/** 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 String buildRelativeHistoryToken(int level) {
List<PlaceRequest> placeHierarchyCopy = truncatePlaceHierarchy(level);
if (placeHierarchyCopy.size() == 0) {
return "";
}
return tokenFormatter.toHistoryToken(placeHierarchyCopy);
}
@Override
public void updateHistory(PlaceRequest request, boolean updateBrowserUrl) {
try {
// Make sure the request match
assert request.hasSameNameToken(getCurrentPlaceRequest())
: "Internal error, PlaceRequest passed to updateHistory doesn't match the tail of the place hierarchy.";
placeHierarchy.set(placeHierarchy.size() - 1, request);
if (updateBrowserUrl) {
String historyToken = tokenFormatter.toHistoryToken(placeHierarchy);
String browserHistoryToken = getBrowserHistoryToken();
if (browserHistoryToken == null || !browserHistoryToken.equals(historyToken)) {
setBrowserHistoryToken(historyToken, false);
}
saveHistoryToken(historyToken);
}
} catch (TokenFormatException e) {
// Do nothing.
}
}
@Override
public void execute() {
String initialToken = History.getToken();
if (!initialToken.isEmpty() && !isBlackListed(initialToken)) {
List<PlaceRequest> hierarchy = formatter.toPlaceRequestHierarchy(initialToken);
final PlaceRequest placeRequest = hierarchy.get(hierarchy.size() - 1);
Scheduler.get()
.scheduleDeferred(
new Scheduler.ScheduledCommand() {
@Override
public void execute() {
placeManager.revealPlace(placeRequest, true);
}
});
bootstrapContext.setInitialPlace(placeRequest.getNameToken());
} else {
placeManager.revealDefaultPlace();
}
}
@Override
public String buildHistoryToken(PlaceRequest request) {
return tokenFormatter.toPlaceToken(request);
}
@Override
public String buildRelativeHistoryToken(PlaceRequest request, int level) {
List<PlaceRequest> placeHierarchyCopy = truncatePlaceHierarchy(level);
placeHierarchyCopy.add(request);
return tokenFormatter.toHistoryToken(placeHierarchyCopy);
}