loncom/interface/lonnavmaps.pm - diff

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Diff for /loncom/interface/lonnavmaps.pm between versions 1.389 and 1.415.4.1

version 1.389, 2006/06/29 16:32:14	version 1.415.4.1, 2009/09/15 00:52:39
Line 31 package Apache::lonnavmaps;	Line 31 package Apache::lonnavmaps;

use strict;	use strict;
use GDBM_File;	use GDBM_File;
use Apache::Constants qw(:common :http);
use Apache::loncommon();	use Apache::loncommon();
use Apache::lonmenu();
use Apache::lonenc();	use Apache::lonenc();
use Apache::lonlocal;	use Apache::lonlocal;
use Apache::lonnet;	use Apache::lonnet;
use POSIX qw (floor strftime);	use POSIX qw (floor strftime);
use Data::Dumper; # for debugging, not always
use Time::HiRes qw( gettimeofday tv_interval );	use Time::HiRes qw( gettimeofday tv_interval );
use lib '/home/httpd/lib/perl/';
use LONCAPA;	use LONCAPA;
	use DateTime();

# symbolic constants	# symbolic constants
sub SYMB { return 1; }	sub SYMB { return 1; }
Line 88 my %colormap =	Line 85 my %colormap =
$resObj->PARTIALLY_CORRECT => '#006600'	$resObj->PARTIALLY_CORRECT => '#006600'
);	);
# And a special case in the nav map; what to do when the assignment	# And a special case in the nav map; what to do when the assignment
# is not yet done and due in less then 24 hours	# is not yet done and due in less than 24 hours
my $hurryUpColor = "#FF0000";	my $hurryUpColor = "#FF0000";

sub launch_win {
my ($mode,$script,$toplinkitems,$firsttime)=@_;
my $result;
if ($script ne 'no') {
$result.='<script type="text/javascript">';
}
if ($firsttime) {
$result.='function launch_navmapwin() {
newWindow=open(\'/adm/navmaps?launchExternalRoles\',\'loncapanav\',\'width=400,height=600,scrollbars=1\');
}';
} else {
$result.='function launch_navmapwin() {
newWindow=open(\'/adm/navmaps?launchExternal\',\'loncapanav\',\'width=400,height=600,scrollbars=1\');
}';
}
if ($mode eq 'now') {
$result.="\nlaunch_navmapwin();\n";
}
if ($script ne 'no') {
$result.='</script>';
}
if ($mode eq 'link') {
&add_linkitem($toplinkitems,'launchnav','launch_navmapwin()',
"Launch navigation window");
}
return $result;
}

sub close {	sub close {
if ($env{'environment.remotenavmap'} ne 'on') { return ''; }	if ($env{'environment.remotenavmap'} ne 'on') { return ''; }
return(<<ENDCLOSE);	return(<<ENDCLOSE);
Line 147 this.document.navform.submit();	Line 116 this.document.navform.submit();
ENDUPDATE	ENDUPDATE
}	}

sub handler {
my $r = shift;
real_handler($r);
}

sub real_handler {
my $r = shift;
#my $t0=[&gettimeofday()];
# Handle header-only request
if ($r->header_only) {
if ($env{'browser.mathml'}) {
&Apache::loncommon::content_type($r,'text/xml');
} else {
&Apache::loncommon::content_type($r,'text/html');
}
$r->send_http_header;
return OK;
}

# Send header, don't cache this page
if ($env{'browser.mathml'}) {
&Apache::loncommon::content_type($r,'text/xml');
} else {
&Apache::loncommon::content_type($r,'text/html');
}
&Apache::loncommon::no_cache($r);

my %toplinkitems=();
&add_linkitem(\%toplinkitems,'blank','',"Select Action");
if ($ENV{QUERY_STRING} eq 'collapseExternal') {
&Apache::lonnet::put('environment',{'remotenavmap' => 'off'});
&Apache::lonnet::appenv('environment.remotenavmap' => 'off');
my $menu=&Apache::lonmenu::reopenmenu();
my $navstatus=&Apache::lonmenu::get_nav_status();
if ($menu) {
$menu=(<<MENU)
swmenu=$menu
swmenu.clearTimeout(swmenu.menucltim);
$navstatus
MENU
} else {
my $nothing = &Apache::lonhtmlcommon::javascript_nothing();
my $mainwindow='window.open('.$nothing.',"loncapaclient","",false);';
$menu=(<<MENU)
swmenu=$mainwindow
$navstatus
MENU
}
$r->send_http_header;
my $js =<<"ENDSUBM";
<script type="text/javascript">
function submitthis() {
$menu
self.close();
}

</script>
ENDSUBM
$r->print(&Apache::loncommon::start_page(undef,$js,
{'only_body' => 1,
'bgcolor' => '#FFFFFF',
'add_entries' =>
{'onload' =>
"submitthis()"}}).
&Apache::loncommon::end_page());

return OK;
}
if ($ENV{QUERY_STRING} =~ /^launchExternal/) {
&Apache::lonnet::put('environment',{'remotenavmap' => 'on'});
&Apache::lonnet::appenv('environment.remotenavmap' => 'on');
my $menu=&Apache::lonmenu::reopenmenu();
my $navstatus=&Apache::lonmenu::get_nav_status();
if ($menu) {
$r->print(<<MENU);
<script type="text/javascript">
swmenu=$menu
swmenu.clearTimeout(swmenu.menucltim);
$navstatus
</script>
MENU
}
}
if ($ENV{QUERY_STRING} eq 'turningOffExternal') {
$env{'environment.remotenavmap'}='off';
}

# Create the nav map
my $navmap = Apache::lonnavmaps::navmap->new();

if (!defined($navmap)) {
my $requrl = $r->uri;
$env{'user.error.msg'} = "$requrl:bre:0:0:Course not initialized";
return HTTP_NOT_ACCEPTABLE;
}
$r->send_http_header;

# ------------------------------------------------------------ Get query string
&Apache::loncommon::get_unprocessed_cgi($ENV{'QUERY_STRING'},['register','sort','showOnlyHomework','postsymb']);

# ----------------------------------------------------- Force menu registration
my $body_only='';
my $js;
if ($env{'environment.remotenavmap'} eq 'on') {
$js='<script type="text/javascript">
function collapse() {
this.document.location="/adm/navmaps?collapseExternal";
}
</script>';
$body_only=1;
}

# Header
my $course_type = &Apache::loncommon::course_type();
$r->print(&Apache::loncommon::start_page('Navigate '.$course_type.
' Contents',
$js,
{'only_body' => $body_only,
'force_register' =>
$env{'form.register'},}));
$r->print('<script type="text/javascript">window.focus();</script>');

$r->rflush();

# Check that it's defined
if (!($navmap->courseMapDefined())) {
$r->print(&Apache::loncommon::help_open_menu('Navigation Screen','Navigation_Screen',undef,'RAT'));
$r->print('<span class="LC_error">'.&mt('Coursemap undefined.').
'</span>' .
&Apache::loncommon::end_page());
return OK;
}

# See if there's only one map in the top-level, if we don't
# already have a filter... if so, automatically display it
# (older code; should use retrieveResources)
if ($ENV{QUERY_STRING} !~ /filter/) {
my $iterator = $navmap->getIterator(undef, undef, undef, 0);
my $curRes;
my $sequenceCount = 0;
my $sequenceId;
while ($curRes = $iterator->next()) {
if (ref($curRes) && $curRes->is_sequence()) {
$sequenceCount++;
$sequenceId = $curRes->map_pc();
}
}

if ($sequenceCount == 1) {
# The automatic iterator creation in the render call
# will pick this up. We know the condition because
# the defined($env{'form.filter'}) also ensures this
# is a fresh call.
$env{'form.filter'} = "$sequenceId";
}
}

if ($ENV{QUERY_STRING} eq 'launchExternal') {
$r->print('
<form name="returnwin" action="/adm/flip?postdata=navlaunch%3a"
method="post" target="loncapaclient">
</form>');
$r->print('
<script type="text/javascript">
this.document.returnwin.submit();
</script>');
}

if ($env{'environment.remotenavmap'} ne 'on') {
$r->print(&launch_win('link','yes',\%toplinkitems));
}
if ($env{'environment.remotenavmap'} eq 'on') {
&add_linkitem(\%toplinkitems,'closenav','collapse()',
"Close navigation window");
}


# Check to see if the student is jumping to next open, do-able problem
if ($ENV{QUERY_STRING} =~ /^jumpToFirstHomework/) {
# Find the next homework problem that they can do.
my $iterator = $navmap->getIterator(undef, undef, undef, 1);
my $curRes;
my $foundDoableProblem = 0;
my $minimumduedate;

while ($curRes = $iterator->next()) {
if (ref($curRes) && $curRes->is_problem()) {
my $status = $curRes->status();
if ($curRes->completable()) {
my $thisduedate=$curRes->duedate();
unless ($foundDoableProblem) {
$minimumduedate=$thisduedate;
}

