eu.etaxonomy.taxeditor.navigation/src/main/java/eu/etaxonomy/taxeditor/navigation/navigator/TreeNodeDropAdapterAssistant.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.navigation.navigator;
  11
  12 import java.util.EnumSet;
  13 import java.util.HashSet;
  14 import java.util.Iterator;
  15 import java.util.Set;
  16 import java.util.UUID;
  17
  18 import org.apache.log4j.Logger;
  19 import org.eclipse.core.commands.operations.AbstractOperation;
  20 import org.eclipse.core.commands.operations.IUndoContext;
  21 import org.eclipse.core.runtime.IStatus;
  22 import org.eclipse.core.runtime.Status;
  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.ui.navigator.CommonDropAdapter;
  30 import org.eclipse.ui.navigator.CommonDropAdapterAssistant;
  31
  32 import eu.etaxonomy.cdm.hibernate.HibernateProxyHelper;
  33 import eu.etaxonomy.cdm.model.common.CdmBase;
  34 import eu.etaxonomy.cdm.model.taxon.Classification;
  35 import eu.etaxonomy.cdm.model.taxon.ITaxonTreeNode;
  36 import eu.etaxonomy.cdm.model.taxon.TaxonNode;
  37 import eu.etaxonomy.cdm.persistence.hibernate.permission.CRUD;
  38 import eu.etaxonomy.taxeditor.navigation.NavigationUtil;
  39 import eu.etaxonomy.taxeditor.navigation.navigator.TreeNodeDropAdapter.MovingType;
  40 import eu.etaxonomy.taxeditor.navigation.navigator.operation.MoveTaxonOperation;
  41 import eu.etaxonomy.taxeditor.navigation.navigator.operation.RemotingMoveTaxonOperation;
  42 import eu.etaxonomy.taxeditor.operation.AbstractPostOperation;
  43 import eu.etaxonomy.taxeditor.operation.IPostOperationEnabled;
  44 import eu.etaxonomy.taxeditor.preference.PreferencesUtil;
  45 import eu.etaxonomy.taxeditor.store.CdmStore;
  46
  47 /**
  48  * <p>TaxonNodeDropAdapterAssistant class.</p>
  49  *
  50  * @author p.ciardelli
  51  * @created 03.06.2009
  52  * @version 1.0
  53  */
  54 public class TreeNodeDropAdapterAssistant extends CommonDropAdapterAssistant implements IPostOperationEnabled {
  55
  56         private static final Logger logger = Logger.getLogger(TreeNodeDropAdapterAssistant.class);
  57
  58         /** Constant <code>ID="eu.etaxonomy.taxeditor.navigation.navig"{trunked}</code> */
  59         public static final String ID = "eu.etaxonomy.taxeditor.navigation.navigator.dropassistant"; //$NON-NLS-1$
  60
  61         private static final EnumSet<CRUD> UPDATE = EnumSet.of(CRUD.UPDATE);
  62
  63         /* (non-Javadoc)
  64          * @see org.eclipse.ui.navigator.CommonDropAdapterAssistant#handleDrop(org.eclipse.ui.navigator.CommonDropAdapter, org.eclipse.swt.dnd.DropTargetEvent, java.lang.Object)
  65          */
  66         /** {@inheritDoc} */
  67         @Override
  68         public IStatus handleDrop(CommonDropAdapter dropAdapter,
  69                         DropTargetEvent dropTargetEvent, Object target) {
  70
  71
  72                 if (target instanceof ITaxonTreeNode) {
  73                         Set<TaxonNode> taxonNodes = getSelectedTaxa();
  74                         ITaxonTreeNode targetTreeNode = (ITaxonTreeNode) target;
  75                         if (targetTreeNode instanceof Classification){
  76                                 targetTreeNode = ((Classification)targetTreeNode).getRootNode();
  77                                 targetTreeNode = HibernateProxyHelper.deproxy(targetTreeNode, TaxonNode.class);
  78                         }
  79                         //if(taxonNodes != null) {
  80                                 if (taxonNodes.size() >= 1){
  81                                         return moveTaxon(taxonNodes, targetTreeNode);
  82                                 /*} else{
  83                                         if( MessageDialog.openConfirm(null, "Moving taxon", "The operation move accepted taxon to other parent is available only for a single taxon.")){
  84                                                 return null;
  85                                         }
  86                                 }*/
  87             }
  88                 }
  89
  90                 return Status.CANCEL_STATUS;
  91         }
  92
  93         private Set<TaxonNode> getSelectedTaxa(){
  94                 HashSet<TaxonNode> taxonNodes = new HashSet<TaxonNode>();
  95
  96                 ISelection selection = LocalSelectionTransfer.getTransfer().getSelection();
  97                 if (selection instanceof TreeSelection) {
  98
  99                         Iterator selectionIterator = ((TreeSelection) selection).iterator();
 100
 101                         while (selectionIterator.hasNext()){
 102                                 Object object = selectionIterator.next();
 103                                 if(object instanceof TaxonNode){
 104                                         TaxonNode taxonNode = (TaxonNode) object;
 105                                         taxonNodes.add(taxonNode);
 106                                 }
 107                         }
 108                 }
