loncom/interface/lonnavmaps.pm - diff

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Diff for /loncom/interface/lonnavmaps.pm between versions 1.493 and 1.509.2.10

version 1.493, 2012/12/30 16:05:15	version 1.509.2.10, 2019/02/07 00:49:53
Line 486 use Apache::lonlocal;	Line 486 use Apache::lonlocal;
use Apache::lonnet;	use Apache::lonnet;
use Apache::lonmap;	use Apache::lonmap;

use POSIX qw (floor strftime);	use POSIX qw (ceil floor strftime);
use Time::HiRes qw( gettimeofday tv_interval );	use Time::HiRes qw( gettimeofday tv_interval );
use LONCAPA;	use LONCAPA;
use DateTime();	use DateTime();
Line 494 use HTML::Entities;	Line 494 use HTML::Entities;

# For debugging	# For debugging

use Data::Dumper;	#use Data::Dumper;


# symbolic constants	# symbolic constants
Line 619 sub getDescription {	Line 619 sub getDescription {
return &mt("Having technical difficulties; please check status later");	return &mt("Having technical difficulties; please check status later");
}	}
if ($status == $res->NOTHING_SET) {	if ($status == $res->NOTHING_SET) {
return &Apache::lonhtmlcommon::direct_parm_link(&mt("Not currently assigned.",$res->symb(),'opendate'),$part);	return &Apache::lonhtmlcommon::direct_parm_link(&mt('Not currently assigned'),$res->symb(),'opendate',$part);
}	}
if ($status == $res->OPEN_LATER) {	if ($status == $res->OPEN_LATER) {
return &mt("Open [_1]",&Apache::lonhtmlcommon::direct_parm_link(&timeToHumanString($open,'start'),$res->symb(),'opendate',$part));	return &mt("Open [_1]",&Apache::lonhtmlcommon::direct_parm_link(&timeToHumanString($open,'start'),$res->symb(),'opendate',$part));
}	}
	my $slotinfo;
if ($res->simpleStatus($part) == $res->OPEN) {	if ($res->simpleStatus($part) == $res->OPEN) {
unless (&Apache::lonnet::allowed('mgr',$env{'request.course.id'})) {	unless (&Apache::lonnet::allowed('mgr',$env{'request.course.id'})) {
my ($slot_status,$slot_time,$slot_name)=$res->check_for_slot($part);	my ($slot_status,$slot_time,$slot_name)=$res->check_for_slot($part);
	my $slotmsg;
if ($slot_status == $res->UNKNOWN) {	if ($slot_status == $res->UNKNOWN) {
return &mt('Reservation status unknown');	$slotmsg = &mt('Reservation status unknown');
} elsif ($slot_status == $res->RESERVED) {	} elsif ($slot_status == $res->RESERVED) {
return &mt('Reserved - ends [_1]',	$slotmsg = &mt('Reserved - ends [_1]',
timeToHumanString($slot_time,'end'));	timeToHumanString($slot_time,'end'));
} elsif ($slot_status == $res->RESERVED_LOCATION) {	} elsif ($slot_status == $res->RESERVED_LOCATION) {
return &mt('Reserved - specific location(s) - ends [_1]',	$slotmsg = &mt('Reserved - specific location(s) - ends [_1]',
timeToHumanString($slot_time,'end'));	timeToHumanString($slot_time,'end'));
} elsif ($slot_status == $res->RESERVED_LATER) {	} elsif ($slot_status == $res->RESERVED_LATER) {
return &mt('Reserved - next open [_1]',	$slotmsg = &mt('Reserved - next open [_1]',
timeToHumanString($slot_time,'start'));	timeToHumanString($slot_time,'start'));
} elsif ($slot_status == $res->RESERVABLE) {	} elsif ($slot_status == $res->RESERVABLE) {
return &mt('Reservable, reservations close [_1]',	$slotmsg = &mt('Reservable, reservations close [_1]',
	timeToHumanString($slot_time,'end'));
	} elsif ($slot_status == $res->NEEDS_CHECKIN) {
	$slotmsg = &mt('Reserved, check-in needed - ends [_1]',
timeToHumanString($slot_time,'end'));	timeToHumanString($slot_time,'end'));
} elsif ($slot_status == $res->RESERVABLE_LATER) {	} elsif ($slot_status == $res->RESERVABLE_LATER) {
return &mt('Reservable, reservations open [_1]',	$slotmsg = &mt('Reservable, reservations open [_1]',
timeToHumanString($slot_time,'start'));	timeToHumanString($slot_time,'start'));
} elsif ($slot_status == $res->NOT_IN_A_SLOT) {	} elsif ($slot_status == $res->NOT_IN_A_SLOT) {
return &mt('Reserve a time/place to work');	$slotmsg = &mt('Reserve a time/place to work');
} elsif ($slot_status == $res->NOTRESERVABLE) {	} elsif ($slot_status == $res->NOTRESERVABLE) {
return &mt('Reservation not available');	$slotmsg = &mt('Reservation not available');
} elsif ($slot_status == $res->WAITING_FOR_GRADE) {	} elsif ($slot_status == $res->WAITING_FOR_GRADE) {
return &mt('Submission in grading queue');	$slotmsg = &mt('Submission in grading queue');
	}
	if ($slotmsg) {
	if ($res->is_task() \|\| !$due) {
	return $slotmsg;
	}
	$slotinfo = (' ' x 2).'('.$slotmsg.')';
}	}
}	}
}	}
if ($status == $res->OPEN) {	if ($status == $res->OPEN) {
if ($due) {	if ($due) {
if ($res->is_practice()) {	if ($res->is_practice()) {
return &mt("Closes [_1]",&Apache::lonhtmlcommon::direct_parm_link(&timeToHumanString($due,'start'),$res->symb(),'duedate',$part));	return &mt("Closes [_1]",&Apache::lonhtmlcommon::direct_parm_link(&timeToHumanString($due,'start'),$res->symb(),'duedate',$part)).$slotinfo;
} else {	} else {
return &mt("Due [_1]",&Apache::lonhtmlcommon::direct_parm_link(&timeToHumanString($due,'end'),$res->symb(),'duedate',$part));	return &mt("Due [_1]",&Apache::lonhtmlcommon::direct_parm_link(&timeToHumanString($due,'end'),$res->symb(),'duedate',$part)).$slotinfo;
}	}
} else {	} else {
return &Apache::lonhtmlcommon::direct_parm_link(&mt("Open, no due date"),$res->symb(),'duedate',$part);	return &Apache::lonhtmlcommon::direct_parm_link(&mt("Open, no due date"),$res->symb(),'duedate',$part).$slotinfo;
}	}
}	}
if ($status == $res->PAST_DUE_ANSWER_LATER) {	if ($status == $res->PAST_DUE_ANSWER_LATER) {
Line 907 sub render_resource {	Line 918 sub render_resource {
my $nonLinkedText = ''; # stuff after resource title not in link	my $nonLinkedText = ''; # stuff after resource title not in link

my $link = $params->{"resourceLink"};	my $link = $params->{"resourceLink"};
	if ($resource->ext()) {
	$link =~ s/\#.+(\?)/$1/g;
	}

# The URL part is not escaped at this point, but the symb is...	# The URL part is not escaped at this point, but the symb is...

Line 927 sub render_resource {	Line 941 sub render_resource {
# links to open and close the folder	# links to open and close the folder

my $whitespace = $location.'/whitespace_21.gif';	my $whitespace = $location.'/whitespace_21.gif';
my $linkopen = "<img src='$whitespace' alt='' />"."<a href=\"$link\">";	my $linkopen = "<img src='$whitespace' alt='' />";
	my $nomodal;
	if (($params->{'modalLink'}) && (!$resource->is_sequence())) {
	if ($link =~m{^(?:\|/adm/wrapper)/ext/([^#]+)}) {
	my $exturl = $1;
	if (($ENV{'SERVER_PORT'} == 443) && ($exturl !~ /^https:/)) {
	$nomodal = 1;
	}
	} elsif (($link eq "/public/$LONCAPA::match_domain/$LONCAPA::match_courseid/syllabus") &&
	($env{'request.course.id'}) && ($ENV{'SERVER_PORT'} == 443) &&
	($env{'course.'.$env{'request.course.id'}.'.externalsyllabus'} =~ m{^http://})) {
	$nomodal = 1;
	}
	my $esclink = &js_escape($link);
	if ($nomodal) {
	$linkopen .= "<a href=\"#\" onclick=\"javascript:window.open('$esclink','resourcepreview','height=400,width=500,scrollbars=1,resizable=1,menubar=0,location=1'); return false;\" />";
	} else {
	$linkopen .= "<a href=\"$link\" onclick=\"javascript:openMyModal('$esclink',600,500,'yes','true'); return false;\">";
	}
	} else {
	$linkopen .= "<a href=\"$link\">";
	}
my $linkclose = "</a>";	my $linkclose = "</a>";

