/*
 * Form Validation: jQuery form validation plug-in v1.0 beta 2
 *
 * Copyright (c) 2006 Jörn Zaefferer
 *
 * Dual licensed under the MIT and GPL licenses:
 *   http://www.opensource.org/licenses/mit-license.php
 *   http://www.gnu.org/licenses/gpl.html
 */
jQuery.extend(jQuery.fn, {
	validate: function( options ) {
		var validator = new jQuery.validator( options, this );
		validator.elements = this.find(":input:not(:submit):not(:reset)").focus(function() {
			validator.lastActive = this;
		});
		if ( validator.settings.onsubmit ) {
			this.submit( function( event ) {
				if ( validator.settings.debug )
					event.preventDefault();
				return validator.form();
			});
		}
		if ( validator.settings.event ) {
			validator.elements.bind( validator.settings.event, function() {
				validator.element(this);
			} );
		}
		return validator;
	},
	push: function( t ) {
		return this.setArray( jQuery.merge( this.get(), t ) );
	},
	forId: function( id ) {
		return this.filter( "[@for=" + id + "]" );
	}
});
jQuery.extend(jQuery.expr[":"], {
	blank: "!jQuery.trim(a.value)",
	filled: "!!jQuery.trim(a.value)"
});
jQuery.validator = function( options, form ) {
	this.settings = jQuery.extend( {}, jQuery.validator.defaults, options );
	this.currentForm = form[0];
	this.labelContainer = this.settings.errorLabelContainer;
	this.errorContext = this.labelContainer.length && this.labelContainer || form;
	this.containers = this.settings.errorContainer.add( this.settings.errorLabelContainer );
	this.reset();
};
jQuery.extend(jQuery.validator, {
	defaults: {
		messages: {},
		errorClass: "error",
		focusInvalid: true,
		errorContainer: jQuery( [] ),
		errorLabelContainer: jQuery( [] ),
		onsubmit: true
	},
	setDefaults: function(settings) {
		jQuery.extend( jQuery.validator.defaults, settings );
	},
	messages: {
		required: "This field is required.",
		maxLength: "Please enter a value no longer then {0} characters.",
		minLength: "Please enter a value of at least {0} characters.",
		rangeLength: "Please enter a value between {0} and {1} characters long.",
		email: "Please enter a valid email address.",
		url: "Please enter a valid URL.",
		date: "Please enter a valid date.",
		dateISO: "Please enter a valid date (ISO).",
		dateDE: "Bitte geben Sie ein g�ltiges Datum ein.",
		number: "Please enter a valid number.",
		numberDE: "Bitte geben Sie eine Nummer ein.",
		digits: "Please enter only digits",
		equalTo: "Please enter the same value again.",
		rangeValue: "Please enter a value between {0} and {1}.",
		maxValue: "Please enter a value less than or equal to {0}.",
		minValue: "Please enter a value greater than or equal to {0}."
	},
	prototype: {
		form: function() {
			this.prepareForm();
			for ( var i = 0, element; element = this.elements[i++]; ) {
				this.check( element );
			}
	    testvalid = this.valid();
		  this.currentForm.valid.value=testvalid;
		  return testvalid;				
		},
		element: function( element ) {
			this.prepareElement( element );
			this.check( element );
			this.showErrors();
		},
		showErrors: function(errors) {
			if(errors)
				jQuery.extend(this.errorList, errors);
			this.settings.showErrors
				? this.settings.showErrors( this.errorList, this )
				: this.defaultShowErrors();
		},
		resetForm: function() {
			if( jQuery.fn.resetForm )
				jQuery( this.currentForm ).resetForm();
			this.prepareForm();
			this.hideErrors();
			this.elements.removeClass( this.settings.errorClass );
		},
		clean: function( selector ) {
			return jQuery( selector )[0];
		},
		errors: function() {
			return jQuery( "label." + this.settings.errorClass, this.errorContext );
		},
		reset: function( element ) {
			this.errorList = {};
			this.toShow = $( [] );
			this.toHide = $( [] );
		},
		prepareForm: function() {
			this.reset();
			this.toHide = this.errors().push( this.containers );
			this.toShow.push( this.containers );
		},
		prepareElement: function( element ) {
			this.reset();
			this.toHide = this.errors().forId( this.findId( this.clean( element ) ) );
		},
		check: function( element ) {
			element = this.clean( element );
			jQuery( element ).removeClass( this.settings.errorClass );
			var rules = this.rules( element );
			for( var i = 0, rule; rule = rules[i++]; ) {
