bundles/org.simantics.issues.ui/src/org/simantics/issues/ui/DynamicIssueSourceHierarchyRule.java

   1 package org.simantics.issues.ui;
   2
   3 import java.util.Collection;
   4 import java.util.Collections;
   5
   6 import org.simantics.browsing.ui.model.children.ChildRule;
   7 import org.simantics.db.ReadGraph;
   8 import org.simantics.db.exception.DatabaseException;
   9 import org.simantics.db.layer0.variable.Variable;
  10
  11 /**
  12  * @author Tuukka Lehtonen
  13  * @since 1.27
  14  */
  15 public class DynamicIssueSourceHierarchyRule implements ChildRule {
  16
  17     @Override
  18     public boolean isCompatible(Class<?> contentType) {
  19         return contentType.equals(Variable.class);
  20     }
  21
  22     @Override
  23     public Collection<?> getChildren(ReadGraph graph, Object parent) throws DatabaseException {
  24         Variable v = (Variable) parent;
  25         return v.getChildren(graph);
  26     }
  27
  28     @Override
  29     public Collection<?> getParents(ReadGraph graph, Object child) throws DatabaseException {
  30         Variable parent = ((Variable)child).getParent(graph);
  31         return parent != null ? Collections.singleton(parent) : Collections.emptyList();
  32     }
  33
  34 }