drools-eclipse/org.kie.eclipse.navigator/src/main/java/org/kie/eclipse/navigator/view/KieNavigatorView.java
void toggleDefaultPage() {
		if (treeViewer.getTree().getItemCount() < 1) {
			book.showPage(noServersPage);
		} else {
			book.showPage(mainPage);
		}
	}
void toggleDefaultPage() {
		if (treeViewer.getTree().getItemCount() < 1) {
			book.showPage(noServersPage);
		} else {
			book.showPage(mainPage);
		}
	}
Switch between the servers and default/empty page.