question_dialog (Editor)

        # File lib/json/editor.rb, line 69
    69:     def Editor.question_dialog(window, text)
    70:       dialog = MessageDialog.new(window, Dialog::MODAL,
    71:         MessageDialog::QUESTION,
    72:         MessageDialog::BUTTONS_YES_NO, text)
    73:       dialog.show_all
    74:       dialog.run do |response|
    75:         return Gtk::Dialog::RESPONSE_YES === response
    76:       end
    77:     ensure
    78:       dialog.destroy if dialog
    79:     end