private void PodcastFeedAddedOrRemoved(PodcastFeedEventArgs args, bool added)
{
if (args.Feed != null)
{
PodcastFeedInfo feed = args.Feed;
if (added)
{
podcast_feed_model.QueueAdd(feed);
}
else
{
// Only single select is handled at the moment.
// This will need to be updated if multiple feed selection becomes available.
TreeIter iter = feed.TreeIter;
podcast_feed_model.QueueRemove(feed);
podcast_feed_model.IterNext(ref iter);
if (podcast_feed_model.GetPath(iter) != null)
{
podcast_feed_view.Selection.SelectIter(iter);
podcast_feed_view.ScrollToIter(iter);
return;
}
// Should not select first, should select previous. Why
// is there no 'TreeModel.IterPrev' method?
podcast_feed_model.GetIterFirst(out iter);
if (podcast_feed_model.GetPath(iter) != null)
{
podcast_feed_view.Selection.SelectIter(iter);
podcast_feed_view.ScrollToIter(iter);
}
}
}
else if (args.Feeds != null)
{
ICollection feeds = args.Feeds;
if (added)
{
podcast_feed_model.QueueAdd(feeds);
}
else
{
podcast_feed_model.QueueRemove(feeds);
}
}
Update();
}
public void ScrollToIter(TreeIter iter)
{
if (iter.Equals(TreeIter.Zero) ||
!model.IterIsValid(iter))
{
return;
}
TreePath path;
path = model.GetPath(iter);
if (path != null)
{
ScrollToCell(path, null, false, 0, 0);
}
}