public void AddResults(List <Result> newResults, string resultId)
{
lock (_resultsUpdateLock)
{
// todo use async to do new result calculation
var resultsCopy = _results.ToList();
var oldResults = resultsCopy.Where(r => r.PluginID == resultId).ToList();
// intersection of A (old results) and B (new newResults)
var intersection = oldResults.Intersect(newResults).ToList();
// remove result of relative complement of B in A
foreach (var result in oldResults.Except(intersection))
{
resultsCopy.Remove(result);
}
// update scores
foreach (var result in newResults)
{
if (IsTopMostResult(result))
{
result.Score = int.MaxValue;
}
}
// update index for result in intersection of A and B
foreach (var commonResult in intersection)
{
int oldIndex = resultsCopy.IndexOf(commonResult);
int oldScore = resultsCopy[oldIndex].Score;
int newScore = newResults[newResults.IndexOf(commonResult)].Score;
if (newScore != oldScore)
{
var oldResult = resultsCopy[oldIndex];
oldResult.Score = newScore;
resultsCopy.RemoveAt(oldIndex);
int newIndex = InsertIndexOf(newScore, resultsCopy);
resultsCopy.Insert(newIndex, oldResult);
}
}
// insert result in relative complement of A in B
foreach (var result in newResults.Except(intersection))
{
int newIndex = InsertIndexOf(result.Score, resultsCopy);
resultsCopy.Insert(newIndex, result);
}
// update UI in one run, so it can avoid UI flickering
_results.Update(resultsCopy);
lbResults.Margin = lbResults.Items.Count > 0 ? new Thickness {
Top = 8
} : new Thickness {
Top = 0
};
SelectFirst();
}
}