Hi Ronald, This works wonderfully. Many Thanks.
Georg > > On 11 Jul, 2010, at 1:18, Georg Seifert wrote: > >> Hi Ronald, >> >> Thanks for your response. >> >> I did tried this: >> >> class PathNodesProxy (object): >> def __init__(self, owner): >> self._ower = owner >> def __getitem__(self, i): >> print "__getitem__", i >> return self.nodeAtIndex_(i) >> def __setitem__(self, i, Node): >> print "__setitem__", i, Node >> self.setNode_atIndex_(Node, i) >> def __delitem__(self, i): >> print "__delitem__", i >> self.removeNodeAtIndex_(i) >> def append(self, Node): >> print "append", Node >> self.addNode_(Node) >> def count(self): >> print "count" >> return self.nodes().count() >> >> del GSPath.__dict__['nodes'] >> GSPath.__dict__['nodes'] = lambda self: PathNodesProxy(self) >> >> the next to last line gives this error: >> TypeError: 'dictproxy' object does not support item deletion >> and the last (if I remove the first): >> TypeError: 'dictproxy' object does not support item assignment >> >> If I used: >> GSPath.nodes = lambda self: PathNodesProxy(self) >> It worked somehow, but it actually removed the nodes property from the cocoa >> object. And I still had to use the parenthesis. > > This should work: > > GSPath.nodes = property(lambda self: PathNodesProxy(self)) > > I've tested this with the count property on an array: > > :>>> from Foundation import NSArray > :>>> b = NSArray.arrayWithArray_([1,2]) > :>>> type(b).count = property(lambda self: id(self)) > :>>> b.pyobjc_instanceMethods.count() > 2 > :>>> b.count > 4359092688 > :>>> > > (The convoluted way to change the count property is because NSArray is a > class cluster and is not relevant for your problem) > > Ronald > _______________________________________________ Pythonmac-SIG maillist - Pythonmac-SIG@python.org http://mail.python.org/mailman/listinfo/pythonmac-sig unsubscribe: http://mail.python.org/mailman/options/Pythonmac-SIG
