private bool FilterCDRow(object row)
{
if (string.IsNullOrEmpty(FilterString))
{
return(true);
}
ArtistOverviewCDItem cdItem = row as ArtistOverviewCDItem;
if (cdItem != null)
{
string filterString = FilterString.ToLower();
return(FilterTreeCDRow(cdItem, true));
}
ArtistOverviewCDSetItem cdSetItem = row as ArtistOverviewCDSetItem;
if (cdSetItem != null)
{
string filterString = FilterString.ToLower();
return(FilterTreeCDSetRow(cdSetItem, true));
}
return(true);
}
internal bool FilterTreeCDSetRow(ArtistOverviewCDSetItem cdSetItem, bool withCDs)
{
if (string.IsNullOrEmpty(FilterString))
{
return(true);
}
string filterString = FilterString.ToLower();
if (cdSetItem.Title.IndexOf(filterString, StringComparison.InvariantCultureIgnoreCase) >= 0)
{
return(true);
}
if (withCDs)
{
foreach (ArtistOverviewCDItem cdItem in cdSetItem.CDs)
{
if (FilterTreeCDRow(cdItem, withCDs))
{
return(true);
}
}
}
return(false);
}
private void TreeView_Expanded(object sender, RoutedEventArgs e)
{
TreeViewItem item = e.OriginalSource as TreeViewItem;
if (item != null && item.DataContext is ArtistOverviewItem)
{
if (!FilterArtistRow(item.DataContext as ArtistOverviewItem))
{
System.ComponentModel.ICollectionView view = CollectionViewSource.GetDefaultView(item.ItemsSource);
if (view != null)
{
view.Filter = new Predicate <object>(FilterCDRow);
}
}
}
if (item != null && item.DataContext is ArtistOverviewCDSetItem)
{
ArtistOverviewCDSetItem cdSetItem = item.DataContext as ArtistOverviewCDSetItem;
if (!FilterTreeCDSetRow(cdSetItem, false) && (cdSetItem.Parent == null || !FilterArtistRow(cdSetItem.Parent)))
{
System.ComponentModel.ICollectionView view = CollectionViewSource.GetDefaultView(item.ItemsSource);
if (view != null)
{
view.Filter = new Predicate <object>(FilterCDRow);
}
}
}
if (item != null && item.DataContext is ArtistOverviewCDItem)
{
ArtistOverviewCDItem cdItem = item.DataContext as ArtistOverviewCDItem;
if (cdItem.Tracks == null || cdItem.Tracks.Count == 1 && cdItem.Tracks[0].ID == 0)
{
CD cd = DataBase.GetCDById(cdItem.ID);
cdItem.Tracks.Clear();
foreach (Track track in cd.Tracks)
{
ArtistOverviewTrackItem trackItem = new ArtistOverviewTrackItem();
trackItem.ID = track.ID;
trackItem.Title = GetTrackTitleText(cd, track);
trackItem.Soundfile = track.Soundfile;
cdItem.Tracks.Add(trackItem);
}
item.ItemsSource = cdItem.Tracks;
}
if (!FilterTreeCDRow(cdItem, false) && (cdItem.Parent == null || !FilterArtistRow(cdItem.Parent)))
{
System.ComponentModel.ICollectionView view = CollectionViewSource.GetDefaultView(item.ItemsSource);
if (view != null)
{
view.Filter = new Predicate <object>(FilterTrackRow);
}
}
}
}
