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02.02.2005 at 08:34AM PST, ID: 21298743
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9.6

Expand all \ Contract All buttons on a navigation tree

Asked by AshleyBryant in JavaScript

Tags: , , ,

This one should be pretty easy for you oh so smart javascript gurus ;)  I've got a script in ASP that generates the code I have posted below from an XML file.  Everything works great except for the fact that I have no way to expand / contract all of the tree.  If someone can give me a working solution they get a lot of points.  Simple.

If you want to see original source and download the images that this script uses then go here:  http://www.aspfaqs.com/webtech/code/xmltreemenu2.zip

And here is a link to the coder's demo site:  http://www.aspfaqs.com/demos/xmltreedemo2/

<html>
<head>
     <title>PESAP v2.0 : Level Map</title>
     <link rel=stylesheet href="themes/Standard/default.css" type="text/css">
     <STYLE TYPE="text/css">
     <!--
          .node { color: black;
               font-family : "Helvetica", "Arial", "MS Sans Serif", sans-serif;
               font-size : 9pt;}
          .node A:link { color: black; text-decoration: none; }
          .node A:visited { color: black; text-decoration: none; }
          .node A:active { color: black; text-decoration: none; }
          .node A:hover { color: black; background : #CCCCCC; text-decoration: none; }
     -->
     </STYLE>
</head>
<script language=javascript>
function remote2(url){
   window.opener.location=url
   window.close()
}
</script>
<body>
<table border="0" cellspacing="0" cellpadding="0" width="100%">
                    <tr>
                         <td>
               
                    <table border="0" cellspacing="0" cellpadding="0" width="100%">
                         <tr valign="bottom">
                             
                              <td width="31"><img class="LEVEL1" src="../images/minusonly.gif" id="1" width="31" height="16" border="0"></td>
                              <td nowrap class="node">&nbsp;Root (ID: 248)</td>
                         </tr>

                    </table>
                   
                         <table border="0" cellspacing="0" cellpadding="0" width="100%">
                              <tr valign="bottom" class="LEVEL2" id="2" style="display:">
                                   <td>
                         
                    <table border="0" cellspacing="0" cellpadding="0" width="100%">
                         <tr valign="bottom">
                              <td width='20'><img src="../images/pixel.gif" width='20' height="1" border="0"></td>
                              <td width="31"><img class="LEVEL3" src="../images/folderclosed.gif" id="3" width="31" height="16" border="0"></td>
                              <td nowrap class="node">&nbsp;SHELF (ID: 256)</td>
                         </tr>

                    </table>
                   
                         <table border="0" cellspacing="0" cellpadding="0" width="100%">
                              <tr valign="bottom" class="LEVEL4" id="4" style="display:none">
                                   <td>
                         
                    <table border="0" cellspacing="0" cellpadding="0" width="100%">
                         <tr valign="bottom">
                              <td width='20'><img src="../images/pixel.gif" width='20' height="1" border="0"></td><td width="18"><img src="../images/line.gif" width="18" height="16"></td>
                              <td width="31"><img class="LEVEL5" src="../images/folderclosed.gif" id="5" width="31" height="16" border="0"></td>
                              <td nowrap class="node">&nbsp;TOOLS (ID: 258)</td>
                         </tr>

                    </table>
                   
                         <table border="0" cellspacing="0" cellpadding="0" width="100%">
                              <tr valign="bottom" class="LEVEL6" id="6" style="display:none">
                                   <td>
                         
                    <table border="0" cellspacing="0" cellpadding="0" width="100%">
                         <tr valign="bottom">
                              <td width='20'><img src="../images/pixel.gif" width='20' height="1" border="0"></td><td width="18"><img src="../images/line.gif" width="18" height="16"></td><td width="18"><img src="../images/line.gif" width="18" height="16"></td>
                              <td width="31"><img src="../images/docjoin.gif" width="31" height="16" border="0"></td>
                              <td nowrap class="node">&nbsp;SAW (ID: 261)</td>
                         </tr>
                    </table>