$foundDoableProblem = 1;

if ($thisduedate<=$minimumduedate) {
# Pop open all previous maps
my $stack = $iterator->getStack();
pop @$stack; # last resource in the stack is the problem
# itself, which we don't need in the map stack
my @mapPcs = map {$_->map_pc()} @$stack;
$env{'form.filter'} = join(',', @mapPcs);

# Mark as both "here" and "jump"
$env{'form.postsymb'} = $curRes->symb();
$minimumduedate=$thisduedate;
}
}
}
}

# If we found no problems, print a note to that effect.
if (!$foundDoableProblem) {
$r->print("<font size='+2'>All homework assignments have been completed.</font><br /><br />");
}
} else {
&add_linkitem(\%toplinkitems,'firsthomework',
'location.href="navmaps?jumpToFirstHomework"',
"Show my first due problem");
}

my $suppressEmptySequences = 0;
my $filterFunc = undef;
my $resource_no_folder_link = 0;

# Display only due homework.
my $showOnlyHomework = 0;
if ($env{'form.showOnlyHomework'} eq "1") {
$showOnlyHomework = 1;
$suppressEmptySequences = 1;
$filterFunc = sub { my $res = shift;
return $res->completable() \|\| $res->is_map();
};
&add_linkitem(\%toplinkitems,'everything',
'location.href="navmaps?sort='.$env{'form.sort'}.'"',
"Show everything");
$r->print("<p><font size='+2'>".&mt("Uncompleted Problems")."</font></p>");
$env{'form.filter'} = '';
$env{'form.condition'} = 1;
$resource_no_folder_link = 1;
} else {
&add_linkitem(\%toplinkitems,'uncompleted',
'location.href="navmaps?sort='.$env{'form.sort'}.
'&showOnlyHomework=1"',
"Show only uncompleted problems");
}

my %selected=($env{'form.sort'} => 'selected=on');
my $sort_html=("<form>
<nobr>
<input type=\"hidden\" name=\"showOnlyHomework\" value=\"".$env{'form.showOnlyHomework'}."\" />
<input type=\"submit\" value=\"".&mt('Sort by:')."\" />
<select name=\"sort\">
<option value=\"default\" $selected{'default'}>".&mt('Default')."</option>
<option value=\"title\" $selected{'title'} >".&mt('Title')."</option>
<option value=\"duedate\" $selected{'duedate'}>".&mt('Duedate')."</option>
<option value=\"discussion\" $selected{'discussion'}>".&mt('Has New Discussion')."</option>
</select>
</nobr>
</form>");
# renderer call
my $renderArgs = { 'cols' => [0,1,2,3],
'sort' => $env{'form.sort'},
'url' => '/adm/navmaps',
'navmap' => $navmap,
'suppressNavmap' => 1,
'suppressEmptySequences' => $suppressEmptySequences,
'filterFunc' => $filterFunc,
'resource_no_folder_link' => $resource_no_folder_link,
'sort_html'=> $sort_html,
'r' => $r,
'caller' => 'navmapsdisplay',
'linkitems' => \%toplinkitems};
my $render = render($renderArgs);

# 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'>".&mt("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>");
}
}
#my $td=&tv_interval($t0);
#$r->print("<br />$td");

$r->print(&Apache::loncommon::end_page());
$r->rflush();

return OK;
}

# Convenience functions: Returns a string that adds or subtracts	# Convenience functions: Returns a string that adds or subtracts
# the second argument from the first hash, appropriate for the	# the second argument from the first hash, appropriate for the
# query string that determines which folders to recurse on	# query string that determines which folders to recurse on
Line 473 sub getLinkForResource {	Line 148 sub getLinkForResource {
if (defined($res)) {	if (defined($res)) {
my $anchor;	my $anchor;
if ($res->is_page()) {	if ($res->is_page()) {
foreach (@$stack) { if (defined($_)) { $anchor = $_; } }	foreach my $item (@$stack) { if (defined($item)) { $anchor = $item; } }
$anchor=&escape($anchor->shown_symb());	$anchor=&escape($anchor->shown_symb());
return ($res->link(),$res->shown_symb(),$anchor);	return ($res->link(),$res->shown_symb(),$anchor);
}	}
Line 491 sub getLinkForResource {	Line 166 sub getLinkForResource {
# (when we first recurse on a map, it puts an undefined resource	# (when we first recurse on a map, it puts an undefined resource
# on the bottom because $self->{HERE} isn't defined yet, and we	# on the bottom because $self->{HERE} isn't defined yet, and we
# want the src for the map anyhow)	# want the src for the map anyhow)
foreach (@$stack) {	foreach my $item (@$stack) {
if (defined($_)) { $res = $_; }	if (defined($item)) { $res = $item; }
}	}

return ($res->link(),$res->shown_symb());	if ($res) {
	return ($res->link(),$res->shown_symb());
	}
	return;
}	}

# Convenience function: This separates the logic of how to create	# Convenience function: This separates the logic of how to create
Line 509 sub getDescription {	Line 187 sub getDescription {
my $part = shift;	my $part = shift;
my $status = $res->status($part);	my $status = $res->status($part);

	my $open = $res->opendate($part);
	my $due = $res->duedate($part);
	my $answer = $res->answerdate($part);

if ($status == $res->NETWORK_FAILURE) {	if ($status == $res->NETWORK_FAILURE) {
return &mt("Having technical difficulties; please check status later");	return &mt("Having technical difficulties; please check status later");
}	}
Line 516 sub getDescription {	Line 198 sub getDescription {
return &mt("Not currently assigned.");	return &mt("Not currently assigned.");
}	}
if ($status == $res->OPEN_LATER) {	if ($status == $res->OPEN_LATER) {
return "Open " . timeToHumanString($res->opendate($part),'start');	return &mt("Open ") .timeToHumanString($open,'start');
}	}
if ($status == $res->OPEN) {	if ($status == $res->OPEN) {
if ($res->duedate($part)) {	if ($due) {
return &mt("Due")." " .timeToHumanString($res->duedate($part),'end');	if ($res->is_practice()) {
	return &mt("Closes ")." " .timeToHumanString($due,'start');
	} else {
	return &mt("Due")." " .timeToHumanString($due,'end');
	}
} else {	} else {
return &mt("Open, no due date");	return &mt("Open, no due date");
}	}
}	}
if ($status == $res->PAST_DUE_ANSWER_LATER) {	if ($status == $res->PAST_DUE_ANSWER_LATER) {
return &mt("Answer open")." " . timeToHumanString($res->answerdate($part),'start');	return &mt("Answer open")." " .timeToHumanString($answer,'start');
}	}
if ($status == $res->PAST_DUE_NO_ANSWER) {	if ($status == $res->PAST_DUE_NO_ANSWER) {
return &mt("Was due")." " . timeToHumanString($res->duedate($part),'end');	if ($res->is_practice()) {
	return &mt("Closed")." " . timeToHumanString($due,'start');
	} else {
	return &mt("Was due")." " . timeToHumanString($due,'end');
	}
}	}
if (($status == $res->ANSWER_OPEN \|\| $status == $res->PARTIALLY_CORRECT)	if (($status == $res->ANSWER_OPEN \|\| $status == $res->PARTIALLY_CORRECT)
&& $res->handgrade($part) ne 'yes') {	&& $res->handgrade($part) ne 'yes') {
Line 546 sub getDescription {	Line 236 sub getDescription {
my $maxtries = $res->maxtries($part);	my $maxtries = $res->maxtries($part);
my $triesString = "";	my $triesString = "";
if ($tries && $maxtries) {	if ($tries && $maxtries) {
$triesString = "<font size=\"-1\"><i>($tries of $maxtries tries used)</i></font>";	$triesString = '<font size="-1"><i>('.&mt('[_1] of [quant,_2,try,tries] used',$tries,$maxtries).')</i></font>';
if ($maxtries > 1 && $maxtries - $tries == 1) {	if ($maxtries > 1 && $maxtries - $tries == 1) {
$triesString = "<b>$triesString</b>";	$triesString = "<b>$triesString</b>";
}	}
}	}
if ($res->duedate($part)) {	if ($due) {
return &mt("Due")." " . timeToHumanString($res->duedate($part),'end') .	return &mt("Due")." " . timeToHumanString($due,'end') .
" $triesString";	" $triesString";
} else {	} else {
return &mt("No due date")." $triesString";	return &mt("No due date")." $triesString";
Line 563 sub getDescription {	Line 253 sub getDescription {
}	}
}	}

# 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 than
# 24 hours, and still can be done?	# 24 hours, and still can be done?

sub dueInLessThan24Hours {	sub dueInLessThan24Hours {
Line 578 sub dueInLessThan24Hours {	Line 268 sub dueInLessThan24Hours {
}	}

# Convenience function, so others can use it: Is there only one try remaining for the	# Convenience function, so others can use it: Is there only one try remaining for the
# part, with more then one try to begin with, not due yet and still can be done?	# part, with more than one try to begin with, not due yet and still can be done?
sub lastTry {	sub lastTry {
my $res = shift;	my $res = shift;
my $part = shift;	my $part = shift;
Line 619 sub timeToHumanString {	Line 309 sub timeToHumanString {
}	}
my $now = time();	my $now = time();

my @time = localtime($time);
my @now = localtime($now);

