vitro/webapp/web/js/jquery.fix.clone.js

// Textarea and select clone() bug workaround | Spencer Tipping
// Licensed under the terms of the MIT source code license

// Motivation.
// jQuery's clone() method works in most cases, but it fails to copy the value of textareas and select elements. This patch replaces jQuery's clone() method with a wrapper that fills in the
// values after the fact.

// An interesting error case submitted by Piotr Przybył: If two <select> options had the same value, the clone() method would select the wrong one in the cloned box. The fix, suggested by Piotr
// and implemented here, is to use the selectedIndex property on the <select> box itself rather than relying on jQuery's value-based val().

(function (original) {
  jQuery.fn.clone = function () {
    var result = original.apply(this, arguments),
        my_textareas = this.find('textarea').add(this.filter('textarea')),
        result_textareas = result.find('textarea').add(this.filter('textarea')),
        my_selects = this.find('select').add(this.filter('select')),
        result_selects = result.find('select').add(this.filter('select'));

    for (var i = 0, l = my_textareas.length; i < l; ++i) $(result_textareas[i]).val($(my_textareas[i]).val());
    for (var i = 0, l = my_selects.length; i < l; ++i) result_selects[i].selectedIndex = my_selects[i].selectedIndex;

    return result;
  };
}) (jQuery.fn.clone);

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