loncom/interface/lonnavmaps.pm - diff

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Diff for /loncom/interface/lonnavmaps.pm between versions 1.295 and 1.393

version 1.295, 2004/09/21 19:12:59	version 1.393, 2006/12/20 23:02:33
Line 30	Line 30
package Apache::lonnavmaps;	package Apache::lonnavmaps;

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

# symbolic constants	# symbolic constants
sub SYMB { return 1; }	sub SYMB { return 1; }
Line 53 my %statusIconMap =	Line 57 my %statusIconMap =
$resObj->CLOSED => '',	$resObj->CLOSED => '',
$resObj->OPEN => 'navmap.open.gif',	$resObj->OPEN => 'navmap.open.gif',
$resObj->CORRECT => 'navmap.correct.gif',	$resObj->CORRECT => 'navmap.correct.gif',
	$resObj->PARTIALLY_CORRECT => 'navmap.partial.gif',
$resObj->INCORRECT => 'navmap.wrong.gif',	$resObj->INCORRECT => 'navmap.wrong.gif',
$resObj->ATTEMPTED => 'navmap.ellipsis.gif',	$resObj->ATTEMPTED => 'navmap.ellipsis.gif',
$resObj->ERROR => ''	$resObj->ERROR => ''
Line 77 my %colormap =	Line 82 my %colormap =
$resObj->OPEN => '',	$resObj->OPEN => '',
$resObj->NOTHING_SET => '',	$resObj->NOTHING_SET => '',
$resObj->ATTEMPTED => '',	$resObj->ATTEMPTED => '',
$resObj->ANSWER_SUBMITTED => ''	$resObj->ANSWER_SUBMITTED => '',
	$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 then 24 hours
my $hurryUpColor = "#FF0000";	my $hurryUpColor = "#FF0000";

sub launch_win {
my ($mode,$script,$toplinkitems)=@_;
my $result;
if ($script ne 'no') {
$result.='<script type="text/javascript">';
}
$result.='function launch_navmapwin() {
newWindow=open(\'/adm/navmaps?launchExternal\',\'loncapanav\',\'width=400,height=600,scrollbars=1\');
}';
if ($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);
<script type="text/javascript">	<script type="text/javascript">
window.status='Accessing Nav Control';	window.status='Accessing Nav Control';
Line 119 window.status='Done.';	Line 103 window.status='Done.';
ENDCLOSE	ENDCLOSE
}	}

sub nav_control_js {
my $nav=($ENV{'environment.remotenavmap'} eq 'on');
return (<<NAVCONTROL);
var w_loncapanav_flag="$nav";


function gonav(url) {
if (w_loncapanav_flag != 1) {
gopost(url,'');
} else {
navwindow=window.open(url,
"loncapanav","height=600,width=400,scrollbars=1");
}
}
NAVCONTROL
}

sub update {	sub update {
if ($ENV{'environment.remotenavmap'} ne 'on') { return ''; }	if ($env{'environment.remotenavmap'} ne 'on') { return ''; }
if (!$ENV{'request.course.id'}) { return ''; }	if (!$env{'request.course.id'}) { return ''; }
if ($ENV{'REQUEST_URI'}=~m\|^/adm/navmaps\|) { return ''; }	if ($ENV{'REQUEST_URI'}=~m\|^/adm/navmaps\|) { return ''; }
return(<<ENDUPDATE);	return(<<ENDUPDATE);
<form name="navform"></form>	<form name="navform"></form>
Line 150 this.document.navform.submit();	Line 117 this.document.navform.submit();
ENDUPDATE	ENDUPDATE
}	}

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

sub real_handler {
my $r = shift;

# 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);
$r->send_http_header;

my %toplinkitems=();

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->print(<<"ENDSUBM");
<html>
<head>
<script type="text/javascript">
function submitthis() {
$menu
self.close();
}

</script>
</head>
<body bgcolor="#FFFFFF" onLoad="submitthis()"></body>
</html>
ENDSUBM
return;
}
if ($ENV{QUERY_STRING} eq 'launchExternal') {
&Apache::lonnet::put('environment',{'remotenavmap' => 'on'});
&Apache::lonnet::appenv('environment.remotenavmap' => 'on');
}

# 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->print("<html><head>\n");
$r->print("<title>".&mt('Navigate Course Contents')."</title>");
# ------------------------------------------------------------ Get query string
&Apache::loncommon::get_unprocessed_cgi($ENV{'QUERY_STRING'},['register','sort','showOnlyHomework']);

# ----------------------------------------------------- Force menu registration
my $addentries='';
my $more_unload;
my $body_only='';
if ($ENV{'environment.remotenavmap'} eq 'on') {
$r->print('<script type="text/javascript">
function collapse() {
this.document.location="/adm/navmaps?collapseExternal";
}
</script>');
# FIXME need to be smarter to only catch window close events
# $more_unload="collapse()"
$body_only=1;
}
if ($ENV{'form.register'}) {
$addentries=' onLoad="'.&Apache::lonmenu::loadevents().
'" onUnload="'.&Apache::lonmenu::unloadevents().';'.
$more_unload.'"';
$r->print(&Apache::lonmenu::registerurl(1));
} else {
$addentries=' onUnload="'.$more_unload.'"';
}

# Header
$r->print('</head>'.
&Apache::loncommon::bodytag('Navigate Course Contents','',
$addentries,$body_only,'',
$ENV{'form.register'}));
$r->print('<script>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('<font size="+2" color="red">Coursemap undefined.</font>' .
'</body></html>');
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=return%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");
}

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

while (($curRes = $iterator->next()) && !$foundDoableProblem) {
if (ref($curRes) && $curRes->is_problem()) {
my $status = $curRes->status();
if ($curRes->completable()) {
$problemRes = $curRes;
$foundDoableProblem = 1;

# 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();
}
}
}

# 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 Me My First Homework 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() \|\| $res->is_map();
};
&add_linkitem(\%toplinkitems,'everything',
'location.href="locatnavmaps?sort='.$ENV{'form.sort'}.'"',
"Show Everything");
$r->print("<p><font size='+2'>".&mt("Uncompleted Homework")."</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 Homework");
}

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>
</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);
$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'>".&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>");
}
}

$r->print("</body></html>");
$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 450 sub removeFromFilter {	Line 140 sub removeFromFilter {

# Convenience function: Given a stack returned from getStack on the iterator,	# Convenience function: Given a stack returned from getStack on the iterator,
# return the correct src() value.	# return the correct src() value.
# Later, this should add an anchor when we start putting anchors in pages.
sub getLinkForResource {	sub getLinkForResource {
my $stack = shift;	my $stack = shift;
my $res;	my $res;
Line 458 sub getLinkForResource {	Line 147 sub getLinkForResource {
# Check to see if there are any pages in the stack	# Check to see if there are any pages in the stack
foreach $res (@$stack) {	foreach $res (@$stack) {
if (defined($res)) {	if (defined($res)) {
	my $anchor;
if ($res->is_page()) {	if ($res->is_page()) {
return $res->src();	foreach (@$stack) { if (defined($_)) { $anchor = $_; } }
	$anchor=&escape($anchor->shown_symb());
	return ($res->link(),$res->shown_symb(),$anchor);
}	}
# in case folder was skipped over as "only sequence"	# in case folder was skipped over as "only sequence"
my ($map,$id,$src)=&Apache::lonnet::decode_symb($res->symb());	my ($map,$id,$src)=&Apache::lonnet::decode_symb($res->symb());
if ($map=~/\.page$/) {	if ($map=~/\.page$/) {
return &Apache::lonnet::clutter($map).'#'.	my $url=&Apache::lonnet::clutter($map);
&Apache::lonnet::escape(&Apache::lonnet::declutter($src));	$anchor=&escape($src->shown_symb());
	return ($url,$res->shown_symb(),$anchor);
}	}
}	}
}	}
Line 478 sub getLinkForResource {	Line 171 sub getLinkForResource {
if (defined($_)) { $res = $_; }	if (defined($_)) { $res = $_; }
}	}

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

# Convenience function: This separates the logic of how to create	# Convenience function: This separates the logic of how to create
Line 499 sub getDescription {	Line 192 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($part));	return "Open " . timeToHumanString($res->opendate($part),'start');
}	}
if ($status == $res->OPEN) {	if ($status == $res->OPEN) {
if ($res->duedate($part)) {	if ($res->duedate($part)) {
return &mt("Due")." " .timeToHumanString($res->duedate($part));	return &mt("Due")." " .timeToHumanString($res->duedate($part),'end');
} else {	} else {
return &mt("Open, no due date");	return &mt("Open, no due date");
}	}
}	}
if ($status == $res->PAST_DUE_ANSWER_LATER) {	if ($status == $res->PAST_DUE_ANSWER_LATER) {
return &mt("Answer open")." " . timeToHumanString($res->answerdate($part));	return &mt("Answer open")." " . timeToHumanString($res->answerdate($part),'start');
}	}
if ($status == $res->PAST_DUE_NO_ANSWER) {	if ($status == $res->PAST_DUE_NO_ANSWER) {
return &mt("Was due")." " . timeToHumanString($res->duedate($part));	return &mt("Was due")." " . timeToHumanString($res->duedate($part),'end');
}	}
if ($status == $res->ANSWER_OPEN) {	if (($status == $res->ANSWER_OPEN \|\| $status == $res->PARTIALLY_CORRECT)
	&& $res->handgrade($part) ne 'yes') {
return &mt("Answer available");	return &mt("Answer available");
}	}
if ($status == $res->EXCUSED) {	if ($status == $res->EXCUSED) {
Line 534 sub getDescription {	Line 228 sub getDescription {
}	}
}	}
if ($res->duedate($part)) {	if ($res->duedate($part)) {
return &mt("Due")." " . timeToHumanString($res->duedate($part)) .	return &mt("Due")." " . timeToHumanString($res->duedate($part),'end') .
" $triesString";	" $triesString";
} else {	} else {
return &mt("No due date")." $triesString";	return &mt("No due date")." $triesString";
Line 572 sub lastTry {	Line 266 sub lastTry {
$res->duedate($part) > time();	$res->duedate($part) > time();
}	}

# This puts a human-readable name on the ENV variable.	# This puts a human-readable name on the env variable.

sub advancedUser {	sub advancedUser {
return $ENV{'request.role.adv'};	return $env{'request.role.adv'};
}	}


Line 587 sub advancedUser {	Line 281 sub advancedUser {
# print "Answer available $timestring"	# print "Answer available $timestring"
# Very, very, very, VERY English-only... goodness help a localizer on	# Very, very, very, VERY English-only... goodness help a localizer on
# this func...	# this func...


sub timeToHumanString {	sub timeToHumanString {
my ($time) = @_;	my ($time,$type,$format) = @_;

# zero, '0' and blank are bad times	# zero, '0' and blank are bad times
if (!$time) {	if (!$time) {
return &mt('never');	return &mt('never');
Line 659 sub timeToHumanString {	Line 356 sub timeToHumanString {
return "$prefix$hourString$minuteString$tense";	return "$prefix$hourString$minuteString$tense";
}	}

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

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

# Less then 5 days away, display day of the week and	# Less then 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 $timeStr = strftime("%A, %b %e at %I:%M %P", localtime($time));
$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 " : "next ") .	return ($inPast ? "last " : "this ") .
$timeStr;	$timeStr.&Apache::lonlocal::gettimezone($time);
}	}

	my $conjunction='on';
	if ($type eq 'start') {
	$conjunction='at';
	} elsif ($type eq 'end') {
	$conjunction='by';
	}
# Is it this year?	# Is it this year?
if ( $time[5] == $now[5]) {	if ( $time[5] == $now[5]) {
# Return on Month Day, HH:MM meridian	# Return on Month Day, HH:MM meridian
my $timeStr = strftime("on %A, %b %e at %I:%M %P", localtime($time));	my $timeStr = strftime("$conjunction %A, %b %e at %I:%M %P", localtime($time));
$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;	return $timeStr.&Apache::lonlocal::gettimezone($time);
}	}

# Not this year, so show the year	# Not this year, so show the year
my $timeStr = strftime("on %A, %b %e %Y at %I:%M %P", localtime($time));	my $timeStr = strftime("$conjunction %A, %b %e %Y at %I:%M %P", localtime($time));
$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;	return $timeStr.&Apache::lonlocal::gettimezone($time);
}	}
}	}

Line 878 automatically.	Line 589 automatically.