# Positive = future	# Positive = future
my $delta = $time - $now;	my $delta = $time - $now;

Line 647 sub timeToHumanString {	Line 334 sub timeToHumanString {
my $tense = $inPast ? " ago" : "";	my $tense = $inPast ? " ago" : "";
my $prefix = $inPast ? "" : "in ";	my $prefix = $inPast ? "" : "in ";

# Less then a minute	# Less than a minute
if ( $delta < $minute ) {	if ( $delta < $minute ) {
if ($delta == 1) { return "${prefix}1 second$tense"; }	if ($delta == 1) { return "${prefix}1 second$tense"; }
return "$prefix$delta seconds$tense";	return "$prefix$delta seconds$tense";
}	}

# Less then an hour	# Less than an hour
if ( $delta < $hour ) {	if ( $delta < $hour ) {
# If so, use minutes	# If so, use minutes
my $minutes = floor($delta / 60);	my $minutes = floor($delta / 60);
Line 661 sub timeToHumanString {	Line 348 sub timeToHumanString {
return "$prefix$minutes minutes$tense";	return "$prefix$minutes minutes$tense";
}	}

# Is it less then 24 hours away? If so,	# Is it less than 24 hours away? If so,
# display hours + minutes	# display hours + minutes
if ( $delta < $hour * 24) {	if ( $delta < $hour * 24) {
my $hours = floor($delta / $hour);	my $hours = floor($delta / $hour);
Line 680 sub timeToHumanString {	Line 367 sub timeToHumanString {
return "$prefix$hourString$minuteString$tense";	return "$prefix$hourString$minuteString$tense";
}	}

	my $dt = DateTime->from_epoch(epoch => $time)
	->set_time_zone(&Apache::lonlocal::gettimezone());

# If there's a caller supplied format, use it.	# If there's a caller supplied format, use it.

if($format ne '') {	if ($format ne '') {
my $timeStr = strftime($format, localtime($time));	my $timeStr = $dt->strftime($format);
return $timeStr.&Apache::lonlocal::gettimezone($time);	return $timeStr.' ('.$dt->time_zone_short_name().')';
}	}

# Less then 5 days away, display day of the week and	# Less than 5 days away, display day of the week and
# HH:MM	# HH:MM

if ( $delta < $day * 5 ) {	if ( $delta < $day * 5 ) {
my $timeStr = strftime("%A, %b %e at %I:%M %P", localtime($time));	my $timeStr = $dt->strftime("%A, %b %e at %I:%M %P (%Z)");
$timeStr =~ s/12:00 am/00:00/;	$timeStr =~ s/12:00 am/00:00/;
$timeStr =~ s/12:00 pm/noon/;	$timeStr =~ s/12:00 pm/noon/;
return ($inPast ? "last " : "this ") .	return ($inPast ? "last " : "this ") .
$timeStr.&Apache::lonlocal::gettimezone($time);	$timeStr;
}	}

my $conjunction='on';	my $conjunction='on';
Line 705 sub timeToHumanString {	Line 395 sub timeToHumanString {
$conjunction='by';	$conjunction='by';
}	}
# Is it this year?	# Is it this year?
if ( $time[5] == $now[5]) {	my $dt_now = DateTime->from_epoch(epoch => $now)
	->set_time_zone(&Apache::lonlocal::gettimezone());
	if ( $dt->year() == $dt_now->year()) {
# Return on Month Day, HH:MM meridian	# Return on Month Day, HH:MM meridian
my $timeStr = strftime("$conjunction %A, %b %e at %I:%M %P", localtime($time));	my $timeStr = $dt->strftime("$conjunction %A, %b %e at %I:%M %P (%Z)");
$timeStr =~ s/12:00 am/00:00/;	$timeStr =~ s/12:00 am/00:00/;
$timeStr =~ s/12:00 pm/noon/;	$timeStr =~ s/12:00 pm/noon/;
return $timeStr.&Apache::lonlocal::gettimezone($time);	return $timeStr;
}	}

# Not this year, so show the year	# Not this year, so show the year
my $timeStr = strftime("$conjunction %A, %b %e %Y at %I:%M %P", localtime($time));	my $timeStr =
	$dt->strftime("$conjunction %A, %b %e %Y at %I:%M %P (%Z)");
$timeStr =~ s/12:00 am/00:00/;	$timeStr =~ s/12:00 am/00:00/;
$timeStr =~ s/12:00 pm/noon/;	$timeStr =~ s/12:00 pm/noon/;
return $timeStr.&Apache::lonlocal::gettimezone($time);	return $timeStr;
}	}
}	}

Line 752 to compute due to the amount of data tha	Line 445 to compute due to the amount of data tha
processed.	processed.

Apache::lonnavmaps provides an object model for manipulating this	Apache::lonnavmaps provides an object model for manipulating this
information in a higher-level fashion then directly manipulating	information in a higher-level fashion than directly manipulating
the hash. It also provides access to several auxilary functions	the hash. It also provides access to several auxilary functions
that aren't necessarily stored in the Big Hash, but are a per-	that aren't necessarily stored in the Big Hash, but are a per-
resource sort of value, like whether there is any feedback on	resource sort of value, like whether there is any feedback on
Line 798 Apache::lonnavmaps::render({}).	Line 491 Apache::lonnavmaps::render({}).
=head2 Overview of Columns	=head2 Overview of Columns

The renderer will build an HTML table for the navmap and return	The renderer will build an HTML table for the navmap and return
it. The table is consists of several columns, and a row for each	it. The table consists of several columns, and a row for each
resource (or possibly each part). You tell the renderer how many	resource (or possibly each part). You tell the renderer how many
columns to create and what to place in each column, optionally using	columns to create and what to place in each column, optionally using
one or more of the prepared columns, and the renderer will assemble	one or more of the prepared columns, and the renderer will assemble
Line 929 instruct the renderer to render only a p	Line 622 instruct the renderer to render only a p
the source of the map you want to process, like	the source of the map you want to process, like
'/res/103/jerf/navmap.course.sequence'.	'/res/103/jerf/navmap.course.sequence'.

	=item * B<include_top_level_map>: default: false

	If you need to include the top level map (meaning the course) in the
	rendered output set this to true

=item * B<navmap>: default: constructs one from %env	=item * B<navmap>: default: constructs one from %env

A reference to a navmap, used only if an iterator is not passed in. If	A reference to a navmap, used only if an iterator is not passed in. If
Line 1127 sub render_resource {	Line 825 sub render_resource {
($nowOpen ? &mt('Open Folder') : &mt('Close Folder')).' '.$title."\" border='0' />";	($nowOpen ? &mt('Open Folder') : &mt('Close Folder')).' '.$title."\" border='0' />";

$linkopen = "<a href=\"" . $params->{'url'} . '?' .	$linkopen = "<a href=\"" . $params->{'url'} . '?' .
$params->{'queryString'} . '&filter=';	$params->{'queryString'} . '&filter=';
$linkopen .= ($nowOpen xor $it->{CONDITION}) ?	$linkopen .= ($nowOpen xor $it->{CONDITION}) ?
addToFilter($filter, $mapId) :	addToFilter($filter, $mapId) :
removeFromFilter($filter, $mapId);	removeFromFilter($filter, $mapId);
$linkopen .= "&condition=" . $it->{CONDITION} . '&hereType='	$linkopen .= "&condition=" . $it->{CONDITION} . '&hereType='
. $params->{'hereType'} . '&here=' .	. $params->{'hereType'} . '&here=' .
&escape($params->{'here'}) .	&escape($params->{'here'}) .
'&jump=' .	'&jump=' .
&escape($resource->symb()) .	&escape($resource->symb()) .
"&folderManip=1\">";	"&folderManip=1\">";

} else {	} else {
# Don't allow users to manipulate folder	# Don't allow users to manipulate folder
Line 1156 sub render_resource {	Line 854 sub render_resource {
if (!$resource->condval()) {	if (!$resource->condval()) {
$nonLinkedText .= ' <i>('.&mt('conditionally hidden').')</i> ';	$nonLinkedText .= ' <i>('.&mt('conditionally hidden').')</i> ';
}	}
	if (($resource->is_practice()) && ($resource->is_raw_problem())) {
	$nonLinkedText .=' <font color="green"><b>'.&mt('not graded').'</b></font>';
	}

