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