// Title: Tigra Form Validator
// URL: http://www.softcomplex.com/products/tigra_form_validator/
// Version: 1.3
// Date: 08/25/2005 (mm/dd/yyyy)
// Notes: This script is free. Visit official site for further details.

// regular expressions or function to validate the format
var re_dt = /^(\d{1,2})\-(\d{1,2})\-(\d{4})$/,
re_tm = /^(\d{1,2})\:(\d{1,2})\:(\d{1,2})$/,
a_formats = {
	'alpha'   : /^[a-zA-Z\.\-]*$/,
	'alphanum': /^\w+$/,
	'unsigned': /^\d+$/,
	'integer' : /^[\+\-]?\d*$/,
	'real'    : /^[\+\-]?\d*\.?\d*$/,
	'email'   : /^[\w-\.]+\@[\w\.-]+\.[a-z]{2,4}$/,
	'phone'   : /^[\d\.\s\-]+$/,
	'currency': /^[0-9\.\,\$]*$/,
	'date'    : function (s_date) {
		// check format
		if (!re_dt.test(s_date))
			return false;
		// check allowed ranges	
		if (RegExp.$1 > 31 || RegExp.$2 > 12)
			return false;
		// check number of day in month
		var dt_test = new Date(RegExp.$3, Number(RegExp.$2-1), RegExp.$1);
		if (dt_test.getMonth() != Number(RegExp.$2-1))
			return false;
		return true;
	},
	'time'    : function (s_time) {
		// check format
		if (!re_tm.test(s_time))
			return false;
		// check allowed ranges	
		if (RegExp.$1 > 23 || RegExp.$2 > 59 || RegExp.$3 > 59)
			return false;
		return true;
	}
},
a_messages = [
	'No form name passed to validator construction routine',
	'No array of "%form%" form fields passed to validator construction routine',
	'Form "%form%" can not be found in this document',
	'Incomplete "%n%" form field descriptor entry. "l" attribute is missing',
	'Can not find form field "%n%" in the form "%form%"',
	'Can not find label tag (id="%t%")',
	'Can not verify match. Field "%m%" was not found',
	'"%l%" is a required field',
	'Value for "%l%" must be %mn% characters or more',
	'Value for "%l%" must be no longer than %mx% characters',
	'"%v%" is not valid value for "%l%"',
	'"%l%" must match "%ml%"',
	'Value for "%l%" must be %lmn% lines or more',
	'Value for "%l%" must not be more than %lmx% lines'
]

// validator counstruction routine
function validator(a_fields, field_prefix) {
	
	this.f_error = validator_error;
	this.f_alert = function(s_msg) { alert(s_msg); return false }
		
	// check required parameters
	//if (!s_form)	
	//	return this.f_alert(this.f_error(0));
	//this.s_form = s_form;
	
	if (!a_fields || typeof(a_fields) != 'object')
		return this.f_alert(this.f_error(1));
	this.a_fields = a_fields;
	this.field_prefix = field_prefix;
//	this.a_2disable = o_cfg && o_cfg['to_disable'] && typeof(o_cfg['to_disable']) == 'object'
//		? o_cfg['to_disable']
//		: [];
		
	this.exec = validator_exec;
}

// validator execution method
function validator_exec() {
	//var o_form = document.forms[this.s_form];
//	if (!o_form)	
//		return this.f_alert(this.f_error(2));

	b_dom = document.body && document.body.innerHTML;
	
	// check integrity of the form fields description structure
	for (var n_key in this.a_fields) {
		// check input description entry
		this.a_fields[n_key]['n'] = n_key;
		if (!this.a_fields[n_key]['l'])
			return this.f_alert(this.f_error(3, this.a_fields[n_key]));
		//o_input = o_form.elements[n_key];
		o_input = get_form_field(n_key, this.field_prefix);
		if (!o_input)
			return this.f_alert(this.f_error(4, this.a_fields[n_key]));
		this.a_fields[n_key].o_input = o_input;
	}

	// reset labels highlight
	if (b_dom)
		for (var n_key in this.a_fields) 
			if (this.a_fields[n_key]['t']) {
				var s_labeltag = this.a_fields[n_key]['t'], e_labeltag = get_element(s_labeltag);
				if (e_labeltag) { 
						//return this.f_alert(this.f_error(5, this.a_fields[n_key]));
					this.a_fields[n_key].o_tag = e_labeltag;
					
					// normal state parameters assigned here
					e_labeltag.className = 'tfvNormal';
				}
			}

	// collect values depending on the type of the input
	for (var n_key in this.a_fields) {
		var s_value = '';
		o_input = this.a_fields[n_key].o_input;
		if (o_input.type == 'checkbox') // checkbox
			s_value = o_input.checked ? o_input.value : '';
	  else if (o_input.type=='textarea')
	    s_value = o_input.value;
		else if (o_input.type=='text' || o_input.type=='password' || o_input.type=='hidden') // text, password, hidden
			s_value = o_input.value;
		else if (o_input.options) // select
			s_value = o_input.selectedIndex > -1
				? o_input.options[o_input.selectedIndex].value
				: null;
		else if (o_input.type=='radio')
		{
			//alert('RADIO ' +o_input +' lenght: '+ o_input.length +' - '+ n_key + ':' + this.a_fields[n_key]['v']);
			radioObj = o_input;
			var radioLength = radioObj.length;
			if(radioLength == undefined)
				if(radioObj.checked)
					s_value = radioObj.value;
				else
					s_value = "";
			for(var i = 0; i < radioLength; i++) {
				if(radioObj[i].checked) {
					s_value = radioObj[i].value;
					break;
				}
			}
			
