/** Listener to handle button actions */
public void actionPerformed(ActionEvent e) {
// Check if the user changed the service filter option
if (e.getSource() == service_box) {
service_list.setEnabled(service_box.isSelected());
service_list.clearSelection();
remove_service_button.setEnabled(false);
add_service_field.setEnabled(service_box.isSelected());
add_service_field.setText("");
add_service_button.setEnabled(false);
}
// Check if the user pressed the add service button
if ((e.getSource() == add_service_button) || (e.getSource() == add_service_field)) {
String text = add_service_field.getText();
if ((text != null) && (text.length() > 0)) {
service_data.addElement(text);
service_list.setListData(service_data);
}
add_service_field.setText("");
add_service_field.requestFocus();
}
// Check if the user pressed the remove service button
if (e.getSource() == remove_service_button) {
Object[] sels = service_list.getSelectedValues();
for (int i = 0; i < sels.length; i++) {
service_data.removeElement(sels[i]);
}
service_list.setListData(service_data);
service_list.clearSelection();
}
}
/** Un-registers the given ErrorEventListener from being a listener to this GUI. */
public void removeErrorListener(ErrorEventListener listener) {
errorEventListeners.removeElement(listener);
}
/** Un-registers the given ComputerPartEventListener from being a listener to this GUI. */
public void removeListener(ComputerPartEventListener listener) {
listeners.removeElement(listener);
}