eu.etaxonomy.taxeditor.navigation/src/main/java/eu/etaxonomy/taxeditor/navigation/navigator/TaxonNodeLabelProvider.java

   1 // $Id$
   2 /**
   3 * Copyright (C) 2007 EDIT
   4 * European Distributed Institute of Taxonomy
   5 * http://www.e-taxonomy.eu
   6 *
   7 * The contents of this file are subject to the Mozilla Public License Version 1.1
   8 * See LICENSE.TXT at the top of this package for the full license terms.
   9 */
  10
  11 package eu.etaxonomy.taxeditor.navigation.navigator;
  12
  13 import org.eclipse.jface.viewers.ColumnLabelProvider;
  14 import org.eclipse.jface.viewers.DelegatingStyledCellLabelProvider.IStyledLabelProvider;
  15 import org.eclipse.jface.viewers.ILabelProvider;
  16 import org.eclipse.jface.viewers.StyledString;
  17 import org.eclipse.jface.viewers.StyledString.Styler;
  18 import org.eclipse.swt.graphics.Image;
  19 import org.eclipse.swt.graphics.TextStyle;
  20 import org.eclipse.ui.navigator.IDescriptionProvider;
  21 import org.hibernate.LazyInitializationException;
  22
  23 import eu.etaxonomy.cdm.hibernate.HibernateProxyHelper;
  24 import eu.etaxonomy.cdm.model.common.CdmBase;
  25 import eu.etaxonomy.cdm.model.common.IIdentifiableEntity;
  26 import eu.etaxonomy.cdm.model.taxon.Taxon;
  27 import eu.etaxonomy.cdm.model.taxon.TaxonNode;
  28 import eu.etaxonomy.taxeditor.navigation.NavigationUtil;
  29 import eu.etaxonomy.taxeditor.preference.Resources;
  30 import eu.etaxonomy.taxeditor.security.RequiredPermissions;
  31 import eu.etaxonomy.taxeditor.store.CdmStore;
  32 import eu.etaxonomy.taxeditor.store.StoreUtil;
  33
  34 /**
  35  * <p>TaxonNodeLabelProvider class.</p>
  36  *
  37  * @author p.ciardelli
  38  * @created 04.06.2009
  39  * @version 1.0
  40  */
  41 public class TaxonNodeLabelProvider extends ColumnLabelProvider
  42                 implements ILabelProvider, IDescriptionProvider, IStyledLabelProvider {
  43
  44
  45         private Styler notGrantedStyler = null;
  46
  47         /** {@inheritDoc} */
  48         @Override
  49         public Image getImage(Object element) {
  50                 return null;
  51         }
  52
  53         /** {@inheritDoc} */
  54         @Override
  55         public String getText(Object element) {
  56                 if (element instanceof TaxonNode){
  57                         TaxonNode taxonNode = (TaxonNode) HibernateProxyHelper.deproxy(element);
  58
  59                         try{
  60                                 Taxon taxon = (Taxon) HibernateProxyHelper.deproxy(taxonNode.getTaxon());
  61                                 if(taxon == null){
  62                                         NavigationUtil.error(getClass(), "The taxon node does not have a taxon attached to it. Please check your import. TaxonNode: " + element, null);
  63 //                                      throw new RuntimeException("The data your are trying to view is corrupt. Please check your import.");
  64                                 }else{
  65                                         try{
  66                                                 return taxon.getName() != null ? ((IIdentifiableEntity) HibernateProxyHelper.deproxy(taxon.getName())).getTitleCache() : new String();
  67                                         }catch(Exception e){
  68                                                 NavigationUtil.error(getClass(), e);
  69                                         }
  70                                 }
  71                         }catch (LazyInitializationException e){
  72                                 NavigationUtil.error(getClass(), e);
  73                         }
  74
  75                 }
  76                 return new String();
  77         }
  78
  79         /* (non-Javadoc)
  80          * @see org.eclipse.ui.navigator.IDescriptionProvider#getDescription(java.lang.Object)
  81          */
  82         /** {@inheritDoc} */
  83         public String getDescription(Object anElement) {
  84                 if (anElement instanceof TaxonNode) {
  85                         Taxon data = ((TaxonNode) anElement).getTaxon();
  86                         return "Taxon: " + data.getTitleCache(); //$NON-NLS-1$
  87                 }
  88                 return null;
  89         }
  90
  91         /* (non-Javadoc)
  92          * @see org.eclipse.jface.viewers.DelegatingStyledCellLabelProvider.IStyledLabelProvider#getStyledText(java.lang.Object)
  93          */
  94         /** {@inheritDoc} */
  95         public StyledString getStyledText(Object element) {
  96                 // determine style base on  user grants
  97                 Styler styler = null;
  98                 if(!CdmStore.currentAuthentiationHasPermission((CdmBase)element, RequiredPermissions.TAXONNODE_EDIT)){
  99                         styler = getNotGrantedStyler();
 100                 }
 101                 return new StyledString(getText(element), styler);
 102
 103         }
 104
 105         /**
 106          * @return
 107          */
 108         private Styler getNotGrantedStyler() {
 109                 if (notGrantedStyler  == null) {
 110                         notGrantedStyler = new Styler() {
 111                                 @Override
 112                                 public void applyStyles(TextStyle textStyle) {
 113                                         textStyle.underline = false;
 114                                         textStyle.foreground = StoreUtil.getColor(Resources.COLOR_TEXT_DISABLED);
 115                                 }
 116                         };
 117                 }
 118                 return notGrantedStyler;
 119         }
 120 }