		}
		else if (o_input.length > 0) // radiobuton
		{	
			for (var n_index = 0; n_index < o_input.length; n_index++)
				if (o_input[n_index].checked) {
					s_value = o_input[n_index].value;
					break;
				}
		}
		this.a_fields[n_key]['v'] = s_value.replace(/(^\s+)|(\s+$)/g, '');
		//alert(o_input +' lenght: '+ o_input.length +' - '+ n_key + ':' + this.a_fields[n_key]['v']);
	}
	
	// check for errors
	var n_errors_count = 0,
		n_another, o_format_check;
	for (var n_key in this.a_fields) {
		o_format_check = this.a_fields[n_key]['f'] && a_formats[this.a_fields[n_key]['f']]
			? a_formats[this.a_fields[n_key]['f']]
			: null;

		// reset previous error if any
		this.a_fields[n_key].n_error = null;

		var field_value_total_lines = validator_count_newline(String(this.a_fields[n_key]['v']));
		
		// check reqired fields
		if (this.a_fields[n_key]['r'] && !this.a_fields[n_key]['v']) {
			this.a_fields[n_key].n_error = 1;
			n_errors_count++;
		}
		// check length
		else if (this.a_fields[n_key]['mn'] && this.a_fields[n_key]['v'] != '' && String(this.a_fields[n_key]['v']).length < this.a_fields[n_key]['mn']) {
			this.a_fields[n_key].n_error = 2;
			n_errors_count++;
		}
		else if (this.a_fields[n_key]['mx'] && String(this.a_fields[n_key]['v']).length > this.a_fields[n_key]['mx']) {
			this.a_fields[n_key].n_error = 3;
			n_errors_count++;
		}
		// check line break - new line

		else if (this.a_fields[n_key]['lmn'] && field_value_total_lines < this.a_fields[n_key]['lmn']) {
			this.a_fields[n_key].n_error = 6;
			n_errors_count++;
		}
		else if (this.a_fields[n_key]['lmx'] && field_value_total_lines > this.a_fields[n_key]['lmx']) {
			//alert(field_value_total_lines);
			this.a_fields[n_key].n_error = 7;
			n_errors_count++;
		}
		// check format
		else if (this.a_fields[n_key]['v'] && this.a_fields[n_key]['f'] && (
			(typeof(o_format_check) == 'function'
			&& !o_format_check(this.a_fields[n_key]['v']))
			|| (typeof(o_format_check) != 'function'
			&& !o_format_check.test(this.a_fields[n_key]['v'])))
			) {
			this.a_fields[n_key].n_error = 4;
			n_errors_count++;
		}
		// check match	
		else if (this.a_fields[n_key]['m']) {
			for (var n_key2 in this.a_fields)
				if (n_key2 == this.a_fields[n_key]['m']) {
					n_another = n_key2;
					break;
				}
			if (n_another == null)
				return this.f_alert(this.f_error(6, this.a_fields[n_key]));
			if (this.a_fields[n_another]['v'] != this.a_fields[n_key]['v']) {
				this.a_fields[n_key]['ml'] = this.a_fields[n_another]['l'];
				this.a_fields[n_key].n_error = 5;
				n_errors_count++;
			}
		}
		
	}

	// collect error messages and highlight captions for errorneous fields
	var s_alert_message = '',
		e_first_error;

	if (n_errors_count) {
		for (var n_key in this.a_fields) {
			var n_error_type = this.a_fields[n_key].n_error,
				s_message = '';
				
			if (n_error_type) {
				s_message = this.f_error(n_error_type + 6, this.a_fields[n_key]);
        if (n_error_type == 4 && this.a_fields[n_key]['f']) {
          var ft_name =  this.a_fields[n_key]['f'];
          if (ft_name == 'email') s_message += ". It must be an email address.";
          else if (ft_name == 'alpha') s_message += ". Only alphabet letters are allow.";
          else if (ft_name == 'integer') s_message += ". It must be numbers."
        }
			}
				
			if (s_message) {
				if (!e_first_error)
					//e_first_error = o_form.elements[n_key];
					e_first_error = get_form_field(n_key, this.field_prefix);
				s_alert_message += s_message + "\n";
				// highlighted state parameters assigned here
				if (b_dom && this.a_fields[n_key].o_tag)
					this.a_fields[n_key].o_tag.className = 'tfvHighlight';
			}
		}
		alert(s_alert_message);
		// set focus to first errorneous field
		if (e_first_error.focus && e_first_error.type != 'hidden'  && !e_first_error.disabled)
			eval("e_first_error.focus()");
		// cancel form submission if errors detected
		return false;
	}
	/*
	for (n_key in this.a_2disable)
		if (o_form.elements[this.a_2disable[n_key]])
			o_form.elements[this.a_2disable[n_key]].disabled = true;
	*/
	return true;
}

function validator_error(n_index) {
	var s_ = a_messages[n_index], n_i = 1, s_key;
	for (; n_i < arguments.length; n_i ++)
		for (s_key in arguments[n_i])
			s_ = s_.replace('%' + s_key + '%', arguments[n_i][s_key]);
	s_ = s_.replace('%form%', this.s_form);
	return s_
}

function get_element (s_id) {
	return (document.all ? document.all[s_id] : (document.getElementById ? document.getElementById(s_id) : null));
}

function get_form_field(name, prefix) {
	if (prefix) {
		x_field = document.getElementsByName(prefix+'['+name+']');
	}
	else {
		x_field = document.getElementsByName(name);
	}
	
	

	if (x_field[0].type == 'radio') {
		return x_field;
	}
	return (x_field[0] ? x_field[0] : null); 
}

function validator_count_newline(str){
	/* counts \n */
	try {
		return((str.match(/[^\n]*\n[^\n]*/gi).length) + 1);
	} catch(e) {
		return 0;
	}
}