eu.etaxonomy.taxeditor.navigation/src/main/java/eu/etaxonomy/taxeditor/navigation/navigator/handler/DeleteHandler.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.handler;
  12
  13 import java.util.HashSet;
  14 import java.util.Iterator;
  15 import java.util.Set;
  16
  17 import org.eclipse.core.commands.AbstractHandler;
  18 import org.eclipse.core.commands.ExecutionEvent;
  19 import org.eclipse.core.commands.ExecutionException;
  20 import org.eclipse.core.commands.IHandler;
  21 import org.eclipse.core.commands.common.NotDefinedException;
  22 import org.eclipse.jface.dialogs.MessageDialog;
  23 import org.eclipse.jface.viewers.TreeSelection;
  24 import org.eclipse.ui.IEditorInput;
  25 import org.eclipse.ui.IEditorReference;
  26 import org.eclipse.ui.IWorkbenchPage;
  27 import org.eclipse.ui.PartInitException;
  28 import org.eclipse.ui.handlers.HandlerUtil;
  29
  30 import eu.etaxonomy.cdm.api.service.config.TaxonDeletionConfigurator;
  31 import eu.etaxonomy.cdm.model.common.ITreeNode;
  32 import eu.etaxonomy.cdm.model.taxon.Classification;
  33 import eu.etaxonomy.cdm.model.taxon.ITaxonTreeNode;
  34 import eu.etaxonomy.cdm.model.taxon.TaxonNode;
  35 import eu.etaxonomy.taxeditor.editor.TaxonEditorInput;
  36 import eu.etaxonomy.taxeditor.model.MessagingUtils;
  37 import eu.etaxonomy.taxeditor.navigation.NavigationUtil;
  38 import eu.etaxonomy.taxeditor.navigation.navigator.TaxonNavigator;
  39 import eu.etaxonomy.taxeditor.navigation.navigator.operation.DeleteOperation;
  40 import eu.etaxonomy.taxeditor.operation.AbstractPostOperation;
  41
  42 /**
  43  * <p>DeleteTreeNodeHandler class.</p>
  44  *
  45  * @author n.hoffmann
  46  * @created 06.04.2009
  47  * @version 1.0
  48  */
  49 public class DeleteHandler extends AbstractHandler implements IHandler{
  50
  51         protected IWorkbenchPage activePage;
  52         protected TaxonNavigator taxonNavigator;
  53
  54         /** {@inheritDoc} */
  55         @Override
  56     public Object execute(ExecutionEvent event) throws ExecutionException {
  57
  58                 activePage = HandlerUtil.getActiveWorkbenchWindow(event).getActivePage();
  59
  60                 taxonNavigator = NavigationUtil.showNavigator();
  61
  62                 TreeSelection selection = (TreeSelection) HandlerUtil.getCurrentSelection(event);
  63
  64                 String plural = selection.size() > 1 ? "s" : "";
  65                 // Prompt user for confirmation
  66
  67
  68
  69                 Iterator selectionIterator = selection.iterator();
  70                 Set<ITaxonTreeNode> treeNodes = new HashSet<ITaxonTreeNode>();
  71
  72                 while (selectionIterator.hasNext()){
  73                         Object object = selectionIterator.next();
  74                         if(object instanceof ITaxonTreeNode) {
  75                 treeNodes.add((ITaxonTreeNode) object);
  76             }
  77                 }
  78                 boolean allEditorsClosed = true;
  79                 for (ITaxonTreeNode treeNode : treeNodes){
  80                         if(treeNode instanceof TaxonNode) {
  81                                 allEditorsClosed &= closeObsoleteEditor((TaxonNode) treeNode);
  82                         }
  83                 }
  84                 AbstractPostOperation operation = null;
  85                 if (treeNodes.size() == 1 ){
  86                         try {
  87
  88                                 ITaxonTreeNode treeNode = treeNodes.iterator().next();
  89                                 ITaxonTreeNode taxonNode =treeNode;
  90
  91                                 if (taxonNode instanceof Classification && taxonNode.hasChildNodes()){
  92                                         if(! MessageDialog.openConfirm(HandlerUtil.getActiveShell(event), "Confirm Deletion", "Do you really want to delete the classification? The tree has children, they will be deleted, too")){
  93                                                 return null;
  94                                         }
  95                                 } else if (taxonNode instanceof Classification && !taxonNode.hasChildNodes()){
  96                                         if(! MessageDialog.openConfirm(HandlerUtil.getActiveShell(event), "Confirm Deletion", "Do you really want to delete the classification?")){
  97                                                 return null;
  98                                         }
  99                                 } else {
 100                                         if(! MessageDialog.openConfirm(HandlerUtil.getActiveShell(event), "Confirm Deletion", "Do you really want to delete the selected node?")){
 101                                                 return null;
 102                                         }
 103                                 }
 104
 105                                 if (allEditorsClosed){
 106                                         /*if(! MessageDialog.openConfirm(HandlerUtil.getActiveShell(event), "Confirm Deletion", "Do you really want to delete the selected nodes?")){
 107                                                 return null;
 108                                         }*/
 109                                                 operation = new DeleteOperation(
 110                                                                 event.getCommand().getName(), NavigationUtil.getUndoContext(),
 111                                                                 taxonNode, new TaxonDeletionConfigurator(), taxonNavigator, taxonNavigator);
 112
 113                                                 NavigationUtil.executeOperation(operation);
 114                                                 //}
 115                                 }
 116
 117
 118
 119                         } catch (NotDefinedException e) {
 120                                 MessagingUtils.warn(getClass(), "Command name not set");
 121                         }
 122                 } else{
 123                         try{
 124                                 if(! MessageDialog.openConfirm(HandlerUtil.getActiveShell(event), "Confirm Deletion", "Do you really want to delete the selected nodes?")){
 125                                         return null;
 126                                 }
 127                                 if (allEditorsClosed){
 128                                         operation = new DeleteOperation(
 129                                                         event.getCommand().getName(), NavigationUtil.getUndoContext(),
 130                                                         treeNodes, new TaxonDeletionConfigurator(), taxonNavigator, taxonNavigator);
 131
 132                                         NavigationUtil.executeOperation(operation);
 133                                 }
 134                         }catch (NotDefinedException e) {
 135                                 MessagingUtils.warn(getClass(), "Command name not set");
 136                         }
 137                 }
 138                 return null;
 139         }
 140
 141         protected boolean closeObsoleteEditor(TaxonNode taxonNode){
 142                 boolean result = true;
 143                 for (IEditorReference ref : activePage.getEditorReferences()) {
 144                         try {
 145                                 String treeIndex = ((ITreeNode)taxonNode).treeIndex();
 146
 147
 148                                 IEditorInput input = ref.getEditorInput();
 149                                 if (input instanceof TaxonEditorInput) {
 150                                         TaxonNode node = ((TaxonEditorInput) input).getTaxonNode();
 151                                         //if node is a child of taxonNode then close the editor
 152                                         if( ((ITreeNode) node).treeIndex().startsWith(treeIndex)){
 153                                         //if (taxonNode.equals(node)) {
 154                                                 result &= activePage.closeEditor(ref.getEditor(false), true);
 155
 156                                         }
 157                                 }
 158                         } catch (PartInitException e) {
 159                                 continue;
 160                         }
 161                 }
 162                 return result;
 163         }
 164 }