/*
 * jQuery Form Validation plug-in version 1.1.3
 * Last Update : July 08, 2008
 * New features:
 * Radio Button validation
 *
 * Copyright (c) 2007 E-wave web design
 *   http://www.ewave.com.au/
 *
 * Licensed under the GPL license:
 *   http://www.gnu.org/licenses/gpl.html
 *
 * @requires jQuery v 1.2.1 or later
 * @name	formValidation
 * @usage		$('#form1').formValidation({
 *		newmask : /[0-9]{1}-[0-9]{1}/,	// 1-1
 *		err_class : 'invalidInput'
 * });
 * 
 * HTML
 * <form id="form1">
 * <input id="input1" type="text" required="true" mask="email"></input>
 * <input id="input2" type="text" required="true" mask="email" equal="input2"></input>
 * <input type="submit" value="Submit">
 * </form>
 *
 * Description
 * Validate form fields accordiing to 4 keys
 * required - check that text field is not empty. checkbox checked, and select val is not empty
 * equal - checks that field value equal to another field with this id
 * mask - compre value to mask using reg exp
 * defval - ignore default value
 *
 * Prevent Submit and Display alert when not validate and change class of field to invalid class
 * 
 * @param String version
 * 	Plugin Version
 * 
 * @param String err_class
 * 	invalid input class name
 * 
 * @param String displayAlert
 * 	display alert when submit form is invalid
 *  default true
 * 
 * @param String err_message
 * 	alert message
 * 
 * @param reg-exp email
 * 	email pattern
 * 
 * @param reg-exp domain
 * 	domain pattern
 * 
 * @param reg-exp phone
 * 	phone pattern
 * 
 * @param reg-exp zip
 * 	zip pattern
 * 
 * @param reg-exp numeric
 * 	numeric pattern
 * 
 * @param reg-exp image
 * 	image file name pattern
 * 
 * @param reg-exp pdf
 * 	pdf file name pattern
 * 
 * @param alias, required, mask, equal, defval 
 * 	validation rules map to input attributes 
 * 
 */

 if (!window.jQuery) {
	throw("jQuery must be referenced before using formValidation");
} else {
	(function() { 
		jQuery.fn.formValidation = function(settings, err_msgs) {

		var iForm = this;
		var err_list = '';

		settings = jQuery.extend({
			version			: '1.1.3',
			email			: /^([\w.])+\@(([\w])+\.)[a-zA-Z0-9]{2,}/,
			domain			: /^(http:\/\/)([\w]+\.){1,}[A-Z]{2,4}\b/gi,
			phone			: /^\+[0-9]{1,3}\.[1-9]{1,2}\.[0-9]{6,}$/gi,
			zip				: /^[0-9]{4,}$/gi,
			numeric			: /^[0-9]+$/gi,
			date			: /^((([0][1-9]|[12][0-9])\/02\/(19|20)([13579][26]|[02468][048]))|(([0][1-9]|[1][0-9]|[2][0-8])\/02\/(19|20)([02468][12356]|[013579][13579]))|((([0][1-9]|[12][0-9]|30)\/(0[469]|11)|([0][1-9]|[12][0-9]|3[01])\/(0[13578]|1[02]))\/((19|20)[0-9][0-9])))$/gi,
			image			: /[\w]+\.(gif|jpg|bmp|png|jpeg)$/gi,
			ewvt			: /[\w]+\.(htm|html|php|txt)$/gi,
			media			: /[\w]+\.(avi|mov|mpeg|wmv)$/gi,
			pdf				: /[\w]+\.(pdf)$/gi,
			enable			: false,
			err_class		: 'invalidInput',
			err_list		: false,
			alias			: 'name',
			required		: 'required',
			mask			: 'mask',
			equal			: 'equal',
			defval			: 'defval',
			err_message		: 'Please fill all required fields! (Marked with red background colour)\n',
			display_alert	: true, // onsubmit if invalid form display an error message
			on_error		: undefined // onError event
		}, settings);

