function extra_tablenav( $which ) {

		// Bail on bottom table nav.
		if ( 'bottom' === $which ) {
			return;
		}

		// Is any filter currently selected?
		$selected = ( ! empty( $_REQUEST['activity_type'] ) ) ? $_REQUEST['activity_type'] : '';

		// Get the actions.
		$activity_actions = bp_activity_get_actions(); ?>

		<div class="alignleft actions">
			<label for="activity-type" class="screen-reader-text"><?php
				/* translators: accessibility text */
				_e( 'Filter by activity type', 'buddypress' );
			?></label>
			<select name="activity_type" id="activity-type">
				<option value="" <?php selected( ! $selected ); ?>><?php _e( 'View all actions', 'buddypress' ); ?></option>

				<?php foreach ( $activity_actions as $component => $actions ) : ?>
					<?php
					// Older avatar activity items use 'profile' for component. See r4273.
					if ( $component === 'profile' ) {
						$component = 'xprofile';
					}

					// The 'activity_update' filter is already used by the Activity component.
					if ( isset( $actions->activity_update ) && 'bp_groups_format_activity_action_group_activity_update' === $actions->activity_update['format_callback'] ) {
						unset( $actions->activity_update );
					}

					if ( bp_is_active( $component ) ) {
						if ( $component === 'xprofile' ) {
							$component_name = buddypress()->profile->name;
						} else {
							$component_name = buddypress()->$component->name;
						}

					} else {
						// Prevent warnings by other plugins if a component is disabled but the activity type has been registered.
						$component_name = ucfirst( $component );
					}
					?>

					<optgroup label="<?php echo esc_html( $component_name ); ?>">

						<?php foreach ( $actions as $action_key => $action_values ) : ?>

							<?php

							// Skip the incorrectly named pre-1.6 action.
							if ( 'friends_register_activity_action' !== $action_key  ) : ?>

								<option value="<?php echo esc_attr( $action_key ); ?>" <?php selected( $action_key,  $selected ); ?>><?php echo esc_html( $action_values[ 'value' ] ); ?></option>

							<?php endif; ?>

						<?php endforeach; ?>

					</optgroup>

				<?php endforeach; ?>

			</select>

			<?php submit_button( __( 'Filter', 'buddypress' ), 'secondary', false, false, array( 'id' => 'post-query-submit' ) ); ?>
		</div>

	<?php
	}