Ok. As noted, you can try to simply insert your HTML links in the topbar. Keep in mind, there is no room for the links on small screens, so I would recommend you hide them on small screens. There is no full advanced menu for custom pages, as Files Gallery is not a website/CMS. Below is a simple workaround solution for basic links in the topbar:
Open index.php
around line 1900
:
<div id="change-sort" class="dropdown"></div>
Add your links below the line:
<div id="change-sort" class="dropdown"></div>
<div class="mylinks">
<a href="#">Link one</a>
<a href="#">Link two</a>
</div>
Create a file _files/css/custom.css
(see CSS styling), and add:
.mylinks {
display: flex;
align-items: center;
grid-gap: 1rem;
margin-right: 1rem;
}
/* hide the custom links on screens below 992px. Can be modified */
@media (max-width: 991px) {
.mylinks {
display: none;
}
}
You can add more styles of course.