/// <summary>
/// Refresh the methods tree.
/// </summary>
/// <returns>False if could not connect to the current API installation.</returns>
private bool RefreshTree()
{
/* Retrieving a list of all API methods. */
List <ApiMethod> methods = null;
try
{
methods = this.apiConnector.GetMethods();
}
catch (WebException ex)
{
MessageBox.Show("Could not connect to selected installation.\n" + ex.Message + "\n"
+ ApiConnector.ReadResponse(ex.Response), "Error", MessageBoxButton.OK, MessageBoxImage.Warning);
return(false);
}
catch (Exception ex)
{
MessageBox.Show("Could not connect to selected installation.\n" + ex.Message, "Error",
MessageBoxButton.OK, MessageBoxImage.Warning);
return(false);
}
/* Building a tree of modules and methods. This is done by analyzing method names. */
foreach (ApiMethod method in methods)
{
string[] path = method.name.Split('/');
TreeViewItem currentnode = null;
for (var i = 1; i < path.Length; i++)
{
string part = path[i];
bool already_present = false;
ItemCollection items = (i == 1) ? this.methodsTreeView.Items : currentnode.Items;
foreach (TreeViewItem item in items)
{
if ((string)item.Header == part)
{
already_present = true;
currentnode = item;
}
}
if (!already_present)
{
currentnode = new TreeViewItem {
Header = part
};
if (i == path.Length - 1)
{
currentnode.Tag = method;
currentnode.ToolTip = method.brief_description;
}
items.Add(currentnode);
}
}
}
/* Expand all nodes of the tree (if the are more than 50 methods in this installation,
* then we skip this step), and select an initial method (request_token). */
foreach (TreeViewItem item in this.methodsTreeView.Items)
{
if (methods.Count < 50)
{
item.ExpandSubtree();
}
if ((string)item.Header == "oauth")
{
item.ExpandSubtree();
foreach (TreeViewItem subitem in item.Items)
{
if ((string)subitem.Header == "request_token")
{
subitem.IsSelected = true;
}
}
}
}
return(true);
}
/// <summary>
/// User clicks the "Quick Fill" button.
/// </summary>
private void quickFillButton_Click(object sender, RoutedEventArgs e)
{
if (this.consumerKeyTextbox.Text == "")
{
if (MessageBox.Show("In order to get Access Tokens, you have to register a Consumer Key first. " +
"Would you like to register a new Consumer Key now?", "Consumer Key is missing", MessageBoxButton.OKCancel,
MessageBoxImage.Question) == MessageBoxResult.OK)
{
/* Direct the user to USOS API Developer Center. */
try
{
System.Diagnostics.Process.Start(this.apiConnector.GetURL(new ApiMethod {
name = "developers/"
}));
}
catch (Exception)
{
MessageBox.Show("It appears your system doesn't know in which application to open a http:// protocol. Check your browser settings.\n\n" + this.apiConnector.GetURL(new ApiMethod {
name = "developers/"
}));
return;
}
}
return;
}
/* Show initial dialog, user will choose desired scopes. */
var initialDialog = new QuickFillWindow();
initialDialog.Owner = this;
if (initialDialog.ShowDialog() == false)
{
return; // user cancelled
}
/* Retrieve a list of selected scopes. */
List <string> scopeKeys = initialDialog.GetSelectedScopeKeys();
/* Build request_token URL. We will use 'oob' as callback, and
* require scopes which the user have selected. */
var request_token_args = new Dictionary <string, string>();
request_token_args.Add("oauth_callback", "oob");
if (scopeKeys.Count > 0)
{
request_token_args.Add("scopes", string.Join("|", scopeKeys));
}
try
{
/* Get and parse the request_token response string. */
string tokenstring;
try
{
string request_token_url = this.apiConnector.GetURL(new ApiMethod {
name = "services/oauth/request_token"
},
request_token_args, this.consumerKeyTextbox.Text, this.consumerSecretTextbox.Text, "", "", true);
tokenstring = this.apiConnector.GetResponse(request_token_url);
}
catch (WebException ex)
{
/* Let's try the same URL, but without SSL. This will allow it to work on
* developer installations (which do not support SSL by default). If it still
* throws exceptions, pass. */
string request_token_url = this.apiConnector.GetURL(new ApiMethod {
name = "services/oauth/request_token"
},
request_token_args, this.consumerKeyTextbox.Text, this.consumerSecretTextbox.Text, "", "", false);
tokenstring = this.apiConnector.GetResponse(request_token_url);
}
string request_token = null;
string request_token_secret = null;
string[] parts = tokenstring.Split('&');
foreach (string part in parts)
{
if (part.StartsWith("oauth_token="))
{
request_token = part.Substring("oauth_token=".Length);
}
if (part.StartsWith("oauth_token_secret="))
{
request_token_secret = part.Substring("oauth_token_secret=".Length);
}
}
if (request_token == null || request_token_secret == null)
{
