loncom/interface/lonnavmaps.pm - diff

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Diff for /loncom/interface/lonnavmaps.pm between versions 1.184 and 1.195

version 1.184, 2003/05/05 17:44:03	version 1.195, 2003/06/10 15:45:16
Line 47 use Apache::Constants qw(:common :http);	Line 47 use Apache::Constants qw(:common :http);
use Apache::loncommon();	use Apache::loncommon();
use Apache::lonmenu();	use Apache::lonmenu();
use POSIX qw (floor strftime);	use POSIX qw (floor strftime);
	use Data::Dumper; # for debugging, not always used

# symbolic constants	# symbolic constants
sub SYMB { return 1; }	sub SYMB { return 1; }
Line 71 my %statusIconMap =	Line 72 my %statusIconMap =
$resObj->TRIES_LEFT => 'navmap.open.gif',	$resObj->TRIES_LEFT => 'navmap.open.gif',
$resObj->INCORRECT => 'navmap.wrong.gif',	$resObj->INCORRECT => 'navmap.wrong.gif',
$resObj->OPEN => 'navmap.open.gif',	$resObj->OPEN => 'navmap.open.gif',
$resObj->ATTEMPTED => 'navmap.open.gif' );	$resObj->ATTEMPTED => 'navmap.open.gif',
	$resObj->ANSWER_SUBMITTED => '' );

my %iconAltTags =	my %iconAltTags =
( 'navmap.correct.gif' => 'Correct',	( 'navmap.correct.gif' => 'Correct',
Line 199 sub real_handler {	Line 201 sub real_handler {
}	}
}	}

	my $jumpToFirstHomework = 0;
# Check to see if the student is jumping to next open, do-able problem	# Check to see if the student is jumping to next open, do-able problem
if ($ENV{QUERY_STRING} eq 'jumpToFirstHomework') {	if ($ENV{QUERY_STRING} eq 'jumpToFirstHomework') {
	$jumpToFirstHomework = 1;
# Find the next homework problem that they can do.	# Find the next homework problem that they can do.
my $iterator = $navmap->getIterator(undef, undef, undef, 1);	my $iterator = $navmap->getIterator(undef, undef, undef, 1);
my $depth = 1;	my $depth = 1;
Line 215 sub real_handler {	Line 219 sub real_handler {

if (ref($curRes) && $curRes->is_problem()) {	if (ref($curRes) && $curRes->is_problem()) {
my $status = $curRes->status();	my $status = $curRes->status();
if (($status == $curRes->OPEN \|\|	if ($curRes->completable()) {
$status == $curRes->TRIES_LEFT()) &&
$curRes->getCompletionStatus() != $curRes->ATTEMPTED()) {
$problemRes = $curRes;	$problemRes = $curRes;
$foundDoableProblem = 1;	$foundDoableProblem = 1;

Line 245 sub real_handler {	Line 247 sub real_handler {
"Go To My First Homework Problem</a><br />");	"Go To My First Homework Problem</a><br />");
}	}

# renderer call	my $suppressEmptySequences = 0;
my $render = render({ 'cols' => [0,1,2,3],	my $filterFunc = undef;
'url' => '/adm/navmaps',	# Display only due homework.
'navmap' => $navmap,	my $showOnlyHomework = 0;
'suppressNavmap' => 1,	if ($ENV{QUERY_STRING} eq 'showOnlyHomework') {
'r' => $r});	$showOnlyHomework = 1;
	$suppressEmptySequences = 1;
	$filterFunc = sub { my $res = shift;
	return $res->completable() \|\| $res->is_sequence();
	};
	$r->print("<p><font size='+2'>Uncompleted Homework</font></p>");
	$ENV{'form.filter'} = '';
	$ENV{'form.condition'} = 1;
	} else {
	$r->print("<a href='navmaps?showOnlyHomework'>" .
	"Show Only Uncompleted Homework</a><br />");
	}

