package run_program; use diagnostics; use strict; use c; use MDK::Common; use common; # for get_parent_uid() use log; use Time::HiRes qw(ualarm); =head1 SYNOPSYS B enables to: =over 4 =item * run programs in foreground or in background, =item * to retrieve their stdout or stderr =item * ... =back Most functions exits in a normal form & a rooted one. e.g.: =over 4 =item * C & C =item * C & C =back Most functions exits in a normal form & one that die. e.g.: =over 4 =item * C & C =item * C & C =back =head1 Functions =over =cut 1; my $default_timeout = 10 * 60; =item set_default_timeout($seconds) Alters defaults timeout (eg for harddrake service) =cut sub set_default_timeout { my ($seconds) = @_; $default_timeout = $seconds; } my $callback_routine; my $callback_interval = 1 * 1000; =item set_wait_loop_callback($routine, $o_interval) Sets a callback routine that will be called at regular intervals whilst waiting for a program being run in the foreground. Optionally sets the interval in milliseconds between callbacks. If not set, the interval is 1 second. The callback routine will be passed one argument which is the pid of the program being run. The callback routine should not call sleep() or abort(), as that may prevent it being called again. =cut sub set_wait_loop_callback { my ($routine, $o_interval) = @_; $callback_routine = $routine; $callback_interval = $o_interval if $o_interval; } =item run_or_die($name, @args) Runs $name with @args parameterXs. Dies if it exit code is not 0. =cut sub run_or_die { my ($name, @args) = @_; run($name, @args) or die "$name failed\n"; } =item rooted_or_die($root, $name, @args) Similar to run_or_die() but runs in chroot in $root =cut sub rooted_or_die { my ($root, $name, @args) = @_; rooted($root, $name, @args) or die "$name failed\n"; } =item get_stdout($name, @args) Similar to run_or_die() but return stdout of program: =over 4 =item * a list of lines in list context =item * a string of concatenated lines in scalar context =back =cut sub get_stdout { my ($name, @args) = @_; my @r; run($name, '>', \@r, @args) or return; wantarray() ? @r : join('', @r); } =item get_stdout_raw($options, $name, @args) Similar to get_stdout() but allow to pass options to raw() =cut sub get_stdout_raw { my ($options, $name, @args) = @_; my @r; raw($options, $name, '>', \@r, @args) or return; wantarray() ? @r : join('', @r); } =item rooted_get_stdout($root, $name, @args) Similar to get_stdout() but runs in chroot in $root =cut sub rooted_get_stdout { my ($root, $name, @args) = @_; my @r; rooted($root, $name, '>', \@r, @args) or return; wantarray() ? @r : join('', @r); } =item run($name, @args) Runs $name with @args parameters. =cut sub run { raw({}, @_) } =item rooted($root, $name, @args) Similar to run() but runs in chroot in $root =cut sub rooted { my ($root, $name, @args) = @_; raw({ root => $root }, $name, @args); } =item raw($options, $name, @args) The function used by all the other, making every combination possible. Runs $name with @args parameters. $options is a hash ref that can contains: =over 4 =item * B: $name will be chrooted in $root prior to run =item * B: $name will be run as $ENV{PKEXEC_UID} or with the UID of parent process. Implies I =item * B: parameters will be hidden in logs (b/c eg there's a password) =item * B: $name will be run in the background. Default is foreground =item * B: $name will be run in a different default directory =item * B: a UID; $name will be with droped privileges ; make sure environment is set right and keep a copy of the X11 cookie =item * B: execution of $name will be aborted after C seconds =back eg: =over 4 =item * C<< run_program::raw({ root => $::prefix, sensitive_arguments => 1 }, "echo -e $user->{password} | cryptsetup luksFormat $device"); >> =item * C<< run_program::raw({ detach => 1 }, '/etc/rc.d/init.d/dm', '>', '/dev/null', '2>', '/dev/null', 'restart'); >> =back =cut sub raw { my ($options, $name, @args) = @_; my $root = $options->{root} || ''; my $real_name = ref($name) ? $name->[0] : $name; my ($stdout_raw, $stdout_mode, $stderr_raw, $stderr_mode); ($stdout_mode, $stdout_raw, @args) = @args if $args[0] =~ /^>>?$/; ($stderr_mode, $stderr_raw, @args) = @args if $args[0] =~ /^2>>?$/; my $home; if ($options->{as_user}) { $options->{setuid} = $ENV{PKEXEC_UID} ||= common::get_parent_uid();; } my $args = $options->{sensitive_arguments} ? '' : join(' ', @args); log::explanations("running: $real_name $args" . ($root ? " with root $root" : "")); return if $root && $<; $root ? ($root .= '/') : ($root = ''); my $tmpdir = sub { my $dir = $< != 0 ? "$ENV{HOME}/tmp" : -d '/root' ? '/root/tmp' : '/tmp'; -d $dir or mkdir($dir, 0700); $dir; }; my $stdout = $stdout_raw && (ref($stdout_raw) ? $tmpdir->() . "/.drakx-stdout.$$" : "$root$stdout_raw"); my $stderr = $stderr_raw && (ref($stderr_raw) ? $tmpdir->() . "/.drakx-stderr.$$" : "$root$stderr_raw"); #- checking if binary exist to avoid clobbering stdout file my $rname = $real_name =~ /(.*?)[\s\|]/ ? $1 : $real_name; if (! ($rname =~ m!^/! ? -x "$root$rname" || $root && -l "$root$rname" #- handle non-relative symlink which can be broken when non-rooted : whereis_binary($rname, $root))) { log::l("program not found: $real_name"); return; } if (my $pid = fork()) { if ($options->{detach}) { $pid; } else { my $ok; add2hash_($options, { timeout => $default_timeout }); my $remaining = $options->{timeout} if $options->{timeout} ne 'never'; #- We count in milliseconds when using a callback routine. $remaining *= 1000 if $remaining && $callback_routine; #- Preserve any pre-existing alarm. my $old_remaining = alarm(0) if $remaining; wait_again: eval { local $SIG{ALRM} = sub { die "ALARM" }; if ($callback_routine) { ualarm($callback_interval * 1000); } elsif ($remaining) { alarm($remaining); } waitpid $pid, 0; $ok = $? == -1 || ($? >> 8) == 0; if ($callback_routine) { ualarm(0); } elsif ($remaining) { alarm(0); } }; if ($@) { if ($@ =~ /^ALARM/ && $callback_routine) { $callback_routine->($pid); $remaining -= $callback_interval if $remaining; goto wait_again if !defined $remaining || $remaining > 0; } log::l("ERROR: killing runaway process (process=$real_name, pid=$pid, args=@args, error=$@)"); kill 9, $pid; #- Restore any pre-existing alarm. alarm($old_remaining) if $old_remaining; return; } #- Restore any pre-existing alarm. alarm($old_remaining) if $old_remaining; if ($stdout_raw && ref($stdout_raw)) { if (ref($stdout_raw) eq 'ARRAY') { @$stdout_raw = cat_($stdout); } else { $$stdout_raw = cat_($stdout); } unlink $stdout; } if ($stderr_raw && ref($stderr_raw)) { if (ref($stderr_raw) eq 'ARRAY') { @$stderr_raw = cat_($stderr); } else { $$stderr_raw = cat_($stderr); } unlink $stderr; } $ok; } } else { if ($options->{setuid}) { require POSIX; my ($logname, $home) = (getpwuid($options->{setuid}))[0,7]; $ENV{LOGNAME} = $logname if $logname; $ENV{HOME} = $home if $home; # if we were root and are going to drop privilege, keep a copy of the X11 cookie: if (!