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