Re: Simple datafile-to-GUI help needed

Craig also asked at http://perlmonks.org/?node_id=775181 so I replied  
there.  There's no point in having this conversation in two places.

The code was small enough to include on the list.

Please only post good code to the Cookbook.
Corollary: please report (or fix) broken code in the Cookbook.

-- 
Rocco Caputo - [email protected]


On Jun 26, 2009, at 12:19, Craig Votava wrote:

> Folks-
>
> I have a simple problem that I want to solve with POE. As I'm  
> looking at all the various options, I'm getting overwhelmed and need  
> some help picking out the "best".
>
> I have an ascii logfile (non-growing) that I want to represent in a  
> GUI (using Tk). My code so far, creates a POE session, and builds  
> the GUI output window (which is ready to start getting data to add  
> into it).
>
> Now I need to read in the data, parse it into an internal data  
> structure, then feed that to the GUI for display.
>
> What is the best way to do this? Here are what I think are my 2 best  
> thoughts so far:
>
> 1.) Same session: use Tk's fileevent to get any data that is  
> available, then parse it, then display it (POE handles the  
> sequencing so the GUI still functions while the reading-in and  
> parsing is happening, right?).
>
> 2.) Separate sessions: Create a filter that parses the data and use  
> something like POE::Wheel::FollowTail starting it at the beginning  
> of the file. Use events between the two sessions to alert the GUI  
> there's a new internal data structure ready for slapping up on the  
> GUI.
>
> Can the POE experts help me understand why I would want one over the  
> other?
>
> Are there any better options?
>
> Would it make sense to post this result into the cookbook (I  
> couldn't find an example of this anywhere)? Any pointers are  
> appreciated.
>
> Thanks
>
> -Craig