	# renderer call
	my $renderArgs = { 'cols' => [0,1,2,3],
	'url' => '/adm/navmaps',
	'navmap' => $navmap,
	'suppressNavmap' => 1,
	'suppressEmptySequences' => $suppressEmptySequences,
	'filterFunc' => $filterFunc,
	'r' => $r};
	my $render = render($renderArgs);
$navmap->untieHashes();	$navmap->untieHashes();

	# If no resources were printed, print a reassuring message so the
	# user knows there was no error.
	if ($renderArgs->{'counter'} == 0) {
	if ($showOnlyHomework) {
	$r->print("<p><font size='+1'>All homework is currently completed.</font></p>");
	} else { # both jumpToFirstHomework and normal use the same: course must be empty
	$r->print("<p><font size='+1'>This course is empty.</font></p>");
	}
	}

$r->print("</body></html>");	$r->print("</body></html>");
$r->rflush();	$r->rflush();

Line 365 sub getDescription {	Line 397 sub getDescription {
return "No due date $triesString";	return "No due date $triesString";
}	}
}	}
	if ($status == $res->ANSWER_SUBMITTED) {
	return 'Answer submitted';
	}
}	}

# Convenience function, so others can use it: Is the problem due in less then	# Convenience function, so others can use it: Is the problem due in less then
Line 733 returns a true or false value. If true,	Line 768 returns a true or false value. If true,
false, it is simply skipped in the display. By default, all resources	false, it is simply skipped in the display. By default, all resources
are shown.	are shown.

	=item * B<suppressEmptySequences>:

	If you're using a filter function, and displaying sequences to orient
	the user, then frequently some sequences will be empty. Setting this to
	true will cause those sequences not to display, so as not to confuse the
	user into thinking that if the sequence is there there should be things
	under it.

=item * B<suppressNavmaps>:	=item * B<suppressNavmaps>:

If true, will not display Navigate Content resources. Default to	If true, will not display Navigate Content resources. Default to
Line 796 sub render_resource {	Line 839 sub render_resource {
my $icon = "<img src='/adm/lonIcons/html.gif' alt='' border='0' />";	my $icon = "<img src='/adm/lonIcons/html.gif' alt='' border='0' />";

if ($resource->is_problem()) {	if ($resource->is_problem()) {
if ($part eq "" \|\| $params->{'condensed'}) {	if ($part eq '0' \|\| $params->{'condensed'}) {
$icon = '<img src="/adm/lonIcons/problem.gif" alt="" border="0" />';	$icon = '<img src="/adm/lonIcons/problem.gif" alt="" border="0" />';
} else {	} else {
$icon = $params->{'indentString'};	$icon = $params->{'indentString'};
Line 866 sub render_resource {	Line 909 sub render_resource {
$params->{'displayedHereMarker'} = 1;	$params->{'displayedHereMarker'} = 1;
}	}

if ($resource->is_problem() && $part ne "" &&	if ($resource->is_problem() && $part ne '0' &&
!$params->{'condensed'}) {	!$params->{'condensed'}) {
$partLabel = " (Part $part)";	$partLabel = " (Part $part)";
$title = "";	$title = "";
Line 958 sub render_long_status {	Line 1001 sub render_long_status {
$params->{'multipart'} && $part eq "0";	$params->{'multipart'} && $part eq "0";

my $color;	my $color;
if ($resource->is_problem()) {	if ($resource->is_problem() && ($resource->countParts() <= 1 \|\| $part ne '') ) {
$color = $colormap{$resource->status};	$color = $colormap{$resource->status};

if (dueInLessThen24Hours($resource, $part) \|\|	if (dueInLessThen24Hours($resource, $part) \|\|
Line 978 sub render_long_status {	Line 1021 sub render_long_status {
$result .= '(randomly select ' . $resource->randompick() .')';	$result .= '(randomly select ' . $resource->randompick() .')';
}	}

$result .= " </td>\n";	$result .= " - $part  </td>\n";

return $result;	return $result;
}	}
Line 1029 sub render {	Line 1072 sub render {
}	}
}	}

