/*!
 * jQuery Plugin: Are-You-Sure (Dirty Form Detection)
 * https://github.com/codedance/jquery.AreYouSure/
 *
 * Copyright (c) 2012-2014, Chris Dance and PaperCut Software http://www.papercut.com/
 * Dual licensed under the MIT or GPL Version 2 licenses.
 * http://jquery.org/license
 *
 * Author:  chris.dance@papercut.com
 * Version: 1.9.0
 * Date:    13th August 2014
 */
(function($) {

    $.fn.areYouSure = function(options) {

        var settings = $.extend({
            'message': 'You have unsaved changes!',
            'dirtyClass': 'dirty',
            'change': null,
            'silent': false,
            'addRemoveFieldsMarksDirty': false,
            'fieldEvents': 'change keyup propertychange input',
            'fieldSelector': ":input:not(input[type=submit]):not(input[type=button])"
        }, options);

        var getValue = function($field) {
            if ($field.hasClass('ays-ignore') ||
                $field.hasClass('aysIgnore') ||
                $field.attr('data-ays-ignore') ||
                $field.attr('name') === undefined) {
                return null;
            }

            if ($field.is(':disabled')) {
                return 'ays-disabled';
            }

            var val;
            var type = $field.attr('type');
            if ($field.is('select')) {
                type = 'select';
            }

            switch (type) {
                case 'checkbox':
                case 'radio':
                    val = $field.is(':checked');
                    break;
                case 'select':
                    val = '';
                    $field.find('option')
                        .each(function(o) {
                            var $option = $(this);
                            if ($option.is(':selected')) {
                                val += $option.val();
                            }
                        });
                    break;
                default:
                    val = $field.val();
            }

            return val;
        };

        var storeOrigValue = function($field) {
            $field.data('ays-orig', getValue($field));
        };

        var checkForm = function(evt) {

            var isFieldDirty = function($field) {
                var origValue = $field.data('ays-orig');
                if (undefined === origValue) {
                    return false;
                }
                return (getValue($field) != origValue);
            };

            var $form = ($(this)
                    .is('form')) ?
                $(this) :
                $(this)
                .parents('form');

            // Test on the target first as it's the most likely to be dirty
            if (isFieldDirty($(evt.target))) {
                setDirtyStatus($form, true);
                return;
            }

            $fields = $form.find(settings.fieldSelector);

            if (settings.addRemoveFieldsMarksDirty) {
                // Check if field count has changed
                var origCount = $form.data("ays-orig-field-count");
                if (origCount != $fields.length) {
                    setDirtyStatus($form, true);
                    return;
                }
            }

            // Brute force - check each field
            var isDirty = false;
            $fields.each(function() {
                $field = $(this);
                if (isFieldDirty($field)) {
                    isDirty = true;
                    return false; // break
                }
            });

            setDirtyStatus($form, isDirty);
        };

        var initForm = function($form) {
            var fields = $form.find(settings.fieldSelector);
            $(fields)
                .each(function() { storeOrigValue($(this)); });
            $(fields)
                .off(settings.fieldEvents, checkForm);
            $(fields)
                .on(settings.fieldEvents, checkForm);
            $form.data("ays-orig-field-count", $(fields)
                .length);
            setDirtyStatus($form, false);
        };

        var setDirtyStatus = function($form, isDirty) {
            var changed = isDirty != $form.hasClass(settings.dirtyClass);
            $form.toggleClass(settings.dirtyClass, isDirty);

            // Fire change event if required
            if (changed) {
                if (settings.change) settings.change.call($form, $form);

                if (isDirty) $form.trigger('dirty.areYouSure', [$form]);
                if (!isDirty) $form.trigger('clean.areYouSure', [$form]);
                $form.trigger('change.areYouSure', [$form]);
            }
        };

        var rescan = function() {
            var $form = $(this);
            var fields = $form.find(settings.fieldSelector);
            $(fields)
                .each(function() {
                    var $field = $(this);
                    if (!$field.data('ays-orig')) {
                        storeOrigValue($field);
                        $field.on(settings.fieldEvents, checkForm);
                    }
                });
            // Check for changes while we're here
            $form.trigger('checkform.areYouSure');
        };

        var reinitialize = function() {
            initForm($(this));
        }

        if (!settings.silent && !window.aysUnloadSet) {
            window.aysUnloadSet = true;
            $(window)
                .on('beforeunload', function() {
                    $dirtyForms = $("form")
                        .filter('.' + settings.dirtyClass);
                    if ($dirtyForms.length == 0) {
                        return;
                    }
                    // Prevent multiple prompts - seen on Chrome and IE
                    if (navigator.userAgent.toLowerCase()
                        .match(/msie|chrome/)) {
                        if (window.aysHasPrompted) {
                            return;
                        }
                        window.aysHasPrompted = true;
                        window.setTimeout(function() { window.aysHasPrompted = false; }, 900);
                    }

                    return settings.message;
                });
        }

        return this.each(function(elem) {
            if (!$(this)
                .is('form')) {
                return;
            }
            var $form = $(this);

            $form.submit(function() {
                $form.removeClass(settings.dirtyClass);
            });
            $form.on('reset', function() { setDirtyStatus($form, false); });
            // Add a custom events
            $form.on('rescan.areYouSure', rescan);
            $form.on('reinitialize.areYouSure', reinitialize);
            $form.on('checkform.areYouSure', checkForm);
            initForm($form);
        });
    };
})(jQuery);

• [F] are-you-sure.jquery.json
  Delete
• [F] ays-beforeunload-shim.js
  Delete
• [F] jquery.are-you-sure.js
  Delete