$> && $home) { # FIXME: it would be better to remove this but most callers are using 'detach => 1'... my $xauth = chomp_(`mktemp $home/.Xauthority.XXXXX`); system('cp', '-a', $ENV{XAUTHORITY}, $xauth); system('chown', $logname, $xauth); $ENV{XAUTHORITY} = $xauth; } # drop privileges: POSIX::setuid($options->{setuid}); } sub die_exit { log::l($_[0]); c::_exit(128); } if ($stderr && $stderr eq 'STDERR') { } elsif ($stderr) { $stderr_mode =~ s/2//; open STDERR, "$stderr_mode $stderr" or die_exit("run_program cannot output in $stderr (mode `$stderr_mode')"); } elsif ($::isInstall) { open STDERR, ">> /tmp/ddebug.log" or open STDOUT, ">> /dev/tty7" or die_exit("run_program cannot log, give me access to /tmp/ddebug.log"); } if ($stdout && $stdout eq 'STDOUT') { } elsif ($stdout) { open STDOUT, "$stdout_mode $stdout" or die_exit("run_program cannot output in $stdout (mode `$stdout_mode')"); } elsif ($::isInstall) { open STDOUT, ">> /tmp/ddebug.log" or open STDOUT, ">> /dev/tty7" or die_exit("run_program cannot log, give me access to /tmp/ddebug.log"); } $root and chroot $root; chdir($options->{chdir} || "/"); my $ok = ref $name ? do { exec { $name->[0] } $name->[1], @args; } : do { exec $name, @args; }; if (!$ok) { die_exit("exec of $real_name failed: $!"); } } } =item terminate($pid, $o_timeout) Sends the TERM signal to the process identified by $pid and waits for it to terminate. If it hasn't terminated in $o_timeout seconds, sends the KILL signal and returns without waiting. If $o_timeout is not specified, the default timeout is 5 seconds. If $o_timeout is less than or equal to zero, the TERM signal is not sent and the process is killed immediately. =cut sub terminate { my ($pid, $o_timeout) = @_; if (!defined $o_timeout || $o_timeout > 0) { kill 'TERM', $pid; eval { local $SIG{ALRM} = sub { die "ALARM" }; my $old_remaining = alarm($o_timeout || 5); waitpid $pid, 0; alarm($old_remaining); }; return if !$@; log::l("ERROR: killing runaway process (pid=$pid, error=$@)"); } kill 'KILL', $pid; } package bg_command; =item bg_command::new($class, $sub) Runs in background a sub that give back data through STDOUT a la run_program::get_stdout but w/ arbitrary perl code instead of external program =cut sub new { my ($class, $sub) = @_; my $o = bless {}, $class; if ($o->{pid} = open(my $fd, "-|")) { $o->{fd} = $fd; $o; } else { $sub->(); c::_exit(0); } } =item bg_command::DESTROY($o) When undefined (either explicitly or at end of lexical scope), close the fd and wait for the child process. =cut sub DESTROY { my ($o) = @_; close $o->{fd} or warn "kid exited $?"; waitpid $o->{pid}, 0; } =back =cut 1; #- Local Variables: #- mode:cperl #- tab-width:8 #- End: id='n145' href='#n145'>145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 342 343 344 345 346 347 348 349 350 351 352 353 354 355 356 357 358 359 360 361 362 363 364 365 366 367 368 369 370 371 372 373 374 375 376 377 378 379 380 381 382 383 384 385 386 387 388 389 390 391 392 393 394 395 396 397 398 399 400 401 402 403 404 405 406 407 408 409 410 411 412 413 414 415 416 417 418 419 420 421 422 423 424 425 426 427 428 429 430 431 432 433 434 435 436 437 438 439 440 441 442 443 444 445 446 447 448 449 450 451 452 453 454 455 456 457 458 459 460 461 462 463 464 465 466 467 468 469 470 471 472 473 474 475 476 477 478 479 480 481 482 483 484 485 486 487 488 489 490 491 492 493 494 495 496 497 498 499 500 501 502 503 504 505 506 507 508 509 510 511 512 513 514 515 516 517 518 519 520 521 522 523 524 525 526 527 528 529 530 531 532 533 534 535 536 537 538 539 540 541 542 543 544 545 546 547 548 549 550 551 552 553 554 555 556 557 558 559 560 561 562 563 564 565 566 567 568 569 570 571 572 573 574 575 576 577 578 579 580 581 582 583 584 585 586 587 588 589 590 591 592 593 594 595 596 597 598 599 600 601 602 603 604 605 606 607 608 609 610 611 612 613 614 615 616 617 618 619 620 621 622 623 624 625 626 627 628 629 630 631 632 633 634 635 636 637 638 639 640 641 642 643 644 645 646 647 648 649 650 651 652 653 654 655 656 657 658 659 660 661 662 663 664 665 666 667 668 669 670 671 672 673 674 675 676 677 678 679 680 681 682 683 684 685 686 687 688 689 690 691 692 693 694 695 696 697 698 699 700 701 702 703 704 705 706 707 708 709 710 711 712 713 714 715 716 717 718 719 720 721 722 723 724 725 726 727 728 729 730 731 732 733 734 735 736 737 738 739 740 741 742 743 744 745 746 747 748 749 750 751 752 753 754 755 756 757 758 759 760 761 762 763 764 765 766 767 768 769 770 771 772 773 774 775 776 777 778 779 780 781 782 783 784 785 786 787 788 789 790 791 792 793 794 795 796 797 798 799 800 801 802 803 804 805 806 807 808 809 810 811 812 813 814 815 816 817 818 819 820 821 822 823 824 825 826 827 828 829 830 831 832 833 834 835 836 837 838 839 840 841 842 843 844 845 846 847 848 849 850 851 852 853 854 855 856 857 858 859 860 861 862 863 864 865 866 867 868 869 870 871 872 873 874 875 876 877 878 879 880 881 882 883 884 885 886 887 888 889 890 891 892 893 894 895 896 897 898 899 900 901 902 903 904 905 906 907 908 909 910 911 912 913 914 915 916 917 918 919 920 921 922 923 924 925 926 927 928 929 930 931 932 933 934 935 936 937 938 939 940 941 942 943 944 945 946 947 948 949 950 951 952 953 954 955 956 957 958 959 960 961 962 963 964 965 966 967 968 969 970 971 972 973 974 975 976 977 978 979 980 981 982 983 984 985 986 987

