protected void btnVerify_Click(object sender, System.EventArgs e)
{
try
{
this._feed = this._remoteContentModule.VerifyFeed(this.txtUrl.Text);
BindFeed();
this.btnSave.Enabled = true;
base.ShowMessage("Feed is valid");
}
catch (Exception ex)
{
this.btnSave.Enabled = false;
base.ShowError(ex.Message);
}
}
/// <summary>
/// Delete a Feed.
/// </summary>
/// <param name="feed"></param>
public void DeleteFeed(Feed feed)
{
ITransaction tx = base.NHSession.BeginTransaction();
try
{
base.NHSession.Delete(feed);
tx.Commit();
}
catch (Exception ex)
{
tx.Rollback();
throw new Exception("Unable to delete Feed", ex);
}
}
private void UpdateFeed(ISession session, RemoteContentModule module, Feed feed)
{
using (ITransaction tx = session.BeginTransaction())
{
try
{
session.Lock(feed, LockMode.None);
module.RefreshFeedContents(feed);
session.Update(feed);
tx.Commit();
}
catch
{
tx.Rollback();
throw;
}
}
}
/// <summary>
/// Default constructor.
/// </summary>
/// <param name="feed"></param>
/// <param name="session"></param>
public FeedFetcher(Feed feed, ISession session)
{
this._feed = feed;
this._session = session;
}
/// <summary>
/// Create a Feed object from XML content.
/// </summary>
/// <param name="doc"></param>
/// <param name="feedUrl"></param>
/// <returns></returns>
private Feed XmlContentToFeed(XmlDocument doc, string feedUrl)
{
Feed feed = new Feed();
feed.Url = feedUrl;
feed.Title = doc.SelectSingleNode("//channel/title").InnerText;
return feed;
}
private void SaveFeed(Feed feed, ISession session)
{
// First check if the pubdate exists. If not, use DateTime.Now.
if (feed.PubDate == DateTime.MinValue)
{
feed.PubDate = DateTime.Now;
}
ITransaction tx = session.BeginTransaction();
try
{
session.SaveOrUpdate(feed);
tx.Commit();
}
catch (Exception ex)
{
tx.Rollback();
throw new Exception("Unable to save Feed", ex);
}
}
/// <summary>
/// Save a Feed.
/// </summary>
/// <param name="feed"></param>
public void SaveFeed(Feed feed)
{
// uses the ISession from the HttpContext
SaveFeed(feed, base.NHSession);
}
/// <summary>
/// Refresh the items of a single feed. It doesn't save the new items!
/// </summary>
/// <param name="feed"></param>
public void RefreshFeedContents(Feed feed)
{
feed.FeedItems.Clear();
try
{
XmlDocument doc = GetFeedXml(feed.Url);
// Create an XmlNamespaceManager for resolving namespaces.
XmlNamespaceManager nsmgr = new XmlNamespaceManager(doc.NameTable);
nsmgr.AddNamespace("dc", "http://purl.org/dc/elements/1.1/");
XmlNodeList xmlItems = doc.SelectNodes("//channel/item");
foreach (XmlNode xmlItem in xmlItems)
{
FeedItem feedItem = new FeedItem();
// Truncate title to 100 characters
string title = xmlItem.SelectSingleNode("title").InnerText;
if (title.Length > 100)
{
title = title.Substring(0, 100);
}
feedItem.Title = title;
feedItem.Url = xmlItem.SelectSingleNode("link").InnerText;
if (xmlItem.SelectSingleNode("pubDate") != null)
{
feedItem.PubDate = RFC2822Date.Parse(xmlItem.SelectSingleNode("pubDate").InnerText);
}
else
{
feedItem.PubDate = DateTime.Now;
}
if (this._showContents && xmlItem.SelectSingleNode("description") != null)
{
feedItem.Content = xmlItem.SelectSingleNode("description").InnerText;
}
if (xmlItem.SelectSingleNode("author", nsmgr) != null)
{
feedItem.Author = xmlItem.SelectSingleNode("author", nsmgr).InnerText;
}
else if (xmlItem.SelectSingleNode("dc:creator", nsmgr) != null)
{
feedItem.Author = xmlItem.SelectSingleNode("dc:creator", nsmgr).InnerText;
}
feedItem.Feed = feed;
feed.FeedItems.Add(feedItem);
}
feed.SortAndFilter();
}
catch (Exception ex)
{
log.Error("Error refreshing feed contents for: " + feed.Title, ex);
throw;
}
}
protected void Page_Load(object sender, System.EventArgs e)
{
this._remoteContentModule = base.Module as RemoteContentModule;
this.btnCancel.Attributes.Add("onclick", String.Format("document.location.href='AdminRemoteContent.aspx{0}'", base.GetBaseQueryString()));
if (Request.QueryString["FeedId"] != null)
{
int feedId = Int32.Parse(Request.QueryString["FeedId"]);
if (feedId > 0)
{
this._feed = this._remoteContentModule.GetFeedById(feedId);
if (! this.IsPostBack)
{
BindFeed();
}
this.btnSave.Enabled = true;
this.btnDelete.Visible = true;
this.btnDelete.Attributes.Add("onclick", "return confirm('Are you sure?');");
}
else
{
this._feed = new Feed();
this.btnSave.Enabled = false;
}
}
}