eu.etaxonomy.taxeditor.editor/src/main/java/eu/etaxonomy/taxeditor/editor/descriptiveDataSet/matrix/CellSelectionListener.java

   1 // $Id$
   2 /**
   3 * Copyright (C) 2018 EDIT
   4 * European Distributed Institute of Taxonomy
   5 * http://www.e-taxonomy.eu
   6 *
   7 * The contents of this file are subject to the Mozilla Public License Version 1.1
   8 * See LICENSE.TXT at the top of this package for the full license terms.
   9 */
  10 package eu.etaxonomy.taxeditor.editor.descriptiveDataSet.matrix;
  11
  12 import java.util.Collection;
  13
  14 import org.eclipse.e4.ui.workbench.modeling.ESelectionService;
  15 import org.eclipse.jface.viewers.StructuredSelection;
  16 import org.eclipse.nebula.widgets.nattable.data.IRowDataProvider;
  17 import org.eclipse.nebula.widgets.nattable.extension.e4.selection.E4SelectionListener;
  18 import org.eclipse.nebula.widgets.nattable.layer.cell.ILayerCell;
  19 import org.eclipse.nebula.widgets.nattable.layer.event.ILayerEvent;
  20 import org.eclipse.nebula.widgets.nattable.selection.SelectionLayer;
  21 import org.eclipse.nebula.widgets.nattable.selection.event.CellSelectionEvent;
  22 import org.eclipse.nebula.widgets.nattable.selection.event.RowSelectionEvent;
  23
  24 import eu.etaxonomy.cdm.api.service.dto.RowWrapperDTO;
  25
  26 /**
  27  * @author pplitzner
  28  * @date 09.07.2018
  29  *
  30  */
  31 final class CellSelectionListener extends E4SelectionListener<Object> {
  32
  33     private CharacterMatrixPart part;
  34
  35     public CellSelectionListener(
  36             ESelectionService service,
  37             SelectionLayer selectionLayer,
  38             IRowDataProvider<Object> rowDataProvider,
  39             CharacterMatrixPart part) {
  40         super(service, selectionLayer, rowDataProvider);
  41         this.part = part;
  42     }
  43
  44     @Override
  45     public void handleLayerEvent(ILayerEvent event) {
  46         if(event instanceof CellSelectionEvent){
  47             CellSelectionEvent cellSelectionEvent = (CellSelectionEvent)event;
  48             int columnPosition = cellSelectionEvent.getColumnPosition();
  49             if(columnPosition>=CharacterMatrix.LEADING_COLUMN_COUNT){
  50                 Collection<ILayerCell> selectedCells = cellSelectionEvent.getSelectionLayer().getSelectedCells();
  51                 if(selectedCells.size()==1){
  52                     ILayerCell cell = selectedCells.iterator().next();
  53                     Object dataValue = cell.getDataValue();
  54                     if(dataValue!=null){
  55                         part.getSelectionService().setSelection(new StructuredSelection(dataValue));
  56                         return;
  57                     }
  58                 }
  59             }
  60         }
  61         else if(event instanceof RowSelectionEvent){
  62             RowSelectionEvent rowSelectionEvent = (RowSelectionEvent) event;
  63             int[] fullySelectedRowPositions = rowSelectionEvent.getSelectionLayer().getFullySelectedRowPositions();
  64             if(fullySelectedRowPositions.length==1){
  65                 Object rowObject = part.getMatrix().getBodyDataProvider().getRowObject(fullySelectedRowPositions[0]);
  66                 if(rowObject instanceof RowWrapperDTO){
  67                     part.getSelectionService().setSelection(new StructuredSelection(((RowWrapperDTO) rowObject).getDescription()));
  68                     return;
  69                 }
  70             }
  71         }
  72         part.getSelectionService().setSelection(new StructuredSelection());
  73     }
  74 }