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.Arrays;
   5 import java.util.List;
   6
   7 import javax.jcr.Node;
   8 import javax.jcr.NodeIterator;
   9 import javax.jcr.RepositoryException;
  10
  11 import org.argeo.ArgeoException;
  12 import org.argeo.eclipse.ui.jcr.utils.JcrItemsComparator;
  13 import org.argeo.slc.jcr.SlcTypes;
  14 import org.eclipse.jface.viewers.ITreeContentProvider;
  15 import org.eclipse.jface.viewers.Viewer;
  16
  17 public class ArtifactsTreeContentProvider implements ITreeContentProvider,
  18                 SlcTypes {
  19
  20         // Utils
  21         private boolean sortChildren = true;
  22         private JcrItemsComparator itemComparator = new JcrItemsComparator();
  23
  24         public Object[] getElements(Object parent) {
  25                 return getChildren(parent);
  26         }
  27
  28         public Object getParent(Object child) {
  29                 return null;
  30         }
  31
  32         public Object[] getChildren(Object parent) {
  33                 Object[] elements = null;
  34                 try {
  35                         if (parent instanceof Node) {
  36                                 Node node = (Node) parent;
  37                                 NodeIterator ni = node.getNodes();
  38                                 List<Node> nodesList = new ArrayList<Node>();
  39                                 while (ni.hasNext()) {
  40                                         nodesList.add(ni.nextNode());
  41                                 }
  42                                 if (sortChildren) {
  43                                         Node[] arr = (Node[]) nodesList.toArray(new Node[nodesList
  44                                                         .size()]);
  45                                         Arrays.sort(arr, itemComparator);
  46                                         return arr;
  47                                 } else
  48                                         return nodesList.toArray();
  49
  50                         }
  51                 } catch (RepositoryException e) {
  52                         throw new ArgeoException(
  53                                         "Unexpected exception while listing node properties", e);
  54                 }
  55                 return elements;
  56         }
  57
  58         public boolean hasChildren(Object parent) {
  59                 try {
  60                         if (parent instanceof Node) {
  61                                 Node curNode = (Node) parent;
  62                                 // We manually stop digging at this level
  63                                 if (curNode.isNodeType(SLC_ARTIFACT_VERSION_BASE))
  64                                         return false;
  65                                 else if (curNode.hasNodes())
  66                                         return true;
  67                         }
  68                 } catch (RepositoryException e) {
  69                         throw new ArgeoException(
  70                                         "Unexpected exception while checking if property is multiple",
  71                                         e);
  72                 }
  73                 return false;
  74         }
  75
  76         public void setSortChildren(boolean sortChildren) {
  77                 this.sortChildren = sortChildren;
  78         }
  79
  80         public boolean getSortChildren() {
  81                 return sortChildren;
  82         }
  83
  84         public void inputChanged(Viewer viewer, Object oldInput, Object newInput) {
  85         }
  86
  87         public void dispose() {
  88         }
  89 }