/// <summary>
/// Internal call back when xml deserialization completes.
/// </summary>
/// <param name="result"></param>
protected void XmlResultOperationCompleted(IAsyncResult result)
{
AsyncResult ar = (AsyncResult)result;
FacebookCallCompleted <string> callback = (FacebookCallCompleted <string>)ar.AsyncState;
if (callback != null)
{
callback(ar.Result, ar.AsyncExternalState, ar.Exception);
}
}
/// <summary>
/// Deserializes facebook response object if there is no exception and calls the callback with result
/// </summary>
/// <typeparam name="TObject"></typeparam>
/// <typeparam name="TResult"></typeparam>
/// <param name="result"></param>
/// <param name="propName"></param>
private static void OnFacebookCallCompleted <TObject, TResult>(IAsyncResult result, string propName)
{
AsyncResult ar = (AsyncResult)result;
FacebookCallCompleted <TResult> callback = (FacebookCallCompleted <TResult>)ar.AsyncState;
if (callback == null)
{
return;
}
TResult value = default(TResult);
FacebookException exception = ar.Exception;
if (exception == null)
{
try
{
// XML Serialization
TObject response = Utilities.DeserializeXML <TObject>(ar.Result);
// JSON Serialization
//string resultString = FixupJSONString(ar.Result, types[0]);
//MethodInfo methodInfo = typeof(Utilities).GetMethod("DeserializeJSONObject").MakeGenericMethod(types[0]);
//resultObject = methodInfo.Invoke(null, new object[] { resultString });
if (!string.IsNullOrEmpty(propName))
{
value = (TResult)response.GetType().GetProperty(propName).GetValue(response, null);
}
else
{
value = (TResult)(object)response;
}
}
catch (FacebookException e)
{
exception = e;
}
}
callback(value, ar.AsyncExternalState, exception);
}
/// <summary>
/// Makes a call to facebook server and returns the result in callback specified
/// </summary>
/// <param name="parameterList">parameters that needs to be passed to call.</param>
/// <param name="useSession">indicator if session should be used or not</param>
/// <param name="callback">Callback which will be called on response.</param>
/// <param name="state">User defined object.</param>
/// <param name="propertyName">The name of the property to retreive.</param>
public void SendRequestAsync <TObject, TResult>(Dictionary <string, string> parameterList, bool useSession, FacebookCallCompleted <TResult> callback, Object state, string propertyName)
{
SendRequestAsync(parameterList, useSession, new AsyncResult(ar => OnFacebookCallCompleted <TObject, TResult>(ar, propertyName), callback, state));
}
/// <summary>
/// Makes a call to facebook server and returns the result in callback specified
/// </summary>
/// <param name="parameterList">parameters that needs to be passed to call.</param>
/// <param name="callback">Callback which will be called on response.</param>
/// <param name="state">User defined object.</param>
/// <param name="propertyName">The name of the property to retreive.</param>
public void SendRequestAsync <TObject, TResult>(Dictionary <string, string> parameterList, FacebookCallCompleted <TResult> callback, Object state, string propertyName)
{
SendRequestAsync <TObject, TResult>(parameterList, true, callback, state, propertyName);
}
/// <summary>
/// Makes a call to facebook server and returns the result in callback specified
/// </summary>
/// <param name="parameterList">parameters that needs to be passed to call</param>
/// <param name="useSession">indicator if session should be used or not</param>
/// <param name="callback">Callback which will be called on response.</param>
/// <param name="state">User defined object</param>
public void SendRequestAsync <TObject, TResult>(Dictionary <string, string> parameterList, bool useSession, FacebookCallCompleted <TResult> callback, Object state)
{
SendRequestAsync <TObject, TResult>(parameterList, useSession, callback, state, "TypedValue");
}
/// <summary>
/// Makes a call to facebook server and returns the result in callback specified
/// </summary>
/// <typeparam name="T">Type of object to which result should be deserialized</typeparam>
/// <param name="parameterList">parameters that needs to be passed to call</param>
/// <param name="useSession">whether the call should use the facebook session or not</param>
/// <param name="callback">Callback which will be called on response.</param>
/// <param name="state">User defined object</param>
public void SendRequestAsync <T>(Dictionary <string, string> parameterList, bool useSession, FacebookCallCompleted <T> callback, Object state)
{
AsyncResult result = new AsyncResult(OnFacebookCallCompleted <T>, callback, state);
SendRequestAsync(parameterList, useSession, result);
}
/// <summary>
/// Makes a call to facebook server and returns the result in callback specified
/// </summary>
/// <typeparam name="T">Type of object to which result should be deserialized</typeparam>
/// <param name="parameterList">parameters that needs to be passed to call</param>
/// <param name="callback">Callback which will be called on response.</param>
/// <param name="state">User defined object</param>
public void SendRequestAsync <T>(Dictionary <string, string> parameterList, FacebookCallCompleted <T> callback, Object state)
{
SendRequestAsync(parameterList, true, callback, state);
}
