/*

* Really easy field validation with Prototype

* http://tetlaw.id.au/view/javascript/really-easy-field-validation

* Andrew Tetlaw

* Version 1.5.4.1 (2007-01-05)

* 

* Copyright (c) 2007 Andrew Tetlaw

* Permission is hereby granted, free of charge, to any person

* obtaining a copy of this software and associated documentation

* files (the "Software"), to deal in the Software without

* restriction, including without limitation the rights to use, copy,

* modify, merge, publish, distribute, sublicense, and/or sell copies

* of the Software, and to permit persons to whom the Software is

* furnished to do so, subject to the following conditions:

* 

* The above copyright notice and this permission notice shall be

* included in all copies or substantial portions of the Software.

* 

* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,

* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF

* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND

* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS

* BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN

* ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN

* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE

* SOFTWARE.

* 

*/

var Validator = Class.create();



Validator.prototype = {

	initialize : function(className, error, test, options) {

		if(typeof test == 'function'){

			this.options = $H(options);

			this._test = test;

		} else {

			this.options = $H(test);

			this._test = function(){return true};

		}

		this.error = error || 'Validation failed.';

		this.className = className;

	},

	test : function(v, elm) {

		return (this._test(v,elm) && this.options.all(function(p){

			return Validator.methods[p.key] ? Validator.methods[p.key](v,elm,p.value) : true;

		}));

	}

}

Validator.methods = {

	pattern : function(v,elm,opt) {return Validation.get('IsEmpty').test(v) || opt.test(v)},

	minLength : function(v,elm,opt) {return v.length >= opt},

	maxLength : function(v,elm,opt) {return v.length <= opt},

	min : function(v,elm,opt) {return v >= parseFloat(opt)}, 

	max : function(v,elm,opt) {return v <= parseFloat(opt)},

	notOneOf : function(v,elm,opt) {return $A(opt).all(function(value) {

		return v != value;

	})},

	oneOf : function(v,elm,opt) {return $A(opt).any(function(value) {

		return v == value;

	})},

	is : function(v,elm,opt) {return v == opt},

	isNot : function(v,elm,opt) {return v != opt},

	equalToField : function(v,elm,opt) {return v == $F(opt)},

	notEqualToField : function(v,elm,opt) {return v != $F(opt)},

	include : function(v,elm,opt) {return $A(opt).all(function(value) {

		return Validation.get(value).test(v,elm);

	})}

}



var Validation = Class.create();



Validation.prototype = {

	initialize : function(form, options){

		this.options = Object.extend({

			onSubmit : true,

			stopOnFirst : false,

			immediate : false,

			focusOnError : true,

			useTitles : false,

			onFormValidate : function(result, form) {},

			onElementValidate : function(result, elm) {}

		}, options || {});

		this.form = $(form);

		if(this.options.onSubmit) Event.observe(this.form,'submit',this.onSubmit.bind(this),false);

		if(this.options.immediate) {

			var useTitles = this.options.useTitles;

			var callback = this.options.onElementValidate;

			Form.getElements(this.form).each(function(input) { // Thanks Mike!

				Event.observe(input, 'blur', function(ev) { Validation.validate(Event.element(ev),{useTitle : useTitles, onElementValidate : callback}); });

			});

		}

	},

	onSubmit :  function(ev){

		if(!this.validate()) Event.stop(ev);

	},

	validate : function() {

		var result = false;

		var useTitles = this.options.useTitles;

		var callback = this.options.onElementValidate;

		if(this.options.stopOnFirst) {

			result = Form.getElements(this.form).all(function(elm) { return Validation.validate(elm,{useTitle : useTitles, onElementValidate : callback}); });

		} else {

			result = Form.getElements(this.form).collect(function(elm) { return Validation.validate(elm,{useTitle : useTitles, onElementValidate : callback}); }).all();

		}

		if(!result && this.options.focusOnError) {

			Form.getElements(this.form).findAll(function(elm){return $(elm).hasClassName('validation-failed')}).first().focus()

		}

		this.options.onFormValidate(result, this.form);

		return result;

	},

	reset : function() {

		Form.getElements(this.form).each(Validation.reset);

