Re: Obtaining an array of the names of the attributes and relations of a class
Re: Obtaining an array of the names of the attributes and relations of a class
- Subject: Re: Obtaining an array of the names of the attributes and relations of a class
- From: Scott Anguish <email@hidden>
- Date: Mon, 21 Nov 2005 18:40:35 -0500
Ah, sorry.
You can't use that class to investigate what attributes are available
for a class. It's only used by AppleScript, and that's it. As
others have said, you'd have to implement the functionality yourself
(using the runtime stuff that mmalc pointed out)
You also said
I would like to be able to make it from these NSClassDescription
and NSMetaDataItem that the docs introduce, without my
understanding of their usage.
these are entirely different things... no relationship between the
two.. one is an abstract class that there is only a single concrete
instance of (and it's only for looking at AppleScript dictionaries),
and the other is data returned by Spotlight that contains the
metadata for a file on disk.
oh, malc phfffft.
On Nov 21, 2005, at 4:55 PM, glenn andreas wrote:
On Nov 21, 2005, at 6:40 PM, Scott Anguish wrote:
I think you needed to read a bit further down on the page...
NSScriptClassDescription is the only concrete subclass of
NSClassDescription provided in Cocoa. It encapsulates an
application’s scripting information.
So it's only useable with AppleScripting. If you don't define an
applescript dictionary, I don't think you'll get anything out of it.
On Nov 21, 2005, at 10:23 AM, Francis Derive wrote:
Also, I can read in the Key-Value Coding Programming Guide, page
39, that "For example the 'attributes' method return the list of
all attributes defined for a class", but this method belongs to
the class NSMetaDataItem, which is another worry to get !
I continue searching for the light, but wouldn't wonder if
anyone here could give me the light.
Scott,
I did read it, didn't understand, and now I am left with an
ignorance worse than before.
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