/**
* Save the current field file.
*
* @require fieldView.Field != null
*/
private void Save(string filename) {
Field field;
string extension, fn;
fn = filename.ToLower();
extension = Path.GetExtension(fn);
if ((extension == ".fld" && fieldView.Field is FldField)
|| (extension == ".gat" && fieldView.Field is GatField)
|| (fn.EndsWith(".fld.gz") && fieldView.Field is GZipFldField)) {
field = fieldView.Field;
} else if (fn.EndsWith(".fld")) {
field = new FldField(fieldView.Field);
} else {
field = new GZipFldField(fieldView.Field);
}
try {
field.Save(filename);
fieldView.Field = field;
this.filename = filename;
Update();
} catch (IOException e) {
ShowError("Cannot save file:\n" + e.Message);
} catch (SaveNotSupportedException e) {
ShowError(e.Message);
}
}