But isn't this just an environment monad that has functions to convert a model into a view (= geometry = render function + picking function)? Plugin a different environment and voila, the widgets are painted and maybe even layed differently, but you don't have to change any code or data....

On Tue, Feb 3, 2009 at 8:50 PM, Jeff Heard <jefferson.r.heard@gmail.com> wrote:

Similarly, I've been wondering what's at the core of a GUI? It seems
in recent years that more people have been moving towards web-based
applications, and away from traditional GUIs, so the meaning of them
may be changing. The old question seemed to be Page vs.
Control-Board, but that seems like implementation, when the real
essence of a GUI is taking in common kinds of user input and
displaying output in a sensible way. Similarly, there are more ways
to interact with a computer than ever before, from simple keyboard up
through multitouch interfaces like the iPhone. It would be cool to me
to see a semantic model that captures this.

2009/2/3 Conal Elliott <conal@conal.net>:

> [Spin-off from the haskell-cafe discussion on functional/denotational GUI
> toolkits]
>
> I've been wondering for a while now what a well-designed alternative to CSS
> could be, where well-designed would mean consistent, composable, orthogonal,
> functional, based on an elegantly compelling semantic model (denotational).
>
> - Conal
>
>

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