bundles/org.simantics.document.linking.ui/src/org/simantics/document/linking/ge/VariableImageDecorationRule.java

   1 package org.simantics.document.linking.ge;
   2
   3 import org.eclipse.jface.resource.ImageDescriptor;
   4 import org.eclipse.jface.viewers.IDecoration;
   5 import org.simantics.browsing.ui.content.ImageDecorator;
   6 import org.simantics.browsing.ui.model.imagedecorators.ImageDecorationRule;
   7 import org.simantics.db.ReadGraph;
   8 import org.simantics.db.Resource;
   9 import org.simantics.db.exception.DatabaseException;
  10 import org.simantics.db.layer0.variable.Variable;
  11 import org.simantics.document.DocumentResource;
  12 import org.simantics.document.linking.Activator;
  13 import org.simantics.document.linking.ontology.DocumentLink;
  14 import org.simantics.document.linking.utils.SourceLinkUtil;
  15 import org.simantics.utils.ui.gfx.DecorationOverlayIcon;
  16
  17 public class VariableImageDecorationRule implements ImageDecorationRule{
  18
  19         @Override
  20         public boolean isCompatible(Class<?> contentType) {
  21                 return contentType.equals(Variable.class);
  22         }
  23
  24         @Override
  25         public ImageDecorator getImageDecorator(ReadGraph graph, Object content)
  26                         throws DatabaseException {
  27                 Variable v = (Variable)content;
  28                 Resource r = v.getPossibleRepresents(graph);
  29                 if (r == null)
  30                         return null;
  31
  32                 DocumentLink sl = DocumentLink.getInstance(graph);
  33                 DocumentResource doc = DocumentResource.getInstance(graph);
  34
  35                 if (graph.isInstanceOf(r, sl.Source)) {
  36                         Resource reference = SourceLinkUtil.getReferredDocument(graph, r);
  37                         if (reference != null) {
  38                                 if (graph.hasStatement(reference,doc.HasNewerVersion))
  39                                         return new Dec(Activator.getDefault().clock_red);
  40                         } else {
  41                                 return new Dec(Activator.getDefault().cross);
  42                         }
  43                 }
  44                 return null;
  45         }
  46
  47         private class Dec implements ImageDecorator {
  48                 private ImageDescriptor decorator;
  49
  50                 public Dec(ImageDescriptor decorator) {
  51                         this.decorator = decorator;
  52                 }
  53                 @SuppressWarnings("unchecked")
  54                 public <Image extends Object> Image decorateImage(Image image, String column, int itemIndex) {
  55                         return (Image) getDecoration((ImageDescriptor) image,decorator);
  56                 };
  57         }
  58
  59         private ImageDescriptor getDecoration(ImageDescriptor original, ImageDescriptor decorator) {
  60         return (original == null) ? decorator:
  61             new DecorationOverlayIcon(original, decorator, IDecoration.BOTTOM_RIGHT);
  62     }
  63
  64 }