private void RatingCellEdited(object o, EditedArgs args)
{
TreeIter iter;
treeview1.Model.GetIter(out iter, new TreePath(args.Path));
Movie movie = (Movie)treeview1.Model.GetValue(iter, 0);
string input = args.NewText.Trim();
if (input == string.Empty)
{
Console.Error.WriteLine("Remove rating.");
if (ratings.Remove(movie.ID))
{
rating_predictor.RemoveRating(current_user_id, movie.ID);
}
PredictAllRatings();
return;
}
input = input.Replace(',', '.'); // also allow "German" floating point numbers
try
{
double rating = double.Parse(input, CultureInfo.InvariantCulture);
if (rating > rating_predictor.MaxRating)
{
rating = rating_predictor.MaxRating;
}
if (rating < rating_predictor.MinRating)
{
rating = rating_predictor.MinRating;
}
// if rating already exists, remove it first
if (ratings.ContainsKey(movie.ID))
{
rating_predictor.RemoveRating(current_user_id, movie.ID);
}
// add the new rating
rating_predictor.AddRating(current_user_id, movie.ID, rating);
ratings[movie.ID] = rating;
// recompute ratings
PredictAllRatings();
}
catch (FormatException)
{
Console.Error.WriteLine("Could not parse input '{0}' as a number.", input);
}
}