package interactive::gtk; # $Id: gtk.pm 261628 2009-10-09 16:25:51Z tv $

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

@ISA = qw(interactive);

use interactive;
use common;
use mygtk2;
use ugtk2 qw(:helpers :wrappers :create);
use Gtk2::Gdk::Keysyms;

my $forgetTime = 1000; #- in milli-seconds

sub new {
    my $w = &interactive::new;
    ($w->{windowwidth}, $w->{windowheight}) = gtkroot()->get_size if !$::isInstall;
    $w;
}
sub enter_console { my ($o) = @_; $o->{suspended} = common::setVirtual(1) }
sub leave_console { my ($o) = @_; common::setVirtual(delete $o->{suspended}) }
sub adapt_markup { 
    #- nothing needed, the default markup is gtk2's
    my ($_o, $s) = @_; return $s;
}

sub exit { ugtk2::exit(@_) }

sub ask_fileW {
    my ($in, $common) = @_;

    my $w = ugtk2::create_file_selector(%$common);

    my $file;
    $w->main(sub { 
	$file = $w->{chooser}->get_filename;
	my $err = ugtk2::file_selected_check($common->{save}, $common->{want_a_dir}, $file);
	$err and $in->ask_warn('', $err);
	!$err;
    }) && $file;
}

sub create_boxradio {
    my ($e, $onchange_f, $double_click) = @_;

    my $boxradio = gtkpack2__(Gtk2::VBox->new,
			      my @radios = gtkradio('', @{$e->{formatted_list}}));
    my $tips = Gtk2::Tooltips->new;
    mapn {
	my ($txt, $w) = @_;
	# workaround infamous 6 years old gnome bug #101968:
	$w->child->set_size_request(mygtk2::get_label_width(), -1) if $e->{alignment} ne 'right' && !$e->{label};
	$w->signal_connect(button_press_event => $double_click) if $double_click;

	$w->signal_connect(key_press_event => $e->{may_go_to_next});
	$w->signal_connect(clicked => sub { 
	    ${$e->{val}} ne $txt or return;
	    $onchange_f->(sub { $txt });
	});
	if ($e->{help}) {
	    gtkset_tip($tips, $w,
		       ref($e->{help}) eq 'HASH' ? $e->{help}{$txt} :
		       ref($e->{help}) eq 'CODE' ? $e->{help}($txt) : $e->{help});
	}
    } $e->{list}, \@radios;

    $boxradio, sub {
	my ($v, $full_struct) = @_;
	mapn { 
	    $_[0]->set_active($_[1] eq $v);
	    $full_struct->{focus_w} = $_[0] if $_[1] eq $v;
	} \@radios, $e->{list};
    }, $radios[0];
}

sub create_treeview_list {
    my ($e, $onchange_f, $double_click) = @_;
    my $curr;

    my $list = Gtk2::ListStore->new("Glib::String");
    my $list_tv = Gtk2::TreeView->new_with_model($list);
    $list_tv->set_headers_visible(0);
    $list_tv->get_selection->set_mode('browse');
    my $textcolumn = Gtk2::TreeViewColumn->new_with_attributes(undef, my $renderer = Gtk2::CellRendererText->new, 'text' => 0);
    $list_tv->append_column($textcolumn);
    $renderer->set_property('ellipsize', 'end');
    
    my $select = sub {
	my ($path) = @_;
	return if !$list_tv->get_model;
	$list_tv->set_cursor($path, undef, 0);
	Glib::Timeout->add(100, sub { $list_tv->scroll_to_cell($path, undef, 1, 0.5, 0); 0 });
    };

    my ($starting_word, $start_reg) = ('', '^');
    my $timeout;
    $list_tv->set_enable_search(0);
    $list_tv->signal_connect(key_press_event => sub {
        my ($_w, $event) = @_;
	my $c = chr($event->keyval & 0xff);

	Glib::Source->remove($timeout) if $timeout; $timeout = '';
	
	if ($event->keyval >= 0x100) {
	    $e->{may_go_to_next}(), return 1 if member($event->keyval, ($Gtk2::Gdk::Keysyms{Return}, $Gtk2::Gdk::Keysyms{KP_Enter}));
	    $starting_word = '' if !member($event->keyval, ($Gtk2::Gdk::Keysyms{Control_L}, $Gtk2::Gdk::Keysyms{Control_R}));
	} else {
	    if (member('control-mask', @{$event->state})) {
		$c eq 's' or return 1;
		$start_reg and $start_reg = '', return 1;
		$curr++;
	    } else {
		$e->{may_go_to_next}(), return 1 if $c eq ' ';

		$curr++ if $starting_word eq '' || $starting_word eq $c;
		$starting_word .= $c unless $starting_word eq $c;
	    }
	    my @l = @{$e->{formatted_list}};
	    my $word = quotemeta $starting_word;
	    my $j; for ($j = 0; $j < @l; $j++) {
		 $l[($j + $curr) % @l] =~ /$start_reg$word/i and last;
	    }
	    if ($j == @l) {
		$starting_word = '';
	    } else {
		$select->(Gtk2::TreePath->new_from_string(($j + $curr) % @l));
	    }

	    $timeout = Glib::Timeout->add($forgetTime, sub { $timeout = $starting_word = ''; 0 });
	}
	0;
    });
    $list_tv->show;

    $list->append_set([ 0 => $_ ]) foreach @{$e->{formatted_list}};

    $list_tv->get_selection->signal_connect(changed => sub {
	my ($model, $iter) = $_[0]->get_selected;
	$model && $iter or return;
	$onchange_f->(sub {
	    my $row = $model->get_path_str($iter);
	    $e->{list}[$curr = $row];
	});
    });
    $list_tv->signal_connect(button_press_event => $double_click) if $double_click;