                    <table border="0" cellspacing="0" cellpadding="0" width="100%">
                         <tr valign="bottom">
                              <td width='20'><img src="../images/pixel.gif" width='20' height="1" border="0"></td><td width="18"><img src="../images/line.gif" width="18" height="16"></td><td width="18"><img src="../images/line.gif" width="18" height="16"></td>
                              <td width="31"><img src="../images/docjoin.gif" width="31" height="16" border="0"></td>
                              <td nowrap class="node">&nbsp;HAMMER (ID: 262)</td>
                         </tr>
                    </table>

                    <table border="0" cellspacing="0" cellpadding="0" width="100%">
                         <tr valign="bottom">
                              <td width='20'><img src="../images/pixel.gif" width='20' height="1" border="0"></td><td width="18"><img src="../images/line.gif" width="18" height="16"></td><td width="18"><img src="../images/line.gif" width="18" height="16"></td>
                              <td width="31"><img src="../images/doc.gif" width="31" height="16" border="0"></td>
                              <td nowrap class="node">&nbsp;TAPE MEASURE (ID: 265)</td>
                         </tr>
                    </table>
     
                                   </td>
                              </tr>
                         </table>
                         
                    <table border="0" cellspacing="0" cellpadding="0" width="100%">
                         <tr valign="bottom">
                              <td width='20'><img src="../images/pixel.gif" width='20' height="1" border="0"></td><td width="18"><img src="../images/line.gif" width="18" height="16"></td>
                              <td width="31"><img class="LEVEL7" src="../images/folderclosed.gif" id="7" width="31" height="16" border="0"></td>
                              <td nowrap class="node">&nbsp;MATERIALS (ID: 259)</td>
                         </tr>

                    </table>
                   
                         <table border="0" cellspacing="0" cellpadding="0" width="100%">
                              <tr valign="bottom" class="LEVEL8" id="8" style="display:none">
                                   <td>
                         
                    <table border="0" cellspacing="0" cellpadding="0" width="100%">
                         <tr valign="bottom">
                              <td width='20'><img src="../images/pixel.gif" width='20' height="1" border="0"></td><td width="18"><img src="../images/line.gif" width="18" height="16"></td><td width='20'><img src="../images/pixel.gif" width='20' height="1" border="0"></td>
                              <td width="31"><img src="../images/docjoin.gif" width="31" height="16" border="0"></td>
                              <td nowrap class="node">&nbsp;NAILS (ID: 263)</td>
                         </tr>
                    </table>

                    <table border="0" cellspacing="0" cellpadding="0" width="100%">
                         <tr valign="bottom">
                              <td width='20'><img src="../images/pixel.gif" width='20' height="1" border="0"></td><td width="18"><img src="../images/line.gif" width="18" height="16"></td><td width='20'><img src="../images/pixel.gif" width='20' height="1" border="0"></td>
                              <td width="31"><img src="../images/doc.gif" width="31" height="16" border="0"></td>
                              <td nowrap class="node">&nbsp;LUMBER (ID: 264)</td>
                         </tr>
                    </table>
     
                                   </td>
                              </tr>
                         </table>
                             
                                   </td>
                              </tr>
                         </table>
                         
                    <table border="0" cellspacing="0" cellpadding="0" width="100%">
                         <tr valign="bottom">
                              <td width='20'><img src="../images/pixel.gif" width='20' height="1" border="0"></td>
                              <td width="31"><img class="LEVEL9" src="../images/folderclosed.gif" id="9" width="31" height="16" border="0"></td>
                              <td nowrap class="node">&nbsp;DESK (ID: 267)</td>
                         </tr>

                    </table>
                   
                         <table border="0" cellspacing="0" cellpadding="0" width="100%">
                              <tr valign="bottom" class="LEVEL10" id="10" style="display:none">
                                   <td>
                         
                    <table border="0" cellspacing="0" cellpadding="0" width="100%">
                         <tr valign="bottom">
                              <td width='20'><img src="../images/pixel.gif" width='20' height="1" border="0"></td><td width='20'><img src="../images/pixel.gif" width='20' height="1" border="0"></td>
                              <td width="31"><img class="LEVEL11" src="../images/folderclosed.gif" id="11" width="31" height="16" border="0"></td>
                              <td nowrap class="node">&nbsp;BUILDING MATERIALS (ID: 268)</td>
                         </tr>

