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Diff for /loncom/interface/lonnavmaps.pm between versions 1.271 and 1.366

version 1.271, 2004/07/26 22:19:59	version 1.366, 2006/03/04 05:55:43
Line 30	Line 30
package Apache::lonnavmaps;	package Apache::lonnavmaps;

use strict;	use strict;
	use GDBM_File;
use Apache::Constants qw(:common :http);	use Apache::Constants qw(:common :http);
use Apache::loncommon();	use Apache::loncommon();
use Apache::lonmenu();	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 );

# 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 {	sub launch_win {
my ($mode,$script)=@_;	my ($mode,$script,$toplinkitems,$firsttime)=@_;
my $result;	my $result;
if ($script ne 'no') {	if ($script ne 'no') {
$result.='<script type="text/javascript">';	$result.='<script type="text/javascript">';
}	}
$result.='function launch_navmapwin() {	if ($firsttime) {
	$result.='function launch_navmapwin() {
	newWindow=open(\'/adm/navmaps?launchExternalRoles\',\'loncapanav\',\'width=400,height=600,scrollbars=1\');
	}';
	} else {
	$result.='function launch_navmapwin() {
newWindow=open(\'/adm/navmaps?launchExternal\',\'loncapanav\',\'width=400,height=600,scrollbars=1\');	newWindow=open(\'/adm/navmaps?launchExternal\',\'loncapanav\',\'width=400,height=600,scrollbars=1\');
}';	}';
	}
if ($mode eq 'now') {	if ($mode eq 'now') {
$result.="\nlaunch_navmapwin();\n";	$result.="\nlaunch_navmapwin();\n";
}	}
Line 99 sub launch_win {	Line 111 sub launch_win {
$result.='</script>';	$result.='</script>';
}	}
if ($mode eq 'link') {	if ($mode eq 'link') {
$result.='<a href="javascript:launch_navmapwin();void(0);">'	&add_linkitem($toplinkitems,'launchnav','launch_navmapwin()',
.&mt("Launch Navmaps in seperate window")."</a> ";	"Launch navigation window");
}	}
return $result;	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 120 ENDCLOSE	Line 132 ENDCLOSE
}	}

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 140 sub handler {	Line 152 sub handler {

sub real_handler {	sub real_handler {
my $r = shift;	my $r = shift;
	#my $t0=[&gettimeofday()];
# Handle header-only request	# Handle header-only request
if ($r->header_only) {	if ($r->header_only) {
if ($ENV{'browser.mathml'}) {	if ($env{'browser.mathml'}) {
&Apache::loncommon::content_type($r,'text/xml');	&Apache::loncommon::content_type($r,'text/xml');
} else {	} else {
&Apache::loncommon::content_type($r,'text/html');	&Apache::loncommon::content_type($r,'text/html');
Line 153 sub real_handler {	Line 165 sub real_handler {
}	}

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

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

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

# Create the nav map	# Create the nav map
Line 188 ENDSUBM	Line 235 ENDSUBM

if (!defined($navmap)) {	if (!defined($navmap)) {
my $requrl = $r->uri;	my $requrl = $r->uri;
$ENV{'user.error.msg'} = "$requrl:bre:0:0:Course not initialized";	$env{'user.error.msg'} = "$requrl:bre:0:0:Course not initialized";
return HTTP_NOT_ACCEPTABLE;	return HTTP_NOT_ACCEPTABLE;
}	}
	$r->send_http_header;
$r->print("<html><head>\n");	my $html=&Apache::lonxml::xmlbegin();
	$r->print("$html<head>\n");
$r->print("<title>".&mt('Navigate Course Contents')."</title>");	$r->print("<title>".&mt('Navigate Course Contents')."</title>");
# ------------------------------------------------------------ Get query string	# ------------------------------------------------------------ Get query string
&Apache::loncommon::get_unprocessed_cgi($ENV{'QUERY_STRING'},['register','sort']);	&Apache::loncommon::get_unprocessed_cgi($ENV{'QUERY_STRING'},['register','sort','showOnlyHomework','postsymb']);