    $list_tv, sub {
	my ($v) = @_;
	eval {
	    my $nb = find_index { $_ eq $v } @{$e->{list}};
	    my ($old_path) = $list_tv->get_cursor;
	    if (!$old_path || $nb != $old_path->to_string) {
		$select->(Gtk2::TreePath->new_from_string($nb));
	    }
	    undef $old_path if $old_path;
	};
    };
}

sub __create_tree_model {
    my ($e) = @_;

    my $sep = quotemeta $e->{separator};
    my $tree_model = Gtk2::TreeStore->new("Glib::String", if_($e->{image2f}, "Gtk2::Gdk::Pixbuf"));

    my $build_value = sub {
	my ($v) = @_;
	my $type = 0;
	if ($e->{image2f}) {
	    my $image = $e->{image2f}->($_[0]);
	    ($type, $v) = (1, gtkcreate_pixbuf($image)) if $image; 
	}
	[ $type => $v ];
    };

    my (%wtree, $parent);
    $parent = sub {
	if (my $w = $wtree{"$_[0]$e->{separator}"}) { return $w }
	my $s = '';
	foreach (split $sep, $_[0]) {
	    $wtree{"$s$_$e->{separator}"} ||= 
	      $tree_model->append_set($s ? $parent->($s) : undef, $build_value->($_));
	    $s .= "$_$e->{separator}";
	}
	$wtree{$s};
    };

    $tree_model->{path_str_list} = [ map {
	my ($root, $leaf) = /(.*)$sep(.+)/ ? ($1, $2) : ('', $_);
	my $iter = $tree_model->append_set($parent->($root), $build_value->($leaf));

	$tree_model->get_path_str($iter);
    } @{$e->{formatted_list}} ];

    undef $_ foreach values %wtree;
    undef %wtree;

    $tree_model;
}

sub create_treeview_tree {
    my ($e, $onchange_f, $double_click) = @_;

    my $tree_model = __create_tree_model($e);
    my $tree = Gtk2::TreeView->new_with_model($tree_model);
    $tree->get_selection->set_mode('browse');
    {
	my $col = Gtk2::TreeViewColumn->new;
	$col->pack_start(my $texrender = Gtk2::CellRendererText->new, 0);
	$col->add_attribute($texrender, text => 0);
	if ($e->{image2f}) {
	    $col->pack_start(my $pixrender = Gtk2::CellRendererPixbuf->new, 0);
	    $col->add_attribute($pixrender, pixbuf => 1);
	}
	$tree->append_column($col);
    }
    $tree->set_headers_visible(0);

    my $select = sub {
	my ($path_str) = @_;
	my $path = Gtk2::TreePath->new_from_string($path_str);
	$tree->expand_to_path($path);
	$tree->set_cursor($path, undef, 0);
        gtkflush();  #- workaround gtk2 bug not honouring centering on the given row if node was closed
	$tree->scroll_to_cell($path, undef, 1, 0.5, 0);
    };

    my $curr = $tree_model->get_iter_first; #- default value
    $tree->expand_all if $e->{tree_expanded};

    my $selected_via_click;

    $tree->get_selection->signal_connect(changed => sub {
	my ($model, $iter) = $_[0]->get_selected;
	$model && $iter or return;
	undef $curr if ref $curr;
	my $path = $tree_model->get_path($curr = $iter);
	if (!$tree_model->iter_has_child($iter)) {
	    $onchange_f->(sub {
		my $path_str = $path->to_string;
		my $i = find_index { $path_str eq $_ } @{$tree_model->{path_str_list}};
		$e->{list}[$i];
	    });
	} else {
	    $tree->expand_row($path, 0) if $selected_via_click;
	}
    });
    my ($starting_word, $start_reg) = ('', "^");
    my $timeout;

    my $toggle = sub {
	if ($tree_model->iter_has_child($curr)) {
	    $tree->toggle_expansion($tree_model->get_path($curr), 0);

	} else {
	    &{$e->{may_go_to_next}};
	}
    };

    $tree->set_enable_search(0);
    $tree->signal_connect(key_press_event => sub {
        my ($_w, $event) = @_;
	$selected_via_click = 0;
	my $c = chr($event->keyval & 0xff);
	$curr or return 0;
	Glib::Source->remove($timeout) if $timeout; $timeout = '';

	if ($event->keyval >= 0x100) {
	    &$toggle and return 1 if member($event->keyval, ($Gtk2::Gdk::Keysyms{Return}, $Gtk2::Gdk::Keysyms{KP_Enter}));
	    $starting_word = '' if !member($event->keyval, ($Gtk2::Gdk::Keysyms{Control_L}, $Gtk2::Gdk::Keysyms{Control_R}));
	} else {
	    my $next;
	    if (member('control-mask', @{$event->state})) {
		$c eq "s" or return 1;
		$start_reg and $start_reg = '', return 0;
		$next = 1;
	    } else {
		&$toggle and return 1 if $c eq ' ';
		$next = 1 if $starting_word eq '' || $starting_word eq $c;
		$starting_word .= $c unless $starting_word eq $c;
	    }
	    my $word = quotemeta $starting_word;
	    my ($after, $best);

	    my $sep = quotemeta $e->{separator};
	    my $currpath = $tree_model->get_path_str($curr);
	    mapn {
		my ($path_str, $v) = @_;
		$next &&= !$after;
		$after ||= $path_str eq $currpath;
		$v =~ s/.*$sep//;
		if ($v =~ /$start_reg$word/i) {
		    if ($after && !$next) {
			($best, $after) = ($path_str, 0);
		    } else {
			$best ||= $path_str;
		    }
		}
	    } $tree_model->{path_str_list}, $e->{formatted_list};

	    if (defined $best) {
		$select->($best);
	    } else {
		$starting_word = '';
	    }

	    $timeout = Glib::Timeout->add($forgetTime, sub { $timeout = $starting_word = ''; 0 });
	}
	0;
    });
    $tree->signal_connect(button_press_event => sub {
	$selected_via_click = 1;
	&$double_click if $curr && !$tree_model->iter_has_child($curr) && $double_click;
    });

    $tree, sub {
        my $v = may_apply($e->{format}, $_[0]);
        eval {
            my $i = find_index { $v eq $_ } @{$e->{formatted_list}};

            my ($model, $iter) = $tree->get_selection->get_selected;

            my $new_path_str = $tree_model->{path_str_list}[$i];
            my $old_path_str = $model && $tree_model->get_path_str($iter);

            $select->($new_path_str) if $new_path_str ne $old_path_str;
            undef $iter if ref $iter;
        };
    };
}