                    </table>
                   
                         <table border="0" cellspacing="0" cellpadding="0" width="100%">
                              <tr valign="bottom" class="LEVEL12" id="12" style="display:none">
                                   <td>
                         
                    <table border="0" cellspacing="0" cellpadding="0" width="100%">
                         <tr valign="bottom">
                              <td width='20'><img src="../images/pixel.gif" width='20' height="1" border="0"></td><td width='20'><img src="../images/pixel.gif" width='20' height="1" border="0"></td><td width="18"><img src="../images/line.gif" width="18" height="16"></td>
                              <td width="31"><img src="../images/docjoin.gif" width="31" height="16" border="0"></td>
                              <td nowrap class="node">&nbsp;LUMBER (ID: 271)</td>
                         </tr>
                    </table>

                    <table border="0" cellspacing="0" cellpadding="0" width="100%">
                         <tr valign="bottom">
                              <td width='20'><img src="../images/pixel.gif" width='20' height="1" border="0"></td><td width='20'><img src="../images/pixel.gif" width='20' height="1" border="0"></td><td width="18"><img src="../images/line.gif" width="18" height="16"></td>
                              <td width="31"><img src="../images/doc.gif" width="31" height="16" border="0"></td>
                              <td nowrap class="node">&nbsp;HARDWARE (ID: 273)</td>
                         </tr>
                    </table>
     
                                   </td>
                              </tr>
                         </table>
                         
                    <table border="0" cellspacing="0" cellpadding="0" width="100%">
                         <tr valign="bottom">
                              <td width='20'><img src="../images/pixel.gif" width='20' height="1" border="0"></td><td width='20'><img src="../images/pixel.gif" width='20' height="1" border="0"></td>
                              <td width="31"><img class="LEVEL13" src="../images/folderclosed.gif" id="13" width="31" height="16" border="0"></td>
                              <td nowrap class="node">&nbsp;EQUIPMENT (ID: 269)</td>
                         </tr>

                    </table>
                   
                         <table border="0" cellspacing="0" cellpadding="0" width="100%">
                              <tr valign="bottom" class="LEVEL14" id="14" style="display:none">
                                   <td>
                         
                    <table border="0" cellspacing="0" cellpadding="0" width="100%">
                         <tr valign="bottom">
                              <td width='20'><img src="../images/pixel.gif" width='20' height="1" border="0"></td><td width='20'><img src="../images/pixel.gif" width='20' height="1" border="0"></td><td width='20'><img src="../images/pixel.gif" width='20' height="1" border="0"></td>
                              <td width="31"><img src="../images/docjoin.gif" width="31" height="16" border="0"></td>
                              <td nowrap class="node">&nbsp;COMPUTER (ID: 270)</td>
                         </tr>
                    </table>

                    <table border="0" cellspacing="0" cellpadding="0" width="100%">
                         <tr valign="bottom">
                              <td width='20'><img src="../images/pixel.gif" width='20' height="1" border="0"></td><td width='20'><img src="../images/pixel.gif" width='20' height="1" border="0"></td><td width='20'><img src="../images/pixel.gif" width='20' height="1" border="0"></td>
                              <td width="31"><img src="../images/docjoin.gif" width="31" height="16" border="0"></td>
                              <td nowrap class="node">&nbsp;MONITOR (ID: 272)</td>
                         </tr>
                    </table>

                    <table border="0" cellspacing="0" cellpadding="0" width="100%">
                         <tr valign="bottom">
                              <td width='20'><img src="../images/pixel.gif" width='20' height="1" border="0"></td><td width='20'><img src="../images/pixel.gif" width='20' height="1" border="0"></td><td width='20'><img src="../images/pixel.gif" width='20' height="1" border="0"></td>
                              <td width="31"><img src="../images/docjoin.gif" width="31" height="16" border="0"></td>
                              <td nowrap class="node">&nbsp;TELEPHONE (ID: 274)</td>
                         </tr>
                    </table>

