private static void AddFiles(IEnumerable<string> source, List<string> target, MainForm frm)
{
foreach (string filename in source) {
FileAttributes attr = File.GetAttributes(filename);
if ((attr & FileAttributes.Directory) == FileAttributes.Directory) {
string[] files2 = Directory.GetFiles(filename);
AddFiles(files2, target, frm);
} else {
string extension = Path.GetExtension(filename);
extension = extension != null && extension.StartsWith(".") ? extension.Substring(1) : extension;
if (frm._engine.InputFormats.Contains(extension)) {
target.Add(filename);
}
}
}
}
public bool Handle(IDataObject data, MainForm frm)
{
object obj = data.GetData(Format);
string[] files = obj as string[];
bool handled;
if (files != null) {
List<string> target = new List<string>();
AddFiles(files, target, frm);
frm.AddFiles(target);
handled = true;
} else {
handled = false;
}
return handled;
}
