Re: Problems with ScriptingBridge and iTunes

FROM : Jonathan 'Wolf' Rentzsch
DATE : Sun Mar 02 06:06:54 2008

On Mar 1, 2008, at 7:28 PM, Hannes Petri wrote:
> iTunesApplication *iTunes = [[SBApplication alloc] 
> initWithBundleIdentifier:@"com.apple.iTunes"];
> iTunesTrack *currentTrack = [iTunes currentTrack];
>     
> if ([currentTrack isKindOfClass:[iTunesFileTrack class]]) {
>     …
> }
>
> The problem is, that the class of the object returned is _always_ 
> iTunesTrack, and not iTunesFileTrack, as i expect it to be. If i run 
> the following applescript code:
>
> tell application "iTunes" to current track
>
> I get a "file track", which makes it possible to fetch the path 
> using the "location" attribute. If I, in the ObjC example, try 
> [currentTrack location], I'm told that it doesn't respond to that 
> selector.
> I have made certain that the object is of class iTunesTrack by 
> typing 'po [currentTrack class]' in gdb.


I ran into the same thing -- Scripting Bridge may play games 
isKindOfClass: that bite us. My work-around is to test by class name:

if ([[track className] isEqualToString:@"ITunesURLTrack"]) { /* ... */ }

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