(function ($) {
    $.extend($.tree.plugins, {
        "contextmenu": {
            object: $("<ul id='jstree-contextmenu' class='tree-context' />"),
            data: {
                t: false,
                a: false,
                r: false
            },

            defaults: {
                class_name: "hover",
                items: {
                    create: {
                        label: "Create",
                        icon: "create",
                        visible: function (NODE, TREE_OBJ) { if (NODE.length != 1) return 0; return TREE_OBJ.check("creatable", NODE); },
                        action: function (NODE, TREE_OBJ) { TREE_OBJ.create(false, TREE_OBJ.get_node(NODE[0])); },
                        separator_after: true
                    },
                    rename: {
                        label: "Rename",
                        icon: "rename",
                        visible: function (NODE, TREE_OBJ) { if (NODE.length != 1) return false; return TREE_OBJ.check("renameable", NODE); },
                        action: function (NODE, TREE_OBJ) { TREE_OBJ.rename(NODE); }
                    },
                    remove: {
                        label: "Delete",
                        icon: "remove",
                        visible: function (NODE, TREE_OBJ) { var ok = true; $.each(NODE, function () { if (TREE_OBJ.check("deletable", this) == false) ok = false; return false; }); return ok; },
                        action: function (NODE, TREE_OBJ) { $.each(NODE, function () { TREE_OBJ.remove(this); }); }
                    }
                }
            },
            show: function (obj, t) {
                var opts = $.extend(true, {}, $.tree.plugins.contextmenu.defaults, t.settings.plugins.contextmenu);
                obj = $(obj);
                $.tree.plugins.contextmenu.object.empty();
                var str = "";
                var cnt = 0;
                for (var i in opts.items) {
                    if (!opts.items.hasOwnProperty(i)) continue;
                    if (opts.items[i] === false) continue;
                    var r = 1;
                    if (typeof opts.items[i].visible == "function") r = opts.items[i].visible.call(null, $.tree.plugins.contextmenu.data.a, t);
                    if (r == -1) continue;
                    else cnt++;
                    if (opts.items[i].separator_before === true) str += "<li class='separator'><span>&nbsp;</span></li>";
                    str += '<li><a href="#" rel="' + i + '" class="' + i + ' ' + (r == 0 ? 'disabled' : '') + '">';

                    // updated from patch by Matt Brailsford (http://our.umbraco.org/forum/using/ui-questions/6225-Custom-icon-in-Context-menu#comment39514)
                    str += "<ins> </ins>"; str += "<span>";
                    if (opts.items[i].icon && opts.items[i].icon.indexOf("/") >= 0) {
                        str += "<div class=\"menuSpr\" style=\"background:transparent url('" + opts.items[i].icon + "') center center no-repeat;\"></div><div class='menuLabel'>" + opts.items[i].label + "</div>";
                    } else {
                        str += opts.items[i].label;
                    } 
                    str += '</span></a></li>';
                    
                    if (opts.items[i].separator_after === true) str += "<li class='separator'><span>&nbsp;</span></li>";
                }
                var tmp = obj.children("a:visible").offset();
                $.tree.plugins.contextmenu.object.attr("class", "tree-context tree-" + t.settings.ui.theme_name.toString() + "-context").html(str);
                var h = $.tree.plugins.contextmenu.object.height();
                var w = $.tree.plugins.contextmenu.object.width();
                var x = tmp.left;
                var y = tmp.top + parseInt(obj.children("a:visible").height()) + 2;
                var max_y = $(window).height() + $(window).scrollTop();
                var max_x = $(window).width() + $(window).scrollLeft();
                if (y + h > max_y) y = Math.max((max_y - h - 2), 0);
                if (x + w > max_x) x = Math.max((max_x - w - 2), 0);
                $.tree.plugins.contextmenu.object.css({ "left": (x), "top": (y) }).fadeIn("fast");
            },
            hide: function () {
                if (!$.tree.plugins.contextmenu.data.t) return;
                var opts = $.extend(true, {}, $.tree.plugins.contextmenu.defaults, $.tree.plugins.contextmenu.data.t.settings.plugins.contextmenu);
                if ($.tree.plugins.contextmenu.data.r && $.tree.plugins.contextmenu.data.a) {
                    $.tree.plugins.contextmenu.data.a.children("a, span").removeClass(opts.class_name);
                }
                $.tree.plugins.contextmenu.data = { a: false, r: false, t: false };
                $.tree.plugins.contextmenu.object.fadeOut("fast");
            },
            exec: function (cmd) {
                if ($.tree.plugins.contextmenu.data.t == false) return;
                var opts = $.extend(true, {}, $.tree.plugins.contextmenu.defaults, $.tree.plugins.contextmenu.data.t.settings.plugins.contextmenu);
                try { opts.items[cmd].action.apply(null, [$.tree.plugins.contextmenu.data.a, $.tree.plugins.contextmenu.data.t]); } catch (e) { };
            },