=over 4	=over 4

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

A reference to a fresh ::iterator to use from the navmaps. The	A reference to a fresh ::iterator to use from the navmaps. The
rendering will reflect the options passed to the iterator, so you can	rendering will reflect the options passed to the iterator, so you can
use that to just render a certain part of the course, if you like. If	use that to just render a certain part of the course, if you like. If
one is not passed, the renderer will attempt to construct one from	one is not passed, the renderer will attempt to construct one from
ENV{'form.filter'} and ENV{'form.condition'} information, plus the	env{'form.filter'} and env{'form.condition'} information, plus the
'iterator_map' parameter if any.	'iterator_map' parameter if any.

=item * B<iterator_map>: default: not used	=item * B<iterator_map>: default: not used
Line 894 instruct the renderer to render only a p	Line 605 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<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
this is necessary to make an iterator but it is not passed in, a new	this is necessary to make an iterator but it is not passed in, a new
one will be constructed based on ENV info. This is useful to do basic	one will be constructed based on env info. This is useful to do basic
error checking before passing it off to render.	error checking before passing it off to render.

=item * B<r>: default: must be passed in	=item * B<r>: default: must be passed in
Line 924 then only one line will be displayed for	Line 635 then only one line will be displayed for
all parts will always be displayed. If showParts is 0, this is	all parts will always be displayed. If showParts is 0, this is
ignored.	ignored.

=item * B<jumpCount>: default: determined from %ENV	=item * B<jumpCount>: default: determined from %env

A string identifying the URL to place the anchor 'curloc' at.	A string identifying the URL to place the anchor 'curloc' at.
It is the responsibility of the renderer user to	It is the responsibility of the renderer user to
ensure that the #curloc is in the URL. By default, determined through	ensure that the #curloc is in the URL. By default, determined through
the use of the ENV{} 'jump' information, and should normally "just	the use of the env{} 'jump' information, and should normally "just
work" correctly.	work" correctly.

=item * B<here>: default: empty string	=item * B<here>: default: empty string
Line 957 are allowing the user to open and close	Line 668 are allowing the user to open and close

Describes the currently-open row number to cause the browser to jump	Describes the currently-open row number to cause the browser to jump
to, because the user just opened that folder. By default, pulled from	to, because the user just opened that folder. By default, pulled from
the Jump information in the ENV{'form.*'}.	the Jump information in the env{'form.*'}.

=item * B<printKey>: default: false	=item * B<printKey>: default: false

Line 1026 sub render_resource {	Line 737 sub render_resource {
my $nonLinkedText = ''; # stuff after resource title not in link	my $nonLinkedText = ''; # stuff after resource title not in link

my $link = $params->{"resourceLink"};	my $link = $params->{"resourceLink"};

	# The URL part is not escaped at this point, but the symb is...
	# The stuff to the left of the ? must have ' replaced by \' since
	# it will be quoted with ' in the href.

	my ($left,$right) = split(/\?/, $link);
	$link = $left.'?'.$right;

my $src = $resource->src();	my $src = $resource->src();
my $it = $params->{"iterator"};	my $it = $params->{"iterator"};
my $filter = $it->{FILTER};	my $filter = $it->{FILTER};
Line 1034 sub render_resource {	Line 753 sub render_resource {

my $partLabel = "";	my $partLabel = "";
my $newBranchText = "";	my $newBranchText = "";
	my $location=&Apache::loncommon::lonhttpdurl("/adm/lonIcons");
# If this is a new branch, label it so	# If this is a new branch, label it so
if ($params->{'isNewBranch'}) {	if ($params->{'isNewBranch'}) {
$newBranchText = "<img src='/adm/lonIcons/branch.gif' border='0' />";	$newBranchText = "<img src='$location/branch.gif' border='0' alt='Branch' />";
}	}

# links to open and close the folder	# links to open and close the folder
my $linkopen = "<a href='$link'>";

	my $linkopen = "<a href=\"$link\">";


my $linkclose = "</a>";	my $linkclose = "</a>";

# Default icon: unknown page	# Default icon: unknown page
my $icon = "<img src='/adm/lonIcons/unknown.gif' alt='' border='0' />";	my $icon = "<img src='$location/unknown.gif' alt='' border='0' alt='  ' ' />";

if ($resource->is_problem()) {	if ($resource->is_problem()) {
if ($part eq '0' \|\| $params->{'condensed'}) {	if ($part eq '0' \|\| $params->{'condensed'}) {
$icon = '<img src="/adm/lonIcons/problem.gif" alt="" border="0" />';	$icon = '<img src="'.$location.'/';
	if ($resource->is_task()) {
	$icon .= 'task.gif" alt="'.&mt('Task');
	} else {
	$icon .= 'problem.gif" alt="'.&mt('Problem');
	}
	$icon .='" border="0" />';
} else {	} else {
$icon = $params->{'indentString'};	$icon = $params->{'indentString'};
}	}
} else {	} else {
$icon = "<img src='".&Apache::loncommon::icon($resource->src).	$icon = "<img src='".&Apache::loncommon::icon($resource->src)."' alt='  ' border='0' />";
"' alt='' border='0' />";
}	}

# Display the correct map icon to open or shut map	# Display the correct map icon to open or shut map
Line 1067 sub render_resource {	Line 795 sub render_resource {
}	}

my $folderType = $resource->is_sequence() ? 'folder' : 'page';	my $folderType = $resource->is_sequence() ? 'folder' : 'page';
	my $title=$resource->title;
	$title=~s/\"/\"/g;
if (!$params->{'resource_no_folder_link'}) {	if (!$params->{'resource_no_folder_link'}) {
$icon = "navmap.$folderType." . ($nowOpen ? 'closed' : 'open') . '.gif';	$icon = "navmap.$folderType." . ($nowOpen ? 'closed' : 'open') . '.gif';
$icon = "<img src='/adm/lonIcons/$icon' alt='' border='0' />";	$icon = "<img src='$location/$icon' alt=\"".
	($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=' .	. $params->{'hereType'} . '&here=' .
&Apache::lonnet::escape($params->{'here'}) .	&escape($params->{'here'}) .
'&jump=' .	'&jump=' .
&Apache::lonnet::escape($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
$icon = "navmap.$folderType." . ($nowOpen ? 'closed' : 'open') .	$icon = "navmap.$folderType." . ($nowOpen ? 'closed' : 'open') .
'.nomanip.gif';	'.nomanip.gif';
$icon = "<img src='/adm/lonIcons/$icon' alt='' border='0' />";	$icon = "<img src='$location/$icon' alt=\"".
	($nowOpen ? &mt('Open Folder') : &mt('Close Folder')).' '.$title."\" border='0' />";

$linkopen = "";	$linkopen = "";
$linkclose = "";	$linkclose = "";
Line 1095 sub render_resource {	Line 827 sub render_resource {
}	}

if ($resource->randomout()) {	if ($resource->randomout()) {
$nonLinkedText .= ' <i>(hidden)</i> ';	$nonLinkedText .= ' <i>('.&mt('hidden').')</i> ';
	}
	if (!$resource->condval()) {
	$nonLinkedText .= ' <i>('.&mt('conditionally hidden').')</i> ';
}	}

# 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 1110 sub render_resource {	Line 845 sub render_resource {
}	}

# Decide what to display	# Decide what to display

$result .= "$newBranchText$linkopen$icon$linkclose";	$result .= "$newBranchText$linkopen$icon$linkclose";

my $curMarkerBegin = '';	my $curMarkerBegin = '';
Line 1118 sub render_resource {	Line 854 sub render_resource {
# Is this the current resource?	# Is this the current resource?
if (!$params->{'displayedHereMarker'} &&	if (!$params->{'displayedHereMarker'} &&
$resource->symb() eq $params->{'here'} ) {	$resource->symb() eq $params->{'here'} ) {
$curMarkerBegin = '<font color="red" size="+2">> </font>';	$curMarkerBegin = '<font color="red" size="+2">></font>';
$curMarkerEnd = '<font color="red" size="+2"><</font>';	$curMarkerEnd = '<font color="red" size="+2"><</font>';
$params->{'displayedHereMarker'} = 1;	$params->{'displayedHereMarker'} = 1;
}	}
Line 1126 sub render_resource {	Line 862 sub render_resource {
if ($resource->is_problem() && $part ne '0' &&	if ($resource->is_problem() && $part ne '0' &&
!$params->{'condensed'}) {	!$params->{'condensed'}) {
my $displaypart=$resource->part_display($part);	my $displaypart=$resource->part_display($part);
$partLabel = " (Part: $displaypart)";	$partLabel = " (".&mt('Part: [_1]', $displaypart).")";
$link.='#'.&Apache::lonnet::escape($part);	if ($link!~/\#/) { $link.='#'.&escape($part); }
$title = "";	$title = "";
}	}

if ($params->{'condensed'} && $resource->countParts() > 1) {	if ($params->{'condensed'} && $resource->countParts() > 1) {
$nonLinkedText .= ' (' . $resource->countParts() . ' parts)';	$nonLinkedText .= ' ('.&mt('[_1] parts', $resource->countParts()).')';
}	}

my $target;	my $target;
if ($ENV{'environment.remotenavmap'} eq 'on') {	if ($env{'environment.remotenavmap'} eq 'on') {
$target=' target="loncapaclient" ';	$target=' target="loncapaclient" ';
}	}
if (!$params->{'resource_nolink'} && !$resource->is_sequence() && !$resource->is_empty_sequence) {	if (!$params->{'resource_nolink'} && !$resource->is_sequence() && !$resource->is_empty_sequence) {
$result .= " $curMarkerBegin<a $target href='$link'>$title$partLabel</a>$curMarkerEnd $nonLinkedText</td>";	$result .= " $curMarkerBegin<a $target href=\"$link\">$title$partLabel</a>$curMarkerEnd $nonLinkedText</td>";
} else {	} else {
$result .= " $curMarkerBegin$title$partLabel$curMarkerEnd $nonLinkedText</td>";	$result .= " $curMarkerBegin$title$partLabel$curMarkerEnd $nonLinkedText</td>";
}	}
Line 1153 sub render_communication_status {	Line 889 sub render_communication_status {
my $discussionHTML = ""; my $feedbackHTML = ""; my $errorHTML = "";	my $discussionHTML = ""; my $feedbackHTML = ""; my $errorHTML = "";

my $link = $params->{"resourceLink"};	my $link = $params->{"resourceLink"};
my $linkopen = "<a href='$link'>";	my $target;
	if ($env{'environment.remotenavmap'} eq 'on') {
	$target=' target="loncapaclient" ';
	}
	my $linkopen = "<a $target href=\"$link\">";
my $linkclose = "</a>";	my $linkclose = "</a>";
	my $location=&Apache::loncommon::lonhttpdurl("/adm/lonMisc");
if ($resource->hasDiscussion()) {	if ($resource->hasDiscussion()) {
$discussionHTML = $linkopen .	$discussionHTML = $linkopen .
'<img border="0" src="/adm/lonMisc/chat.gif" />' .	'<img alt="'.&mt('New Discussion').'" border="0" src="'.$location.'/chat.gif" />' .
$linkclose;	$linkclose;
}	}