# We're done preparing and finally ready to start the rendering	# We're done preparing and finally ready to start the rendering
my $result = "<td align='left' valign='center'>";	my $result = "<td align='left' valign='middle'>";

my $indentLevel = $params->{'indentLevel'};	my $indentLevel = $params->{'indentLevel'};
if ($newBranchText) { $indentLevel--; }	if ($newBranchText) { $indentLevel--; }
Line 1222 sub render_communication_status {	Line 923 sub render_communication_status {
my $location=&Apache::loncommon::lonhttpdurl("/adm/lonMisc");	my $location=&Apache::loncommon::lonhttpdurl("/adm/lonMisc");
if ($resource->hasDiscussion()) {	if ($resource->hasDiscussion()) {
$discussionHTML = $linkopen .	$discussionHTML = $linkopen .
'<img border="0" src="'.$location.'/chat.gif" />' .	'<img alt="'.&mt('New Discussion').'" border="0" src="'.$location.'/chat.gif" />' .
$linkclose;	$linkclose;
}	}

if ($resource->getFeedback()) {	if ($resource->getFeedback()) {
my $feedback = $resource->getFeedback();	my $feedback = $resource->getFeedback();
foreach (split(/\,/, $feedback)) {	foreach my $msgid (split(/\,/, $feedback)) {
if ($_) {	if ($msgid) {
$feedbackHTML .= ' <a '.$target.' href="/adm/email?display='	$feedbackHTML .= ' <a '.$target.' href="/adm/email?display='
. &escape($_) . '">'	. &escape($msgid) . '">'
. '<img src="'.$location.'/feedback.gif" '	. '<img alt="'.&mt('New Email').'" src="'.$location.'/feedback.gif" '
. 'border="0" /></a>';	. 'border="0" /></a>';
}	}
}	}
Line 1241 sub render_communication_status {	Line 942 sub render_communication_status {
if ($resource->getErrors()) {	if ($resource->getErrors()) {
my $errors = $resource->getErrors();	my $errors = $resource->getErrors();
my $errorcount = 0;	my $errorcount = 0;
foreach (split(/,/, $errors)) {	foreach my $msgid (split(/,/, $errors)) {
last if ($errorcount>=10); # Only output 10 bombs maximum	last if ($errorcount>=10); # Only output 10 bombs maximum
if ($_) {	if ($msgid) {
$errorcount++;	$errorcount++;
$errorHTML .= ' <a '.$target.' href="/adm/email?display='	$errorHTML .= ' <a '.$target.' href="/adm/email?display='
. &escape($_) . '">'	. &escape($msgid) . '">'
. '<img src="'.$location.'/bomb.gif" '	. '<img alt="'.&mt('New Error').'" src="'.$location.'/bomb.gif" '
. 'border="0" /></a>';	. 'border="0" /></a>';
}	}
}	}
Line 1257 sub render_communication_status {	Line 958 sub render_communication_status {
$discussionHTML = $feedbackHTML = $errorHTML = '';	$discussionHTML = $feedbackHTML = $errorHTML = '';
}	}

return "<td width=\"75\" align=\"left\" valign=\"center\">$discussionHTML$feedbackHTML$errorHTML </td>";	return "<td width=\"75\" align=\"left\" valign=\"middle\">$discussionHTML$feedbackHTML$errorHTML </td>";

}	}
sub render_quick_status {	sub render_quick_status {
Line 1282 sub render_quick_status {	Line 983 sub render_quick_status {
if ($icon) {	if ($icon) {
my $location=	my $location=
&Apache::loncommon::lonhttpdurl("/adm/lonIcons/$icon");	&Apache::loncommon::lonhttpdurl("/adm/lonIcons/$icon");
$result .= "<td width='30' valign='center' width='50' align='right'>$linkopen<img width='25' height='25' src='$location' border='0' alt='$alt' />$linkclose</td>\n";	$result .= "<td valign='middle' width='50' align='right'>$linkopen<img width='25' height='25' src='$location' border='0' alt='$alt' />$linkclose</td>\n";
} else {	} else {
$result .= "<td width='30'> </td>\n";	$result .= "<td width='30'> </td>\n";
}	}
Line 1294 sub render_quick_status {	Line 995 sub render_quick_status {
}	}
sub render_long_status {	sub render_long_status {
my ($resource, $part, $params) = @_;	my ($resource, $part, $params) = @_;
my $result = "<td align='right' valign='center'>\n";	my $result = "<td align='right' valign='middle'>\n";
my $firstDisplayed = !$params->{'condensed'} &&	my $firstDisplayed = !$params->{'condensed'} &&
$params->{'multipart'} && $part eq "0";	$params->{'multipart'} && $part eq "0";

my $color;	my $color;
if ($resource->is_problem()) {	if ($resource->is_problem() \|\| $resource->is_practice()) {
$color = $colormap{$resource->status};	$color = $colormap{$resource->status};

if (dueInLessThan24Hours($resource, $part) \|\|	if (dueInLessThan24Hours($resource, $part) \|\|
Line 1309 sub render_long_status {	Line 1010 sub render_long_status {
}	}

if ($resource->kind() eq "res" &&	if ($resource->kind() eq "res" &&
$resource->is_problem() &&	($resource->is_problem() \|\| $resource->is_practice()) &&
!$firstDisplayed) {	!$firstDisplayed) {
if ($color) {$result .= "<font color=\"$color\"><b>"; }	if ($color) {$result .= "<font color=\"$color\"><b>"; }
$result .= getDescription($resource, $part);	$result .= getDescription($resource, $part);
if ($color) {$result .= "</b></font>"; }	if ($color) {$result .= "</b></font>"; }
}	}
if ($resource->is_map() && advancedUser() && $resource->randompick()) {	if ($resource->is_map() && &advancedUser() && $resource->randompick()) {
$result .= '(randomly select ' . $resource->randompick() .')';	$result .= &mt('(randomly select [_1])', $resource->randompick());
	}
	if ($resource->is_map() && &advancedUser() && $resource->randomorder()) {
	$result .= &mt('(randomly ordered)');
}	}

# Debugging code	# Debugging code
Line 1351 my %statusStrings =	Line 1055 my %statusStrings =
);	);
my @statuses = ($resObj->CORRECT, $resObj->ATTEMPTED, $resObj->INCORRECT, $resObj->OPEN, $resObj->CLOSED, $resObj->ERROR);	my @statuses = ($resObj->CORRECT, $resObj->ATTEMPTED, $resObj->INCORRECT, $resObj->OPEN, $resObj->CLOSED, $resObj->ERROR);

use Data::Dumper;
sub render_parts_summary_status {	sub render_parts_summary_status {
my ($resource, $part, $params) = @_;	my ($resource, $part, $params) = @_;
if (!$resource->is_problem() && !$resource->contains_problem) { return '<td></td>'; }	if (!$resource->is_problem() && !$resource->contains_problem) { return '<td></td>'; }
Line 1450 sub render {	Line 1153 sub render {
# marker	# marker
my $filterHash = {};	my $filterHash = {};
# Figure out what we're not displaying	# Figure out what we're not displaying
foreach (split(/\,/, $env{"form.filter"})) {	foreach my $item (split(/\,/, $env{"form.filter"})) {
if ($_) {	if ($item) {
$filterHash->{$_} = "1";	$filterHash->{$item} = "1";
}	}
}	}

Line 1479 sub render {	Line 1182 sub render {
if (!defined($navmap)) {	if (!defined($navmap)) {
$navmap = Apache::lonnavmaps::navmap->new();	$navmap = Apache::lonnavmaps::navmap->new();
if (!defined($navmap)) {	if (!defined($navmap)) {
# no londer in course	# no longer in course
return '<span class="LC_error">'.&mt('No course selected').'</span><br />	return '<span class="LC_error">'.&mt('No course selected').'</span><br />
<a href="/adm/roles">'.&mt('Select a course').'</a><br />';	<a href="/adm/roles">'.&mt('Select a course').'</a><br />';
}	}
Line 1547 sub render {	Line 1250 sub render {
# Step 1: Check to see if we have a navmap	# Step 1: Check to see if we have a navmap
if (!defined($navmap)) {	if (!defined($navmap)) {
$navmap = Apache::lonnavmaps::navmap->new();	$navmap = Apache::lonnavmaps::navmap->new();
	if (!defined($navmap)) {
	# no longer in course
	return '<span class="LC_error">'.&mt('No course selected').'</span><br />
	<a href="/adm/roles">'.&mt('Select a course').'</a><br />';
	}
}	}

# See if we're being passed a specific map	# See if we're being passed a specific map
Line 1558 sub render {	Line 1266 sub render {

$args->{'iterator'} = $it = $navmap->getIterator($firstResource, $finishResource, $filterHash, $condition);	$args->{'iterator'} = $it = $navmap->getIterator($firstResource, $finishResource, $filterHash, $condition);
} else {	} else {
$args->{'iterator'} = $it = $navmap->getIterator(undef, undef, $filterHash, $condition);	$args->{'iterator'} = $it = $navmap->getIterator(undef, undef, $filterHash, $condition,undef,$args->{'include_top_level_map'});
}	}
}	}