				try {
					var result = jQuery.validator.methods[rule.method]( jQuery.trim(element.value), element, rule.parameters );
					if( result === -1 )
						break;
					if( !result ) {
						jQuery(element).addClass( this.settings.errorClass );
						this.formatAndAdd( rule, element);
						break;
					}
				} catch(e) {
					this.settings.debug && window.console && console.error("exception occured when checking element " + element.id
						 + ", check the '" + rule.method + "' method");
					throw e;
				}
			}
		},
		message: function( id, rule ) {
			var m = this.settings.messages[id];
			return m && (m.constructor == String
				? m
				: m[rule.method]);
		},
		formatAndAdd: function( rule, element) {
			var id = this.findId( element ),
				param = rule.parameters;
			this.errorList[id] = (
					element.title
					|| this.message(id, rule)
					|| jQuery.validator.messages[rule.method]
					|| "<strong>Warning: No message defined for " + id + "</strong>"
				)
				.replace( "{0}", (param.constructor == Array
					? param[0]
					: param) || "" )
				.replace( "{1}", param[1] || "" );
		},
		valid: function() {
			if ( this.countErrors() ) {
				this.showErrors();
				return false;
			} else {
				this.hideErrors();
				if ( this.settings.submitHandler ) {
					this.settings.submitHandler( this.currentForm );
					return false;
				}
				return true;
			}
		},
		countErrors: function() {
			var count = 0;
			jQuery.each( this.errorList, function() {
				count++;
			} );			
			return count;
		},
		hideErrors: function() {
			this.toggle( "Hide" );
		},
		toggle: function(that) {
			var self = this;
			function which() {
				return self["to" + that];
			}
			if ( this.settings.wrapper ) {
				which().push( which().parents( this.settings.wrapper ) );
			}
			which()[that.toLowerCase()]();
			return this;
		},
		defaultShowErrors: function() {
			var first = true;
			for ( var elementID in this.errorList ) {
				if( first && this.settings.focusInvalid ) {
					// check if the last focused element is invalid
					if( this.lastActive && this.errorList[this.lastActive.id])
						// focus it
						this.lastActive.focus();
					// otherwise, find the firt invalid lement
					else {
						// IE throws an exception when focusing hidden element
						try {
							// focus the first invalid element
							var element = jQuery("#"+elementID);
							// radio/checkbox doesn't have an ID
							if(element.length)
								element[0].focus();
						} catch(e) { this.settings.debug && window.console && console.error(e); }
					}
					first = false;
				}
				// display the error label for the first failed method
				this.showError( elementID, this.errorList[elementID] );
			}
			this.toHide = this.toHide.not( this.toShow );
			this.toggle( "Hide" ).toggle( "Show" );
		},
		showError: function(id, message) {
			var error = this.errors().forId(id);
			if ( error.length ) {
				// check if we have a generated label, replace the message then
				if( error.attr("generated") ) {
					error.html(message);
				}
			} else {
				// create label
				error = jQuery("<label>").attr({"for": id, generated: true}).addClass(this.settings.errorClass).html(message);
				if ( this.settings.wrapper ) {
					// make sure the element is visible, even in IE
					// actually showing the wrapped element is handled elsewhere
					error = error.hide().show().wrap("<" + this.settings.wrapper + ">").parent();
				}
				if ( !this.labelContainer.append(error).length )
					this.settings.errorPlacement
						? this.settings.errorPlacement(error, jQuery("#" + id) )
						: error.insertAfter("#" + id);
			}
			this.toShow.push(error);
		},
		rules: function( element ) {
			if( !this.data( element ) )
				return [];
			var rules = [];
			jQuery.each( this.data(element), function(key, value) {
				rules[rules.length] = {
					method: key,
					parameters: value
				};
			} );
			return rules;
		},
		data: function( element ) {
			return this.settings.rules
				? this.settings.rules[this.findId(element)]
				: this.settings.meta
					? jQuery(element).data()[ this.settings.meta ]
					: jQuery(element).data();
		},
		findId: function(element) {
			var id = ( /radio|checkbox/i.test(element.type) )