Line 1166 sub render_communication_status {	Line 906 sub render_communication_status {
my $feedback = $resource->getFeedback();	my $feedback = $resource->getFeedback();
foreach (split(/\,/, $feedback)) {	foreach (split(/\,/, $feedback)) {
if ($_) {	if ($_) {
$feedbackHTML .= ' <a href="/adm/email?display='	$feedbackHTML .= ' <a '.$target.' href="/adm/email?display='
. &Apache::lonnet::escape($_) . '">'	. &escape($_) . '">'
. '<img src="/adm/lonMisc/feedback.gif" '	. '<img alt="'.&mt('New Email').'" src="'.$location.'/feedback.gif" '
. 'border="0" /></a>';	. 'border="0" /></a>';
}	}
}	}
Line 1181 sub render_communication_status {	Line 921 sub render_communication_status {
last if ($errorcount>=10); # Only output 10 bombs maximum	last if ($errorcount>=10); # Only output 10 bombs maximum
if ($_) {	if ($_) {
$errorcount++;	$errorcount++;
$errorHTML .= ' <a href="/adm/email?display='	$errorHTML .= ' <a '.$target.' href="/adm/email?display='
. &Apache::lonnet::escape($_) . '">'	. &escape($_) . '">'
. '<img src="/adm/lonMisc/bomb.gif" '	. '<img alt="'.&mt('New Error').'" src="'.$location.'/bomb.gif" '
. 'border="0" /></a>';	. 'border="0" /></a>';
}	}
}	}
Line 1193 sub render_communication_status {	Line 933 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 1203 sub render_quick_status {	Line 943 sub render_quick_status {
$params->{'multipart'} && $part eq "0";	$params->{'multipart'} && $part eq "0";

my $link = $params->{"resourceLink"};	my $link = $params->{"resourceLink"};
my $linkopen = "<a href='$link'>";	my $target;
	if ($env{'environment.remotenavmap'} eq 'on') {
	$target=' target="loncapaclient" ';
	}
	my $linkopen = "<a $target href=\"$link\">";
my $linkclose = "</a>";	my $linkclose = "</a>";

if ($resource->is_problem() &&	if ($resource->is_problem() &&
Line 1212 sub render_quick_status {	Line 956 sub render_quick_status {
my $icon = $statusIconMap{$resource->simpleStatus($part)};	my $icon = $statusIconMap{$resource->simpleStatus($part)};
my $alt = $iconAltTags{$icon};	my $alt = $iconAltTags{$icon};
if ($icon) {	if ($icon) {
$result .= "<td width='30' valign='center' width='50' align='right'>$linkopen<img width='25' height='25' src='/adm/lonIcons/$icon' border='0' alt='$alt' />$linkclose</td>\n";	my $location=
	&Apache::loncommon::lonhttpdurl("/adm/lonIcons/$icon");
	$result .= "<td valign='middle' width='50' align='right'>$linkopen<img width='25' height='25' src='$location' border='0' alt='$alt' />$linkclose</td>\n";
} else {	} else {
$result .= "<td width='30'> </td>\n";	$result .= "<td width='30'> </td>\n";
}	}
Line 1224 sub render_quick_status {	Line 970 sub render_quick_status {
}	}
sub render_long_status {	sub render_long_status {
my ($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";

Line 1343 sub setDefault {	Line 1089 sub setDefault {
return $val;	return $val;
}	}

	sub cmp_title {
	my ($atitle,$btitle) = (lc($_[0]->compTitle),lc($_[1]->compTitle));
	$atitle=~s/^\s*//;
	$btitle=~s/^\s*//;
	return $atitle cmp $btitle;
	}

sub render {	sub render {
my $args = shift;	my $args = shift;
&Apache::loncommon::get_unprocessed_cgi($ENV{QUERY_STRING});	&Apache::loncommon::get_unprocessed_cgi($ENV{QUERY_STRING});
my $result = '';	my $result = '';

# Configure the renderer.	# Configure the renderer.
my $cols = $args->{'cols'};	my $cols = $args->{'cols'};
if (!defined($cols)) {	if (!defined($cols)) {
# no columns, no nav maps.	# no columns, no nav maps.
return '';	return '';
}	}
my $mustCloseNavMap = 0;
my $navmap;	my $navmap;
if (defined($args->{'navmap'})) {	if (defined($args->{'navmap'})) {
$navmap = $args->{'navmap'};	$navmap = $args->{'navmap'};
Line 1375 sub render {	Line 1126 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 (split(/\,/, $env{"form.filter"})) {
if ($_) {	if ($_) {
$filterHash->{$_} = "1";	$filterHash->{$_} = "1";
}	}
Line 1395 sub render {	Line 1146 sub render {
}	}

my $condition = 0;	my $condition = 0;
if ($ENV{'form.condition'}) {	if ($env{'form.condition'}) {
$condition = 1;	$condition = 1;
}	}

if (!$ENV{'form.folderManip'} && !defined($args->{'iterator'})) {	if (!$env{'form.folderManip'} && !defined($args->{'iterator'})) {
# 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();
$mustCloseNavMap = 1;	if (!defined($navmap)) {
}	# no londer in course
	return '<span class="LC_error">'.&mt('No course selected').'</span><br />
	<a href="/adm/roles">'.&mt('Select a course').'</a><br />';
	}
	}

# Step two: Locate what kind of here marker is necessary	# Step two: Locate what kind of here marker is necessary
# Determine where the "here" marker is and where the screen jumps to.	# Determine where the "here" marker is and where the screen jumps to.

if ($ENV{'form.postsymb'}) {	if ($env{'form.postsymb'} ne '') {
$here = $jump = $ENV{'form.postsymb'};	$here = $jump = &Apache::lonnet::symbclean($env{'form.postsymb'});
} elsif ($ENV{'form.postdata'}) {	} elsif ($env{'form.postdata'} ne '') {
# couldn't find a symb, is there a URL?	# couldn't find a symb, is there a URL?
my $currenturl = $ENV{'form.postdata'};	my $currenturl = $env{'form.postdata'};
#$currenturl=~s/^http\:\/\///;	#$currenturl=~s/^http\:\/\///;
#$currenturl=~s/^[^\/]+//;	#$currenturl=~s/^[^\/]+//;

$here = $jump = &Apache::lonnet::symbread($currenturl);	$here = $jump = &Apache::lonnet::symbread($currenturl);
}	}
	if ($here eq '') {
	my $last;
	if (tie(my %hash,'GDBM_File',$env{'request.course.fn'}.'_symb.db',
	&GDBM_READER(),0640)) {
	$last=$hash{'last_known'};
	untie(%hash);
	}
	if ($last) { $here = $jump = $last; }
	}

# Step three: Ensure the folders are open	# Step three: Ensure the folders are open
my $mapIterator = $navmap->getIterator(undef, undef, undef, 1);	my $mapIterator = $navmap->getIterator(undef, undef, undef, 1);
Line 1445 sub render {	Line 1209 sub render {
}	}
}	}

if ( !defined($args->{'iterator'}) && $ENV{'form.folderManip'} ) { # we came from a user's manipulation of the nav page	if ( !defined($args->{'iterator'}) && $env{'form.folderManip'} ) { # we came from a user's manipulation of the nav page
# If this is a click on a folder or something, we want to preserve the "here"	# If this is a click on a folder or something, we want to preserve the "here"
# from the querystring, and get the new "jump" marker	# from the querystring, and get the new "jump" marker
$here = $ENV{'form.here'};	$here = $env{'form.here'};
$jump = $ENV{'form.jump'};	$jump = $env{'form.jump'};
}	}

my $it = $args->{'iterator'};	my $it = $args->{'iterator'};
if (!defined($it)) {	if (!defined($it)) {
# Construct a default iterator based on $ENV{'form.'} information	# Construct a default iterator based on $env{'form.'} information

# 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();
$mustCloseNavMap = 1;
}	}

# See if we're being passed a specific map	# See if we're being passed a specific map
Line 1504 sub render {	Line 1267 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; }

# 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;	my $date=localtime;
$result.='<tr><td align="right" valign="bottom">Key:  </td>';	$result.='<tr><td align="right" valign="bottom">Key:  </td>';
	my $location=&Apache::loncommon::lonhttpdurl("/adm/lonMisc");
if ($navmap->{LAST_CHECK}) {	if ($navmap->{LAST_CHECK}) {
$result .=	$result .=
'<img src="/adm/lonMisc/chat.gif"> '.&mt('New discussion since').' '.	'<img src="'.$location.'/chat.gif"> '.&mt('New discussion since').' '.
strftime("%A, %b %e at %I:%M %P", localtime($navmap->{LAST_CHECK})).	strftime("%A, %b %e at %I:%M %P", localtime($navmap->{LAST_CHECK})).
'</td><td align="center" valign="bottom">  '.	'</td><td align="center" valign="bottom">  '.
'<img src="/adm/lonMisc/feedback.gif"> '.&mt('New message (click to open)').'<p>'.	'<img src="'.$location.'/feedback.gif"> '.&mt('New message (click to open)').'<p>'.
'</td>';	'</td>';
} else {	} else {
$result .= '<td align="center" valign="bottom">  '.	$result .= '<td align="center" valign="bottom">  '.
'<img src="/adm/lonMisc/chat.gif"> '.&mt('Discussions').'</td><td align="center" valign="bottom">'.	'<img src="'.$location.'/chat.gif"> '.&mt('Discussions').'</td><td align="center" valign="bottom">'.
'  <img src="/adm/lonMisc/feedback.gif"> '.&mt('New message (click to open)').	'  <img src="'.$location.'/feedback.gif"> '.&mt('New message (click to open)').
'</td>';	'</td>';
}	}

Line 1530 sub render {	Line 1294 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='.&Apache::lonnet::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='.&Apache::lonnet::escape($here).'"';	'&here='.&escape($here).'"';
$text='Open All Folders';	$text='Open all folders';
}	}
if ($args->{'caller'} eq 'navmapsdisplay') {	if ($args->{'caller'} eq 'navmapsdisplay') {
&add_linkitem($args->{'linkitems'},'changefolder',	&add_linkitem($args->{'linkitems'},'changefolder',
Line 1549 sub render {	Line 1313 sub render {

