add filter for get_themes function

[maxaud]

Would be nice to have a filter added to the get_themes function so plugin authors can manipulate the theme information before it is passed to the page.

Example:
With the new multisite setup I'll be needing to limit certain themes viewable for certain sites and this would be the most ideal approach.

[ryan]

Note that themes can already be disabled/enabled per site via the Network admin.

[wpmuguru]

In a network environment the themes can already be filtered with the allowed_themes filter.

[maxaud]

I don't believe this is possible on a per site basis though.
When I say site, I don't mean blog.

Example:
ms-themes.php shows the themes available to that site.
What if I only want certain themes available/visible to certain sites (even to site admins)?

My reasoning:
My Multisite setup has restricted 'Site Admins' so they cannot go beyond the bounds of their 'Site'. If a user's main blog belongs on a different 'Site' they cannot edit all their details or delete them. They also cannot edit blogs that don't reside on their site. I then made it so 'Site Admins' of site_id=1 have full control over everything (how it's currently set up).

What if I want to upload a custom theme on site #1 and I don't even want site #2 to know that it's an option?

I believe this cannot be done without making a filter on the get_themes function.

example code for making a theme available to only one site:
(uses scribu's add_filter patch)

function remove_themes($wp_themes) {

	// get current site
	global $current_site;

	// set themes that are site specific by unsetting them on all other sites
	if($current_site->id != 1) {

		// unset theme from array
		unset($wp_themes['Theme Name']);
	}

	// return theme
	return $wp_themes;
}
add_filter("get_themes", "remove_themes");

[wpmuguru]

Have a look at register_theme_directory();

[maxaud]

awesome, works great. thanks for directing me to this function I didn't know existed.

I appreciate your time, not only on this but on WordPress in general.