Comment 2 for bug 768440

Well if we can more or less controll the read (by the converter), we have problems with the write. The save must be performed at the last place, becouse we need to let the form be aware of changes, that were made.
The proposition is to make the DataManager form aware (IFormAware). I think that it must not be aware of the widget, becouse its the Converter job to provide understandable data, but we must definetly have more space to manipulate the read/write operations