# ----------------------------------------------------- Force menu registration	# ----------------------------------------------------- Force menu registration
my $addentries='';	my $addentries='';
my $more_unload;	my $more_unload;
if ($ENV{'environment.remotenavmap'} eq 'on') {	my $body_only='';
	if ($env{'environment.remotenavmap'} eq 'on') {
$r->print('<script type="text/javascript">	$r->print('<script type="text/javascript">
function collapse() {	function collapse() {
this.document.location="/adm/navmaps?collapseExternal";	this.document.location="/adm/navmaps?collapseExternal";
Line 208 ENDSUBM	Line 257 ENDSUBM
</script>');	</script>');
# FIXME need to be smarter to only catch window close events	# FIXME need to be smarter to only catch window close events
# $more_unload="collapse()"	# $more_unload="collapse()"
	$body_only=1;
}	}
if ($ENV{'form.register'}) {	if ($env{'form.register'}) {
$addentries=' onLoad="'.&Apache::lonmenu::loadevents().	$addentries=' onLoad="'.&Apache::lonmenu::loadevents().
'" onUnload="'.&Apache::lonmenu::unloadevents().';'.	'" onUnload="'.&Apache::lonmenu::unloadevents().';'.
$more_unload.'"';	$more_unload.'"';
Line 221 ENDSUBM	Line 271 ENDSUBM
# Header	# Header
$r->print('</head>'.	$r->print('</head>'.
&Apache::loncommon::bodytag('Navigate Course Contents','',	&Apache::loncommon::bodytag('Navigate Course Contents','',
$addentries,'','',$ENV{'form.register'}));	$addentries,$body_only,'',
$r->print('<script>window.focus();</script>'.	$env{'form.register'}));
&Apache::loncommon::help_open_menu('','Navigation Screen','Navigation_Screen','',undef,'RAT'));	$r->print('<script>window.focus();</script>');

$r->rflush();	$r->rflush();

# Check that it's defined	# Check that it's defined
if (!($navmap->courseMapDefined())) {	if (!($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>' .	$r->print('<font size="+2" color="red">Coursemap undefined.</font>' .
'</body></html>');	'</body></html>');
return OK;	return OK;
Line 252 ENDSUBM	Line 303 ENDSUBM
if ($sequenceCount == 1) {	if ($sequenceCount == 1) {
# The automatic iterator creation in the render call	# The automatic iterator creation in the render call
# will pick this up. We know the condition because	# will pick this up. We know the condition because
# the defined($ENV{'form.filter'}) also ensures this	# the defined($env{'form.filter'}) also ensures this
# is a fresh call.	# is a fresh call.
$ENV{'form.filter'} = "$sequenceId";	$env{'form.filter'} = "$sequenceId";
}	}
}	}

if ($ENV{QUERY_STRING} eq 'launchExternal') {	if ($ENV{QUERY_STRING} eq 'launchExternal') {
$r->print('	$r->print('
<form name="returnwin" action="/adm/flip?postdata=return%3a"	<form name="returnwin" action="/adm/flip?postdata=navlaunch%3a"
method="post" target="loncapaclient">	method="post" target="loncapaclient">
</form>');	</form>');
$r->print('	$r->print('
Line 269 ENDSUBM	Line 320 ENDSUBM
</script>');	</script>');
}	}

if ($ENV{'environment.remotenavmap'} ne 'on') {	if ($env{'environment.remotenavmap'} ne 'on') {
$r->print(&launch_win('link','yes'));	$r->print(&launch_win('link','yes',\%toplinkitems));
}	}
if ($ENV{'environment.remotenavmap'} eq 'on') {	if ($env{'environment.remotenavmap'} eq 'on') {
# $r->print("<a href='navmaps?collapseExternal'>" .	&add_linkitem(\%toplinkitems,'closenav','collapse()',
$r->print("<a href='javascript:collapse();void(0);'>" .	"Close navigation window");
&mt("Close external navmaps").
"</a>    ");
}	}

