A Class Browser for HTMLView (spawn)
Once again, note the outline format of the class. The idea is to give the more of the feel of a direct-manipulation environment, where each class has its own browser, and its methods and other attributes appear in context. If you click on the first button, next to "Subclass of ...", you can see the class header.
Note that the superclass
is View[URL], which looks a bit different than the syntax for a normal Smalltalk class name.
To the type system, View is a generic class, and needs
to be parameterized by the type of the model; in this case that
is a URL. The clause in brackets is invisible to the VM, so you can ignore all this and refer to the superclass in
the untyped way if you want. But if you use the typed version,
not only can you typecheck your class, but it is a lot easier to
read, as well: anyone looking at it can see exactly what
kind of model we are dealing with. To see the superclass chain for HTMLView,
press the
Other important buttons on the class browser toolbar are:
Make sure you have spawned a class browser on HTMLView, and then proceed to the next page.