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// Set caret position easily in jQuery
// Written by and Copyright of Luke Morton, 2011
// Licensed under MIT
(function ($) {
    // Behind the scenes method deals with browser
    // idiosyncrasies and such
    $.caretTo = function (el, index) {
        if (el.createTextRange) {
            var range = el.createTextRange();
            range.move("character", index);
            range.select();
        } else if (el.selectionStart != null) {
            el.focus();
            el.setSelectionRange(index, index);
        }
    };

    // The following methods are queued under fx for more
    // flexibility when combining with $.fn.delay() and
    // jQuery effects.

    // Set caret to a particular index
    $.fn.caretTo = function (index, offset) {
        return this.queue(function (next) {
            if (isNaN(index)) {
                var i = $(this).val().indexOf(index);

                if (offset === true) {
                    i += index.length;
                } else if (offset) {
                    i += offset;
                }

                $.caretTo(this, i);
            } else {
                $.caretTo(this, index);
            }

            next();
        });
    };

    // Set caret to beginning of an element
    $.fn.caretToStart = function () {
        return this.caretTo(0);
    };

    // Set caret to the end of an element
    $.fn.caretToEnd = function () {
        return this.queue(function (next) {
            $.caretTo(this, $(this).val().length);
            next();
        });
    };
}(jQuery));