'Setup list widget content.'

def setup(self):

    if (len(self.plugins_tabs) == 0):
        self.close()
        return
    self.list.clear()
    current_path = self.current_path
    filter_text = self.filter_text
    trying_for_symbol = ('@' in self.filter_text)
    if trying_for_symbol:
        self.mode = self.SYMBOL_MODE
        self.setup_symbol_list(filter_text, current_path)
    else:
        self.mode = self.FILE_MODE
        self.setup_file_list(filter_text, current_path)
    self.set_dialog_position()
