bundles/org.simantics.document.ui/src/org/simantics/document/ui/contribution/NameInputValidator.java

   1 package org.simantics.document.ui.contribution;
   2
   3 import java.util.Collection;
   4
   5 import org.eclipse.jface.dialogs.IInputValidator;
   6 import org.eclipse.osgi.util.NLS;
   7 import org.simantics.Simantics;
   8 import org.simantics.browsing.ui.swt.widgets.impl.Widget;
   9 import org.simantics.db.ReadGraph;
  10 import org.simantics.db.Resource;
  11 import org.simantics.db.exception.DatabaseException;
  12 import org.simantics.db.management.ISessionContext;
  13 import org.simantics.db.request.Read;
  14 import org.simantics.layer0.Layer0;
  15 import org.simantics.utils.ui.AdaptionUtils;
  16
  17 public class NameInputValidator implements IInputValidator, Widget {
  18
  19         private Resource selection;
  20
  21         @Override
  22         public String isValid(final String newText) {
  23                 if (newText == null || newText.length() == 0)
  24                         return Messages.NameInputValidator_EmptyNameNotAllowed;
  25                 if (selection != null) {
  26                         try {
  27                                 return Simantics.getSession().syncRequest(new Read<String>() {
  28                                         @Override
  29                                         public String perform(ReadGraph graph) throws DatabaseException {
  30                                                 Layer0 l0 = Layer0.getInstance(graph);
  31                                                 Resource lib = graph.getPossibleObject(selection, l0.PartOf);
  32                                                 if (lib == null)
  33                                                         return null;
  34                                                 Collection<Resource> resources = graph.getObjects(lib, l0.ConsistsOf);
  35                                                 for (Resource resource : resources) {
  36                                                         if (resource.equals(selection))
  37                                                                 continue;
  38                                                         String n = graph.getPossibleRelatedValue(resource, l0.HasName);
  39                                                         if (newText.equals(n))
  40                                                                 return NLS.bind(Messages.NameInputValidator_CannotHaveDuplicateName, newText);
  41                                                 }
  42                                                 return null;
  43                                         }
  44                                 });
  45                         } catch (DatabaseException e) {
  46                                 return e.getMessage();
  47                         }
  48                 }
  49                 return null;
  50         }
  51
  52         @Override
  53         public void setInput(ISessionContext context, Object input) {
  54                 selection = AdaptionUtils.adaptToSingle(input, Resource.class);
  55
  56         }
  57
  58 }