Examples of org.openide.explorer.ExplorerManager.addPropertyChangeListener()

                }
                prblms.add( new Problem( NbBundle.getMessage( NodeJSProject.class, "PROBLEM_NO_MAIN_FILE" ), Severity.FATAL ) ); //NOI18N
            }
        }
        X x = new X();
        mgr.addPropertyChangeListener( x );
        grp.addItem( x, true );
        DialogBuilder b = new DialogBuilder( NodeJSProject.class ).setModal( true ).setContent( ep ).setValidationGroup( grp ).setTitle( NbBundle.getMessage( NodeJSProject.class, "CHOOSE_NO_MAIN_FILE" ) ).setDialogType( DialogType.QUESTION );
        if (b.showDialog( NotifyDescriptor.OK_OPTION ) && mgr.getSelectedNodes().length == 1) {
            Node n = mgr.getSelectedNodes()[0];
            FileObject fo = n.getLookup().lookup( DataObject.class ).getPrimaryFile();

        setBottomComponent(new NoContentPanel(NbBundle.getMessage(DiffResultsView.class, "MSG_DiffPanel_NoRevisions"))); // NOI18N
    }


    public void ancestorAdded(AncestorEvent event) {
        ExplorerManager em = ExplorerManager.find(treeView);
        em.addPropertyChangeListener(this);
        if (!dividerSet) {
            SwingUtilities.invokeLater(new Runnable() {


                public void run() {
                    dividerSet = true;

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