bp_friends_filter_activity_just_me_scope( array $retval = array(), array $filter = array() )

function bp_friends_filter_activity_just_me_scope( $retval = array(), $filter = array() ) {

	// Determine the user_id.
	if ( ! empty( $filter['user_id'] ) ) {
		$user_id = $filter['user_id'];
	} else {
		$user_id = bp_displayed_user_id()
			? bp_displayed_user_id()
			: bp_loggedin_user_id();
	}

	// Get the requested action.
	$action = $filter['filter']['action'];

	// Make sure actions are listed in an array.
	if ( ! is_array( $action ) ) {
		$action = explode( ',', $filter['filter']['action'] );
	}

	$action = array_flip( array_filter( $action ) );

	/**
	 * If filtering activities for something other than the friendship_created
	 * action return without changing anything
	 */
	if ( ! empty( $action ) && ! isset( $action['friendship_created'] ) ) {
		return $retval;
	}

	// Juggle existing override value.
	$override = array();
	if ( ! empty( $retval['override'] ) ) {
		$override = $retval['override'];
		unset( $retval['override'] );
	}

	/**
	 * Else make sure to get the friendship_created action, the user is involved in
	 * - user initiated the friendship
	 * - user has been requested a friendship
	 */
	$retval = array(
		'relation' => 'OR',
		$retval,
		array(
			'relation' => 'AND',
			array(
				'column' => 'component',
				'value'  => 'friends',
			),
			array(
				'column' => 'secondary_item_id',
				'value'  => $user_id,
			),
		)
	);

	// Juggle back override value.
	if ( ! empty( $override ) ) {
		$retval['override'] = $override;
	}

	return $retval;
}