	# Filter: Remember filter function and add our own filter: Refuse
	# to show hidden resources unless the user can see them.
	my $userCanSeeHidden = advancedUser();
	my $filterFunc = setDefault($args->{'filterFunc'},
	sub {return 1;});
	if (!$userCanSeeHidden) {
	# Without renaming the filterfunc, the server seems to go into
	# an infinite loop
	my $oldFilterFunc = $filterFunc;
	$filterFunc = sub { my $res = shift; return !$res->randomout() &&
	&$oldFilterFunc($res);};
	}

my $condition = 0;	my $condition = 0;
if ($ENV{'form.condition'}) {	if ($ENV{'form.condition'}) {
$condition = 1;	$condition = 1;
Line 1125 sub render {	Line 1181 sub render {
}	}

# (re-)Locate the jump point, if any	# (re-)Locate the jump point, if any
	# Note this does not take filtering or hidden into account... need
	# to be fixed?
my $mapIterator = $navmap->getIterator(undef, undef, $filterHash, 0);	my $mapIterator = $navmap->getIterator(undef, undef, $filterHash, 0);
my $depth = 1;	my $depth = 1;
$mapIterator->next();	$mapIterator->next();
Line 1157 sub render {	Line 1215 sub render {
my $printKey = $args->{'printKey'};	my $printKey = $args->{'printKey'};
my $printCloseAll = $args->{'printCloseAll'};	my $printCloseAll = $args->{'printCloseAll'};
if (!defined($printCloseAll)) { $printCloseAll = 1; }	if (!defined($printCloseAll)) { $printCloseAll = 1; }
my $filterFunc = setDefault($args->{'filterFunc'},
sub {return 1;});

# Print key?	# Print key?
if ($printKey) {	if ($printKey) {
Line 1219 sub render {	Line 1275 sub render {
$args->{'indentString'} = setDefault($args->{'indentString'}, "<img src='/adm/lonIcons/whitespace1.gif' width='25' height='1' alt='' border='0' />");	$args->{'indentString'} = setDefault($args->{'indentString'}, "<img src='/adm/lonIcons/whitespace1.gif' width='25' height='1' alt='' border='0' />");
$args->{'displayedHereMarker'} = 0;	$args->{'displayedHereMarker'} = 0;

	# If we're suppressing empty sequences, look for them here. Use DFS for speed,
	# since structure actually doesn't matter, except what map has what resources.
	if ($args->{'suppressEmptySequences'}) {
	my $dfsit = Apache::lonnavmaps::DFSiterator->new($navmap,
	$it->{FIRST_RESOURCE},
	$it->{FINISH_RESOURCE},
	{}, undef, 1);
	$depth = 0;
	$dfsit->next();
	my $curRes = $dfsit->next();
	while ($depth > -1) {
	if ($curRes == $dfsit->BEGIN_MAP()) { $depth++; }
	if ($curRes == $dfsit->END_MAP()) { $depth--; }

	if (ref($curRes)) {
	# Parallel pre-processing: Do sequences have non-filtered-out children?
	if ($curRes->is_sequence()) {
	$curRes->{DATA}->{HAS_VISIBLE_CHILDREN} = 0;
	# Sequences themselves do not count as visible children,
	# unless those sequences also have visible children.
	# This means if a sequence appears, there's a "promise"
	# that there's something under it if you open it, somewhere.
	} else {
	# Not a sequence: if it's filtered, ignore it, otherwise
	# rise up the stack and mark the sequences as having children
	if (&$filterFunc($curRes)) {
	for my $sequence (@{$dfsit->getStack()}) {
	$sequence->{DATA}->{HAS_VISIBLE_CHILDREN} = 1;
	}
	}
	}
	}
	} continue {
	$curRes = $dfsit->next();
	}
	}

my $displayedJumpMarker = 0;	my $displayedJumpMarker = 0;
# Set up iteration.	# Set up iteration.
$depth = 1;	$depth = 1;
Line 1254 sub render {	Line 1347 sub render {
next;	next;
}	}