#- $actions is a ref list of $action
#- $action is a { kind => $kind, action => sub { ... }, button => Gtk2::Button->new(...) }
#-   where $kind is one of '', 'modify', 'remove', 'add'
sub add_modify_remove_action {
    my ($button, $buttons, $e, $treelist) = @_;

    if (member($button->{kind}, 'modify', 'remove')) {
	@{$e->{list}} or return;
    }
    my $r = $button->{action}->(${$e->{val}});
    defined $r or return;
    
    if ($button->{kind} eq 'add') {
	${$e->{val}} = $r;
    } elsif ($button->{kind} eq 'remove') {
	${$e->{val}} = $e->{list}[0];
    }
    ugtk2::gtk_set_treelist($treelist, [ map { may_apply($e->{format}, $_) } @{$e->{list}} ]);

    add_modify_remove_sensitive($buttons, $e);
    1;
}

sub add_padding {
    my ($w) = @_;
    gtknew('HBox', children => [
        0, gtknew('Alignment', width => $mygtk2::left_padding),
        1, $w
    ]);
}  

sub create_widget {
    my ($o, $common, $e, $onchange_f, $update, $ignore_ref) = @_;

    my $onchange = sub {
	my ($f) = @_;
	sub { $onchange_f->($f, @_) };
    };

    my ($w, $real_w, $focus_w, $set);
    if ($e->{type} eq 'iconlist') {
	$w = Gtk2::Button->new;
	$set = sub {
	    gtkdestroy($e->{icon});
	    my $f = $e->{icon2f}->($_[0]);
	    $e->{icon} = -e $f ?
	      gtkcreate_img($f) :
		Gtk2::WrappedLabel->new(may_apply($e->{format}, $_[0]));
	    $w->add(gtkshow($e->{icon}));
	};
	$w->signal_connect(clicked => sub {
			       $onchange_f->(sub { next_val_in_array(${$e->{val}}, $e->{list}) });
			       $set->(${$e->{val}});
			   });
        if ($e->{alignment} eq 'right') {
            $real_w = gtknew('HButtonBox', layout => 'start', children_tight => [ $w ]);
        } else {
            $real_w = gtkpack_(Gtk2::HBox->new(0,10), 1, Gtk2::HBox->new(0,0), 0, $w, 1, Gtk2::HBox->new(0,0));
        }
    } elsif ($e->{type} eq 'bool') {
	if ($e->{image}) {
	    $w = ugtk2::gtkadd(Gtk2::CheckButton->new, gtkshow(gtkcreate_img($e->{image})));
	} else {
	    #-		warn "\"text\" member should have been used instead of \"label\" one at:\n", common::backtrace(), "\n" if $e->{label} && !$e->{text};
	    $w = Gtk2::CheckButton->new_with_label($e->{text});
	}
	$w->signal_connect(clicked => $onchange->(sub { $w->get_active }));
	$set = sub { $w->set_active($_[0]) };
        $real_w = add_padding($w);
    } elsif ($e->{type} eq 'only_label') {
        my @common = (
            # workaround infamous 6 years old gnome bug #101968:
            if_($e->{alignment} ne 'right', width => mygtk2::get_label_width())
        );
	$w = $e->{title} ? 
	         gtknew('Title2', label => escape_text_for_TextView_markup_format(${$e->{val}}), @common) :
		 gtknew($e->{alignment} eq 'right' ? 'Label_Right' : 'Label_Left',
                        line_wrap => 1, text_markup => ${$e->{val}}, @common);
    } elsif ($e->{type} eq 'label') {
	$w = gtknew('WrappedLabel', text_markup => ${$e->{val}});
	$set = sub { $w->set($_[0]) };
    } elsif ($e->{type} eq 'empty') {
	$w = gtknew('HBox', height => $e->{height});
    } elsif ($e->{type} eq 'button') {
	$w = gtknew(($e->{install_button} ? 'Install_Button' : 'Button'), 
                    text => '', clicked => $e->{clicked_may_quit_cooked});
	$set = sub {
            my $w = $w->child;
            # handle Install_Buttons:
            if (ref($w) =~ /Gtk2::HBox/) {
                ($w) = find { ref($_) =~ /Gtk2::Label/ } $w->get_children;
            }
            # guard against 'advanced' widgets that are now in their own dialog
            # (instead of in another block child of an expander):
            return if !$w;
            $w->set_label(may_apply($e->{format}, $_[0])) };
    } elsif ($e->{type} eq 'range') {
	my $adj = Gtk2::Adjustment->new(${$e->{val}}, $e->{min}, $e->{max} + ($e->{SpinButton} ? 0 : 1), 1, ($e->{max} - $e->{min}) / 10, 1);
	$w = $e->{SpinButton} ? Gtk2::SpinButton->new($adj, 10, 0) : Gtk2::HScale->new($adj);
	$w->set_size_request($e->{SpinButton} ? 100 : 200, -1);
	$w->set_digits(0);
	$adj->signal_connect(value_changed => $onchange->(sub { $adj->get_value }));
	$w->signal_connect(key_press_event => $e->{may_go_to_next});
	$set = sub { $adj->set_value($_[0]) };
    } elsif ($e->{type} eq 'expander') {
	$e->{grow} = 'fill';
	my $children = [ if_($e->{message}, { type => 'only_label', no_indent => 1, val => \$e->{message} }), @{$e->{children}} ];
	create_widgets_block($o, $common, $children, $update, $ignore_ref);
	$w = gtknew('HBox', children_tight => [
            gtknew('Install_Button', text => $e->{text},
                   clicked => sub {
                       eval { ask_fromW($o, { title => $common->{advanced_title} || $common->{title} || N("Advanced") }, $children) };
		       if (my $err = $@) {
			   die $err if $err !~ /^wizcancel/;
		       }
		   }
               )
        ]);
    } elsif ($e->{type} =~ /list/) {

	$e->{formatted_list} = [ map { may_apply($e->{format}, $_) } @{$e->{list}} ];

	if (my $actions = $e->{add_modify_remove}) {
	    my @buttons = (N_("Add"), N_("Modify"), N_("Remove"));
	    # Add Up/Down buttons if their actions are defined
            push @buttons, map { if_($actions->{$_}, 'gtk-go-' . $_) } qw(Up Down);
	    @buttons = map {
                my $button = /^gtk-/ ? gtknew('Button', image => gtknew('Image', stock => lc($_)))
                  : Gtk2::Button->new(translate($_));
		my $kind = $_;
		$kind =~ s/^gtk-go-//;
		{ kind => lc $kind, action => $actions->{$kind}, button => $button, real_kind => $_ };
	    } @buttons;
	    my $modify = find { $_->{kind} eq 'modify' } @buttons;

	    my $do_action = sub {
		my ($button) = @_;
		add_modify_remove_action($button, \@buttons, $e, $w) and $update->();
	    };

