protected override Icon GetItem(FileInfo file)
{
if (file.Extension.Equals(".css", StringComparison.InvariantCultureIgnoreCase))
{
return(null);
}
//first, see if we've already got this sprite definition
if (_sprites.Any(x => x.Key == file))
{
return(null);
}
//see if there is an associated .CSS file for this current file
//ensures we only resolve the files once
if (_resolvedFiles == null)
{
_resolvedFiles = AllowedExtensions.SelectMany(x => RootFolder.GetFiles(x, SearchOption.AllDirectories)).ToArray();
}
var spriteDefinition = _resolvedFiles
.Where(x => x.Name.EndsWith(".css", StringComparison.InvariantCultureIgnoreCase))
.Where(x => Path.GetExtension(file.Name) != Path.GetExtension(x.Name))
.Where(x => Path.GetFileNameWithoutExtension(file.Name) == Path.GetFileNameWithoutExtension(x.Name))
.SingleOrDefault();
if (spriteDefinition != null)
{
_sprites.Add(new KeyValuePair <FileInfo, FileInfo>(file, spriteDefinition));
//since it's a Sprite, don't include it in the results
return(null);
}
return(base.GetItem(file));
}