eu.etaxonomy.taxeditor.editor/src/main/java/eu/etaxonomy/taxeditor/editor/view/descriptive/e4/handler/DeleteHandlerE4.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.e4.handler;
  11
  12 import java.util.ArrayList;
  13 import java.util.Iterator;
  14 import java.util.List;
  15
  16 import javax.inject.Named;
  17
  18 import org.eclipse.core.commands.operations.IUndoContext;
  19 import org.eclipse.e4.core.di.annotations.CanExecute;
  20 import org.eclipse.e4.core.di.annotations.Execute;
  21 import org.eclipse.e4.core.di.annotations.Optional;
  22 import org.eclipse.e4.ui.di.UISynchronize;
  23 import org.eclipse.e4.ui.model.application.ui.basic.MPart;
  24 import org.eclipse.e4.ui.model.application.ui.menu.MHandledMenuItem;
  25 import org.eclipse.e4.ui.model.application.ui.menu.MMenuItem;
  26 import org.eclipse.e4.ui.services.IServiceConstants;
  27 import org.eclipse.jface.viewers.ISelection;
  28 import org.eclipse.jface.viewers.IStructuredSelection;
  29 import org.eclipse.jface.viewers.TreeViewer;
  30 import org.eclipse.swt.widgets.Shell;
  31
  32 import eu.etaxonomy.cdm.api.service.DeleteResult;
  33 import eu.etaxonomy.cdm.api.service.IDescriptionService;
  34 import eu.etaxonomy.cdm.api.service.UpdateResult.Status;
  35 import eu.etaxonomy.cdm.model.description.DescriptionBase;
  36 import eu.etaxonomy.cdm.model.description.DescriptionElementBase;
  37 import eu.etaxonomy.cdm.model.description.SpecimenDescription;
  38 import eu.etaxonomy.cdm.model.description.TaxonDescription;
  39 import eu.etaxonomy.cdm.model.description.TaxonNameDescription;
  40 import eu.etaxonomy.cdm.model.occurrence.SpecimenOrObservationBase;
  41 import eu.etaxonomy.taxeditor.bulkeditor.e4.BulkEditorE4;
  42 import eu.etaxonomy.taxeditor.editor.EditorUtil;
  43 import eu.etaxonomy.taxeditor.editor.name.e4.TaxonNameEditorE4;
  44 import eu.etaxonomy.taxeditor.editor.view.derivate.DerivateView;
  45 import eu.etaxonomy.taxeditor.editor.view.descriptive.e4.FactualDataPartE4;
  46 import eu.etaxonomy.taxeditor.editor.view.descriptive.operation.DeleteDescriptionElementOperation;
  47 import eu.etaxonomy.taxeditor.editor.view.descriptive.operation.DeleteSpecimenDescriptionOperation;
  48 import eu.etaxonomy.taxeditor.editor.view.descriptive.operation.DeleteTaxonDescriptionOperation;
  49 import eu.etaxonomy.taxeditor.editor.view.descriptive.operation.DeleteTaxonNameDescriptionOperation;
  50 import eu.etaxonomy.taxeditor.model.FeatureNodeContainer;
  51 import eu.etaxonomy.taxeditor.model.MessagingUtils;
  52 import eu.etaxonomy.taxeditor.operation.AbstractPostOperation;
  53 import eu.etaxonomy.taxeditor.session.ICdmEntitySessionEnabled;
  54 import eu.etaxonomy.taxeditor.store.CdmStore;
  55
  56 /**
  57  *
  58  * @author pplitzner
  59  * @date 15.08.2017
  60  *
  61  */
  62 public class DeleteHandlerE4 {
  63
  64         @Execute
  65     public void execute(@Named(IServiceConstants.ACTIVE_PART) MPart activePart,
  66             @Named(IServiceConstants.ACTIVE_SHELL)Shell shell, MMenuItem menuItem,
  67             UISynchronize sync) {
  68
  69         FactualDataPartE4 factualDataPart = (FactualDataPartE4) activePart.getObject();
  70         IStructuredSelection selection = (IStructuredSelection) factualDataPart.getViewer().getSelection();
  71
  72         Object selectionProvidingPart = factualDataPart.getSelectionProvidingPart();
  73         ICdmEntitySessionEnabled cdmEntitySessionEnabled = null;
  74         if(selectionProvidingPart instanceof ICdmEntitySessionEnabled){
  75             cdmEntitySessionEnabled = (ICdmEntitySessionEnabled) selectionProvidingPart;
  76         }
  77         TreeViewer viewer = (TreeViewer)factualDataPart.getViewer();
  78         Object[] expandedElements = viewer.getExpandedElements();
  79
  80                 String label = menuItem.getLocalizedLabel();
  81
  82         IUndoContext undoContext = EditorUtil.getUndoContext();
  83
  84         List<AbstractPostOperation> operations = new ArrayList();
  85         AbstractPostOperation operation = null;
