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-$TeXLive::waitVariableX::VERSION = '1.0';
-
-package TeXLive::waitVariableX;
-
-use Carp;
-use Exporter;
-
-use base qw/Exporter/;
-@EXPORT = qw/waitVariableX/;
-use strict;
-
-sub waitVariableX {
-
- use Tie::Watch;
-
- my ($parent, $millis) = (shift, shift); # @_ has list of var refs
-
- croak "waitVariableX: no milliseconds." unless defined $millis;
- my ($callback, $st, $tid, @watch, $why);
-
- if (ref $millis eq 'ARRAY') {
- $callback = Tk::Callback->new($millis->[1]);
- $millis = $millis->[0];
- }
-
- $st = sub {my $argv = $_[0]->Args('-store'); $why = $argv->[0]};
- foreach my $vref (@_) {
- push @watch,
- Tie::Watch->new(-variable => $vref, -store => [$st, $vref]);
- }
- $tid = $parent->after($millis => sub {$why = 0}) unless $millis == 0;
-
- $parent->waitVariable(\$why); # wait for timer or watchpoint(s)
-
- $_->Unwatch foreach @watch;
- $parent->afterCancel($tid);
- $callback->Call($why) if defined $callback;
-
- return $why; # why we stopped waiting: 0 or $vref
-
-} # end waitVariableX
-
-1;
-__END__
-
-
-=head1 NAME
-
-TeXLive::waitVariableX - a waitVariable with extensions.
-
-=head1 SYNOPSIS
-
- use Tk::waitVariableX;
-
- $splash->waitVariableX( [$millis, $destroy_splashscreen], \$v1, \$v2} );
-
-=head1 DESCRIPTION
-
-This subroutine waits for a list of variables, with a timeout - the
-subroutine returns when one of the variables changes value or the timeout
-expires, whichever occurs first.
-
-Although the millisecond parameter is required, it may be zero, which
-effects no timeout. The milliscond paramter may also be an array of
-two elements, the first the millisecond value, and the second a
-normal Per/Tk callback. The callback is invoked just before
-waitVariableX returns.
-
-Callback format is patterned after the Perl/Tk scheme: supply either a
-code reference, or, supply an array reference and pass the callback
-code reference in the first element of the array, followed by callback
-arguments.
-
-=head1 COPYRIGHT
-
-Copyright (C) 2000 - 2002 Stephen O. Lidie. All rights reserved.
-
-This program is free software; you can redistribute it and/or modify it under
-the same terms as Perl itself.
-
-This package is a literal copy of the original package only changing its name.
-=cut