Code:
<!--
/*
* DO NOT REMOVE THIS NOTICE
*
* PROJECT: mygosuMenu
* VERSION: 1.2.0b
* COPYRIGHT: (c) 2003,2004 Cezary Tomczak
* LINK: http://gosu.pl/dhtml/mygosumenu.html
* LICENSE: BSD (revised)
*
* MODIFIED: 2007,2008 Cameron Clark
* CHANGES: 1) Close all other nodes when a new node is clicked
* 2) Remembers current open node with a cookie
* 3) Immediately assigns class of "on" to clicked menu item, removing from all other items
* 4) Uses blur() to remove dotted outline from clicked links
* 5) Allows option to make parent links either just show submenus, or also open corresponding pages
*/
function TreeMenu(id, openParentPages) {
this.init = function() {
if (!document.getElementById(this.id)) {
return;
}
document.getElementById(this.id).className = "tree-menu"; // change class name to invoke tree menu styles
this.parse(document.getElementById(this.id).childNodes, this.tree, this.id, 0);
this.load();
addDOMEvent(window,'unload',function(e) { self.save(); },false);
}
this.parse = function(nodes, tree, id, depth) {
var a, lastLi;
for (var i = 0; i < nodes.length; i++) {
if (nodes[i].nodeType != 1) {
continue;
}
if (nodes[i].tagName.toLowerCase() == "li") {
lastLi = nodes[i];
nodes[i].id = id + "-" + tree.length;
tree[tree.length] = new Array();
if (a = this.getA(nodes[i].childNodes)) {
a.id = nodes[i].id + "-a";
if (hasClassName(a,"on")) {
this.id_activenode = nodes[i].id;
}
}
if (nodes[i].childNodes && this.hasUl(nodes[i].childNodes)) {
nodes[i].className = (depth == 0) ? "top-section" : "section";
if (a) {
if (depth == 0) {
if (this.openParentPages) // enable links on parent items (links to parent category pages work)
eval("document.getElementById('"+a.id+"').onclick = function() {this.blur(); self.setActive(this); return self.click('"+nodes[i].id+"');}");
else // disable links on parent items (so clicking them just opens submenus, not the page)
eval("document.getElementById('"+a.id+"').onclick = function() {this.blur(); self.click('"+nodes[i].id+"'); return false;}");
}
else
eval("document.getElementById('"+a.id+"').onclick = function() {this.blur(); self.setActive(this); return self.click('"+nodes[i].id+"');}");
}
}
else {
nodes[i].className = (depth == 0) ? "top-item" : "item";
if (a) {
if (depth == 0) {
a.id = nodes[i].id + "-a";
eval("document.getElementById('"+a.id+"').onclick = function() {this.blur(); self.closeAll('"+nodes[i].id+"'); self.setActive(this); return true;}");
}
else {
eval("document.getElementById('"+a.id+"').onclick = function() {this.blur(); self.setActive(this); return true;}");
}
}
}
}
if (nodes[i].tagName.toLowerCase() == "ul") {
nodes[i].style.display = "none";
id = id + "-" + (tree.length - 1);
nodes[i].id = id + "-section";
tree = tree[tree.length - 1];
}
if (nodes[i].childNodes) {
this.parse(nodes[i].childNodes, tree, id, depth+1); // run recursively through menu tree
}
}
if (lastLi) {
lastLi.className = lastLi.className + "-end";
}
}
this.hasUl = function(nodes) {
for (var i = 0; i < nodes.length; i++) {
if (nodes[i].nodeType != 1) {
continue;
}
if (nodes[i].tagName.toLowerCase() == "ul") {
return true;
}
if (nodes[i].childNodes) {
if (this.hasUl(nodes[i].childNodes)) {
return true;
}
}
}
return false;
}
this.getA = function(nodes) {
for (var i = 0; i < nodes.length; i++) {
if (nodes[i].nodeType == 1) {
if (nodes[i].tagName.toLowerCase() == "a") {
return nodes[i];
}
return false;
}
}
}
this.setActive = function(a) {
var links = document.getElementById(this.id).getElementsByTagName("A");
for (var i = 0; i < links.length; i++) {
links[i].className = '';
}
a.className = "on";
}
this.click = function(id) {
childList = document.getElementById(id + "-section");
if (childList) {
if (childList.style.display == "none") {
this.show(id);
this.hideOthers(document.getElementById(this.id).childNodes,id); // pass top-level menu object to start recursion
this.id_opennode = id; // set current node for saving in cookie
return true;
}
else {
this.hide(id);
this.id_opennode = (id.split("-").length > 2) ? id.substr(0,id.lastIndexOf("-")) : ""; // set parent node, or if at top level, set to no id, for saving in cookie
return false;
}
}
}
this.show = function(id) {
childList = document.getElementById(id + "-section");
parentItem = document.getElementById(id);
if (childList) {
