eu.etaxonomy.taxeditor.editor/src/main/java/eu/etaxonomy/taxeditor/editor/view/media/MediaContentProvider.java

   1 /**
   2 * Copyright (C) 2007 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
  10 package eu.etaxonomy.taxeditor.editor.view.media;
  11
  12 import java.util.Collections;
  13 import java.util.HashSet;
  14 import java.util.List;
  15 import java.util.Set;
  16
  17 import org.eclipse.core.runtime.Assert;
  18 import org.eclipse.jface.viewers.ITreeContentProvider;
  19 import org.eclipse.jface.viewers.Viewer;
  20
  21 import eu.etaxonomy.cdm.api.facade.DerivedUnitFacade;
  22 import eu.etaxonomy.cdm.api.facade.DerivedUnitFacadeNotSupportedException;
  23 import eu.etaxonomy.cdm.hibernate.HibernateProxyHelper;
  24 import eu.etaxonomy.cdm.model.description.DescriptionBase;
  25 import eu.etaxonomy.cdm.model.description.DescriptionElementBase;
  26 import eu.etaxonomy.cdm.model.description.SpecimenDescription;
  27 import eu.etaxonomy.cdm.model.media.Media;
  28 import eu.etaxonomy.cdm.model.occurrence.DerivedUnit;
  29 import eu.etaxonomy.cdm.model.occurrence.FieldUnit;
  30 import eu.etaxonomy.cdm.model.occurrence.SpecimenOrObservationType;
  31 import eu.etaxonomy.cdm.model.taxon.Taxon;
  32 import eu.etaxonomy.taxeditor.bulkeditor.BulkEditor;
  33 import eu.etaxonomy.taxeditor.editor.TaxonEditorInput;
  34 import eu.etaxonomy.taxeditor.model.MessagingUtils;
  35
  36 /**
  37  * <p>MediaContentProvider class.</p>
  38  *
  39  * @author n.hoffmann
  40  * @created Jun 15, 2010
  41  * @version 1.0
  42  */
  43 public class MediaContentProvider implements ITreeContentProvider{
  44
  45         private static final Object[] NO_CHILDREN = new Object[0];
  46
  47         /** {@inheritDoc} */
  48         @Override
  49     public Object[] getChildren(Object parentElement) {
  50
  51                 if (parentElement instanceof TaxonEditorInput || parentElement instanceof Taxon) {
  52
  53                         Taxon taxon = null;
  54                         if (parentElement instanceof TaxonEditorInput){
  55                                 taxon = ((TaxonEditorInput) parentElement).getTaxon();
  56                         } else{
  57                                 taxon = HibernateProxyHelper.deproxy(parentElement, Taxon.class);
  58                         }
  59
  60                         if(taxon == null){
  61                                 MessagingUtils.error(getClass(), "Taxon is null", null); //$NON-NLS-1$
  62                                 return NO_CHILDREN;
  63                         }
  64                         HashSet<DescriptionBase> imageGalleries = new HashSet<DescriptionBase>();
  65                         for(DescriptionBase description : taxon.getDescriptions()){
  66                                 if(description.isImageGallery()){
  67                                         imageGalleries.add(description);
  68                                 }
  69                         }
  70                         return imageGalleries.toArray();
  71                 }
  72                 else if (parentElement instanceof DescriptionBase) {
  73                         if (((DescriptionBase) parentElement).isImageGallery()) {
  74                                 List<Media> images =  getImages((DescriptionBase) parentElement);
  75                                 if (images != null){
  76                                         return images.toArray();
  77                                 }
  78                                 return null;
  79
  80                         }
  81                 }
  82                 else if (parentElement instanceof DerivedUnit){
  83                         try {
  84                                 DerivedUnitFacade facade = DerivedUnitFacade.NewInstance((DerivedUnit) parentElement);
  85
  86                                 SpecimenDescription derivedUnitImageGallery = facade.getDerivedUnitImageGallery(false);
  87
  88                                 if(derivedUnitImageGallery != null){
  89                                         return Collections.singleton(derivedUnitImageGallery).toArray();
  90                                 }
  91
  92                         } catch (DerivedUnitFacadeNotSupportedException e) {
  93                                 MessagingUtils.error(this.getClass(), "DerivedUnitFacadeNotSupportedException when trying to instantiate DerivedUnitFacade", e); //$NON-NLS-1$
  94                         }
  95                 }
  96                 else if (parentElement instanceof FieldUnit){
  97                         DerivedUnitFacade facade = DerivedUnitFacade.NewInstance(SpecimenOrObservationType.FieldUnit, (FieldUnit) parentElement);
  98
  99                         SpecimenDescription fieldObjectImageGallery = facade.getFieldObjectImageGallery(false);
 100
 101                         if(fieldObjectImageGallery != null){
 102                             return Collections.singleton(fieldObjectImageGallery).toArray();
 103                         }
 104                 }
 105                 return NO_CHILDREN;
 106         }
 107
 108         /** {@inheritDoc} */
 109         @Override
 110     public Object getParent(Object element) {
 111                 // TODO Auto-generated method stub
 112                 return null;
 113         }
 114
 115         /** {@inheritDoc} */
 116         @Override
 117     public boolean hasChildren(Object element) {
 118                 if (getChildren(element)== null) {
 119                         return false;
 120                 }
 121                 return (getChildren(element).length > 0);
 122         }
 123
 124         /** {@inheritDoc} */
 125         @Override
 126     public Object[] getElements(Object inputElement) {
 127                 return getChildren(inputElement);
 128         }
 129
 130         /**
 131          * <p>dispose</p>
 132          */
 133         @Override
 134     public void dispose() {}
 135
 136         /** {@inheritDoc} */
 137         @Override
 138     public void inputChanged(Viewer viewer, Object oldInput, Object newInput) {}
 139
 140         private List<Media> getImages(DescriptionBase description){
 141                 Assert.isTrue(description.isImageGallery(), "Description should have the imageGallery flag set."); //$NON-NLS-1$
 142
 143                 Set<DescriptionElementBase> elements = description.getElements();
 144                 if (elements != null) {
 145                         // by definition, image galleries have only one description element
 146                         if(elements.size() > 1){
 147                                 MessagingUtils.error(this.getClass(), "There should be one and only one description element to hold the images. Found: " + elements.size() + " InDescription ID: " + description.getUuid(), null); //$NON-NLS-1$ //$NON-NLS-2$
 148                         }
 149                         if (!elements.isEmpty()){
 150                                 DescriptionElementBase element = elements.iterator().next();
 151                                 return element.getMedia();
 152                         }
 153
 154
 155                 }
 156                 return null;
 157         }
 158
 159         private SpecimenDescription createDerivedUnitFacadeImageGallery(DerivedUnitFacade facade){
 160                 SpecimenDescription description = SpecimenDescription.NewInstance();
 161                 description.setImageGallery(true);
 162
 163
 164
 165                 return description;
 166         }
 167 }