eu.etaxonomy.taxeditor.editor/src/main/java/eu/etaxonomy/taxeditor/editor/view/descriptive/e4/handler/CreateDescriptionElementHandlerE4.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.UUID;
  13
  14 import javax.inject.Named;
  15
  16 import org.eclipse.e4.core.di.annotations.CanExecute;
  17 import org.eclipse.e4.core.di.annotations.Execute;
  18 import org.eclipse.e4.core.di.annotations.Optional;
  19 import org.eclipse.e4.ui.di.UISynchronize;
  20 import org.eclipse.e4.ui.model.application.ui.basic.MPart;
  21 import org.eclipse.e4.ui.model.application.ui.menu.MHandledMenuItem;
  22 import org.eclipse.e4.ui.services.IServiceConstants;
  23 import org.eclipse.jface.viewers.IStructuredSelection;
  24
  25 import eu.etaxonomy.cdm.api.service.ITermService;
  26 import eu.etaxonomy.cdm.hibernate.HibernateProxyHelper;
  27 import eu.etaxonomy.cdm.model.description.DescriptionBase;
  28 import eu.etaxonomy.cdm.model.description.DescriptionElementBase;
  29 import eu.etaxonomy.cdm.model.description.Feature;
  30 import eu.etaxonomy.taxeditor.editor.EditorUtil;
  31 import eu.etaxonomy.taxeditor.editor.view.descriptive.e4.FactualDataPartE4;
  32 import eu.etaxonomy.taxeditor.editor.view.descriptive.operation.CreateDescriptionElementOperation;
  33 import eu.etaxonomy.taxeditor.model.AbstractUtility;
  34 import eu.etaxonomy.taxeditor.model.FeatureNodeContainer;
  35 import eu.etaxonomy.taxeditor.model.MessagingUtils;
  36 import eu.etaxonomy.taxeditor.operation.AbstractPostOperation;
  37 import eu.etaxonomy.taxeditor.operation.IPostOperationEnabled;
  38 import eu.etaxonomy.taxeditor.store.CdmStore;
  39
  40 /**
  41  *
  42  * @author pplitzner
  43  * @date 15.08.2017
  44  *
  45  */
  46 public class CreateDescriptionElementHandlerE4 {
  47
  48     @Execute
  49     public void execute(@Named(IServiceConstants.ACTIVE_PART) MPart activePart,
  50             @Optional@Named(IServiceConstants.ACTIVE_SELECTION) IStructuredSelection selection,
  51             MHandledMenuItem menuItem,
  52             UISynchronize sync) {
  53
  54         String commandId = menuItem.getCommand().getElementId();
  55         UUID uuid = (UUID) menuItem.getTransientData().get(commandId+".feature.uuid");
  56         Feature feature = HibernateProxyHelper.deproxy(CdmStore.getService(ITermService.class).load(uuid), Feature.class);
  57
  58         FactualDataPartE4 factualDataPart = (FactualDataPartE4) activePart.getObject();
  59
  60         DescriptionBase description = null;
  61         Object object = selection.getFirstElement();
  62         if(object instanceof FeatureNodeContainer){
  63             description = ((FeatureNodeContainer) object).getDescription();
  64         }
  65         else if(object instanceof DescriptionElementBase){
  66             DescriptionElementBase elementBase = HibernateProxyHelper.deproxy(object, DescriptionElementBase.class);
  67             description = elementBase.getInDescription();
  68         }
  69         else if (object instanceof DescriptionBase) {
  70             description = HibernateProxyHelper.deproxy(object, DescriptionBase.class);
  71         } else {
  72             MessagingUtils.error(getClass(), new IllegalArgumentException("Could not determine the taxon description")); //$NON-NLS-1$
  73             return;
  74         }
  75         AbstractPostOperation operation = operationCreationInstance(menuItem.getLocalizedLabel(), feature, description,
  76                 factualDataPart);
  77         // TODO use undo context specific to editor
  78         AbstractUtility.executeOperation(operation, sync);
  79     }
  80
  81     @CanExecute
  82     public boolean canExecute(MHandledMenuItem menuItem,
  83             @Named(IServiceConstants.ACTIVE_SELECTION)IStructuredSelection selection){
  84         boolean canExecute = false;
  85         canExecute = selection.size()==1
  86                 &&
  87                 (selection.getFirstElement() instanceof DescriptionBase
  88                 || selection.getFirstElement() instanceof DescriptionElementBase
  89                 || selection.getFirstElement() instanceof FeatureNodeContainer);
  90         menuItem.setVisible(canExecute);
  91         return canExecute;
  92
  93     }
  94
  95     /**
  96          * Added to make the Class more generic and limit the amount of code changes required
  97          * @param label
  98          * @param event
  99          * @param taxon
 100          * @param description
 101          * @param postOperationEnabled
 102          * @return
 103          */
 104     protected AbstractPostOperation operationCreationInstance(String label, Feature feature,
 105             DescriptionBase<?> description, IPostOperationEnabled postOperationEnabled) {
 106         return new CreateDescriptionElementOperation(label, EditorUtil.getUndoContext(), description, feature,
 107                 postOperationEnabled);
 108     }
 109
 110 }