eu.etaxonomy.taxeditor.editor/src/main/java/eu/etaxonomy/taxeditor/editor/workingSet/CharacterDropAdapter.java

   1 /**
   2 * Copyright (C) 2009 EDIT
   3 * European Distributed Institute of Taxonomy
   4 * http://www.e-taxonomy.eu
   5 *
   6 * The contents of this file are subject to the Mozilla Public License Version 1.1
   7 * See LICENSE.TXT at the top of this package for the full license terms.
   8 */
   9 package eu.etaxonomy.taxeditor.editor.workingSet;
  10
  11 import org.eclipse.jface.viewers.Viewer;
  12 import org.eclipse.jface.viewers.ViewerDropAdapter;
  13 import org.eclipse.swt.dnd.TransferData;
  14
  15 import eu.etaxonomy.cdm.model.description.Character;
  16 import eu.etaxonomy.cdm.model.description.FeatureNode;
  17 import eu.etaxonomy.cdm.model.description.FeatureTree;
  18 import eu.etaxonomy.taxeditor.featuretree.FeatureNodeTransfer;
  19
  20 /**
  21  *
  22  * @author pplitzner
  23  * @date Jun 1, 2017
  24  *
  25  */
  26 public class CharacterDropAdapter extends ViewerDropAdapter {
  27
  28         protected CharacterDropAdapter(Viewer viewer) {
  29             super(viewer);
  30         }
  31
  32         @Override
  33         public boolean performDrop(Object data) {
  34
  35             FeatureNode target = (FeatureNode) getCurrentTarget();
  36                 int currentLocation = getCurrentLocation();
  37                 Object[] characterData = (Object[]) data;
  38
  39                 //create new Character
  40                 if(characterData.length==2){
  41                     FeatureNode structureNode = (FeatureNode) characterData[0];
  42                     FeatureNode propertyNode = (FeatureNode) characterData[1];
  43                     String label = structureNode.getFeature().toString()+" "+propertyNode.getFeature().toString();
  44                     Character character = Character.NewInstance(structureNode, propertyNode, null, label, label);
  45                     FeatureNode characterNode = FeatureNode.NewInstance(character);
  46
  47                     if(getViewer().getInput()==null){
  48                         //create new feature tree
  49                         FeatureTree featureTree = FeatureTree.NewInstance();
  50                         getViewer().setInput(featureTree);
  51                     }
  52             if(target==null){
  53                 FeatureNode root = ((FeatureTree)getViewer().getInput()).getRoot();
  54                 root.addChild(characterNode);
  55             }
  56             else{
  57                 target.addChild(characterNode);
  58             }
  59                 }
  60                 getViewer().refresh();
  61                 return true;
  62         }
  63
  64         @Override
  65         public boolean validateDrop(Object target, int operation,
  66                         TransferData transferType) {
  67                 boolean transferDataIsSupported = FeatureNodeTransfer.getInstance().isSupportedType(transferType);
  68                 return transferDataIsSupported;
  69         }
  70
  71 }