my $jumpToFirstHomework = 0;	my $jumpToFirstHomework = 0;
# Check to see if the student is jumping to next open, do-able problem	# Check to see if the student is jumping to next open, do-able problem
if ($ENV{QUERY_STRING} eq 'jumpToFirstHomework') {	if ($ENV{QUERY_STRING} =~ /^jumpToFirstHomework/) {
$jumpToFirstHomework = 1;	$jumpToFirstHomework = 1;
# Find the next homework problem that they can do.	# Find the next homework problem that they can do.
my $iterator = $navmap->getIterator(undef, undef, undef, 1);	my $iterator = $navmap->getIterator(undef, undef, undef, 1);
Line 301 ENDSUBM	Line 350 ENDSUBM
pop @$stack; # last resource in the stack is the problem	pop @$stack; # last resource in the stack is the problem
# itself, which we don't need in the map stack	# itself, which we don't need in the map stack
my @mapPcs = map {$_->map_pc()} @$stack;	my @mapPcs = map {$_->map_pc()} @$stack;
$ENV{'form.filter'} = join(',', @mapPcs);	$env{'form.filter'} = join(',', @mapPcs);

# Mark as both "here" and "jump"	# Mark as both "here" and "jump"
$ENV{'form.postsymb'} = $curRes->symb();	$env{'form.postsymb'} = $curRes->symb();
}	}
}	}
}	}
Line 314 ENDSUBM	Line 363 ENDSUBM
$r->print("<font size='+2'>All homework assignments have been completed.</font><br /><br />");	$r->print("<font size='+2'>All homework assignments have been completed.</font><br /><br />");
}	}
} else {	} else {
$r->print("<a href='navmaps?jumpToFirstHomework'>" .	&add_linkitem(\%toplinkitems,'firsthomework',
&mt("Go To My First Homework Problem")."</a>    ");	'location.href="navmaps?jumpToFirstHomework"',
	"Show Me My First Homework Problem");
}	}

my $suppressEmptySequences = 0;	my $suppressEmptySequences = 0;
Line 324 ENDSUBM	Line 374 ENDSUBM

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

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

# If no resources were printed, print a reassuring message so the	# If no resources were printed, print a reassuring message so the
# user knows there was no error.	# user knows there was no error.
Line 372 ENDSUBM	Line 431 ENDSUBM
$r->print("<p><font size='+1'>This course is empty.</font></p>");	$r->print("<p><font size='+1'>This course is empty.</font></p>");
}	}
}	}
	#my $td=&tv_interval($t0);
	#$r->print("<br />$td");

$r->print("</body></html>");	$r->print("</body></html>");
$r->rflush();	$r->rflush();
Line 402 sub removeFromFilter {	Line 463 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 410 sub getLinkForResource {	Line 470 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 = $_; } }
	$anchor=&Apache::lonnet::escape($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));	$anchor=&Apache::lonnet::escape($src->shown_symb());
	return ($url,$res->shown_symb(),$anchor);
}	}
}	}
}	}
Line 430 sub getLinkForResource {	Line 494 sub getLinkForResource {
if (defined($_)) { $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 451 sub getDescription {	Line 515 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 == $res->EXCUSED) {
Line 486 sub getDescription {	Line 551 sub getDescription {
}	}
}	}
if ($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 524 sub lastTry {	Line 589 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 539 sub advancedUser {	Line 604 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 611 sub timeToHumanString {	Line 679 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();
	}

# 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();
}	}

	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();
}	}

# Not this year, so show the year	# Not this year, so show the year
my $timeStr = strftime("on %A, %b %e %G at %I:%M %P", localtime($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();
}	}
}	}

Line 830 automatically.	Line 912 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 846 instruct the renderer to render only a p	Line 928 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 876 then only one line will be displayed for	Line 958 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 909 are allowing the user to open and close	Line 991 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 978 sub render_resource {	Line 1060 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 986 sub render_resource {	Line 1076 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.'/problem.gif" alt="'.&mt('Problem').'" 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 1019 sub render_resource {	Line 1112 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, $mapId) :
Line 1034 sub render_resource {	Line 1129 sub render_resource {
&Apache::lonnet::escape($params->{'here'}) .	&Apache::lonnet::escape($params->{'here'}) .
'&jump=' .	'&jump=' .
&Apache::lonnet::escape($resource->symb()) .	&Apache::lonnet::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 1047 sub render_resource {	Line 1144 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
Line 1062 sub render_resource {	Line 1162 sub render_resource {
}	}

