eu.etaxonomy.taxeditor.store/src/main/java/eu/etaxonomy/taxeditor/util/TaxonTreeNodeContentProvider.java

   1 /**
   2 * Copyright (C) 2017 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.util;
  10
  11 import java.util.Collection;
  12 import java.util.Collections;
  13 import java.util.Comparator;
  14 import java.util.List;
  15
  16 import org.eclipse.jface.viewers.ITreeContentProvider;
  17
  18 import eu.etaxonomy.cdm.api.service.ITaxonNodeService;
  19 import eu.etaxonomy.cdm.model.taxon.TaxonNode;
  20 import eu.etaxonomy.cdm.persistence.dto.TaxonNodeDto;
  21 import eu.etaxonomy.taxeditor.preference.PreferencesUtil;
  22 import eu.etaxonomy.taxeditor.store.CdmStore;
  23
  24 /**
  25  * @author pplitzner
  26  * @date 05.09.2017
  27  */
  28 public class TaxonTreeNodeContentProvider implements ITreeContentProvider {
  29
  30     private static final Object[] NO_CHILDREN = new Object[0];
  31
  32     private ITaxonNodeService taxonNodeService;
  33
  34     @Override
  35     public Object[] getElements(Object inputElement) {
  36         if(inputElement instanceof Collection){
  37             return ((Collection<?>) inputElement).toArray();
  38         }
  39         return this.getChildren(inputElement);
  40     }
  41
  42     @Override
  43     public Object[] getChildren(Object parentElement) {
  44         if (taxonNodeService == null){
  45             taxonNodeService = CdmStore.getService(ITaxonNodeService.class);
  46         }
  47         Object[] children = null;
  48
  49 //        if(parentElement instanceof Classification){
  50 //            children = taxonNodeService.listChildNodesAsUuidAndTitleCache(((Classification)parentElement).getRootNode()).toArray();
  51 ////            children = ((Classification) parentElement).getChildNodes().toArray();
  52 //        }
  53 //        //taxon node
  54 //        if(parentElement instanceof ITaxonTreeNode){
  55 //            ITaxonTreeNode treeNode = (ITaxonTreeNode) HibernateProxyHelper.deproxy(parentElement);
  56 //            List<TaxonNode> childrenSet = treeNode.getChildNodes();
  57 //            HHH_9751_Util.removeAllNull(childrenSet);
  58 //            children = childrenSet.toArray();
  59 //        }
  60         List<TaxonNodeDto> childrenList = null;
  61
  62         if(parentElement instanceof TaxonNode){
  63                 childrenList = taxonNodeService.listChildNodesAsTaxonNodeDto((TaxonNode)parentElement);
  64         }else {
  65                 childrenList = taxonNodeService.listChildNodesAsTaxonNodeDto((TaxonNodeDto)parentElement);
  66         }
  67         Comparator<TaxonNodeDto> comparator = PreferencesUtil.getNodeComparator();
  68         Collections.sort(childrenList, comparator);
  69         children = childrenList.toArray();
  70         return children != null ? children : NO_CHILDREN;
  71     }
  72
  73     @Override
  74     public Object getParent(Object element) {
  75         if (taxonNodeService == null){
  76             taxonNodeService = CdmStore.getService(ITaxonNodeService.class);
  77         }
  78         if(element instanceof TaxonNodeDto){
  79             if (((TaxonNodeDto) element).getParentUUID() != null){
  80                 TaxonNodeDto parentDto = taxonNodeService.dto(((TaxonNodeDto) element).getParentUUID());
  81 //                TaxonNode parent = taxonNodeService.load(((TaxonNodeDto) element).getParentUUID());
  82                 if (parentDto != null){
  83 //                    return new TaxonNodeDto(parent);
  84                     return parentDto;
  85                 }
  86             }
  87         }
  88         return null;
  89     }
  90
  91     @Override
  92     public boolean hasChildren(Object element) {
  93         if(element instanceof TaxonNode){
  94             return ((TaxonNode) element).getCountChildren() > 0;
  95         }
  96         if (element instanceof TaxonNodeDto){
  97             return ((TaxonNodeDto)element).getTaxonomicChildrenCount()>0;
  98         }
  99         return this.getChildren(element).length > 0;
 100     }
 101 }