public IAsyncResult BeginLoad(Uri targetUri, Uri currentUri, AsyncCallback userCallback, object asyncState)
{
AuthorizationAsyncResult result = new AuthorizationAsyncResult(userCallback, asyncState);
result.InnerAsyncResult = this._loader.BeginLoad(targetUri, currentUri, this.HandleLoadCompleted, result);
return(result);
}
public LoadResult EndLoad(IAsyncResult asyncResult)
{
AuthorizationAsyncResult result = AsyncResultBase.EndAsyncOperation <AuthorizationAsyncResult>(asyncResult);
if (result.Error != null)
{
throw result.Error;
}
return(result.LoadResult);
}
private void HandleRequestAuthenticationCompleted(object userState)
{
AuthorizationAsyncResult result = (AuthorizationAsyncResult)userState;
if (!result.CancellationRequested)
{
if (Authorization.Authorize(result.LoadResult.LoadedContent) == AuthorizationResult.Allowed)
{
// Direct the user to the requested page
result.Complete();
}
else
{
// If the user is still not authorized, he needs to be redirected
result.LoadResult = new LoadResult(this.DefaultSource);
result.Complete();
}
}
}
private void HandleLoadCompleted(IAsyncResult asyncResult)
{
AuthorizationAsyncResult result = (AuthorizationAsyncResult)asyncResult.AsyncState;
if (!result.CancellationRequested)
{
try
{
result.LoadResult = this._loader.EndLoad(result.InnerAsyncResult);
AuthorizationNavigationMode navigationMode = this.GetContentNavigationMode(result.LoadResult.LoadedContent);
if (Authorization.Authorize(result.LoadResult.LoadedContent) == AuthorizationResult.Allowed)
{
// Direct the user to the requested page
result.Complete();
}
else if (WebContextBase.Current.Authentication.User.Identity.IsAuthenticated ||
(navigationMode == AuthorizationNavigationMode.Redirect))
{
// If the user is authenticated but not authorized, he needs to be redirected
result.LoadResult = new LoadResult(this.DefaultSource);
result.Complete();
}
else if (navigationMode == AuthorizationNavigationMode.Prompt)
{
if (Authorization.Prompter == null)
{
throw new InvalidOperationException("Authorization.Prompter cannot be null when the navigationMode is 'Prompt'.");
}
// If the user is not authenticated, we need to prompt for re-authentication or redirect
Authorization.Prompter.RequestAuthentication(this.HandleRequestAuthenticationCompleted, result);
}
}
catch (InvalidOperationException ex)
{
result.Error = ex;
result.Complete();
}
}
}
public void CancelLoad(IAsyncResult asyncResult)
{
AuthorizationAsyncResult result = AsyncResultBase.EndAsyncOperation <AuthorizationAsyncResult>(asyncResult, true);
this._loader.CancelLoad(result.InnerAsyncResult);
}