# Default icon: unknown page	# Default icon: unknown page
Line 981 sub render_resource {	Line 1016 sub render_resource {
# Don't allow users to manipulate folder	# Don't allow users to manipulate folder
$icon = "navmap.$folderType." . ($nowOpen ? 'closed' : 'open') . '.gif';	$icon = "navmap.$folderType." . ($nowOpen ? 'closed' : 'open') . '.gif';
$icon = "<img class=\"LC_space\" src='$whitespace' alt='' />"."<img class=\"LC_contentImage\" src='$location/$icon' alt=\"".($nowOpen ? &mt('Open Folder') : &mt('Close Folder')).' '.$title."\" />";	$icon = "<img class=\"LC_space\" src='$whitespace' alt='' />"."<img class=\"LC_contentImage\" src='$location/$icon' alt=\"".($nowOpen ? &mt('Open Folder') : &mt('Close Folder')).' '.$title."\" />";
	if ($params->{'caller'} eq 'sequence') {
$linkopen = "";	$linkopen = "<a href=\"$link\">";
$linkclose = "";	} else {
	$linkopen = "";
	$linkclose = "";
	}
}	}
if ((&Apache::lonnet::allowed('mdc',$env{'request.course.id'})) &&	if (((&Apache::lonnet::allowed('mdc',$env{'request.course.id'})) \|\|
	(&Apache::lonnet::allowed('cev',$env{'request.course.id'}))) &&
($resource->symb=~/\_\_\_[^\_]+\_\_\_uploaded/)) {	($resource->symb=~/\_\_\_[^\_]+\_\_\_uploaded/)) {
if (!$params->{'map_no_edit_link'}) {	if (!$params->{'map_no_edit_link'}) {
my $icon = &Apache::loncommon::lonhttpdurl('/res/adm/pages').'/editmap.png';	my $icon = &Apache::loncommon::lonhttpdurl('/res/adm/pages').'/editmap.png';
$editmapLink=' '.	$editmapLink=' '.
'<a href="/adm/coursedocs?command=directnav&symb='.&escape($resource->symb()).'">'.	'<a href="/adm/coursedocs?command=directnav&symb='.&escape($resource->symb()).'">'.
'<img src="'.$icon.'" alt="'.&mt('Edit Content').'" title="'.&mt('Edit Content').'" />'.	'<img src="'.$icon.'" alt="'.&mt('Edit Content').'" title="'.&mt('Edit Content').'" />'.
'</a>';	'</a>';
}	}
}	}
}	if ($params->{'mapHidden'} \|\| $resource->randomout()) {
	$nonLinkedText .= ' <span class="LC_warning">('.&mt('hidden').')</span> ';
if ($resource->randomout()) {	}
$nonLinkedText .= ' <span class="LC_warning">('.&mt('hidden').')</span> ';	} else {
	if ($resource->randomout()) {
	$nonLinkedText .= ' <span class="LC_warning">('.&mt('hidden').')</span> ';
	}
}	}
if (!$resource->condval()) {	if (!$resource->condval()) {
$nonLinkedText .= ' <span class="LC_info">('.&mt('conditionally hidden').')</span> ';	$nonLinkedText .= ' <span class="LC_info">('.&mt('conditionally hidden').')</span> ';
Line 1048 sub render_resource {	Line 1090 sub render_resource {
}	}

if (!$params->{'resource_nolink'} && !$resource->is_sequence() && !$resource->is_empty_sequence) {	if (!$params->{'resource_nolink'} && !$resource->is_sequence() && !$resource->is_empty_sequence) {
$result .= "$curMarkerBegin<a href=\"$link\">$title$partLabel</a>$curMarkerEnd$editmapLink$nonLinkedText</td>";	$linkclose = '</a>';
} else {	if ($params->{'modalLink'}) {
$result .= "$curMarkerBegin$linkopen$title$partLabel</a>$curMarkerEnd$editmapLink$nonLinkedText</td>";	my $esclink = &js_escape($link);
	if ($nomodal) {
	$linkopen = "<a href=\"#\" onclick=\"javascript:window.open('$esclink','resourcepreview','height=400,width=500,scrollbars=1,resizable=1,menubar=0,location=1'); return false;\" />";
	} else {
	$linkopen = "<a href=\"$link\" onclick=\"javascript:openMyModal('$esclink',600,500,'yes','true'); return false;\">";
	}
	} else {
	$linkopen = "<a href=\"$link\">";
	}
}	}
	$result .= "$curMarkerBegin$linkopen$title$partLabel$linkclose$curMarkerEnd$editmapLink$nonLinkedText</td>";

return $result;	return $result;
}	}
Line 1140 sub render_long_status {	Line 1191 sub render_long_status {
my $info = '';	my $info = '';
if ($resource->is_problem() \|\| $resource->is_practice()) {	if ($resource->is_problem() \|\| $resource->is_practice()) {
$color = $colormap{$resource->status};	$color = $colormap{$resource->status};

if (dueInLessThan24Hours($resource, $part) \|\|	if (dueInLessThan24Hours($resource, $part)) {
lastTry($resource, $part)) {
$color = $hurryUpColor;	$color = $hurryUpColor;
$info = ' title="'.&mt('Due in less than 24 hours!').'"';	$info = ' title="'.&mt('Due in less than 24 hours!').'"';
}	} elsif (lastTry($resource, $part)) {
	unless (($resource->problemstatus($part) eq 'no') \|\|
	($resource->problemstatus($part) eq 'no_feedback_ever')) {
	$color = $hurryUpColor;
	$info = ' title="'.&mt('One try remaining!').'"';
	}
	}
}	}

if ($resource->kind() eq "res" &&	if ($resource->kind() eq "res" &&
Line 1337 sub render {	Line 1393 sub render {
my $currenturl = $env{'form.postdata'};	my $currenturl = $env{'form.postdata'};
#$currenturl=~s/^http\:\/\///;	#$currenturl=~s/^http\:\/\///;
#$currenturl=~s/^[^\/]+//;	#$currenturl=~s/^[^\/]+//;
	unless ($args->{'caller'} eq 'sequence') {
$here = $jump = &Apache::lonnet::symbread($currenturl);	$here = $jump = &Apache::lonnet::symbread($currenturl);
	}
}	}
if ($here eq '') {	if (($here eq '') && ($args->{'caller'} ne 'sequence')) {
my $last;	my $last;
if (tie(my %hash,'GDBM_File',$env{'request.course.fn'}.'_symb.db',	if (tie(my %hash,'GDBM_File',$env{'request.course.fn'}.'_symb.db',
&GDBM_READER(),0640)) {	&GDBM_READER(),0640)) {
Line 1400 sub render {	Line 1457 sub render {
if ($args->{'iterator_map'}) {	if ($args->{'iterator_map'}) {
my $map = $args->{'iterator_map'};	my $map = $args->{'iterator_map'};
$map = $navmap->getResourceByUrl($map);	$map = $navmap->getResourceByUrl($map);
my $firstResource = $map->map_start();	if (ref($map)) {
my $finishResource = $map->map_finish();	my $firstResource = $map->map_start();
	my $finishResource = $map->map_finish();
$args->{'iterator'} = $it = $navmap->getIterator($firstResource, $finishResource, $filterHash, $condition);	$args->{'iterator'} = $it = $navmap->getIterator($firstResource, $finishResource, $filterHash, $condition);
	} else {
	return;
	}
} else {	} else {
$args->{'iterator'} = $it = $navmap->getIterator(undef, undef, $filterHash, $condition,undef,$args->{'include_top_level_map'});	$args->{'iterator'} = $it = $navmap->getIterator(undef, undef, $filterHash, $condition,undef,$args->{'include_top_level_map'});
}	}
Line 1522 END	Line 1582 END
$result.='</form>';	$result.='</form>';
}	}
if (($args->{'caller'} eq 'navmapsdisplay') &&	if (($args->{'caller'} eq 'navmapsdisplay') &&
(&Apache::lonnet::allowed('mdc',$env{'request.course.id'}))) {	((&Apache::lonnet::allowed('mdc',$env{'request.course.id'})) \|\|
	(&Apache::lonnet::allowed('cev',$env{'request.course.id'})))) {
my $cdom = $env{'course.'.$env{'request.course.id'}.'.domain'};	my $cdom = $env{'course.'.$env{'request.course.id'}.'.domain'};
my $cnum = $env{'course.'.$env{'request.course.id'}.'.num'};	my $cnum = $env{'course.'.$env{'request.course.id'}.'.num'};
if ($env{'course.'.$env{'request.course.id'}.'.url'} eq	if ($env{'course.'.$env{'request.course.id'}.'.url'} eq
Line 1568 END	Line 1629 END
$args->{'indentString'} = setDefault($args->{'indentString'}, "<img src='$location' alt='' />");	$args->{'indentString'} = setDefault($args->{'indentString'}, "<img src='$location' alt='' />");
$args->{'displayedHereMarker'} = 0;	$args->{'displayedHereMarker'} = 0;

