private void UpdatePodcasts()
{
if (this.RefreshingData) return;
this.RefreshingData = true;
Module.UITreeView.AsyncInvokeHandler(() => { this._moduleNode.Text = @"Updating podcasts.."; });
this._podcasts.Clear();
Workload.WorkloadManager.Instance.Add(Subscriptions.Instance.Dictionary.Count);
int i = 0;
var tasks = new Task<Podcast>[Subscriptions.Instance.Dictionary.Count];
foreach (KeyValuePair<string, PodcastSubscription> pair in Subscriptions.Instance.Dictionary)
{
var podcast = new Podcast(pair.Value);
this._podcasts.Add(podcast);
podcast.StateChanged += OnChildStateChanged;
tasks[i] = Task.Factory.StartNew(() => TaskProcessPodcast(podcast));
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("Podcasts module caught an exception while running podcast processing task: {0}", exception));
}
}
Module.UITreeView.AsyncInvokeHandler(() =>
{
Module.UITreeView.BeginUpdate();
if (this._moduleNode.Nodes.Count > 0) this._moduleNode.Nodes.Clear();
foreach (Task<Podcast> task in tasks)
{
this._moduleNode.Nodes.Add(task.Result);
foreach (Episode episode in task.Result.Episodes)
{
task.Result.Nodes.Add(episode);
}
}
Module.UITreeView.EndUpdate();
this._moduleNode.Text = @"Podcasts";
});
this.RefreshingData = false;
}
// Tries parsing a drag & dropped link to see if it's a podcast and parsable.
public override bool AddSubscriptionFromUrl(string link)
{
if (Subscriptions.Instance.Dictionary.ContainsKey(link))
{
MessageBox.Show(string.Format(i18n.PodcastSubscriptionAlreadyExists, Subscriptions.Instance.Dictionary[link].Name), i18n.SubscriptionExists, MessageBoxButtons.OK, MessageBoxIcon.Error);
return true;
}
var podcastSubscription = new PodcastSubscription { Name = "test-podcast", Url = link };
using (var podcast = new Podcast(podcastSubscription))
{
if (!podcast.IsValid()) return false;
string podcastName = "";
if (InputBox.Show(i18n.AddNewPodcastTitle, i18n.AddNewPodcastMessage, ref podcastName) != DialogResult.OK) return true;
podcastSubscription.Name = podcastName;
if (Subscriptions.Instance.Add(podcastSubscription)) this.MenuRefresh(this, new EventArgs());
}
return true;
}
private static Podcast TaskProcessPodcast(Podcast podcast)
{
podcast.Update();
return podcast;
}