private void removeSelected() {
   CheckedTreeNode node = getSelectedToolNode();
   if (node != null) {
     int result =
         Messages.showYesNoDialog(
             this,
             ToolsBundle.message("tools.delete.confirmation"),
             CommonBundle.getWarningTitle(),
             Messages.getWarningIcon());
     if (result != Messages.YES) {
       return;
     }
     myIsModified = true;
     if (node.getUserObject() instanceof Tool) {
       Tool tool = (Tool) node.getUserObject();
       CheckedTreeNode parentNode = (CheckedTreeNode) node.getParent();
       ((ToolsGroup) parentNode.getUserObject()).removeElement(tool);
       removeNodeFromParent(node);
       if (parentNode.getChildCount() == 0) {
         removeNodeFromParent(parentNode);
       }
     } else if (node.getUserObject() instanceof ToolsGroup) {
       removeNodeFromParent(node);
     }
     update();
     myTree.requestFocus();
   }
 }
  private void editSelected() {
    CheckedTreeNode node = getSelectedToolNode();
    if (node != null && node.getUserObject() instanceof Tool) {
      Tool selected = (Tool) node.getUserObject();
      if (selected != null) {
        String oldGroupName = selected.getGroup();
        ToolEditorDialog dlg = createToolEditorDialog(ToolsBundle.message("tools.edit.title"));
        dlg.setData(selected, getGroups());
        dlg.show();
        if (dlg.isOK()) {
          selected.copyFrom(dlg.getData());
          String newGroupName = selected.getGroup();
          if (!Comparing.equal(oldGroupName, newGroupName)) {
            CheckedTreeNode oldGroupNode = (CheckedTreeNode) node.getParent();
            removeNodeFromParent(node);
            ((ToolsGroup) oldGroupNode.getUserObject()).removeElement(selected);
            if (oldGroupNode.getChildCount() == 0) {
              removeNodeFromParent(oldGroupNode);
            }

            insertNewTool(selected, true);
          } else {
            (getModel()).nodeChanged(node);
          }
          myIsModified = true;
          update();
        }
      }
    }
  }
  public void reset() {
    List<ToolsGroup<T>> groups = getToolsGroups();

    for (ToolsGroup group : groups) {
      insertNewGroup((ToolsGroup) group.copy());
    }

    if ((getTreeRoot()).getChildCount() > 0) {
      myTree.setSelectionInterval(0, 0);
    } else {
      myTree.getSelectionModel().clearSelection();
    }
    (getModel()).nodeStructureChanged(null);

    TreeUtil.expand(myTree, 5);

    myIsModified = false;

    update();
  }