private static void OnTweetTextChanged(DependencyObject obj, DependencyPropertyChangedEventArgs args)
{
string text = args.NewValue as string;
if (!string.IsNullOrEmpty(text))
{
TweetTextBlock textblock = (TweetTextBlock)obj;
textblock.Inlines.Clear();
textblock.Inlines.Add(" ");
string[] words = Regex.Split(text, @"([ \(\)\{\}\[\]])");
string possibleUserName = words[0].ToString();
if ((possibleUserName.Length > 1) && (possibleUserName.Substring(1, 1) == "@"))
{
textblock = FormatName(textblock, possibleUserName);
words.SetValue("", 0);
}
foreach (string word in words)
{
// clickable hyperlinks
if (UrlShorteningService.IsUrl(word))
{
try
{
Hyperlink link = new Hyperlink();
link.NavigateUri = new Uri(word);
link.Inlines.Add(word);
link.Click += new RoutedEventHandler(link_Click);
link.ToolTip = "Open link in the default browser";
textblock.Inlines.Add(link);
}
catch
{
//TODO:What are we catching here? Why? Log it?
textblock.Inlines.Add(word);
}
}
// clickable @name
else if (word.StartsWith("@"))
{
textblock = FormatName(textblock, word);
}
// clickable #hashtag
else if (word.StartsWith("#"))
{
string hashtag = String.Empty;
Match foundHashtag = Regex.Match(word, @"#(\w+)(?<suffix>.*)");
if (foundHashtag.Success)
{
hashtag = foundHashtag.Groups[1].Captures[0].Value;
Hyperlink tag = new Hyperlink();
tag.Inlines.Add(hashtag);
string hashtagUrl = "http://search.twitter.com/search?q=%23{0}";
// The main application has access to the Settings class, where a
// user-defined hashtagUrl can be stored. This hardcoded one that
// is used to set the NavigateUri is just a default behavior that
// will be used if the click event is not handled for some reason.
tag.NavigateUri = new Uri(String.Format(hashtagUrl, hashtag));
tag.ToolTip = "Show statuses that include this hashtag";
tag.Tag = hashtag;
tag.Click += new RoutedEventHandler(hashtag_Click);
textblock.Inlines.Add("#");
textblock.Inlines.Add(tag);
textblock.Inlines.Add(foundHashtag.Groups["suffix"].Captures[0].Value);
}
}
else
{
textblock.Inlines.Add(word);
}
}
textblock.Inlines.Add(" ");
}
}
public void Addresses_that_have_commas_should_be_urls()
{
Assert.IsTrue(UrlShorteningService.IsUrl("http://www.foo.com/x,123"));
}
public void Addresses_that_dont_end_in_a_filename_extension_should_be_urls()
{
Assert.IsTrue(UrlShorteningService.IsUrl("http://www.foo.com/x"));
}
public void Web_site_root_addresses_should_be_urls()
{
Assert.IsTrue(UrlShorteningService.IsUrl("http://www.foo.com/"));
}
public void Things_that_start_with_feed_should_not_be_urls()
{
Assert.IsFalse(UrlShorteningService.IsUrl("feed://www.foo.com/blah/blah.aspx"));
}
public void Things_that_start_with_https_should_not_be_urls()
{
Assert.IsTrue(UrlShorteningService.IsUrl("https://www.foo.com/blah/blah.aspx"));
}