	    ($w, $set, $focus_w) = create_treeview_list($e, $onchange_f, 
							sub { $do_action->($modify) if $_[1]->type =~ /^2/ });

	    foreach my $button (@buttons) {
		$button->{button}->signal_connect(clicked => sub { $do_action->($button) });
	    }
	    add_modify_remove_sensitive(\@buttons, $e);

	    my ($images, $real_buttons) = partition { $_->{real_kind} =~ /^gtk-/ } @buttons;
	    $real_w = gtkpack_(Gtk2::HBox->new(0,0),
			       1, create_scrolled_window($w), 
			       0, gtkpack__(Gtk2::VBox->new(0,0),
                                            (map { $_->{button} } @$real_buttons),
                                            if_($images,
                                                gtknew('HButtonBox',
                                                       layout => 'spread',
                                                       children_loose => [ map { $_->{button} } @$images ]
                                                      )
                                            ),
                                        ),
                           );
	    $e->{grow} = 'expand';
	} else {
	    my $use_boxradio = exists $e->{gtk}{use_boxradio} ? $e->{gtk}{use_boxradio} : @{$e->{list}} <= 8;

	    if ($e->{help} || $use_boxradio && $e->{type} ne 'treelist') {
		#- used only when needed, as key bindings are dropped by List (ListStore does not seems to accepts Tooltips).
		($w, $set, $focus_w) = create_boxradio($e, $onchange_f, $e->{quit_if_double_click_cooked});
                $real_w = add_padding($w);
	    } elsif ($e->{type} eq 'treelist') {
		($w, $set) = create_treeview_tree($e, $onchange_f, $e->{quit_if_double_click_cooked});
	    } else {
		($w, $set, $focus_w) = create_treeview_list($e, $onchange_f, $e->{quit_if_double_click_cooked});
	    }
	    if (@{$e->{list}} > 10 || $e->{gtk}{use_scrolling}) {
		$real_w = create_scrolled_window($w);
		$e->{grow} = 'expand';
	    }
	}
    } else {
	if ($e->{type} eq "combo") {
	    my $model;

	    my @formatted_list = map { may_apply($e->{format}, $_) } @{$e->{list}};
	    $e->{formatted_list} = \@formatted_list;

	    if (!$e->{separator}) {
		if ($e->{not_edit}) {
		    $real_w = $w = Gtk2::ComboBox->new_text;
		    # FIXME: the following causes Gtk-CRITICAL but not solvable at realize time:
		    first($w->child->get_cell_renderers)->set_property('ellipsize', 'end') if !$e->{do_not_ellipsize};
		    $w->set_wrap_width($e->{gtk}{wrap_width}) if exists $e->{gtk}{wrap_width};
		} else {
		    $w = Gtk2::ComboBoxEntry->new_text;
		    ($real_w, $w) = ($w, $w->child);
		}
		$real_w->set_popdown_strings(@formatted_list);
	    } else {
		$model = __create_tree_model($e);
		$real_w = $w = Gtk2::ComboBox->new_with_model($model);

		$w->pack_start(my $texrender = Gtk2::CellRendererText->new, 0);
		$w->add_attribute($texrender, text => 0);
		if ($e->{image2f}) {
		    $w->pack_start(my $pixrender = Gtk2::CellRendererPixbuf->new, 0);
		    $w->add_attribute($pixrender, pixbuf => 1);
		}
	    }

	    my $get = sub {
		my $i = $model ? do {
		    my $s = $model->get_string_from_iter($w->get_active_iter);
		    eval { find_index { $s eq $_ } @{$model->{path_str_list}} };
		} : do {
		    my $s = $w->get_text;
		    eval { find_index { $s eq $_ } @formatted_list };
		};
		defined $i ? $e->{list}[$i] : $w->get_text;
	    };
	    $w->signal_connect(changed => $onchange->($get));

	    $set = sub {
		my $s = may_apply($e->{format}, $_[0]);
		if ($model) {
		    eval {
			my $i = find_index { $s eq $_ } @{$e->{formatted_list}};
			my $path_str = $model->{path_str_list}[$i];
			$w->set_active_iter($model->get_iter_from_string($path_str));
		    };
		} else {
		    $w->set_text($s) if $s ne $w->get_text && $_[0] ne $w->get_text;
		}
	    };
	} else {
	    if ($e->{weakness_check}) {
		$w = gtknew('WeaknessCheckEntry');
	    }
	    else {
		$w = Gtk2::Entry->new;
	    }
	    $w->signal_connect(changed => $onchange->(sub { $w->get_text }));
	    $w->signal_connect(focus_in_event => sub { $w->select_region(0, -1) });
	    $w->signal_connect(focus_out_event => sub { $w->select_region(0, 0) });
	    $set = sub { $w->set_text($_[0]) if $_[0] ne $w->get_text };
	    if ($e->{type} eq 'file') {
		my $button = gtksignal_connect(Gtk2::Button->new_from_stock('gtk-open'), clicked => sub {
						   my $file = $o->ask_fileW({
                                                       title => $e->{label},
                                                       want_a_dir => to_bool($e->{want_a_dir}),
                                                   });
						   $set->($file) if $file;
					       });
		$real_w = gtkpack_(Gtk2::HBox->new(0,0), 1, $w, 0, $button);
	    }
	}
	$w->signal_connect(key_press_event => $e->{may_go_to_next});
	if ($e->{hidden}) {
	    $w->set_visibility(0);
	    $w->signal_connect(key_press_event => sub {
		my (undef, $event) = @_;
		if (!$o->{capslock_warned} && member('lock-mask', @{$event->state}) && !$w->get_text) {
		    $o->{capslock_warned} = 1;
		    $o->ask_warn('', N("Beware, Caps Lock is enabled"));
		}
		0;
	    });
	}
    }

    if (my $focus_out = $e->{focus_out}) {
	$w->signal_connect(focus_out_event => sub { $update->($focus_out) });
    }
    $real_w ||= $w;

    $e->{w} = $w;
    $e->{real_w} = $real_w;
    $e->{focus_w} = $focus_w || $w if $e->{type} ne 'empty';
    $e->{set} = $set || sub {};
}

sub all_entries {
    my ($l) = @_;
    map { $_, if_($_->{children}, @{$_->{children}}) } @$l;
}

sub all_focusable_entries {
    my ($l) = @_;
    grep { $_->{focus_w} } @$l;
}

sub all_title_entries {
    my ($l) = @_;
    grep { $_->{title} } @$l;
}

sub create_widgets_block {
    my ($o, $common, $l, $update, $ignore_ref) = @_;

    my $label_sizegrp = Gtk2::SizeGroup->new('horizontal');
    my $right_label_sizegrp = Gtk2::SizeGroup->new('horizontal');
    my $realw_sizegrp = Gtk2::SizeGroup->new('horizontal');

