Transform XML using XSLT to XHTML treeview

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Introduction

Transform xml data with xslt to xhtml treeview.

sampletree.xml

<code>
<?xml version="1.0" encoding="UTF-8"?>
<treeview title="Sample tree">
  
  <custom-parameters>
    <param name="shift-width" value="15"/>
    <param name="img-directory" value="images/"/>
  </custom-parameters>
  
<folder title="Desktop" img="Desktop.gif">
  <folder title="My documents" img="MyDocuments.gif">
    <folder title="My music" img="folder.gif">
      <leaf title="siteclx" url="1" img="page.gif"/>
      <leaf title="design" url="2" img="page.gif"/>
      <leaf title="devellopment" url="3" img="page.gif"/>
    </folder>
    <folder title="My images" img="MyImages.gif">
      <leaf title="php" url="4" img="red_ball.gif"/>
      <leaf title="perl" url="5" img="red_ball.gif"/>
    </folder>
  </folder>
  <folder title="My computer" img="computer.gif">
    <folder title="Floppy (A:)" url="1" img="floppy.gif"/>
    <folder title="Hard drive (C:)" url="1" img="harddrive.gif">
      <leaf title="Perl" url="7" img="page.gif"/>
      <leaf title="Java" url="8" img="page.gif"/>
      <leaf title="PHP" url="8" img="page.gif"/>
      <leaf title="dotNet" url="8" img="page.gif"/>           
    </folder>
    <leaf title="Configuration Pannel" url="9" img="config.gif"/>
    <leaf title="Shared documents" url="10" img="folder.gif"/>
  </folder>
  <folder title="Network" img="network.gif"/>
  <folder title="Trash" img="trash.gif"/>
</folder> 
</treeview>
</CODE>

treeview.xslt

<code>
<?xml version="1.0" encoding="UTF-8"?>
<xsl:stylesheet version="1.0"  xmlns:xsl="http://www.w3.org/1999/XSL/Transform" xmlns:asp="remove">

  <xsl:output method="xml" indent="yes" encoding="utf-8" omit-xml-declaration="yes"/> 
  <xsl:variable name="shift-width" select="/treeview/custom-parameters/param[@name='shift-width']/@value"/>
  <xsl:variable name="img-directory" select="/treeview/custom-parameters/param[@name='img-directory']/@value"/>
  <xsl:template match="/treeview">

  <table border="0" cellspacing="0" cellpadding="0">
      <tr><td>
      <xsl:apply-templates select="folder">
        <xsl:with-param name="depth" select="1"/>
      </xsl:apply-templates>
    </td></tr>
   </table>
        
  </xsl:template>

  <xsl:template match="folder">
    <xsl:param name="depth"/>
      <table border="0" cellspacing="0" cellpadding="0">
        <tr>
          <xsl:if test="$depth>1">
            <td width="{$shift-width}"></td>
          </xsl:if>
          <td valign="top">
            <a onclick="toggle(this)" class="folder">
            <img src="{$img-directory}plus.gif"/>
            <img src="{$img-directory}{@img}"/><xsl:value-of select="@title"/></a>
            <div>
              <xsl:attribute name="style">display:none;</xsl:attribute>
              <xsl:apply-templates select="folder">
                <xsl:with-param name="depth" select="$depth+1"/>
              </xsl:apply-templates>
              <xsl:apply-templates select="leaf"/>
            </div>
          </td>
        </tr>
      </table>
  </xsl:template>
  
  <xsl:template match="leaf">
    <table border="0" cellspacing="0" cellpadding="0">
      <tr>
      <td width="{$shift-width}"></td> 
        <td valign="top">
          <a class="leaf"><xsl:attribute name="onclick">selectLeaf('<xsl:value-of select="@title"/>','<xsl:value-of select="@url"/>')</xsl:attribute>
            <img src="{$img-directory}{@img}"/>
            <xsl:value-of select="@title"/>
          </a>
        </td>
      </tr>
      </table>
  </xsl:template>
  
</xsl:stylesheet>
</CODE>

transform.aspx

<code>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" 
  "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<%@ import Namespace="System.Xml.XPath" %>
<%@ import Namespace="System.Xml.Xsl" %>
<%@ import Namespace="System.IO" %>
<script language="C#" runat="server" Debug="true">

/* 

(c) COPYRIGHT 2002 SiteCLX
ALL RIGHTS RESERVED

author:         P.A. Huisman
filename:       transform.aspx
discription:    C# Sample, transform xml data with xslt to xhtml treeview.

modification log:
 version        date            by      notes
 1.00           16/01/2003      PAH     first version.

