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|
package XXV::OUTPUT::HTML::WAIT;
use strict;
use Tools;
use XXV::OUTPUT::HTML::PUSH;
=head1 NAME
XXV::OUTPUT::HTML::WAIT - A Processbar for XXV system
=head1 SYNOPSIS
use XXV::OUTPUT::HTML::WAIT;
my $waiter = XXV::OUTPUT::HTML::WAIT->new(
-cgi => $obj->{cgi}, # The CGI Object from Lincoln Stein
-handle => $obj->{handle}, # The handle to printout the http Stuff
-callback => sub{ # Callback for html output.
# In this case parse the html template wait.tmpl
my ($min, $max, $cur, $steps) = @_;
my $out = $obj->parseTemplate(
'wait',
{
msg => $msg,
minimum => $min,
current => $cur,
maximum => $max,
steps => $steps
},
);
return $out;
},
);
$waiter->min(0); # Min Value for process Bar
$waiter->max(10); # Max Value for process Bar
$waiter->screen('yes'); # Every call of next will redraw the process bar
while($c > 10) {
$waiter->next($c++); # Next Event with current value
}
$waiter->end;
=cut
# ------------------
sub new {
# ------------------
my($class, %attr) = @_;
my $self = {};
bless($self, $class);
$self->{handle} = $attr{'-handle'}
|| return error('No handle defined!');
$self->{cgi} = $attr{'-cgi'}
|| return error('No CGI Object defined!');
$self->{callback} = $attr{'-callback'}
|| return error('No Callback to print out!');
$self->{steps} = $attr{'-steps'} || 10;
$self->{charset} = $attr{'-charset'}
|| 'ISO-8859-1';
$self->{pusher} = XXV::OUTPUT::HTML::PUSH->new(
-cgi => $self->{cgi}, # The CGI Object from Lincoln Stein
-handle => $self->{handle}, # The handle to printout the http Stuff
-charset => $self->{charset}
);
$self->init();
return $self;
}
# ------------------
sub init {
# ------------------
my $obj = shift || return error('No object defined!');
$obj->{STEP} = 0;
$obj->{pusher}->start();
undef $obj->{FirstRefresh};
}
# ------------------
sub next {
# ------------------
my $obj = shift || return error('No object defined!');
my $cur = shift || $obj->{MAX};
my $end = shift || 0;
my $msg = shift || 0;
# Don't show really every step, even is screen defined,
# avoid high traffic and long duration of waiter progress
my $t = time;
return
if(defined $obj->{SCREEN} && $obj->{SCREEN} eq 'no'
&& $end == 0
&& $obj->{LastRefreshTime} && $obj->{LastRefreshTime} > ($t - 1));
# remember time from from first call
$obj->{FirstRefresh} = $t
if(not $obj->{FirstRefresh});
# calc end time of execution
my $rest = $end ? 0 : $obj->{MAX} - $cur;
my $deltaT = $t - $obj->{FirstRefresh};
my $etaT = ($cur > 0) ? ($deltaT / $cur * $rest) : 0;
# Format end time of execution from seconds to human readable format
my $eta = sprintf("%02d:%02d:%02d",$etaT / 3600 % 24 ,($etaT / 60) % 60, $etaT % 60 );
$obj->{LastRefreshTime} = $t;
# 2.2 = 22 / 10
my $step = $obj->{MAX} / $obj->{steps};
$obj->{STEP} += $step;
if ($end or $cur > $obj->{MAX}) {
$obj->{pusher}->stop();
my $out = $obj->{endcallback}($obj->{MIN}, $obj->{MAX}, $cur, $obj->{steps}, $msg, $eta)
if(ref $obj->{endcallback} eq 'CODE');
} else {
my $out = $obj->{callback}($obj->{MIN}, $obj->{MAX}, $cur, $obj->{steps}, $msg, $eta);
$obj->{pusher}->print($out);
}
}
# ------------------
sub end {
# ------------------
my $obj = shift || return error('No object defined!');
my $msg = shift || 0;
return $obj->next(undef, $obj->{MAX}, 1, $msg);
}
# ------------------
sub endcallback {
# ------------------
my $obj = shift || return error('No object defined!');
$obj->{endcallback} = shift || return $obj->{endcallback};
}
# ------------------
sub max {
# ------------------
my $obj = shift || return error('No object defined!');
$obj->{MAX} = shift || return $obj->{MAX};
}
# ------------------
sub min {
# ------------------
my $obj = shift || return error('No object defined!');
$obj->{MIN} = shift || return $obj->{MIN};
}
# ------------------
sub screen {
# ------------------
my $obj = shift || return error('No object defined!');
$obj->{SCREEN} = shift || return $obj->{SCREEN};
}
1;
|