# If we're suppressing empty sequences, look for them here. Use DFS for speed,	# If we're suppressing empty sequences, look for them here.
# since structure actually doesn't matter, except what map has what resources.	# We also do this even if $args->{'suppressEmptySequences'}
if ($args->{'suppressEmptySequences'}) {	# is not true, so we can hide empty sequences for which the
my $dfsit = Apache::lonnavmaps::DFSiterator->new($navmap,	# hiddenresource parameter is set to yes (at map level), or
$it->{FIRST_RESOURCE},	# mark as hidden for users who have $userCanSeeHidden.
$it->{FINISH_RESOURCE},	# Use DFS for speed, since structure actually doesn't matter,
{}, undef, 1);	# except what map has what resources.
my $depth = 0;
$dfsit->next();	my $dfsit = Apache::lonnavmaps::DFSiterator->new($navmap,
my $curRes = $dfsit->next();	$it->{FIRST_RESOURCE},
while ($depth > -1) {	$it->{FINISH_RESOURCE},
if ($curRes == $dfsit->BEGIN_MAP()) { $depth++; }	{}, undef, 1);
if ($curRes == $dfsit->END_MAP()) { $depth--; }
	my $depth = 0;
if (ref($curRes)) {	$dfsit->next();
# Parallel pre-processing: Do sequences have non-filtered-out children?	my $curRes = $dfsit->next();
if ($curRes->is_map()) {	while ($depth > -1) {
$curRes->{DATA}->{HAS_VISIBLE_CHILDREN} = 0;	if ($curRes == $dfsit->BEGIN_MAP()) { $depth++; }
# Sequences themselves do not count as visible children,	if ($curRes == $dfsit->END_MAP()) { $depth--; }
# unless those sequences also have visible children.
# This means if a sequence appears, there's a "promise"	if (ref($curRes)) {
# that there's something under it if you open it, somewhere.	# Parallel pre-processing: Do sequences have non-filtered-out children?
} else {	if ($curRes->is_map()) {
# Not a sequence: if it's filtered, ignore it, otherwise	$curRes->{DATA}->{HAS_VISIBLE_CHILDREN} = 0;
# rise up the stack and mark the sequences as having children	# Sequences themselves do not count as visible children,
if (&$filterFunc($curRes)) {	# unless those sequences also have visible children.
for my $sequence (@{$dfsit->getStack()}) {	# This means if a sequence appears, there's a "promise"
$sequence->{DATA}->{HAS_VISIBLE_CHILDREN} = 1;	# that there's something under it if you open it, somewhere.
}	} elsif ($curRes->src()) {
	# Not a sequence: if it's filtered, ignore it, otherwise
	# rise up the stack and mark the sequences as having children
	if (&$filterFunc($curRes)) {
	for my $sequence (@{$dfsit->getStack()}) {
	$sequence->{DATA}->{HAS_VISIBLE_CHILDREN} = 1;
}	}
}	}
}	}
} continue {
$curRes = $dfsit->next();
}	}
	} continue {
	$curRes = $dfsit->next();
}	}

my $displayedJumpMarker = 0;	my $displayedJumpMarker = 0;
Line 1661 END	Line 1727 END
}	}


	my $inhibitmenu;
	if ($args->{'modalLink'}) {
	$inhibitmenu = '&inhibitmenu=yes';
	}

while (1) {	while (1) {
if ($args->{'sort'}) {	if ($args->{'sort'}) {
$curRes = shift(@resources);	$curRes = shift(@resources);
Line 1695 END	Line 1766 END
}	}

# If this is an empty sequence and we're filtering them, continue on	# If this is an empty sequence and we're filtering them, continue on
if ($curRes->is_map() && $args->{'suppressEmptySequences'} &&	$args->{'mapHidden'} = 0;
!$curRes->{DATA}->{HAS_VISIBLE_CHILDREN}) {	if (($curRes->is_map()) && (!$curRes->{DATA}->{HAS_VISIBLE_CHILDREN})) {
next;	if ($args->{'suppressEmptySequences'}) {
	next;
	} else {
	my $mapname = &Apache::lonnet::declutter($curRes->src());
	$mapname = &Apache::lonnet::deversion($mapname);
	if (lc($navmap->get_mapparam(undef,$mapname,"0.hiddenresource")) eq 'yes') {
	if ($userCanSeeHidden) {
	$args->{'mapHidden'} = 1;
	} else {
	next;
	}
	}
	}
}	}

# If we're suppressing navmaps and this is a navmap, continue on	# If we're suppressing navmaps and this is a navmap, continue on
Line 1781 END	Line 1864 END
$stack=$it->getStack();	$stack=$it->getStack();
}	}
($src,$symb,$anchor)=getLinkForResource($stack);	($src,$symb,$anchor)=getLinkForResource($stack);
if (defined($anchor)) { $anchor='#'.$anchor; }
my $srcHasQuestion = $src =~ /\?/;	my $srcHasQuestion = $src =~ /\?/;
$args->{"resourceLink"} = $src.	if (defined($anchor)) { $anchor='#'.$anchor; }
($srcHasQuestion?'&':'?') .	if (($args->{'caller'} eq 'sequence') && ($curRes->is_map())) {
'symb=' . &escape($symb).$anchor;	$args->{"resourceLink"} = $src.($srcHasQuestion?'&':'?') .'navmap=1';
	} else {
	$args->{"resourceLink"} = $src.
	($srcHasQuestion?'&':'?') .
	'symb=' . &escape($symb).$inhibitmenu.$anchor;
	}
}	}
# Now, we've decided what parts to show. Loop through them and	# Now, we've decided what parts to show. Loop through them and
# show them.	# show them.
Line 2015 sub new {	Line 2102 sub new {
my $proto = shift;	my $proto = shift;
my $class = ref($proto) \|\| $proto;	my $class = ref($proto) \|\| $proto;
my $self = {};	my $self = {};
bless($self); # So we can call change_user if neceesary	bless($self); # So we can call change_user if necessary

$self->{USERNAME} = shift \|\| $env{'user.name'};	$self->{USERNAME} = shift \|\| $env{'user.name'};
$self->{DOMAIN} = shift \|\| $env{'user.domain'};	$self->{DOMAIN} = shift \|\| $env{'user.domain'};
$self->{CODE} = shift;	$self->{CODE} = shift;
	$self->{NOHIDE} = shift;



Line 2033 sub new {	Line 2121 sub new {

# We can only tie the nav hash as done below if the username/domain	# We can only tie the nav hash as done below if the username/domain
# match the env one. Otherwise change_user does everything we need...since we can't	# match the env one. Otherwise change_user does everything we need...since we can't
# assume there are course hashes for the specific requested user@domamin:	# assume there are course hashes for the specific requested user:domain
	# Note: change_user is also called if we need the nav hash when printing CODEd
	# assignments or printing an exam, in which the enclosing folder for the items in
	# the exam has hidden set.
#	#

if (($self->{USERNAME} eq $env{'user.name'}) && ($self->{DOMAIN} eq $env{'user.domain'}) && !$self->{CODE}) {	if (($self->{USERNAME} eq $env{'user.name'}) && ($self->{DOMAIN} eq $env{'user.domain'}) &&
	!$self->{CODE} && !$self->{NOHIDE}) {

# tie the nav hash	# tie the nav hash

Line 2059 sub new {	Line 2151 sub new {
$self->{PARM_HASH} = \%parmhash;	$self->{PARM_HASH} = \%parmhash;
$self->{PARM_CACHE} = {};	$self->{PARM_CACHE} = {};
} else {	} else {
$self->change_user($self->{USERNAME}, $self->{DOMAIN}, $self->{CODE});	$self->change_user($self->{USERNAME}, $self->{DOMAIN}, $self->{CODE}, $self->{NOHIDE});
}	}

return $self;	return $self;
Line 2080 sub change_user {	Line 2172 sub change_user {
$self->{USERNAME} = shift;	$self->{USERNAME} = shift;
$self->{DOMAIN} = shift;	$self->{DOMAIN} = shift;
$self->{CODE} = shift;	$self->{CODE} = shift;
	$self->{NOHIDE} = shift;

# If the hashes are already tied make sure to break that bond:	# If the hashes are already tied make sure to break that bond:

Line 2095 sub change_user {	Line 2188 sub change_user {
my ($cdom, $cnum) = split(/\_/, $env{'request.course.id'});	my ($cdom, $cnum) = split(/\_/, $env{'request.course.id'});

my %big_hash;	my %big_hash;
&Apache::lonmap::loadmap($cnum, $cdom, $self->{USERNAME}, $self->{DOMAIN}, $self->{CODE}, \%big_hash);	&Apache::lonmap::loadmap($cnum, $cdom, $self->{USERNAME}, $self->{DOMAIN}, $self->{CODE}, $self->{NOHIDE}, \%big_hash);
$self->{NAV_HASH} = \%big_hash;	$self->{NAV_HASH} = \%big_hash;


Line 2106 sub change_user {	Line 2199 sub change_user {
$self->{PARM_CACHE} = {};	$self->{PARM_CACHE} = {};

my %parm_hash = {};	my %parm_hash = {};
foreach my $key (keys %big_hash) {	foreach my $key (keys(%big_hash)) {
if ($key =~ /^param\./) {	if ($key =~ /^param\./) {
my $param_key = $key;	my $param_key = $key;
$param_key =~ s/^param\.//;	$param_key =~ s/^param\.//;
Line 2116 sub change_user {	Line 2209 sub change_user {

