/* -------------------------------------------------- *
* Collapsorz 1.1
* Updated: 04/21/09
* -------------------------------------------------- *
* Author: Aaron Kuzemchak
* URL: http://aaronkuzemchak.com/
* Copyright: 2008-2009 Aaron Kuzemchak
* License: MIT License
** -------------------------------------------------- */

(function ($) {
    $.fn.collapsorz = function (options) {
        // default settings
        var defaults = {
            toggle: "> *", // elements inside the object to toggle
            minimum: 5, // number to show in collapsed form
            showText: "Show", // text for the expand link
            hideText: "Hide", // text for the collapse link
            linkLocation: "after", // use "after" or "before" to determine where link displays
            defaultState: "collapsed", // use "collapsed" or "expanded" to show or hide items by default
            wrapLink: null // specify HTML code to wrap around the link
        };
        var options = $.extend(defaults, options);

        return this.each(function () {
            // only execute if there are more than minimum items
            if ($(options.toggle, this).length > options.minimum) {
                // setup variables
                var $obj = $(this);
                var $targets = $(options.toggle, this);

                // hide the items if necessary
                if (options.defaultState == "collapsed") {
                    $targets.filter(":gt(" + (options.minimum - 1) + ")").hide();
                }

                // append/prepend the toggle link to the object
                var $toggler = $('<a href="#" class="toggler"></a>');
                if (options.linkLocation == "before") {
                    $obj.before($toggler);
                }
                else {
                    $obj.after($toggler);
                }
                if (options.wrapLink) {
                    $toggler.wrap(options.wrapLink);
                }

                // set data, link class, and link text
                if (options.defaultState == "expanded") {
                    $obj.data("status", "expanded");
                    $toggler.addClass("expanded");
                    $toggler.html(options.hideText);
                }
                else {
                    $obj.data("status", "collapsed");
                    $toggler.addClass("collapsed");
                    $toggler.html(options.showText);
                }

                // click actions
                $toggler.click(function () {
                    if ($obj.data("status") == "collapsed") {
                        $targets.filter(":hidden").show();
                        $toggler.html(options.hideText);
                        $obj.data("status", "expanded");
                    }
                    else if ($obj.data("status") == "expanded") {
                        $targets.filter(":gt(" + (options.minimum - 1) + ")").hide();
                        $toggler.html(options.showText);
                        $obj.data("status", "collapsed");
                    }
                    $(this).toggleClass("collapsed").toggleClass("expanded");
                    return false;
                });
            }
        });
    }
})(jQuery);