bp_get_group_class( array $classes = array() )

	function bp_get_group_class( $classes = array() ) {
		global $groups_template;

		// Add even/odd classes, but only if there's more than 1 group.
		if ( $groups_template->group_count > 1 ) {
			$pos_in_loop = (int) $groups_template->current_group;
			$classes[]   = ( $pos_in_loop % 2 ) ? 'even' : 'odd';

		// If we've only one group in the loop, don't bother with odd and even.
		} else {
			$classes[] = 'bp-single-group';
		}

		// Group type - public, private, hidden.
		$classes[] = sanitize_key( $groups_template->group->status );

		// Add current group types.
		if ( $group_types = bp_groups_get_group_type( bp_get_group_id(), false ) ) {
			foreach ( $group_types as $group_type ) {
				$classes[] = sprintf( 'group-type-%s', esc_attr( $group_type ) );
			}
		}

		// User's group role.
		if ( bp_is_user_active() ) {

			// Admin.
			if ( bp_group_is_admin() ) {
				$classes[] = 'is-admin';
			}

			// Moderator.
			if ( bp_group_is_mod() ) {
				$classes[] = 'is-mod';
			}

			// Member.
			if ( bp_group_is_member() ) {
				$classes[] = 'is-member';
			}
		}

		// Whether a group avatar will appear.
		if ( bp_disable_group_avatar_uploads() || ! buddypress()->avatar->show_avatars ) {
			$classes[] = 'group-no-avatar';
		} else {
			$classes[] = 'group-has-avatar';
		}

		/**
		 * Filters classes that will be applied to row class of the current group in the loop.
		 *
		 * @since BuddyPress 1.7.0
		 *
		 * @param array $classes Array of determined classes for the row.
		 */
		$classes = apply_filters( 'bp_get_group_class', $classes );
		$classes = array_merge( $classes, array() );
		$retval = 'class="' . join( ' ', $classes ) . '"';

		return $retval;
	}