                    <table border="0" cellspacing="0" cellpadding="0" width="100%">
                         <tr valign="bottom">
                              <td width='20'><img src="../images/pixel.gif" width='20' height="1" border="0"></td><td width='20'><img src="../images/pixel.gif" width='20' height="1" border="0"></td><td width='20'><img src="../images/pixel.gif" width='20' height="1" border="0"></td>
                              <td width="31"><img src="../images/doc.gif" width="31" height="16" border="0"></td>
                              <td nowrap class="node">&nbsp;CHAIR (ID: 275)</td>
                         </tr>
                    </table>
     
                                   </td>
                              </tr>
                         </table>
                             
                                   </td>
                              </tr>
                         </table>
                             
                                   </td>
                              </tr>
                         </table>
                         
                         </td>
                    </tr>
               </table>
<SCRIPT LANGUAGE="Javascript">
     <!--
          //These two arrays work with each other to identify the menu element that should
          //be hidden or made visible.  There is a one-to-one relationship between
          //the rows of each array.  For example arClickedElementID(0) contains the
          //ID to access the element ID stored in arAffectedMenuItemID(0).
               
          //Note: The value of the ASP variable iTotal used below represents the
          //total number of items and subitems in the menu.  The value is set by
          //reference in the DisplayNode() subroutine call
          var arClickedElementID = new Array( "1", "2", "3", "4", "5", "6", "7", "8", "9", "10", "11", "12", "13", "14", "15");
          var arAffectedMenuItemID = new Array( "2", "3", "4", "5", "6", "7", "8", "9", "10", "11", "12", "13", "14", "15", "16");
               
          //This function queries the arClickedElementID[] and arAffectedMenuItemID[] arrays
          //to get an object reference to the appropriate menu element to show or hide.
          function fnLookupElementRef(sID)
          {
               var i;
               for (i=0;i<arClickedElementID.length;i++)
                    if (arClickedElementID[i] == sID)
                         return document.all(arAffectedMenuItemID[i]);
                             
               return null;
          }
               
          //This function is responsible for showing/hiding the menu items.  It
          //also switches the images accordingly
          function doChangeTree()
          {
               var targetID, srcElement, targetElement;
               srcElement = window.event.srcElement;
                   
               //Only work with elements that have LEVEL in the classname
               if(srcElement.className.substr(0,5) == "LEVEL")
               {
                    //Using the ID of the item that was clicked, we look up
                    //and retrieve an object reference to the menu item that
                    //should be shown or hidden
                    targetElement = fnLookupElementRef(srcElement.id)          
                         
                    if (targetElement != null)
                    {
                         //First find out if the current folder is empty
                         //We find out based on the name of the image used
                         var sImageSource = srcElement.src;
                         if (sImageSource.indexOf("empty") == -1)
                         {
                              if (targetElement.style.display == "none")
                              {
                                   //Our menu item is currently hidden, so display it
                                   targetElement.style.display = "";
                                       
                                   if (srcElement.className == "LEVEL1")
                                        //Set a special open-folder graphic for the root folder
                                        srcElement.src = "../images/minusonly.gif";
                                   else
                                        //Otherwise, just show the open folder icon
                                        srcElement.src = "../images/folderopen.gif";
                              }
                              else
                              {
                                   //Our menu item is currently visible, so hide it
                                   targetElement.style.display = "none";
                                       
                                   if (srcElement.className == "LEVEL1")
                                        //Set a special closed-folder graphic for the root folder
                                        srcElement.src = "../images/plusonly.gif";
                                   else
                                        //Otherwise, just show the closed folder icon
                                        srcElement.src = "../images/folderclosed.gif";
                              }
                         }
                    }
               }
          }    
               
          //Capture user clicks on the web page and
          //call the doChangeTree() function to
          //handle the event
          document.onclick = doChangeTree;
     -->
     </SCRIPT>

     </body>
</html>Start Free Trial
[+][-]02.02.2005 at 04:21PM PST, ID: 13209538

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About this solution

Zone: JavaScript
Tags: expand, javascript, all, contract
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Solution Provided By: dakyd
Participating Experts: 2
Solution Grade: A
 
 
[+][-]02.03.2005 at 07:01AM PST, ID: 13214904

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[+][-]02.03.2005 at 08:04AM PST, ID: 13215689

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