eu.etaxonomy.taxeditor.navigation/src/main/java/eu/etaxonomy/taxeditor/navigation/navigator/e4/handler/RemotingChangeAcceptedTaxonToSynonymHandlerE4.java

   1 /**
   2  *
   3  */
   4 package eu.etaxonomy.taxeditor.navigation.navigator.e4.handler;
   5
   6 import java.util.ArrayList;
   7 import java.util.List;
   8 import java.util.UUID;
   9
  10 import javax.inject.Named;
  11
  12 import org.eclipse.core.commands.operations.AbstractOperation;
  13 import org.eclipse.core.runtime.IStatus;
  14 import org.eclipse.core.runtime.Status;
  15 import org.eclipse.e4.core.di.annotations.CanExecute;
  16 import org.eclipse.e4.ui.model.application.ui.basic.MPart;
  17 import org.eclipse.e4.ui.model.application.ui.menu.MHandledMenuItem;
  18 import org.eclipse.e4.ui.services.IServiceConstants;
  19 import org.eclipse.jface.viewers.IStructuredSelection;
  20 import org.eclipse.jface.viewers.TreeSelection;
  21 import org.eclipse.swt.widgets.Shell;
  22
  23 import eu.etaxonomy.cdm.api.conversation.ConversationHolderMock;
  24 import eu.etaxonomy.cdm.model.taxon.TaxonNode;
  25 import eu.etaxonomy.taxeditor.editor.EditorUtil;
  26 import eu.etaxonomy.taxeditor.navigation.l10n.Messages;
  27 import eu.etaxonomy.taxeditor.navigation.navigator.TaxonNavigatorLabels;
  28 import eu.etaxonomy.taxeditor.navigation.navigator.operation.RemotingChangeAcceptedTaxonToSynonymOperation;
  29 import eu.etaxonomy.taxeditor.operation.e4.RemotingCdmHandlerE4;
  30 import eu.etaxonomy.taxeditor.ui.dialog.selection.TaxonNodeSelectionDialog;
  31
  32 /**
  33  *
  34  * @author pplitzner
  35  * @since Sep 6, 2017
  36  *
  37  */
  38 public class RemotingChangeAcceptedTaxonToSynonymHandlerE4 extends RemotingCdmHandlerE4 {
  39
  40
  41     private TaxonNode oldTaxonNode;
  42
  43     public RemotingChangeAcceptedTaxonToSynonymHandlerE4() {
  44         super(TaxonNavigatorLabels.CHANGE_ACCEPTED_TAXON_TO_SYNONYM_LABEL);
  45     }
  46
  47     @Override
  48     public IStatus allowOperations(IStructuredSelection selection,
  49             Shell shell,
  50             MPart activePart,
  51             MHandledMenuItem menuItem) {
  52         // check that only a single taxon tree node has been selected
  53         if(selection.size() > 1) {
  54             return new Status(IStatus.ERROR,
  55                     "unknown", //$NON-NLS-1$
  56                     TaxonNavigatorLabels.SINGLE_TAXON_SELECTION_MESSAGE);
  57         }
  58
  59         // check for no taxon tree node selected
  60         if(selection.size() == 0) {
  61             return new Status(IStatus.ERROR,
  62                     "unknown", //$NON-NLS-1$
  63                     TaxonNavigatorLabels.NO_TAXON_SELECTION_MESSAGE);
  64         }
  65
  66         // check that selected object is a taxon node
  67         Object obj = selection.iterator().next();
  68         if(obj instanceof TaxonNode && ((TaxonNode)obj).hasTaxon()) {
  69             oldTaxonNode = (TaxonNode)obj;
  70         } else {
  71                 if (obj instanceof TaxonNode && !((TaxonNode)obj).hasTaxon()){
  72                         return new Status(IStatus.ERROR,
  73                         "Operation not available for Classifications", //$NON-NLS-1$
  74                         TaxonNavigatorLabels.SELECTED_OBJECT_NOT_TREE_NODE_MESSAGE);
  75                 }
  76             return new Status(IStatus.ERROR,
  77                     "unknown", //$NON-NLS-1$
  78                     TaxonNavigatorLabels.SELECTED_OBJECT_NOT_TREE_NODE_MESSAGE);
  79         }
  80         // check that the source taxon node does not have children
  81         if(oldTaxonNode.getCountChildren() > 0) {
  82             return new Status(IStatus.ERROR,
  83                     "unknown", //$NON-NLS-1$
  84                     TaxonNavigatorLabels.SOURCE_TAXON_HAS_CHILDREN_MESSAGE);
  85
  86         }
  87
  88         // check if corresponding name editor is closed
  89         EditorUtil.closeObsoleteEditor(oldTaxonNode, partService);
  90
  91         return Status.OK_STATUS;
  92     }
  93
  94     @Override
  95     public AbstractOperation prepareOperation(IStructuredSelection selection,
  96             Shell shell,
  97             MPart activePart,
  98             MHandledMenuItem menuItem) {
  99         List<UUID> excludeTaxa = new ArrayList<UUID>();
 100         excludeTaxa.add(oldTaxonNode.getTaxon().getUuid());
 101         TaxonNode newAcceptedTaxonNode = TaxonNodeSelectionDialog.select(shell,
 102                 new ConversationHolderMock(),
 103                 Messages.RemotingChangeAcceptedTaxonToSynonymHandler_CHOOSE_TAXON,
 104                 excludeTaxa,
 105                 oldTaxonNode,
 106                 oldTaxonNode.getClassification());
 107
 108         if (newAcceptedTaxonNode == null) {
 109             return null;
 110         }
 111
 112         RemotingChangeAcceptedTaxonToSynonymOperation rcattso =
 113                 new RemotingChangeAcceptedTaxonToSynonymOperation(getTrigger(),
 114                         false,
 115                         oldTaxonNode.getUuid(),
 116                         newAcceptedTaxonNode.getUuid());
 117
 118         return rcattso;
 119     }
 120
 121     @CanExecute
 122     private boolean canExecute(@Named(IServiceConstants.ACTIVE_SELECTION)TreeSelection selection, MHandledMenuItem menuItem){
 123         boolean canExecute = false;
 124         canExecute = selection.getFirstElement() instanceof TaxonNode
 125                 && ((TaxonNode) selection.getFirstElement()).getTaxon()!=null;
 126         menuItem.setVisible(canExecute);
 127         return canExecute;
 128     }
 129
 130     @Override
 131     public void onComplete() {
 132     }
 133
 134     /**
 135      * {@inheritDoc}
 136      */
 137     @Override
 138     protected Object getTrigger() {
 139         return this;
 140     }
 141 }