@PostConstruct
protected void init() {
list.setHeight(25, Unit.PERCENTAGE);
addComponent(
new MVerticalLayout(new MHorizontalLayout(addNew, edit, delete), list)
// .expand(list)
);
listEntities();
list.addMValueChangeListener(e -> adjustActionButtonState());
}
private void listEntities() {
// A dead simple in memory listing would be:
list.setBeans(clientRepository.findAll());
// Lazy binding with SortableLazyList: memory and query efficient
// connection from Vaadin Table to Spring Repository
// Note that fetching strategies can be given to MTable constructor as well.
// Use this approach if you expect you'll have lots of data in your
// table.
/*list.setBeans(new SortableLazyList<>(
// entity fetching strategy
(firstRow, asc, sortProperty) -> clientRepository.findAllBy(
new PageRequest(
firstRow / PAGE_SIZE,
PAGE_SIZE,
asc ? Sort.Direction.ASC : Sort.Direction.DESC,
// fall back to id as "natural order"
sortProperty == null ? "id" : sortProperty
)
),
// count fetching strategy
() -> (int) clientRepository.count(),
PAGE_SIZE
));*/
adjustActionButtonState();
}
@PostConstruct
public void init() {
/*
* Add value change listener to table that opens the selected Payee into
* an editor.
*/
payeeTable.addMValueChangeListener(
new MValueChangeListener<Payee>() {
@Override
public void valueChange(MValueChangeEvent<Payee> event) {
editPayee(event.getValue());
}
});
/*
* Configure the filter input and hook to text change events to
* repopulate the table based on given filter. Text change
* events are sent to the server when e.g. user holds a tiny pause
* while typing or hits enter.
*
filter.setInputPrompt("Filter Payees...");
filter.addTextChangeListener(new FieldEvents.TextChangeListener() {
@Override
public void textChange(FieldEvents.TextChangeEvent textChangeEvent) {
listPayees(textChangeEvent.getText());
}
});
*/
/* "Responsive Web Design" can be done with plain Java as well. Here we
* e.g. do selective layouting and configure visible columns in
* table based on available width */
layout();
adjustTableColumns();
/* If you wish the UI to adapt on window resize/page orientation
* change, hook to BrowserWindowResizeEvent */
UI.getCurrent().setResizeLazy(true);
Page.getCurrent()
.addBrowserWindowResizeListener(
new Page.BrowserWindowResizeListener() {
@Override
public void browserWindowResized(
Page.BrowserWindowResizeEvent browserWindowResizeEvent) {
adjustTableColumns();
layout();
}
});
listPayees();
}
// Controller methods.
//
// In a big project, consider using separate controller/presenter
// for improved testability. MVP is a popular pattern for large
// Vaadin applications.
private void listPayees() {
// filtered by authorized user from Bluemix SSO
try {
Subject s = WSSubject.getCallerSubject();
if (s != null) {
Set<Principal> principals = s.getPrincipals();
if (principals != null && principals.size() > 0) {
authname = principals.iterator().next().getName();
}
}
} catch (Exception exc) {
authname = "bad stuff";
}
tservice.updateTransactions(authname);
payeeTable.setBeans(new ArrayList<>(service.findByName(authname)));
}
public void edit(ClickEvent e) {
edit(list.getValue());
}
protected void adjustActionButtonState() {
boolean hasSelection = list.getValue() != null;
edit.setEnabled(hasSelection);
delete.setEnabled(hasSelection);
}
public void remove(ClickEvent e) {
clientRepository.delete(list.getValue());
list.setValue(null);
listEntities();
}
private void listPayees(String filterString) {
payeeTable.setBeans(new ArrayList<>(service.findByName(filterString)));
}
/**
* Similarly to layouts, we can adapt component configurations based on the client details. Here
* we configure visible columns so that a sane amount of data is displayed for various devices.
*/
private void adjustTableColumns() {
payeeTable.setVisibleColumns("name", "account");
payeeTable.setColumnHeaders("Name", "Account");
}
