RequestCallback (Google Web Toolkit Javadoc)

public interface RequestCallback

The primary interface a caller must implement to receive a response to a Request.

Required Module

Modules that use this interface should inherit com.google.gwt.http.HTTP.

<module>
  <!-- other inherited modules, such as com.google.gwt.user.User -->
  <inherits name="com.google.gwt.http.HTTP"/>
  <!-- additional module settings -->
</module>

Method Summary

Methods
Modifier and Type	Method and Description
`void`	`onError(Request request, java.lang.Throwable exception)` Called when a `Request` does not complete normally.
`void`	`onResponseReceived(Request request, Response response)` Called when a pending `Request` completes normally.

- Method Detail
  - onResponseReceived
```
void onResponseReceived(Request request,
                      Response response)
```
    Called when a pending Request completes normally. Note this method is called even when the status code of the HTTP response is not "OK", 200.
    
    Parameters:
    request - the object that generated this event
    response - an instance of the Response class
  - onError
```
void onError(Request request,
           java.lang.Throwable exception)
```
    Called when a Request does not complete normally. A RequestTimeoutException is one example of the type of error that a request may encounter.
    
    Parameters:
    request - the request object which has experienced the error condition, may be null if the request was never generated
    exception - the error that was encountered

Interface RequestCallback

Required Module

Method Summary

Method Detail

onResponseReceived

onError