Lights suitable for a glass roof

[ICantFindAFreeNickName2]

We are having an extension done, which will have a glass roof. I saw some lights I liked In a restaurant the other day but don't know where I can buy then, can you guys help
The lights were two cables run from wall to wall, with several lights along the length, that looked like they could be moved along the cable to shine on whatever artwork or piece of furniture you want to highlight. in my case it will be the (washing basket or recycling bins). Any idea where I can buy something like this ?

I would go back to the restaurant and take a photo, then post it to see if anybody can help.

Unfortunately its about 150miles from where I live 7 I wont be back there for a while.

Do you mean cable lighting like this ?

Googling Cable lighting will bring up more types.

Thank Nemno they are just the sort of lights I meant. I did try searching before I posted, but I only found the cable 'fairy lights'.