/// <summary>
/// Sets the given model for the LayerControl in the ASP.NET session.
/// </summary>
/// <remarks>If a custom model is used, then this method can be used to set the model in the session that will be used instead.</remarks>
/// <param name="model">The model to be set in the ASP.NET session.</param>
public static void SetModelInSession(LayerControlModel model)
{
HttpContext context = HttpContext.Current;
string key = string.Format("{0}_LayerModel", context.Session.SessionID);
context.Session[key] = model;
}
/// <summary>
/// Creates the default model for the LayerControl provided by MapXtreme and sets the object in the ASP.NET session.
/// </summary>
/// <remarks>This method tries to extract the model for the LayerControl from the ASP.NET session. If the medel is not found it will create the default one and places it there.
/// This is a safe method, and always returns the model. TThis method can be used when the model may not exist in the session.</remarks>
/// <returns>LayerControlModel from session.</returns>
public static LayerControlModel SetDefaultModelInSession()
{
HttpContext context = HttpContext.Current;
LayerControlModel model = GetModelFromSession();
if (model == null) {
model = new LayerControlModel();
SetModelInSession(model);
}
return model;
}
/// <summary>
/// Creates the default model for the LayerControl provided by MapXtreme and sets the object in the ASP.NET session.
/// </summary>
/// <remarks>This method tries to extract the model for the LayerControl from the ASP.NET session. If the medel is not found it will create the default one and places it there.
/// This is a safe method, and always returns the model. TThis method can be used when the model may not exist in the session.</remarks>
/// <returns>LayerControlModel from session.</returns>
public static LayerControlModel SetDefaultModelInSession()
{
HttpContext context = HttpContext.Current;
LayerControlModel model = GetModelFromSession();
if (model == null)
{
model = new LayerControlModel();
SetModelInSession(model);
}
return(model);
}
/// <summary>
/// Gets the model for the LayerControl from the ASP.NET session.
/// </summary>
/// <remarks>This method will return null if the model is not found.</remarks>
/// <returns>LayerControl model</returns>
public static LayerControlModel GetModelFromSession()
{
HttpContext context = HttpContext.Current;
string key = string.Format("{0}_LayerModel", context.Session.SessionID);
LayerControlModel model = null;
if (context.Session[key] != null)
{
model = context.Session[key] as LayerControlModel;
}
return(model);
}
/// <summary>
/// Processes requests for the LayerControl.
/// </summary>
/// <param name="context">HttpContext</param>
/// <remarks>This method parses the URL. Gets the model for the LayerControl from the session and then uses that to get the XML. Then the HTML is generated
/// by using XSLT transform and returnes back as response.
/// </remarks>
public void ProcessRequest(HttpContext context)
{
string _command = context.Request["Command"];
string _uniqueID = context.Request["UniqueID"];
string _mapAlias = context.Request["MapAlias"];
string _mapControlID = context.Request["MapControlID"];
// Get Xslt file name
string _xsltFile = context.Request["XsltFile"];
// Get the resource path name passed as data and properly encode it.
byte[] buffer = new byte[context.Request.InputStream.Length];
int read = context.Request.InputStream.Read(buffer, 0, (int)context.Request.InputStream.Length);
string _resourcePath = System.Text.UTF8Encoding.UTF8.GetString(buffer);
string _imgPath = _resourcePath;
// Form the full path for xslt file
string _xsltPath = context.Server.MapPath(_resourcePath) + "\\" + _xsltFile;
LayerControlModel layerModel = LayerControlModel.SetDefaultModelInSession();
switch (_command)
{
case "GetHTML":
XmlDocument treeDoc = layerModel.GetLayerXML(_mapAlias, _uniqueID, _imgPath);
// load the xslt file into reader
System.IO.TextReader tr = new System.IO.StreamReader(_xsltPath);
MemoryStream ms = new MemoryStream();
StreamWriter sw = new StreamWriter(ms);
// Now replace the tags in the xslt file with actual strings from resources
string line = "";
while ((line = tr.ReadLine()) != null)
{
Regex regexp = new Regex("(Treeview2_([0-9]+))");
MatchCollection mc = regexp.Matches(line);
for (int i = mc.Count - 1; i >= 0; i--)
{
Match m = mc[i];
Group g = m.Groups[0];
Capture c = m.Groups[0].Captures[0];
string resName = line.Substring(c.Index, c.Length);
if (resName.Equals("Treeview2_3"))
{
line = line.Replace(resName, Resources.ResourceFolder);
}
else
{
string resString = L10NUtils.Resources.GetString(resName);
line = line.Replace(resName, resString);
}
}
sw.WriteLine(line);
}
sw.Flush();
ms.Position = 0;
// Use that TextReader as the Source for the XmlTextReader
System.Xml.XmlReader xr = new System.Xml.XmlTextReader(ms);
// Create a new XslTransform class
System.Xml.Xsl.XslTransform treeView = new System.Xml.Xsl.XslTransform();
// Load the XmlReader StyleSheet into the XslTransform class
treeView.Load(xr, null, null);
StringWriter sw2 = new StringWriter();
XPathNavigator nav = treeDoc.CreateNavigator();
// Do the transform and write to response
treeView.Transform(nav, null, sw2, null);
context.Response.Write(sw2.ToString());
tr.Close();
sw.Close();
ms.Close();
sw2.Close();
/*
* XmlDocument treeDoc = layerModel.GetLayerXML(_mapAlias, _uniqueID, _imgPath);
*
* XslTransform treeView = new XslTransform();
* treeView.Load(_xsltPath);
*
* StringWriter sw = new StringWriter();
*
* XPathNavigator nav = treeDoc.CreateNavigator();
*
* // Do the transform and write to response
* treeView.Transform(nav, null, sw, null);
* context.Response.Write(sw.ToString());
*/
break;
}
}
/// <summary>
/// Sets the given model for the LayerControl in the ASP.NET session.
/// </summary>
/// <remarks>If a custom model is used, then this method can be used to set the model in the session that will be used instead.</remarks>
/// <param name="model">The model to be set in the ASP.NET session.</param>
public static void SetModelInSession(LayerControlModel model)
{
HttpContext context = HttpContext.Current;
string key = string.Format("{0}_LayerModel", context.Session.SessionID);
context.Session[key] = model;
}