Putting on a heretical hat, it seems that trying to utilize a GUI
library designed for Java's imperative programming model from a
functional language is an exercise in frustration trying to pound a
square peg through a round whole. While I like Chouser's example (it's
very cool, and makes a good demo) I'm not sure how realistic this is
for a non-trivial GUI app. How do people see the thread model used by
Swing working with Clojure's?
On Wed, Oct 8, 2008 at 6:19 PM, Michael Beauregard
<[EMAIL PROTECTED]> wrote:
>
> I spent a few hours writing a macro that would allow a more
> declarative gui than the usual swing approach. I didn't finish it, but
> concluded that this could be quite doable. For example, I was aiming
> for a macro that would allow the following declarative style:
>
> [Note that I don't have the actual code or example that I had working
> since that is on my laptop hibernating at home atm.]
>
> ; rough example
> (make-ui
> '(JFrame {:title "The title"}
> (JLabel {:id fooLabel :text "Some label"})
> (JButton {:id btn1 :label "Click me" :actionPerformed (fn [evt]
> (println "clicked")) })
> (JButton {:label "Apply" :actionPerformed someFn :enabled false })))
>
> This doesn't address the functional/stateless impedance mismatch, but
> would make defining guis simpler. However, the basic idea is to
> represent the containment hierarchy inherent in a gui with the nesting
> of lisp expressions. The map of attributes would be applied as setters
> on each component after it is created. The event handlers such as
> ":actionPerformed" are harder, but also doable.
>
> The nasty part that I haven't spent any time thinking about is the
> LayoutManager gong show in swing. That sounds much harder to solve
> declaratively without writing a bunch of LMs that support simplifying
> the declarative style.
>
> Michael
>
> On Wed, Oct 8, 2008 at 3:37 PM, Bob <[EMAIL PROTECTED]> wrote:
>>
>> Yes, I'm very interested in this question as well. I'm learning
>> clojure and its my first attempt at functional programming. And I was
>> thinking of writing a swing GUI program to try it out. But it would
>> seem the GUI state is going to be a mass of mutable state which
>> doesn't map well to the functional style. What am I missing? Does
>> anyone have a non-trivial example of a Swing program done the Clojure
>> way?
>>
>> Thanks much,
>> Bob
>>
>> On Oct 8, 2:07 pm, Mitch <[EMAIL PROTECTED]> wrote:
>>> I'm interested in doing a GUI program in clojure, but the functional
>>> style of clojure doesn't seem to blend too well with the normal Java
>>> GUI libraries. Does anybody have any advice on using clojure for GUI
>>> programming? I've seen Rich's ants demo, but that isn't really an
>>> event driven GUI program (just a nice display for his simulation).
>>> Has anyone tried using of the GUI building tools for Java with
>>> clojure? I feel like these could help a lot, but I'm not sure.
>>>
>>> Thanks,
>>> Mitch
>> >
>>
>
> >
>
--
Tom Emerson
[EMAIL PROTECTED]
http://www.dreamersrealm.net/~tree
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