eclipse/plugins/org.argeo.slc.client.ui.dist/src/main/java/org/argeo/slc/client/ui/dist/providers/ArtifactsTreeContentProvider.java

   1 package org.argeo.slc.client.ui.dist.providers;
   2
   3 import java.util.ArrayList;
   4 import java.util.List;
   5
   6 import javax.jcr.Node;
   7 import javax.jcr.NodeIterator;
   8 import javax.jcr.RepositoryException;
   9
  10 import org.argeo.ArgeoException;
  11 import org.eclipse.jface.viewers.ITreeContentProvider;
  12 import org.eclipse.jface.viewers.Viewer;
  13
  14 public class ArtifactsTreeContentProvider implements ITreeContentProvider {
  15         public Object[] getElements(Object parent) {
  16                 return getChildren(parent);
  17         }
  18
  19         public Object getParent(Object child) {
  20                 return null;
  21         }
  22
  23         public Object[] getChildren(Object parent) {
  24                 Object[] elements = null;
  25                 try {
  26                         if (parent instanceof Node) {
  27                                 Node node = (Node) parent;
  28                                 NodeIterator ni = node.getNodes();
  29                                 List<Node> nodesList = new ArrayList<Node>();
  30                                 while (ni.hasNext()) {
  31                                         nodesList.add(ni.nextNode());
  32                                 }
  33                                 elements = nodesList.toArray();
  34                         }
  35                 } catch (RepositoryException e) {
  36                         throw new ArgeoException(
  37                                         "Unexpected exception while listing node properties", e);
  38                 }
  39                 return elements;
  40         }
  41
  42         public boolean hasChildren(Object parent) {
  43                 try {
  44                         if (parent instanceof Node && ((Node) parent).hasNodes()) {
  45                                 return true;
  46                         }
  47                 } catch (RepositoryException e) {
  48                         throw new ArgeoException(
  49                                         "Unexpected exception while checking if property is multiple",
  50                                         e);
  51                 }
  52                 return false;
  53         }
  54
  55         public void inputChanged(Viewer viewer, Object oldInput, Object newInput) {
  56         }
  57
  58         public void dispose() {
  59         }
  60 }