private void UpdateFeeds()
{
if (this.RefreshingData) return;
this.RefreshingData = true;
Module.UITreeView.AsyncInvokeHandler(() => { this._moduleNode.Text = @"Updating feeds.."; });
this._feeds.Clear();
Workload.WorkloadManager.Instance.Add(Subscriptions.Instance.Dictionary.Count);
int i = 0;
var tasks = new Task<Feed>[Subscriptions.Instance.Dictionary.Count];
foreach(KeyValuePair<string,FeedSubscription> pair in Subscriptions.Instance.Dictionary)
{
var feed = new Feed(pair.Value);
this._feeds.Add(feed);
feed.StateChanged += OnChildStateChanged;
tasks[i] = Task.Factory.StartNew(() => TaskProcessFeed(feed));
i++;
}
var tasksWaitQueue = tasks;
while (tasksWaitQueue.Length > 0)
{
int taskIndex = Task.WaitAny(tasksWaitQueue);
tasksWaitQueue = tasksWaitQueue.Where((t) => t != tasksWaitQueue[taskIndex]).ToArray();
Workload.WorkloadManager.Instance.Step();
}
try { Task.WaitAll(tasks); }
catch(AggregateException aggregateException)
{
foreach(var exception in aggregateException.InnerExceptions)
{
LogManager.Instance.Write(LogMessageTypes.Error, string.Format("Feeds module caught an exception while running feed processing task: {0}", exception));
}
}
Module.UITreeView.AsyncInvokeHandler(() =>
{
Module.UITreeView.BeginUpdate();
if (this._moduleNode.Nodes.Count > 0) this._moduleNode.Nodes.Clear();
foreach (Task<Feed> task in tasks)
{
this._moduleNode.Nodes.Add(task.Result);
foreach(Story story in task.Result.Stories)
{
task.Result.Nodes.Add(story);
}
}
Module.UITreeView.EndUpdate();
this._moduleNode.Text = @"Feeds";
});
this.RefreshingData = false;
}
// Tries parsing a drag & dropped link to see if it's a feed and parsable.
public override bool AddSubscriptionFromUrl(string link)
{
if (Subscriptions.Instance.Dictionary.ContainsKey(link))
{
MessageBox.Show(string.Format(i18n.FeedSubscriptionAlreadyExists, Subscriptions.Instance.Dictionary[link].Name), i18n.SubscriptionExists, MessageBoxButtons.OK, MessageBoxIcon.Error);
return true;
}
var feedSubscription = new FeedSubscription { Name = "test-feed", Url = link };
using (var feed = new Feed(feedSubscription))
{
if (!feed.IsValid()) return false;
string feedName = "";
if (InputBox.Show(i18n.AddNewFeedTitle, i18n.AddNewFeedMessage, ref feedName) != DialogResult.OK) return true;
feedSubscription.Name = feedName;
if (Subscriptions.Instance.Add(feedSubscription)) this.MenuRefresh(this, new EventArgs());
}
return true;
}
// The module updater task.
private static Feed TaskProcessFeed(Feed feed)
{
feed.Update();
return feed;
}
