def __init__(self, **kw):
'''
ctor
Unlike many extracted components, this one currently does not
accept a selector argument. The source of the desktop page is
scanned to locate the google analytics tracking code.
'''
assert 'selector' not in kw
if 'idname' not in kw:
kw['idname'] = util.idname('ga')
kw['selector'] = None
super().__init__(**kw)
def test_idname(self):
self.assertSequenceEqual('mwu-elem-42', util.idname(42))
self.assertSequenceEqual('mwu-elem-0', util.idname(0))
self.assertSequenceEqual('mwu-elem-blah', util.idname('blah'))
