final ChangeHandler ruleSelectionCL = new ChangeHandler() {
public void onChange( ChangeEvent event ) {
ruleNameTextBox.setText( availableRulesBox.getItemText( availableRulesBox.getSelectedIndex() ) );
}
};
availableRulesHandlerRegistration = availableRulesBox.addChangeHandler( ruleSelectionCL );
availableRulesBox.setSelectedIndex( 0 );
horizontalPanel.add( availableRulesBox );
horizontalPanel.remove( busy );
horizontalPanel.remove( loading );