	}

}



Object.extend(Validation, {

	validate : function(elm, options){

		options = Object.extend({

			useTitle : false,

			onElementValidate : function(result, elm) {}

		}, options || {});

		elm = $(elm);

		var cn = elm.classNames();

		return result = cn.all(function(value) {

			var test = Validation.test(value,elm,options.useTitle);

			options.onElementValidate(test, elm);

			return test;

		});

	},

	test : function(name, elm, useTitle) {

		var v = Validation.get(name);

		var prop = '__advice'+name.camelize();

		try {

		if(Validation.isVisible(elm) && !v.test($F(elm), elm)) {

			if(!elm[prop]) {

				var advice = Validation.getAdvice(name, elm);

				if(advice == null) {

					var errorMsg = useTitle ? ((elm && elm.title) ? elm.title : v.error) : v.error;

					advice = '<div class="validation-advice" id="advice-' + name + '-' + Validation.getElmID(elm) +'" style="display:none">' + errorMsg + '</div>'

					switch (elm.type.toLowerCase()) {

						case 'checkbox':

						case 'radio':

							var p = elm.parentNode;

							if(p) {

								new Insertion.Bottom(p, advice);

							} else {

								new Insertion.After(elm, advice);

							}

							break;

						default:

							new Insertion.After(elm, advice);

				    }

					advice = Validation.getAdvice(name, elm);

				}

				if(typeof Effect == 'undefined') {

					advice.style.display = 'block';

				} else {

					new Effect.Appear(advice, {duration : 1 });

				}

			}

			elm[prop] = true;

			elm.removeClassName('validation-passed');

			elm.addClassName('validation-failed');

			return false;

		} else {

			var advice = Validation.getAdvice(name, elm);

			if(advice != null) advice.hide();

			elm[prop] = '';

			elm.removeClassName('validation-failed');

			elm.addClassName('validation-passed');

			return true;

		}

		} catch(e) {

			throw(e)

		}

	},

	isVisible : function(elm) {

		while(elm.tagName != 'BODY') {

			if(!$(elm).visible()) return false;

			elm = elm.parentNode;

		}

		return true;

	},

	getAdvice : function(name, elm) {

		return $('advice-' + name + '-' + Validation.getElmID(elm)) || $('advice-' + Validation.getElmID(elm));

	},

	getElmID : function(elm) {

		return elm.id ? elm.id : elm.name;

	},

	reset : function(elm) {

		elm = $(elm);

		var cn = elm.classNames();

		cn.each(function(value) {

			var prop = '__advice'+value.camelize();

			if(elm[prop]) {

				var advice = Validation.getAdvice(value, elm);

				advice.hide();

				elm[prop] = '';

			}

			elm.removeClassName('validation-failed');

			elm.removeClassName('validation-passed');

		});

	},

	add : function(className, error, test, options) {

		var nv = {};

		nv[className] = new Validator(className, error, test, options);

		Object.extend(Validation.methods, nv);

	},

	addAllThese : function(validators) {

		var nv = {};

		$A(validators).each(function(value) {

				nv[value[0]] = new Validator(value[0], value[1], value[2], (value.length > 3 ? value[3] : {}));

			});

		Object.extend(Validation.methods, nv);

	},

	get : function(name) {

		return  Validation.methods[name] ? Validation.methods[name] : Validation.methods['_LikeNoIDIEverSaw_'];

	},

	methods : {

		'_LikeNoIDIEverSaw_' : new Validator('_LikeNoIDIEverSaw_','',{})

	}

});



Validation.add('IsEmpty', '', function(v) {

				return  ((v == null) || (v.length == 0)); // || /^\s+$/.test(v));

			});



Validation.addAllThese([

	['required', 'This is a required field.', function(v) {

				return !Validation.get('IsEmpty').test(v);

			}],

	['validate-number', 'Please enter a valid number in this field.', function(v) {

				return Validation.get('IsEmpty').test(v) || (!isNaN(v) && !/^\s+$/.test(v));