MessageBox.Show("Couldn't parse request token. Try to do this sequence manually!", "Error", MessageBoxButton.OK, MessageBoxImage.Warning);
return;
}
/* Build authorize URL and open it in user's browser. */
var authorize_args = new Dictionary <string, string>();
authorize_args.Add("oauth_token", request_token);
var authorize_url = this.apiConnector.GetURL(new ApiMethod {
name = "services/oauth/authorize"
}, authorize_args);
try
{
System.Diagnostics.Process.Start(authorize_url);
}
catch (Exception)
{
MessageBox.Show("It appears your system doesn't know in which application to open a http:// protocol. Check your browser settings.\n\n" + authorize_url);
return;
}
/* Open a with PIN request and wait for user's entry. */
var pinWindow = new QuickFillPINWindow();
pinWindow.Owner = this;
pinWindow.ShowDialog();
string verifier = pinWindow.GetPIN();
/* Build the access_token URL. */
var access_token_args = new Dictionary <string, string>();
access_token_args.Add("oauth_verifier", verifier);
try
{
var access_token_url = this.apiConnector.GetURL(new ApiMethod {
name = "services/oauth/access_token"
}, access_token_args,
this.consumerKeyTextbox.Text, this.consumerSecretTextbox.Text, request_token, request_token_secret, true);
tokenstring = this.apiConnector.GetResponse(access_token_url);
}
catch (WebException ex)
{
/* Let's try the same URL, but without SSL. This will allow it to work on
* developer installations (which do not support SSL by default). If it still
* throws exceptions, pass. */
var access_token_url = this.apiConnector.GetURL(new ApiMethod {
name = "services/oauth/access_token"
}, access_token_args,
this.consumerKeyTextbox.Text, this.consumerSecretTextbox.Text, request_token, request_token_secret, false);
tokenstring = this.apiConnector.GetResponse(access_token_url);
}
/* Get and parse the access_token response string. */
string access_token = null;
string access_token_secret = null;
parts = tokenstring.Split('&');
foreach (string part in parts)
{
if (part.StartsWith("oauth_token="))
{
access_token = part.Substring("oauth_token=".Length);
}
if (part.StartsWith("oauth_token_secret="))
{
access_token_secret = part.Substring("oauth_token_secret=".Length);
}
}
if (access_token == null || access_token_secret == null)
{
MessageBox.Show("Couldn't parse access token. Try to do this sequence manually!", "Error", MessageBoxButton.OK, MessageBoxImage.Warning);
return;
}
/* Fill up the token textboxes with an Access Token we received. */
this.tokenTextbox.Text = access_token;
this.tokenSecretTextbox.Text = access_token_secret;
}
catch (WebException ex)
{
MessageBox.Show("A problem occured. Couldn't complete the Quick Fill.\n\n" + ex.Message + "\n"
+ ApiConnector.ReadResponse(ex.Response), "Error", MessageBoxButton.OK, MessageBoxImage.Warning);
}
}
private void Window_Loaded(object sender, RoutedEventArgs e)
{
if (System.Deployment.Application.ApplicationDeployment.IsNetworkDeployed)
{
System.Deployment.Application.ApplicationDeployment ad = System.Deployment.Application.ApplicationDeployment.CurrentDeployment;
this.Title += " (v. " + ad.CurrentVersion.ToString() + ")";
}
this.varsCache.BindWithTextBox("consumer_key", this.consumerKeyTextbox);
this.varsCache.BindWithTextBox("consumer_secret", this.consumerSecretTextbox);
this.varsCache.BindWithTextBox("token", this.tokenTextbox);
this.varsCache.BindWithTextBox("token_secret", this.tokenSecretTextbox);
/* We use a "mother installation" for the first USOS API request. We need to
* get a list of all USOS API installations. */
var motherInstallation = new ApiInstallation
{
base_url = "http://apps.usos.edu.pl/" // will change when out of Beta!
};
this.apiConnector = new ApiConnector(motherInstallation);
this.apiConnector.BeginRequest += new EventHandler(apiConnector_BeginRequest);
this.apiConnector.EndRequest += new EventHandler(apiConnector_EndRequest);
/* Fill up the installations list. */
try
{
this.installationsComboBox.Items.Clear();
var installations = this.apiConnector.GetInstallations();
installations.Add(new ApiInstallation() { base_url = "http://127.0.0.1:8000/" });
foreach (var installation in installations)
{
this.installationsComboBox.Items.Add(new ComboBoxItem
{
Content = installation.base_url,
Tag = installation
});
}
}
catch (WebException)
{
MessageBox.Show("Error occured when trying to access USOS API mother server. Could not populate USOS API installations list.",
"Network error", MessageBoxButton.OK, MessageBoxImage.Exclamation);
}
if (this.installationsComboBox.Items.Count > 0)
{
/* Now we have a list of all installations in a combo box. We choose
* one of them. */
this.installationsComboBox.SelectedIndex = 0;
this.ReloadInstallation();
}
}