$self->{PARM_HASH} = \%parm_hash;	$self->{PARM_HASH} = \%parm_hash;

	}

}

sub generate_course_user_opt {	sub generate_course_user_opt {
my $self = shift;	my $self = shift;
Line 2181 sub generate_email_discuss_status {	Line 2272 sub generate_email_discuss_status {
my %lastread = &Apache::lonnet::dump('nohist_'.$cid.'_discuss',	my %lastread = &Apache::lonnet::dump('nohist_'.$cid.'_discuss',
$self->{DOMAIN},$self->{USERNAME},'lastread');	$self->{DOMAIN},$self->{USERNAME},'lastread');
my %lastreadtime = ();	my %lastreadtime = ();
foreach my $key (keys %lastread) {	foreach my $key (keys(%lastread)) {
my $shortkey = $key;	my $shortkey = $key;
$shortkey =~ s/_lastread$//;	$shortkey =~ s/_lastread$//;
$lastreadtime{$shortkey} = $lastread{$key};	$lastreadtime{$shortkey} = $lastread{$key};
Line 2195 sub generate_email_discuss_status {	Line 2286 sub generate_email_discuss_status {
foreach my $msgid (@keys) {	foreach my $msgid (@keys) {
if ((!$emailstatus{$msgid}) \|\| ($emailstatus{$msgid} eq 'new')) {	if ((!$emailstatus{$msgid}) \|\| ($emailstatus{$msgid} eq 'new')) {
my ($sendtime,$shortsubj,$fromname,$fromdomain,$status,$fromcid,	my ($sendtime,$shortsubj,$fromname,$fromdomain,$status,$fromcid,
$symb,$error) = &Apache::lonmsg::unpackmsgid($msgid);	$symb,$error) = &Apache::lonmsg::unpackmsgid(&LONCAPA::escape($msgid));
&Apache::lonenc::check_decrypt(\$symb);	&Apache::lonenc::check_decrypt(\$symb);
if (($fromcid ne '') && ($fromcid ne $cid)) {	if (($fromcid ne '') && ($fromcid ne $cid)) {
next;	next;
Line 2692 sub parmval_real {	Line 2783 sub parmval_real {
if (defined($pack_def)) { return [$pack_def,'resource']; }	if (defined($pack_def)) { return [$pack_def,'resource']; }
return [''];	return [''];
}	}

	sub recurseup_maps {
	my ($self,$mapname) = @_;
	my @recurseup;
	if ($mapname) {
	my $res = $self->getResourceByUrl($mapname);
	if (ref($res)) {
	my @pcs = split(/,/,$res->map_hierarchy());
	shift(@pcs);
	if (@pcs) {
	@recurseup = map { &Apache::lonnet::declutter($self->getByMapPc($_)->src()); } reverse(@pcs);
	}
	}
	}
	return @recurseup;
	}

	sub recursed_crumbs {
	my ($self,$mapurl,$restitle) = @_;
	my (@revmapinfo,@revmapres);
	my $mapres = $self->getResourceByUrl($mapurl);
	if (ref($mapres)) {
	@revmapres = map { $self->getByMapPc($_); } split(/,/,$mapres->map_breadcrumbs());
	shift(@revmapres);
	}
	my $allowedlength = 60;
	my $minlength = 5;
	my $allowedtitle = 30;
	if (($env{'environment.icons'} eq 'iconsonly') && (!$env{'browser.mobile'})) {
	$allowedlength = 100;
	$allowedtitle = 70;
	}
	if (length($restitle) > $allowedtitle) {
	$restitle = &truncate_crumb_text($restitle,$allowedtitle);
	}
	my $totallength = length($restitle);
	my @links;

	foreach my $map (@revmapres) {
	my $pc = $map->map_pc();
	next if ((!$pc) \|\| ($pc == 1));
	push(@links,$map);
	push(@revmapinfo,{'href' => $map->link().'?navmap=1','text' => $map->title(),'no_mt' => 1,});
	$totallength += length($map->title());
	}
	my $numlinks = scalar(@links);
	if ($numlinks) {
	if ($totallength - $allowedlength > 0) {
	my $available = $allowedlength - length($restitle);
	my $avg = POSIX::ceil($available/$numlinks);
	if ($avg < $minlength) {
	$avg = $minlength;
	}
	@revmapinfo = ();
	foreach my $map (@links) {
	my $showntitle = &truncate_crumb_text($map->title(),$avg);
	if ($showntitle ne '') {
	push(@revmapinfo,{'href' => $map->link().'?navmap=1','text' => $showntitle,'no_mt' => 1,});
	}
	}
	}
	}
	if ($restitle ne '') {
	push(@revmapinfo,{'text' => $restitle, 'no_mt' => 1});
	}
	return @revmapinfo;
	}

	sub truncate_crumb_text {
	my ($title,$limit) = @_;
	my $showntitle = '';
	if (length($title) > $limit) {
	my @words = split(/\b\s*/,$title);
	if (@words == 1) {
	$showntitle = substr($title,0,$limit).' ...';
	} else {
	my $linklength = 0;
	my $num = 0;
	foreach my $word (@words) {
	$linklength += 1+length($word);
	if ($word eq '-') {
	$showntitle =~ s/ $//;
	$showntitle .= $word;
	} elsif ($linklength > $limit) {
	if ($num < @words) {
	$showntitle .= $word.' ...';
	last;
	} else {
	$showntitle .= $word;
	}
	} else {
	$showntitle .= $word.' ';
	}
	}
	$showntitle =~ s/ $//;
	}
	return $showntitle;
	} else {
	return $title;
	}
	}

#	#
# Determines the open/close dates for printing a map that	# Determines the open/close dates for printing a map that
# encloses a resource.	# encloses a resource.
Line 2703 sub map_printdates {	Line 2896 sub map_printdates {



my $opendate = $self->get_mapparam($res->symb(), "$part.printstartdate");	my $opendate = $self->get_mapparam($res->symb(),'',"$part.printstartdate");
my $closedate= $self->get_mapparam($res->symb(), "$part.printenddate");	my $closedate= $self->get_mapparam($res->symb(),'', "$part.printenddate");


return ($opendate, $closedate);	return ($opendate, $closedate);
}	}

sub get_mapparam {	sub get_mapparam {
my ($self, $symb, $what) = @_;	my ($self, $symb, $mapname, $what) = @_;

# Ensure the course option hash is populated:	# Ensure the course option hash is populated:

Line 2730 sub get_mapparam {	Line 2923 sub get_mapparam {
my $uname=$self->{USERNAME};	my $uname=$self->{USERNAME};
my $udom=$self->{DOMAIN};	my $udom=$self->{DOMAIN};

unless ($symb) { return ['']; }	unless ($symb \|\| $mapname) { return; }
my $result='';	my $result='';
	my ($recursed,@recurseup);

# Figure out which map we are in.	# Figure out which map we are in.

my ($mapname,$id,$fn)=&Apache::lonnet::decode_symb($symb);	if ($symb && !$mapname) {
$mapname = &Apache::lonnet::deversion($mapname);	my ($id,$fn);
	($mapname,$id,$fn)=&Apache::lonnet::decode_symb($symb);
	$mapname = &Apache::lonnet::deversion($mapname);
	}

my $rwhat=$what;	my $rwhat=$what;
$what=~s/^parameter\_//;	$what=~s/^parameter\_//;
Line 2770 sub get_mapparam {	Line 2965 sub get_mapparam {
if (defined($$useropt{$courselevel})) {	if (defined($$useropt{$courselevel})) {
return $$useropt{$courselevel};	return $$useropt{$courselevel};
}	}
	if ($what =~ /\.(encrypturl\|hiddenresource)$/) {
	unless ($recursed) {
	@recurseup = $self->recurseup_maps($mapname);
	$recursed = 1;
	}
	foreach my $item (@recurseup) {
	my $norecursechk=$usercourseprefix.'.'.$item.'___(all).'.$what;
	if (defined($$useropt{$norecursechk})) {
	if ($what =~ /\.(encrypturl\|hiddenresource)$/) {
	return $$useropt{$norecursechk};
	}
	}
	}
	}
}	}

# Check course -- group	# Check course -- group
Line 2780 sub get_mapparam {	Line 2989 sub get_mapparam {
if (defined($$courseopt{$grplevel})) {	if (defined($$courseopt{$grplevel})) {
return $$courseopt{$grplevel};	return $$courseopt{$grplevel};
}	}
	if ($what =~ /\.(encrypturl\|hiddenresource)$/) {
	unless ($recursed) {
	@recurseup = $self->recurseup_maps($mapname);
	$recursed = 1;
	}
	foreach my $item (@recurseup) {
	my $norecursechk=$usercourseprefix.'.['.$cgroup.'].'.$item.'___(all).'.$what;
	if (defined($$courseopt{$norecursechk})) {
	if ($what =~ /\.(encrypturl\|hiddenresource)$/) {
	return $$courseopt{$norecursechk};
	}
	}
	}
	}
}	}