            callbacks: {
                oninit: function () {
                    if (!$.tree.plugins.contextmenu.css) {
                        var css = '#jstree-contextmenu { display:none; position:absolute; z-index:2000; list-style-type:none; margin:0; padding:0; left:-2000px; top:-2000px; } .tree-context { margin:20px; padding:0; width:180px; border:1px solid #979797; padding:2px; background:#f5f5f5; list-style-type:none; }.tree-context li { height:22px; margin:0 0 0 27px; padding:0; background:#ffffff; border-left:1px solid #e0e0e0; }.tree-context li a { position:relative; display:block; height:22px; line-height:22px; margin:0 0 0 -28px; text-decoration:none; color:black; padding:0; }.tree-context li a ins { text-decoration:none; float:left; width:16px; height:16px; margin:0 0 0 0; background-color:#f0f0f0; border:1px solid #f0f0f0; border-width:3px 5px 3px 6px; line-height:16px; }.tree-context li a span { display:block; background:#f0f0f0; margin:0 0 0 29px; padding-left:5px; }.tree-context li.separator { background:#f0f0f0; height:2px; line-height:2px; font-size:1px; border:0; margin:0; padding:0; }.tree-context li.separator span { display:block; margin:0px 0 0px 27px; height:1px; border-top:1px solid #e0e0e0; border-left:1px solid #e0e0e0; line-height:1px; font-size:1px; background:white; }.tree-context li a:hover { border:1px solid #d8f0fa; height:20px; line-height:20px; }.tree-context li a:hover span { background:#e7f4f9; margin-left:28px; }.tree-context li a:hover ins { background-color:#e7f4f9; border-color:#e7f4f9; border-width:2px 5px 2px 5px; }.tree-context li a.disabled { color:gray; }.tree-context li a.disabled ins { }.tree-context li a.disabled:hover { border:0; height:22px; line-height:22px; }.tree-context li a.disabled:hover span { background:#f0f0f0; margin-left:29px; }.tree-context li a.disabled:hover ins { border-color:#f0f0f0; background-color:#f0f0f0; border-width:3px 5px 3px 6px; }';
                        $.tree.plugins.contextmenu.css = this.add_sheet({ str: css });
                    }
                },
                onrgtclk: function (n, t, e) {
                    var opts = $.extend(true, {}, $.tree.plugins.contextmenu.defaults, t.settings.plugins.contextmenu);
                    n = $(n);
                    if (n.size() == 0) return;
                    $.tree.plugins.contextmenu.data.t = t;
                    if (!n.children("a:eq(0)").hasClass("clicked")) {
                        $.tree.plugins.contextmenu.data.a = n;
                        $.tree.plugins.contextmenu.data.r = true;
                        n.children("a").addClass(opts.class_name);
                        e.target.blur();
                    }
                    else {
                        $.tree.plugins.contextmenu.data.r = false;
                        $.tree.plugins.contextmenu.data.a = (t.selected_arr && t.selected_arr.length > 1) ? t.selected_arr : t.selected;
                    }
                    $.tree.plugins.contextmenu.show(n, t);
                    e.preventDefault();
                    e.stopPropagation();
                    // return false; // commented out because you might want to do something in your own callback
                },
                onchange: function () { $.tree.plugins.contextmenu.hide(); },
                beforedata: function () { $.tree.plugins.contextmenu.hide(); },
                ondestroy: function () { $.tree.plugins.contextmenu.hide(); }
            }
        }
    });
    $(function () {
        $.tree.plugins.contextmenu.object.hide().appendTo("body");
        $("a", $.tree.plugins.contextmenu.object[0])
			.live("click", function (event) {
			    if (!$(this).hasClass("disabled")) {
			        $.tree.plugins.contextmenu.exec.apply(null, [$(this).attr("rel")]);
			        $.tree.plugins.contextmenu.hide();
			    }
			    event.stopPropagation();
			    event.preventDefault();
			    return false;
			})
        $(document).bind("mousedown", function (event) { if ($(event.target).parents("#jstree-contextmenu").size() == 0) $.tree.plugins.contextmenu.hide(); });
    });
})(jQuery);