// the render entrance
public void Render(ViewModel viewModel)
{
lock (_syncObj)
{
ViewAttribute view = viewModel.GetType().GetAttribute<ViewAttribute>();
if (view != null)
{
RenderTemplate(view, viewModel);
}
}
}
// Render from template file
private void RenderTemplate(ViewAttribute viewAttr, ViewModel viewModel)
{
if (_viewParser == null)
{
throw new Exception("there are not any ViewParser");
}
Type viewModelType = viewModel.GetType();
// if debug, will be read file from local path "_debug folder"
if (viewModel.DeBug)
{
string content = ReadFeatureFromTemporaryFile(viewModelType.FullName);
if (!string.IsNullOrEmpty(content))
{
Context.Response.Write(this._viewParser.Parse(content, viewModel));
return;
}
}
// find from cache
if (_viewCache.ContainsKey(viewAttr.ViewName))
{
Context.Response.Write(this._viewParser.Parse(_viewCache[viewAttr.ViewName].ToString(), viewModel));
return;
}
Stream strm = null;
try
{
// from internet
if (Regex.IsMatch(viewAttr.ViewName, @"^http(s)?\:\/\/", RegexOptions.IgnoreCase))
{
var httpRequest = (HttpWebRequest)WebRequest.Create(viewAttr.ViewName);
var httpResponse = (HttpWebResponse)httpRequest.GetResponse();
strm = httpResponse.GetResponseStream();
}
// from local path
else if (Regex.IsMatch(viewAttr.ViewName, @"\~/(\w+(/)?)+(\.\w+)"))
{
// convert to physics Path
var physicsPath = Context.Server.MapPath(viewAttr.ViewName);
if (File.Exists(physicsPath))
{
strm = new FileStream(physicsPath, FileMode.Open);
}
}
// from embed resources
else
{
strm = viewModel.GetType().Assembly.GetManifestResourceStream(viewAttr.ViewName);
}
if (strm == null)
{
Context.Response.StatusCode = 404;
return;
}
using (StreamReader stmR = new StreamReader(strm))
{
string content = stmR.ReadToEnd();
if (!string.IsNullOrEmpty(content) && !_viewCache.ContainsKey(viewAttr.ViewName))
{
_viewCache.Add(viewAttr.ViewName, content);
}
// if debug output the content to a file that saved in loacl path "_debug folder"
if (viewModel.DeBug)
{
WriteFeatureToTemporaryFile(content, viewModelType.FullName);
}
Context.Response.Write(this._viewParser.Parse(content, viewModel));
}
}
catch (Exception ex)
{
Engine.Logging(EngineLogger.Level.Error, ex, ex.Message);
throw ex;
}
finally
{
if (strm != null)
{
strm.Dispose();
}
}
}
