AbstractJcrBrowser.java

   1 package org.argeo.eclipse.ui.jcr.views;
   2
   3 import javax.jcr.Node;
   4
   5 import org.eclipse.jface.viewers.IStructuredSelection;
   6 import org.eclipse.jface.viewers.ITreeContentProvider;
   7 import org.eclipse.jface.viewers.StructuredSelection;
   8 import org.eclipse.jface.viewers.TreeViewer;
   9 import org.eclipse.swt.widgets.Composite;
  10 import org.eclipse.ui.part.ViewPart;
  11
  12 public abstract class AbstractJcrBrowser extends ViewPart {
  13
  14         @Override
  15         public abstract void createPartControl(Composite parent);
  16
  17         /**
  18          * To be overridden to adapt size of form and result frames.
  19          */
  20         abstract protected int[] getWeights();
  21
  22         /**
  23          * To be overridden to provide an adapted size nodeViewer
  24          */
  25         abstract protected TreeViewer createNodeViewer(Composite parent,
  26                         ITreeContentProvider nodeContentProvider);
  27
  28         /**
  29          * To be overridden to retrieve the current nodeViewer
  30          */
  31         abstract protected TreeViewer getNodeViewer();
  32
  33         /*
  34          * Enables the refresh of the tree.
  35          */
  36         @Override
  37         public void setFocus() {
  38                 getNodeViewer().getTree().setFocus();
  39         }
  40
  41         public void refresh(Object obj) {
  42                 // getNodeViewer().update(obj, null);
  43                 getNodeViewer().refresh(obj);
  44                 // getNodeViewer().expandToLevel(obj, 1);
  45         }
  46
  47         public void nodeAdded(Node parentNode, Node newNode) {
  48                 getNodeViewer().refresh(parentNode);
  49                 getNodeViewer().expandToLevel(newNode, 0);
  50         }
  51
  52         public void nodeRemoved(Node parentNode) {
  53                 IStructuredSelection newSel = new StructuredSelection(parentNode);
  54                 getNodeViewer().setSelection(newSel, true);
  55                 // Force refresh
  56                 IStructuredSelection tmpSel = (IStructuredSelection) getNodeViewer()
  57                                 .getSelection();
  58                 getNodeViewer().refresh(tmpSel.getFirstElement());
  59         }
  60 }