code: private void doSearch()
      {
          setSearchPanelVisible(true);
          String selectedText = textComponent.getSelectedText();
          if (selectedText != null)
          {
              searchPanel.setQuery(selectedText);
          }
          searchPanel.requestFocusForTextField();
      }
docs: Called to initiate the search. Will show the search panel, and
  set the currently selected text as the query