Apply label to empty folders

I'm new to Hazel so I'm having trouble creating this:

I want Hazel to monitor my entire Dropbox folder (including all subfolders), and apply a label to any folder that is empty. I don't want to delete it, just to easily tell it apart.

I think I'm getting tripped up on getting it to properly go into subfolders, because I've manage to get the first-level folders to be labelled (I'm assuming because they have an empty folder somewhere in their sub-folders...), but nothing else.

Thanks for any help.

Three rules will solve the problem you've presented:

Code: Select all: Rule 1: Label Empties If (All) of the following are true ... Kind is Folder Size is 0 bytes Then Set color label to _______

Code: Select all: Rule 2: Un-Label Full If (All) of the following are true ... Kind is Folder Size is greater than 0 bytes Then Set color label to BLANK

Code: Select all: Rule 3: Dive into Subfolders If (All) of the following are true ... Kind is Folder Then Run rules on folder contents.

I was typing a response as a_freyer's post came in. So, uh, yeah, what he said.

I still can't get it too work...
I didn't understand the concept of the "Run rules on folder contents". So it applies all the rules for that folder to all its subfolders? What if I have other rules for the same folder that I don't want to be applied to subfolders?

Here are my three rules.

Check the preview. See what it thinks the size is.

tkilgour wrote:So it applies all the rules for that folder to all its subfolders?

Yup. It will apply ALL rules to ALL subfolders, as our rules are currently written.

tkilgour wrote:What if I have other rules for the same folder that I don't want to be applied to subfolders?

It will also run those rules too. One way to prevent this is to add something like this to your other rules:

Code: Select all: If (all) of the following are true: ... your rule criteria ... Subfolder depth = [THE SUBFOLDER DEPTH OF THE FOLDER THAT THIS RULE SHOULD UNIQUELY APPLY TO; FOR YOU I THINK THIS IS PROBABLY 0] Then ... your actions....

Subfolder depth is defined like this:

Code: Select all: 0. Folder that you're monitoring (e.g. Dropbox for you) 1. Any folder at this level 2. Any folder at the third level 3. other 2. Still subfolder depth of 2 1. Still subfolder depth of 1

I can only see what it applies to the first level of folders and (obviously) they're all full... is there a way to see what it is applying to the subfolders?

Thanks a_freyer, I get it now. It doesn't seem very intuitive though... It seems like there should be a way to turn it on for each rule...