Please excuse my terminology.

I've been working on a cut down mock up of an app.

At it's core is a Tk front end which calls and receives input from other methods/subs.

It's this circularity that has been giving me grief. In particular, I'm passing the Tk object to subs that need it which feels wrong somehow.

How would other monks approach this?

#!/usr/bin/perl

# auto.pl

use strict;
use warnings;

use Auto::GUI;
use Auto::MakeArticle;

my $auto = Auto::GUI->new;
$auto->fire_up_front_end
  or die;
[download]

package Auto::GUI;

use strict;
use warnings;

sub new {
    my $class = shift;
    my $self = {};
    bless $self, $class;
    return $self;
}

sub fire_up_front_end{
  my $self = shift;
  # display the gui
  # later... a button will call MakeArticle
  my $mk = Auto::MakeArticle->new;
  $mk->make($self); # pass the GUI object (?)
}

sub msg {
  # show progress/error messages
  my $self = shift;
  my $msg = shift;
  print "$msg\n";

}

1;
[download]

package Auto::MakeArticle;

use strict;
use warnings;

sub new {
    my $class = shift;
    my $self = {};
    bless $self, $class;
    return $self;
}

sub make{
  my $self = shift;
  my $gui = shift; # GUI object
  
  # do stuff to make page
  
  my $msg = "message from MakePage";
  $gui->msg($msg); 
}

1;
[download]

The output is as expected:

---------- Capture Output ----------
> "C:\Perl\bin\perl.exe" auto.pl
message from MakePage

> Terminated with exit code 0.
[download]

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