$args->{'counter'}++;

# If this has been filtered out, continue on	# If this has been filtered out, continue on
if (!(&$filterFunc($curRes))) {	if (!(&$filterFunc($curRes))) {
$args->{'isNewBranch'} = 0; # Don't falsely remember this	$args->{'isNewBranch'} = 0; # Don't falsely remember this
next;	next;
}	}

	# If this is an empty sequence and we're filtering them, continue on
	if ($curRes->is_sequence() && $args->{'suppressEmptySequences'} &&
	!$curRes->{DATA}->{HAS_VISIBLE_CHILDREN}) {
	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
if ($suppressNavmap && $curRes->src() =~ /^\/adm\/navmaps/) {	if ($suppressNavmap && $curRes->src() =~ /^\/adm\/navmaps/) {
next;	next;
}	}

	$args->{'counter'}++;

# Does it have multiple parts?	# Does it have multiple parts?
$args->{'multipart'} = 0;	$args->{'multipart'} = 0;
$args->{'condensed'} = 0;	$args->{'condensed'} = 0;
Line 1275 sub render {	Line 1374 sub render {
# Decide what parts to show.	# Decide what parts to show.
if ($curRes->is_problem() && $showParts) {	if ($curRes->is_problem() && $showParts) {
@parts = @{$curRes->parts()};	@parts = @{$curRes->parts()};
$args->{'multipart'} = scalar(@parts) > 1;	$args->{'multipart'} = $curRes->multipart();

if ($condenseParts) { # do the condensation	if ($condenseParts) { # do the condensation
if (!$curRes->opendate("0")) {	if (!$curRes->opendate("0")) {
Line 1284 sub render {	Line 1383 sub render {
}	}
if (!$args->{'condensed'}) {	if (!$args->{'condensed'}) {
# Decide whether to condense based on similarity	# Decide whether to condense based on similarity
my $status = $curRes->status($parts[1]);	my $status = $curRes->status($parts[0]);
my $due = $curRes->duedate($parts[1]);	my $due = $curRes->duedate($parts[0]);
my $open = $curRes->opendate($parts[1]);	my $open = $curRes->opendate($parts[0]);
my $statusAllSame = 1;	my $statusAllSame = 1;
my $dueAllSame = 1;	my $dueAllSame = 1;
my $openAllSame = 1;	my $openAllSame = 1;
for (my $i = 2; $i < scalar(@parts); $i++) {	for (my $i = 1; $i < scalar(@parts); $i++) {
if ($curRes->status($parts[$i]) != $status){	if ($curRes->status($parts[$i]) != $status){
$statusAllSame = 0;	$statusAllSame = 0;
}	}
Line 1311 sub render {	Line 1410 sub render {
if (($statusAllSame && defined($condenseStatuses{$status})) \|\|	if (($statusAllSame && defined($condenseStatuses{$status})) \|\|
($dueAllSame && $status == $curRes->OPEN && $statusAllSame)\|\|	($dueAllSame && $status == $curRes->OPEN && $statusAllSame)\|\|
($openAllSame && $status == $curRes->OPEN_LATER && $statusAllSame) ){	($openAllSame && $status == $curRes->OPEN_LATER && $statusAllSame) ){
@parts = ();	@parts = ($parts[0]);
$args->{'condensed'} = 1;	$args->{'condensed'} = 1;
}	}

Line 1322 sub render {	Line 1421 sub render {
# If the multipart problem was condensed, "forget" it was multipart	# If the multipart problem was condensed, "forget" it was multipart
if (scalar(@parts) == 1) {	if (scalar(@parts) == 1) {
$args->{'multipart'} = 0;	$args->{'multipart'} = 0;
	} else {
	# Add part 0 so we display it correctly.
	unshift @parts, '0';
}	}

