/*=============================================================================

			 	 TITLE:		NetMediaOne - Simple Form Validation
		  MODIFIED:		2008.03.21
		 AUTHOR(S): 	Graham Wheeler - NetMediaOne - www.netmediaone.com
		  REQUIRES:		NetMediaOne Core 1.2
									jQuery 1.2

=============================================================================*/

NMO.Validator = function(el) {
	
	var sp = this;
	
	this.container = el;
	this.$c = $(el);

	// 
	//	Set to "alert" to have errors displayed in a javascript alert window, or
	//	"inline" to have them appear next to the referenced form fields
	//
	this.notificationMethod = ( this.$c.attr("notificationmethod") != undefined ) ? this.$c.attr("notificationmethod") : "inline";
	
	// 
	//	Set to "before" or "after" to set the position of inline error messages
	//	relative to the referenced form field
	//
	this.notificationPosition = ( this.$c.attr("notificationposition") != undefined ) ? this.$c.attr("notificationposition") : "after";
	
	this.$c.submit( function() { return sp.isValid(); } );
	
};

NMO.Validator.prototype = {
	
	validationPatterns: [
		
		{ name: "Email", pattern: /^([0-9a-zA-Z]+([_.-]?[0-9a-zA-Z]+)*@[0-9a-zA-Z]+[0-9,a-z,A-Z,.,-]*(.){1}[a-zA-Z]{2,4})+$/, error: "Email address not in valid format" },
		{ name: "IPAddress", pattern: /^((25[0-5]|2[0-4][0-9]|1[0-9]{2}|[0-9]{1,2})\.){3}(25[0-5]|2[0-4][0-9]|1[0-9]{2}|[0-9]{1,2})$/, error: "IP address not in valid format" },
		{ name: "PhoneFax", pattern: /^(([0-9]{1})*[- .(]*([0-9a-zA-Z]{3})*[- .)]*[0-9a-zA-Z]{3}[- .]*[0-9a-zA-Z]{4})+$/, error: "Number not in valid format" }
		
	],
	
	getLabel: function(el) {

		if ( el.title != "" ) {
			return "'"+el.title+"'";
		} else {
			return "'"+el.name+"'";
		}				
		
	},
	
	isValid: function() {

		var sp = this;
		var errors = [];

		//
		//	Verify that the input is not empty
		//
		$("input.Required", sp.container).each( function() {
			if ( this.value == "" &&!$(this).hasClass("MatchPattern") ) {
				var el = this;
				errors.push( { 
					field: el,
					message: "Must be provided"
				} );
			}
		} );

		
		//
		//	Verify that the input value conforms to certain patterns
		//
		$("input.MatchPattern", sp.container).each( function() {
			if ( ( $(this).hasClass("Required") &&this.value == "" ) || this.value != "" ) {

				for ( var i = 0; i < sp.validationPatterns.length; i++ ) {
					
					var p = sp.validationPatterns[i];
					if ( $(this).hasClass( p.name ) &&!p.pattern.test(this.value) ) {
						var el = this;
						errors.push( { 
							field: el,
							message: p.error
						} );
					}	
				}

			}
		} );


		//
		//	Verify that the input value is a positive number
		//
		$("input.IsPositiveNumber", sp.container).each( function() {
			var num = parseInt( this.value, 10 );
			if ( isNaN(num) || num < 1 ) {
				var el = this;
				errors.push( { 
					field: el,
					message: "Must be a positive number"
				} );
			}
		} );
		
		
		//
		//	Verify that the selected value of a select box is NOT an invalid option
		//
		$("select.CheckForValidSelection", sp.container).each( function() {
			var opt = this.options[this.selectedIndex];
			if ( $(opt).hasClass("InvalidSelection") ) {
				var el = this;
				errors.push( { 
					field: el,
					message: "Invalid option"
				} );
			}
		} );
		

		if ( errors.length > 0 ) {
			
			if ( sp.notificationMethod == "alert" ) {
				
				var eList = new StringBuffer("Please correct the following errors:\n\n");
				
				for ( var i = 0; i < errors.length; i++ ) {
					eList.append( sp.getLabel(errors[i].field) ).append(": ").append(errors[i].message).append("\n");
				}

				alert( eList.toString() );

			} else if ( sp.notificationMethod == "inline" ) {

				// remove previous error messages if any exist
				$(".ValidationErrorMessage", sp.container).remove();
				$(".FailedValidation", sp.container).removeClass("FailedValidation");
				
				for ( var i = 0; i < errors.length; i++ ) {
					
					var field = $( errors[i].field );
					$(field).addClass("FailedValidation");

					var message = '<span class="ValidationErrorMessage">'+errors[i].message+'</span>';
					if ( sp.notificationPosition == "before" ) { field.before(message); }
					else if ( sp.notificationPosition == "after" ) { field.after(message); }

				}
				
			}
			
			return false;
			
		} else {
		
			return true;
			
		}

	}
	
};



jQuery( function() { 
					
	$("form.Validated").each( function() {
		
		new NMO.Validator(this);
																		 
	} );

} );