protected override void OnClosing(CancelEventArgs e)
{
base.OnClosing(e);
// Ditch the worker
if (_feedReadWorker != null)
{
_feedReadWorker.CancelAsync();
_feedReadWorker.Dispose();
}
// Get rid of the timer
TerminateTimer();
// Save current window settings
SaveWindowSettings();
// Save settings
Settings.Default.Save();
// Save options
_database.SaveChanges();
// Get rid of the notification icon
NotificationIcon.Dispose();
}
public void Initialize()
{
// Setup the update handler
InitializeUpdate();
// Show the notification icon
NotificationIcon.Initialize(this);
// Load window settings
LoadWindowSettings();
// Set the foreground color to something that can be seen
LinkTextList.Foreground = (System.Drawing.SystemColors.Desktop.GetBrightness() < 0.5) ? Brushes.White : Brushes.Black;
HeaderLabel.Foreground = LinkTextList.Foreground;
// Create the background worker that does the actual reading
_feedReadWorker = new BackgroundWorker {
WorkerReportsProgress = true, WorkerSupportsCancellation = true
};
_feedReadWorker.DoWork += HandleFeedReadWorkerStart;
_feedReadWorker.ProgressChanged += HandleFeedReadWorkerProgressChanged;
_feedReadWorker.RunWorkerCompleted += HandleFeedReadWorkerCompleted;
// Setup the database
_database = new FeedCenterEntities();
// Initialize the command line listener
_commandLineListener = new InterprocessMessageListener(Properties.Resources.ApplicationName);
_commandLineListener.MessageReceived += HandleCommandLine;
// Handle any command line we were started with
HandleCommandLine(null, new InterprocessMessageListener.InterprocessMessageEventArgs(Environment.CommandLine));
// Create a timer to keep track of things we need to do
InitializeTimer();
// Initialize the feed display
InitializeDisplay();
// Check for update
if (Settings.Default.CheckVersionAtStartup)
{
UpdateCheck.CheckForUpdate();
}
// Show the link if updates are available
if (UpdateCheck.UpdateAvailable)
{
NewVersionLink.Visibility = Visibility.Visible;
}
Tracer.WriteLine("MainForm creation finished");
}
private void HandleNewFeed(string feedUrl)
{
// Create and configure the new feed
var feed = Feed.Create(_database);
feed.Source = feedUrl;
feed.Category = _database.DefaultCategory;
// Try to detect the feed type
var feedTypeResult = feed.DetectFeedType();
// If we can't figure it out it could be an HTML page
if (feedTypeResult.Item1 == FeedType.Unknown)
{
// Only check if the feed was able to be read - otherwise fall through and show the dialog
if (feedTypeResult.Item2.Length > 0)
{
// Create and load an HTML document with the text
var htmlDocument = new HtmlAgilityPack.HtmlDocument();
htmlDocument.LoadHtml(feedTypeResult.Item2);
// Look for all RSS or atom links in the document
var rssLinks = htmlDocument.DocumentNode.Descendants("link")
.Where(n => n.Attributes["type"] != null && (n.Attributes["type"].Value == "application/rss+xml" || n.Attributes["type"].Value == "application/atom+xml"))
.Select(n => new Tuple <string, string>(UrlHelper.GetAbsoluteUrlString(feed.Source, n.Attributes["href"].Value), WebUtility.HtmlDecode(n.Attributes["title"]?.Value ?? feedUrl)))
.Distinct()
.ToList();
// If there was only one link found then switch to feed to it
if (rssLinks.Count == 1)
{
feed.Source = rssLinks[0].Item1;
}
else
{
var feedChooserWindow = new FeedChooserWindow();
var feedLink = feedChooserWindow.Display(this, rssLinks);
if (string.IsNullOrEmpty(feedLink))
{
return;
}
feed.Source = feedLink;
}
}
}
// Read the feed for the first time
var feedReadResult = feed.Read(_database);
// See if we read the feed okay
if (feedReadResult == FeedReadResult.Success)
{
// Update the feed name to be the title
feed.Name = feed.Title;
// Add the feed to the feed table
_database.Feeds.Add(feed);
// Save the changes
_database.SaveChanges();
// Show a tip
NotificationIcon.ShowBalloonTip(string.Format(Properties.Resources.FeedAddedNotification, feed.Name), System.Windows.Forms.ToolTipIcon.Info);
// Re-initialize the feed display
DisplayFeed();
}
else
{
// Feed read failed - ceate a new feed window
var feedForm = new FeedWindow();
var dialogResult = feedForm.Display(_database, feed, this);
// Display the new feed form
if (dialogResult.HasValue && dialogResult.Value)
{
// Add the feed to the feed table
_database.Feeds.Add(feed);
// Save the changes
_database.SaveChanges();
// Re-initialize the feed display
DisplayFeed();
}
}
}