# 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.
foreach my $part ('', @parts) {	foreach my $part (@parts) {
if ($part eq '0') {
next;
}
$rownum ++;	$rownum ++;
my $backgroundColor = $backgroundColors[$rownum % scalar(@backgroundColors)];	my $backgroundColor = $backgroundColors[$rownum % scalar(@backgroundColors)];

Line 1489 sub new {	Line 1588 sub new {
return undef;	return undef;
}	}

$self->{NAV_HASH} = \%navmaphash;	# try copying into memory
	my %tmpnavhash;
	while (my ($k, $v) = each(%navmaphash)) {
	$tmpnavhash{$k} = $v;
	}
	untie %navmaphash;

	$self->{NAV_HASH} = \%tmpnavhash;
$self->{PARM_HASH} = \%parmhash;	$self->{PARM_HASH} = \%parmhash;
$self->{INITED} = 0;	$self->{INITED} = 0;

Line 1563 sub init {	Line 1669 sub init {
my %emailstatus = &Apache::lonnet::dump('email_status');	my %emailstatus = &Apache::lonnet::dump('email_status');
my $logoutTime = $emailstatus{'logout'};	my $logoutTime = $emailstatus{'logout'};
my $courseLeaveTime = $emailstatus{'logout_'.$ENV{'request.course.id'}};	my $courseLeaveTime = $emailstatus{'logout_'.$ENV{'request.course.id'}};
$self->{LAST_CHECK} = ($courseLeaveTime < $logoutTime ?	$self->{LAST_CHECK} = (($courseLeaveTime > $logoutTime) ?
$courseLeaveTime : $logoutTime);	$courseLeaveTime : $logoutTime);
my %discussiontime = &Apache::lonnet::dump('discussiontimes',	my %discussiontime = &Apache::lonnet::dump('discussiontimes',
$cdom, $cnum);	$cdom, $cnum);
Line 1680 object for that resource. This method, o	Line 1786 object for that resource. This method, o
(as in the resource object) is the only proper way to obtain a	(as in the resource object) is the only proper way to obtain a
resource object.	resource object.

	=item * B<getBySymb>(symb):

	Based on the symb of the resource, get a resource object for that
	resource. This is one of the proper ways to get a resource object.

	=item * B<getMapByMapPc>(map_pc):

	Based on the map_pc of the resource, get a resource object for
	the given map. This is one of the proper ways to get a resource object.

=cut	=cut

# The strategy here is to cache the resource objects, and only construct them	# The strategy here is to cache the resource objects, and only construct them
Line 1710 sub getBySymb {	Line 1826 sub getBySymb {
return $self->getById($map->map_pc() . '.' . $id);	return $self->getById($map->map_pc() . '.' . $id);
}	}

	sub getByMapPc {
	my $self = shift;
	my $map_pc = shift;
	my $map_id = $self->{NAV_HASH}->{'map_id_' . $map_pc};
	$map_id = $self->{NAV_HASH}->{'ids_' . $map_id};
	return $self->getById($map_id);
	}

=pod	=pod

=item * B<firstResource>():	=item * B<firstResource>():
Line 2190 sub new {	Line 2314 sub new {

$curRes->{DATA}->{DISPLAY_DEPTH} = $finalDepth;	$curRes->{DATA}->{DISPLAY_DEPTH} = $finalDepth;
if ($finalDepth > $maxDepth) {$maxDepth = $finalDepth;}	if ($finalDepth > $maxDepth) {$maxDepth = $finalDepth;}
}	}
	} continue {
$curRes = $iterator->next();	$curRes = $iterator->next();
}	}
}	}
Line 2567 sub next {	Line 2692 sub next {
return $self->{HERE};	return $self->{HERE};
}	}

	# Identical to the full iterator methods of the same name. Hate to copy/paste
	# but I also hate to "inherit" either iterator from the other.

	sub getStack {
	my $self=shift;

	my @stack;

