eu.etaxonomy.taxeditor.editor/src/main/java/eu/etaxonomy/taxeditor/editor/view/concept/handler/DeleteConceptRelationHandler.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.editor.view.concept.handler;
  11
  12 import java.util.HashSet;
  13 import java.util.Iterator;
  14 import java.util.Set;
  15
  16 import org.eclipse.core.commands.AbstractHandler;
  17 import org.eclipse.core.commands.ExecutionEvent;
  18 import org.eclipse.core.commands.ExecutionException;
  19 import org.eclipse.core.commands.common.NotDefinedException;
  20 import org.eclipse.jface.viewers.ISelection;
  21 import org.eclipse.jface.viewers.IStructuredSelection;
  22 import org.eclipse.ui.IWorkbenchPart;
  23 import org.eclipse.ui.handlers.HandlerUtil;
  24
  25 import eu.etaxonomy.cdm.model.taxon.TaxonRelationship;
  26 import eu.etaxonomy.taxeditor.editor.EditorUtil;
  27 import eu.etaxonomy.taxeditor.editor.Page;
  28 import eu.etaxonomy.taxeditor.editor.name.TaxonNameEditor;
  29 import eu.etaxonomy.taxeditor.editor.view.concept.operation.DeleteConceptRelationOperation;
  30 import eu.etaxonomy.taxeditor.model.MessagingUtils;
  31 import eu.etaxonomy.taxeditor.operation.AbstractPostOperation;
  32 import eu.etaxonomy.taxeditor.operation.IPostOperationEnabled;
  33
  34 /**
  35  * @author n.hoffmann
  36  * @created Jan 25, 2011
  37  * @version 1.0
  38  */
  39 public class DeleteConceptRelationHandler extends AbstractHandler {
  40
  41         /* (non-Javadoc)
  42          * @see org.eclipse.core.commands.IHandler#execute(org.eclipse.core.commands.ExecutionEvent)
  43          */
  44         @Override
  45         public Object execute(ExecutionEvent event) throws ExecutionException {
  46                 TaxonNameEditor editor = (TaxonNameEditor) EditorUtil.getActiveEditorPage(
  47                                 Page.NAME);
  48
  49                 ISelection selection = HandlerUtil.getActiveSite(event).getSelectionProvider().getSelection();
  50
  51                 Set<TaxonRelationship> relations = new HashSet<TaxonRelationship>();
  52
  53                 if(selection instanceof IStructuredSelection){
  54                         IStructuredSelection structuredSelection = (IStructuredSelection) selection;
  55                         Iterator iterator = structuredSelection.iterator();
  56
  57                         while (iterator.hasNext()){
  58                                 Object element = iterator.next();
  59                                 if(element instanceof TaxonRelationship){
  60                                         relations.add((TaxonRelationship) element);
  61                                 }
  62                         }
  63                 }
  64
  65                 IWorkbenchPart activePart = HandlerUtil.getActivePart(event);
  66                 IPostOperationEnabled postOperationEnabled = (activePart instanceof IPostOperationEnabled) ? (IPostOperationEnabled) activePart : null;
  67
  68                 try {
  69                         AbstractPostOperation operation = new DeleteConceptRelationOperation(event.getCommand().getName(),
  70                                         editor.getUndoContext(), editor.getTaxon(), relations, postOperationEnabled);
  71                         EditorUtil.executeOperation(operation);
  72                 } catch (NotDefinedException e) {
  73                         MessagingUtils.warn(getClass(), "Command name not set");
  74                 }
  75
  76                 return null;
  77         }
  78 }