We need a way to stop end users uploading images through the image manager that have certain characters in the file name. If a user uploads a file named with spaces or special characters it's a nightmare for our application to deal with it, so we want to prevent the problem at the root cause.
Is there a way to do this? Can the file browser filter out these files or is there some validation event we can use before the upload begins?
I think the FileBrowserContentProvider *may* be want but I only need to override the default behaviour in one place rather than do a completely custom implementation.
Any advice much appreciated.