# Decide what to display	# Decide what to display

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

my $curMarkerBegin = '';	my $curMarkerBegin = '';
Line 1070 sub render_resource {	Line 1171 sub render_resource {
# Is this the current resource?	# Is this the current resource?
if (!$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;
}	}

if ($resource->is_problem() && $part ne '0' &&	if ($resource->is_problem() && $part ne '0' &&
!$params->{'condensed'}) {	!$params->{'condensed'}) {
my $displaypart=&Apache::lonnet::EXT('resource.'.$part.'.display',	my $displaypart=$resource->part_display($part);
$resource->symb());	$partLabel = " (".&mt('Part: [_1]', $displaypart).")";
unless ($displaypart) { $displaypart=$part; }	if ($link!~/\#/) { $link.='#'.&Apache::lonnet::escape($part); }
$partLabel = " (Part: $displaypart)";
$link.='#'.&Apache::lonnet::escape($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 1107 sub render_communication_status {	Line 1206 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 = $linkopen .
'<img border="0" src="/adm/lonMisc/chat.gif" />' .	'<img border="0" src="'.$location.'/chat.gif" />' .
$linkclose;	$linkclose;
}	}

Line 1120 sub render_communication_status {	Line 1223 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($_) . '">'	. &Apache::lonnet::escape($_) . '">'
. '<img src="/adm/lonMisc/feedback.gif" '	. '<img src="'.$location.'/feedback.gif" '
. 'border="0" /></a>';	. 'border="0" /></a>';
}	}
}	}
Line 1135 sub render_communication_status {	Line 1238 sub render_communication_status {
last if ($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($_) . '">'	. &Apache::lonnet::escape($_) . '">'
. '<img src="/adm/lonMisc/bomb.gif" '	. '<img src="'.$location.'/bomb.gif" '
. 'border="0" /></a>';	. 'border="0" /></a>';
}	}
}	}
Line 1157 sub render_quick_status {	Line 1260 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 1166 sub render_quick_status {	Line 1273 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");
	$result .= "<td width='30' valign='center' width='50' align='right'>$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 1297 sub setDefault {	Line 1406 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 1329 sub render {	Line 1443 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 1349 sub render {	Line 1463 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 '<font color="red">'.&mt('No course selected').'</font><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);
} else {	}
&Apache::lonnet::logthis("Hrrm,");	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
Line 1385 sub render {	Line 1509 sub render {
# We only need to do this if we need to open the maps to show the	# We only need to do this if we need to open the maps to show the
# current position. This will change the counter so we can't count	# current position. This will change the counter so we can't count
# for the jump marker with this loop.	# for the jump marker with this loop.
while (($curRes = $mapIterator->next()) && !$found) {	while ($here && ($curRes = $mapIterator->next()) && !$found) {
if (ref($curRes) && $curRes->symb() eq $here) {	if (ref($curRes) && $curRes->symb() eq $here) {
my $mapStack = $mapIterator->getStack();	my $mapStack = $mapIterator->getStack();

Line 1402 sub render {	Line 1526 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 1461 sub render {	Line 1584 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 1485 sub render {	Line 1609 sub render {
}	}

if ($printCloseAll && !$args->{'resource_no_folder_link'}) {	if ($printCloseAll && !$args->{'resource_no_folder_link'}) {
	my ($link,$text);
if ($condition) {	if ($condition) {
$result.="<a href=\"navmaps?condition=0&filter=&$queryString" .	$link='"navmaps?condition=0&filter=&'.$queryString.
"&here=" . Apache::lonnet::escape($here) .	'&here='.&Apache::lonnet::escape($here).'"';
"\">".&mt('Close All Folders')."</a>";	$text='Close All Folders';
} else {	} else {
$result.="<a href=\"navmaps?condition=1&filter=&$queryString" .	$link='"navmaps?condition=1&filter=&'.$queryString.
"&here=" . Apache::lonnet::escape($here) .	'&here='.&Apache::lonnet::escape($here).'"';
"\">".&mt('Open All Folders')."</a>";	$text='Open All Folders';
}	}
	if ($args->{'caller'} eq 'navmapsdisplay') {
	&add_linkitem($args->{'linkitems'},'changefolder',
	'location.href='.$link,$text);
	} else {
	$result.='<a href='.$link.'>'.&mt($text).'</a>';
	}
$result .= "\n";	$result .= "\n";
}	}