				? element.name
				: element.id;
			// generate id when none is found
			if(!id) {
				var formId = element.form.id,
					idcleanup = /[^a-zA-Z0-9\-_]/g;
				id = element.id = (formId ? formId.replace(idcleanup, "") : "") + element.name.replace(idcleanup, "");
			}
			return id;
		}
	},
	getLength: function(value, element) {
		switch( element.nodeName.toLowerCase() ) {
		case 'select':
			return jQuery("option:selected", element).length;
		case 'input':
			if( /radio|checkbox/i.test(element.type) )
				return jQuery(element.form || document).find('[@name=' + element.name + ']:checked').length;
		}
		return value.length;
	},
	depend: function(param, element) {
		return this.dependTypes[typeof param]
			? this.dependTypes[typeof param](param, element)
			: true;
	},
	dependTypes: {
		"boolean": function(param, element) {
			return param;
		},
		"string": function(param, element) {
			return !!jQuery(param, element.form).length;
		},
		"function": function(param, element) {
			return param(element);
		}
	},
	methods: {
		required: function(value, element, param) {
			// check if dependency is met
			if ( !jQuery.validator.depend(param, element) )
				return -1;
			switch( element.nodeName.toLowerCase() ) {
			case 'select':
				var options = jQuery("option:selected", element);
				return options.length > 0 && ( element.type == "select-multiple" || options[0].value.length > 0);
			case 'input':
				switch( element.type.toLowerCase() ) {
				case 'checkbox':
				case 'radio':
					return jQuery.validator.getLength(value, element) > 0;
				}
			default:
				return value.length > 0;
			}
		},
		minLength: function(value, element, param) {
			var length = jQuery.validator.getLength(value, element);
			return !jQuery.validator.methods.required(value, element) || length >= param;
		},
		maxLength: function(value, element, param) {
			var length = jQuery.validator.getLength(value, element);
			return !jQuery.validator.methods.required(value, element) || length <= param;
		},
		rangeLength: function(value, element, param) {
			var length = jQuery.validator.getLength(value, element);
			return !jQuery.validator.methods.required(value, element) || ( length >= param[0] && length <= param[1] );
		},
		minValue: function( value, element, param ) {
			return !jQuery.validator.methods.required(value, element) || value >= param;
		},
		maxValue: function( value, element, param ) {
			return !jQuery.validator.methods.required(value, element) || value <= param;
		},
		rangeValue: function( value, element, param ) {
			return !jQuery.validator.methods.required(value, element) || ( value >= param[0] && value <= param[1] );
		},
		email: function(value, element) {
			return !jQuery.validator.methods.required(value, element) || /^[\w-\.]+@([\w-]+\.)+[\w-]{2,4}$/i.test(value);
		},
		url: function(value, element) {
			return !jQuery.validator.methods.required(value, element) || /^(https?|ftp):\/\/[A-Z0-9](\.?[A-Z0-9ÄÜÖ][A-Z0-9_\-ÄÜÖ]*)*(\/([A-Z0-9ÄÜÖ][A-Z0-9_\-\.ÄÜÖ]*)?)*(\?([A-Z0-9ÄÜÖ][A-Z0-9_\-\.%\+=&ÄÜÖ]*)?)?$/i.test(value);
		},
		date: function(value, element) {
			return !jQuery.validator.methods.required(value, element) || !/Invalid|NaN/.test(new Date(value));
		},
		dateISO: function(value, element) {
			return !jQuery.validator.methods.required(value, element) || /^\d{4}[/-]\d{1,2}[/-]\d{1,2}$/.test(value);
		},
		dateDE: function(value, element) {
			return !jQuery.validator.methods.required(value, element) || /^\d\d?\.\d\d?\.\d\d\d?\d?$/.test(value);
		},
		number: function(value, element) {
			return !jQuery.validator.methods.required(value, element) || /^-?[,0-9]+(\.\d+)?$/.test(value); 
		},
		numberDE: function(value, element) {
			return !jQuery.validator.methods.required(value, element) || /^-?[\.0-9]+(,\d+)?$/.test(value);
		},
		digits: function(value, element) {
			return !jQuery.validator.methods.required(value, element) || /^\d+$/.test(value);
		},
		equalTo: function(value, element, param) {
			// strings read from metadata have typeof object, convert to string
			return value == jQuery(""+param).val();
		}
	},
	addMethod: function(name, method, message) {
		jQuery.validator.methods[name] = method;
		jQuery.validator.messages[name] = message;
	}
});