMailTextBox")
	{	
		var objValidator = findObj(validator.Id);
		var objRequiredErrorIcon = findObj(validator.Id + "RequiredErrorIcon");
		
		if (!objValidator || !objRequiredErrorIcon)
			return false;
		
		var Text = objValidator.value;
		if (Text=="")
		{
			validator.IsValid=false;
			objRequiredErrorIcon.style.display  = "inline";
		}
		else
		{
			validator.IsValid=true;
			objRequiredErrorIcon.style.display  = "none";
		}
	}
	else
	{
		if (validator.ControlType=="RadioYesNo")
		{
			var objYes = findObj(validator.Id + "_0");
			var objNo = findObj(validator.Id + "_1");
			if (!(objYes.checked || objNo.checked))
			{
				validator.IsValid=false;
				objRequiredErrorIcon.style.display  = "inline";
			}
			else
			{
				validator.IsValid=true;
				objRequiredErrorIcon.style.display  = "none";
			}
		}
		else
		{
			if (validator.ControlType=="ChooseList")
			{
				var objIndex = findObj(validator.Id);
				var index = objIndex.selectedIndex;
				if (index==0)
				{
					validator.IsValid=false;
					objRequiredErrorIcon.style.display  = "inline";
				}
				else
				{
					validator.IsValid=true;
					objRequiredErrorIcon.style.display  = "none";
				}
			}
			else
			{
				if (validator.ControlType=="CheckList")
				{
					validator.IsValid=false;
					var listLength = validator.ValidatorArgs;
					for (chkI=0; chkI<listLength; chkI++)
					{
						var objChkI = findObj(validator.Id+"_"+chkI);
						if (objChkI.checked)
						{
							validator.IsValid=true;
							break;
						}
					}
					if (validator.IsValid)
						objRequiredErrorIcon.style.display  = "none";
					else
						objRequiredErrorIcon.style.display  = "inline";
				}
				else
				{
					// qui altri controlli
				}

			}
		}
	}
}

PageValidator.prototype.ValidateSearchFoundValidator = function (validator) 
{
	if (validator.ControlType=="SearchTextBox")
	{
		var objValidator = findObj(validator.Id);
		var objPrevText = findObj(validator.Id + "PrevText");
		var objthisCode = findObj(validator.Id + "thisCode");
		var Text = objValidator.getAttribute("value");
		var PrevText = objPrevText.getAttribute("value");
		var thisCode = objthisCode.getAttribute("value");
		if (Text!="" && (thisCode=="" || Text!=PrevText))
			validator.IsValid=false;
		else
			validator.IsValid=true; 		
	}
}

PageValidator.prototype.ValidateEmailFormatValidator = function (validator) 
{
	if (validator.ControlType=="eMailTextBox")
	{
		var objValidator = findObj(validator.Id);
		var objErr = findObj(validator.Id + "ErrorIcon");
		
		if (objErr[0])
			objErr = objErr[0];
		
		if (!objValidator || !objErr.style)
			return false;
		
		var Text = objValidator.value; //.getAttribute("value");
		var re = /\w+([-+.]\w+)*@\w+([-.]\w+)*\.\w+([-.]\w+)*/;
		var rx = new RegExp(re);
		var matches = rx.exec(Text);
		if ((matches != null && Text == matches[0]) || Text=="")
		{
			validator.IsValid=true;
			objErr.style.display  = "none";
		}
		else
		{
			validator.IsValid=false;
			objErr.style.display  = "inline";
		}
	}
}