# Check for any unread discussions in all resources.	# Check for any unread discussions in all resources.
if (!$args->{'resource_no_folder_link'}) {	if ($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) {	$haveDisc =~ s/:$//;
$haveDisc =~ s/:$//;	$result .= (<<END);
my %lt = &Apache::lonlocal::texthash(	<input type="hidden" name="navmaps" value="$haveDisc" />
'mapr' => 'Mark all posts read',	</form>
);
$result .= (<<END);
<a href="javascript:document.clearbubbles.submit()">$lt{'mapr'}</a> <a href="javascript:void(open('/adm/help/NavMaps_MarkPosts_Read.hlp', 'Help_for_NavMaps_MarkPosts', 'menubar=0,toolbar=1,scrollbars=1,width=350,height=400,resizable=yes'))" title="Online Help"><image src="/adm/help/gif/smallHelp.gif" border="0" alt="(Help: NavMaps_MarkPostsLink)" /></a>
<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') {
	$result .= '<table><tr><td>'.
	&Apache::loncommon::help_open_menu('','Navigation Screen','Navigation_Screen','',undef,'RAT').'</td>';
	if ($env{'environment.remotenavmap'} ne 'on') {
	$result .= '<td> </td>';
} else {	} else {
$result .= '<br />';	$result .= '</tr><tr>';
	}
	$result.=&show_linkitems($args->{'linkitems'});
	if ($args->{'sort_html'}) {
	if ($env{'environment.remotenavmap'} ne 'on') {
	$result.='<td> </td><td> </td><td> </td>'.
	'<td align="right">'.$args->{'sort_html'}.'</td></tr>';
	} else {
	$result.='</tr><tr><td align="left"><br />'.
	$args->{'sort_html'}.'</td></tr>';
	}
}	}
	$result .= '</table>';
	} elsif ($args->{'sort_html'}) {
	$result.=$args->{'sort_html'};
}	}

$result .= "<br />\n";	$result .= "<br />\n";
if ($r) {	if ($r) {
$r->print($result);	$r->print($result);
Line 1552 END	Line 1705 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 1605 END	Line 1760 END
my @resources;	my @resources;
my $code='';# sub { !(shift->is_map();) };	my $code='';# sub { !(shift->is_map();) };
if ($args->{'sort'} eq 'title') {	if ($args->{'sort'} eq 'title') {
@resources=$navmap->retrieveResources(undef,	my $oldFilterFunc = $filterFunc;
sub { !shift->is_map(); });	my $filterFunc=
@resources= sort {lc($a->compTitle) cmp lc($b->compTitle)} @resources;	sub {
	my ($res)=@_;
	if ($res->is_map()) { return 0;}
	return &$oldFilterFunc($res);
	};
	@resources=$navmap->retrieveResources(undef,$filterFunc);
	@resources= sort { &cmp_title($a,$b) } @resources;
} elsif ($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,$b) } @resources;
	} else {
	#unknow sort mechanism or default
	undef($args->{'sort'});
}	}


while (1) {	while (1) {
if ($args->{'sort'}) {	if ($args->{'sort'}) {
$curRes = shift(@resources);	$curRes = shift(@resources);
Line 1678 END	Line 1860 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 1731 END	Line 1909 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=' . &Apache::lonnet::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 1742 END	Line 1939 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 1824 if (location.href.indexOf('#curloc')==-1	Line 2005 if (location.href.indexOf('#curloc')==-1
$r->rflush();	$r->rflush();
}	}

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

	sub add_linkitem {
	my ($linkitems,$name,$cmd,$text)=@_;
	$$linkitems{$name}{'cmd'}=$cmd;
	$$linkitems{$name}{'text'}=&mt($text);
	}

