@Override
  public void actionPerformed(@NotNull AnActionEvent e) {
    Project project = e.getData(CommonDataKeys.PROJECT);
    if (project == null) return;
    GroupItem groupItem = e.getData(GroupItem.DATA_KEY);
    PsiFile psiFile = e.getData(CommonDataKeys.PSI_FILE);
    PsiElement elementToAdd = (psiFile != null) ? findElementToAdd(psiFile) : null;
    String className = "";
    if (elementToAdd instanceof PsiClass) {
      className = ((PsiClass)elementToAdd).getQualifiedName();
      assert className != null;
    }
    else if (elementToAdd instanceof PsiFile) {
      try {
        className = Utils.getBoundClassName(elementToAdd.getText());
      }
      catch (Exception e1) {
        className = "";
      }
    }

    // Show dialog
    final ComponentItem itemToBeAdded = new ComponentItem(
      project,
      className,
      null,
      null,
      new GridConstraints(),
      new HashMap<>(),
      true/*all user defined components are removable*/,
      false,
      false
    );
    Window parentWindow = WindowManager.getInstance().suggestParentWindow(project);
    final ComponentItemDialog dialog = new ComponentItemDialog(project, parentWindow, itemToBeAdded, false);
    dialog.setTitle(UIDesignerBundle.message("title.add.component"));
    dialog.showGroupChooser(groupItem);
    if (!dialog.showAndGet()) {
      return;
    }

    groupItem = dialog.getSelectedGroup();
    // If the itemToBeAdded is already in palette do nothing
    if (groupItem.containsItemClass(itemToBeAdded.getClassName())) {
      return;
    }

    assignDefaultIcon(project, itemToBeAdded);

    // add to the group

    final Palette palette = Palette.getInstance(project);
    palette.addItem(groupItem, itemToBeAdded);
    palette.fireGroupsChanged();
  }
@Override
  public void actionPerformed(@NotNull AnActionEvent e)