# Check course -- section	# Check course -- section
Line 2792 sub get_mapparam {	Line 3015 sub get_mapparam {
if (defined($$courseopt{$seclevel})) {	if (defined($$courseopt{$seclevel})) {
return $$courseopt{$seclevel};	return $$courseopt{$seclevel};
}	}
	if ($what =~ /\.(encrypturl\|hiddenresource)$/) {
	unless ($recursed) {
	@recurseup = $self->recurseup_maps($mapname);
	$recursed = 1;
	}
	foreach my $item (@recurseup) {
	my $norecursechk=$usercourseprefix.'.['.$csec.'].'.$item.'___(all).'.$what;
	if (defined($$courseopt{$norecursechk})) {
	if ($what =~ /\.(encrypturl\|hiddenresource)$/) {
	return $$courseopt{$norecursechk};
	}
	}
	}
	}
}	}
# Check the map parameters themselves:	# Check the map parameters themselves:

my $thisparm = $$parmhash{$symbparm};	if ($symb) {
if (defined($thisparm)) {	my $symbparm=$symb.'.'.$what;
return $thisparm;	my $thisparm = $$parmhash{$symbparm};
	if (defined($thisparm)) {
	return $thisparm;
	}
}	}


Line 2807 sub get_mapparam {	Line 3047 sub get_mapparam {
if (defined($$courseopt{$courselevel})) {	if (defined($$courseopt{$courselevel})) {
return $$courseopt{$courselevel};	return $$courseopt{$courselevel};
}	}
	if ($what =~ /\.(encrypturl\|hiddenresource)$/) {
	unless ($recursed) {
	@recurseup = $self->recurseup_maps($mapname);
	$recursed = 1;
	}
	foreach my $item (@recurseup) {
	my $norecursechk=$usercourseprefix.'.'.$item.'___(all).'.$what;
	if (defined($$courseopt{$norecursechk})) {
	if ($what =~ /\.(encrypturl\|hiddenresource)$/) {
	return $$courseopt{$norecursechk};
	}
	}
	}
	}
}	}
return undef; # Unefined if we got here.	return undef; # Unefined if we got here.
}	}
Line 2862 sub getcourseparam {	Line 3116 sub getcourseparam {
#	#
# We want the course level stuff from the way	# We want the course level stuff from the way
# parmval_real operates	# parmval_real operates
# TODO: Fator some of this stuff out of	# TODO: Factor some of this stuff out of
# both parmval_real and here	# both parmval_real and here
#	#
my $courselevel = $cid . '.' . $what;	my $courselevel = $cid . '.' . $what;
Line 2879 sub getcourseparam {	Line 3133 sub getcourseparam {
}	}
# Try for the group's course level option:	# Try for the group's course level option:

if ($uname ne '' and defined($courseopt)) {	if ($cgroup ne '' and defined($courseopt)) {
if (defined($$courseopt{$grplevel})) {	if (defined($$courseopt{$grplevel})) {
return $$courseopt{$grplevel};	return $$courseopt{$grplevel};
}	}
Line 2887 sub getcourseparam {	Line 3141 sub getcourseparam {

# Try for section level parameters:	# Try for section level parameters:

if ($csec and defined($courseopt)) {	if ($csec ne '' and defined($courseopt)) {
if (defined($$courseopt{$seclevel})) {	if (defined($$courseopt{$seclevel})) {
return $$courseopt{$seclevel};	return $$courseopt{$seclevel};
}	}
}	}
# Try for 'additional' course parameterse:	# Try for 'additional' course parameters:

if (defined($courseopt)) {	if (defined($courseopt)) {
if (defined($$courseopt{$courselevel})) {	if (defined($$courseopt{$courselevel})) {
Line 2918 resource appears multiple times in the c	Line 3172 resource appears multiple times in the c
will be returned (useful for maps), unless the multiple parameter has	will be returned (useful for maps), unless the multiple parameter has
been included, in which case all instances are returned in an array.	been included, in which case all instances are returned in an array.

=item * B<retrieveResources>(map, filterFunc, recursive, bailout, showall):	=item * B<retrieveResources>(map, filterFunc, recursive, bailout, showall, noblockcheck):

The map is a specification of a map to retreive the resources from,	The map is a specification of a map to retreive the resources from,
either as a url or as an object. The filterFunc is a reference to a	either as a url or as an object. The filterFunc is a reference to a
Line 2927 true if the resource should be included,	Line 3181 true if the resource should be included,
be. If recursive is true, the map will be recursively examined,	be. If recursive is true, the map will be recursively examined,
otherwise it will not be. If bailout is true, the function will return	otherwise it will not be. If bailout is true, the function will return
as soon as it finds a resource, if false it will finish. If showall is	as soon as it finds a resource, if false it will finish. If showall is
true it will not hide maps that contain nothing but one other map. By	true it will not hide maps that contain nothing but one other map. The
default, the map is the top-level map of the course, filterFunc is a	noblockcheck arg is propagated to become the sixth arg in the call to
function that always returns 1, recursive is true, bailout is false,	lonnet::allowed when checking a resource's availability during collection
showall is false. The resources will be returned in a list containing	of resources using the iterator. noblockcheck needs to be true if
the resource objects for the corresponding resources, with B<no	retrieveResources() was called by a routine that itself was called by
structure information> in the list; regardless of branching,	lonnet::allowed, in order to avoid recursion. By default the map
recursion, etc., it will be a flat list.	is the top-level map of the course, filterFunc is a function that
	always returns 1, recursive is true, bailout is false, showall is
	false. The resources will be returned in a list containing the
	resource objects for the corresponding resources, with B<no structure
	information> in the list; regardless of branching, recursion, etc.,
	it will be a flat list.

Thus, this is suitable for cases where you don't want the structure,	Thus, this is suitable for cases where you don't want the structure,
just a list of all resources. It is also suitable for finding out how	just a list of all resources. It is also suitable for finding out how
Line 3000 sub retrieveResources {	Line 3259 sub retrieveResources {
my $bailout = shift;	my $bailout = shift;
if (!defined($bailout)) { $bailout = 0; }	if (!defined($bailout)) { $bailout = 0; }
my $showall = shift;	my $showall = shift;
	my $noblockcheck = shift;
# Create the necessary iterator.	# Create the necessary iterator.
if (!ref($map)) { # assume it's a url of a map.	if (!ref($map)) { # assume it's a url of a map.
$map = $self->getResourceByUrl($map);	$map = $self->getResourceByUrl($map);
Line 3029 sub retrieveResources {	Line 3289 sub retrieveResources {
# Run down the iterator and collect the resources.	# Run down the iterator and collect the resources.
my $curRes;	my $curRes;

while ($curRes = $it->next()) {	while ($curRes = $it->next(undef,$noblockcheck)) {
if (ref($curRes)) {	if (ref($curRes)) {
if (!&$filterFunc($curRes)) {	if (!&$filterFunc($curRes)) {
next;	next;
Line 3180 Note that inside of the loop, it's frequ	Line 3440 Note that inside of the loop, it's frequ
resource objects will be references, and any non-references will	resource objects will be references, and any non-references will
be the tokens described above.	be the tokens described above.

Also note there is some old code floating around that trys to track	The next() routine can take two (optional) arguments:
	closeAllPages - if true will not recurse down a .page
	noblockcheck - passed to browsePriv() for passing as sixth arg to
	call to lonnet::allowed. This needs to be set if retrieveResources
	was already called from another routine called within lonnet::allowed,
	so as to prevent recursion.

	Also note there is some old code floating around that tries to track
the depth of the iterator to see when it's done; do not copy that	the depth of the iterator to see when it's done; do not copy that
code. It is difficult to get right and harder to understand than	code. It is difficult to get right and harder to understand than
this. They should be migrated to this new style.	this. They should be migrated to this new style.
Line 3327 sub new {	Line 3594 sub new {
if ($resourceCount == 1 && $resource->is_sequence() && !$self->{FORCE_TOP}) {	if ($resourceCount == 1 && $resource->is_sequence() && !$self->{FORCE_TOP}) {
my $firstResource = $resource->map_start();	my $firstResource = $resource->map_start();
my $finishResource = $resource->map_finish();	my $finishResource = $resource->map_finish();
my $result;	return Apache::lonnavmaps::iterator->new($self->{NAV_MAP}, $firstResource,
$result = Apache::lonnavmaps::iterator->new($self->{NAV_MAP}, $firstResource,	$finishResource, $self->{FILTER},
$finishResource, $self->{FILTER},	$self->{ALREADY_SEEN},
$self->{ALREADY_SEEN},	$self->{CONDITION},
$self->{CONDITION},	$self->{FORCE_TOP});
$self->{FORCE_TOP});
return $result;


