taxeditor-editor/src/main/java/eu/etaxonomy/taxeditor/editor/descriptiontree/DescriptionContentProvider.java

   1 /**
   2  *
   3  */
   4 package eu.etaxonomy.taxeditor.editor.descriptiontree;
   5
   6 import org.apache.log4j.Logger;
   7 import org.eclipse.jface.viewers.ITreeContentProvider;
   8 import org.eclipse.jface.viewers.Viewer;
   9
  10 import eu.etaxonomy.cdm.api.utility.ImagesUtility;
  11 import eu.etaxonomy.cdm.model.description.DescriptionElementBase;
  12 import eu.etaxonomy.cdm.model.description.Feature;
  13 import eu.etaxonomy.cdm.model.description.TaxonDescription;
  14 import eu.etaxonomy.cdm.model.taxon.Taxon;
  15 import eu.etaxonomy.taxeditor.editor.TaxonEditorInput;
  16
  17 /**
  18  * @author p.ciardelli
  19  *
  20  */
  21 public class DescriptionContentProvider implements ITreeContentProvider {
  22         private static final Logger logger = Logger
  23                         .getLogger(DescriptionContentProvider.class);
  24
  25         private static final Object[] NO_CHILDREN = new Object[0];
  26
  27         private IDescriptiveInformationProvider infoProvider;
  28
  29         public DescriptionContentProvider(IDescriptiveInformationProvider infoProvider) {
  30                 this.infoProvider = infoProvider;
  31         }
  32
  33         /* (non-Javadoc)
  34          * @see org.eclipse.jface.viewers.ITreeContentProvider#getChildren(java.lang.Object)
  35          */
  36         public Object[] getChildren(Object parentElement) {
  37                 if (parentElement instanceof TaxonEditorInput) {
  38                         Taxon taxon = ((TaxonEditorInput) parentElement).getTaxon();
  39                         return taxon.getDescriptions().toArray();
  40                 }
  41                 if (parentElement instanceof TaxonDescription) {
  42                         if (((TaxonDescription) parentElement).isImageGallery()) {
  43                                 return infoProvider.getDescriptionElements((TaxonDescription) parentElement, Feature.IMAGE()).toArray();
  44                         } else {
  45                                 return infoProvider.getDescriptionFeatures((TaxonDescription) parentElement).toArray();
  46                         }
  47                 }
  48                 if (parentElement instanceof TaxonDescriptionFeature){
  49                         TaxonDescriptionFeature taxonDescriptionFeature = (TaxonDescriptionFeature) parentElement;
  50                         Feature feature = taxonDescriptionFeature.getFeature();
  51                         TaxonDescription description = taxonDescriptionFeature.getDescription();
  52                         return infoProvider.getDescriptionElements(description, feature).toArray();
  53                 }
  54                 if (parentElement instanceof DescriptionElementBase) {
  55                         DescriptionElementBase descriptionElement = (DescriptionElementBase) parentElement;
  56                         if (descriptionElement.getInDescription().isImageGallery()) {
  57                                 return ImagesUtility.getOrderedImages(descriptionElement).toArray();
  58                         }
  59                 }
  60                 return NO_CHILDREN;
  61         }
  62
  63         /* (non-Javadoc)
  64          * @see org.eclipse.jface.viewers.ITreeContentProvider#getParent(java.lang.Object)
  65          */
  66         public Object getParent(Object element) {
  67                 return null;
  68         }
  69
  70         /* (non-Javadoc)
  71          * @see org.eclipse.jface.viewers.ITreeContentProvider#hasChildren(java.lang.Object)
  72          */
  73         public boolean hasChildren(Object element) {
  74                 return (getChildren(element).length > 0);
  75         }
  76
  77         /* (non-Javadoc)
  78          * @see org.eclipse.jface.viewers.IStructuredContentProvider#getElements(java.lang.Object)
  79          */
  80         public Object[] getElements(Object inputElement) {
  81                 return getChildren(inputElement);
  82         }
  83
  84         /* (non-Javadoc)
  85          * @see org.eclipse.jface.viewers.IContentProvider#dispose()
  86          */
  87         public void dispose() {}
  88
  89         /* (non-Javadoc)
  90          * @see org.eclipse.jface.viewers.IContentProvider#inputChanged(org.eclipse.jface.viewers.Viewer, java.lang.Object, java.lang.Object)
  91          */
  92         public void inputChanged(Viewer viewer, Object oldInput, Object newInput) {}
  93 }