/** Handles change events from {@link History}. */
@Override
public void onValueChange(final ValueChangeEvent<String> event) {
if (locked) {
defferedNavigation =
new Command() {
@Override
public void execute() {
onValueChange(event);
}
};
return;
}
if (!getLock()) {
return;
}
String historyToken = event.getValue();
try {
if (historyToken.trim().equals("")) {
unlock();
revealDefaultPlace();
} else {
historyToken = modifyNameToken(historyToken);
placeHierarchy = tokenFormatter.toPlaceRequestHierarchy(historyToken);
setPreviousRequestUrl(getCurrentPlaceRequest());
doRevealPlace(getCurrentPlaceRequest(), true);
}
} catch (TokenFormatException e) {
unlock();
error(historyToken);
NavigationEvent.fire(this, null);
}
}
@Override
public void onReveal() {
super.onReveal();
getView().setNavigationPlace(null);
unregisterNavigationHandler(); // Be on the safe side
handlerRegistration = addHandler(NavigationEvent.getType(), this);
}
@Override
public void onNavigation(NavigationEvent navigationEvent) {
analytics.trackPageview(navigationEvent.getRequest().getNameToken());
}
@Override
public void onNavigation(NavigationEvent navigationEvent) {
getView().setNavigationPlace(navigationEvent.getRequest().getNameToken());
}