# Check for any unread discussions in all resources.	# Check for any unread discussions in all resources.
if ($args->{'caller'} eq 'navmapsdisplay') {	if ($args->{'caller'} eq 'navmapsdisplay') {
my $totdisc = 0;	&add_linkitem($args->{'linkitems'},'clearbubbles',
my $haveDisc = '';	'document.clearbubbles.submit()',
my @allres=$navmap->retrieveResources();	'Mark all posts read');
foreach my $resource (@allres) {	my $time=time;
if ($resource->hasDiscussion()) {	$result .= (<<END);
my $ressymb;	<form name="clearbubbles" method="post" action="/adm/feedback">
if ($resource->symb() =~ m-(___adm/\w+/\w+)/(\d+)/bulletinboard$-) {	<input type="hidden" name="navurl" value="$ENV{'QUERY_STRING'}" />
$ressymb = 'bulletin___'.$2.$1.'/'.$2.'/bulletinboard';	<input type="hidden" name="navtime" value="$time" />
} else {	END
$ressymb = $resource->symb();	if ($args->{'sort'} eq 'discussion') {
	my $totdisc = 0;
	my $haveDisc = '';
	my @allres=$navmap->retrieveResources();
	foreach my $resource (@allres) {
	if ($resource->hasDiscussion()) {
	$haveDisc .= $resource->wrap_symb().':';
	$totdisc ++;
}	}
$haveDisc .= $ressymb.':';
$totdisc ++;
}	}
}	if ($totdisc > 0) {
if ($totdisc > 0) {	$haveDisc =~ s/:$//;
$haveDisc =~ s/:$//;	$result .= (<<END);
my $navurl = $ENV{'QUERY_STRING'};	<input type="hidden" name="navmaps" value="$haveDisc" />
&add_linkitem($args->{'linkitems'},'clearbubbles',	</form>
'document.clearbubbles.submit()',
'Mark all posts read');
$result .= (<<END);
<form name="clearbubbles" method="post" action="/adm/feedback">
<input type="hidden" name="navurl" value="$ENV{'QUERY_STRING'}" />
<input type="hidden" name="navmaps" value="$haveDisc" />
</form>
END	END
	}
}	}
	$result.='</form>';
}	}

if ($args->{'caller'} eq 'navmapsdisplay') {	if ($args->{'caller'} eq 'navmapsdisplay') {
$result .= '<table><tr><td>'.	$result .= '<table><tr><td>'.
&Apache::loncommon::help_open_menu('','Navigation Screen','Navigation_Screen','',undef,'RAT').'</td>';	&Apache::loncommon::help_open_menu('Navigation Screen','Navigation_Screen',undef,'RAT').'</td>';
if ($ENV{'environment.remotenavmap'} ne 'on') {	if ($env{'environment.remotenavmap'} ne 'on') {
$result .= '<td> </td>';	$result .= '<td> </td>';
} else {	} else {
$result .= '</tr><tr>';	$result .= '</tr><tr>';
}	}
$result.=&show_linkitems($args->{'linkitems'});	$result.=&show_linkitems($args->{'linkitems'});
if ($args->{'sort_html'}) {	if ($args->{'sort_html'}) {
if ($ENV{'environment.remotenavmap'} ne 'on') {	if ($env{'environment.remotenavmap'} ne 'on') {
$result.='<td> </td><td> </td><td> </td>'.	$result.='<td> </td><td> </td><td> </td>'.
'<td align="right">'.$args->{'sort_html'}.'</td></tr>';	'<td align="right">'.$args->{'sort_html'}.'</td></tr>';
} else {	} else {
Line 1624 END	Line 1388 END
$args->{'indentLevel'} = 0;	$args->{'indentLevel'} = 0;
$args->{'isNewBranch'} = 0;	$args->{'isNewBranch'} = 0;
$args->{'condensed'} = 0;	$args->{'condensed'} = 0;
$args->{'indentString'} = setDefault($args->{'indentString'}, "<img src='/adm/lonIcons/whitespace1.gif' width='25' height='1' alt='' border='0' />");	my $location=
	&Apache::loncommon::lonhttpdurl("/adm/lonIcons/whitespace1.gif");
	$args->{'indentString'} = setDefault($args->{'indentString'}, "<img src='$location' 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,	# If we're suppressing empty sequences, look for them here. Use DFS for speed,
Line 1685 END	Line 1451 END
return &$oldFilterFunc($res);	return &$oldFilterFunc($res);
};	};
@resources=$navmap->retrieveResources(undef,$filterFunc);	@resources=$navmap->retrieveResources(undef,$filterFunc);
@resources= sort {	@resources= sort { &cmp_title($a,$b) } @resources;
my ($atitle,$btitle) = (lc($a->compTitle),lc($b->compTitle));
$atitle=~s/^\s*//;
$btitle=~s/^\s*//;
return $atitle cmp $btitle
} @resources;
} elsif ($args->{'sort'} eq 'duedate') {	} elsif ($args->{'sort'} eq 'duedate') {
@resources=$navmap->retrieveResources(undef,	my $oldFilterFunc = $filterFunc;
sub { shift->is_problem(); });	my $filterFunc=
@resources= sort	sub {
{	my ($res)=@_;
	if (!$res->is_problem()) { return 0;}
	return &$oldFilterFunc($res);
	};
	@resources=$navmap->retrieveResources(undef,$filterFunc);
	@resources= sort {
if ($a->duedate ne $b->duedate) {	if ($a->duedate ne $b->duedate) {
return $a->duedate cmp $b->duedate;	return $a->duedate cmp $b->duedate;
} else {
lc($a->compTitle) cmp lc($b->compTitle)
}	}
	my $value=&cmp_title($a,$b);
	return $value;
} @resources;	} @resources;
	} elsif ($args->{'sort'} eq 'discussion') {
	my $oldFilterFunc = $filterFunc;
	my $filterFunc=
	sub {
	my ($res)=@_;
	if (!$res->hasDiscussion() &&
	!$res->getFeedback() &&
	!$res->getErrors()) { return 0;}
	return &$oldFilterFunc($res);
	};
	@resources=$navmap->retrieveResources(undef,$filterFunc);
	@resources= sort { &cmp_title($a,$b) } @resources;
} else {	} else {
#unknow sort mechanism or default	#unknow sort mechanism or default
undef($args->{'sort'});	undef($args->{'sort'});
Line 1765 END	Line 1543 END
$args->{'multipart'} = $curRes->multipart();	$args->{'multipart'} = $curRes->multipart();

if ($condenseParts) { # do the condensation	if ($condenseParts) { # do the condensation
if (!$curRes->opendate("0")) {
@parts = ();
$args->{'condensed'} = 1;
}
if (!$args->{'condensed'}) {	if (!$args->{'condensed'}) {
# Decide whether to condense based on similarity	# Decide whether to condense based on similarity
my $status = $curRes->status($parts[0]);	my $status = $curRes->status($parts[0]);
Line 1818 END	Line 1592 END
# Add part 0 so we display it correctly.	# Add part 0 so we display it correctly.
unshift @parts, '0';	unshift @parts, '0';
}	}

	{
	my ($src,$symb,$anchor,$stack);
	if ($args->{'sort'}) {
	my $it = $navmap->getIterator(undef, undef, undef, 1);
	while ( my $res=$it->next()) {
	if (ref($res) &&
	$res->symb() eq $curRes->symb()) { last; }
	}
	$stack=$it->getStack();
	} else {
	$stack=$it->getStack();
	}
	($src,$symb,$anchor)=getLinkForResource($stack);
	if (defined($anchor)) { $anchor='#'.$anchor; }
	my $srcHasQuestion = $src =~ /\?/;
	$args->{"resourceLink"} = $src.
	($srcHasQuestion?'&':'?') .
	'symb=' . &escape($symb).$anchor;
	}
# Now, we've decided what parts to show. Loop through them and	# Now, we've decided what parts to show. Loop through them and
# show them.	# show them.
foreach my $part (@parts) {	foreach my $part (@parts) {
Line 1829 END	Line 1622 END

# Set up some data about the parts that the cols might want	# Set up some data about the parts that the cols might want
my $filter = $it->{FILTER};	my $filter = $it->{FILTER};
my $src;
if ($args->{'sort'}) {
$src = $curRes->src(); # FIXME this is wrong for .pages
} else {
my $stack = $it->getStack();
$src=getLinkForResource($stack);
}
my $anchor='';
if ($src=~s/(\#.*)$//) {
$anchor=$1;
}
my $srcHasQuestion = $src =~ /\?/;
$args->{"resourceLink"} = $src.
($srcHasQuestion?'&':'?') .
'symb=' . &Apache::lonnet::escape($curRes->symb()).
$anchor;

# Now, display each column.	# Now, display each column.
foreach my $col (@$cols) {	foreach my $col (@$cols) {
Line 1911 if (location.href.indexOf('#curloc')==-1	Line 1688 if (location.href.indexOf('#curloc')==-1
$r->rflush();	$r->rflush();
}	}

if ($mustCloseNavMap) { $navmap->untieHashes(); }

return $result;	return $result;
}	}

Line 1924 sub add_linkitem {	Line 1699 sub add_linkitem {

sub show_linkitems {	sub show_linkitems {
my ($linkitems)=@_;	my ($linkitems)=@_;
my @linkorder = ("launchnav","closenav","firsthomework","everything",	my @linkorder = ("blank","launchnav","closenav","firsthomework",
"uncompleted","changefolder","clearbubbles");	"everything","uncompleted","changefolder","clearbubbles");

my $result .= (<<ENDBLOCK);	my $result .= (<<ENDBLOCK);
<td align="left">	<td align="left">
Line 1952 ENDBLOCK	Line 1727 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";	</nobr></form></td>'."\n";

return $result;	return $result;
}	}

Line 1974 In order of increasing complexity and po	Line 1750 In order of increasing complexity and po

=over 4	=over 4

=item * C<$navmap-E<gt>getByX>, where X is B<Id>, B<Symb>, B<Url> or B<MapPc>. This provides	=item * C<$navmap-E<gt>getByX>, where X is B<Id>, B<Symb> or B<MapPc> and getResourceByUrl. This provides
various ways to obtain resource objects, based on various identifiers.	various ways to obtain resource objects, based on various identifiers.
Use this when you want to request information about one object or	Use this when you want to request information about one object or
a handful of resources you already know the identities of, from some	a handful of resources you already know the identities of, from some
other source. For more about Ids, Symbs, and MapPcs, see the	other source. For more about Ids, Symbs, and MapPcs, see the
Resource documentation. Note that Url should be a B<last resort>,	Resource documentation. Note that Url should be a B<last resort>,
not your first choice; it only works when there is only one	not your first choice; it only really works when there is only one
instance of the resource in the course, which only applies to	instance of the resource in the course, which only applies to
maps, and even that may change in the future.	maps, and even that may change in the future (see the B<getResourceByUrl>
	documentation for more details.)

=item * C<my @resources = $navmap-E<gt>retrieveResources(args)>. This	=item * C<my @resources = $navmap-E<gt>retrieveResources(args)>. This
retrieves resources matching some criterion and returns them	retrieves resources matching some criterion and returns them
Line 2012 successful, or B<undef> if not.	Line 1789 successful, or B<undef> if not.

=back	=back

When you are done with the $navmap object, you I<must> call
$navmap->untieHashes(), or you'll prevent the current user from using that
course until the web server is restarted. (!)