Line 1595 sub render {	Line 1303 sub render {
# Print key?	# Print key?
if ($printKey) {	if ($printKey) {
$result .= '<table border="0" cellpadding="2" cellspacing="0">';	$result .= '<table border="0" cellpadding="2" cellspacing="0">';
my $date=localtime;
$result.='<tr><td align="right" valign="bottom">Key:  </td>';	$result.='<tr><td align="right" valign="bottom">Key:  </td>';
my $location=&Apache::loncommon::lonhttpdurl("/adm/lonMisc");	my $location=&Apache::loncommon::lonhttpdurl("/adm/lonMisc");
if ($navmap->{LAST_CHECK}) {	if ($navmap->{LAST_CHECK}) {
Line 1618 sub render {	Line 1325 sub render {
if ($printCloseAll && !$args->{'resource_no_folder_link'}) {	if ($printCloseAll && !$args->{'resource_no_folder_link'}) {
my ($link,$text);	my ($link,$text);
if ($condition) {	if ($condition) {
$link='"navmaps?condition=0&filter=&'.$queryString.	$link='"navmaps?condition=0&filter=&'.$queryString.
'&here='.&escape($here).'"';	'&here='.&escape($here).'"';
$text='Close all folders';	$text='Close all folders';
} else {	} else {
$link='"navmaps?condition=1&filter=&'.$queryString.	$link='"navmaps?condition=1&filter=&'.$queryString.
'&here='.&escape($here).'"';	'&here='.&escape($here).'"';
$text='Open all folders';	$text='Open all folders';
}	}
Line 2039 ENDBLOCK	Line 1746 ENDBLOCK
$result.='}	$result.='}
</script>	</script>
<form name="linkitems" method="post">	<form name="linkitems" method="post">
<nobr><select name="toplink">'."\n";	<span class="LC_nobreak"><select name="toplink">'."\n";
foreach my $link (@linkorder) {	foreach my $link (@linkorder) {
if (defined($linkitems->{$link})) {	if (defined($linkitems->{$link})) {
if ($linkitems->{$link}{'text'} ne '') {	if ($linkitems->{$link}{'text'} ne '') {
Line 2050 ENDBLOCK	Line 1757 ENDBLOCK
}	}
$result .= '</select> <input type="button" name="chgnav"	$result .= '</select> <input type="button" name="chgnav"
value="Go" onClick="javascript:changeNavDisplay()" />	value="Go" onClick="javascript:changeNavDisplay()" />
</nobr></form></td>'."\n";	</span></form></td>'."\n";

return $result;	return $result;
}	}
Line 2126 See iterator documentation below.	Line 1833 See iterator documentation below.
use strict;	use strict;
use GDBM_File;	use GDBM_File;
use Apache::lonnet;	use Apache::lonnet;
	use LONCAPA;

sub new {	sub new {
# magic invocation to create a class instance	# magic invocation to create a class instance
Line 2225 sub generate_email_discuss_status {	Line 1933 sub generate_email_discuss_status {
my %lastread = &Apache::lonnet::dump('nohist_'.$cid.'_discuss',	my %lastread = &Apache::lonnet::dump('nohist_'.$cid.'_discuss',
$env{'user.domain'},$env{'user.name'},'lastread');	$env{'user.domain'},$env{'user.name'},'lastread');
my %lastreadtime = ();	my %lastreadtime = ();
foreach (keys %lastread) {	foreach my $key (keys %lastread) {
my $key = $_;	my $shortkey = $key;
$key =~ s/_lastread$//;	$shortkey =~ s/_lastread$//;
$lastreadtime{$key} = $lastread{$_};	$lastreadtime{$shortkey} = $lastread{$key};
}	}

my %feedback=();	my %feedback=();
Line 2238 sub generate_email_discuss_status {	Line 1946 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 $plain=	my ($sendtime,$shortsubj,$fromname,$fromdomain,$status,$fromcid,
&LONCAPA::unescape(&LONCAPA::unescape($msgid));	$symb,$error) = &Apache::lonmsg::unpackmsgid($msgid);
if ($plain=~/ \[([^\]]+)\]\:/) {	&Apache::lonenc::check_decrypt(\$symb);
my $url=$1;	if (($fromcid ne '') && ($fromcid ne $cid)) {
if ($plain=~/\:Error \[/) {	next;
$error{$url}.=','.$msgid;	}
} else {	if (defined($symb)) {
$feedback{$url}.=','.$msgid;	if (defined($error) && $error == 1) {
}	$error{$symb}.=','.$msgid;
}	} else {
	$feedback{$symb}.=','.$msgid;
	}
	} else {
	my $plain=
	&LONCAPA::unescape(&LONCAPA::unescape($msgid));
	if ($plain=~/ \[([^\]]+)\]\:/) {
	my $url=$1;
	if ($plain=~/\:Error \[/) {
	$error{$url}.=','.$msgid;
	} else {
	$feedback{$url}.=','.$msgid;
	}
	}
	}
}	}
}	}

#url's of resources that have feedbacks	#symbs of resources that have feedbacks (will be urls pre-2.3)
$self->{FEEDBACK} = \%feedback;	$self->{FEEDBACK} = \%feedback;
#or errors	#or errors (will be urls pre 2.3)
$self->{ERROR_MSG} = \%error;	$self->{ERROR_MSG} = \%error;
$self->{DISCUSSION_TIME} = \%discussiontime;	$self->{DISCUSSION_TIME} = \%discussiontime;
$self->{EMAIL_STATUS} = \%emailstatus;	$self->{EMAIL_STATUS} = \%emailstatus;
Line 2358 sub last_post_time {	Line 2080 sub last_post_time {
return $self->{DISCUSSION_TIME}->{$ressymb};	return $self->{DISCUSSION_TIME}->{$ressymb};
}	}

sub unread_discussion {	sub discussion_info {
my $self = shift;	my $self = shift;
my $symb = shift;	my $symb = shift;
	my $filter = shift;

$self->get_discussion_data();	$self->get_discussion_data();

my $ressymb = $self->wrap_symb($symb);	my $ressymb = $self->wrap_symb($symb);
# keys used to store bulletinboard postings use 'unwrapped' symb.	# keys used to store bulletinboard postings use 'unwrapped' symb.
my $discsymb = $self->unwrap_symb($ressymb);	my $discsymb = &escape($self->unwrap_symb($ressymb));
my $version = $self->{DISCUSSION_DATA}{'version:'.$discsymb};	my $version = $self->{DISCUSSION_DATA}{'version:'.$discsymb};
if (!$version) { return; }	if (!$version) { return; }

my $prevread = $self->{LAST_READ}{$ressymb};	my $prevread = $self->{LAST_READ}{$ressymb};

my $unreadcount = 0;	my $count = 0;
my $hiddenflag = 0;	my $hiddenflag = 0;
my $deletedflag = 0;	my $deletedflag = 0;
my ($hidden,$deleted);	my ($hidden,$deleted,%info);

my %subjects;

for (my $id=$version; $id>0; $id--) {	for (my $id=$version; $id>0; $id--) {
my $vkeys=$self->{DISCUSSION_DATA}{$id.':keys:'.$discsymb};	my $vkeys=$self->{DISCUSSION_DATA}{$id.':keys:'.$discsymb};
Line 2393 sub unread_discussion {	Line 2114 sub unread_discussion {
$deletedflag = 1;	$deletedflag = 1;
}	}
} else {	} else {
if (($hidden !~/\.$id\./) && ($deleted !~/\.$id\./)	if (($hidden !~/\.$id\./) && ($deleted !~/\.$id\./)) {
&& $prevread < $self->{DISCUSSION_DATA}{$id.':'.$discsymb.':timestamp'}) {	if ($filter eq 'unread') {
$unreadcount++;	if ($prevread >= $self->{DISCUSSION_DATA}{$id.':'.$discsymb.':timestamp'}) {
$subjects{$unreadcount}=	next;
$id.': '.$self->{DISCUSSION_DATA}{$id.':'.$discsymb.':subject'};	}
}	}
	$count++;
	$info{$count}{'subject'} =
	$self->{DISCUSSION_DATA}{$id.':'.$discsymb.':subject'};
	$info{$count}{'id'} = $id;
	$info{$count}{'timestamp'} = $self->{DISCUSSION_DATA}{$id.':'.$discsymb.':timestamp'};
	}
}	}
}	}
if (wantarray) {	if (wantarray) {
return ($unreadcount,\%subjects);	return ($count,%info);
}	}
return $unreadcount	return $count;
}	}

sub wrap_symb {	sub wrap_symb {
Line 2435 sub unwrap_symb {	Line 2162 sub unwrap_symb {
sub getFeedback {	sub getFeedback {
my $self = shift;	my $self = shift;
my $symb = shift;	my $symb = shift;
	my $source = shift;

$self->generate_email_discuss_status();	$self->generate_email_discuss_status();

if (!defined($self->{FEEDBACK})) { return ""; }	if (!defined($self->{FEEDBACK})) { return ""; }

return $self->{FEEDBACK}->{$symb};	my $feedback;
	if ($self->{FEEDBACK}->{$symb}) {
	$feedback = $self->{FEEDBACK}->{$symb};
	if ($self->{FEEDBACK}->{$source}) {
	$feedback .= ','.$self->{FEEDBACK}->{$source};
	}
	} else {
	if ($self->{FEEDBACK}->{$source}) {
	$feedback = $self->{FEEDBACK}->{$source};
	}
	}
	return $feedback;
}	}

# Private method: Get the errors for that resource (by source).	# Private method: Get the errors for that resource (by source).
sub getErrors {	sub getErrors {
my $self = shift;	my $self = shift;
	my $symb = shift;
my $src = shift;	my $src = shift;

