org.simantics.district.selection.ui/src/org/simantics/district/selection/ui/handlers/DeleteElementSelector.java

   1 package org.simantics.district.selection.ui.handlers;
   2
   3 import javax.inject.Inject;
   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.ui.basic.MPart;
   9 import org.eclipse.e4.ui.workbench.IWorkbench;
  10 import org.eclipse.e4.ui.workbench.modeling.EPartService;
  11 import org.eclipse.e4.ui.workbench.modeling.ESelectionService;
  12 import org.simantics.Simantics;
  13 import org.simantics.db.WriteGraph;
  14 import org.simantics.db.common.request.WriteRequest;
  15 import org.simantics.db.exception.DatabaseException;
  16 import org.simantics.district.selection.ElementSelector;
  17 import org.simantics.district.selection.ui.parts.ElementSelectionView;
  18 import org.slf4j.Logger;
  19 import org.slf4j.LoggerFactory;
  20
  21 public class DeleteElementSelector {
  22
  23         private static final Logger LOGGER = LoggerFactory.getLogger(DeleteElementSelector.class);
  24
  25         @Inject
  26         EPartService partService;
  27
  28         @CanExecute
  29         public boolean canExecute(ESelectionService selectionService) {
  30                 MPart part = partService.getActivePart();
  31                 if (part == null) return false;
  32
  33                 Object object = part.getObject();
  34                 if (object == null || !(object instanceof ElementSelectionView))
  35                         return false;
  36
  37                 ElementSelectionView view = (ElementSelectionView)object;
  38                 return view.getSelectedItem() != null;
  39         }
  40
  41         @Execute
  42         public void editElementSelector(IEclipseContext context, IWorkbench workbench) {
  43                 MPart part = partService.getActivePart();
  44                 if (part == null) return;
  45
  46                 Object object = part.getObject();
  47                 if (object == null || !(object instanceof ElementSelectionView))
  48                         return;
  49
  50                 ElementSelectionView view = (ElementSelectionView)object;
  51                 ElementSelector selectedItem = view.getSelectedItem();
  52
  53                 if (selectedItem == null)
  54                         return;
  55
  56                 Simantics.getSession().async(new WriteRequest() {
  57                         @Override
  58                         public void perform(WriteGraph graph) throws DatabaseException {
  59                                 graph.markUndoPoint();
  60                                 graph.deny(selectedItem.getResource());
  61                         }
  62                 });
  63         }
  64 }