jsTree checkbox'ы без хуйни

/*
 * jsTree checkbox for attributes plugin 0.1
 * Inserts checkboxes in front of every node
 * Depends on the ui plugin
 * DON'T KNOW IF STILL DOES NOT WORK NICELY WITH MULTITREE DRAG'N'DROP
 */
(function ($) {
    $.jstree.plugin("checkbox-without-parent-child-interaction", {
        __init : function () {
            // this.select_node = this.deselect_node = this.deselect_all = $.noop;
            // this.get_selected = this.get_checked;

            this.get_container()
                .bind("open_node.jstree create_node.jstree clean_node.jstree", $.proxy(function (e, data) {
                        this._prepare_checkboxes(data.rslt.obj);
                    }, this))
                .bind("loaded.jstree", $.proxy(function (e) {
                        this._prepare_checkboxes();
                    }, this))
                .delegate("ins.jstree-checkbox", "click.jstree", $.proxy(function (e) {
                        if(this._get_node(e.target).hasClass("jstree-checked")) { this.uncheck_node(e.target); }
                        else { this.check_node(e.target); }
                        e.preventDefault();
                    }, this));
        },
        __destroy : function () {
            this.get_container().find(".jstree-checkbox").remove();
        },
        _fn : {
            _prepare_checkboxes : function (obj) {
                obj = !obj || obj == -1 ? this.get_container() : this._get_node(obj);
                var c, _this = this, t;
                obj.each(function () {
                    t = $(this);
                    c = t.is("li") && t.hasClass("jstree-checked") ? "jstree-checked" : "jstree-unchecked";
                    t.find("a").not(":has(.jstree-checkbox)").prepend("<ins class='jstree-checkbox'>&#160;</ins>").parent().not(".jstree-checked, .jstree-unchecked").addClass(c);
                });
                if(obj.is("li")) { this._repair_state(obj); }
                else { obj.find("> ul > li").each(function () { _this._repair_state(this); }); }
            },
            change_state : function (obj, state) {
                obj = this._get_node(obj);
                state = (state === false || state === true) ? state : obj.hasClass("jstree-checked");
                if (obj)
                {
                    if (state) { obj.removeClass("jstree-checked jstree-undetermined").addClass("jstree-unchecked"); }
                    else { obj.removeClass("jstree-unchecked jstree-undetermined").addClass("jstree-checked"); }
                }
                this.__callback(obj);
            },
            check_node : function (obj) {
                this.change_state(obj, false);
            },
            uncheck_node : function (obj) {
                this.change_state(obj, true);
            },

            is_checked : function(obj) {
                obj = this._get_node(obj);
                return obj.length ? obj.is(".jstree-checked") : false;
            },
            get_checked : function (obj) {
                obj = !obj || obj === -1 ? this.get_container() : this._get_node(obj);
                return obj.find("> ul > .jstree-checked, .jstree-undetermined > ul > .jstree-checked");
            },
            get_unchecked : function (obj) {
                obj = !obj || obj === -1 ? this.get_container() : this._get_node(obj);
                return obj.find("> ul > .jstree-unchecked, .jstree-undetermined > ul > .jstree-unchecked");
            },

            show_checkboxes : function () { this.get_container().children("ul").removeClass("jstree-no-checkboxes"); },
            hide_checkboxes : function () { this.get_container().children("ul").addClass("jstree-no-checkboxes"); },

            _repair_state : function (obj) {
                obj = this._get_node(obj);
                if(!obj.length) { return; }
                var a = obj.find("> ul > .jstree-checked").length,
                    b = obj.find("> ul > .jstree-undetermined").length,
                    c = obj.find("> ul > li").length;

                if(c === 0) { if(obj.hasClass("jstree-undetermined")) { this.check_node(obj); } }
                else if(a === 0 && b === 0) { this.uncheck_node(obj); }
                else if(a === c) { this.check_node(obj); }
                else {
                    obj.parentsUntil(".jstree","li").removeClass("jstree-checked jstree-unchecked").addClass("jstree-undetermined");
                }
            },
            reselect : function () {
                if(this.data.ui) {
                    var _this = this,
                        s = this.data.ui.to_select;
                    s = $.map($.makeArray(s), function (n) { return "#" + n.toString().replace(/^#/,"").replace('\\/','/').replace('/','\\/'); });
                    this.deselect_all();
                    $.each(s, function (i, val) { _this.check_node(val); });
                    this.__callback();
                }
            }
        }
    });
})(jQuery);
//*/