skins/treemenu/simpletreemenu.js
var persisteduls = new Object();
var ddtreemenu = new Object();
//////////No need to edit beyond here///////////////////////////
ddtreemenu.createTree = function (treeid, enablepersist, persistdays) {
var ultags = document.getElementById(treeid).getElementsByTagName("ul");
if (typeof persisteduls[treeid] == "undefined")
persisteduls[treeid] = (enablepersist == true && ddtreemenu.getCookie(treeid) != "") ? ddtreemenu.getCookie(treeid).split(",") : "";
for (var i = 0; i < ultags.length; i++)
ddtreemenu.buildSubTree(treeid, ultags[i], i)
if (enablepersist == true) { //if enable persist feature
var durationdays = (typeof persistdays == "undefined") ? 1 : parseInt(persistdays);
ddtreemenu.dotask(window, function () {
ddtreemenu.rememberstate(treeid, durationdays)
}, "unload"); //save opened UL indexes on body unload
}
};
ddtreemenu.buildSubTree = function (treeid, ulelement, index) {
ulelement.parentNode.className = "submenu";
if (typeof persisteduls[treeid] == "object") { //if cookie exists (persisteduls[treeid] is an array versus "" string)
if (ddtreemenu.searcharray(persisteduls[treeid], index)) {
ulelement.setAttribute("rel", "open");
//noinspection UnterminatedStatementJS
ulelement.style.display = "block"
ulelement.parentNode.style.backgroundImage = "url(" + ddtreemenu.openfolder + ")"
}
else
ulelement.setAttribute("rel", "closed")
} //end cookie persist code
else if (ulelement.getAttribute("rel") == null || ulelement.getAttribute("rel") == false) //if no cookie and UL has NO rel attribute explicted added by user
ulelement.setAttribute("rel", "closed");
else if (ulelement.getAttribute("rel") == "open") //else if no cookie and this UL has an explicit rel value of "open"
ddtreemenu.expandSubTree(treeid, ulelement); //expand this UL plus all parent ULs (so the most inner UL is revealed!)
ulelement.parentNode.onclick = function (e) {
var submenu = this.getElementsByTagName("ul")[0];
if (submenu.getAttribute("rel") == "closed") {
submenu.style.display = "block";
submenu.setAttribute("rel", "open");
ulelement.parentNode.style.backgroundImage = "url(" + ddtreemenu.openfolder + ")"
}
else if (submenu.getAttribute("rel") == "open") {
submenu.style.display = "none";
submenu.setAttribute("rel", "closed");
ulelement.parentNode.style.backgroundImage = "url(" + ddtreemenu.closefolder + ")"
}
ddtreemenu.preventpropagate(e)
};
ulelement.onclick = function (e) {
ddtreemenu.preventpropagate(e)
}
};
ddtreemenu.expandSubTree = function (treeid, ulelement) { //expand a UL element and any of its parent ULs
var rootnode = document.getElementById(treeid);
var currentnode = ulelement;
currentnode.style.display = "block";
currentnode.parentNode.style.backgroundImage = "url(" + ddtreemenu.openfolder + ")";
while (currentnode != rootnode) {
if (currentnode.tagName == "UL") { //if parent node is a UL, expand it too
currentnode.style.display = "block";
currentnode.setAttribute("rel", "open"); //indicate it's open
currentnode.parentNode.style.backgroundImage = "url(" + ddtreemenu.openfolder + ")"
}
currentnode = currentnode.parentNode
}
};
ddtreemenu.flatten = function (treeid, action) { //expand or contract all UL elements
var ultags = document.getElementById(treeid).getElementsByTagName("ul");
for (var i = 0; i < ultags.length; i++) {
ultags[i].style.display = (action == "expand") ? "block" : "none";
var relvalue = (action == "expand") ? "open" : "closed";
ultags[i].setAttribute("rel", relvalue);
ultags[i].parentNode.style.backgroundImage = (action == "expand") ? "url(" + ddtreemenu.openfolder + ")" : "url(" + ddtreemenu.closefolder + ")"
}
};
ddtreemenu.rememberstate = function (treeid, durationdays) { //store index of opened ULs relative to other ULs in Tree into cookie
var ultags = document.getElementById(treeid).getElementsByTagName("ul");
var openuls = new Array();
for (var i = 0; i < ultags.length; i++) {
if (ultags[i].getAttribute("rel") == "open")
openuls[openuls.length] = i; //save the index of the opened UL (relative to the entire list of ULs) as an array element
}
if (openuls.length == 0) //if there are no opened ULs to save/persist
openuls[0] = "none open"; //set array value to string to simply indicate all ULs should persist with state being closed
ddtreemenu.setCookie(treeid, openuls.join(","), durationdays); //populate cookie with value treeid=1,2,3 etc (where 1,2... are the indexes of the opened ULs)
};
////A few utility functions below//////////////////////
ddtreemenu.getCookie = function (Name) { //get cookie value
var re = new RegExp(Name + "=[^;]+", "i"); //construct RE to search for target name/value pair
if (document.cookie.match(re)) //if cookie found
return document.cookie.match(re)[0].split("=")[1]; //return its value
return ""
};
ddtreemenu.setCookie = function (name, value, days) { //set cookei value
var expireDate = new Date();
//set "expstring" to either future or past date, to set or delete cookie, respectively
var expstring = expireDate.setDate(expireDate.getDate() + parseInt(days));
document.cookie = name + "=" + value + "; expires=" + expireDate.toGMTString() + "; path=/";
};
ddtreemenu.searcharray = function (thearray, value) { //searches an array for the entered value. If found, delete value from array
var isfound = false;
for (var i = 0; i < thearray.length; i++) {
if (thearray[i] == value) {
isfound = true;
thearray.shift(); //delete this element from array for efficiency sake
break
}
}
return isfound
};
ddtreemenu.preventpropagate = function (e) { //prevent action from bubbling upwards
if (typeof e != "undefined")
e.stopPropagation();
else
event.cancelBubble = true
};
ddtreemenu.dotask = function (target, functionref, tasktype) { //assign a function to execute to an event handler (ie: onunload)
var tasktype = (window.addEventListener) ? tasktype : "on" + tasktype;
if (target.addEventListener)
target.addEventListener(tasktype, functionref, false);
else if (target.attachEvent)
target.attachEvent(tasktype, functionref)
};