}	}

# Set up some bookkeeping information.	# Set up some bookkeeping information.
Line 3360 sub new {	Line 3623 sub new {
sub next {	sub next {
my $self = shift;	my $self = shift;
my $closeAllPages=shift;	my $closeAllPages=shift;
	my $noblockcheck = shift;
if ($self->{FINISHED}) {	if ($self->{FINISHED}) {
return END_ITERATOR();	return END_ITERATOR();
}	}
Line 3509 sub next {	Line 3773 sub next {
# If this is a blank resource, don't actually return it.	# If this is a blank resource, don't actually return it.
# Should you ever find you need it, make sure to add an option to the code	# Should you ever find you need it, make sure to add an option to the code
# that you can use; other things depend on this behavior.	# that you can use; other things depend on this behavior.
my $browsePriv = $self->{HERE}->browsePriv();	my $browsePriv = $self->{HERE}->browsePriv($noblockcheck);
if (!$self->{HERE}->src() \|\|	if (!$self->{HERE}->src() \|\|
(!($browsePriv eq 'F') && !($browsePriv eq '2')) ) {	(!($browsePriv eq 'F') && !($browsePriv eq '2')) ) {
return $self->next($closeAllPages);	return $self->next($closeAllPages);
Line 3841 sub new {	Line 4105 sub new {
# about this resource in. Not used by the resource object	# about this resource in. Not used by the resource object
# directly.	# directly.
$self->{DATA} = {};	$self->{DATA} = {};

bless($self);	bless($self);

	# This is a speed optimization, to avoid calling symb() too often.
	$self->{SYMB} = $self->symb();

return $self;	return $self;
}	}

Line 3955 sub src {	Line 4222 sub src {
}	}
sub shown_symb {	sub shown_symb {
my $self=shift;	my $self=shift;
if ($self->encrypted()) {return &Apache::lonenc::encrypted($self->symb());}	if ($self->encrypted()) {return &Apache::lonenc::encrypted($self->{SYMB});}
return $self->symb();	return $self->{SYMB};
}	}
sub id {	sub id {
my $self=shift;	my $self=shift;
Line 3969 sub enclosing_map_src {	Line 4236 sub enclosing_map_src {
}	}
sub symb {	sub symb {
my $self=shift;	my $self=shift;
	if (defined($self->{SYMB})) { return $self->{SYMB}; }
(my $first, my $second) = $self->{ID} =~ /(\d+).(\d+)/;	(my $first, my $second) = $self->{ID} =~ /(\d+).(\d+)/;
my $symbSrc = &Apache::lonnet::declutter($self->src());	my $symbSrc = &Apache::lonnet::declutter($self->src());
my $symb = &Apache::lonnet::declutter($self->navHash('map_id_'.$first))	my $symb = &Apache::lonnet::declutter($self->navHash('map_id_'.$first))
Line 3977 sub symb {	Line 4245 sub symb {
}	}
sub wrap_symb {	sub wrap_symb {
my $self = shift;	my $self = shift;
return $self->{NAV_MAP}->wrap_symb($self->symb());	return $self->{NAV_MAP}->wrap_symb($self->{SYMB});
}	}
sub title {	sub title {
my $self=shift;	my $self=shift;
Line 4200 sub parmval {	Line 4468 sub parmval {
if (!defined($part)) {	if (!defined($part)) {
$part = '0';	$part = '0';
}	}
return $self->{NAV_MAP}->parmval($part.'.'.$what, $self->symb());	return $self->{NAV_MAP}->parmval($part.'.'.$what, $self->{SYMB});
}	}

=pod	=pod
Line 4233 resource of the map.	Line 4501 resource of the map.

Returns a string with the type of the map in it.	Returns a string with the type of the map in it.

=item *B<map_hierarchy>:	=item * B<map_hierarchy>:

Returns a string with a comma-separated ordered list of map_pc IDs	Returns a string with a comma-separated ordered list of map_pc IDs
for the hierarchy of maps containing a map, with the top level	for the hierarchy of maps containing a map, with the top level
map first, then descending to deeper levels, with the enclosing map last.	map first, then descending to deeper levels, with the enclosing map last.

	=item * B<map_breadcrumbs>:

	Same as map_hierarchy, except maps containing only a single itemm if
	it's a map, or containing no items are omitted, unless it's the top
	level map (map_pc = 1), which is always included.

=back	=back

=cut	=cut
Line 4274 sub map_hierarchy {	Line 4548 sub map_hierarchy {
my $pc = $self->map_pc();	my $pc = $self->map_pc();
return $self->navHash("map_hierarchy_$pc", 0);	return $self->navHash("map_hierarchy_$pc", 0);
}	}
	sub map_breadcrumbs {
	my $self = shift;
	my $pc = $self->map_pc();
	return $self->navHash("map_breadcrumbs_$pc", 0);
	}

#####	#####
# Property queries	# Property queries
Line 4376 sub printable {	Line 4655 sub printable {

my ($self, $part) = @_;	my ($self, $part) = @_;

&Apache::lonnet::logthis($self->symb());


# The following cases apply:	# The following cases apply:
# - If a start date is not set, it is replaced by the open date.	# - If a start date is not set, it is replaced by the open date.
# - Ditto for start/open replaced by content open.	# - Ditto for start/open replaced by content open.
Line 4456 sub awarded {	Line 4732 sub awarded {
my $self = shift; my $part = shift;	my $self = shift; my $part = shift;
$self->{NAV_MAP}->get_user_data();	$self->{NAV_MAP}->get_user_data();
if (!defined($part)) { $part = '0'; }	if (!defined($part)) { $part = '0'; }
return $self->{NAV_MAP}->{STUDENT_DATA}->{$self->symb()}->{'resource.'.$part.'.awarded'};	return $self->{NAV_MAP}->{STUDENT_DATA}->{$self->{SYMB}}->{'resource.'.$part.'.awarded'};
}	}
sub taskversion {	sub taskversion {
my $self = shift; my $part = shift;	my $self = shift; my $part = shift;
$self->{NAV_MAP}->get_user_data();	$self->{NAV_MAP}->get_user_data();
if (!defined($part)) { $part = '0'; }	if (!defined($part)) { $part = '0'; }
return $self->{NAV_MAP}->{STUDENT_DATA}->{$self->symb()}->{'resource.'.$part.'.version'};	return $self->{NAV_MAP}->{STUDENT_DATA}->{$self->{SYMB}}->{'resource.'.$part.'.version'};
}	}
sub taskstatus {	sub taskstatus {
my $self = shift; my $part = shift;	my $self = shift; my $part = shift;
$self->{NAV_MAP}->get_user_data();	$self->{NAV_MAP}->get_user_data();
if (!defined($part)) { $part = '0'; }	if (!defined($part)) { $part = '0'; }
return $self->{NAV_MAP}->{STUDENT_DATA}->{$self->symb()}->{'resource.'.$self->taskversion($part).'.'.$part.'.status'};	return $self->{NAV_MAP}->{STUDENT_DATA}->{$self->{SYMB}}->{'resource.'.$self->taskversion($part).'.'.$part.'.status'};
}	}
sub solved {	sub solved {
my $self = shift; my $part = shift;	my $self = shift; my $part = shift;
$self->{NAV_MAP}->get_user_data();	$self->{NAV_MAP}->get_user_data();
if (!defined($part)) { $part = '0'; }	if (!defined($part)) { $part = '0'; }
return $self->{NAV_MAP}->{STUDENT_DATA}->{$self->symb()}->{'resource.'.$part.'.solved'};	return $self->{NAV_MAP}->{STUDENT_DATA}->{$self->{SYMB}}->{'resource.'.$part.'.solved'};
}	}
sub checkedin {	sub checkedin {
my $self = shift; my $part = shift;	my $self = shift; my $part = shift;
Line 4482 sub checkedin {	Line 4758 sub checkedin {
if (!defined($part)) { $part = '0'; }	if (!defined($part)) { $part = '0'; }
if ($self->is_task()) {	if ($self->is_task()) {
my $version = $self->taskversion($part);	my $version = $self->taskversion($part);
return ($self->{NAV_MAP}->{STUDENT_DATA}->{$self->symb()}->{'resource.'.$version .'.'.$part.'.checkedin'},$self->{NAV_MAP}->{STUDENT_DATA}->{$self->symb()}->{'resource.'.$version .'.'.$part.'.checkedin.slot'});	return ($self->{NAV_MAP}->{STUDENT_DATA}->{$self->{SYMB}}->{'resource.'.$version .'.'.$part.'.checkedin'},$self->{NAV_MAP}->{STUDENT_DATA}->{$self->{SYMB}}->{'resource.'.$version .'.'.$part.'.checkedin.slot'});
} else {	} else {
return ($self->{NAV_MAP}->{STUDENT_DATA}->{$self->symb()}->{'resource.'.$part.'.checkedin'},$self->{NAV_MAP}->{STUDENT_DATA}->{$self->symb()}->{'resource.'.$part.'.checkedin.slot'});	return ($self->{NAV_MAP}->{STUDENT_DATA}->{$self->{SYMB}}->{'resource.'.$part.'.checkedin'},$self->{NAV_MAP}->{STUDENT_DATA}->{$self->{SYMB}}->{'resource.'.$part.'.checkedin.slot'});
}	}
}	}
# this should work exactly like the copy in lonhomework.pm	# this should work exactly like the copy in lonhomework.pm
Line 4503 sub duedate {	Line 4779 sub duedate {
my $due_date=$self->parmval("duedate", $part);	my $due_date=$self->parmval("duedate", $part);
if ($interval[0] =~ /\d+/) {	if ($interval[0] =~ /\d+/) {
my $first_access=&Apache::lonnet::get_first_access($interval[1],	my $first_access=&Apache::lonnet::get_first_access($interval[1],
$self->symb);	$self->{SYMB});
if (defined($first_access)) {	if (defined($first_access)) {
my $interval = $first_access+$interval[0];	my $interval = $first_access+$interval[0];
$date = (!$due_date \|\| $interval < $due_date) ? $interval	$date = (!$due_date \|\| $interval < $due_date) ? $interval
Line 4576 sub weight {	Line 4852 sub weight {
my $self = shift; my $part = shift;	my $self = shift; my $part = shift;
if (!defined($part)) { $part = '0'; }	if (!defined($part)) { $part = '0'; }
my $weight = &Apache::lonnet::EXT('resource.'.$part.'.weight',	my $weight = &Apache::lonnet::EXT('resource.'.$part.'.weight',
$self->symb(), $self->{DOMAIN},	$self->{SYMB}, $self->{DOMAIN},
$self->{USERNAME},	$self->{USERNAME},
$env{'request.course.sec'});	$env{'request.course.sec'});
return $weight;	return $weight;
Line 4585 sub part_display {	Line 4861 sub part_display {
my $self= shift(); my $partID = shift();	my $self= shift(); my $partID = shift();
if (! defined($partID)) { $partID = '0'; }	if (! defined($partID)) { $partID = '0'; }
my $display=&Apache::lonnet::EXT('resource.'.$partID.'.display',	my $display=&Apache::lonnet::EXT('resource.'.$partID.'.display',
$self->symb);	$self->{SYMB});
if (! defined($display) \|\| $display eq '') {	if (! defined($display) \|\| $display eq '') {
$display = $partID;	$display = $partID;
}	}
Line 4605 sub getReturnHash {	Line 4881 sub getReturnHash {
my $self = shift;	my $self = shift;

