nextcloud-server/core/templates/filepicker.html

<div id="{dialog_name}" title="{title}">
	<button id="dirup">↑</button>
	<select id="dirtree"></select>
	<ul id="filelist">
		<li data-entryname="{filename}" data-type="{type}" data-dcid="{dcid}">
			<img src="{imgsrc}" />
			<span class="filename">{filename}</span>
			<span class="date">{date}</span>
		</li>
	</ul>
</div>