private void EditSelectedFeed()
{
if (FeedDataGrid.SelectedItem == null)
{
return;
}
var feed = (Feed)FeedDataGrid.SelectedItem;
var feedWindow = new FeedWindow();
feedWindow.Display(_database, feed, GetWindow(this));
}
private void HandleEditCurrentFeedMenuItemClick(object sender, RoutedEventArgs e)
{
// Create a new feed window
var feedWindow = new FeedWindow();
// Display the feed window and get the result
var result = feedWindow.Display(_database, _currentFeed, this);
// If OK was clicked...
if (result.HasValue && result.Value)
{
// Save
_database.SaveChanges();
// Update feed
DisplayFeed();
}
}
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();
}
}
}