eu.etaxonomy.taxeditor.store/src/main/java/eu/etaxonomy/taxeditor/handler/defaultHandler/OpenReferencingObjectsViewHandler.java

   1 package eu.etaxonomy.taxeditor.handler.defaultHandler;
   2
   3 import java.util.List;
   4
   5 import javax.inject.Named;
   6
   7 import org.eclipse.e4.core.di.annotations.CanExecute;
   8 import org.eclipse.e4.core.di.annotations.Execute;
   9 import org.eclipse.e4.ui.model.application.ui.basic.MPart;
  10 import org.eclipse.e4.ui.model.application.ui.menu.MHandledMenuItem;
  11 import org.eclipse.e4.ui.services.IServiceConstants;
  12 import org.eclipse.e4.ui.workbench.modeling.EPartService;
  13 import org.eclipse.e4.ui.workbench.modeling.EPartService.PartState;
  14
  15 import eu.etaxonomy.cdm.model.common.ICdmBase;
  16 import eu.etaxonomy.cdm.persistence.dto.UuidAndTitleCache;
  17 import eu.etaxonomy.taxeditor.bulkeditor.AppModelId;
  18 import eu.etaxonomy.taxeditor.editor.IReferencingObjectsView;
  19 import eu.etaxonomy.taxeditor.view.CdmViewerUtilE4;
  20
  21 public class OpenReferencingObjectsViewHandler {
  22
  23     private List<UuidAndTitleCache<? extends ICdmBase>> selectedObjectList;
  24
  25     @Execute
  26     public void execute(EPartService partService) {
  27
  28         MPart part = partService.createPart(AppModelId.PARTDESCRIPTOR_EU_ETAXONOMY_TAXEDITOR_BULKEDITOR_REFERENCINGOBJECTS_E4_REFERENCINGOBJECTSVIEWE4);
  29         part = partService.showPart(part, PartState.ACTIVATE);
  30         IReferencingObjectsView view = (IReferencingObjectsView)part.getObject();
  31
  32         if (selectedObjectList != null && !selectedObjectList.isEmpty()) {
  33             UuidAndTitleCache<? extends ICdmBase> dto = selectedObjectList.get(0);
  34             view.handleNewSelection(dto);
  35         }
  36     }
  37
  38     @CanExecute
  39     public boolean canExecute(EPartService partService,
  40             @Named(IServiceConstants.ACTIVE_PART)MPart activePart,
  41             MHandledMenuItem menuItem) {
  42
  43         boolean canExecute = false;
  44         MPart part = partService.findPart(AppModelId.PARTDESCRIPTOR_EU_ETAXONOMY_TAXEDITOR_BULKEDITOR_REFERENCINGOBJECTS_E4_REFERENCINGOBJECTSVIEWE4);
  45         canExecute = part.equals(activePart)  //we explicitly want to allow calling the view recursively
  46                 || part.getObject() == null ;  //we show the menu item only if the view is not yet open (otherwise by setting the focus data will be shown anyway
  47                                                //but this may change in future for some data where explicitly calling the view is required
  48
  49         selectedObjectList = null;
  50         if (canExecute){
  51             String commandId = menuItem.getCommand().getElementId();
  52             Object selectedObject = menuItem.getTransientData().get(commandId+".uuid");
  53             selectedObjectList = CdmViewerUtilE4.transformSelectionToUuidAndTitleCacheList(selectedObject);
  54             canExecute = selectedObjectList.size() == 1;
  55         }
  56         menuItem.setVisible(canExecute);
  57         return canExecute;
  58     }
  59 }