=head2 Methods	=head2 Methods

=over 4	=over 4
Line 2028 See iterator documentation below.	Line 1801 See iterator documentation below.

use strict;	use strict;
use GDBM_File;	use GDBM_File;
	use Apache::lonnet;

sub new {	sub new {
# magic invocation to create a class instance	# magic invocation to create a class instance
Line 2047 sub new {	Line 1821 sub new {

my %navmaphash;	my %navmaphash;
my %parmhash;	my %parmhash;
my $courseFn = $ENV{"request.course.fn"};	my $courseFn = $env{"request.course.fn"};
if (!(tie(%navmaphash, 'GDBM_File', "${courseFn}.db",	if (!(tie(%navmaphash, 'GDBM_File', "${courseFn}.db",
&GDBM_READER(), 0640))) {	&GDBM_READER(), 0640))) {
return undef;	return undef;
Line 2073 sub generate_course_user_opt {	Line 1847 sub generate_course_user_opt {
my $self = shift;	my $self = shift;
if ($self->{COURSE_USER_OPT_GENERATED}) { return; }	if ($self->{COURSE_USER_OPT_GENERATED}) { return; }

my $uname=$ENV{'user.name'};	my $uname=$env{'user.name'};
my $udom=$ENV{'user.domain'};	my $udom=$env{'user.domain'};
my $uhome=$ENV{'user.home'};	my $cid=$env{'request.course.id'};
my $cid=$ENV{'request.course.id'};	my $cdom=$env{'course.'.$cid.'.domain'};
my $chome=$ENV{'course.'.$cid.'.home'};	my $cnum=$env{'course.'.$cid.'.num'};
my ($cdom,$cnum)=split(/\_/,$cid);

my $userprefix=$uname.'_'.$udom.'_';

my %courserdatas; my %useropt; my %courseopt; my %userrdatas;
unless ($uhome eq 'no_host') {
# ------------------------------------------------- Get coursedata (if present)	# ------------------------------------------------- Get coursedata (if present)
unless ((time-$courserdatas{$cid.'.last_cache'})<240) {	my $courseopt=&Apache::lonnet::get_courseresdata($cnum,$cdom);
my $reply=&Apache::lonnet::reply('dump:'.$cdom.':'.$cnum.	# Check for network failure
':resourcedata',$chome);	if (!ref($courseopt)) {
# Check for network failure	if ( $courseopt =~ /no.such.host/i \|\| $courseopt =~ /con_lost/i) {
if ( $reply =~ /no.such.host/i \|\| $reply =~ /con_lost/i) {	$self->{NETWORK_FAILURE} = 1;
$self->{NETWORK_FAILURE} = 1;
} elsif ($reply!~/^error\:/) {
$courserdatas{$cid}=$reply;
$courserdatas{$cid.'.last_cache'}=time;
}
}
foreach (split(/\&/,$courserdatas{$cid})) {
my ($name,$value)=split(/\=/,$_);
$courseopt{$userprefix.&Apache::lonnet::unescape($name)}=
&Apache::lonnet::unescape($value);
}	}
	undef($courseopt);
	}

# --------------------------------------------------- Get userdata (if present)	# --------------------------------------------------- Get userdata (if present)
unless ((time-$userrdatas{$uname.'___'.$udom.'.last_cache'})<240) {
my $reply=&Apache::lonnet::reply('dump:'.$udom.':'.$uname.':resourcedata',$uhome);	my $useropt=&Apache::lonnet::get_userresdata($uname,$udom);
if ($reply!~/^error\:/) {	# Check for network failure
$userrdatas{$uname.'___'.$udom}=$reply;	if (!ref($useropt)) {
$userrdatas{$uname.'___'.$udom.'.last_cache'}=time;	if ( $useropt =~ /no.such.host/i \|\| $useropt =~ /con_lost/i) {
}	$self->{NETWORK_FAILURE} = 1;
# check to see if network failed
elsif ( $reply=~/no.such.host/i \|\| $reply=~/con.*lost/i )
{
$self->{NETWORK_FAILURE} = 1;
}
}
foreach (split(/\&/,$userrdatas{$uname.'___'.$udom})) {
my ($name,$value)=split(/\=/,$_);
$useropt{$userprefix.&Apache::lonnet::unescape($name)}=
&Apache::lonnet::unescape($value);
}	}
$self->{COURSE_OPT} = \%courseopt;	undef($useropt);
$self->{USER_OPT} = \%useropt;
}	}

	$self->{COURSE_OPT} = $courseopt;
	$self->{USER_OPT} = $useropt;

$self->{COURSE_USER_OPT_GENERATED} = 1;	$self->{COURSE_USER_OPT_GENERATED} = 1;

return;	return;
Line 2133 sub generate_email_discuss_status {	Line 1887 sub generate_email_discuss_status {
my $symb = shift;	my $symb = shift;
if ($self->{EMAIL_DISCUSS_GENERATED}) { return; }	if ($self->{EMAIL_DISCUSS_GENERATED}) { return; }

my $cid=$ENV{'request.course.id'};	my $cid=$env{'request.course.id'};
my ($cdom,$cnum)=split(/\_/,$cid);	my $cdom=$env{'course.'.$cid.'.domain'};
	my $cnum=$env{'course.'.$cid.'.num'};

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, $cnum);
my %lastread = &Apache::lonnet::dump('nohist_'.$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 (keys %lastread) {
my $key = $_;	my $key = $_;
Line 2154 sub generate_email_discuss_status {	Line 1909 sub generate_email_discuss_status {

my %feedback=();	my %feedback=();
my %error=();	my %error=();
my $keys = &Apache::lonnet::reply('keys:'.	my @keys = &Apache::lonnet::getkeys('nohist_email',$env{'user.domain'},
$ENV{'user.domain'}.':'.	$env{'user.name'});
$ENV{'user.name'}.':nohist_email',
$ENV{'user.home'});

foreach my $msgid (split(/\&/, $keys)) {	foreach my $msgid (@keys) {
$msgid=&Apache::lonnet::unescape($msgid);
if ((!$emailstatus{$msgid}) \|\| ($emailstatus{$msgid} eq 'new')) {	if ((!$emailstatus{$msgid}) \|\| ($emailstatus{$msgid} eq 'new')) {
my $plain=	my $plain=
&Apache::lonnet::unescape(&Apache::lonnet::unescape($msgid));	&LONCAPA::unescape(&LONCAPA::unescape($msgid));
if ($plain=~/(Error\|Feedback) \[([^\]]+)\]/) {	if ($plain=~/ \[([^\]]+)\]\:/) {
my ($what,$url)=($1,$2);	my $url=$1;
if ($what eq 'Error') {	if ($plain=~/\:Error \[/) {
$error{$url}.=','.$msgid;	$error{$url}.=','.$msgid;
} else {	} else {
$feedback{$url}.=','.$msgid;	$feedback{$url}.=','.$msgid;
Line 2191 sub get_user_data {	Line 1943 sub get_user_data {
if ($self->{RETRIEVED_USER_DATA}) { return; }	if ($self->{RETRIEVED_USER_DATA}) { return; }

# Retrieve performance data on problems	# Retrieve performance data on problems
my %student_data = Apache::lonnet::currentdump($ENV{'request.course.id'},	my %student_data = Apache::lonnet::currentdump($env{'request.course.id'},
$ENV{'user.domain'},	$env{'user.domain'},
$ENV{'user.name'});	$env{'user.name'});
$self->{STUDENT_DATA} = \%student_data;	$self->{STUDENT_DATA} = \%student_data;

$self->{RETRIEVED_USER_DATA} = 1;	$self->{RETRIEVED_USER_DATA} = 1;
}	}

	sub get_discussion_data {
	my $self = shift;
	if ($self->{RETRIEVED_DISCUSSION_DATA}) {
	return $self->{DISCUSSION_DATA};
	}

	$self->generate_email_discuss_status();

	my $cid=$env{'request.course.id'};
	my $cdom=$env{'course.'.$cid.'.domain'};
	my $cnum=$env{'course.'.$cid.'.num'};
	# Retrieve discussion data for resources in course
	my %discussion_data = &Apache::lonnet::dumpstore($cid,$cdom,$cnum);


	$self->{DISCUSSION_DATA} = \%discussion_data;
	$self->{RETRIEVED_DISCUSSION_DATA} = 1;
	return $self->{DISCUSSION_DATA};
	}


# Internal function: Takes a key to look up in the nav hash and implements internal	# Internal function: Takes a key to look up in the nav hash and implements internal
# memory caching of that key.	# memory caching of that key.
sub navhash {	sub navhash {
Line 2218 sub navhash {	Line 1991 sub navhash {
# Checks to see if coursemap is defined, matching test in old lonnavmaps	# Checks to see if coursemap is defined, matching test in old lonnavmaps
sub courseMapDefined {	sub courseMapDefined {
my $self = shift;	my $self = shift;
my $uri = &Apache::lonnet::clutter($ENV{'request.course.uri'});	my $uri = &Apache::lonnet::clutter($env{'request.course.uri'});

my $firstres = $self->navhash("map_start_$uri");	my $firstres = $self->navhash("map_start_$uri");
my $lastres = $self->navhash("map_finish_$uri");	my $lastres = $self->navhash("map_finish_$uri");
Line 2228 sub courseMapDefined {	Line 2001 sub courseMapDefined {
sub getIterator {	sub getIterator {
my $self = shift;	my $self = shift;
my $iterator = Apache::lonnavmaps::iterator->new($self, shift, shift,	my $iterator = Apache::lonnavmaps::iterator->new($self, shift, shift,
shift, undef, shift);	shift, undef, shift,
	shift, shift);
return $iterator;	return $iterator;
}	}

# unties the hash when done
sub untieHashes {
my $self = shift;
untie %{$self->{NAV_HASH}};
untie %{$self->{PARM_HASH}};
}

# Private method: Does the given resource (as a symb string) have	# Private method: Does the given resource (as a symb string) have
# current discussion? Returns 0 if chat/mail data not extracted.	# current discussion? Returns 0 if chat/mail data not extracted.
sub hasDiscussion {	sub hasDiscussion {
my $self = shift;	my $self = shift;
my $symb = shift;	my $symb = shift;

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

if (!defined($self->{DISCUSSION_TIME})) { return 0; }	if (!defined($self->{DISCUSSION_TIME})) { return 0; }

#return defined($self->{DISCUSSION_TIME}->{$symb});	#return defined($self->{DISCUSSION_TIME}->{$symb});

# backward compatibility (bulletin boards used to be 'wrapped')	# backward compatibility (bulletin boards used to be 'wrapped')
my $ressymb = $symb;	my $ressymb = $self->wrap_symb($symb);
if ($ressymb =~ m\|adm/(\w+)/(\w+)/(\d+)/bulletinboard$\|) {
unless ($ressymb =~ m\|adm/wrapper/adm\|) {
$ressymb = 'bulletin___'.$3.'___adm/wrapper/adm/'.$1.'/'.$2.'/'.$3.'/bulletinboard';
}
}

if ( defined ( $self->{LAST_READ}->{$ressymb} ) ) {	if ( defined ( $self->{LAST_READ}->{$ressymb} ) ) {
return $self->{DISCUSSION_TIME}->{$ressymb} > $self->{LAST_READ}->{$ressymb};	return $self->{DISCUSSION_TIME}->{$ressymb} > $self->{LAST_READ}->{$ressymb};
} else {	} else {
Line 2267 sub hasDiscussion {	Line 2027 sub hasDiscussion {
}	}
}	}

	sub last_post_time {
	my $self = shift;
	my $symb = shift;
	my $ressymb = $self->wrap_symb($symb);
	return $self->{DISCUSSION_TIME}->{$ressymb};
	}

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

	$self->get_discussion_data();

