eu.etaxonomy.taxeditor.navigation/src/main/java/eu/etaxonomy/taxeditor/navigation/navigator/TreeNodeDropAdapterAssistant.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 java.util.EnumSet;
  14 import java.util.HashSet;
  15 import java.util.Iterator;
  16 import java.util.Set;
  17
  18 import org.apache.log4j.Logger;
  19 import org.eclipse.core.commands.operations.IUndoContext;
  20 import org.eclipse.core.runtime.IStatus;
  21 import org.eclipse.core.runtime.Status;
  22 import org.eclipse.jface.dialogs.IconAndMessageDialog;
  23 import org.eclipse.jface.dialogs.MessageDialog;
  24 import org.eclipse.jface.util.LocalSelectionTransfer;
  25 import org.eclipse.jface.viewers.ISelection;
  26 import org.eclipse.jface.viewers.TreeSelection;
  27 import org.eclipse.swt.dnd.DropTargetEvent;
  28 import org.eclipse.swt.dnd.TransferData;
  29 import org.eclipse.swt.graphics.Image;
  30 import org.eclipse.swt.widgets.Shell;
  31 import org.eclipse.ui.handlers.HandlerUtil;
  32 import org.eclipse.ui.navigator.CommonDropAdapter;
  33 import org.eclipse.ui.navigator.CommonDropAdapterAssistant;
  34
  35 import eu.etaxonomy.cdm.hibernate.HibernateProxyHelper;
  36 import eu.etaxonomy.cdm.model.common.CdmBase;
  37 import eu.etaxonomy.cdm.model.taxon.Classification;
  38 import eu.etaxonomy.cdm.model.taxon.ITaxonTreeNode;
  39 import eu.etaxonomy.cdm.model.taxon.TaxonNode;
  40 import eu.etaxonomy.cdm.persistence.hibernate.permission.CRUD;
  41 import eu.etaxonomy.taxeditor.navigation.NavigationUtil;
  42 import eu.etaxonomy.taxeditor.navigation.navigator.operation.MoveTaxonOperation;
  43 import eu.etaxonomy.taxeditor.operation.AbstractPostOperation;
  44 import eu.etaxonomy.taxeditor.operation.IPostOperationEnabled;
  45 import eu.etaxonomy.taxeditor.preference.PreferencesUtil;
  46 import eu.etaxonomy.taxeditor.store.CdmStore;
  47
  48 /**
  49  * <p>TaxonNodeDropAdapterAssistant class.</p>
  50  *
  51  * @author p.ciardelli
  52  * @created 03.06.2009
  53  * @version 1.0
  54  */
  55 public class TreeNodeDropAdapterAssistant extends CommonDropAdapterAssistant implements IPostOperationEnabled {
  56
  57         private static final Logger logger = Logger.getLogger(TreeNodeDropAdapterAssistant.class);
  58
  59         /** Constant <code>ID="eu.etaxonomy.taxeditor.navigation.navig"{trunked}</code> */
  60         public static final String ID = "eu.etaxonomy.taxeditor.navigation.navigator.dropassistant"; //$NON-NLS-1$
  61
  62         private static final EnumSet<CRUD> UPDATE = EnumSet.of(CRUD.UPDATE);
  63
  64         /* (non-Javadoc)
  65          * @see org.eclipse.ui.navigator.CommonDropAdapterAssistant#handleDrop(org.eclipse.ui.navigator.CommonDropAdapter, org.eclipse.swt.dnd.DropTargetEvent, java.lang.Object)
  66          */
  67         /** {@inheritDoc} */
  68         @Override
  69         public IStatus handleDrop(CommonDropAdapter dropAdapter,
  70                         DropTargetEvent dropTargetEvent, Object target) {
  71
  72
  73                 if (target instanceof ITaxonTreeNode) {
  74                         Set<TaxonNode> taxonNodes = getSelectedTaxa();
  75                         ITaxonTreeNode targetTreeNode = (ITaxonTreeNode) target;
  76                         if (targetTreeNode instanceof Classification){
  77                                 targetTreeNode = ((Classification)targetTreeNode).getRootNode();
  78                                 targetTreeNode = HibernateProxyHelper.deproxy(targetTreeNode, TaxonNode.class);
  79                         }
  80                         if(taxonNodes != null) {
  81                                 if (taxonNodes.size() == 1){
  82                                         return moveTaxon(taxonNodes.iterator().next(), targetTreeNode);
  83                                 } else{
  84                                         if( MessageDialog.openConfirm(null, "Moving taxon", "The operation move accepted taxon to other parent is available only for a single taxon.")){
  85                                                 return null;
  86                                         }
  87                                 }
  88             }
  89                 }
  90
  91                 return Status.CANCEL_STATUS;
  92         }
  93
  94         private Set<TaxonNode> getSelectedTaxa(){
  95                 HashSet<TaxonNode> taxonNodes = new HashSet<TaxonNode>();
  96
  97                 ISelection selection = LocalSelectionTransfer.getTransfer().getSelection();
  98                 if (selection instanceof TreeSelection) {
