/**

 * $Id: validate.js 520 2008-01-07 16:30:32Z spocke $

 *

 * Various form validation methods.

 *

 * @author Moxiecode

 * @copyright Copyright © 2004-2008, Moxiecode Systems AB, All rights reserved.

 */

/**

	// String validation:

	if (!Validator.isEmail('myemail'))

		alert('Invalid email.');

	// Form validation:

	var f = document.forms['myform'];

	if (!Validator.isEmail(f.myemail))

		alert('Invalid email.');

*/

var Validator = {

	isEmail : function(s) {

		return this.test(s, '^[-!#$%&\'*+\\./0-9=?A-Z^_`a-z{|}~]+@[-!#$%&\'*+\\/0-9=?A-Z^_`a-z{|}~]+\.[-!#$%&\'*+\\./0-9=?A-Z^_`a-z{|}~]+$');

	},

	isAbsUrl : function(s) {

		return this.test(s, '^(news|telnet|nttp|file|http|ftp|https)://[-A-Za-z0-9\\.]+\\/?.*$');

	},

	isSize : function(s) {

		return this.test(s, '^[0-9]+(px|%)?$');

	},

	isId : function(s) {

		return this.test(s, '^[A-Za-z_]([A-Za-z0-9_])*$');

	},

	isEmpty : function(s) {

		var nl, i;

		if (s.nodeName == 'SELECT' && s.selectedIndex < 1)

			return true;

		if (s.type == 'checkbox' && !s.checked)

			return true;

		if (s.type == 'radio') {

			for (i=0, nl = s.form.elements; i<nl.length; i++) {

				if (nl[i].type == "radio" && nl[i].name == s.name && nl[i].checked)

					return false;

			}

			return true;

		}

		return new RegExp('^\\s*$').test(s.nodeType == 1 ? s.value : s);

	},

	isNumber : function(s, d) {

		return !isNaN(s.nodeType == 1 ? s.value : s) && (!d || !this.test(s, '^-?[0-9]*\\.[0-9]*$'));

	},

	test : function(s, p) {

		s = s.nodeType == 1 ? s.value : s;

		return s == '' || new RegExp(p).test(s);

	}

};

var AutoValidator = {

	settings : {

		id_cls : 'id',

		int_cls : 'int',

		url_cls : 'url',

		number_cls : 'number',

		email_cls : 'email',

		size_cls : 'size',

		required_cls : 'required',

		invalid_cls : 'invalid',

		min_cls : 'min',

		max_cls : 'max'

	},

	init : function(s) {

		var n;

		for (n in s)

			this.settings[n] = s[n];

	},

	validate : function(f) {

		var i, nl, s = this.settings, c = 0;

		nl = this.tags(f, 'label');

		for (i=0; i<nl.length; i++)

			this.removeClass(nl[i], s.invalid_cls);

		c += this.validateElms(f, 'input');

		c += this.validateElms(f, 'select');

		c += this.validateElms(f, 'textarea');

		return c == 3;

	},

	invalidate : function(n) {

		this.mark(n.form, n);

	},

	reset : function(e) {

		var t = new Array('label', 'input', 'select', 'textarea');

		var i, j, nl, s = this.settings;

		if (e == null)

			return;

		for (i=0; i<t.length; i++) {

			nl = this.tags(e.form ? e.form : e, t[i]);

			for (j=0; j<nl.length; j++)

				this.removeClass(nl[j], s.invalid_cls);

		}

	},

	validateElms : function(f, e) {

		var nl, i, n, s = this.settings, st = true, va = Validator, v;

		nl = this.tags(f, e);

		for (i=0; i<nl.length; i++) {

			n = nl[i];

			this.removeClass(n, s.invalid_cls);

			if (this.hasClass(n, s.required_cls) && va.isEmpty(n))

				st = this.mark(f, n);

			if (this.hasClass(n, s.number_cls) && !va.isNumber(n))

				st = this.mark(f, n);

			if (this.hasClass(n, s.int_cls) && !va.isNumber(n, true))

				st = this.mark(f, n);

			if (this.hasClass(n, s.url_cls) && !va.isAbsUrl(n))

				st = this.mark(f, n);

			if (this.hasClass(n, s.email_cls) && !va.isEmail(n))

				st = this.mark(f, n);

			if (this.hasClass(n, s.size_cls) && !va.isSize(n))

				st = this.mark(f, n);

			if (this.hasClass(n, s.id_cls) && !va.isId(n))

				st = this.mark(f, n);

			if (this.hasClass(n, s.min_cls, true)) {

				v = this.getNum(n, s.min_cls);

				if (isNaN(v) || parseInt(n.value) < parseInt(v))

					st = this.mark(f, n);

			}

			if (this.hasClass(n, s.max_cls, true)) {

				v = this.getNum(n, s.max_cls);

				if (isNaN(v) || parseInt(n.value) > parseInt(v))

					st = this.mark(f, n);

			}

		}

		return st;

	},

	hasClass : function(n, c, d) {

		return new RegExp('\\b' + c + (d ? '[0-9]+' : '') + '\\b', 'g').test(n.className);

	},

	getNum : function(n, c) {

		c = n.className.match(new RegExp('\\b' + c + '([0-9]+)\\b', 'g'))[0];

		c = c.replace(/[^0-9]/g, '');

		return c;

	},

	addClass : function(n, c, b) {

		var o = this.removeClass(n, c);

		n.className = b ? c + (o != '' ? (' ' + o) : '') : (o != '' ? (o + ' ') : '') + c;

	},

	removeClass : function(n, c) {

		c = n.className.replace(new RegExp("(^|\\s+)" + c + "(\\s+|$)"), ' ');

		return n.className = c != ' ' ? c : '';

	},

	tags : function(f, s) {

		return f.getElementsByTagName(s);

	},

	mark : function(f, n) {

		var s = this.settings;

		this.addClass(n, s.invalid_cls);

		this.markLabels(f, n, s.invalid_cls);

		return false;

	},

	markLabels : function(f, n, ic) {

		var nl, i;

		nl = this.tags(f, "label");

		for (i=0; i<nl.length; i++) {

			if (nl[i].getAttribute("for") == n.id || nl[i].htmlFor == n.id)

				this.addClass(nl[i], ic);

		}

		return null;

	}

};