navigation - being able to specify a function for 'screen_function' which is inside a class

[grosbouff]

For bp_core_new_subnav_item; etc;
for the arguement 'screen_function', there should be a way to define a function contained inside a class;

like :

'screen_function' => array(&$this, 'screen')

[apeatling]

This is already possible:

		if ( !is_object($screen_function[0]) )
			add_action( 'wp', $screen_function, 3 );
		else
			add_action( 'wp', array( &$screen_function[0], $screen_function[1] ), 3 );