@Override
public void start(
AcceptsOneWidget containerWidget, com.google.gwt.event.shared.EventBus eventBus) {
containerWidget.setWidget(navigationView.asWidget());
registrations.add(
navigationView
.getSelectionModel()
.addSelectionChangeHandler(
new SelectionChangeEvent.Handler() {
@Override
public void onSelectionChange(SelectionChangeEvent event) {
TreePlace place = navigationView.getSelectionModel().getSelectedObject();
if (place != null) {
goTo(place);
}
}
}));
registrations.add(
eventBus.addHandler(
DataEvent.getType(),
new DataEventHandler() {
@Override
public void onDataChanged(DataEvent event) {
if (event.refreshTree()) {
refreshTree();
if (pendingPlace != null) {
selectPlace(pendingPlace);
}
}
}
}));
}
private void selectPlace(TreePlace place) {
TreeNode node = navigationView.getMenuTree().getRootTreeNode();
if (openNode(node, place)) {
navigationView.getSelectionModel().setSelected(place, true);
pendingPlace = null;
} else {
navigationView.getSelectionModel().clear();
}
}
public void onPlaceChanged(TreePlace place) {
TreePlace selected = navigationView.getSelectionModel().getSelectedObject();
if (!place.equals(selected)) {
pendingPlace = place;
selectPlace(place);
}
}
private void refreshTree() {
TreeNode node = navigationView.getMenuTree().getRootTreeNode();
refreshTree(node);
}