#!/usr/bin/perl

use strict;
use warnings;

package UserInterface;

use base 'Tk::MainWindow';
require Tk::HList;

my $MinWidth    = 640;
my $MinHeight   = 480;

sub new {
   my ($class) = shift;

   my $self = $class->SUPER::new(@_);

   $self->build_display;

   return ($self);
}

sub run {
   my $self = shift;
   $self->SUPER::MainLoop;
}

sub center {
   my $self = shift;

   $self->update;

   my $w = $self->width;
   my $h = $self->height;

   my $posx = int(($self->screenwidth - $w) / 2);
   my $posy = int(($self->screenheight - $h) / 2);

   $self->geometry($w . 'x' . $h . '+' . $posx . '+' . $posy);
}

sub datalist {
   $_[0]->{fl2r_datalist} = $_[1] if @_ > 1;
   return $_[0]->{fl2r_datalist}
}

sub datalist_scroll_y {
   $_[0]->{fl2r_datalist_scroll_y} = $_[1] if @_ > 1;
   return $_[0]->{fl2r_datalist_scroll_y}
}

sub build_display {
   my $self = shift;
   
   $self->title("");
   $self->geometry($MinWidth .'x'. $MinHeight);
   $self->minsize($MinWidth, $MinHeight);
   $self->center;

   $self->build_datalist;
}

sub build_datalist {
   my $self = shift;

   $self->datalist_scroll_y(
       $self->Scrollbar(
           -orient => 'vertical',
       )->pack(
           -side   => 'right',
           -fill   => 'y'
       )
   );

   $self->datalist(
       $self->HList(
           -columns            => 6,
           -header             => 1,
           #-height             => '15',
           -background         => 'white',
           -yscrollcommand => ['set', $self->datalist_scroll_y]
       )->pack(
           -side   => 'right',
           -fill   => 'both',
           -expand => 1
       )
   );

   $self->datalist_scroll_y->configure(
       -command => ['yview', $self->datalist]
   );

   my $col = 0;
   $self->datalist->headerCreate($col++, -text => '#');
   $self->datalist->headerCreate($col++, -text => 'Timestamp');
   $self->datalist->headerCreate($col++, -text => 'Thread Id');
   $self->datalist->headerCreate($col++, -text => 'Message');
   $self->datalist->headerCreate($col++, -text => 'Fipo Start');
   $self->datalist->headerCreate($col++, -text => 'Fipo End');
   
   for( (0..100) )
   {
       $self->datalist->add($_, -text => $_ );
   }
}

1;

my $ui = new UserInterface;
$ui->run;