	$self->populateStack(\@stack);

	return \@stack;
	}

	# Private method: Calls the iterators recursively to populate the stack.
	sub populateStack {
	my $self=shift;
	my $stack = shift;

	push @$stack, $self->{HERE} if ($self->{HERE});

	if ($self->{RECURSIVE_ITERATOR_FLAG}) {
	$self->{RECURSIVE_ITERATOR}->populateStack($stack);
	}
	}

1;	1;

package Apache::lonnavmaps::resource;	package Apache::lonnavmaps::resource;
Line 2590 You will probably never need to instanti	Line 2740 You will probably never need to instanti
Apache::lonnavmaps::navmap, and use the "start" method to obtain the	Apache::lonnavmaps::navmap, and use the "start" method to obtain the
starting resource.	starting resource.

	Resource objects respect the parameter_hiddenparts, which suppresses
	various parts according to the wishes of the map author. As of this
	writing, there is no way to override this parameter, and suppressed
	parts will never be returned, nor will their response types or ids be
	stored.

=head2 Public Members	=head2 Public Members

resource objects have a hash called DATA ($resourceRef->{DATA}) that	resource objects have a hash called DATA ($resourceRef->{DATA}) that
Line 2799 sub is_sequence {	Line 2955 sub is_sequence {
sub parmval {	sub parmval {
my $self = shift;	my $self = shift;
my $what = shift;	my $what = shift;
my $part = shift \|\| "0";	my $part = shift;
	if (!defined($part)) {
	$part = '0';
	}
return $self->{NAV_MAP}->parmval($part.'.'.$what, $self->symb());	return $self->{NAV_MAP}->parmval($part.'.'.$what, $self->symb());
}	}

Line 2973 sub opendate {	Line 3132 sub opendate {
}	}
return $self->parmval("opendate");	return $self->parmval("opendate");
}	}
	sub problemstatus {
	(my $self, my $part) = @_;
	return $self->parmval("problemstatus", $part);
	}
sub sig {	sub sig {
(my $self, my $part) = @_;	(my $self, my $part) = @_;
return $self->parmval("sig", $part);	return $self->parmval("sig", $part);
Line 3073 sub getErrors {	Line 3236 sub getErrors {
=item * B<parts>():	=item * B<parts>():

Returns a list reference containing sorted strings corresponding to	Returns a list reference containing sorted strings corresponding to
each part of the problem. To count the number of parts, use the list	each part of the problem. Single part problems have only a part '0'.
in a scalar context, and subtract one if greater than two. (One part	Multipart problems do not return their part '0', since they typically
problems have a part 0. Multi-parts have a part 0, plus a part for	do not really matter.
each part. Filtering part 0 if you want it is up to you.)

=item * B<countParts>():	=item * B<countParts>():

Returns the number of parts of the problem a student can answer. Thus,	Returns the number of parts of the problem a student can answer. Thus,
for single part problems, returns 1. For multipart, it returns the	for single part problems, returns 1. For multipart, it returns the
number of parts in the problem, not including psuedo-part 0. Thus,	number of parts in the problem, not including psuedo-part 0.
B<parts> may return an array with fewer parts in it then countParts
might lead you to believe.	=item * B<multipart>():

	Returns true if the problem is multipart, false otherwise. Use this instead
	of countParts if all you want is multipart/not multipart.

	=item * B<responseType>($part):

	Returns the response type of the part, without the word "response" on the
	end. Example return values: 'string', 'essay', 'numeric', etc.

	=item * B<responseIds>($part):

	Retreives the response IDs for the given part as an array reference containing
	strings naming the response IDs. This may be empty.

