{foreach from = $item->multiRowHeaderColumns item = columns}
<tr>
{if $item->hasRowPreview}<th id="{$item->attribs.id}-th-preview"></th>{/if}
{foreach from = $columns item = column key = name}
<th id = "{$item->attribs.id}-th-{$name}" {$column.headerAttribs|@html_render_attribs}>
{capture assign='columnContent'}
    {if $column.headerTemplate}
        {include file=$column.headerTemplate}
    {else}
        {$column.title}
    {/if}
{/capture}
{if 'checkbox' === $column.type}<input type="checkbox" />{/if}
    {if $column.orderBy}
        {capture assign = 'href'}{$item->sortLink}orderBy={$column.orderBy}{if $item->orderBy == $column.orderBy}+DESC{/if}{/capture}
        <a href="{$href|htmlspecialchars}" title="Click to sort list by {$column.title|strip_tags} {if $item->orderBy == $column.orderBy}in descending order{else}in ascending order{/if}">
            {$columnContent}
        </a>
        {assign var = 'order' value = $item->orderBy}
        {if is_array($order)}
            {assign var = 'order' value = $order|@current}
        {/if}
        {if preg_match("/^`$column.orderBy`( DESC)?$/", $order)}
            {capture assign = 'href'}{$item->sortLink}orderBy={$column.orderBy}{if $order == $column.orderBy}+DESC{/if}{/capture}
            <a href="{$href|htmlspecialchars}" title="Click to sort list by {$column.title|strip_tags} {if $item->orderBy == $column.orderBy}in descending order{else}in ascending order{/if}">
                <i class="fa fa-arrow-{if preg_match("/ DESC$/", $order)}up{else}down{/if}"></i>
            </a>
        {/if}
    {else}
        {$columnContent}
    {/if}
</th>
{/foreach}
</tr>
{/foreach}