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

	my $result .= (<<ENDBLOCK);
	<td align="left">
	<script type="text/javascript">
	function changeNavDisplay () {
	var navchoice = document.linkitems.toplink[document.linkitems.toplink.selectedIndex].value;
	ENDBLOCK
	foreach my $link (@linkorder) {
	$result.= "if (navchoice == '$link') {".
	$linkitems->{$link}{'cmd'}."}\n";
	}
	$result.='}
	</script>
	<form name="linkitems" method="post">
	<nobr><select name="toplink">'."\n";
	foreach my $link (@linkorder) {
	if (defined($linkitems->{$link})) {
	if ($linkitems->{$link}{'text'} ne '') {
	$result .= ' <option value="'.$link.'">'.
	$linkitems->{$link}{'text'}."</option>\n";
	}
	}
	}
	$result .= '</select> <input type="button" name="chgnav"
	value="Go" onClick="javascript:changeNavDisplay()" />
	</nobr></form></td>'."\n";

return $result;	return $result;
}	}

Line 1848 In order of increasing complexity and po	Line 2067 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 1886 successful, or B<undef> if not.	Line 2106 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 1902 See iterator documentation below.	Line 2118 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 1921 sub new {	Line 2138 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 1947 sub generate_course_user_opt {	Line 2164 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 2007 sub generate_email_discuss_status {	Line 2204 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 2028 sub generate_email_discuss_status {	Line 2226 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')) {
my $plain=&Apache::lonnet::unescape(&Apache::lonnet::unescape($msgid));	my $plain=
if ($plain=~/(Error\|Feedback) \[([^\]]+)\]/) {	&Apache::lonnet::unescape(&Apache::lonnet::unescape($msgid));
my ($what,$url)=($1,$2);	if ($plain=~/ \[([^\]]+)\]\:/) {
my %status=	my $url=$1;
&Apache::lonnet::get('email_status',[$msgid]);	if ($plain=~/\:Error \[/) {
if ($status{$msgid}=~/^error\:/) {
$status{$msgid}='';
}

if (($status{$msgid} eq 'new') \|\|
(!$status{$msgid})) {
if ($what eq 'Error') {
$error{$url}.=','.$msgid;	$error{$url}.=','.$msgid;
} else {	} else {
$feedback{$url}.=','.$msgid;	$feedback{$url}.=','.$msgid;
Line 2055 sub generate_email_discuss_status {	Line 2244 sub generate_email_discuss_status {
}	}
}	}

	#url's of resources that have feedbacks
$self->{FEEDBACK} = \%feedback;	$self->{FEEDBACK} = \%feedback;
$self->{ERROR_MSG} = \%error; # what is this? JB	#or errors
	$self->{ERROR_MSG} = \%error;
$self->{DISCUSSION_TIME} = \%discussiontime;	$self->{DISCUSSION_TIME} = \%discussiontime;
$self->{EMAIL_STATUS} = \%emailstatus;	$self->{EMAIL_STATUS} = \%emailstatus;
$self->{LAST_READ} = \%lastreadtime;	$self->{LAST_READ} = \%lastreadtime;
Line 2069 sub get_user_data {	Line 2260 sub get_user_data {
if ($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.'.$cid.'.num'};
	# Retrieve discussion data for resources in course
	my %discussion_data = &Apache::lonnet::dump($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 2096 sub navhash {	Line 2308 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 2106 sub courseMapDefined {	Line 2318 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 2145 sub hasDiscussion {	Line 2344 sub hasDiscussion {
}	}
}	}

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

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

	$self->get_discussion_data();

	my $ressymb = $self->wrap_symb($symb);

	my $version = $self->{DISCUSSION_DATA}{'version:'.$ressymb};
	if (!$version) { return; }

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

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

	my %subjects;

