Composite composite = new Composite( parent, SWT.NONE );
GridLayout gl = new GridLayout( 1, false );
composite.setLayout( gl );
composite.setLayoutData( new GridData( GridData.FILL_BOTH ) );
modWidget = new ModWidget( wizard.getConnection() != null ? wizard.getConnection().getSchema()
: Schema.DEFAULT_SCHEMA );
modWidget.createContents( composite );
modWidget.addWidgetModifyListener( this );
validate();