    @$l = map_index {
	if ($::i && ($_->{type} eq 'expander' || $_->{title})) {
	    ({ type => 'empty', height => 4 }, $_);
	} else {
	    $_;
	}
    } @$l;

    foreach my $e (@$l) {
	my $onchange_f = sub {
	    my ($f, @para) = @_;
	    return if $$ignore_ref;
	    ${$e->{val}} = $f->(@para); 
	    $update->($e->{changed});
	};

	create_widget($o, $common, $e, $onchange_f, $update, $ignore_ref);

	my $label_w;
	if ($e->{label} || !$e->{no_indent}) {
	    $label_w = gtknew($e->{alignment} eq 'right' ? 'Label_Right' : 'Label_Left', text_markup => $e->{label} || '',
			      size_group => ($e->{alignment} eq 'right' ? $right_label_sizegrp : $label_sizegrp),
                          );
            $realw_sizegrp->add_widget($e->{real_w});
	}

	if ($e->{do_not_expand}) {
            $e->{real_w} = gtknew('HBox', children => [
                0, $e->{real_w},
                1, gtknew('Label'),
            ]);
	}

	my $eater = if_($e->{alignment} eq 'right' && !$label_w, gtknew('Label'));

	$e->{real_w} = gtkpack_(Gtk2::HBox->new,
				if_($e->{icon}, 0, eval { gtkcreate_img($e->{icon}) }),
				if_($eater, 1, $eater),
				if_($label_w, $e->{alignment} eq 'right', $label_w),
				(!$eater, $e->{real_w}),
			    );
    }
    gtknew('VBox', children => [ map { $_->{grow} || 0, $_->{real_w} } @$l ]);
}

sub create_widgets {
    my ($o, $common, $mainw, $l) = @_;

    my $ignore = 0; #-to handle recursivity
    my $set_all = sub {
	$ignore = 1;
	my @all = all_entries($l);
	$_->{set}->(${$_->{val}}, $_) foreach @all; #- nb: the parameter "$_" is needed for create_boxradio
	$_->{disabled} and $_->{real_w}->set_sensitive(!$_->{disabled}()) foreach @all;
	$_->{hidden} and $_->{w}->set_visibility(!(ref($_->{hidden}) eq 'CODE' ? $_->{hidden}() : $_->{hidden})) foreach @all;
	$mainw->{ok}->set_sensitive(!$common->{ok_disabled}()) if $common->{ok_disabled};
	$ignore = 0;
    };
    my $update = sub {
	my ($f) = @_;
	return if $ignore;
	$f->() if $f;
	$set_all->();
    };

    my $ok_clicked = sub { 
	!$mainw->{ok} || $mainw->{ok}->get_property('sensitive') or return;
	$mainw->{retval} = 1;
	Gtk2->main_quit;
    };

    my @all = all_entries($l);
    foreach (@all) {
	my $e = $_; #- for closures

	# we only consider real widgets (aka ignoring labels and Help/Release Notes/... buttons):
	if ((grep { !$_->{install_button} && $_->{type} ne 'only_label' } @all) == 1 || $e->{quit_if_double_click}) {
	    #- i'm the only one, double click means accepting
	    $e->{quit_if_double_click_cooked} = sub { $_[1]->type =~ /^2/ && $ok_clicked->() };
	}

	if ($e->{clicked_may_quit}) {
	    $e->{clicked_may_quit_cooked} = sub {
		$mainw->{rwindow}->hide;
		if (my $v = $e->{clicked_may_quit}()) {
		    $mainw->{retval} = $v;
		    Gtk2->main_quit;
		}
		$mainw->{rwindow}->show;
		$update->();
	    };
	}

	$e->{may_go_to_next} = sub {
	    my (undef, $event) = @_;
	    if (!$event || ($event->keyval & 0x7f) == 0xd) {
		my @current_all = all_focusable_entries($l);
		my $ind = eval { find_index { $_ == $e } @current_all };
		if (my $e_ = $current_all[$ind+1]) {
		    $e_->{focus_w}->grab_focus;
		} else {
		    @current_all == 1 ? $ok_clicked->() : $mainw->{ok}->grab_focus;
		}
		1; #- prevent an action on the just grabbed focus
	    } else {
		0;
	    }
	};
    }

    # add asterisks before titles when there're more than one:
    my @all_titles = all_title_entries($l);
    if (2 <= @all_titles) {
        ${$_->{val}} = mygtk2::asteriskize(${$_->{val}}) foreach @all_titles;
    }

    my $box = create_widgets_block($o, $common, $l, $update, \$ignore);

    my $tooltips = Gtk2::Tooltips->new;
    foreach my $e (@all) {
	$tooltips->set_tip($e->{w}, $e->{help}) if $e->{help} && !ref($e->{help});
    }

    $box, $set_all;
}

sub add_modify_remove_sensitive {
    my ($buttons, $e) = @_;
    $_->{button}->set_sensitive(@{$e->{list}} != ()) foreach 
      grep { member($_->{kind}, 'modify', 'remove') } @$buttons;
}

sub filter_widgets {
    my ($l) = @_;

    foreach my $e (all_entries($l)) {
	$e->{no_indent} = 1 if member($e->{type}, 'list', 'treelist', 'expander', 'bool', 'only_label');
    }
}

my $help_path = "/usr/share/doc/installer-help/";

sub is_help_file_exist {
    my ($_o, $id) = @_;
    # just ignore anchors:
    $id =~ s/#.*//;
    -e "$help_path/$id.html";
}

sub load_from_uri {
    my ($view, $url) = @_;
    $view->open(get_html_file($::o, $url));
}

sub get_html_file {
    my ($o, $url) = @_;
    my $anchor;
    ($url, $anchor) = $url =~ /(.*)#(.*)/ if $url =~ /#/;
    $url .= '.html' if $url !~ /\.html$/;
    $url = find { -e $_ } map { "$help_path/${_}" }
      map {
          my $id = $_;
          require lang;
          map { ("$_/$id") } map { $_, lc($_) } (split ':', lang::getLANGUAGE($o->{locale}{lang})), '';
      } $url;
    $url = "file://$url";
    $anchor ? "$url#$anchor" : $url;
}

sub display_help {
    my ($o, $common, $mainw) = @_;
    if (my $file = $common->{interactive_help_id}) {
        require Gtk2::WebKit;
        my $view = gtknew('WebKit_View');

        load_from_uri($view, $file);

        my $w = ugtk2->new(N("Help"), transient => $mainw->{real_window}, modal => 1);
        gtkadd($w->{rwindow},
               gtkpack_(Gtk2::VBox->new,
                        1, create_scrolled_window(gtkset_border_width($view, 5),
                                                  [ 'never', 'automatic' ],
                                              ),
                        0, Gtk2::HSeparator->new,
                        0, gtkpack(create_hbox('end'),
                                   gtknew('Button', text => N("Close"), clicked => sub { Gtk2->main_quit })
                               ),
                    ),
           );
        mygtk2::set_main_window_size($w->{rwindow});
        $w->{real_window}->grab_focus;
        $w->{real_window}->show_all;
        $w->main;
        return;
    } elsif (my $message = $common->{interactive_help}->()) {
        $o->ask_warn(N("Help"), $message);
    }
}