childList.style.display = "";
parentItem.className = parentItem.className.replace(/section(-open)?/, "section-open");
}
}
this.hide = function(id) {
childList = document.getElementById(id + "-section");
parentItem = document.getElementById(id);
if (childList) {
childList.style.display = "none";
parentItem.className = parentItem.className.replace(/section(-open)?/, "section");
}
}
// runs through child nodes recursively to hide all but current node and its parents
this.hideOthers = function(nodes,id) {
for (var i = 0; i < nodes.length; i++) {
if (nodes[i].nodeType == 1 && nodes[i].tagName.toLowerCase() == "li") { // find all child <li> elements
childList = document.getElementById(nodes[i].id + "-section");
if (childList) {
if (id.indexOf(nodes[i].id) == -1) { // if this is not the current node or one of its parents, hide it
this.hide(nodes[i].id);
}
if (id != nodes[i].id && childList.childNodes) { // if this is not the current node and it has child nodes, run this function recursively to hide them
this.hideOthers(childList.childNodes,id);
}
}
}
}
}
this.closeAll = function(id) {
this.hideOthers(document.getElementById(this.id).childNodes,'');
this.id_opennode = '';
}
this.showParents = function(id) { // Note that this will work backwards from closest to farthest ancestor nodes
var idPieces = id.split("-");
var depth = idPieces.length-2;
for (var p = 0; p < depth; p++) {
idPieces.pop();
this.show(idPieces.join("-"))
}
}
this.save = function() {
if (this.id_opennode) {
this.cookie.set(this.id, this.id_opennode);
}
else {
this.cookie.del(this.id);
}
}
this.load = function() {
var id_savednode = this.cookie.get(this.id);
if (this.id_activenode) {
this.id_opennode = this.id_activenode;
}
else if (id_savednode) {
this.id_opennode = id_savednode;
}
if (this.id_opennode) {
this.showParents(this.id_opennode);
this.show(this.id_opennode);
}
}
function Cookie() {
this.get = function(name) {
var cookies = document.cookie.split(";");
for (var i = 0; i < cookies.length; i++) {
var a = cookies[i].split("=");
if (a.length == 2) {
a[0] = a[0].trim();
a[1] = a[1].trim();
if (a[0] == name) {
return unescape(a[1]);
}
}
}
return "";
}
this.set = function(name, value) {
var date = new Date();
date.setTime(date.getTime()+(24*60*60*1000)); // save for 1 day
document.cookie = name + "=" + escape(value) + "; expires=" + date.toGMTString() + "; path=/";
}
this.del = function(name) {
document.cookie = name + "=; expires=Thu, 01-Jan-70 00:00:01 GMT; path=/";
}
}
var self = this;
this.id = id;
this.openParentPages = openParentPages;
this.tree = new Array();
this.cookie = new Cookie();
this.init();
}
// Define trim function
if (typeof String.prototype.trim == "undefined") {
String.prototype.trim = function() {
var s = this.replace(/^\s*/, "");
return s.replace(/\s*$/, "");
}
}
// Load menu immediately
new TreeMenu('siteMenu',1);
// Iterates through all class names for an object and returns true if specified class name is found
function hasClassName(obj, className) {
if (obj && obj.className) {
var objClass = obj.className.trim();
arrClasses = objClass.split(" ");
for (var c=0; c<arrClasses.length; c++) {
if (className == arrClasses[c])
return true;
}
}
return false;
}
// For adding new events to any object (like preloads in tpl_categories_css.php)
function addDOMEvent(elm, evType, fn, useCapture) {
if (elm.addEventListener) {
elm.addEventListener(evType, fn, useCapture);
return true;
}
else if (elm.attachEvent) {
var r = elm.attachEvent('on' + evType, fn);
return r;
}
else {
elm['on' + evType] = fn;
}
}
// Accept any number of image sources for preloadings (separate with commas)
function preloadImages() {
if (document.images) {
if (!document.preloads)
document.preloads = new Array();
var i, j, p = document.preloads.length, a = preloadImages.arguments;
// Check to see if the preload already exists in the array, and if so, exit function
for (i=0; i<p; i++) {
for (j=0; j<a.length; j++) {
if (document.preloads[i].src == a[j])
return;
}
}
// Add preload to array
for (j=0; j<a.length; j++) {
document.preloads[p] = new Image;
document.preloads[p++].src = a[j];
}
}
}
// -->
Is there a simple solution? If my visitor clicks away from the category/product area, I just want the menu to close up!
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