Do you mean you want to expand the new Media Manager (WP 3.5) pop-up menu? Just to be clear, this article is about expanding the Media Library screen (i.e. the page we go to when we click on the Media link from our dashboard). It is not about the media manager pop-up menu.

However, media manager menu expansions is something that I want to do as well, but I haven’t had the time to look into it yet. Based on what I have seen, my guess is that it will be a non-trivial process.

I’m hoping to customize the Attachment Display Settings Link To drop-down menu to add a custom option. Where my posts/pages have pdfs for download I’m trying to get them all to include a download icon and the file size next to the anchor text. So that the site’s admin (who has no coding capability) will be able to simply select their pdf from the Media Library, choose my custom setting in the Link To menu, and the link would appear in the content with the css and the metadata required.

Is that feasible? Does your plugin do it better? Any input or direction would be a tremendous help.

Thanks!

Check out the filters-
attachment_fields_to_edit and attachment_fields_to_save.

There is an example of how I use them in my Shiba Media Library Plugin. I use them to add a new tags input field to the Edit Media screen. Look in the main shiba-media-library.php file for the filters.

Thanks, Shawn