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

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

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

	for (my $id=$version; $id>0; $id--) {
	my $vkeys=$self->{DISCUSSION_DATA}{$id.':keys:'.$discsymb};
	my @keys=split(/:/,$vkeys);
	if (grep(/^hidden$/ ,@keys)) {
	if (!$hiddenflag) {
	$hidden = $self->{DISCUSSION_DATA}{$id.':'.$discsymb.':hidden'};
	$hiddenflag = 1;
	}
	} elsif (grep(/^deleted$/,@keys)) {
	if (!$deletedflag) {
	$deleted = $self->{DISCUSSION_DATA}{$id.':'.$discsymb.':deleted'};
	$deletedflag = 1;
	}
	} else {
	if (($hidden !~/\.$id\./) && ($deleted !~/\.$id\./)) {
	if ($filter eq 'unread') {
	if ($prevread >= $self->{DISCUSSION_DATA}{$id.':'.$discsymb.':timestamp'}) {
	next;
	}
	}
	$count++;
	$info{$count}{'subject'} =
	$self->{DISCUSSION_DATA}{$id.':'.$discsymb.':subject'};
	$info{$count}{'id'} = $id;
	$info{$count}{'timestamp'} = $self->{DISCUSSION_DATA}{$id.':'.$discsymb.':timestamp'};
	}
	}
	}
	if (wantarray) {
	return ($count,%info);
	}
	return $count;
	}

	sub wrap_symb {
	my $self = shift;
	my $symb = shift;
	if ($symb =~ m-___(adm/[^/]+/[^/]+/)(\d+)(/bulletinboard)$-) {
	unless ($symb =~ m\|adm/wrapper/adm\|) {
	$symb = 'bulletin___'.$2.'___adm/wrapper/'.$1.$2.$3;
	}
	}
	return $symb;
	}

	sub unwrap_symb {
	my $self = shift;
	my $ressymb = shift;
	my $discsymb = $ressymb;
	if ($ressymb =~ m-^(bulletin___\d+___)adm/wrapper/(adm/[^/]+/[^/]+/\d+/bulletinboard)$-) {
	$discsymb = $1.$2;
	}
	return $discsymb;
	}

# Private method: Does the given resource (as a symb string) have	# Private method: Does the given resource (as a symb string) have
# current feedback? Returns the string in the feedback hash, which	# current feedback? Returns the string in the feedback hash, which
# will be false if it does not exist.	# will be false if it does not exist.

sub getFeedback {	sub getFeedback {
my $self = shift;	my $self = shift;
my $symb = shift;	my $symb = shift;
Line 2365 resource in the navmap.	Line 2208 resource in the navmap.
sub firstResource {	sub firstResource {
my $self = shift;	my $self = shift;
my $firstResource = $self->navhash('map_start_' .	my $firstResource = $self->navhash('map_start_' .
&Apache::lonnet::clutter($ENV{'request.course.uri'}));	&Apache::lonnet::clutter($env{'request.course.uri'}));
return $self->getById($firstResource);	return $self->getById($firstResource);
}	}

Line 2381 in the navmap.	Line 2224 in the navmap.
sub finishResource {	sub finishResource {
my $self = shift;	my $self = shift;
my $firstResource = $self->navhash('map_finish_' .	my $firstResource = $self->navhash('map_finish_' .
&Apache::lonnet::clutter($ENV{'request.course.uri'}));	&Apache::lonnet::clutter($env{'request.course.uri'}));
return $self->getById($firstResource);	return $self->getById($firstResource);
}	}

Line 2408 sub parmval_real {	Line 2251 sub parmval_real {
# Make sure the {USER_OPT} and {COURSE_OPT} hashes are populated	# Make sure the {USER_OPT} and {COURSE_OPT} hashes are populated
$self->generate_course_user_opt();	$self->generate_course_user_opt();

my $cid=$ENV{'request.course.id'};	my $cid=$env{'request.course.id'};
my $csec=$ENV{'request.course.sec'};	my $csec=$env{'request.course.sec'};
my $uname=$ENV{'user.name'};	my $cgroup='';
my $udom=$ENV{'user.domain'};	my @cgrps=split(/:/,$env{'request.course.groups'});
	if (@cgrps > 0) {
	@cgrps = sort(@cgrps);
	$cgroup = $cgrps[0];
	}
	my $uname=$env{'user.name'};
	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);
	$mapname = &Apache::lonnet::deversion($mapname);
# ----------------------------------------------------- Cascading lookup scheme	# ----------------------------------------------------- Cascading lookup scheme
my $rwhat=$what;	my $rwhat=$what;
$what=~s/^parameter\_//;	$what=~s/^parameter\_//;
Line 2425 sub parmval_real {	Line 2274 sub parmval_real {

my $symbparm=$symb.'.'.$what;	my $symbparm=$symb.'.'.$what;
my $mapparm=$mapname.'___(all).'.$what;	my $mapparm=$mapname.'___(all).'.$what;
my $usercourseprefix=$uname.'_'.$udom.'_'.$cid;	my $usercourseprefix=$cid;

	my $grplevel=$usercourseprefix.'.['.$cgroup.'].'.$what;
	my $grplevelr=$usercourseprefix.'.['.$cgroup.'].'.$symbparm;
	my $grplevelm=$usercourseprefix.'.['.$cgroup.'].'.$mapparm;

my $seclevel= $usercourseprefix.'.['.$csec.'].'.$what;	my $seclevel= $usercourseprefix.'.['.$csec.'].'.$what;
my $seclevelr=$usercourseprefix.'.['.$csec.'].'.$symbparm;	my $seclevelr=$usercourseprefix.'.['.$csec.'].'.$symbparm;
Line 2447 sub parmval_real {	Line 2300 sub parmval_real {
}	}

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

if ($csec and defined($courseopt)) {	if ($csec and defined($courseopt)) {
if (defined($$courseopt{$seclevelr})) { return $$courseopt{$seclevelr}; }	if (defined($$courseopt{$seclevelr})) { return $$courseopt{$seclevelr}; }
if (defined($$courseopt{$seclevelm})) { return $$courseopt{$seclevelm}; }	if (defined($$courseopt{$seclevelm})) { return $$courseopt{$seclevelm}; }
Line 2455 sub parmval_real {	Line 2314 sub parmval_real {

if (defined($courseopt)) {	if (defined($courseopt)) {
if (defined($$courseopt{$courselevelr})) { return $$courseopt{$courselevelr}; }	if (defined($$courseopt{$courselevelr})) { return $$courseopt{$courselevelr}; }
if (defined($$courseopt{$courselevelm})) { return $$courseopt{$courselevelm}; }
if (defined($$courseopt{$courselevel})) { return $$courseopt{$courselevel}; }
}	}

# ----------------------------------------------------- third, check map parms	# ----------------------------------------------------- third, check map parms
Line 2473 sub parmval_real {	Line 2330 sub parmval_real {
$default=&Apache::lonnet::metadata($fn,'parameter_'.$meta_rwhat);	$default=&Apache::lonnet::metadata($fn,'parameter_'.$meta_rwhat);
if (defined($default)) { return $default}	if (defined($default)) { return $default}

# --------------------------------------------------- fifth , cascade up parts	# --------------------------------------------------- fifth, check more course
	if (defined($courseopt)) {
	if (defined($$courseopt{$courselevelm})) { return $$courseopt{$courselevelm}; }
	if (defined($$courseopt{$courselevel})) { return $$courseopt{$courselevel}; }
	}

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

my ($space,@qualifier)=split(/\./,$rwhat);	my ($space,@qualifier)=split(/\./,$rwhat);
my $qualifier=join('.',@qualifier);	my $qualifier=join('.',@qualifier);
Line 2493 sub parmval_real {	Line 2356 sub parmval_real {

=pod	=pod

=item * B<getResourceByUrl>(url):	=item * B<getResourceByUrl>(url,multiple):

Retrieves a resource object by URL of the resource. If passed a	Retrieves a resource object by URL of the resource, unless the optional
resource object, it will simply return it, so it is safe to use this	multiple parameter is included in wahich caes an array of resource
method in code like "$res = $navmap->getResourceByUrl($res)", if	objects is returned. If passed a resource object, it will simply return
you're not sure if $res is already an object, or just a URL. If the	it, so it is safe to use this method in code like
resource appears multiple times in the course, only the first instance	"$res = $navmap->getResourceByUrl($res)"
will be returned. As a result, this is probably useful only for maps.	if you're not sure if $res is already an object, or just a URL. If the
	resource appears multiple times in the course, only the first instance
	will be returned (useful for maps), unless the multiple parameter has
	been included, in which case all instances are returned in an array.

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

The map is a specification of a map to retreive the resources from,	The map is a specification of a map to retreive the resources from,
either as a url or as an object. The filterFunc is a reference to a	either as a url or as an object. The filterFunc is a reference to a
Line 2510 function that takes a resource object as	Line 2376 function that takes a resource object as
true if the resource should be included, or false if it should not	true if the resource should be included, or false if it should not
be. If recursive is true, the map will be recursively examined,	be. If recursive is true, the map will be recursively examined,
otherwise it will not be. If bailout is true, the function will return	otherwise it will not be. If bailout is true, the function will return
as soon as it finds a resource, if false it will finish. By default,	as soon as it finds a resource, if false it will finish. If showall is
the map is the top-level map of the course, filterFunc is a function	true it will not hide maps that contain nothing but one other map. By
that always returns 1, recursive is true, bailout is false. The	default, the map is the top-level map of the course, filterFunc is a
resources will be returned in a list containing the resource objects	function that always returns 1, recursive is true, bailout is false,
for the corresponding resources, with B<no structure information> in	showall is false. The resources will be returned in a list containing
the list; regardless of branching, recursion, etc., it will be a flat	the resource objects for the corresponding resources, with B<no
list.	structure information> in the list; regardless of branching,
	recursion, etc., it will be a flat list.

Thus, this is suitable for cases where you don't want the structure,	Thus, this is suitable for cases where you don't want the structure,
just a list of all resources. It is also suitable for finding out how	just a list of all resources. It is also suitable for finding out how
Line 2525 want to know is if I<any> resources matc	Line 2392 want to know is if I<any> resources matc
parameter will allow you to avoid potentially expensive enumeration of	parameter will allow you to avoid potentially expensive enumeration of
all matching resources.	all matching resources.

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

Convience method for	Convience method for

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

which will tell whether the map has resources matching the description	which will tell whether the map has resources matching the description
in the filter function.	in the filter function.

	=item * B<usedVersion>(url):

	Retrieves version infomation for a url. Returns the version (a number, or
	the string "mostrecent") for resources which have version information in
	the big hash.