=back	=back

Line 3093 might lead you to believe.	Line 3268 might lead you to believe.
sub parts {	sub parts {
my $self = shift;	my $self = shift;

if ($self->ext) { return ['0']; }	if ($self->ext) { return []; }

$self->extractParts();	$self->extractParts();
return $self->{PARTS};	return $self->{PARTS};
Line 3103 sub countParts {	Line 3278 sub countParts {
my $self = shift;	my $self = shift;

my $parts = $self->parts();	my $parts = $self->parts();
my $delta = 0;
for my $part (@$parts) {	# If I left this here, then it's not necessary.
if ($part eq '0') { $delta--; }	#my $delta = 0;
}	#for my $part (@$parts) {
	# if ($part eq '0') { $delta--; }
	#}

if ($self->{RESOURCE_ERROR}) {	if ($self->{RESOURCE_ERROR}) {
return 0;	return 0;
}	}

return scalar(@{$parts}) + $delta;	return scalar(@{$parts}); # + $delta;
	}

	sub multipart {
	my $self = shift;
	return $self->countParts() > 1;
	}

	sub responseType {
	my $self = shift;
	my $part = shift;

	$self->extractParts();
	return $self->{RESPONSE_TYPE}->{$part};
}	}

sub partType {	sub responseIds {
my $self = shift;	my $self = shift;
my $part = shift;	my $part = shift;

$self->extractParts();	$self->extractParts();
return $self->{PART_TYPE}->{$part};	return $self->{RESPONSE_IDS}->{$part};
}	}

# Private function: Extracts the parts information, both part names and	# Private function: Extracts the parts information, both part names and
# part types, and saves it	# part types, and saves it.
sub extractParts {	sub extractParts {
my $self = shift;	my $self = shift;

Line 3163 sub extractParts {	Line 3353 sub extractParts {

my @sortedParts = sort keys %parts;	my @sortedParts = sort keys %parts;
$self->{PARTS} = \@sortedParts;	$self->{PARTS} = \@sortedParts;

	my %responseIdHash;
	my %responseTypeHash;


	# Init the responseIdHash
	foreach (@{$self->{PARTS}}) {
	$responseIdHash{$_} = [];
	}

	# Now, the unfortunate thing about this is that parts, part name, and
	# response if are delimited by underscores, but both the part
	# name and response id can themselves have underscores in them.
	# 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
	# to construct ambiguous situations.
	foreach (split /,/, $metadata) {
	if ($_ =~ /^([a-zA-Z]+)response_(.*)/) {
	my $responseType = $1;
	my $partStuff = $2;
	my $partIdSoFar = '';
	my @partChunks = split /_/, $partStuff;
	my $i = 0;

	for ($i = 0; $i < scalar(@partChunks); $i++) {
	if ($partIdSoFar) { $partIdSoFar .= '_'; }
	$partIdSoFar .= $partChunks[$i];
	if ($parts{$partIdSoFar}) {
	my @otherChunks = @partChunks[$i+1..$#partChunks];
	my $responseId = join('_', @otherChunks);
	push @{$responseIdHash{$partIdSoFar}}, $responseId;
	$responseTypeHash{$partIdSoFar} = $responseType;
	last;
	}
	}
	}
	}

	$self->{RESPONSE_IDS} = \%responseIdHash;
	$self->{RESPONSE_TYPES} = \%responseTypeHash;
}	}

return;	return;
Line 3366 sub queryRestoreHash {	Line 3596 sub queryRestoreHash {
my $self = shift;	my $self = shift;
my $hashentry = shift;	my $hashentry = shift;
my $part = shift;	my $part = shift;
$part = "0" if (!defined($part));	$part = "0" if (!defined($part) \|\| $part eq '');
return $self->NETWORK_FAILURE if ($self->{NAV_MAP}->{NETWORK_FAILURE});	return $self->NETWORK_FAILURE if ($self->{NAV_MAP}->{NETWORK_FAILURE});

