How to update UserIndicator?

Support
1

Hello!
I have an edit screen, where the currently logged-in user can change some of his data, e.g. forename, lastname, etc.
On onPostCommit() I try to update the UserIndicator in the mainscreen with:

public UserIndicator userIndicator;
…
public void onPostCommit(final DataContext.PostCommitEvent event) {
…
userIndicator.refreshUser();
…

Now I have this.userIndicator is Null. Yes, I can understand that, but what is the initialization here?
Thanks in advance,

ciao
HP

3

Hi,

UserIndicator is located in the MainScreen and can be accessed in it. So the task is to notify MainScreen that a user has changed. One of the options if to create ApplicationEvent that is fired from UserEdit and handled in the MainScreen, e.g.:

public class UserUpdatedEvent extends ApplicationEvent {

    public UserUpdatedEvent(String username) {
        super(username);
    }

    @Override
    public String getSource() {
        return (String) super.getSource();
    }
}

public class UserEdit extends StandardEditor<User> {

    ....

    @Subscribe(target = Target.DATA_CONTEXT)
    public void onPostCommit(DataContext.PostCommitEvent event) {
        ...

        getApplicationContext().getBean(UiEventPublisher.class)
                .publishEvent(new UserUpdatedEvent(getEditedEntity().getUsername()));
    }
}

Unfortunately, just call userIndicator.refreshUser() is not enough, because UserIndicator obtains user instance from currentUserSubstitution#getAuthenticatedUser which returns an old instance, thus you need to set userIndicatorFormatter:

public class MainScreen extends Screen implements Window.HasWorkArea {
    ...

    @Autowired
    private UserIndicator userIndicator;
    @Autowired
    private CurrentUserSubstitution currentUserSubstitution;
    @Autowired
    private DatabaseUserRepository databaseUserRepository;
    @Autowired
    private MetadataTools metadataTools;
    
    ...

    @Install(to = "userIndicator", subject = "formatter")
    private String userIndicatorFormatter(final UserDetails userDetails) {
        User user = databaseUserRepository.loadUserByUsername(userDetails.getUsername());
        return metadataTools.getInstanceName(user);
    }

    @EventListener
    public void onUserUpdated(UserUpdatedEvent event) {
        UserDetails authenticatedUser = currentUserSubstitution.getAuthenticatedUser();
        if (Objects.equals(authenticatedUser.getUsername(), event.getSource())) {
            userIndicator.refreshUser();
        }
    }
}

Demo project: UserIndicator-demo.zip (89.3 KB)

Gleb

3 Likes
5

Works instantly!
Thanks for the solution and thanks for all the extra time you spent on the explanation and providing demo project, too.
Br
HP

6

How is this done in JMIX 2.6 ?
(The AI assistents struggle…)
Thanks in advance,
HP