/*
* Treeview 1.4 - jQuery plugin to hide and show branches of a tree
* 
* http://bassistance.de/jquery-plugins/jquery-plugin-treeview/
* http://docs.jquery.com/Plugins/Treeview
*
* Copyright (c) 2007 Jörn Zaefferer
*
* Dual licensed under the MIT and GPL licenses:
*   http://www.opensource.org/licenses/mit-license.php
*   http://www.gnu.org/licenses/gpl.html
*
* Revision: $Id: jquery.treeview.js 4684 2008-02-07 19:08:06Z joern.zaefferer $
*
*/
; (function($) {
    $.extend($.fn, {
        swapClass: function(c1, c2) {
            var c1Elements = this.filter('.' + c1);
            this.filter('.' + c2).removeClass(c2).addClass(c1);
            c1Elements.removeClass(c1).addClass(c2);
            return this;
        },
        replaceClass: function(c1, c2) {
            return this.filter('.' + c1).removeClass(c1).addClass(c2).end();
        },
        hoverClass: function(className) {
            className = className || "hover"; return this.hover(function() {
                $(this).addClass(className);
            },
        function() {
            $(this).removeClass(className);
        });
        },
        heightToggle: function(animated, callback) {
            animated ? this.animate({ height: "toggle" }, animated, callback) : this.each(function() {
                jQuery(this)[jQuery(this).is(":hidden") ? "show" : "hide"]();
                if (callback) callback.apply(this, arguments);
            });
        },
        heightHide: function(animated, callback) {
            if (animated) {
                this.animate({ height: "hide" }, animated, callback);
            } else {
                this.hide(); if (callback) this.each(callback);
            }
        },
        prepareBranches: function(settings) {
            if (!settings.prerendered) {
                this.filter(":last-child:not(ul)").addClass(CLASSES.last);
                this.filter((settings.collapsed ? "" : "." + CLASSES.closed) + ":not(." + CLASSES.open + ")").find(">ul").hide();
            } return this.filter(":has(>ul)");
        },
        applyClasses: function(settings, toggler) {
            this.filter(":has(>ul):not(:has(>a))").find(">span").click(function(event)
            { toggler.apply($(this).next()); }).add($("a", this)).hoverClass();
            if (!settings.prerendered) { this.filter(":has(>ul:hidden)").addClass(CLASSES.expandable).replaceClass(CLASSES.last, CLASSES.lastExpandable); this.not(":has(>ul:hidden)").addClass(CLASSES.collapsable).replaceClass(CLASSES.last, CLASSES.lastCollapsable); this.prepend("<div class=\"" + CLASSES.hitarea + "\"/>").find("div." + CLASSES.hitarea).each(function() { var classes = ""; $.each($(this).parent().attr("class").split(" "), function() { classes += this + "-hitarea "; }); $(this).addClass(classes); }); } this.find("div." + CLASSES.hitarea).click(toggler);
        },
        treeview: function(settings) {
            settings = $.extend({ cookieId: "treeview" }, settings);
            if (settings.add) { return this.trigger("add", [settings.add]); }
            if (settings.toggle) {
                var callback = settings.toggle; settings.toggle = function() {
                    return callback.apply($(this).parent()[0], arguments);
                };
            }
            function treeController(tree, control) {
                function handler(filter) {
                    return function() {
                        toggler.apply($("div." + CLASSES.hitarea, tree).filter(function()
                        { return filter ? $(this).parent("." + filter).length : true; })); return false;
                    };
                }
                $("a:eq(0)", control).click(handler(CLASSES.collapsable));
                $("a:eq(1)", control).click(handler(CLASSES.expandable));
                $("a:eq(2)", control).click(handler());
            }
            function toggler() {
                $(this).parent().find(">.hitarea").swapClass(CLASSES.collapsableHitarea, CLASSES.expandableHitarea).swapClass(CLASSES.lastCollapsableHitarea, CLASSES.lastExpandableHitarea).end().swapClass(CLASSES.collapsable, CLASSES.expandable).swapClass(CLASSES.lastCollapsable, CLASSES.lastExpandable).find(">ul").heightToggle(settings.animated, settings.toggle);
                if (settings.unique) {
                    $(this).parent().siblings().find(">.hitarea").replaceClass(CLASSES.collapsableHitarea, CLASSES.expandableHitarea).replaceClass(CLASSES.lastCollapsableHitarea, CLASSES.lastExpandableHitarea).end().replaceClass(CLASSES.collapsable, CLASSES.expandable).replaceClass(CLASSES.lastCollapsable, CLASSES.lastExpandable).find(">ul").heightHide(settings.animated, settings.toggle);
                }
            }
            function serialize() {
                function binary(arg) {
                    return arg ? 1 : 0;
                }
                var data = []; branches.each(function(i, e) {
                    data[i] = $(e).is(":has(>ul:visible)") ? 1 : 0;
                });
                $.cookie(settings.cookieId, data.join(""));
            }
            function deserialize() {
                var stored = $.cookie(settings.cookieId);
                if (stored) {
                    var data = stored.split("");
                    branches.each(function(i, e) {
                        $(e).find(">ul")[parseInt(data[i]) ? "show" : "hide"]();
                    });
                }
            }
            this.addClass("treeview");
            var branches = this.find("li").prepareBranches(settings);
            switch (settings.persist) {
                case "cookie": var toggleCallback = settings.toggle; settings.toggle = function() {
                    serialize();
                    if (toggleCallback) {
                        toggleCallback.apply(this, arguments);
                    }
                };
                    deserialize(); break; case "location":
                    var current = this.find("a").filter(function() {
                        return this.href.toLowerCase() == location.href.toLowerCase();
                    });
                    if (current.length) {
                        current.addClass("selected").parents("ul, li").add(current.next()).show();
                    } break;
            }
            branches.applyClasses(settings, toggler);
            if (settings.control) { treeController(this, settings.control); $(settings.control).show(); }
            return this.bind("add", function(event, branches) {
                $(branches).prev().removeClass(CLASSES.last).removeClass(CLASSES.lastCollapsable).removeClass(CLASSES.lastExpandable).find(">.hitarea").removeClass(CLASSES.lastCollapsableHitarea).removeClass(CLASSES.lastExpandableHitarea);
                $(branches).find("li").andSelf().prepareBranches(settings).applyClasses(settings, toggler);
            });
        }
    });
    var CLASSES = $.fn.treeview.classes = {
        open: "open",
        closed: "closed",
        expandable: "expandable",
        expandableHitarea: "expandable-hitarea",
        lastExpandableHitarea: "lastExpandable-hitarea",
        collapsable: "collapsable",
        collapsableHitarea: "collapsable-hitarea",
        lastCollapsableHitarea: "lastCollapsable-hitarea",
        lastCollapsable: "lastCollapsable",
        lastExpandable: "lastExpandable",
        last: "last",
        hitarea: "hitarea"
    };
    $.fn.Treeview = $.fn.treeview;
})(jQuery);