setPadding(centerPanel);
mainContent.add(headerPanel);
mainContent.add(breadcrumbPanel);
mainContent.add(centerPanel);
add(mainContent);
bus.addHandler(SaveFicheStEvent.TYPE, new SaveFicheStHandler() {
@Override
public void onSave(final SaveFicheStEvent event) {
if (!centerPanel.isValid()) {
return;
}