eu.etaxonomy.taxeditor.editor/src/main/java/eu/etaxonomy/taxeditor/editor/key/polytomous/PolytomousKeyPropertyTester.java

   1 /**
   2 * Copyright (C) 2016 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.key.polytomous;
  10
  11 import org.eclipse.core.expressions.PropertyTester;
  12 import org.eclipse.jface.viewers.IStructuredSelection;
  13
  14 import eu.etaxonomy.cdm.model.description.PolytomousKeyNode;
  15
  16 /**
  17  * @author k.luther
  18  * @date 23.11.2016
  19  *
  20  */
  21 public class PolytomousKeyPropertyTester extends PropertyTester {
  22     private static final String KEYNODE = "isKeyNode";
  23
  24     /**
  25      * {@inheritDoc}
  26      */
  27     @Override
  28     public boolean test(Object receiver, String property, Object[] args, Object expectedValue) {
  29         if(receiver instanceof IStructuredSelection){
  30
  31             IStructuredSelection selection = (IStructuredSelection) receiver;
  32
  33             Object selectedElement = selection.getFirstElement();
  34             if(KEYNODE.equals(property)){
  35                 return isKeyNode(selectedElement);
  36             }
  37         }
  38         return false;
  39     }
  40
  41     private boolean isKeyNode(Object selectedElement) {
  42         return (selectedElement instanceof PolytomousKeyNode) ? true : false;
  43     }
  44
  45
  46 }