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

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

# 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 2213 sub getById {	Line 2479 sub getById {
sub getBySymb {	sub getBySymb {
my $self = shift;	my $self = shift;
my $symb = shift;	my $symb = shift;

my ($mapUrl, $id, $filename) = &Apache::lonnet::decode_symb($symb);	my ($mapUrl, $id, $filename) = &Apache::lonnet::decode_symb($symb);
my $map = $self->getResourceByUrl($mapUrl);	my $map = $self->getResourceByUrl($mapUrl);
return $self->getById($map->map_pc() . '.' . $id);	my $returnvalue = undef;
	if (ref($map)) {
	$returnvalue = $self->getById($map->map_pc() .'.'.$id);
	}
	return $returnvalue;
}	}

sub getByMapPc {	sub getByMapPc {
Line 2238 resource in the navmap.	Line 2509 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 2254 in the navmap.	Line 2525 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 2281 sub parmval_real {	Line 2552 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='';
Line 2298 sub parmval_real {	Line 2575 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 2320 sub parmval_real {	Line 2601 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 2328 sub parmval_real {	Line 2615 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 2346 sub parmval_real {	Line 2631 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 2366 sub parmval_real {	Line 2657 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 2383 function that takes a resource object as	Line 2677 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 2398 want to know is if I<any> resources matc	Line 2693 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 2435 sub retrieveResources {	Line 2750 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 2454 sub retrieveResources {	Line 2769 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 2484 sub hasResource {	Line 2799 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 2631 sub new {	Line 2955 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 2751 sub new {	Line 3075 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 2914 sub next {	Line 3239 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 2967 sub populateStack {	Line 3294 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 2995 sub new {	Line 3324 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 3149 sub populateStack {	Line 3478 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 3231 sub new {	Line 3560 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 3319 Returns the title of the resource.	Line 3648 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 3330 sub randompick {	Line 3660 sub randompick {
return $self->{NAV_MAP}->{PARM_HASH}->{$self->symb .	return $self->{NAV_MAP}->{PARM_HASH}->{$self->symb .
'.0.parameter_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 3342 sub symb {	Line 3691 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 3414 sub is_page {	Line 3788 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 3444 sub is_survey {	Line 3829 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 3633 sub duedate {	Line 4023 sub duedate {
}	}
return $self->parmval("duedate", $part);	return $self->parmval("duedate", $part);
}	}
	sub handgrade {
	(my $self, my $part) = @_;
	return $self->parmval("handgrade", $part);
	}
sub maxtries {	sub maxtries {
(my $self, my $part) = @_;	(my $self, my $part) = @_;
return $self->parmval("maxtries", $part);	return $self->parmval("maxtries", $part);
Line 3671 sub weight {	Line 4065 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 {
	my $self= shift(); my $partID = shift();
	if (! defined($partID)) { $partID = '0'; }
	my $display=&Apache::lonnet::EXT('resource.'.$partID.'.display',
	$self->symb);
	if (! defined($display) \|\| $display eq '') {
	$display = $partID;
	}
	return $display;
}	}

# Multiple things need this	# Multiple things need this
Line 3715 Returns a false value if there has been	Line 4118 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<unread_discussion>:

	returns in scalar context the count of the number of unread discussion
	postings

	returns in list context both the count of postings and a hash ref
	containing the subjects of all 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 3735 sub hasDiscussion {	Line 4151 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 unread_discussion {
	my $self = shift;
	return $self->{NAV_MAP}->unread_discussion($self->symb());
	}

sub getFeedback {	sub getFeedback {
my $self = shift;	my $self = shift;
my $source = $self->src();	my $source = $self->src();
Line 3764 Returns the number of parts of the probl	Line 4190 Returns the number of parts of the probl
for single part problems, returns 1. For multipart, it returns the	for single part problems, returns 1. For multipart, it returns the
number of parts in the problem, not including psuedo-part 0.	number of parts in the problem, not including psuedo-part 0.

	=item * B<countResponses>():

	Returns the total number of responses in the problem a student can answer.

	=item * B<responseTypes>():

	Returns a hash whose keys are the response types. The values are the number
	of times each response type is used. This is for the I<entire> problem, not
	just a single part.

