public AuthorizationNavigationManager(Frame frame, AuthorizationNavigationMode navigationMode)
{
if (frame == null)
{
throw new ArgumentNullException("frame");
}
this._frame = frame;
this.NavigationMode = navigationMode;
// Since there is no reliable way to determine if a control is loaded, we have to assume it
// is loaded until told otherwise
this.IsLoaded = true;
this.InitializeBindings();
}
private AuthorizationNavigationMode GetContentNavigationMode(object content)
{
AuthorizationNavigationMode navigationMode = AuthorizationNavigationMode.None;
DependencyObject contentDo = content as DependencyObject;
if (contentDo != null)
{
navigationMode = Authorization.GetNavigationMode(contentDo);
}
if (navigationMode == AuthorizationNavigationMode.None)
{
navigationMode = Authorization.GetNavigationMode(this._frame);
}
return(navigationMode);
}
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();
}
}
}
private void AuthorizeFrameContent()
{
if (!AuthorizationNavigationManager.IsAuthorized(this.GetCurrentUri(), this._frame.Content))
{
AuthorizationNavigationMode navigationMode = this.GetContentNavigationMode(this._frame.Content);
if (WebContextBase.Current.Authentication.User.Identity.IsAuthenticated ||
(navigationMode == AuthorizationNavigationMode.Redirect))
{
// If the user is authenticated but not authorized, he needs to be redirected
this.Redirect();
}
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, null);
}
}
}
public static void SetNavigationMode(DependencyObject target, AuthorizationNavigationMode value)
{
target.SetValue(Authorization.NavigationModeProperty, value);
}
