EDIT

import eu.etaxonomy.taxeditor.editor.descriptiveDataSet.matrix.CharacterMatrixPart;

import eu.etaxonomy.taxeditor.editor.internal.TaxeditorEditorPlugin;

import eu.etaxonomy.taxeditor.model.MessagingUtils;

import eu.etaxonomy.taxeditor.store.CdmStore;

import eu.etaxonomy.taxeditor.store.StoreUtil;

import eu.etaxonomy.taxeditor.ui.dialog.configurator.StructuredAggregationConfigurationWizard;

        IStructuredSelection sel = matrix.getSelection();

//        Object o = sel.getFirstElement();

        List<TaxonNodeDto> nodeDtos = new ArrayList<>();

        while (iterator.hasNext()){

            Object o = iterator.next();

            if (o instanceof TaxonNodeDto){

        config.setAggregateToHigherRanks(true);

        config.setAggregationMode(AggregationMode.byAreasAndRanks());

        config.setAdaptBatchSize(false);

        StructuredAggregationConfigurationWizard aggregationWizard = new StructuredAggregationConfigurationWizard(config, matrix.getDescriptiveDataSet(), nodeDtos);

        WizardDialog dialog = new WizardDialog(StoreUtil.getShell(),

                                monitorUuid,

                                50,

                                null,

                                subMonitor);

                Object resultObject = remotingMonitor.getResult();

                if(resultObject instanceof Exception){

        this.selectedNodes = nodes;

    }

    @Override

    public void postOperation(IRemotingProgressMonitor monitor) {

        // TODO Auto-generated method stub

    }

    @Override

        configurator.setAggregationMode(page.getAggregationMode());

        configurator.setToParentSourceMode(page.getSourceModeChildParent());

//        for (TaxonNode taxonNode : matrix.getDescriptiveDataSet().getTaxonSubtreeFilter()) {

//            filter = filter.orSubtree(taxonNode);

//        }

            configurator.setTaxonNodeFilter(filter);

        }

        return true;

    }

    public void addPages() {

        page = new StructuredDescriptionAggregationConfigurationWizardPage(configurator, selectedNodes);

        addPage(page);

    }

    protected CheckboxTableViewer subTreeSelectionViewer;

    private List<TaxonNodeDto> selectedNodes;

    protected StructuredDescriptionAggregationConfigurationWizardPage(StructuredDescriptionAggregationConfiguration configurator, List<TaxonNodeDto> nodes) {

        super(Messages.DistributionAggregationWizardPage_TITLE);

        this.configurator = configurator;

        selectedNodes = nodes;

    }

    @Override

    public void createControl(Composite parent) {

        final Composite control = new Composite(parent, SWT.NULL);

        });

        if (selectedNodes == null || selectedNodes.isEmpty()){

            List<TaxonNode> nodeList;

            List<UUID> uuidList = new ArrayList<>();

           }

        });

        GridLayoutFactory.fillDefaults();

        Label higherRankLabel = new Label(control, SWT.NULL);