$self->getReturnHash();	$self->getReturnHash();
Line 3381 B<Composite Status>	Line 3611 B<Composite Status>
Along with directly returning the date or completion status, the	Along with directly returning the date or completion status, the
resource object includes a convenience function B<status>() that will	resource object includes a convenience function B<status>() that will
combine the two status tidbits into one composite status that can	combine the two status tidbits into one composite status that can
represent the status of the resource as a whole. The precise logic is	represent the status of the resource as a whole. This method represents
	the concept of the thing we want to display to the user on the nav maps
	screen, which is a combination of completion and open status. The precise logic is
documented in the comments of the status method. The following results	documented in the comments of the status method. The following results
may be returned, all available as methods on the resource object	may be returned, all available as methods on the resource object
($res->NETWORK_FAILURE):	($res->NETWORK_FAILURE): In addition to the return values that match
	the date or completion status, this function can return "ANSWER_SUBMITTED"
	if that problemstatus parameter value is set to No, suppressing the
	incorrect/correct feedback.

=over 4	=over 4

Line 3443 The item is open and not yet tried.	Line 3678 The item is open and not yet tried.

The problem has been attempted.	The problem has been attempted.

	=item * B<ANSWER_SUBMITTED>:

	An answer has been submitted, but the student should not see it.

=back	=back

=cut	=cut

sub TRIES_LEFT { return 10; }	sub TRIES_LEFT { return 20; }
	sub ANSWER_SUBMITTED { return 21; }

sub status {	sub status {
my $self = shift;	my $self = shift;
Line 3462 sub status {	Line 3702 sub status {

if ($completionStatus == NETWORK_FAILURE) { return NETWORK_FAILURE; }	if ($completionStatus == NETWORK_FAILURE) { return NETWORK_FAILURE; }

	my $suppressFeedback = lc($self->parmval("problemstatus", $part)) eq 'no';

# There are a few whole rows we can dispose of:	# There are a few whole rows we can dispose of:
if ($completionStatus == CORRECT \|\|	if ($completionStatus == CORRECT \|\|
$completionStatus == CORRECT_BY_OVERRIDE ) {	$completionStatus == CORRECT_BY_OVERRIDE ) {
return CORRECT;	return $suppressFeedback? ANSWER_SUBMITTED : CORRECT;
}	}

if ($completionStatus == ATTEMPTED) {	if ($completionStatus == ATTEMPTED) {
Line 3506 sub status {	Line 3748 sub status {
if ($self->tries($part) < $self->maxtries($part) \|\| !$self->maxtries($part)) {	if ($self->tries($part) < $self->maxtries($part) \|\| !$self->maxtries($part)) {
return TRIES_LEFT;	return TRIES_LEFT;
}	}
return INCORRECT; # otherwise, return orange; student can't fix this	return $suppressFeedback ? ANSWER_SUBMITTED : INCORRECT; # otherwise, return orange; student can't fix this
}	}

# Otherwise, it's untried and open	# Otherwise, it's untried and open
Line 3514 sub status {	Line 3756 sub status {
}	}

=pod	=pod

	B<Completable>

	The completable method represents the concept of I<whether the student can
	currently do the problem>. If the student can do the problem, which means
	that it is open, there are tries left, and if the problem is manually graded
	or the grade is suppressed via problemstatus, the student has not tried it
	yet, then the method returns 1. Otherwise, it returns 0, to indicate that
	either the student has tried it and there is no feedback, or that for
	some reason it is no longer completable (not open yet, successfully completed,
	out of tries, etc.). As an example, this is used as the filter for the
	"Uncompleted Homework" option for the nav maps.

	If this does not quite meet your needs, do not fiddle with it (unless you are
	fixing it to better match the student's conception of "completable" because
	it's broken somehow)... make a new method.

	=cut

	sub completable {
	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 any of the parts are open, or have tries left (implies open),
	# and it is not "attempted" (manually graded problem), it is
	# not "complete"
	if (!(($status == OPEN() \|\| $status == TRIES_LEFT())
	&& $self->getCompletionStatus($part) != ATTEMPTED()
	&& $status != ANSWER_SUBMITTED())) {
	return 0;
	}
	}

	# If all the parts were complete, so was this problem.
	return 1;
	}

	=pod

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

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

Removed from v.1.184
changed lines
	Added in v.1.195