Previously we'd hide the "execution" region (containing the Save
Preferences button) when the header is visible, which would contain the
button instead. It was possible to unhide it, which made it behave
glitchy. Now it reliably "removes" is and brings it back when needed
(it's not really removed, only from what the user can tell).
Progress bar display the file reading (and other operations) is actually
broken in master for a while, so this won't actually be reported. Still
calculate it for once it's fixed.
Loading the asset library will create a read-only catalog service. The
read-only nature is not dealt with much in the asset catalog code, the
using code (e.g. the UI) is responsible for respecting it.
Merges the catalog definitions from all asset libraries in to the
storage of the "All" one, builds the catalog tree and refreshes data as
needed. This doesn't allow writing changes back to the catalog
definition files, so the UI probably shouldn't allow edits.
Together with the changes made in master, all this does is making sure
the assets are loaded and removed using the correct asset library nested
within the "All" library. Now full paths for the assets can be built
correctly from the asset identifier, which fixes preview loading and
drag & drop.
Now it actually loads data from all asset libraries when this is
selected. The asset representations still need to be loaded by the file
browser backend, this won't change for now.
This adds the concept of nested asset libraries, which I'd prefer to
keep as implementation detail and not expose in the API. But for now
it's needed (for the asset representation loading by the file browser
backend).
An "All" asset library can be selected in the Asset Browser and asset
view templates now, and that will load all assets from all asset
libraries. Preview loading, drag & drop and asset catalogs don't work
yet.
Julian Eisel