		err_msgs = jQuery.extend({
			required	: 'is required',
			mask		: 'Invalid',
			equal		: 'is not equal to'
		}, err_msgs);

		return iForm.submit(function() {
			settings['enable'] = true;
			err_list = '';
			var frm = true;
			$(this).find('*').filter('input, select, textarea').each(function() {
				ret = isValid($(this));
				if (!ret) {
					frm = ret;
				}
			});
			if (!frm && settings['display_alert']) {
				alert(settings['err_message'] + err_list);
			}
			return frm;
		}).find('*').filter('input, select, textarea').each(function() {
			if ($(this).is('input[@type=checkbox]') || $(this).is('input[@type=radio]')) { // if checkbox or radio button
				$(this).click(function() {
					isValid($(this));
				}).change(function() {
					isValid($(this));
				});
			} else { // if not empty
				$(this).keyup(function() {
					isValid($(this));
				}).focus(function() {
					isValid($(this));
				}).blur(function() {
					isValid($(this));
				});
			}
		});

		function isValid(obj) { // check if field is valid
			if (!settings['enable']) {
				return true;
			}
			if (required(obj) && mask(obj) && equal(obj)) {
				obj.removeClass(settings['err_class']);
				if (settings['on_error'] && typeof settings['on_error'] == 'function') { settings['on_error'](obj[0], ''); }
				return true;
			} else {
				obj.addClass(settings['err_class']);
				if (settings['on_error'] && typeof settings['on_error'] == 'function') { settings['on_error'](obj[0], settings['err_class']); }
				return false;
			}
		}

		function required(obj) { // field is required
			if (!(obj.attr(settings['required']) == 'true')) { // if not required return true
				return true;
			}

			if (obj.is('input[@type=checkbox]')) { // if checkbox and checked
				if (obj[0].checked) {
					return true;
				}
			} else if (obj.is('input[@type=radio]')) { // if radio button and selected
				if ($('input[@name=\'' + obj[0].id + '\']:checked').val()) {
					return true;
				}
			} else if((obj.is('input') || obj.is('select') || obj.is('textarea')) && (!obj.is('button'))) { // if not empty
				if (obj.val() != '' && (!(defval(obj)))) {
					return true;
				}
			}

			if (settings['err_list']) {
				err_list += '- "' + obj.attr(settings['alias']) + '" ' + err_msgs['required'] + '\n';
			}

			return false;
		}

		function mask(obj) { // compare field to mask provided in the extend array
			tname = obj.attr('mask'); // read mask name from input field

			if (tname == undefined || obj.val() == '') {
				return true;
			}

			tmask = settings[obj.attr(settings['mask'])]; // get mask pattern from settings
			ret = tmask.test(obj.val()); // test reg exp
			ret1 = tmask.exec(obj.val());
			if (ret) {
				return true;
			}

			if (settings['err_list']) {
				err_list += '- ' + err_msgs['mask'] + ' "' + obj.attr(settings['alias']) + '"\n';
			}

			return false;
		}

		function equal(obj) { // copare field to another field read from the equal attribute
			tname = obj.attr(settings['equal']); // get comparison field
			tval = $('#' + tname).val();

			if (tname == undefined) {
				return true;
			}

			if (tval == obj.val()) {
				return true;
			}

			if (settings['err_list']) {
				err_list += '- "' + obj.attr(settings['alias']) + '" ' + err_msgs['equal'] + ' ' + $('#'+tname).attr('alias') + '\n';
			}

			return false;
		}

		function defval(obj) { // compare field with defval attr, make sure that val was altered
			tdefval = obj.attr(settings['defval']); // get comparison field
			tval = obj.val();

			if (tdefval == undefined) {
				return false;
			}

			if (tval != tdefval) {
				return false;
			}

			return true;
		}
	}
	})(jQuery);
}