[Pixlib] PixLib MVC, where should Key triggers go?

[Tim Will]

Hey Jon,
I would definitely put them in a view!  Use the view to trap the key input -
but don't do any logic there.  You want to keep the logic separate from the
user interaction.  So, if the response to the user gesture is just a
cosmetic one, and no model needs to be updated, you can have a simple
control matched to the view (a good example might be a rollover - it's just
a simple animation change, and no other view or model needs to be informed).
But if the key press triggers any kind of data change - this is where you
will follow your event/frontcontroller/command/model flow.
It's important to keep in mind two things:
-views are not just for graphics, anything that results in a model needing
to change should originate at a view
-to the application, the user is just another model :)  Who do models 'talk'
to?  Only views....

-tim.

On 3/8/07, Jon Bennett <jmbennett at gmail.com> wrote:
>
> hi,
>
> I need to capture some key commands (left right arrow keys) in my
> project and I'm not 100% sure where I should put the code.
>
> Should it go in the view, where the buttons that trigger the events
> are at the moment?
>
> I don't think they should be a command, I could put them in
> Application, but that doesn't feel right, any ideas?
>
> thanks,
>
> Jon
>
> --
>
>
> jon bennett
> t: +44 (0) 1225 341 039 w: http://www.jben.net/
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