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|
#!/usr/bin/perl -W
use strict;
use Carp;
use POE;
use Term::Visual;
sub MAX_SECS_BETWEEN_LINES () { 5 }
sub MAX_SECS_BETWEEN_STATUS () { 60 }
sub MAX_SECS_BETWEEN_STDERR () { 30 }
my @alphabet = ('A'..'Z', 'a'..'z', '0'..'9');
my $vt = Term::Visual->new( Alias => "interface" );
$vt->set_palette( mycolor => "magenta on black",
statcolor => "green on black",
sockcolor => "cyan on black",
ncolor => "white on black",
st_frames => "bright cyan on blue",
st_values => "bright white on blue",
stderr_bullet => "bright white on red",
stderr_text => "bright yellow on black",
err_input => "bright white on red",
help => "white on black",
help_cmd => "bright white on black" );
my $window_id = $vt->create_window(
Window_Name => "window_one",
Status => { 0 =>
{ format => "\0(st_frames)" .
" [" .
"\0(st_values)" .
"%8.8s" .
"\0(st_frames)" .
"] " .
"\0(st_values)" .
"%s",
fields => [qw( time name )] },
},
Buffer_Size => 1000,
History_Size => 50,
Title => "Title of window_one" );
POE::Session->create
(inline_states =>
{ _start => \&start_guts,
got_term_input => \&handle_term_input,
update_time => \&update_time,
update_name => \&update_name,
test_stderr => \&test_stderr,
activity => \&activity,
}
);
$vt->print($window_id, "My Window ID is $window_id");
## Initialize the back-end guts of the "client".
sub start_guts {
my ($kernel, $heap) = @_[KERNEL, HEAP];
# Tell the terminal to send me input as "got_term_input".
$kernel->post( interface => send_me_input => "got_term_input" );
# Start updating the time.
$kernel->yield( "update_time" );
$kernel->yield( "update_name" );
$kernel->yield( "test_stderr" );
$kernel->yield( "activity" );
}
### The main input handler for this program. This would be supplied
### by the guts of the client program.
sub handle_term_input {
# beep();
my ($kernel, $heap, $input, $exception) = @_[KERNEL, HEAP, ARG0, ARG1];
$vt->print($window_id, $input);
}
### Update the time on the status bar.
sub update_time {
my ($kernel, $heap) = @_[KERNEL, HEAP];
# New time format.
use POSIX qw(strftime);
$vt->set_status_field( $window_id, time => strftime("%I:%M %p", localtime) );
# Schedule another time update for the next minute. This is more
# accurate than using delay() because it schedules the update at the
# beginning of the minute.
$kernel->alarm( update_time => int(time() / 60) * 60 + 60 );
}
sub update_name {
my ($kernel, $heap) = @_[KERNEL, HEAP];
$vt->set_status_field( $window_id, name => $alphabet[rand @alphabet] x (rand(15) + 3) );
$kernel->delay( update_name => rand(MAX_SECS_BETWEEN_STATUS) );
}
# Periodically test STDERR redirection.
sub test_stderr {
my $kernel = $_[KERNEL];
warn "generic stderr message: " . scalar(gmtime()) . " GMT";
$kernel->delay( test_stderr => rand(MAX_SECS_BETWEEN_STDERR) );
}
# Simulate Screen Activity.
sub activity {
my $kernel = $_[KERNEL];
my @words;
my $word_count = int(rand(29)) + 1;
for (1..$word_count) {
push @words, $alphabet[rand @alphabet] x (rand(10)+1);
}
my $input = shift(@words);
foreach my $word (@words) {
$input .= (" " x (rand(5)+1)) . $word;
}
$vt->print( $window_id, $input );
$kernel->delay( activity => rand(MAX_SECS_BETWEEN_LINES) );
}
$poe_kernel->run();
$vt->shutdown;
exit 0;
|
