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Re: Problems with ScriptingBridge and iTunes
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Re: Problems with ScriptingBridge and iTunes


  • Subject: Re: Problems with ScriptingBridge and iTunes
  • From: Jonathan 'Wolf' Rentzsch <email@hidden>
  • Date: Sat, 1 Mar 2008 23:06:54 -0600

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"]) { /* ... */ }

| Jonathan 'Wolf' Rentzsch   http://rentzsch.com
| Red Shed Software           http://redshed.net
|     "better" necessarily means "different"

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References: 
 >Problems with ScriptingBridge and iTunes (From: Hannes Petri <email@hidden>)

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