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