I’m trying to understand the Finder Tags APIs in Mavericks.
I would like to set a custom Finder Tag on a number of files, ensure it appears
in the Finder sidebar tag set, and assign it a color so the user can gather the
files easily in the Finder. My application is a file manager and moves files
around, but never actually opens and saves them so the user cannot explicitly
assign Tags in a save dialog.
Let’s say I want to use “My Tag” as the tag string. I can assign a tag like
this:
NSDictionary *dictTags = [item resourceValuesForKeys:[NSArray
arrayWithObject:NSURLTagNamesKey] error:&error];
NSArray *arrPreviousTags = [dictTags valueForKey:NSURLTagNamesKey];
NSArray *arrNewTags = [arrPreviousTags arrayByAddingObject:@"My Tag"];
[item setResourceValue:arrNewTags forKey:NSURLTagNamesKey error:&error];
then “My Tag” shows in the Finder tags list, but with no color. I can’t seem to
find much by way of a Tags API other than the NSURL NSURLTagNamesKey resources.
How can I assign a color to the tag “My Tag”?
I’d even settle for always using the standard Red tag, for example, but I would
need to check that it exists in case the user has changed the default Tag set.
And it might have a different name in other localizations. Can I enumerate all
the Finder Tags that are available? The NSWorkspace labels don’t seem to be the
same thing:
NSArray *possibleTags = [[NSWorkspace sharedWorkspace] fileLabels];
always returns: None, Gray, Green, Purple, Blue, Yellow, Red, Orange, i.e. not
my custom tag, nor even the standard “Important”, “Home” or “Work”.
Thanks,
— Ben.
(PS: I made a similar post a week or so ago but I don’t think it ever got to
the list. Apologies if anyone gets this twice.)
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