public static void HandleSubmit(FormElement form, DomEvent evt, AjaxOptions ajaxOptions)
{
evt.PreventDefault();
// run validation
ArrayList validationCallbacks = (ArrayList)Type.GetField(form, "validationCallbacks");
if (validationCallbacks != null)
{
for (int i = 0; i < validationCallbacks.Length; i++)
{
ValidationCallback callback = (ValidationCallback)validationCallbacks[i];
if (!callback())
{
return; // bail out since validation failed
}
}
}
string body = MvcHelpers.SerializeForm(form);
MvcHelpers.AsyncRequest(form.Action,
form.Method ?? "post",
body,
form,
ajaxOptions);
}
public static void HandleClick(AnchorElement anchor, DomEvent evt, AjaxOptions ajaxOptions)
{
evt.PreventDefault();
MvcHelpers.AsyncRequest(anchor.Href,
"post",
"",
anchor,
ajaxOptions);
}
public static void HandleSubmit(FormElement form, DomEvent evt, AjaxOptions ajaxOptions)
{
evt.PreventDefault();
string body = MvcHelpers.SerializeForm(form);
MvcHelpers.AsyncRequest(form.Action,
form.Method ?? "post",
body,
form,
ajaxOptions);
}
internal static void AsyncRequest(string url, string verb, string body, DOMElement triggerElement, AjaxOptions ajaxOptions)
{
// Run the confirm popup, if specified
if (ajaxOptions.Confirm != null)
{
if (!Script.Confirm(ajaxOptions.Confirm))
{
return;
}
}
// Override the url if specified in AjaxOptions
if (ajaxOptions.Url != null)
{
url = ajaxOptions.Url;
}
// Override the verb if specified in AjaxOptions
if (ajaxOptions.HttpMethod != null)
{
verb = ajaxOptions.HttpMethod;
}
// Add the special hidden fields to the body
if (body.Length > 0 && !body.EndsWith('&'))
{
body += "&";
}
body += "X-Requested-With=XMLHttpRequest";
string upperCaseVerb = verb.ToUpperCase();
bool isGetOrPost = (upperCaseVerb == "GET" || upperCaseVerb == "POST");
if (!isGetOrPost)
{
body += "&";
body += "X-HTTP-Method-Override=" + upperCaseVerb;
}
// Determine where to place the body
string requestBody = "";
if (upperCaseVerb == "GET" || upperCaseVerb == "DELETE")
{
if (url.IndexOf('?') > -1)
{
// Case 1: http://foo.bar/baz?abc=123
if (!url.EndsWith('&'))
{
url += "&";
}
url += body;
}
else
{
// Case 2: http://foo.bar/baz
url += "?";
url += body;
}
}
else
{
requestBody = body;
}
// Create the request
WebRequest request = new WebRequest();
request.Url = url;
// Some browsers only support XMLHttpRequest with GET and POST. Just to be
// safe we restrict out requests to use only those two methods and use a
// header as well as a form post field to override the verb. On the server side
// the header and form post field are supported using the AcceptVerbs attribute.
if (isGetOrPost)
{
request.HttpVerb = verb;
}
else
{
request.HttpVerb = "POST";
request.Headers["X-HTTP-Method-Override"] = upperCaseVerb;
}
request.Body = requestBody;
if (verb.ToUpperCase() == "PUT")
{
request.Headers["Content-Type"] = "application/x-www-form-urlencoded;";
}
request.Headers["X-Requested-With"] = "XMLHttpRequest";
DOMElement updateElement = null;
if (ajaxOptions.UpdateTargetId != null)
{
updateElement = Document.GetElementById(ajaxOptions.UpdateTargetId);
}
DOMElement loadingElement = null;
if (ajaxOptions.LoadingElementId != null)
{
loadingElement = Document.GetElementById(ajaxOptions.LoadingElementId);
}
// Create the AjaxContext for the request
AjaxContext ajaxContext = new AjaxContext(request, updateElement, loadingElement, ajaxOptions.InsertionMode);
// Run onBegin and check for cancellation
bool continueRequest = true;
if (ajaxOptions.OnBegin != null)
{
// Have to convert to objects to force the "!== false" to be emitted.
// We want no return value to be treated as returning true, so we only want to cancel the request if the result is exactly "false"
continueRequest = (object)ajaxOptions.OnBegin(ajaxContext) != (object)false;
}
// Display the loading element, if specified
if (loadingElement != null)
{
Type.InvokeMethod(typeof(Sys.UI.DomElement), "setVisible", ajaxContext.LoadingElement, true);
}
if (continueRequest)
{
// Setup the callback
request.Completed += delegate(WebRequestExecutor executor) {
MvcHelpers.OnComplete(request, ajaxOptions, ajaxContext);
};
request.Invoke();
}
}
public static void HandleClick(FormElement form, DomEvent evt)
{
string additionalInput = MvcHelpers.SerializeSubmitButton(evt.Target, evt.OffsetX, evt.OffsetY);
Type.SetField(form, "_additionalInput", additionalInput);
}