=cut	=cut


sub getResourceByUrl {	sub getResourceByUrl {
my $self = shift;	my $self = shift;
my $resUrl = shift;	my $resUrl = shift;
	my $multiple = shift;

if (ref($resUrl)) { return $resUrl; }	if (ref($resUrl)) { return $resUrl; }

$resUrl = &Apache::lonnet::clutter($resUrl);	$resUrl = &Apache::lonnet::clutter($resUrl);
my $resId = $self->{NAV_HASH}->{'ids_' . $resUrl};	my $resId = $self->{NAV_HASH}->{'ids_' . $resUrl};
if ($resId =~ /,/) {
$resId = (split (/,/, $resId))[0];
}
if (!$resId) { return ''; }	if (!$resId) { return ''; }
return $self->getById($resId);	if ($multiple) {
	my @resources = ();
	my @resIds = split (/,/, $resId);
	foreach my $id (@resIds) {
	my $resourceId = $self->getById($id);
	if ($resourceId) {
	push(@resources,$resourceId);
	}
	}
	return @resources;
	} else {
	if ($resId =~ /,/) {
	$resId = (split (/,/, $resId))[0];
	}
	return $self->getById($resId);
	}
}	}

sub retrieveResources {	sub retrieveResources {
Line 2563 sub retrieveResources {	Line 2449 sub retrieveResources {
if (!defined($recursive)) { $recursive = 1; }	if (!defined($recursive)) { $recursive = 1; }
my $bailout = shift;	my $bailout = shift;
if (!defined($bailout)) { $bailout = 0; }	if (!defined($bailout)) { $bailout = 0; }
	my $showall = shift;
# Create the necessary iterator.	# Create the necessary iterator.
if (!ref($map)) { # assume it's a url of a map.	if (!ref($map)) { # assume it's a url of a map.
$map = $self->getResourceByUrl($map);	$map = $self->getResourceByUrl($map);
Line 2582 sub retrieveResources {	Line 2468 sub retrieveResources {

# Get an iterator.	# Get an iterator.
my $it = $self->getIterator($map->map_start(), $map->map_finish(),	my $it = $self->getIterator($map->map_start(), $map->map_finish(),
undef, $recursive);	undef, $recursive, $showall);

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

Line 2612 sub hasResource {	Line 2498 sub hasResource {
my $map = shift;	my $map = shift;
my $filterFunc = shift;	my $filterFunc = shift;
my $recursive = shift;	my $recursive = shift;
	my $showall = shift;

return scalar($self->retrieveResources($map, $filterFunc, $recursive, 1)) > 0;	return scalar($self->retrieveResources($map, $filterFunc, $recursive, 1, $showall)) > 0;
	}

	sub usedVersion {
	my $self = shift;
	my $linkurl = shift;
	return $self->navhash("version_$linkurl");
}	}

1;	1;

package Apache::lonnavmaps::iterator;	package Apache::lonnavmaps::iterator;
	use Scalar::Util qw(weaken);
	use Apache::lonnet;

=pod	=pod

Line 2759 sub new {	Line 2654 sub new {
my $class = ref($proto) \|\| $proto;	my $class = ref($proto) \|\| $proto;
my $self = {};	my $self = {};

$self->{NAV_MAP} = shift;	weaken($self->{NAV_MAP} = shift);
return undef unless ($self->{NAV_MAP});	return undef unless ($self->{NAV_MAP});

# Handle the parameters	# Handle the parameters
Line 2879 sub new {	Line 2774 sub new {
Apache::lonnavmaps::iterator->new($self->{NAV_MAP}, $firstResource,	Apache::lonnavmaps::iterator->new($self->{NAV_MAP}, $firstResource,
$finishResource, $self->{FILTER},	$finishResource, $self->{FILTER},
$self->{ALREADY_SEEN},	$self->{ALREADY_SEEN},
$self->{CONDITION}, 0);	$self->{CONDITION},
	$self->{FORCE_TOP});

}	}

Line 3042 sub next {	Line 2938 sub next {
$self->{RECURSIVE_ITERATOR} =	$self->{RECURSIVE_ITERATOR} =
Apache::lonnavmaps::iterator->new($self->{NAV_MAP}, $firstResource,	Apache::lonnavmaps::iterator->new($self->{NAV_MAP}, $firstResource,
$finishResource, $self->{FILTER},	$finishResource, $self->{FILTER},
$self->{ALREADY_SEEN}, $self->{CONDITION});	$self->{ALREADY_SEEN},
	$self->{CONDITION},
	$self->{FORCE_TOP});
}	}

# If this is a blank resource, don't actually return it.	# If this is a blank resource, don't actually return it.
Line 3095 sub populateStack {	Line 2993 sub populateStack {
1;	1;

package Apache::lonnavmaps::DFSiterator;	package Apache::lonnavmaps::DFSiterator;
	use Scalar::Util qw(weaken);
	use Apache::lonnet;

# Not documented in the perldoc: This is a simple iterator that just walks	# Not documented in the perldoc: This is a simple iterator that just walks
# through the nav map and presents the resources in a depth-first search	# through the nav map and presents the resources in a depth-first search
Line 3123 sub new {	Line 3023 sub new {
my $class = ref($proto) \|\| $proto;	my $class = ref($proto) \|\| $proto;
my $self = {};	my $self = {};

$self->{NAV_MAP} = shift;	weaken($self->{NAV_MAP} = shift);
return undef unless ($self->{NAV_MAP});	return undef unless ($self->{NAV_MAP});

$self->{FIRST_RESOURCE} = shift \|\| $self->{NAV_MAP}->firstResource();	$self->{FIRST_RESOURCE} = shift \|\| $self->{NAV_MAP}->firstResource();
Line 3277 sub populateStack {	Line 3177 sub populateStack {
1;	1;

package Apache::lonnavmaps::resource;	package Apache::lonnavmaps::resource;
	use Scalar::Util qw(weaken);
use Apache::lonnet;	use Apache::lonnet;

=pod	=pod
Line 3359 sub new {	Line 3259 sub new {
my $class = ref($proto) \|\| $proto;	my $class = ref($proto) \|\| $proto;
my $self = {};	my $self = {};

$self->{NAV_MAP} = shift;	weaken($self->{NAV_MAP} = shift);
$self->{ID} = shift;	$self->{ID} = shift;

# Store this new resource in the parent nav map's cache.	# Store this new resource in the parent nav map's cache.
Line 3447 Returns the title of the resource.	Line 3347 Returns the title of the resource.
# These info functions can be used directly, as they don't return	# These info functions can be used directly, as they don't return
# resource information.	# resource information.
sub comesfrom { my $self=shift; return $self->navHash("comesfrom_", 1); }	sub comesfrom { my $self=shift; return $self->navHash("comesfrom_", 1); }
	sub encrypted { my $self=shift; return $self->navHash("encrypted_", 1); }
sub ext { my $self=shift; return $self->navHash("ext_", 1) eq 'true:'; }	sub ext { my $self=shift; return $self->navHash("ext_", 1) eq 'true:'; }
sub from { my $self=shift; return $self->navHash("from_", 1); }	sub from { my $self=shift; return $self->navHash("from_", 1); }
# considered private and undocumented	# considered private and undocumented
Line 3455 sub kind { my $self=shift; return $self-	Line 3356 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 $self->{NAV_MAP}->{PARM_HASH}->{$self->symb .	return $self->parmval('randompick');
'.0.parameter_randompick'};	}
	sub link {
	my $self=shift;
	if ($self->encrypted()) { return &Apache::lonenc::encrypted($self->src); }
	return $self->src;
}	}
sub src {	sub src {
my $self=shift;	my $self=shift;
return $self->navHash("src_", 1);	return $self->navHash("src_", 1);
}	}
	sub shown_symb {
	my $self=shift;
	if ($self->encrypted()) {return &Apache::lonenc::encrypted($self->symb());}
	return $self->symb();
	}
	sub id {
	my $self=shift;
	return $self->{ID};
	}
	sub enclosing_map_src {
	my $self=shift;
	(my $first, my $second) = $self->{ID} =~ /(\d+).(\d+)/;
	return $self->navHash('map_id_'.$first);
	}
sub symb {	sub symb {
my $self=shift;	my $self=shift;
(my $first, my $second) = $self->{ID} =~ /(\d+).(\d+)/;	(my $first, my $second) = $self->{ID} =~ /(\d+).(\d+)/;
Line 3470 sub symb {	Line 3389 sub symb {
. '___' . $second . '___' . $symbSrc;	. '___' . $second . '___' . $symbSrc;
return &Apache::lonnet::symbclean($symb);	return &Apache::lonnet::symbclean($symb);
}	}
	sub wrap_symb {
	my $self = shift;
	return $self->{NAV_MAP}->wrap_symb($self->symb());
	}
sub title {	sub title {
my $self=shift;	my $self=shift;
if ($self->{ID} eq '0.0') {	if ($self->{ID} eq '0.0') {
# If this is the top-level map, return the title of the course	# If this is the top-level map, return the title of the course
# since this map can not be titled otherwise.	# since this map can not be titled otherwise.
return $ENV{'course.'.$ENV{'request.course.id'}.'.description'};	return $env{'course.'.$env{'request.course.id'}.'.description'};
}	}
return $self->navHash("title_", 1); }	return $self->navHash("title_", 1); }
# considered private and undocumented	# considered private and undocumented
sub to { my $self=shift; return $self->navHash("to_", 1); }	sub to { my $self=shift; return $self->navHash("to_", 1); }
	sub condition {
	my $self=shift;
	my $undercond=$self->navHash("undercond_", 1);
	if (!defined($undercond)) { return 1; };
	my $condid=$self->navHash("condid_$undercond");
	if (!defined($condid)) { return 1; };
	my $condition=&Apache::lonnet::directcondval($condid);
	return $condition;
	}
	sub condval {
	my $self=shift;
	my ($pathname,$filename) =
	&Apache::lonnet::split_uri_for_cond($self->src());

	my $match=($env{'acc.res.'.$env{'request.course.id'}.'.'.$pathname}=~
	/\&\Q$filename\E\:([\d\\|]+)\&/);
	if ($match) {
	return &Apache::lonnet::condval($1);
	}
	return 0;
	}
sub compTitle {	sub compTitle {
my $self = shift;	my $self = shift;
my $title = $self->title();	my $title = $self->title();
Line 3530 sub retrieveResources {	Line 3474 sub retrieveResources {
return $self->{NAV_MAP}->retrieveResources(@_);	return $self->{NAV_MAP}->retrieveResources(@_);
}	}

	sub is_exam {
	my ($self,$part) = @_;
	if ($self->parmval('type',$part) eq 'exam') {
	return 1;
	}
	if ($self->src() =~ /\.(exam)$/) {
	return 1;
	}
	return 0;
	}
sub is_html {	sub is_html {
my $self=shift;	my $self=shift;
my $src = $self->src();	my $src = $self->src();
Line 3542 sub is_page {	Line 3496 sub is_page {
return $self->navHash("is_map_", 1) &&	return $self->navHash("is_map_", 1) &&
$self->navHash("map_type_" . $self->map_pc()) eq 'page';	$self->navHash("map_type_" . $self->map_pc()) eq 'page';
}	}
	sub is_practice {
	my $self=shift;
	my ($part) = @_;
	if ($self->parmval('type',$part) eq 'practice') {
	return 1;
	}
	return 0;
	}
sub is_problem {	sub is_problem {
my $self=shift;	my $self=shift;
my $src = $self->src();	my $src = $self->src();
return ($src =~ /\.(problem\|exam\|quiz\|assess\|survey\|form\|library)$/)	if ($src =~ /\.(problem\|exam\|quiz\|assess\|survey\|form\|library\|task)$/) {
	return !($self->is_practice());
	}
	return 0;
}	}
sub contains_problem {	sub contains_problem {
my $self=shift;	my $self=shift;
Line 3557 sub contains_problem {	Line 3522 sub contains_problem {
}	}
sub is_sequence {	sub is_sequence {
my $self=shift;	my $self=shift;
my $src = $self->src();
return $self->navHash("is_map_", 1) &&	return $self->navHash("is_map_", 1) &&
$self->navHash("map_type_" . $self->map_pc()) eq 'sequence';	$self->navHash("map_type_" . $self->map_pc()) eq 'sequence';
}	}
Line 3572 sub is_survey {	Line 3536 sub is_survey {
}	}
return 0;	return 0;
}	}
	sub is_task {
	my $self=shift;
	my $src = $self->src();
	return ($src =~ /\.(task)$/)
	}