*/

void Page_Load(Object sender, EventArgs e) {

   XPathDocument treeDoc = new XPathDocument(Server.MapPath("sample.xml"));
   XslTransform treeView = new XslTransform();
   treeView.Load(Server.MapPath("treeview.xslt"));
   
   StringWriter sw = new StringWriter();
   treeView.Transform(treeDoc, null, sw);
   string result = sw.ToString();
   result = result.Replace("xmlns:asp=\"remove\"", "");
  
   Control ctrl = Page.ParseControl(result);
   myTree.Controls.Add(ctrl);

}
</script> 

<html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en" lang="en">
  <head>
    <title>SiteCLX title</title>
    <meta http-equiv="Content-Type" content="text/html; charset=iso-8859-1" />
    <meta http-equiv="imagetoolbar" content="no" />
    <meta http-equiv="imagetoolbar" content="false" />
    <meta name="author" content="P.A. Huisman" />
    <meta name="owner" content="SiteCLX" /> 
    <meta name="copyright" content="copyright 2002-2003 SiteCLX. http://www.siteclx.com"  />
    <meta name="keyphrases" content="xhtml treeview sample" /> 
    <meta name="resource-type" content="document" /> 
    <meta name="rating" content="general" /> 
    <meta name="keywords" content="xhtml, treeview" />
    <meta name="description" content="xhtml treeview sample" />
    <meta name="abstract" content="xhtml treeview sample" />
    <meta name="robots" content="index,follow" />
    <meta name="revisit-after" content="30 days" />
    <style type="text/css" media="screen">
    /*<![CDATA[*/
    
    .folder,
    .folder:hover,
    .leaf:hover,
    .leaf {
      font-family : verdana;
      padding:0px;
      cursor: hand;
      font-size : 8pt;
      color: #000000;
      text-decoration:none;                             
    }
    .folder:hover,
    .leaf:hover {text-decoration:undeline; cursor: hand;}
    
    /*]]>*/
    </style>
    <script type="text/javascript" language="javascript">
    /*<![CDATA[*/
    function toggle(node) {
    
      var nextDIV = node.nextSibling;
    
      while(nextDIV.nodeName != "DIV") {
        nextDIV = nextDIV.nextSibling;
      }
    
      if (nextDIV.style.display == 'none') {
    
        if (node.childNodes.length > 0) {
    
          if (node.childNodes.item(0).nodeName == "IMG") {
            node.childNodes.item(0).src = getImgDirectory(node.childNodes.item(0).src) + "minus.gif";
          }
        }
        nextDIV.style.display = 'block';
      }
      else {
    
        if (node.childNodes.length > 0) {
          if (node.childNodes.item(0).nodeName == "IMG") {
              node.childNodes.item(0).src = getImgDirectory(node.childNodes.item(0).src) + "plus.gif";
          }
        }
        nextDIV.style.display = 'none';
      }
    }
    
    function getImgDirectory(source) {
        return source.substring(0, source.lastIndexOf('/') + 1);
    }
    
    function selectLeaf(title, url) {
      alert("You just clicked on title = " + title + ":: url = " + url);
    }
    /*]]>*/
    </script>
  </head>
  <body>
    <asp:label id ="myTree" runat="server" />
  </body>
</html>
</CODE>

License

This article has no explicit license attached to it but may contain usage terms in the article text or the download files themselves. If in doubt please contact the author via the discussion board below.

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About the Author

Peter Huisman

Netherlands

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Transform XML using XSLT to XHTML treeview.

Type	Article
Licence
First Posted	15 Jan 2003
Views	108,830
Bookmarked	40 times

.NET1.0C#ASP.NET
WindowsVisual-Studio, +

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Transform XML using XSLT to XHTML treeview

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