  86         for(Iterator iter = selection.iterator();iter.hasNext();){
  87             Object object = iter.next();
  88             if (object == null){
  89                 continue;
  90             }
  91             DescriptionBase description = null;
  92             SpecimenOrObservationBase specimen = null;
  93             DeleteResult result = new DeleteResult();
  94             if (object instanceof DescriptionBase){
  95                 result = CdmStore.getService(IDescriptionService.class).isDeletable(((DescriptionBase) object).getUuid());
  96                 description = (DescriptionBase) object;
  97             } else if (object instanceof DescriptionElementBase){
  98                 description = ((DescriptionElementBase)object).getInDescription();
  99             }
 100             if (result.getStatus().equals(Status.OK)){
 101                 List<Object> expandedElementsList = new ArrayList<>();
 102
 103                 for (Object o: expandedElements){
 104                     if(!o.equals(object)){
 105                         expandedElementsList.add(o);
 106                     }
 107                 }
 108                 expandedElements = expandedElementsList.toArray();
 109                 // TaxonDescription
 110                 if(object instanceof TaxonDescription ){
 111
 112                         operation = new DeleteTaxonDescriptionOperation(label, undoContext, (TaxonDescription) object, factualDataPart, cdmEntitySessionEnabled);
 113
 114                         ((TaxonDescription) object).getTaxon().removeDescription((TaxonDescription) object);
 115
 116
 117                 } else if(object instanceof TaxonNameDescription ){
 118                     operation = new DeleteTaxonNameDescriptionOperation(label, undoContext, (TaxonNameDescription) object, factualDataPart, cdmEntitySessionEnabled);
 119
 120                     ((TaxonNameDescription) object).getTaxonName().removeDescription((TaxonNameDescription) object);
 121
 122                 } else if(object instanceof SpecimenDescription){
 123                     operation = new DeleteSpecimenDescriptionOperation(label, undoContext, (SpecimenDescription) object, factualDataPart, cdmEntitySessionEnabled);
 124                     specimen = ((SpecimenDescription) object).getDescribedSpecimenOrObservation();
 125                     specimen.removeDescription((SpecimenDescription) object);
 126
 127                 } else if(object instanceof DescriptionElementBase){
 128                     // DescriptionElementBase
 129                     operation = new DeleteDescriptionElementOperation(label, undoContext, (DescriptionElementBase) object, factualDataPart, cdmEntitySessionEnabled);
 130                     ((DescriptionElementBase) object).getInDescription().removeElement((DescriptionElementBase) object);
 131                 } else if(object instanceof FeatureNodeContainer){
 132                     List<DescriptionElementBase> descriptions = ((FeatureNodeContainer) object).getDescriptionElementsForEntireBranch();
 133
 134                     for(DescriptionElementBase descriptionElement : descriptions){
 135                         operation = new DeleteDescriptionElementOperation(label, undoContext, descriptionElement, factualDataPart, cdmEntitySessionEnabled);
 136                     }
 137                     ((FeatureNodeContainer)object).getContainerTree().removeContainer((FeatureNodeContainer)object);
 138
 139
 140                 }
 141
 142
 143                 if (factualDataPart.getSelectionProvidingPart().getObject() instanceof TaxonNameEditorE4){
 144                     ((TaxonNameEditorE4)factualDataPart.getSelectionProvidingPart().getObject()).getEditorInput().addOperation(operation);
 145                     ((TaxonNameEditorE4)factualDataPart.getSelectionProvidingPart().getObject()).setDirty();
 146                     ((TaxonNameEditorE4)factualDataPart.getSelectionProvidingPart().getObject()).redraw();
 147                 }