sub is_empty_sequence {	sub is_empty_sequence {
my $self=shift;	my $self=shift;
Line 3627 Returns a string with the type of the ma	Line 3596 Returns a string with the type of the ma
sub map_finish {	sub map_finish {
my $self = shift;	my $self = shift;
my $src = $self->src();	my $src = $self->src();
$src = Apache::lonnet::clutter($src);	$src = &Apache::lonnet::clutter($src);
my $res = $self->navHash("map_finish_$src", 0);	my $res = $self->navHash("map_finish_$src", 0);
$res = $self->{NAV_MAP}->getById($res);	$res = $self->{NAV_MAP}->getById($res);
return $res;	return $res;
Line 3640 sub map_pc {	Line 3609 sub map_pc {
sub map_start {	sub map_start {
my $self = shift;	my $self = shift;
my $src = $self->src();	my $src = $self->src();
$src = Apache::lonnet::clutter($src);	$src = &Apache::lonnet::clutter($src);
my $res = $self->navHash("map_start_$src", 0);	my $res = $self->navHash("map_start_$src", 0);
$res = $self->{NAV_MAP}->getById($res);	$res = $self->{NAV_MAP}->getById($res);
return $res;	return $res;
Line 3752 sub awarded {	Line 3721 sub awarded {
if (!defined($part)) { $part = '0'; }	if (!defined($part)) { $part = '0'; }
return $self->{NAV_MAP}->{STUDENT_DATA}->{$self->symb()}->{'resource.'.$part.'.awarded'};	return $self->{NAV_MAP}->{STUDENT_DATA}->{$self->symb()}->{'resource.'.$part.'.awarded'};
}	}
	# this should work exactly like the copy in lonhomework.pm
sub duedate {	sub duedate {
(my $self, my $part) = @_;	(my $self, my $part) = @_;
	my $date;
my $interval=$self->parmval("interval", $part);	my $interval=$self->parmval("interval", $part);
if ($interval) {	my $due_date=$self->parmval("duedate", $part);
	if ($interval =~ /\d+/) {
my $first_access=&Apache::lonnet::get_first_access('map',$self->symb);	my $first_access=&Apache::lonnet::get_first_access('map',$self->symb);
if ($first_access) { return ($first_access+$interval); }	if (defined($first_access)) {
	$interval = $first_access+$interval;
	$date = ($interval < $due_date)? $interval : $due_date;
	} else {
	$date = $due_date;
	}
	} else {
	$date = $due_date;
}	}
return $self->parmval("duedate", $part);	return $date;
	}
	sub handgrade {
	(my $self, my $part) = @_;
	return $self->parmval("handgrade", $part);
}	}
sub maxtries {	sub maxtries {
(my $self, my $part) = @_;	(my $self, my $part) = @_;
Line 3799 sub weight {	Line 3782 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',	return &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'});
}	}
sub part_display {	sub part_display {
my $self= shift(); my $partID = shift();	my $self= shift(); my $partID = shift();
Line 3852 Returns a false value if there has been	Line 3835 Returns a false value if there has been
logged in, true if there has. Always returns false if the discussion	logged in, true if there has. Always returns false if the discussion
data was not extracted when the nav map was constructed.	data was not extracted when the nav map was constructed.

	=item * B<last_post_time>:

	Returns a false value if there hasn't been discussion otherwise returns
	unix timestamp of last time a discussion posting (or edit) was made.

	=item * B<discussion_info>:

	optional argument is a filter (currently can be 'unread');
	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
	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>:

Gets the feedback for the resource and returns the raw feedback string	Gets the feedback for the resource and returns the raw feedback string
Line 3860 email data was not extracted when the na	Line 3858 email data was not extracted when the na
used like this:	used like this:

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

and use the link as appropriate.	and use the link as appropriate.
Line 3872 sub hasDiscussion {	Line 3870 sub hasDiscussion {
return $self->{NAV_MAP}->hasDiscussion($self->symb());	return $self->{NAV_MAP}->hasDiscussion($self->symb());
}	}

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

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

sub getFeedback {	sub getFeedback {
my $self = shift;	my $self = shift;
my $source = $self->src();	my $source = $self->src();
Line 3969 sub countResponses {	Line 3977 sub countResponses {
sub responseTypes {	sub responseTypes {
my $self = shift;	my $self = shift;
my %responses;	my %responses;
foreach my $part ($self->parts()) {	foreach my $part (@{$self->parts()}) {
foreach my $responsetype ($self->responseType($part)) {	foreach my $responsetype ($self->responseType($part)) {
$responses{$responsetype}++ if (defined($responsetype));	$responses{$responsetype}++ if (defined($responsetype));
}	}
Line 4045 sub extractParts {	Line 4053 sub extractParts {
return;	return;
}	}
foreach (split(/\,/,$metadata)) {	foreach (split(/\,/,$metadata)) {
if ($_ =~ /^part_(.*)$/) {	if ($_ =~ /^(?: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 4080 sub extractParts {	Line 4088 sub extractParts {
# So we have to use our knowlege of part names to figure out	# So we have to use our knowlege of part names to figure out
# where the part names begin and end, and even then, it is possible	# where the part names begin and end, and even then, it is possible
# to construct ambiguous situations.	# to construct ambiguous situations.
foreach (split /,/, $metadata) {	foreach my $data (split /,/, $metadata) {
if ($_ =~ /^([a-zA-Z]+)response_(.*)/) {	if ($data =~ /^([a-zA-Z]+)response_(.*)/
	\|\| $data =~ /^(Task)_(.*)/) {
my $responseType = $1;	my $responseType = $1;
my $partStuff = $2;	my $partStuff = $2;
my $partIdSoFar = '';	my $partIdSoFar = '';
Line 4093 sub extractParts {	Line 4102 sub extractParts {
if ($parts{$partIdSoFar}) {	if ($parts{$partIdSoFar}) {
my @otherChunks = @partChunks[$i+1..$#partChunks];	my @otherChunks = @partChunks[$i+1..$#partChunks];
my $responseId = join('_', @otherChunks);	my $responseId = join('_', @otherChunks);
push @{$responseIdHash{$partIdSoFar}}, $responseId;	if ($self->is_task()) {
push @{$responseTypeHash{$partIdSoFar}}, $responseType;	push(@{$responseIdHash{$partIdSoFar}},
	$partIdSoFar);
	} else {
	push(@{$responseIdHash{$partIdSoFar}},
	$responseId);
	}
	push(@{$responseTypeHash{$partIdSoFar}},
	$responseType);
}	}
}	}
}	}
Line 4310 sub ATTEMPTED { return 16; }	Line 4326 sub ATTEMPTED { return 16; }

sub getCompletionStatus {	sub getCompletionStatus {
my $self = shift;	my $self = shift;
	my $part = shift;
return $self->NETWORK_FAILURE if ($self->{NAV_MAP}->{NETWORK_FAILURE});	return $self->NETWORK_FAILURE if ($self->{NAV_MAP}->{NETWORK_FAILURE});

my $status = $self->queryRestoreHash('solved', shift);	my $status = $self->queryRestoreHash('solved', $part);

# Left as separate if statements in case we ever do more with this	# Left as separate if statements in case we ever do more with this
if ($status eq 'correct_by_student') {return $self->CORRECT;}	if ($status eq 'correct_by_student') {return $self->CORRECT;}
if ($status eq 'correct_by_scantron') {return $self->CORRECT;}	if ($status eq 'correct_by_scantron') {return $self->CORRECT;}
if ($status eq 'correct_by_override') {return $self->CORRECT_BY_OVERRIDE; }	if ($status eq 'correct_by_override') {
	return $self->CORRECT_BY_OVERRIDE;
	}
if ($status eq 'incorrect_attempted') {return $self->INCORRECT; }	if ($status eq 'incorrect_attempted') {return $self->INCORRECT; }
if ($status eq 'incorrect_by_override') {return $self->INCORRECT_BY_OVERRIDE; }	if ($status eq 'incorrect_by_override') {return $self->INCORRECT_BY_OVERRIDE; }
if ($status eq 'excused') {return $self->EXCUSED; }	if ($status eq 'excused') {return $self->EXCUSED; }
Line 4421 An answer has been submitted, but the st	Line 4440 An answer has been submitted, but the st

sub TRIES_LEFT { return 20; }	sub TRIES_LEFT { return 20; }
sub ANSWER_SUBMITTED { return 21; }	sub ANSWER_SUBMITTED { return 21; }
	sub PARTIALLY_CORRECT{ return 22; }

sub status {	sub status {
my $self = shift;	my $self = shift;
Line 4439 sub status {	Line 4459 sub status {
my $suppressFeedback = $self->problemstatus($part) eq 'no';	my $suppressFeedback = $self->problemstatus($part) eq 'no';
# 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 ($self->answerdate($part) && $self->answerdate($part) < time()) {	if ($self->duedate($part) && $self->duedate($part) < time() &&
	$self->answerdate($part) && $self->answerdate($part) < time()) {
$suppressFeedback = 0;	$suppressFeedback = 0;
}	}

# 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 $suppressFeedback? ANSWER_SUBMITTED : CORRECT;	if ( $suppressFeedback ) { return ANSWER_SUBMITTED }
	my $awarded=$self->awarded($part);
	if ($awarded < 1 && $awarded > 0) {
	return PARTIALLY_CORRECT;
	} elsif ($awarded<1) {
	return INCORRECT;
	}
	return CORRECT;
	}

	# If it's WRONG... and not open
	if ( ($completionStatus == INCORRECT \|\|
	$completionStatus == INCORRECT_BY_OVERRIDE)
	&& (!$self->opendate($part) \|\| $self->opendate($part) > time()) ) {
	return INCORRECT;
}	}

if ($completionStatus == ATTEMPTED) {	if ($completionStatus == ATTEMPTED) {
Line 4533 my %compositeToSimple =	Line 4568 my %compositeToSimple =
NETWORK_FAILURE() => ERROR,	NETWORK_FAILURE() => ERROR,
NOTHING_SET() => CLOSED,	NOTHING_SET() => CLOSED,
CORRECT() => CORRECT,	CORRECT() => CORRECT,
	PARTIALLY_CORRECT() => PARTIALLY_CORRECT,
EXCUSED() => CORRECT,	EXCUSED() => CORRECT,
PAST_DUE_NO_ANSWER() => INCORRECT,	PAST_DUE_NO_ANSWER() => INCORRECT,
PAST_DUE_ANSWER_LATER() => INCORRECT,	PAST_DUE_ANSWER_LATER() => INCORRECT,
Line 4653 sub getNext {	Line 4689 sub getNext {
my $to = $self->to();	my $to = $self->to();
foreach my $branch ( split(/,/, $to) ) {	foreach my $branch ( split(/,/, $to) ) {
my $choice = $self->{NAV_MAP}->getById($branch);	my $choice = $self->{NAV_MAP}->getById($branch);
	#if (!$choice->condition()) { next; }
my $next = $choice->goesto();	my $next = $choice->goesto();
$next = $self->{NAV_MAP}->getById($next);	$next = $self->{NAV_MAP}->getById($next);

Line 4681 sub browsePriv {	Line 4718 sub browsePriv {
return $self->{BROWSE_PRIV};	return $self->{BROWSE_PRIV};
}	}

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

=pod	=pod

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

Removed from v.1.295
changed lines
	Added in v.1.393