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

Returns true if the problem is multipart, false otherwise. Use this instead	Returns true if the problem is multipart, false otherwise. Use this instead
Line 3810 sub countParts {	Line 4246 sub countParts {
return scalar(@{$parts}); # + $delta;	return scalar(@{$parts}); # + $delta;
}	}

	sub countResponses {
	my $self = shift;
	my $count;
	foreach my $part (@{$self->parts()}) {
	$count+= scalar($self->responseIds($part));
	}
	return $count;
	}

	sub responseTypes {
	my $self = shift;
	my %responses;
	foreach my $part ($self->parts()) {
	foreach my $responsetype ($self->responseType($part)) {
	$responses{$responsetype}++ if (defined($responsetype));
	}
	}
	return %responses;
	}

sub multipart {	sub multipart {
my $self = shift;	my $self = shift;
return $self->countParts() > 1;	return $self->countParts() > 1;
Line 3878 sub extractParts {	Line 4334 sub extractParts {
return;	return;
}	}
foreach (split(/\,/,$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 3897 sub extractParts {	Line 4353 sub extractParts {
}	}


	# These hashes probably do not need names that end with "Hash"....
my %responseIdHash;	my %responseIdHash;
my %responseTypeHash;	my %responseTypeHash;

Line 3913 sub extractParts {	Line 4370 sub extractParts {
# 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 (split /,/, $metadata) {
if ($_ =~ /^([a-zA-Z]+)response_(.*)/) {	if ($_ =~ /^([a-zA-Z]+)response_(.*)/
	\|\| $_ =~ /^(Task)_(.*)/) {
my $responseType = $1;	my $responseType = $1;
my $partStuff = $2;	my $partStuff = $2;
my $partIdSoFar = '';	my $partIdSoFar = '';
Line 3932 sub extractParts {	Line 4390 sub extractParts {
}	}
}	}
my $resorder = &Apache::lonnet::metadata($self->src(),'responseorder');	my $resorder = &Apache::lonnet::metadata($self->src(),'responseorder');
	#
	# Reorder the arrays in the %responseIdHash and %responseTypeHash
if ($resorder) {	if ($resorder) {
my @resorder=split(/,/,$resorder);	my @resorder=split(/,/,$resorder);
foreach my $part (keys(%responseIdHash)) {	foreach my $part (keys(%responseIdHash)) {
my %resids = map { ($_,1) } @{ $responseIdHash{$part} };	my $i=0;
	my %resids = map { ($_,$i++) } @{ $responseIdHash{$part} };
my @neworder;	my @neworder;
foreach my $possibleid (@resorder) {	foreach my $possibleid (@resorder) {
if (exists($resids{$possibleid})) {	if (exists($resids{$possibleid})) {
push(@neworder,$possibleid);	push(@neworder,$resids{$possibleid});
}	}
}	}
$responseIdHash{$part}=\@neworder;	my @ids;
	my @type;
	foreach my $element (@neworder) {
	push (@ids,$responseIdHash{$part}->[$element]);
	push (@type,$responseTypeHash{$part}->[$element]);
	}
	$responseIdHash{$part}=\@ids;
	$responseTypeHash{$part}=\@type;
}	}
}	}
$self->{RESPONSE_IDS} = \%responseIdHash;	$self->{RESPONSE_IDS} = \%responseIdHash;
Line 4132 sub ATTEMPTED { return 16; }	Line 4600 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_override') {return $self->CORRECT_BY_OVERRIDE; }	if ($status eq 'correct_by_scantron') {return $self->CORRECT;}
	if ($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 4242 An answer has been submitted, but the st	Line 4714 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 4260 sub status {	Line 4733 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 4288 sub status {	Line 4776 sub status {

if ($dateStatus == PAST_DUE_ANSWER_LATER \|\|	if ($dateStatus == PAST_DUE_ANSWER_LATER \|\|
$dateStatus == PAST_DUE_NO_ANSWER ) {	$dateStatus == PAST_DUE_NO_ANSWER ) {
return $suppressFeedback ? ANSWER_SUBMITTED ? $dateStatus;	return $suppressFeedback ? ANSWER_SUBMITTED : $dateStatus;
}	}

if ($dateStatus == ANSWER_OPEN) {	if ($dateStatus == ANSWER_OPEN) {
Line 4354 my %compositeToSimple =	Line 4842 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 4474 sub getNext {	Line 4963 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 4502 sub browsePriv {	Line 4992 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

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Removed from v.1.271
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	Added in v.1.366