public Object execute(final ExecutionEvent event) throws ExecutionException {
// assumes there is only one application node
final IApplicationNode applicationNode = ApplicationNodeManager.getApplicationNode();
final List<ISubApplicationNode> children = applicationNode.getChildren();
final INavigationNode<?>[] nodes = children.toArray(new ISubApplicationNode[children.size()]);
final INavigationNode<?> nextNode =
toNext ? findNextNode(nodes) : findPreviousNode(nodes, true);
if (nextNode != null) {
nextNode.activate();
}
return null;
}
private IStatuslineUIProcessRidget getStatuslineUIProcessRidget() {
final IApplicationNode appNode = ApplicationNodeManager.getApplicationNode();
if (appNode != null) {
final INavigationNodeController navigationNodeController =
appNode.getNavigationNodeController();
if (navigationNodeController != null
&& navigationNodeController instanceof ApplicationController) {
return ((ApplicationController) navigationNodeController)
.getStatusline()
.getStatuslineUIProcessRidget();
} else {
LOGGER.log(
LogService.LOG_ERROR, "Unexpected: navigation node controller == null"); // $NON-NLS-1$
}
} else {
LOGGER.log(LogService.LOG_ERROR, "Unexpected: appNode == null"); // $NON-NLS-1$
}
return null;
}