Admin – Add custom display() function for posts list

Hi all,

I’m trying to customize the posts lists in the admin panel without modify the default scripts.

I found the edit.php (wordpress\wp-admin\edit.php) and i found the line “<?php $wp_list_table->display(); ?>” this line render the posts list and is rendered from the class WP_Posts_List_Table (this class extends from WP_List_Table).

I tried this but doesn’t work:

class foo
{
  function __construct() 
  {
    add_action('WP_Posts_List_Table',array( $this, 'AdminDisplayCustomTable'));
  }

  public function display() 
  {
    echo 'TESTTT';

    $singular = $this->_args['singular'];

    //$this->display_tablenav( 'top' );

    $this->screen->render_screen_reader_content( 'heading_list' );
    ?>
    <table class="wp-list-table <?php echo implode( ' ', $this->get_table_classes() ); ?>">
      <thead>
      <tr>
        <?php $this->print_column_headers(); ?>
      </tr>
      </thead>

      <tbody id="the-list"<?php
        if ( $singular ) {
          echo " data-wp-lists='list:$singular'";
        } ?>>
        <?php $this->display_rows_or_placeholder(); ?>
      </tbody>

      <tfoot>
      <tr>
        <?php $this->print_column_headers( false ); ?>
      </tr>
      </tfoot>

    </table>
    <?php
    $this->display_tablenav( 'bottom' );
  }
}
$foo = new foo();

My question is: Have any way to add a custom funcion display() from a plugin script? and how can do this?

Regards.-