  99
 100                         Iterator selectionIterator = ((TreeSelection) selection).iterator();
 101
 102                         while (selectionIterator.hasNext()){
 103                                 Object object = selectionIterator.next();
 104                                 if(object instanceof TaxonNode){
 105                                         TaxonNode taxonNode = (TaxonNode) object;
 106                                         taxonNodes.add(taxonNode);
 107                                 }
 108                         }
 109                 }
 110                 return taxonNodes.size() > 0 ? taxonNodes : null;
 111         }
 112
 113         /* (non-Javadoc)
 114          * @see org.eclipse.ui.navigator.CommonDropAdapterAssistant#validateDrop(java.lang.Object, int, org.eclipse.swt.dnd.TransferData)
 115          */
 116         /** {@inheritDoc} */
 117         @Override
 118         public IStatus validateDrop(Object target, int operation,
 119                         TransferData transferType) {
 120                 if (target instanceof ITaxonTreeNode) {
 121
 122                     // check users permissions with target taxonnode and taxon
 123                     if (target instanceof TaxonNode) {
 124                         TaxonNode targetNode = (TaxonNode)target;
 125                         Boolean hasTargetNodePermission = CdmStore.currentAuthentiationHasPermission(targetNode, UPDATE);
 126                 Boolean hasTargetTaxonPermission = CdmStore.currentAuthentiationHasPermission(targetNode.getTaxon(), UPDATE);
 127
 128                 if(logger.isDebugEnabled()){
 129                     logger.debug("target: " + targetNode.getTaxon().getTitleCache());
 130                 }
 131
 132                         if(!hasTargetNodePermission || ! hasTargetNodePermission){
 133                             if(logger.isDebugEnabled()){
 134                                 logger.debug("CANCEL_STATUS for target node: " + hasTargetNodePermission.toString() + " " + hasTargetTaxonPermission.toString() + " ");
 135                             }
 136                             return Status.CANCEL_STATUS;
 137                         }
 138                     }
 139
 140                     // do not allow to drop onto itself and
 141                     // check users permissions with all selected taxon nodes and taxa
 142                     for(TaxonNode taxonNode : getSelectedTaxa()){
 143                             logger.debug("selectedTaxa: " + taxonNode.getTaxon().getTitleCache());
 144                                 Boolean isSameTaxonNode = taxonNode.equals(target);
 145                                 Boolean hasTaxonNodePermission = CdmStore.currentAuthentiationHasPermission(taxonNode, UPDATE);
 146                                 Boolean hasTaxonPermission = CdmStore.currentAuthentiationHasPermission(taxonNode.getTaxon(), UPDATE);
 147                 if (
 148                                 isSameTaxonNode
 149                                 || !hasTaxonNodePermission
 150                     || !hasTaxonPermission
 151                         ) {
 152                     if(logger.isDebugEnabled()){
 153                         logger.debug("CANCEL_STATUS for selected  " + isSameTaxonNode.toString() + " " + hasTaxonNodePermission.toString() + " " + hasTaxonPermission.toString() + " ");
 154                     }
 155                                         return Status.CANCEL_STATUS;
 156                                 }
 157                         }
 158                         logger.debug("OK_STATUS");
 159                         return Status.OK_STATUS;
 160                 }
 161                 logger.debug("CANCEL_STATUS");
 162                 return Status.CANCEL_STATUS;
 163         }
 164
 165
 166         /**
 167          * @param childTaxonNode
 168          * @param parentTaxon
 169          * @return
 170          */
 171         private IStatus moveTaxon(TaxonNode taxonNode, ITaxonTreeNode targetITaxonTreeNode) {
 172
 173                 TaxonNavigator taxonNavigator;
 174                 taxonNavigator = (TaxonNavigator) NavigationUtil.showView(TaxonNavigator.ID);
 175
 176                 if(targetITaxonTreeNode instanceof TaxonNode){
 177
 178                         TaxonNode targetTaxonNode = (TaxonNode) targetITaxonTreeNode;
 179                 // Make sure parent taxon does not have unsaved changes
 180                         if (NavigationUtil.isDirty(targetTaxonNode)){