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

    filter_widgets($l);

    my $mainw = ugtk2->new($common->{title}, %$o, if__($::main_window, transient => $::main_window),
                           if_($common->{icon}, icon => $common->{icon}), banner_title => $common->{banner_title},
		       );
 
    my ($box, $set_all) = create_widgets($o, $common, $mainw, $l);

    $mainw->{box_allow_grow} = 1;
    my $pack = create_box_with_title($mainw, @{$common->{messages}});
    mygtk2::set_main_window_size($mainw->{rwindow}) if $mainw->{pop_it} && !$common->{auto_window_size} && (@$l || $mainw->{box_size} == 200);

    my @more_buttons = (
			if_($common->{interactive_help} || $common->{interactive_help_id}, 
                            [ gtknew('Install_Button', text => N("Help"),
                                     clicked => sub { display_help($o, $common, $mainw) }), undef, 1 ]),
			if_($common->{more_buttons}, @{$common->{more_buttons}}),
		       );
    my $buttons_pack = ($common->{ok} || !exists $common->{ok}) && $mainw->create_okcancel($common->{ok}, $common->{cancel}, '', @more_buttons);

    gtkpack_($pack, 1, gtknew('ScrolledWindow', shadow_type => 'none', child => $box)) if @$l;
	    
    if ($buttons_pack) {
	$pack->pack_end(gtkshow($buttons_pack), 0, 0, 0);
    }
    ugtk2::gtkadd($mainw->{window}, $pack);
    $set_all->();

    my $entry_to_focus = find { $_->{focus} && $_->{focus}() } @$l;
    my $widget_to_focus = $entry_to_focus ? $entry_to_focus->{focus_w} :
                          $common->{focus_cancel} ? $mainw->{cancel} :
			    @$l && (!$mainw->{ok} || @$l == 1 && member(ref($l->[0]{focus_w}), "Gtk2::TreeView", "Gtk2::RadioButton")) ? 
			      $l->[0]{focus_w} : 
			      $mainw->{ok};
    $widget_to_focus->grab_focus if $widget_to_focus;

    my $validate = sub {
	my @all = all_entries($l);
	my $e = find { $_->{validate} && !$_->{validate}->() } @all;
	$e ||= $common->{validate} && !$common->{validate}() && $all[0];
	if ($e) {
	    $set_all->();
	    $e->{focus_w}->grab_focus;
	}
	!$e;
    };

    $mainw->main($validate);
}


sub ask_browse_tree_info_refW {
    my ($o, $common) = @_;
    add2hash($common, { wait_message => sub { $o->wait_message(@_) } });
    ugtk2::ask_browse_tree_info($common);
}


sub ask_from__add_modify_removeW {
    my ($o, $title, $message, $l, %callback) = @_;

    my $e = $l->[0];
    my $chosen_element;
    put_in_hash($e, { allow_empty_list => 1, gtk => { use_boxradio => 0 }, sort => 0,
		      val => \$chosen_element, type => 'list', add_modify_remove => \%callback });

    $o->ask_from($title, $message, $l, %callback);
}

my $reuse_timeout;

sub wait_messageW {
    my ($o, $title, $message, $message_modifiable) = @_;

    my $to_modify = Gtk2::Label->new(scalar warp_text(ref $message_modifiable ? '' : $message_modifiable));

    Glib::Source->remove($reuse_timeout) if $reuse_timeout; $reuse_timeout = '';

    my $Window = gtknew('MagicWindow',
			title => $title,
			pop_it => defined $o->{pop_wait_messages} ? $o->{pop_wait_messages} : 1, 
			pop_and_reuse => $::isInstall,
			modal => 1, 
			$::isInstall ? (banner => gtknew('Install_Title', text => $message)) : (),
			no_Window_Manager => exists $o->{no_Window_Manager} ? $o->{no_Window_Manager} : !$::isStandalone,
			child => gtknew('VBox', padding => 4, border_width => 10, children => [
			    1, $to_modify,
			    if_(ref($message_modifiable), 0, $message_modifiable),
			]),
		      );
    mygtk2::enable_sync_flush($Window);
    $Window->{wait_messageW} = $to_modify;
    mygtk2::sync_flush($Window);
    $Window;
}
sub wait_message_nextW {
    my ($_o, $message, $Window) = @_;
    return if $message eq $Window->{wait_messageW}->get_text; #- needed otherwise no expose_event :(
    $Window->{displayed} = 0;
    $Window->{wait_messageW}->set($message);
    mygtk2::sync($Window) while !$Window->{displayed};
}
sub wait_message_endW {
    my ($_o, $Window) = @_;
    if ($Window->{pop_and_reuse}) {
	$reuse_timeout = Glib::Timeout->add(100, sub {
	    mygtk2::destroy_previous_popped_and_reuse_window();
	});
    } else {
	mygtk2::may_destroy($Window);
	mygtk2::flush();
    }
}

sub wait_message_with_progress_bar {
    my ($in, $o_title) = @_;

    my $progress = gtknew('ProgressBar');
    my $w = $in->wait_message($o_title, $progress);
    my $displayed;
    $progress->signal_connect(expose_event => sub { $displayed = 1; 0 });
    $w, sub {
	my ($msg, $current, $total) = @_;
	if ($msg) {
	    $w->set($msg);
	}

	if ($total) {
	    $progress or internal_error('You must first give some text to display');
	    my $fraction = min(1, $current / $total);
	    if ($fraction != $progress->get_fraction) {
		$progress->set_fraction($fraction);
		$progress->show;
		$displayed = 0;
		mygtk2::flush() while !$displayed;
	    }
	} else {
	    $progress->hide;
	    mygtk2::flush();
	}
    };
}

sub kill {
    my ($_o) = @_;
    $_->destroy foreach $::WizardTable ? $::WizardTable->get_children : (), @tempory::objects;
    @tempory::objects = ();
}

1;