if (!defined($self->{RETURN_HASH})) {	if (!defined($self->{RETURN_HASH})) {
my %tmpHash = &Apache::lonnet::restore($self->symb(),undef,$self->{DOMAIN},$self->{USERNAME});	my %tmpHash = &Apache::lonnet::restore($self->{SYMB},undef,$self->{DOMAIN},$self->{USERNAME});
$self->{RETURN_HASH} = \%tmpHash;	$self->{RETURN_HASH} = \%tmpHash;
}	}
}	}
Line 4670 and use the link as appropriate.	Line 4946 and use the link as appropriate.

sub hasDiscussion {	sub hasDiscussion {
my $self = shift;	my $self = shift;
return $self->{NAV_MAP}->hasDiscussion($self->symb());	return $self->{NAV_MAP}->hasDiscussion($self->{SYMB});
}	}

sub last_post_time {	sub last_post_time {
my $self = shift;	my $self = shift;
return $self->{NAV_MAP}->last_post_time($self->symb());	return $self->{NAV_MAP}->last_post_time($self->{SYMB});
}	}

sub discussion_info {	sub discussion_info {
my ($self,$filter) = @_;	my ($self,$filter) = @_;
return $self->{NAV_MAP}->discussion_info($self->symb(),$filter);	return $self->{NAV_MAP}->discussion_info($self->{SYMB},$filter);
}	}

sub getFeedback {	sub getFeedback {
my $self = shift;	my $self = shift;
my $source = $self->src();	my $source = $self->src();
my $symb = $self->symb();	my $symb = $self->{SYMB};
if ($source =~ /^\/res\//) { $source = substr $source, 5; }	if ($source =~ /^\/res\//) { $source = substr $source, 5; }
return $self->{NAV_MAP}->getFeedback($symb,$source);	return $self->{NAV_MAP}->getFeedback($symb,$source);
}	}
Line 4694 sub getFeedback {	Line 4970 sub getFeedback {
sub getErrors {	sub getErrors {
my $self = shift;	my $self = shift;
my $source = $self->src();	my $source = $self->src();
my $symb = $self->symb();	my $symb = $self->{SYMB};
if ($source =~ /^\/res\//) { $source = substr $source, 5; }	if ($source =~ /^\/res\//) { $source = substr $source, 5; }
return $self->{NAV_MAP}->getErrors($symb,$source);	return $self->{NAV_MAP}->getErrors($symb,$source);
}	}
Line 4844 sub extractParts {	Line 5120 sub extractParts {
if ($partorder) {	if ($partorder) {
my @parts;	my @parts;
for my $part (split (/,/,$partorder)) {	for my $part (split (/,/,$partorder)) {
if (!Apache::loncommon::check_if_partid_hidden($part, $self->symb())) {	if (!Apache::loncommon::check_if_partid_hidden($part, $self->{SYMB})) {
push @parts, $part;	push @parts, $part;
$parts{$part} = 1;	$parts{$part} = 1;
}	}
Line 4862 sub extractParts {	Line 5138 sub extractParts {
my $part = $1;	my $part = $1;
# This floods the logs if it blows up	# This floods the logs if it blows up
if (defined($parts{$part})) {	if (defined($parts{$part})) {
&Apache::lonnet::logthis("$part multiply defined in metadata for " . $self->symb());	&Apache::lonnet::logthis("$part multiply defined in metadata for " . $self->{SYMB});
}	}

# check to see if part is turned off.	# check to see if part is turned off.

if (!Apache::loncommon::check_if_partid_hidden($part, $self->symb())) {	if (!Apache::loncommon::check_if_partid_hidden($part, $self->{SYMB})) {
$parts{$part} = 1;	$parts{$part} = 1;
}	}
}	}
}	}
my @sortedParts = sort keys %parts;	my @sortedParts = sort(keys(%parts));
$self->{PARTS} = \@sortedParts;	$self->{PARTS} = \@sortedParts;
}	}