$self->generate_email_discuss_status();	$self->generate_email_discuss_status();

if (!defined($self->{ERROR_MSG})) { return ""; }	if (!defined($self->{ERROR_MSG})) { return ""; }
return $self->{ERROR_MSG}->{$src};
	my $errors;
	if ($self->{ERROR_MSG}->{$symb}) {
	$errors = $self->{ERROR_MSG}->{$symb};
	if ($self->{ERROR_MSG}->{$src}) {
	$errors .= ','.$self->{ERROR_MSG}->{$src};
	}
	} else {
	if ($self->{ERROR_MSG}->{$src}) {
	$errors = $self->{ERROR_MSG}->{$src};
	}
	}
	return $errors;
}	}

=pod	=pod
Line 2477 the given map. This is one of the proper	Line 2229 the given map. This is one of the proper

# 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
# as we use them. The real point is to prevent reading any more from the tied	# as we use them. The real point is to prevent reading any more from the tied
# hash then we have to, which should hopefully alleviate speed problems.	# hash than we have to, which should hopefully alleviate speed problems.

sub getById {	sub getById {
my $self = shift;	my $self = shift;
Line 2551 sub finishResource {	Line 2303 sub finishResource {
# the actual lookup; parmval caches the results.	# the actual lookup; parmval caches the results.
sub parmval {	sub parmval {
my $self = shift;	my $self = shift;
my ($what,$symb)=@_;	my ($what,$symb,$recurse)=@_;
my $hashkey = $what."\|\|\|".$symb;	my $hashkey = $what."\|\|\|".$symb;

if (defined($self->{PARM_CACHE}->{$hashkey})) {	if (defined($self->{PARM_CACHE}->{$hashkey})) {
return $self->{PARM_CACHE}->{$hashkey};	if (ref($self->{PARM_CACHE}->{$hashkey}) eq 'ARRAY') {
	if (defined($self->{PARM_CACHE}->{$hashkey}->[0])) {
	if (wantarray) {
	return @{$self->{PARM_CACHE}->{$hashkey}};
	} else {
	return $self->{PARM_CACHE}->{$hashkey}->[0];
	}
	}
	} else {
	return $self->{PARM_CACHE}->{$hashkey};
	}
}	}
	my $result = $self->parmval_real($what, $symb, $recurse);
my $result = $self->parmval_real($what, $symb);
$self->{PARM_CACHE}->{$hashkey} = $result;	$self->{PARM_CACHE}->{$hashkey} = $result;
return $result;	if (wantarray) {
	return @{$result};
	}
	return $result->[0];
}	}

sub parmval_real {	sub parmval_real {
Line 2581 sub parmval_real {	Line 2345 sub parmval_real {
my $uname=$env{'user.name'};	my $uname=$env{'user.name'};
my $udom=$env{'user.domain'};	my $udom=$env{'user.domain'};

unless ($symb) { return ''; }	unless ($symb) { return ['']; }
my $result='';	my $result='';

my ($mapname,$id,$fn)=&Apache::lonnet::decode_symb($symb);	my ($mapname,$id,$fn)=&Apache::lonnet::decode_symb($symb);
Line 2613 sub parmval_real {	Line 2377 sub parmval_real {

# ---------------------------------------------------------- first, check user	# ---------------------------------------------------------- first, check user
if ($uname and defined($useropt)) {	if ($uname and defined($useropt)) {
if (defined($$useropt{$courselevelr})) { return $$useropt{$courselevelr}; }	if (defined($$useropt{$courselevelr})) { return [$$useropt{$courselevelr},'resource']; }
if (defined($$useropt{$courselevelm})) { return $$useropt{$courselevelm}; }	if (defined($$useropt{$courselevelm})) { return [$$useropt{$courselevelm},'map']; }
if (defined($$useropt{$courselevel})) { return $$useropt{$courselevel}; }	if (defined($$useropt{$courselevel})) { return [$$useropt{$courselevel},'course']; }
}	}

# ------------------------------------------------------- second, check course	# ------------------------------------------------------- second, check course
if ($cgroup ne '' and defined($courseopt)) {	if ($cgroup ne '' and defined($courseopt)) {
if (defined($$courseopt{$grplevelr})) { return $$courseopt{$grplevelr}; }	if (defined($$courseopt{$grplevelr})) { return [$$courseopt{$grplevelr},'resource']; }
if (defined($$courseopt{$grplevelm})) { return $$courseopt{$grplevelm}; }	if (defined($$courseopt{$grplevelm})) { return [$$courseopt{$grplevelm},'map']; }
if (defined($$courseopt{$grplevel})) { return $$courseopt{$grplevel}; }	if (defined($$courseopt{$grplevel})) { return [$$courseopt{$grplevel},'course']; }
}	}

if ($csec and defined($courseopt)) {	if ($csec and defined($courseopt)) {
if (defined($$courseopt{$seclevelr})) { return $$courseopt{$seclevelr}; }	if (defined($$courseopt{$seclevelr})) { return [$$courseopt{$seclevelr},'resource']; }
if (defined($$courseopt{$seclevelm})) { return $$courseopt{$seclevelm}; }	if (defined($$courseopt{$seclevelm})) { return [$$courseopt{$seclevelm},'map']; }
if (defined($$courseopt{$seclevel})) { return $$courseopt{$seclevel}; }	if (defined($$courseopt{$seclevel})) { return [$$courseopt{$seclevel},'course']; }
}	}

if (defined($courseopt)) {	if (defined($courseopt)) {
if (defined($$courseopt{$courselevelr})) { return $$courseopt{$courselevelr}; }	if (defined($$courseopt{$courselevelr})) { return [$$courseopt{$courselevelr},'resource']; }
}	}

# ----------------------------------------------------- third, check map parms	# ----------------------------------------------------- third, check map parms

my $thisparm=$$parmhash{$symbparm};	my $thisparm=$$parmhash{$symbparm};
if (defined($thisparm)) { return $thisparm; }	if (defined($thisparm)) { return [$thisparm,'map']; }

# ----------------------------------------------------- fourth , check default	# ----------------------------------------------------- fourth , check default

my $meta_rwhat=$rwhat;	my $meta_rwhat=$rwhat;
$meta_rwhat=~s/\./_/g;	$meta_rwhat=~s/\./_/g;
my $default=&Apache::lonnet::metadata($fn,$meta_rwhat);	my $default=&Apache::lonnet::metadata($fn,$meta_rwhat);
if (defined($default)) { return $default}	if (defined($default)) { return [$default,'resource']}
$default=&Apache::lonnet::metadata($fn,'parameter_'.$meta_rwhat);	$default=&Apache::lonnet::metadata($fn,'parameter_'.$meta_rwhat);
if (defined($default)) { return $default}	if (defined($default)) { return [$default,'resource']}

# --------------------------------------------------- fifth, check more course	# --------------------------------------------------- fifth, check more course
if (defined($courseopt)) {	if (defined($courseopt)) {
if (defined($$courseopt{$courselevelm})) { return $$courseopt{$courselevelm}; }	if (defined($$courseopt{$courselevelm})) { return [$$courseopt{$courselevelm},'map']; }
if (defined($$courseopt{$courselevel})) { return $$courseopt{$courselevel}; }	if (defined($$courseopt{$courselevel})) {
	my $ret = [$$courseopt{$courselevel},'course'];
	return $ret;
	}
}	}

# --------------------------------------------------- sixth , cascade up parts	# --------------------------------------------------- sixth , cascade up parts

my ($space,@qualifier)=split(/\./,$rwhat);	my ($space,@qualifier)=split(/\./,$rwhat);
Line 2664 sub parmval_real {	Line 2429 sub parmval_real {
my $id=pop(@parts);	my $id=pop(@parts);
my $part=join('_',@parts);	my $part=join('_',@parts);
if ($part eq '') { $part='0'; }	if ($part eq '') { $part='0'; }
my $partgeneral=$self->parmval($part.".$qualifier",$symb,1);	my @partgeneral=$self->parmval($part.".$qualifier",$symb,1);
if (defined($partgeneral)) { return $partgeneral; }	if (defined($partgeneral[0])) { return \@partgeneral; }
}	}
if ($recurse) { return undef; }	if ($recurse) { return []; }
my $pack_def=&Apache::lonnet::packages_tab_default($fn,'resource.'.$what);	my $pack_def=&Apache::lonnet::packages_tab_default($fn,'resource.'.$rwhat);
if (defined($pack_def)) { return $pack_def; }	if (defined($pack_def)) { return [$pack_def,'resource']; }
return '';	return [''];
}	}

=pod	=pod
Line 2678 sub parmval_real {	Line 2443 sub parmval_real {
=item * B<getResourceByUrl>(url,multiple):	=item * B<getResourceByUrl>(url,multiple):

Retrieves a resource object by URL of the resource, unless the optional	Retrieves a resource object by URL of the resource, unless the optional
multiple parameter is included in wahich caes an array of resource	multiple parameter is included in which case an array of resource
objects is returned. If passed a resource object, it will simply return	objects is returned. If passed a resource object, it will simply return
it, so it is safe to use this method in code like	it, so it is safe to use this method in code like
"$res = $navmap->getResourceByUrl($res)"	"$res = $navmap->getResourceByUrl($res)"
Line 2713 all matching resources.	Line 2478 all matching resources.

