eu.etaxonomy.taxeditor.editor/src/main/java/eu/etaxonomy/taxeditor/editor/view/descriptive/handler/DeleteHandler.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.descriptive.handler;
  11
  12 import java.util.ArrayList;
  13 import java.util.List;
  14
  15 import org.eclipse.core.commands.AbstractHandler;
  16 import org.eclipse.core.commands.ExecutionEvent;
  17 import org.eclipse.core.commands.ExecutionException;
  18 import org.eclipse.core.commands.common.NotDefinedException;
  19 import org.eclipse.core.commands.operations.IUndoContext;
  20 import org.eclipse.core.runtime.Status;
  21 import org.eclipse.jface.dialogs.MessageDialog;
  22 import org.eclipse.jface.viewers.IStructuredSelection;
  23 import org.eclipse.jface.viewers.TreePath;
  24 import org.eclipse.jface.viewers.TreeSelection;
  25 import org.eclipse.ui.IWorkbenchPart;
  26 import org.eclipse.ui.handlers.HandlerUtil;
  27
  28 import eu.etaxonomy.cdm.api.service.config.MediaDeletionConfigurator;
  29 import eu.etaxonomy.cdm.model.description.DescriptionBase;
  30 import eu.etaxonomy.cdm.model.description.DescriptionElementBase;
  31 import eu.etaxonomy.cdm.model.description.SpecimenDescription;
  32 import eu.etaxonomy.cdm.model.description.TaxonDescription;
  33 import eu.etaxonomy.cdm.model.media.Media;
  34 import eu.etaxonomy.taxeditor.editor.EditorUtil;
  35 import eu.etaxonomy.taxeditor.editor.view.descriptive.operation.DeleteDescriptionElementOperation;
  36 import eu.etaxonomy.taxeditor.editor.view.descriptive.operation.DeleteSpecimenDescriptionOperation;
  37 import eu.etaxonomy.taxeditor.editor.view.descriptive.operation.DeleteTaxonDescriptionOperation;
  38 import eu.etaxonomy.taxeditor.editor.view.media.operation.DeleteMediaOperation;
  39 import eu.etaxonomy.taxeditor.editor.view.media.operation.RemoveImageFromDescriptionElementOperation;
  40 import eu.etaxonomy.taxeditor.model.AbstractUtility;
  41 import eu.etaxonomy.taxeditor.model.FeatureNodeContainer;
  42 import eu.etaxonomy.taxeditor.model.MessagingUtils;
  43 import eu.etaxonomy.taxeditor.operation.AbstractPostOperation;
  44 import eu.etaxonomy.taxeditor.operation.IPostOperationEnabled;
  45 import eu.etaxonomy.taxeditor.session.ICdmEntitySessionEnabled;
  46 import eu.etaxonomy.taxeditor.ui.dialog.deleteConfigurator.DeleteConfiguratorDialog;
  47
  48 /**
  49  * <p>DeleteDescriptionHandler class.</p>
  50  *
  51  * @author n.hoffmann
  52  * @created Jun 22, 2010
  53  * @version 1.0
  54  */
  55 public class DeleteHandler extends AbstractHandler {
  56
  57         /* (non-Javadoc)
  58          * @see org.eclipse.core.commands.IHandler#execute(org.eclipse.core.commands.ExecutionEvent)
  59          */
  60         /** {@inheritDoc} */
  61         @Override
  62     public Object execute(ExecutionEvent event) throws ExecutionException {
  63                 IStructuredSelection selection = (IStructuredSelection) HandlerUtil.getActiveSite(event).getSelectionProvider().getSelection();
  64
  65                 IWorkbenchPart part = HandlerUtil.getActivePart(event);
  66                 IPostOperationEnabled postOperationEnabled = (part instanceof IPostOperationEnabled) ? (IPostOperationEnabled) part : null;
  67                 ICdmEntitySessionEnabled cdmEntitySessionEnabled = (part instanceof ICdmEntitySessionEnabled) ? (ICdmEntitySessionEnabled) part : null;
  68
  69                 try {
  70                         String label = event.getCommand().getName();
  71
  72                         IUndoContext undoContext = EditorUtil.getUndoContext();
  73
  74                         List<AbstractPostOperation<?>> operations = new ArrayList<AbstractPostOperation<?>>();
  75
  76                         for(Object object : selection.toArray()){
  77
  78                                 // TaxonDescription
  79                                 if(object instanceof TaxonDescription){
  80                                         operations.add(new DeleteTaxonDescriptionOperation(label, undoContext, (TaxonDescription) object, postOperationEnabled, cdmEntitySessionEnabled));
  81                                 }
  82                                 else if(object instanceof SpecimenDescription){
  83                                     operations.add(new DeleteSpecimenDescriptionOperation(label, undoContext, (SpecimenDescription) object, postOperationEnabled, cdmEntitySessionEnabled)) ;
  84                                 }
  85                                 // DescriptionElementBase
  86                                 else if(object instanceof DescriptionElementBase){
  87                                         operations.add(new DeleteDescriptionElementOperation(label, undoContext, (DescriptionElementBase) object, postOperationEnabled, cdmEntitySessionEnabled));
  88                                 }
  89                                 else if(object instanceof FeatureNodeContainer){
  90                                         List<DescriptionElementBase> descriptions = ((FeatureNodeContainer) object).getDescriptionElementsForEntireBranch();
  91
  92                                         for(DescriptionElementBase description : descriptions){
  93                                                 operations.add(new DeleteDescriptionElementOperation(label, undoContext, description, postOperationEnabled, cdmEntitySessionEnabled));
  94                                         }
  95                                 }
  96                                 // Media
  97                                 else if(object instanceof Media){
  98                                         TreeSelection treeSelection = (TreeSelection) selection;
  99
 100                                         TreePath[] path = treeSelection.getPathsFor(object);
 101
 102                                         DescriptionBase<?> imageGallery = (DescriptionBase<?>) path[0].getFirstSegment();
 103
 104                                         // TODO use undo context specific to editor
 105                     MediaDeletionConfigurator config = new MediaDeletionConfigurator();
 106
 107                     DeleteConfiguratorDialog dialog;
 108                     dialog = new DeleteConfiguratorDialog(config, HandlerUtil.getActiveShell(event), "Confirm Deletion",  null,  "Do you really want to delete the media?", MessageDialog.WARNING, new String[] { "Delete", "Skip" }, 0);
 109                     int result_dialog= dialog.open();
 110                     if (result_dialog != Status.OK){
 111                         return null;
 112                     }
 113
 114
 115
 116                     if (config.isOnlyRemoveFromGallery()){
 117                         operations.add(new RemoveImageFromDescriptionElementOperation(label, undoContext,  (Media) object, imageGallery, postOperationEnabled));
 118                     }else{
 119                         operations.add(new DeleteMediaOperation(label, undoContext, imageGallery, (Media) object, config, postOperationEnabled));
 120                     }
 121
 122
 123
 124                                 }
 125                                 else{
 126                                         MessagingUtils.error(getClass(), "Selection is not valid for this delete handler", null);
 127                                 }
 128                         }
 129
 130                         // execute all cumulated operations
 131                         for(AbstractPostOperation<?> operation : operations){
 132                                 AbstractUtility.executeOperation(operation);
 133                         }
 134
 135                 } catch (NotDefinedException e) {
 136                         MessagingUtils.warn(getClass(), "Command name not set.");
 137                 }
 138
 139
 140                 return null;
 141         }
 142 }