Line 4893 sub extractParts {	Line 5169 sub extractParts {
# So we have to use our knowlege of part names to figure out	# So we have to use our knowlege of part names to figure out
# where the part names begin and end, and even then, it is possible	# where the part names begin and end, and even then, it is possible
# to construct ambiguous situations.	# to construct ambiguous situations.
foreach my $data (split /,/, $metadata) {	foreach my $data (split(/,/, $metadata)) {
if ($data =~ /^([a-zA-Z]+)response_(.*)/	if ($data =~ /^([a-zA-Z]+)response_(.*)/
\|\| $data =~ /^(Task)_(.*)/) {	\|\| $data =~ /^(Task)_(.*)/) {
my $responseType = $1;	my $responseType = $1;
my $partStuff = $2;	my $partStuff = $2;
my $partIdSoFar = '';	my $partIdSoFar = '';
my @partChunks = split /_/, $partStuff;	my @partChunks = split(/_/, $partStuff);
my $i = 0;	my $i = 0;
for ($i = 0; $i < scalar(@partChunks); $i++) {	for ($i = 0; $i < scalar(@partChunks); $i++) {
if ($partIdSoFar) { $partIdSoFar .= '_'; }	if ($partIdSoFar) { $partIdSoFar .= '_'; }
Line 5372 sub status {	Line 5648 sub status {
sub check_for_slot {	sub check_for_slot {
my $self = shift;	my $self = shift;
my $part = shift;	my $part = shift;
my $symb = $self->symb();	my $symb = $self->{SYMB};
my ($use_slots,$available,$availablestudent) = $self->slot_control($part);	my ($use_slots,$available,$availablestudent) = $self->slot_control($part);
if (($use_slots ne '') && ($use_slots !~ /^\sno\s$/i)) {	if (($use_slots ne '') && ($use_slots !~ /^\sno\s$/i)) {
my @slots = (split(/:/,$availablestudent),split(/:/,$available));	my @slots = (split(/:/,$availablestudent),split(/:/,$available));
Line 5381 sub check_for_slot {	Line 5657 sub check_for_slot {
my $cnum=$env{'course.'.$cid.'.num'};	my $cnum=$env{'course.'.$cid.'.num'};
my $now = time;	my $now = time;
my $num_usable_slots = 0;	my $num_usable_slots = 0;
	my ($checkedin,$checkedinslot,%consumed_uniq,%slots);
if (@slots > 0) {	if (@slots > 0) {
my %slots=&Apache::lonnet::get('slots',[@slots],$cdom,$cnum);	%slots=&Apache::lonnet::get('slots',[@slots],$cdom,$cnum);
if (&Apache::lonnet::error(%slots)) {	if (&Apache::lonnet::error(%slots)) {
return (UNKNOWN);	return (UNKNOWN);
}	}
my @sorted_slots = &Apache::loncommon::sorted_slots(\@slots,\%slots,'starttime');	my @sorted_slots = &Apache::loncommon::sorted_slots(\@slots,\%slots,'starttime');
my ($checkedin,$checkedinslot);
foreach my $slot_name (@sorted_slots) {	foreach my $slot_name (@sorted_slots) {
next if (!defined($slots{$slot_name}) \|\| !ref($slots{$slot_name}));	next if (!defined($slots{$slot_name}) \|\| !ref($slots{$slot_name}));
my $end = $slots{$slot_name}->{'endtime'};	my $end = $slots{$slot_name}->{'endtime'};
Line 5400 sub check_for_slot {	Line 5676 sub check_for_slot {
} else {	} else {
if ($ip ne '') {	if ($ip ne '') {
if (!&Apache::loncommon::check_ip_acc($ip)) {	if (!&Apache::loncommon::check_ip_acc($ip)) {
return (RESERVED_LOCATION,$ip,$slot_name);	return (RESERVED_LOCATION,$end,$slot_name);
}	}
}	}
my @proctors;	my @proctors;
Line 5411 sub check_for_slot {	Line 5687 sub check_for_slot {
($checkedin,$checkedinslot) = $self->checkedin();	($checkedin,$checkedinslot) = $self->checkedin();
unless ((grep(/^\Q$checkedin\E/,@proctors)) &&	unless ((grep(/^\Q$checkedin\E/,@proctors)) &&
($checkedinslot eq $slot_name)) {	($checkedinslot eq $slot_name)) {
return (NEEDS_CHECKIN,undef,$slot_name);	return (NEEDS_CHECKIN,$end,$slot_name);
}	}
}	}
return (RESERVED,$end,$slot_name);	return (RESERVED,$end,$slot_name);
Line 5421 sub check_for_slot {	Line 5697 sub check_for_slot {
$num_usable_slots ++;	$num_usable_slots ++;
}	}
}	}
my ($is_correct,$got_grade);	my ($is_correct,$wait_for_grade);
if ($self->is_task()) {	if ($self->is_task()) {
my $taskstatus = $self->taskstatus();	my $taskstatus = $self->taskstatus();
$is_correct = (($taskstatus eq 'pass') \|\|	$is_correct = (($taskstatus eq 'pass') \|\|
($self->solved() =~ /^correct_/));	($self->solved() =~ /^correct_/));
$got_grade = ($taskstatus =~ /^(?:pass\|fail)$/);	unless ($taskstatus =~ /^(?:pass\|fail)$/) {
	$wait_for_grade = 1;
	}
} else {	} else {
$got_grade = 1;	unless ($self->completable()) {
$is_correct = ($self->solved() =~ /^correct_/);	$wait_for_grade = 1;
	}
	unless (($self->problemstatus($part) eq 'no') \|\|
	($self->problemstatus($part) eq 'no_feedback_ever')) {
	$is_correct = ($self->solved($part) =~ /^correct_/);
	$wait_for_grade = 0;
	}
}	}
($checkedin,$checkedinslot) = $self->checkedin();	($checkedin,$checkedinslot) = $self->checkedin();
if ($checkedin) {	if ($checkedin) {
if (!$got_grade) {	if (ref($slots{$checkedinslot}) eq 'HASH') {
	$consumed_uniq{$checkedinslot} = $slots{$checkedinslot}{'uniqueperiod'};
	}
	if ($wait_for_grade) {
return (WAITING_FOR_GRADE);	return (WAITING_FOR_GRADE);
} elsif ($is_correct) {	} elsif ($is_correct) {
return (CORRECT);	return (CORRECT);
Line 5448 sub check_for_slot {	Line 5735 sub check_for_slot {
if (ref($reservable) eq 'HASH') {	if (ref($reservable) eq 'HASH') {
if ((ref($reservable->{'now_order'}) eq 'ARRAY') && (ref($reservable->{'now'}) eq 'HASH')) {	if ((ref($reservable->{'now_order'}) eq 'ARRAY') && (ref($reservable->{'now'}) eq 'HASH')) {
foreach my $slot (reverse (@{$reservable->{'now_order'}})) {	foreach my $slot (reverse (@{$reservable->{'now_order'}})) {
	my $canuse;
if (($reservable->{'now'}{$slot}{'symb'} eq '') \|\|	if (($reservable->{'now'}{$slot}{'symb'} eq '') \|\|
($reservable->{'now'}{$slot}{'symb'} eq $symb)) {	($reservable->{'now'}{$slot}{'symb'} eq $symb)) {
	$canuse = 1;
	}
	if ($canuse) {
	if ($checkedin) {
	if (ref($consumed_uniq{$checkedinslot}) eq 'ARRAY') {
	my ($uniqstart,$uniqend)=@{$consumed_uniq{$checkedinslot}};
	if ($reservable->{'now'}{$slot}{'uniqueperiod'} =~ /^(\d+),(\d+)$/) {
	my ($new_uniq_start,$new_uniq_end) = ($1,$2);
	next if (!
	($uniqstart < $new_uniq_start && $uniqend < $new_uniq_start) \|\|
	($uniqstart > $new_uniq_end && $uniqend > $new_uniq_end ));
	}
	}
	}
return(RESERVABLE,$reservable->{'now'}{$slot}{'endreserve'});	return(RESERVABLE,$reservable->{'now'}{$slot}{'endreserve'});
}	}
}	}
}	}
if ((ref($reservable->{'future_order'}) eq 'ARRAY') && (ref($reservable->{'future'}) eq 'HASH')) {	if ((ref($reservable->{'future_order'}) eq 'ARRAY') && (ref($reservable->{'future'}) eq 'HASH')) {
foreach my $slot (@{$reservable->{'future_order'}}) {	foreach my $slot (@{$reservable->{'future_order'}}) {
	my $canuse;
if (($reservable->{'future'}{$slot}{'symb'} eq '') \|\|	if (($reservable->{'future'}{$slot}{'symb'} eq '') \|\|
($reservable->{'future'}{$slot}{'symb'} eq $symb)) {	($reservable->{'future'}{$slot}{'symb'} eq $symb)) {
	$canuse = 1;
	}
	if ($canuse) {
	if ($checkedin) {
	if (ref($consumed_uniq{$checkedinslot}) eq 'ARRAY') {
	my ($uniqstart,$uniqend)=@{$consumed_uniq{$checkedinslot}};
	if ($reservable->{'future'}{$slot}{'uniqueperiod'} =~ /^(\d+),(\d+)$/) {
	my ($new_uniq_start,$new_uniq_end) = ($1,$2);
	next if (!
	($uniqstart < $new_uniq_start && $uniqend < $new_uniq_start) \|\|
	($uniqstart > $new_uniq_end && $uniqend > $new_uniq_end ));
	}
	}
	}
return(RESERVABLE_LATER,$reservable->{'future'}{$slot}{'startreserve'});	return(RESERVABLE_LATER,$reservable->{'future'}{$slot}{'startreserve'});
}	}
}	}
Line 5608 sub completable {	Line 5925 sub completable {

=pod	=pod

	B<Answerable>

	The answerable method differs from the completable method in its handling of problem parts
	for which feedback on correctness is suppressed, but the student still has tries left, and
	the problem part is not past due, (i.e., the student could submit a different answer if
	he/she so chose). For that case completable will return 0, whereas answerable will return 1.

	=cut

	sub answerable {
	my $self = shift;
	if (!$self->is_problem()) { return 0; }
	my $partCount = $self->countParts();
	foreach my $part (@{$self->parts()}) {
	if ($part eq '0' && $partCount != 1) { next; }
	my $status = $self->status($part);
	if ($self->getCompletionStatus($part) == ATTEMPTED() \|\|
	$self->getCompletionStatus($part) == CREDIT_ATTEMPTED() \|\|
	$status == ANSWER_SUBMITTED() ) {
	if ($self->tries($part) < $self->maxtries($part) \|\| !$self->maxtries($part)) {
	return 1;
	}
	}
	if ($status == OPEN() \|\| $status == TRIES_LEFT() \|\| $status == NETWORK_FAILURE()) {
	return 1;
	}
	}
	# None of the parts were answerable, so neither is this problem.
	return 0;
	}

	=pod

=head2 Resource/Nav Map Navigation	=head2 Resource/Nav Map Navigation

=over 4	=over 4
Line 5643 sub getPrevious {	Line 5993 sub getPrevious {
my $self = shift;	my $self = shift;
my @branches;	my @branches;
my $from = $self->from();	my $from = $self->from();
foreach my $branch ( split /,/, $from) {	foreach my $branch ( split(/,/, $from)) {
my $choice = $self->{NAV_MAP}->getById($branch);	my $choice = $self->{NAV_MAP}->getById($branch);
my $prev = $choice->comesfrom();	my $prev = $choice->comesfrom();
$prev = $self->{NAV_MAP}->getById($prev);	$prev = $self->{NAV_MAP}->getById($prev);
Line 5655 sub getPrevious {	Line 6005 sub getPrevious {

sub browsePriv {	sub browsePriv {
my $self = shift;	my $self = shift;
	my $noblockcheck = shift;
if (defined($self->{BROWSE_PRIV})) {	if (defined($self->{BROWSE_PRIV})) {
return $self->{BROWSE_PRIV};	return $self->{BROWSE_PRIV};
}	}

$self->{BROWSE_PRIV} = &Apache::lonnet::allowed('bre',$self->src(),	$self->{BROWSE_PRIV} = &Apache::lonnet::allowed('bre',$self->src(),
$self->symb());	$self->{SYMB},undef,
	undef,$noblockcheck);
}	}

=pod	=pod

FreeBSD-CVSweb <freebsd-cvsweb@FreeBSD.org>

Removed from v.1.493
changed lines
	Added in v.1.509.2.10