 181                                 MessageDialog.openWarning(NavigationUtil.getShell(), "Unsaved Parent Taxon", "There are unsaved " +
 182                                 "changes in the parent taxon. Pleas save first.");
 183                                 return Status.CANCEL_STATUS;
 184                         }
 185
 186                 }
 187                 if (!PreferencesUtil.getSortNodesNaturally()){
 188                         IUndoContext workspaceUndoContext = NavigationUtil.getWorkbenchUndoContext();
 189                         if (workspaceUndoContext == null) {
 190                                 logger.error("Workspace undo context is null. DND operation cancelled");
 191                                 return Status.CANCEL_STATUS;
 192                         }
 193
 194                         AbstractPostOperation operation = new MoveTaxonOperation
 195                                         ("Move Taxon", workspaceUndoContext, taxonNode, targetITaxonTreeNode, this, taxonNavigator, true);
 196                         NavigationUtil.executeOperation(operation);
 197
 198                         logger.info("Moved taxa to new parent " + targetITaxonTreeNode);
 199                         return Status.OK_STATUS;
 200                 }else{
 201                         String[] buttonLables = {"Parent", "Predecessor", "Cancel"};
 202                         MessageDialog dialog = new MessageDialog(null, "Target node", null, "Do you want to use the target node as parent or do you want to move the taxon below the target.", MessageDialog.QUESTION_WITH_CANCEL, buttonLables, 0);
 203                         dialog.open();
 204                         int returnCode = dialog.getReturnCode();
 205                         if (returnCode == 0){
 206                                 IUndoContext workspaceUndoContext = NavigationUtil.getWorkbenchUndoContext();
 207                                 if (workspaceUndoContext == null) {
 208                                         logger.error("Workspace undo context is null. DND operation cancelled");
 209                                         return Status.CANCEL_STATUS;
 210                                 }
 211
 212                                 AbstractPostOperation operation = new MoveTaxonOperation
 213                                                 ("Move Taxon", workspaceUndoContext, taxonNode, targetITaxonTreeNode, this, taxonNavigator, true);
 214                                 NavigationUtil.executeOperation(operation);
 215
 216                                 logger.info("Moved taxa to new parent " + targetITaxonTreeNode);
 217                                 return Status.OK_STATUS;
 218                         }else if (returnCode == 1){
 219                                 IUndoContext workspaceUndoContext = NavigationUtil.getWorkbenchUndoContext();
 220                                 if (workspaceUndoContext == null) {
 221                                         logger.error("Workspace undo context is null. DND operation cancelled");
 222                                         return Status.CANCEL_STATUS;
 223                                 }
 224
 225                                 AbstractPostOperation operation = new MoveTaxonOperation
 226                                                 ("Move Taxon", workspaceUndoContext, taxonNode, targetITaxonTreeNode, this, taxonNavigator, false);
 227                                 NavigationUtil.executeOperation(operation);
 228
 229                                 logger.info("Moved taxa to new parent " + targetITaxonTreeNode);
 230                                 return Status.OK_STATUS;
 231                         } else{
 232                                 return Status.CANCEL_STATUS;
 233                         }
 234
 235
 236                 }
 237         }
 238
 239         /* (non-Javadoc)
 240          * @see eu.etaxonomy.taxeditor.operations.IPostOperationEnabled#postOperation(eu.etaxonomy.cdm.model.common.CdmBase)
 241          */
 242         /** {@inheritDoc} */
 243         @Override
 244     public boolean postOperation(CdmBase objectAffectedByOperation) {
 245                 return true;
 246         }
 247
 248         /**
 249          * <p>onComplete</p>
 250          *
 251          * @return a boolean.
 252          */
 253         @Override
 254     public boolean onComplete() {
 255                 // TODO Auto-generated method stub
 256                 return false;
 257         }
 258
 259 }