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.model.MessagingUtils;
  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  */
  40 public class TaxonNodeLabelProvider extends ColumnLabelProvider
  41                 implements ILabelProvider, IDescriptionProvider, IStyledLabelProvider {
  42
  43
  44         private Styler notGrantedStyler = null;
  45
  46         /** {@inheritDoc} */
  47         @Override
  48         public Image getImage(Object element) {
  49                 return null;
  50         }
  51
  52         /** {@inheritDoc} */
  53         @Override
  54         public String getText(Object element) {
  55                 if (element instanceof TaxonNode){
  56                         TaxonNode taxonNode = (TaxonNode) HibernateProxyHelper.deproxy(element);
  57
  58                         try{
  59                                 Taxon taxon = (Taxon) HibernateProxyHelper.deproxy(taxonNode.getTaxon());
  60                                 if(taxon == null){
  61                                         MessagingUtils.error(getClass(), "The taxon node does not have a taxon attached to it. Please check your import. TaxonNode: " + element, null);
  62 //                                      throw new RuntimeException("The data your are trying to view is corrupt. Please check your import.");
  63                                 }else{
  64                                         try{
  65                                                 return taxon.getName() != null ? ((IIdentifiableEntity) HibernateProxyHelper.deproxy(taxon.getName())).getTitleCache() : new String();
  66                                         }catch(Exception e){
  67                                                 MessagingUtils.error(getClass(), e);
  68                                         }
  69                                 }
  70                         }catch (LazyInitializationException e){
  71                                 MessagingUtils.error(getClass(), e);
  72                         }
  73
  74                 }
  75                 return new String();
  76         }
  77
  78         /** {@inheritDoc} */
  79         @Override
  80     public String getDescription(Object anElement) {
  81                 if (anElement instanceof TaxonNode) {
  82                         Taxon data = ((TaxonNode) anElement).getTaxon();
  83                         return "Taxon: " + (data != null ? data.getTitleCache() : ">NO TAXON<");
  84                 }
  85                 return null;
  86         }
  87
  88         /** {@inheritDoc} */
  89         @Override
  90     public StyledString getStyledText(Object element) {
  91                 // determine style base on  user grants
  92                 Styler styler = null;
  93                 if(!CdmStore.currentAuthentiationHasPermission((CdmBase) element, RequiredPermissions.TAXONNODE_EDIT)){
  94                         styler = getNotGrantedStyler();
  95                 }
  96                 return new StyledString(getText(element), styler);
  97
  98         }
  99
 100         /**
 101          * @return
 102          */
 103         private Styler getNotGrantedStyler() {
 104                 if (notGrantedStyler  == null) {
 105                         notGrantedStyler = new Styler() {
 106                                 @Override
 107                                 public void applyStyles(TextStyle textStyle) {
 108                                         textStyle.underline = false;
 109                                         textStyle.foreground = StoreUtil.getColor(Resources.COLOR_TEXT_DISABLED);
 110                                 }
 111                         };
 112                 }
 113                 return notGrantedStyler;
 114         }
 115 }