private void _DatabaseSearcher_SearchComplete(object sender, SearchResult e)
{
lock ( m_resultLock )
{
if (LatestSearchResult == null || e.ID != LatestSearchResult.ID)
{
return;
}
EnableShowMoreButton = false;
int numResultsToDisplay = Math.Min(Settings.MaxResultsDisplayed, e.ValidResults.Count);
//need to be on the UI thread since we will be creating controls
Application.Current.Dispatcher.Invoke((Action) delegate
{
m_limitedResultCollection.Clear();
for (int i = 0; i < numResultsToDisplay; i++)
{
Controls.SearchResultControl newResult = new Controls.SearchResultControl();
newResult.SearchResultContent = e.ValidResults[i];
newResult.PreviewMouseLeftButtonUp += SearchResult_MouseLeftButtonUp;
//if a file is modified we want to know about it so we can re-sort the list if necessary and write the changes to the DB
e.ValidResults[i].OnChangedEvent -= _OnFileChanged;
e.ValidResults[i].OnChangedEvent += _OnFileChanged;
//load the file's icon
e.ValidResults[i].LoadFileIcon();
m_limitedResultCollection.Add(newResult);
}
if (m_limitedResultCollection.Count < e.ValidResults.Count)
{
EnableShowMoreButton = true;
}
if (m_limitedResultCollection.Count > 0)
{
if (e.ValidResults.Count > m_limitedResultCollection.Count)
{
LatestSearchResultDetails = $"Showing top {String.Format("{0:n0}", Settings.MaxResultsDisplayed)} of {String.Format("{0:n0}", e.ValidResults.Count)} results";
}
else
{
LatestSearchResultDetails = $"Showing {String.Format("{0:n0}", e.ValidResults.Count)} of {String.Format("{0:n0}", e.ValidResults.Count)} results";
}
}
else
{
LatestSearchResultDetails = (e.SearchTerm.Length == 0) ? "" : "Showing 0 of 0 results";
}
});
}
//remove any invalid results from the database so they don't appear in more searches
List <List <DBPredicate> > removalPredicates = new List <List <DBPredicate> >();
for (int i = 0; i < e.InvalidResults.Count; i++)
{
List <DBPredicate> filePredicates = new List <DBPredicate>();
filePredicates.Add(new DBPredicate("path", DBOperator.EQUALS, e.InvalidResults[i].Path));
removalPredicates.Add(filePredicates);
}
try
{
m_database.DeleteTransacted("FileCache", removalPredicates);
}
catch (Exception crap)
{
Settings.SessionLog += crap.Message + "\n";
Debug.WriteLine(crap.Message);
}
}
/// <summary>
/// adds more results to the displays results list when the user clicks the 'show more' button
/// </summary>
private void _ShowMoreResults(object obj)
{
lock ( m_resultLock )
{
if (m_limitedResultCollection.Count == 0 || LatestSearchResult == null || m_limitedResultCollection.Count >= LatestSearchResult.ValidResults.Count ||
m_limitedResultCollection.Count >= 2000)
{
return;
}
//add up to 100 items to the list, but if there are 10 or less results remaining after that, add them as well
int maxItemsAfterAdditions = m_limitedResultCollection.Count + Settings.MaxResultsDisplayed;
if (maxItemsAfterAdditions + 10 >= LatestSearchResult.ValidResults.Count)
{
maxItemsAfterAdditions = LatestSearchResult.ValidResults.Count;
}
//cap loaded search results at 2000 for memory and performance purposes
if (maxItemsAfterAdditions > 2000)
{
maxItemsAfterAdditions = 2000;
}
//need to be on the UI thread since we will be creating controls
Application.Current.Dispatcher.Invoke((Action) delegate
{
//increase the weight of the existing elements by a tiny amount so that the sort order isn't disturbed
//by new elements with the same weight (causing items to shift around for no apparent reason)
foreach (var control in m_limitedResultCollection)
{
control.SearchResultContent.Weight += 0.0000002;
}
for (int i = m_limitedResultCollection.Count; i < LatestSearchResult.ValidResults.Count && i < maxItemsAfterAdditions; i++)
{
Controls.SearchResultControl newResult = new Controls.SearchResultControl();
newResult.SearchResultContent = LatestSearchResult.ValidResults[i];
newResult.PreviewMouseLeftButtonUp += SearchResult_MouseLeftButtonUp;
//if a file is modified we want to know about it so we can re-sort the list if necessary and write the changes to the DB
LatestSearchResult.ValidResults[i].OnChangedEvent -= _OnFileChanged;
LatestSearchResult.ValidResults[i].OnChangedEvent += _OnFileChanged;
//load the icon for the new file
LatestSearchResult.ValidResults[i].LoadFileIcon();
m_limitedResultCollection.Add(newResult);
}
//since sorting is only performed on the elements loaded into the list, need to sort the new and old elements into place
var sortedResults = m_limitedResultCollection.OrderByDescending(x => x.SearchResultContent.Weight).ToList();
for (int i = 0; i < sortedResults.Count; i++)
{
m_limitedResultCollection.Move(m_limitedResultCollection.IndexOf(sortedResults[i]), i);
}
if (LatestSearchResult.ValidResults.Count > m_limitedResultCollection.Count)
{
LatestSearchResultDetails = $"Showing top {String.Format("{0:n0}", m_limitedResultCollection.Count)} of {String.Format("{0:n0}", LatestSearchResult.ValidResults.Count)} results";
EnableShowMoreButton = true;
}
else
{
LatestSearchResultDetails = $"Showing {String.Format("{0:n0}", LatestSearchResult.ValidResults.Count)} of {String.Format("{0:n0}", LatestSearchResult.ValidResults.Count)} results";
EnableShowMoreButton = false;
}
});
}
}