2009/4/29 Max Froumentin <max...@opera.com>: > Hi, > > I'm confused with http://dev.w3.org/2006/webapi/WebIDL/#Callback > > It seems that it is not possible to write: > > t.addListener(function() { ... }); > > without throwing a typeError when the callback is thrown. Does that mean that > you can never write an IDL > that will let you write foo(function() {...};) without errors, and that you > can only write it as foo({ baz: function() {...}}); ?
It throws a TypeError if the interface expected by addListener is [Callback=PropertyOnly], else it will work. > Also, the code labeled /* 2 */ is not explained. Does that mean that that > line does nothing? It means that when it is a function but implements the interface through property assignment, the function takes precedence when converted to an host object. > Cheers, > Max. > Giovanni
