perl-install/interactive_http.pm


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package interactive_http; # $Id$

use diagnostics;
use strict;
use vars qw(@ISA);

@ISA = qw(interactive);

use CGI;
use interactive;
use common;
use log;

my $script_name = $ENV{INTERACTIVE_HTTP};
my $no_header;
my $uid;
my $pipe_r = "/tmp/interactive_http_r";
my $pipe_w = "/tmp/interactive_http_w";

sub open_stdout {
    open STDOUT, ">$pipe_w" or die;
    $| = 1;
    print CGI::header();
    $no_header = 1;    
}

# cont_stdout must be called after open_stdout and before the first print
sub cont_stdout {
    my ($title) = @_;
    print CGI::start_html(-title => $title) if $no_header;
    $no_header = 0;
}

sub new_uid {
    my ($s, $ms) = gettimeofday();
    $s * 256 + $ms % 256;
}

sub new() {
    open_stdout();
    bless {}, $_[0];
}

sub end() { 
    -e $pipe_r or return; # don't run this twice
    my $q = CGI->new;
    cont_stdout("Exit");
    print "It's done, thanks for playing", $q->end_html;
    close STDOUT;
    unlink $pipe_r, $pipe_w;
}
sub exit() { end; exit($_[1]) }
END { end() }

sub ask_fromW {
    my ($o, $common, $l, $l2) = @_;

  redisplay:
    my $uid = new_uid();
    my $q = CGI->new;
    $q->param(state => 'next_step');
    $q->param(uid => $uid);
    cont_stdout($common->{title});

#    print $q->img({ -src => "/icons/$o->{icon}" }) if $o->{icon};
    print @{$common->{messages}};
    print $q->start_form(-name => 'form', -action => $script_name, -method => 'post');

    print "<table>\n";

    map_index {
	my $e = $_;

	print "<tr><td>$e->{label}</td><td>\n";

	$e->{type} = 'list' if $e->{type} =~ /(icon|tree)list/;

	#- combo doesn't exist, fallback to a sensible default
	$e->{type} = $e->{not_edit} ? 'list' : 'entry' if $e->{type} eq 'combo';

	if ($e->{type} eq 'bool') {
	    print $q->checkbox(-name => "w$::i", -checked => ${$e->{val}} && 'on', -label => $e->{text} || " ");
	} elsif ($e->{type} eq 'button') {
	    print "nobuttonyet";
	} elsif ($e->{type} =~ /list/) {
	    my %t; 
	    $t{$_} = may_apply($e->{format}, $_) foreach @{$e->{list}};

	    print $q->scrolling_list(-name => "w$::i",
				     -values => $e->{list},
				     -default => [ ${$e->{val}} ],
				     -size => 5, -multiple => '', -labels => \%t);
	} else {
	    print $e->{hidden} ?
	      $q->password_field(-name => "w$::i", -default => ${$e->{val}}) :
	      $q->textfield     (-name => "w$::i", -default => ${$e->{val}});
	}

	print "</td></tr>\n";
    } @$l;

    print "</table>\n";
    print $q->p();
    print $q->submit(-name => 'ok_submit', -value => $common->{ok} || _("Ok"));
    print $q->submit(-name => 'cancel_submit', -value => $common->{cancel}) if $common->{cancel};
    print $q->hidden('state'), $q->hidden('uid');
    print $q->end_form, $q->end_html;

    close STDOUT; # page terminated

    while (1) {	
	local *F;
	open F, "<$pipe_r" or die;
	$q = CGI->new(\*F);
	$q->param('force_exit_dead_prog') and $o->exit;
	last if $q->param('uid') == $uid;

	open_stdout(); # re-open for writing
	cont_stdout(_("Error"));
	print $q->h1(_("Error")), $q->p("Sorry, you can't go back");
	goto redisplay;
    }
    map_index {
	my $e = $_;
	my $v = $q->param("w$::i");
	if ($e->{type} eq 'bool') {
	    $v = $v eq 'on';
	}
	${$e->{val}} = $v;
    } @$l;

    open_stdout(); # re-open for writing
    $q->param('ok_submit');
}

sub p {
    print "\n" . CGI::br($_) foreach @_;
}

sub wait_messageW {
    my ($o, $title, $messages) = @_;
    cont_stdout();
    print "\n" . CGI::p();
    p(@$messages);
}

sub wait_message_nextW {
    my ($o, $messages, $w) = @_;
    p(@$messages);
}
sub wait_message_endW {
    my ($o, $w) = @_;
    p(_("Done"));
    print "\n" . CGI::p();
}


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