taxeditor-editor/src/main/java/eu/etaxonomy/taxeditor/editor/view/descriptive/handler/CreateDescriptionElementHandler.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.editor.view.descriptive.handler;
  12
  13 import org.apache.log4j.Logger;
  14 import org.eclipse.core.commands.AbstractHandler;
  15 import org.eclipse.core.commands.ExecutionEvent;
  16 import org.eclipse.core.commands.ExecutionException;
  17 import org.eclipse.core.commands.common.NotDefinedException;
  18 import org.eclipse.jface.viewers.ISelection;
  19 import org.eclipse.jface.viewers.IStructuredSelection;
  20 import org.eclipse.jface.viewers.ITreeSelection;
  21 import org.eclipse.jface.viewers.TreePath;
  22 import org.eclipse.swt.widgets.Event;
  23 import org.eclipse.ui.IEditorInput;
  24 import org.eclipse.ui.IEditorPart;
  25 import org.eclipse.ui.IWorkbenchPart;
  26 import org.eclipse.ui.forms.editor.FormEditor;
  27 import org.eclipse.ui.handlers.HandlerUtil;
  28
  29 import eu.etaxonomy.cdm.model.description.Feature;
  30 import eu.etaxonomy.cdm.model.description.TaxonDescription;
  31 import eu.etaxonomy.cdm.model.taxon.Taxon;
  32 import eu.etaxonomy.taxeditor.editor.EditorUtil;
  33 import eu.etaxonomy.taxeditor.editor.TaxonEditorInput;
  34 import eu.etaxonomy.taxeditor.operations.AbstractPostOperation;
  35 import eu.etaxonomy.taxeditor.operations.CreateDescriptionElementOperation;
  36 import eu.etaxonomy.taxeditor.operations.IPostOperationEnabled;
  37
  38 /**
  39  * <p>CreateDescriptionElementHandler class.</p>
  40  *
  41  * @author n.hoffmann
  42  * @created 16.04.2009
  43  * @version 1.0
  44  */
  45 public class CreateDescriptionElementHandler extends AbstractHandler {
  46
  47         /*
  48          * (non-Javadoc)
  49          *
  50          * @see
  51          * org.eclipse.core.commands.IHandler#execute(org.eclipse.core.commands.
  52          * ExecutionEvent)
  53          */
  54         /** {@inheritDoc} */
  55         public Object execute(ExecutionEvent event) throws ExecutionException {
  56                 IWorkbenchPart part = HandlerUtil.getActivePart(event);
  57                 IPostOperationEnabled postOperationEnabled = (part instanceof IPostOperationEnabled) ? (IPostOperationEnabled) part
  58                                 : null;
  59
  60                 IEditorPart editor = HandlerUtil.getActiveEditor(event);
  61                 if (editor instanceof FormEditor) {
  62                         editor = ((FormEditor) editor).getActiveEditor();
  63                 }
  64                 IEditorInput input = editor.getEditorInput();
  65                 if (input instanceof TaxonEditorInput) {
  66                         Taxon taxon = ((TaxonEditorInput) input).getTaxon();
  67
  68                         TaxonDescription description = null;
  69
  70                         ISelection selection = HandlerUtil.getCurrentSelection(event);
  71                         if (selection instanceof ITreeSelection) {
  72                                 TreePath[] paths = ((ITreeSelection) selection).getPaths();
  73                                 Object firstSegment = paths[0].getFirstSegment();
  74                                 if (firstSegment instanceof TaxonDescription) {
  75                                         description = (TaxonDescription) firstSegment;
  76                                 }
  77                         }else if (selection instanceof IStructuredSelection) {
  78                                 Object selectedElement = ((IStructuredSelection) selection)
  79                                                 .getFirstElement();
  80                                 if (selectedElement instanceof TaxonDescription){
  81                                         description = (TaxonDescription) selectedElement;
  82                                 }
  83                         }
  84
  85                         if (description != null) {
  86
  87                                 Feature feature = (Feature) ((Event) event.getTrigger()).data;
  88
  89                                 AbstractPostOperation operation = null;
  90                                 try {
  91                                         // TODO use undo context specific to editor
  92                                         operation = new CreateDescriptionElementOperation(event
  93                                                         .getCommand().getName(),
  94                                                         EditorUtil.getUndoContext(), taxon,
  95                                                         description, feature, postOperationEnabled);
  96                                         EditorUtil.executeOperation(operation);
  97                                 } catch (NotDefinedException e) {
  98                                         EditorUtil.warn(getClass(), "Command name not set");
  99                                 }
 100                         } else {
 101                                 EditorUtil.error(getClass(), new IllegalArgumentException("Could not determine the taxon description"));
 102                                 return null;
 103                         }
 104                 }
 105                 return null;
 106
 107         }
 108 }