eu.etaxonomy.taxeditor.store/src/main/java/eu/etaxonomy/taxeditor/security/PermissionPropertyTester.java

   1 package eu.etaxonomy.taxeditor.security;
   2
   3 import java.util.EnumSet;
   4 import java.util.List;
   5
   6 import org.eclipse.core.expressions.PropertyTester;
   7 import org.eclipse.jface.viewers.IStructuredSelection;
   8
   9 import eu.etaxonomy.cdm.model.common.CdmBase;
  10 import eu.etaxonomy.cdm.persistence.hibernate.permission.CRUD;
  11 import eu.etaxonomy.cdm.persistence.hibernate.permission.CdmAuthority;
  12 import eu.etaxonomy.taxeditor.store.CdmStore;
  13 import eu.etaxonomy.taxeditor.store.StoreUtil;
  14
  15 /**
  16  * Checks if the currently authenticated user for {@link CdmAuthority} assignments.
  17  *
  18  * @author andreas
  19  *
  20  */
  21 public class PermissionPropertyTester extends PropertyTester {
  22
  23         private static final String HAS_PERMISSIONS = "hasPermissions";
  24
  25         private static final String CREATE = CRUD.CREATE.toString();
  26         private static final String READ = CRUD.READ.toString();
  27         private static final String UPDATE = CRUD.UPDATE.toString();
  28         private static final String DELETE = CRUD.DELETE.toString();
  29
  30         @Override
  31         public boolean test(Object receiver, String property, Object[] args,
  32                         Object expectedValue) {
  33
  34                 if(property.equals(HAS_PERMISSIONS)){
  35                         return checkHasPermission(receiver, args);
  36                 }
  37
  38                 return false;
  39         }
  40
  41         private boolean checkHasPermission(Object receiver, Object[] args) {
  42                 EnumSet<CRUD> crudSet = crudSetFromArgs(args);
  43
  44
  45                 List<Object> selectedElements = ((IStructuredSelection) receiver).toList();
  46                 for(Object selectedElement : selectedElements){
  47                         if(selectedElement instanceof CdmBase && ! CdmStore.currentAuthentiationHasPermission(StoreUtil.getCdmEntity(selectedElement), crudSet)){
  48                                 return false;
  49                         }
  50                 }
  51
  52                 return true;
  53         }
  54
  55         private EnumSet<CRUD> crudSetFromArgs(Object[] args) {
  56                 EnumSet<CRUD> crudSet = EnumSet.noneOf(CRUD.class);
  57                 for(int i = 0; i < args.length; i++){
  58                         try {
  59                                 crudSet.add(CRUD.valueOf(args[i].toString()));
  60                         } catch (Exception e){
  61                                 System.err.println("could not add " + args[i]);
  62                         }
  63                 }
  64                 return crudSet;
  65         }
  66
  67 }