/// <summary>
/// Create a child node.
/// </summary>
public HierarchicalLibraryItem(LibraryItem item, HierarchicalLibraryItem parent)
{
Item = item;
Parent = parent;
Parent.Children.Add(this);
Children = new ObservableCollection<HierarchicalLibraryItem>();
Controller = Parent.Controller;
Id = -1;
HighestChildId = -1;
}
/// <summary>
/// Create a root node.
/// </summary>
public HierarchicalLibraryItem(LibraryItem item, HierarchyController controller)
{
Item = item;
Parent = null;
Children = new ObservableCollection<HierarchicalLibraryItem>();
Controller = controller;
Id = -1;
HighestChildId = -1;
Controller.RootLevelNodes.Add(this);
}
public IEnumerable<LibraryItem> Expand(LibraryItem parent)
{
if (parent is Artist && m_ArtistExpansion.ContainsKey(parent))
{
return m_ArtistExpansion[parent].ToList();
}
else if (parent is Album && m_AlbumExpansion.ContainsKey(parent))
{
return m_AlbumExpansion[parent].ToList();
}
else if (parent is Genre && m_GenreExpansion.ContainsKey(parent))
{
return m_GenreExpansion[parent].ToList();
}
else if (parent is GenreFilteredAlbum && m_GenreFilteredAlbumExpansion.ContainsKey(parent))
{
return m_GenreFilteredAlbumExpansion[parent].ToList();
}
throw new Exception("Database.Expand(): cannot expand object: " + parent.ToString());
}
public IndexedLibraryItem(LibraryItem item, int position, bool isSelected)
{
Item = item;
Position = position;
IsSelected = isSelected;
}
public IndexedLibraryItem(LibraryItem item, int position)
{
Item = item;
Position = position;
}