=item * B<hasResource>(map, filterFunc, recursive, showall):	=item * B<hasResource>(map, filterFunc, recursive, showall):

Convience method for	Convenience method for

scalar(retrieveResources($map, $filterFunc, $recursive, 1, $showall)) > 0	scalar(retrieveResources($map, $filterFunc, $recursive, 1, $showall)) > 0

Line 2791 sub retrieveResources {	Line 2556 sub retrieveResources {

my @resources = ();	my @resources = ();

	if (&$filterFunc($map)) {
	push(@resources, $map);
	}

# Run down the iterator and collect the resources.	# Run down the iterator and collect the resources.
my $curRes;	my $curRes;

Line 2800 sub retrieveResources {	Line 2569 sub retrieveResources {
next;	next;
}	}

push @resources, $curRes;	push(@resources, $curRes);

if ($bailout) {	if ($bailout) {
return @resources;	return @resources;
Line 2947 be the tokens described above.	Line 2716 be the tokens described above.

Also note there is some old code floating around that trys to track	Also note there is some old code floating around that trys 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 then	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.

=cut	=cut
Line 3131 sub next {	Line 2900 sub next {
$self->{HAVE_RETURNED_0} = 1;	$self->{HAVE_RETURNED_0} = 1;
return $self->{NAV_MAP}->getById('0.0');	return $self->{NAV_MAP}->getById('0.0');
}	}
	if ($self->{RETURN_0} && !$self->{HAVE_RETURNED_0_BEGIN_MAP}) {
	$self->{HAVE_RETURNED_0_BEGIN_MAP} = 1;
	return $self->BEGIN_MAP();
	}

if ($self->{RECURSIVE_ITERATOR_FLAG}) {	if ($self->{RECURSIVE_ITERATOR_FLAG}) {
# grab the next from the recursive iterator	# grab the next from the recursive iterator
Line 3232 sub next {	Line 3005 sub next {
}	}

# Is this the end of a branch? If so, all of the resources examined above	# Is this the end of a branch? If so, all of the resources examined above
# led to lower levels then the one we are currently at, so we push a END_BRANCH	# led to lower levels than the one we are currently at, so we push a END_BRANCH
# marker onto the stack so we don't forget.	# marker onto the stack so we don't forget.
# Example: For the usual A(BC)(DE)F case, when the iterator goes down the	# Example: For the usual A(BC)(DE)F case, when the iterator goes down the
# BC branch and gets to C, it will see F as the only next resource, but it's	# BC branch and gets to C, it will see F as the only next resource, but it's
Line 3441 sub next {	Line 3214 sub next {

# filter the next possibilities to remove things we've	# filter the next possibilities to remove things we've
# already seen.	# already seen.
foreach (@$nextUnfiltered) {	foreach my $item (@$nextUnfiltered) {
if (!defined($self->{ALREADY_SEEN}->{$_->{ID}})) {	if (!defined($self->{ALREADY_SEEN}->{$item->{ID}})) {
push @$next, $_;	push @$next, $item;
}	}
}	}

Line 3568 X<symb> X<resource, symb>	Line 3341 X<symb> X<resource, symb>
All resources also have B<symb>s, which uniquely identify a resource	All resources also have B<symb>s, which uniquely identify a resource
in a course. Many internal LON-CAPA functions expect a symb. A symb	in a course. Many internal LON-CAPA functions expect a symb. A symb
carries along with it the URL of the resource, and the map it appears	carries along with it the URL of the resource, and the map it appears
in. Symbs are much larger then resource IDs.	in. Symbs are much larger than resource IDs.

=cut	=cut

Line 3644 false.	Line 3417 false.

=item * B<randompick>:	=item * B<randompick>:

Returns true for a map if the randompick feature is being used on the	Returns the number of randomly picked items for a map if the randompick
map. (?)	feature is being used on the map.

	=item * B<randomorder>:

	Returns true for a map if the randomorder feature is being used on the
	map.

=item * B<src>:	=item * B<src>:

Line 3675 sub kind { my $self=shift; return $self-	Line 3453 sub kind { my $self=shift; return $self-
sub randomout { my $self=shift; return $self->navHash("randomout_", 1); }	sub randomout { my $self=shift; return $self->navHash("randomout_", 1); }
sub randompick {	sub randompick {
my $self = shift;	my $self = shift;
return $self->parmval('randompick');	my $randompick = $self->parmval('randompick');
	return $randompick;
	}
	sub randomorder {
	my $self = shift;
	my $randomorder = $self->parmval('randomorder');
	return ($randomorder =~ /^yes$/i);
}	}
sub link {	sub link {
my $self=shift;	my $self=shift;
Line 3753 sub compTitle {	Line 3537 sub compTitle {
}	}
return $title;	return $title;
}	}

=pod	=pod

B<Predicate Testing the Resource>	B<Predicate Testing the Resource>
Line 3795 sub retrieveResources {	Line 3580 sub retrieveResources {

sub is_exam {	sub is_exam {
my ($self,$part) = @_;	my ($self,$part) = @_;
if ($self->parmval('type',$part) eq 'exam') {	my $type = $self->parmval('type',$part);
	if ($type eq 'exam') {
return 1;	return 1;
}	}
if ($self->src() =~ /\.(exam)$/) {	if ($self->src() =~ /\.(exam)$/) {
Line 3818 sub is_page {	Line 3604 sub is_page {
sub is_practice {	sub is_practice {
my $self=shift;	my $self=shift;
my ($part) = @_;	my ($part) = @_;
if ($self->parmval('type',$part) eq 'practice') {	my $type = $self->parmval('type',$part);
	if ($type eq 'practice') {
return 1;	return 1;
}	}
return 0;	return 0;
Line 3831 sub is_problem {	Line 3618 sub is_problem {
}	}
return 0;	return 0;
}	}
	sub is_raw_problem {
	my $self=shift;
	my $src = $self->src();
	if ($src =~ /\.(problem\|exam\|quiz\|assess\|survey\|form\|library\|task)$/) {
	return 1;
	}
	return 0;
	}

sub contains_problem {	sub contains_problem {
my $self=shift;	my $self=shift;
if ($self->is_page()) {	if ($self->is_page()) {
Line 3839 sub contains_problem {	Line 3635 sub contains_problem {
}	}
return 0;	return 0;
}	}
	sub map_contains_problem {
	my $self=shift;
	if ($self->is_map()) {
	my $has_problem=
	$self->hasResource($self,sub { $_[0]->is_problem() },1);
	return $has_problem;
	}
	return 0;
	}
sub is_sequence {	sub is_sequence {
my $self=shift;	my $self=shift;
return $self->navHash("is_map_", 1) &&	return $self->navHash("is_map_", 1) &&
Line 3847 sub is_sequence {	Line 3652 sub is_sequence {
sub is_survey {	sub is_survey {
my $self = shift();	my $self = shift();
my $part = shift();	my $part = shift();
if ($self->parmval('type',$part) eq 'survey') {	my $type = $self->parmval('type',$part);
	if ($type eq 'survey') {
return 1;	return 1;
}	}
if ($self->src() =~ /\.(survey)$/) {	if ($self->src() =~ /\.(survey)$/) {
Line 3945 sub map_type {	Line 3751 sub map_type {

# These functions will be responsible for returning the CORRECT	# These functions will be responsible for returning the CORRECT
# VALUE for the parameter, no matter what. So while they may look	# VALUE for the parameter, no matter what. So while they may look
# like direct calls to parmval, they can be more then that.	# like direct calls to parmval, they can be more than that.
# So, for instance, the duedate function should use the "duedatetype"	# So, for instance, the duedate function should use the "duedatetype"
# information, rather then the resource object user.	# information, rather than the resource object user.