 109                 return taxonNodes.size() > 0 ? taxonNodes : null;
 110         }
 111
 112         /* (non-Javadoc)
 113          * @see org.eclipse.ui.navigator.CommonDropAdapterAssistant#validateDrop(java.lang.Object, int, org.eclipse.swt.dnd.TransferData)
 114          */
 115         /** {@inheritDoc} */
 116         @Override
 117         public IStatus validateDrop(Object target, int operation,
 118                         TransferData transferType) {
 119                 if (target instanceof ITaxonTreeNode) {
 120
 121                     // check users permissions with target taxonnode and taxon
 122                     if (target instanceof TaxonNode) {
 123                         TaxonNode targetNode = (TaxonNode)target;
 124                         Boolean hasTargetNodePermission = CdmStore.currentAuthentiationHasPermission(targetNode, UPDATE);
 125                 Boolean hasTargetTaxonPermission = CdmStore.currentAuthentiationHasPermission(targetNode.getTaxon(), UPDATE);
 126
 127                 if(logger.isDebugEnabled()){
 128                     logger.debug("target: " + targetNode.getTaxon().getTitleCache());
 129                 }
 130
 131                         if(!hasTargetNodePermission || ! hasTargetNodePermission){
 132                             if(logger.isDebugEnabled()){
 133                                 logger.debug("CANCEL_STATUS for target node: " + hasTargetNodePermission.toString() + " " + hasTargetTaxonPermission.toString() + " ");
 134                             }
 135                             return Status.CANCEL_STATUS;
 136                         }
 137                     }
 138
 139                     // do not allow to drop onto itself and
 140                     // check users permissions with all selected taxon nodes and taxa
 141                     for(TaxonNode taxonNode : getSelectedTaxa()){
 142                             logger.debug("selectedTaxa: " + taxonNode.getTaxon().getTitleCache());
 143                                 Boolean isSameTaxonNode = taxonNode.equals(target);
 144                                 Boolean hasTaxonNodePermission = CdmStore.currentAuthentiationHasPermission(taxonNode, UPDATE);
 145                                 Boolean hasTaxonPermission = CdmStore.currentAuthentiationHasPermission(taxonNode.getTaxon(), UPDATE);
 146                 if (
 147                                 isSameTaxonNode
 148                                 || !hasTaxonNodePermission
 149                     || !hasTaxonPermission
 150                         ) {
 151                     if(logger.isDebugEnabled()){
 152                         logger.debug("CANCEL_STATUS for selected  " + isSameTaxonNode.toString() + " " + hasTaxonNodePermission.toString() + " " + hasTaxonPermission.toString() + " ");
 153                     }
 154                                         return Status.CANCEL_STATUS;
 155                                 }
 156                         }
 157                         logger.debug("OK_STATUS");
 158                         return Status.OK_STATUS;
 159                 }
 160                 logger.debug("CANCEL_STATUS");
 161                 return Status.CANCEL_STATUS;
 162         }
 163
 164
 165         /**
 166          * @param childTaxonNode
 167          * @param parentTaxon
 168          * @return
 169          */
 170         private IStatus moveTaxon(Set<TaxonNode> taxonNodes, ITaxonTreeNode targetITaxonTreeNode) {
 171
 172                 TaxonNavigator taxonNavigator;
 173                 taxonNavigator = (TaxonNavigator) NavigationUtil.showView(TaxonNavigator.ID);
 174
 175                 if(targetITaxonTreeNode instanceof TaxonNode){
 176
 177                         TaxonNode targetTaxonNode = (TaxonNode) targetITaxonTreeNode;
 178                 // Make sure parent taxon does not have unsaved changes
 179                         if (NavigationUtil.isDirty(targetTaxonNode)){
 180                                 MessageDialog.openWarning(NavigationUtil.getShell(), "Unsaved Parent Taxon", "There are unsaved " +
 181                                 "changes in the parent taxon. Pleas save first.");
 182                                 return Status.CANCEL_STATUS;
 183                         }
 184
 185                 }
 186                 Iterator<TaxonNode> taxIterator = taxonNodes.iterator();
 187         Set<UUID> uuids = new HashSet<UUID>();
 188         TaxonNode node = null;
 189         while(taxIterator.hasNext()){
 190             node = taxIterator.next();
 191             uuids.add(node.getUuid());
 192         }
 193                 if (!PreferencesUtil.getSortNodesNaturally()){
 194                         IUndoContext workspaceUndoContext = NavigationUtil.getWorkbenchUndoContext();
 195                         if (workspaceUndoContext == null) {
 196                                 logger.error("Workspace undo context is null. DND operation cancelled");