 148                 if (factualDataPart.getSelectionProvidingPart().getObject() instanceof DerivateView){
 149                     ((DerivateView)factualDataPart.getSelectionProvidingPart().getObject()).addOperation(operation);
 150                     ((DerivateView)factualDataPart.getSelectionProvidingPart().getObject()).setDirty(true);
 151
 152                     if (object instanceof DescriptionBase){
 153                         factualDataPart.getViewer().refresh();
 154                         factualDataPart.collapse();
 155                     } else if (object instanceof DescriptionElementBase){
 156                         if (description != null){
 157                             factualDataPart.changed(description);
 158                         }
 159                     }
 160                 }
 161                 if (factualDataPart.getSelectionProvidingPart().getObject() instanceof BulkEditorE4){
 162                     ((BulkEditorE4)factualDataPart.getSelectionProvidingPart().getObject()).addOperation(operation);
 163                     ((BulkEditorE4)factualDataPart.getSelectionProvidingPart().getObject()).setDirty(true);
 164                     if (object instanceof SpecimenDescription){
 165                         ((BulkEditorE4)factualDataPart.getSelectionProvidingPart().getObject()).changed(((SpecimenDescription)object).getDescribedSpecimenOrObservation());
 166                     }else if (object instanceof TaxonDescription){
 167                         ((BulkEditorE4)factualDataPart.getSelectionProvidingPart().getObject()).changed(((TaxonDescription)object).getTaxon());
 168                     }else if (object instanceof TaxonNameDescription){
 169                         ((BulkEditorE4)factualDataPart.getSelectionProvidingPart().getObject()).changed(((TaxonNameDescription)object).getTaxonName());
 170                     }
 171                 }
 172                 viewer.refresh();
 173
 174                 if (expandedElements.length>0){
 175                     for (Object o: expandedElements){
 176                         if (o instanceof FeatureNodeContainer && object instanceof DescriptionElementBase){
 177                             FeatureNodeContainer container = (FeatureNodeContainer)o;
 178                             if (container.getDescriptionElements().contains(object)){
 179                                 container.getDescriptionElements().remove(object);
 180                                 break;
 181                             }
 182                         }
 183                     }
 184
 185                     viewer.setExpandedElements(expandedElements);
 186                 }
 187             }
 188             else{
 189                 Exception e = result.getExceptions() != null && !result.getExceptions().isEmpty()? result.getExceptions().iterator().next() : null;
 190
 191                 MessagingUtils.informationDialog("Delete not possible", e.getMessage());
 192                 break;
 193
 194             }
 195
 196         }
 197
 198
 199
 200         }
 201
 202
 203     @CanExecute
 204     public boolean canExecute(@Optional @Named(IServiceConstants.ACTIVE_PART) MPart activePart,
 205             MHandledMenuItem menuItem){
 206         FactualDataPartE4 factualDataPart = (FactualDataPartE4) activePart.getObject();
 207         ISelection selection = factualDataPart.getViewer().getSelection();
 208         boolean canExecute = true;
 209         if (selection instanceof IStructuredSelection && !selection.isEmpty()){
 210             IStructuredSelection sel = (IStructuredSelection) selection;
 211             if (sel.getFirstElement() instanceof FeatureNodeContainer){
 212                 canExecute = false;
 213             }
 214
 215         }
 216         canExecute &= selection instanceof IStructuredSelection && !selection.isEmpty() && !(((IStructuredSelection)selection).getFirstElement() instanceof FeatureNodeContainer);
 217
 218         menuItem.setVisible(canExecute);
 219         return canExecute;
 220     }
 221 }