eu.etaxonomy.taxeditor.store/src/main/java/eu/etaxonomy/taxeditor/handler/defaultHandler/e4/DefaultOpenHandlerBaseE4.java

   1 package eu.etaxonomy.taxeditor.handler.defaultHandler.e4;
   2
   3 import javax.inject.Named;
   4
   5 import org.eclipse.e4.core.contexts.IEclipseContext;
   6 import org.eclipse.e4.core.di.annotations.CanExecute;
   7 import org.eclipse.e4.core.di.annotations.Execute;
   8 import org.eclipse.e4.ui.model.application.MApplication;
   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.EModelService;
  13 import org.eclipse.e4.ui.workbench.modeling.EPartService;
  14 import org.eclipse.jface.viewers.IStructuredSelection;
  15 import org.eclipse.swt.widgets.Shell;
  16
  17 import eu.etaxonomy.cdm.persistence.dto.UuidAndTitleCache;
  18
  19 public abstract class DefaultOpenHandlerBaseE4 <T> {
  20
  21     protected IEclipseContext context;
  22
  23     protected MApplication application;
  24
  25     protected EModelService modelService;
  26
  27     @Execute
  28     public void execute(@Named(IServiceConstants.ACTIVE_SHELL)Shell shell, MHandledMenuItem menuItem,
  29             EModelService modelService, EPartService partService, MApplication application,
  30             IEclipseContext context) {
  31         this.context = context;
  32         this.modelService = modelService;
  33         this.application = application;
  34
  35
  36         String commandId = menuItem.getCommand().getElementId();
  37         Object transientData = menuItem.getTransientData().get(commandId+".uuid");
  38
  39         if (transientData instanceof IStructuredSelection){
  40
  41             for (Object element: ((IStructuredSelection)transientData).toArray()) {
  42                open((T)element, shell, partService);
  43             }
  44         }else if (transientData instanceof UuidAndTitleCache){
  45 //            T entity = getEntity(((UuidAndTitleCache)transientData).getUuid());
  46             open((T)transientData, shell, partService);
  47         }
  48
  49
  50     }
  51
  52     @CanExecute
  53     public boolean canExecute(MHandledMenuItem menuItem,
  54             @Named(IServiceConstants.ACTIVE_PART) MPart activePart) {
  55         boolean canExecute = false;
  56
  57         //check if same part
  58         String partId = getPartId();
  59         //check for correct entity
  60         String commandId = menuItem.getCommand().getElementId();
  61         Object transientData = menuItem.getTransientData().get(commandId+".uuid");
  62         if(transientData instanceof IStructuredSelection){
  63             canExecute = canExecute(transientData)
  64                     && (partId!=null?!partId.equals(activePart.getElementId()):true);
  65         }else if (transientData instanceof UuidAndTitleCache){
  66
  67             canExecute = canExecute(transientData)
  68                     && (partId!=null?!partId.equals(activePart.getElementId()):true);
  69         }
  70
  71         menuItem.setVisible(canExecute);
  72         return canExecute;
  73     }
  74
  75 //    protected abstract T getEntity(UUID uuid);
  76
  77     protected abstract void open(T entity, Shell shell, EPartService partService);
  78
  79     protected abstract boolean canExecute(Object entity);
  80
  81     /**
  82      * Returns the part id for the part this handler opens.<br>
  83      */
  84     protected String getPartId(){
  85         return null;
  86     }
  87
  88 }