//*************************************************************************
// Constructor: TwitterAuthorizationManager()
//
/// <summary>
/// Initializes a new instance of the <see
/// cref="TwitterAuthorizationManager" /> class.
/// </summary>
///
/// <param name="twitterAuthorizationControl">
/// The TwitterAuthorizationControl owned by the parent dialog. This class
/// manages the control's <see cref="TwitterAuthorizationControl.Status" />
/// property.
/// </param>
//*************************************************************************
public TwitterAuthorizationManager
(
TwitterAuthorizationControl twitterAuthorizationControl
)
{
m_oTwitterAuthorizationControl = twitterAuthorizationControl;
// If the user has already authorized, he doesn't need to do so again.
// Otherwise, assume he doesn't have a Twitter account.
m_oTwitterAuthorizationControl.Status =
TwitterAccessToken.Exists() ?
TwitterAuthorizationStatus.HasTwitterAccountAuthorized :
TwitterAuthorizationStatus.NoTwitterAccount;
AssertValid();
}
AuthorizeIfRequested()
{
AssertValid();
switch (m_oTwitterAuthorizationControl.Status)
{
case TwitterAuthorizationStatus.NoTwitterAccount:
// Delete any access token that exists.
TwitterAccessToken.Delete();
return(true);
case TwitterAuthorizationStatus.HasTwitterAccountAuthorized:
return(true);
case TwitterAuthorizationStatus.HasTwitterAccountNotAuthorized:
TwitterAccessToken.Delete();
// Continue below.
break;
default:
Debug.Assert(false);
break;
}
// Get a Twitter request token.
oAuthTwitter oTwitterAuth = new oAuthTwitter();
Uri oAuthorizationUri = new Uri(oTwitterAuth.AuthorizationLinkGet());
String sRequestToken = HttpUtility.ParseQueryString(
oAuthorizationUri.Query)["oauth_token"];
Debug.Assert(!String.IsNullOrEmpty(sRequestToken));
// Open the Twitter authorization page.
Process.Start(oAuthorizationUri.ToString());
// Tell the user that the Twitter authorization page has been opened in
// a browser window, and get the PIN that Twitter provides after
// authorization is complete.
TwitterAuthorizingDialog oTwitterAuthorizingDialog =
new TwitterAuthorizingDialog();
if (oTwitterAuthorizingDialog.ShowDialog(
m_oTwitterAuthorizationControl.ParentForm) != DialogResult.OK)
{
return(false);
}
// Convert the request token to an access token.
oTwitterAuth.Token = sRequestToken;
oTwitterAuth.AccessTokenGet(
sRequestToken, oTwitterAuthorizingDialog.Pin);
Debug.Assert(!String.IsNullOrEmpty(oTwitterAuth.Token));
Debug.Assert(!String.IsNullOrEmpty(oTwitterAuth.TokenSecret));
// Save the access token.
TwitterAccessToken oTwitterAccessToken = new TwitterAccessToken();
oTwitterAccessToken.Save(oTwitterAuth.Token, oTwitterAuth.TokenSecret);
return(true);
}
