public void updatePropertiesPanel(final boolean force) {
   final PackagingElement<?> selected = getSelection().getElementIfSingle();
   if (!force && Comparing.equal(selected, mySelectedElementInfo.myElement)) {
     return;
   }
   mySelectedElementInfo.save();
   mySelectedElementInfo = new SelectedElementInfo<PackagingElement<?>>(selected);
   mySelectedElementInfo.showPropertiesPanel();
 }
 public void initTree() {
   myBuilder.initRootNode();
   mySelectedElementInfo.showPropertiesPanel();
 }