function groups_ajax_widget_groups_list() {

	check_ajax_referer( 'groups_widget_groups_list' );

	switch ( $_POST['filter'] ) {
		case 'newest-groups':
			$type = 'newest';
		break;
		case 'recently-active-groups':
			$type = 'active';
		break;
		case 'popular-groups':
			$type = 'popular';
		break;
		case 'alphabetical-groups':
			$type = 'alphabetical';
		break;
	}

	$per_page = isset( $_POST['max_groups'] ) ? intval( $_POST['max_groups'] ) : 5;

	$groups_args = array(
		'user_id'  => 0,
		'type'     => $type,
		'per_page' => $per_page,
		'max'      => $per_page,
	);

	if ( bp_has_groups( $groups_args ) ) : ?>
		<?php echo "0[[SPLIT]]"; ?>
		<?php while ( bp_groups() ) : bp_the_group(); ?>
			<li <?php bp_group_class(); ?>>
				<div class="item-avatar">
					<a href="<?php bp_group_permalink() ?>"><?php bp_group_avatar_thumb() ?></a>
				</div>

				<div class="item">
					<div class="item-title"><?php bp_group_link(); ?></div>
					<div class="item-meta">
						<?php if ( 'newest-groups' === $_POST['filter'] ) : ?>
							<span class="activity" data-livestamp="<?php bp_core_iso8601_date( bp_get_group_date_created( 0, array( 'relative' => false ) ) ); ?>">
								<?php
								/* translators: %s: date */
								printf( __( 'created %s', 'buddypress' ), bp_get_group_date_created() );
								?>
							</span>
						<?php elseif ( 'popular-groups' === $_POST['filter'] ) : ?>
							<span class="activity"><?php bp_group_member_count(); ?></span>
						<?php else : ?>
							<span class="activity" data-livestamp="<?php bp_core_iso8601_date( bp_get_group_last_active( 0, array( 'relative' => false ) ) ); ?>">
								<?php
								/* translators: %s: last activity timestamp (e.g. "Active 1 hour ago") */
								printf( _x( 'Active %s', 'last time the group was active', 'buddypress' ), bp_get_group_last_active() );
								?>
							</span>
						<?php endif; ?>
					</div>
				</div>
			</li>
		<?php endwhile; ?>

		<?php wp_nonce_field( 'groups_widget_groups_list', '_wpnonce-groups' ); ?>
		<input type="hidden" name="groups_widget_max" id="groups_widget_max" value="<?php echo esc_attr( $_POST['max_groups'] ); ?>" />

	<?php else: ?>

		<?php echo "-1[[SPLIT]]<li>" . __( "No groups matched the current filter.", 'buddypress' ); ?>

	<?php endif;

}