0 Replies Latest reply: Mar 11, 2007 10:04 PM by 555144 RSS

    javascript treemenu

    555144
      hi all...

      down here is the javascript for treemenu, anyone familiar about this?
      i got problem while applied it on my website. just a bit error. the icon for main item not static, sometime missing and wrong icon. tq.

      ***********************************************************************************************
      var persisteduls=new Object()
      var ddtreemenu=new Object()

      ddtreemenu.closefolder="closed.gif" //set image path to "closed" folder image
      ddtreemenu.openfolder="open.gif" //set image path to "open" folder image

      //////////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)
      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")
      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.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.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.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)
      }