#!/usr/bin/perl
use strict;
use warnings;
use diagnostics;

use Tk;
require Tk::HList;

my $top = MainWindow->new(-title=>"FileSelector");

my $h = $top->Scrolled('HList',
                       -drawbranch => 1,
                       -separator  => '/',
                       -indent     => 15,
                       -command    => \&show_or_hide_dir,
                      )
                ->pack(-fill       => 'both',
                       -expand     => 'y',
                      );

my $xpm = <<'END';
/* XPM */
static char *test[]={
"32 32 11 1",
". c None",
"# c #000000",
"h c #004000",
"g c #004040",
"f c #404000",
"e c #808080",
"i c #a0a0a4",
"c c #c0c000",
"d c #ffff00",
"b c #ffffc0",
"a c #ffffff",
"................................",
"................................",
"................................",
"................................",
".............#....###...........",
"............#a##.#aba##.........",
"...........#aaaa#aaaaaa##.......",
"..........#aaaa#aaaaaaaba##.....",
".........#aaaa#aaaaaaaaaaab##...",
"........#aaba#aaaaaaabaabaaaa##.",
".......#aaba#baaaaa#baaaaaabaaa#",
"......#aaaa#aaaaab#a##baaaaaaa#.",
".....#aaba#aacbba#aaaa##baaab#..",
"....#bbaa#abaacc#aaaaaaa##aa#...",
"...#bbbb#aaabaa#aaabaaaaaa##....",
"..#bbbb#bacaaa#aaaaaaaabaaaa##..",
".#bbbb#bbaacc#aacaaaaaaaaaaaba#.",
"#ddbb#bbbbba#aaaaccaaaaaaaaaaaa#",
"#edddfgcbbbfaacaaaaccaaaaaaaaa#e",
".#hedddfhcfabaaccaaabccaaaaaa#e.",
"...##edddhaacbbaaccbaaaccaab#i..",
".....##e#baaaccabaaccbaabaa#i...",
"......##bacbaabccbaaaccabb#e....",
"......#bbbbccaabbccaaaaab#i.....",
".....#bbbbbbbccabbaccaab#i......",
".....#ebbbbbbbbccbaabba#i.......",
"......##ebbbbbbbbccaabhe........",
"........##ebbbbbbbbbb#e.........",
"..........##ibbbbbbbhe..........",
"............##ebbbb#e...........",
"..............#hee#i............",
"................##i............."};
END

my %icons;
#$icons{"open"}   = $top->Bitmap(-file => './open_folder.xbm');
#$icons{"closed"} = $top->Bitmap(-file => './folder.xbm');
$icons{"open"}   = $top->Pixmap(-data => $xpm);
$icons{"closed"} = $top->Pixmap(-data => $xpm);

#show_or_hide_dir("c:\\programme");
show_or_hide_dir(@ARGV);
#show_or_hide_dir("p:");

#show_or_hide_dir("/temp");

MainLoop();

#-----------------------------------------------------------------------
sub show_or_hide_dir {
    my $path = $_[0];
    print "PATH:".$path;
    return if (! -d $path);
    if ($h->info('exists', $path)) {
        my $next_entry = $h->info('next', $path);
        if (!$next_entry || (index ($next_entry, "$path/") == -1)) {
            $h->entryconfigure($path, '-image' => $icons{"open"});
            add_dir_contents($path);
            my $path1 = $path;
            my $path2 = $path;
            my @du = ("du", "-b", "-h", $path1, $path2);
            my $dirSize = system(@du) == 0 or die "system @du failed: $?";
        }
        else {
            $h->entryconfigure($path, '-image' => $icons{"closed"});
            $h->delete('offsprings', $path);
        }
    }
    else {
        die "'$path' is not a directory\n" if (! -d $path);
        $h->add($path,
                -itemtype => 'imagetext',
                -image    => $icons{"open"},
                -text     => $path,
               );
        add_dir_contents($path);
    }
}

sub add_dir_contents {
    my $path = $_[0];
    my $oldcursor = $top->cget('-cursor');

    $top->configure(-cursor => 'watch');
    $top->update();

    my @files = <$path/*>;
    foreach my $file (@files) {
        $file =~ s|//|/|g;
        #$file =~ /^\s*$/;

        print "FILE:".$file."\n\n";
        (my $text = $file) =~ s|^.*/||g;
        if (-d $file) {
            $h->add($file,
                    -itemtype => 'imagetext',
                    -image    => $icons{"closed"},
                    -text      => $text,
                   );
        }
        else {
            $h->add($file,
                    -itemtype => 'text',
                    -text     => $text,
                   );
        }
    }
    $top->configure(-cursor => $oldcursor);
} # sub add_dir_contents