 197                                 return Status.CANCEL_STATUS;
 198                         }
 199
 200                         AbstractOperation operation = new RemotingMoveTaxonOperation(taxonNavigator, false, uuids, (TaxonNode)targetITaxonTreeNode, MovingType.CHILD);
 201                         NavigationUtil.executeOperation(operation, null);
 202
 203
 204                         logger.info("Moved taxa to new parent " + targetITaxonTreeNode);
 205                         return Status.OK_STATUS;
 206                 }else{
 207                         String[] buttonLables = {"Child", "Behind", "Cancel"};
 208                         MessageDialog dialog = new MessageDialog(null, "Target node", null, "Do you want to move the taxon as child, before or behind the target.", MessageDialog.QUESTION_WITH_CANCEL, buttonLables, 0);
 209                         dialog.open();
 210                         int returnCode = dialog.getReturnCode();
 211                         if (returnCode == 0){
 212                                 IUndoContext workspaceUndoContext = NavigationUtil.getWorkbenchUndoContext();
 213                                 if (workspaceUndoContext == null) {
 214                                         logger.error("Workspace undo context is null. DND operation cancelled");
 215                                         return Status.CANCEL_STATUS;
 216                                 }
 217
 218                                 AbstractOperation operation = new RemotingMoveTaxonOperation(taxonNavigator, false, uuids, (TaxonNode)targetITaxonTreeNode, MovingType.CHILD);
 219                                 NavigationUtil.executeOperation(operation, null);
 220
 221
 222                                 logger.info("Moved taxa to new parent " + targetITaxonTreeNode);
 223                                 return Status.OK_STATUS;
 224                         }else if (returnCode == 1){
 225                                 IUndoContext workspaceUndoContext = NavigationUtil.getWorkbenchUndoContext();
 226                                 if (workspaceUndoContext == null) {
 227                                         logger.error("Workspace undo context is null. DND operation cancelled");
 228                                         return Status.CANCEL_STATUS;
 229                                 }
 230                                 TaxonNode targetNode = (TaxonNode) targetITaxonTreeNode;
 231
 232                                 AbstractOperation operation = new RemotingMoveTaxonOperation(taxonNavigator, false, uuids, targetNode, MovingType.BEHIND);
 233                                 NavigationUtil.executeOperation(operation, null);
 234
 235                                 logger.info("Moved taxa to new parent " + targetITaxonTreeNode);
 236                                 return Status.OK_STATUS;
 237 //                      }else if (returnCode == 2){
 238 //                IUndoContext workspaceUndoContext = NavigationUtil.getWorkbenchUndoContext();
 239 //                if (workspaceUndoContext == null) {
 240 //                    logger.error("Workspace undo context is null. DND operation cancelled");
 241 //                    return Status.CANCEL_STATUS;
 242 //                }
 243 //                TaxonNode targetNode = (TaxonNode) targetITaxonTreeNode;
 244 //
 245 //                if(CdmStore.getCurrentSessionManager().isRemoting()) {
 246 //                    AbstractOperation operation = new RemotingMoveTaxonOperation(taxonNavigator, false, uuids, targetNode, MovingType.PREVIOUS);
 247 //                    NavigationUtil.executeOperation(operation, null);
 248 //                } else {
 249 //                    AbstractPostOperation operation = new MoveTaxonOperation
 250 //                            ("Move Taxon", workspaceUndoContext, uuids, targetNode, this, taxonNavigator, MovingType.PREVIOUS);
 251 //                    NavigationUtil.executeOperation(operation);
 252 //                }
 253 //                logger.info("Moved taxa to new parent " + targetITaxonTreeNode);
 254 //                return Status.OK_STATUS;
 255             } else{
 256                                 return Status.CANCEL_STATUS;
 257                         }
 258
 259
 260                 }
 261         }
 262
 263         /* (non-Javadoc)
 264          * @see eu.etaxonomy.taxeditor.operations.IPostOperationEnabled#postOperation(eu.etaxonomy.cdm.model.common.CdmBase)
 265          */
 266         /** {@inheritDoc} */
 267         @Override
 268     public boolean postOperation(CdmBase objectAffectedByOperation) {
 269                 return true;
 270         }
 271
 272         /**
 273          * <p>onComplete</p>
 274          *
 275          * @return a boolean.
 276          */
 277         @Override
 278     public boolean onComplete() {
 279                 // TODO Auto-generated method stub
 280                 return false;
 281         }
 282
 283 }