Hello. I want to create new node of BeanTreeView, and when I add some node in constructor, then run the app, and then I try to view the window with tree, it throws this error
java.lang.AssertionError: Component cannot be created for {component=null, displayName=Exploirer, instanceCreate=AlwaysEnabledAction[Exploirer]}
at org.openide.windows.OpenComponentAction.getTopComponent(OpenComponentAction.java:71)
Why? And how to add node there? See the code.
private ProjectsChildren projectsChildren;
private ProjectNode projectNode = new ProjectNode(new MainProject("ggg"), projectsChildren);
public ExploirerTopComponent() {
initComponents();
setName(NbBundle.getMessage(ExploirerTopComponent.class, "CTL_ExploirerTopComponent"));
setToolTipText(NbBundle.getMessage(ExploirerTopComponent.class, "HINT_ExploirerTopComponent"));
// setIcon(ImageUtilities.loadImage(ICON_PATH, true));
//map.put("delete", ExplorerUtils.actionDelete(mgr, true));
associateLookup (ExplorerUtils.createLookup(mgr, getActionMap()));
//projectsChildren.createProject("demence");
/* somewhere here is the problem*/
mgr.setRootContext(projectNode);
ProjectNode[] pr = null;
pr[0] = projectNode;
mgr.getRootContext().getChildren().add(pr);
}
