/// <summary>
/// Updates the PhoneWebAuthenticationBroker on the state of the authentication
/// operation. If we navigated back by pressing the back key, then the operation
/// will be canceled. If the browser control successfully completed the operation,
/// signaled by its navigating to the PhoneWebAuthenticationBroker.EndUri, then we
/// pass the results on.
/// </summary>
protected override void OnNavigatingFrom(NavigatingCancelEventArgs e)
{
// If there is an active authentication operation in progress and we have
// finished, then we need to inform the authentication broker of the results.
// We don't want to stop the operation prematurely, such as when navigating to
// the start screen.
if (WebviewAuthentication.AuthenticationInProgress && authenticationFinished)
{
authenticationStarted = false;
authenticationFinished = false;
WebviewAuthentication.OnAuthenticationFinished(responseData, responseStatus, responseErrorDetail);
}
}
async public void LoginWithBehavior(string permissions, FacebookLoginBehavior behavior)
{
switch (behavior)
{
case FacebookLoginBehavior.LoginBehaviorMobileInternetExplorerOnly:
{
#if (WP8 || WINDOWS_PHONE)
String appId = await AppAuthenticationHelper.GetFacebookConfigValue("Facebook", "AppId");
Uri uri =
new Uri(
String.Format(
"https://m.facebook.com/v2.1/dialog/oauth?redirect_uri={0}%3A%2F%2Fauthorize&display=touch&state=%7B%220is_active_session%22%3A1%2C%22is_open_session%22%3A1%2C%22com.facebook.sdk_client_state%22%3A1%2C%223_method%22%3A%22browser_auth%22%7D&scope={2}&type=user_agent&client_id={1}&sdk=ios",
String.Format("fb{0}", appId), appId, permissions), UriKind.Absolute);
Launcher.LaunchUriAsync(uri);
break;
#else
throw new NotImplementedException("Internet explorer based login is not available on Windows");
#endif
}
case FacebookLoginBehavior.LoginBehaviorWebViewOnly:
{
String appId = await AppAuthenticationHelper.GetFacebookConfigValue("Facebook", "AppId");
#if WP8 || WINDOWS_PHONE
Uri uri =
new Uri(
String.Format(
"https://m.facebook.com/v2.1/dialog/oauth?redirect_uri={0}%3A%2F%2Fauthorize&display=touch&state=%7B%220is_active_session%22%3A1%2C%22is_open_session%22%3A1%2C%22com.facebook.sdk_client_state%22%3A1%2C%223_method%22%3A%22browser_auth%22%7D&scope={2}&type=user_agent&client_id={1}&sdk=ios",
String.Format("fb{0}", appId), appId, permissions), UriKind.Absolute);
#else
Uri uri = await GetLoginUrl(permissions);
#endif
WebviewAuthentication.AuthenticateAsync(WebAuthenticationOptions.None, uri, null);
break;
}
case FacebookLoginBehavior.LoginBehaviorWebAuthenticationBroker:
#if WINDOWS
{
try
{
// TODO: What to do here? LoginAsync returns inproc. Login with IE returns out of proc?
var result = await LoginAsync(permissions, FacebookLoginBehavior.LoginBehaviorWebAuthenticationBroker);
// when the results are available, launch the event handler
if (OnFacebookAuthenticationFinished != null)
{
OnFacebookAuthenticationFinished(result);
}
if (OnSessionStateChanged != null)
{
OnSessionStateChanged(LoginStatus.LoggedIn);
}
}
catch (FacebookOAuthException e)
{
if (OnSessionStateChanged != null)
{
OnSessionStateChanged(LoginStatus.LoggedOut);
}
}
break;
}
#else
{
throw new NotImplementedException("WebviewAuthentication is not implemented on Windows Phone");
}
#endif// WINDOWS
case FacebookLoginBehavior.LoginBehaviorApplicationOnly:
{
#if WP8 || WINDOWS_PHONE
LoginWithApp(permissions);
break;
#else
throw new NotImplementedException("Login via app is not available on Windows");
#endif
}
}
}
