internal void InitializePage(BaseControl ctrl)
{
MuxControls.Add(ctrl);
if (MuxControls.Count == 1)
{
// we only run this logic once
// basically we're adding up the callback filter for custom response rendering
if (IsAjaxCallback)
{
Page.LoadComplete += LoadComplete_Ajax_Callback;
Page.Response.Filter = new AjaxFilter(Page.Response.Filter);
}
else
{
Page.LoadComplete += Page_Load_No_Ajax;
Page.Response.Filter = new ResponseFilter(Page.Response.Filter);
}
}
}
private void LoadComplete_Ajax_Callback(object sender, EventArgs e)
{
// storing viewstate
_requestViewState = Page.Request.Params["__VIEWSTATE"];
// finding the control that startet the ajax callback
string controlId = Page.Request.Params["magix.ux.callback-control"];
Page.Response.ContentType = "text/javascript";
if (string.IsNullOrEmpty(controlId))
{
// callback was initiated by a function invocation
string function = Page.Request.Params["magix.ux.function-name"];
if (string.IsNullOrEmpty(function))
{
return;
}
Control objectToInvokeOn = Page;
MethodInfo method = FindWebMethod(function, ref objectToInvokeOn);
if (method == null || method.GetCustomAttributes(typeof(Magix.UX.Core.WebMethod), false).Length == 0)
{
throw new Exception("cannot call a method without a 'WebMethod' attribute");
}
// extracting parameter values as correct types
ParameterInfo[] parameters = method.GetParameters();
List <object> args = new List <object>();
for (int idxPar = 0;
idxPar < parameters.Length && Page.Request.Params["magix.ux.function-parameter" + idxPar] != null;
idxPar++)
{
args.Add(Convert.ChangeType(
Page.Request.Params["magix.ux.function-parameter" + idxPar],
parameters[idxPar].ParameterType));
}
object retVal = method.Invoke(objectToInvokeOn, args.ToArray());
if (retVal != null)
{
string retValString = string.Format(CultureInfo.InvariantCulture, "{0}", retVal);
retValString = retValString.Replace("\\", "\\\\").Replace("'", "\\'");
JavaScriptWriter.Write("MUX.Control._functionReturnValue='{0}';", retValString);
}
return;
}
BaseControl evtCtrl = MuxControls.Find(
delegate(BaseControl idx)
{
return(idx.ClientID == controlId);
});
if (evtCtrl == null)
{
throw new ApplicationException("oops, non-existing control initiated an ajax callback! wtf??");
}
string evtName = Page.Request.Params["magix.ux.event-name"];
// Dispatching the event to our MUX Control...
evtCtrl.RaiseEvent(evtName);
}