public object ConvertSourceToObject(PublishedPropertyType propertyType, object source, bool preview)
{
// Get the value as a string
string str = source as string;
// Deserialize the string
return(String.IsNullOrWhiteSpace(str) ? null : TwitterOAuthData.Deserialize(str));
}
protected void Page_Load(object sender, EventArgs e) {
Callback = Request.QueryString["callback"];
ContentTypeAlias = Request.QueryString["contentTypeAlias"];
PropertyAlias = Request.QueryString["propertyAlias"];
// Get the prevalue options
TwitterOAuthPreValueOptions options = TwitterOAuthPreValueOptions.Get(ContentTypeAlias, PropertyAlias);
if (!options.IsValid) {
Content.Text += "<p><strong>ContentTypeAlias</strong> " + ContentTypeAlias + "</p>";
Content.Text += "<p><strong>PropertyAlias</strong> " + PropertyAlias + "</p>";
Content.Text += "Hold on now! The options of the underlying prevalue editor isn't valid.";
return;
}
// Configure the OAuth client based on the options of the prevalue options
TwitterOAuthClient client = new TwitterOAuthClient {
ConsumerKey = options.ConsumerKey,
ConsumerSecret = options.ConsumerSecret,
Callback = Request.Url.ToString()
};
// Check whether the user has denied the app
if (HasUserDenied) {
Session.Remove(DeniedToken);
Content.Text = "<div class=\"error\">Error: The app was denied access to your account.</div>";
return;
}
#region OAuth 1.0a - Step 3
if (OAuthToken != null) {
// Grab the request token from the session
OAuthRequestToken token = Session[OAuthToken] as OAuthRequestToken;
// Check whether the requets token was found in the current session
if (token == null) {
Content.Text = "<div class=\"error\">An error occured. Timeout?</div>";
return;
}
// Update the token and token secret
client.Token = token.Token;
client.TokenSecret = token.TokenSecret;
// Now get the access token
try {
OAuthAccessToken accessToken = client.GetAccessToken(OAuthVerifier);
client.Token = accessToken.Token;
client.TokenSecret = accessToken.TokenSecret;
} catch (Exception) {
Content.Text = "<div class=\"error\">Unable to retrieve access token from <b>Twitter.com</b>.</div>";
return;
}
try {
// Initialize an instance of TwitterService
TwitterService service = TwitterService.CreateFromOAuthClient(client);
// Get information about the server
TwitterUser user = service.Account.VerifyCredentials().Body;
Content.Text += "<p>Hi <strong>" + (String.IsNullOrEmpty(user.Name) ? user.ScreenName : user.Name) + "</strong></p>";
Content.Text += "<p>Please wait while you're being redirected...</p>";
// Set the callback data
TwitterOAuthData data = new TwitterOAuthData {
Id = user.Id,
ScreenName = user.ScreenName,
Name = String.IsNullOrEmpty(user.Name) ? "" : user.Name,
Avatar = user.ProfileImageUrlHttps,
ConsumerKey = client.ConsumerKey,
ConsumerSecret = client.ConsumerSecret,
AccessToken = client.Token,
AccessTokenSecret = client.TokenSecret
};
// Update the UI and close the popup window
Page.ClientScript.RegisterClientScriptBlock(GetType(), "callback", String.Format(
"self.opener." + Callback + "({0}); window.close();",
data.Serialize()
), true);
} catch (TwitterException ex) {
Content.Text = "<div class=\"error\">Error in the communication with Twitter.com<br /><br />" + ex.Message + " (Code: " + ex.Code + ")</div>";
} catch (Exception) {
Content.Text = "<div class=\"error\">Error in the communication with Twitter.com</div>";
}
return;
}
#endregion
#region OAuth 1.0a - Step 1
// Get a request token from the Twitter API
OAuthRequestToken requestToken = client.GetRequestToken();
// Save the token information to the session so we can grab it later
Session[requestToken.Token] = requestToken;
// Redirect the user to the authentication page at Twitter.com
Response.Redirect(requestToken.AuthorizeUrl);
#endregion
}