			}],

	['validate-digits', 'Please use numbers only in this field. please avoid spaces or other characters such as dots or commas.', function(v) {

				return Validation.get('IsEmpty').test(v) ||  !/[^\d]/.test(v);

			}],

	['validate-alpha', 'Please use letters only (a-z) in this field.', function (v) {

				return Validation.get('IsEmpty').test(v) ||  /^[a-zA-Z]+$/.test(v)

			}],

	['validate-alphanum', 'Please use only letters (a-z) or numbers (0-9) only in this field. No spaces or other characters are allowed.', function(v) {

				return Validation.get('IsEmpty').test(v) ||  !/\W/.test(v)

			}],

	['validate-date', 'Please enter a valid date.', function(v) {

				var test = new Date(v);

				return Validation.get('IsEmpty').test(v) || !isNaN(test);

			}],

	['validate-email', 'Please enter a valid email address. For example fred@domain.com', function (v) {

				return Validation.get('IsEmpty').test(v) || /\w{1,}[@][\w\-]{1,}([.]([\w\-]{1,})){1,3}$/.test(v)

			}],

	['required-email', 'Please enter a valid email address. For example frid@domain.com', function (v) {

				return !Validation.get('IsEmpty').test(v) && /\w{1,}[@][\w\-]{1,}([.]([\w\-]{1,})){1,3}$/.test(v)

			}],

	['validate-url', 'Required: please enter a valid URL.', function (v) {

				return Validation.get('IsEmpty').test(v) || /^(http|https|ftp):\/\/(([A-Z0-9][A-Z0-9_-]*)(\.[A-Z0-9][A-Z0-9_-]*)+)(:(\d+))?\/?/i.test(v)

			}],

	['required-url', 'Please enter a valid URL.', function (v) {

				return !Validation.get('IsEmpty').test(v) && /^(http|https|ftp):\/\/(([A-Z0-9][A-Z0-9_-]*)(\.[A-Z0-9][A-Z0-9_-]*)+)(:(\d+))?\/?/i.test(v)

			}],

	['validate-date-au', 'Please use this date format: dd/mm/yyyy. For example 17/03/2006 for the 17th of March, 2006.', function(v) {

				if(Validation.get('IsEmpty').test(v)) return true;

				var regex = /^(\d{2})\/(\d{2})\/(\d{4})$/;

				if(!regex.test(v)) return false;

				var d = new Date(v.replace(regex, '$2/$1/$3'));

				return ( parseInt(RegExp.$2, 10) == (1+d.getMonth()) ) && 

							(parseInt(RegExp.$1, 10) == d.getDate()) && 

							(parseInt(RegExp.$3, 10) == d.getFullYear() );

			}],

	['validate-currency-dollar', 'Please enter a valid $ amount. For example $100.00 .', function(v) {

				// [$]1[##][,###]+[.##]

				// [$]1###+[.##]

				// [$]0.##

				// [$].##

				return Validation.get('IsEmpty').test(v) ||  /^\$?\-?([1-9]{1}[0-9]{0,2}(\,[0-9]{3})*(\.[0-9]{0,2})?|[1-9]{1}\d*(\.[0-9]{0,2})?|0(\.[0-9]{0,2})?|(\.[0-9]{1,2})?)$/.test(v)

			}],

	['validate-selection', 'Please make a selection', function(v,elm){

				return elm.options ? elm.selectedIndex > 0 : !Validation.get('IsEmpty').test(v);

			}],

	['validate-one-required', 'Please select one of the above options.', function (v,elm) {

				var p = elm.parentNode;

				var options = p.getElementsByTagName('INPUT');

				return $A(options).any(function(elm) {

					return $F(elm);

				});

			}],

	['required-20','Required : max length, 20 characters',function (v){

			return 	!Validation.get('IsEmpty').test(v) && 	(v.length <= 20);												

			}],

	['required-200','Required : max length, 200 characters',function (v){

			return 	!Validation.get('IsEmpty').test(v) && 	(v.length <= 200);												

			}]

]);

	function check(x,max_length){
		var elem = x;
		var text = elem.value;
		var count = text.length;
		if(count > max_length){
			elem.value = text.substring(0,max_length);
		}
	}