=pod	=pod

Line 4023 Get the weight for the problem.	Line 3829 Get the weight for the problem.

sub acc {	sub acc {
(my $self, my $part) = @_;	(my $self, my $part) = @_;
return $self->parmval("acc", $part);	my $acc = $self->parmval("acc", $part);
	return $acc;
}	}
sub answerdate {	sub answerdate {
(my $self, my $part) = @_;	(my $self, my $part) = @_;
# Handle intervals	# Handle intervals
if ($self->parmval("answerdate.type", $part) eq 'date_interval') {	my $answerdatetype = $self->parmval("answerdate.type", $part);
return $self->duedate($part) +	my $answerdate = $self->parmval("answerdate", $part);
$self->parmval("answerdate", $part);	my $duedate = $self->parmval("duedate", $part);
	if ($answerdatetype eq 'date_interval') {
	$answerdate = $duedate + $answerdate;
}	}
return $self->parmval("answerdate", $part);	return $answerdate;
}	}
sub awarded {	sub awarded {
my $self = shift; my $part = shift;	my $self = shift; my $part = shift;
Line 4044 sub awarded {	Line 3853 sub awarded {
sub duedate {	sub duedate {
(my $self, my $part) = @_;	(my $self, my $part) = @_;
my $date;	my $date;
my $interval=$self->parmval("interval", $part);	my @interval=$self->parmval("interval", $part);
my $due_date=$self->parmval("duedate", $part);	my $due_date=$self->parmval("duedate", $part);
if (defined($interval)) {	if ($interval[0] =~ /\d+/) {
my $first_access=&Apache::lonnet::get_first_access('map',$self->symb);	my $first_access=&Apache::lonnet::get_first_access($interval[1],
	$self->symb);
if (defined($first_access)) {	if (defined($first_access)) {
$interval = $first_access+$interval;	my $interval = $first_access+$interval[0];
$date = ($interval < $due_date)? $interval : $due_date;	$date = (!$due_date \|\| $interval < $due_date) ? $interval
	: $due_date;
} else {	} else {
$date = $due_date;	$date = $due_date;
}	}
Line 4061 sub duedate {	Line 3872 sub duedate {
}	}
sub handgrade {	sub handgrade {
(my $self, my $part) = @_;	(my $self, my $part) = @_;
return $self->parmval("handgrade", $part);	my @response_ids = $self->responseIds($part);
	if (@response_ids) {
	foreach my $response_id (@response_ids) {
	my $handgrade = $self->parmval("handgrade",$part.'_'.$response_id);
	if (lc($handgrade) eq 'yes') {
	return 'yes';
	}
	}
	}
	my $handgrade = $self->parmval("handgrade", $part);
	return $handgrade;
}	}
sub maxtries {	sub maxtries {
(my $self, my $part) = @_;	(my $self, my $part) = @_;
return $self->parmval("maxtries", $part);	my $maxtries = $self->parmval("maxtries", $part);
	return $maxtries;
}	}
sub opendate {	sub opendate {
(my $self, my $part) = @_;	(my $self, my $part) = @_;
if ($self->parmval("opendate.type", $part) eq 'date_interval') {	my $opendatetype = $self->parmval("opendate.type", $part);
return $self->duedate($part) -	my $opendate = $self->parmval("opendate", $part);
$self->parmval("opendate", $part);	if ($opendatetype eq 'date_interval') {
	my $duedate = $self->duedate($part);
	$opendate = $duedate - $opendate;
}	}
return $self->parmval("opendate");	return $opendate;
}	}
sub problemstatus {	sub problemstatus {
(my $self, my $part) = @_;	(my $self, my $part) = @_;
return lc $self->parmval("problemstatus", $part);	my $problemstatus = $self->parmval("problemstatus", $part);
	return lc($problemstatus);
}	}
sub sig {	sub sig {
(my $self, my $part) = @_;	(my $self, my $part) = @_;
return $self->parmval("sig", $part);	my $sig = $self->parmval("sig", $part);
	return $sig;
}	}
sub tol {	sub tol {
(my $self, my $part) = @_;	(my $self, my $part) = @_;
return $self->parmval("tol", $part);	my $tol = $self->parmval("tol", $part);
	return $tol;
}	}
sub tries {	sub tries {
my $self = shift;	my $self = shift;
my $tries = $self->queryRestoreHash('tries', shift);	my $tries = $self->queryRestoreHash('tries', shift);
if (!defined($tries)) { return '0';}	if (!defined($tries)) { return '0';}
Line 4095 sub tries {	Line 3922 sub tries {
}	}
sub type {	sub type {
(my $self, my $part) = @_;	(my $self, my $part) = @_;
return $self->parmval("type", $part);	my $type = $self->parmval("type", $part);
	return $type;
}	}
sub weight {	sub weight {
my $self = shift; my $part = shift;	my $self = shift; my $part = shift;
if (!defined($part)) { $part = '0'; }	if (!defined($part)) { $part = '0'; }
return &Apache::lonnet::EXT('resource.'.$part.'.weight',	my $weight = &Apache::lonnet::EXT('resource.'.$part.'.weight',
$self->symb(), $env{'user.domain'},	$self->symb(), $env{'user.domain'},
$env{'user.name'},	$env{'user.name'},
$env{'request.course.sec'});	$env{'request.course.sec'});
	return $weight;
}	}
sub part_display {	sub part_display {
my $self= shift(); my $partID = shift();	my $self= shift(); my $partID = shift();
Line 4159 data was not extracted when the nav map	Line 3988 data was not extracted when the nav map
Returns a false value if there hasn't been discussion otherwise returns	Returns a false value if there hasn't been discussion otherwise returns
unix timestamp of last time a discussion posting (or edit) was made.	unix timestamp of last time a discussion posting (or edit) was made.

=item * B<unread_discussion>:	=item * B<discussion_info>:

returns in scalar context the count of the number of unread discussion	optional argument is a filter (currently can be 'unread');
postings	returns in scalar context the count of the number of discussion postings.

returns in list context both the count of postings and a hash ref	returns in list context both the count of postings and a hash ref
containing the subjects of all unread postings	containing information about the postings (subject, id, timestamp) in a hash.

	Default is to return counts for all postings. However if called with a second argument set to 'unread', will return information about only unread postings.

=item * B<getFeedback>:	=item * B<getFeedback>:

Line 4174 for the resource, or the null string if	Line 4005 for the resource, or the null string if
email data was not extracted when the nav map was constructed. Usually	email data was not extracted when the nav map was constructed. Usually
used like this:	used like this:

for (split(/\,/, $res->getFeedback())) {	for my $url (split(/\,/, $res->getFeedback())) {
my $link = &escape($_);	my $link = &escape($url);
...	...

and use the link as appropriate.	and use the link as appropriate.
Line 4192 sub last_post_time {	Line 4023 sub last_post_time {
return $self->{NAV_MAP}->last_post_time($self->symb());	return $self->{NAV_MAP}->last_post_time($self->symb());
}	}

sub unread_discussion {	sub discussion_info {
my $self = shift;	my ($self,$filter) = @_;
return $self->{NAV_MAP}->unread_discussion($self->symb());	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 = $self->symb();
if ($source =~ /^\/res\//) { $source = substr $source, 5; }	if ($source =~ /^\/res\//) { $source = substr $source, 5; }
return $self->{NAV_MAP}->getFeedback($source);	return $self->{NAV_MAP}->getFeedback($symb,$source);
}	}

sub getErrors {	sub getErrors {
my $self = shift;	my $self = shift;
my $source = $self->src();	my $source = $self->src();
	my $symb = $self->symb();
if ($source =~ /^\/res\//) { $source = substr $source, 5; }	if ($source =~ /^\/res\//) { $source = substr $source, 5; }
return $self->{NAV_MAP}->getErrors($source);	return $self->{NAV_MAP}->getErrors($symb,$source);
}	}

=pod	=pod
Line 4369 sub extractParts {	Line 4202 sub extractParts {
$self->{PART_TYPE} = {};	$self->{PART_TYPE} = {};
return;	return;
}	}
foreach (split(/\,/,$metadata)) {	foreach my $entry (split(/\,/,$metadata)) {
if ($_ =~ /^(?:part\|Task)_(.*)$/) {	if ($entry =~ /^(?:part\|Task)_(.*)$/) {
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})) {
Line 4395 sub extractParts {	Line 4228 sub extractParts {


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

# Now, the unfortunate thing about this is that parts, part name, and	# Now, the unfortunate thing about this is that parts, part name, and
Line 4476 the completion information.	Line 4309 the completion information.
Idiomatic usage of these two methods would probably look something	Idiomatic usage of these two methods would probably look something
like	like

foreach ($resource->parts()) {	foreach my $part ($resource->parts()) {
my $dateStatus = $resource->getDateStatus($_);	my $dateStatus = $resource->getDateStatus($part);
my $completionStatus = $resource->getCompletionStatus($_);	my $completionStatus = $resource->getCompletionStatus($part);

or	or

my $status = $resource->status($_);	my $status = $resource->status($part);

... use it here ...	... use it here ...
}	}
Line 4773 sub status {	Line 4606 sub status {
#if ($self->{RESOURCE_ERROR}) { return NETWORK_FAILURE; }	#if ($self->{RESOURCE_ERROR}) { return NETWORK_FAILURE; }
if ($completionStatus == NETWORK_FAILURE) { return NETWORK_FAILURE; }	if ($completionStatus == NETWORK_FAILURE) { return NETWORK_FAILURE; }

my $suppressFeedback = $self->problemstatus($part) eq 'no';	my $suppressFeedback = 0;
	if (($self->problemstatus($part) eq 'no') \|\|
	($self->problemstatus($part) eq 'no_feedback_ever')) {
	$suppressFeedback = 1;
	}
# If there's an answer date and we're past it, don't	# If there's an answer date and we're past it, don't
# suppress the feedback; student should know	# suppress the feedback; student should know
if ($self->duedate($part) && $self->duedate($part) < time() &&	if ($self->duedate($part) && $self->duedate($part) < time() &&

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

Removed from v.1.389
changed lines
	Added in v.1.415.4.1