loncom/interface/lonnavmaps.pm - diff

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Diff for /loncom/interface/lonnavmaps.pm between versions 1.219.2.1 and 1.371

version 1.219.2.1, 2003/08/21 18:29:54	version 1.371, 2006/03/16 20:48:30
Line 25	Line 25
#	#
# http://www.lon-capa.org/	# http://www.lon-capa.org/
#	#
# (Page Handler	###
#
# (TeX Content Handler
#
# 05/29/00,05/30 Gerd Kortemeyer)
# 08/30,08/31,09/06,09/14,09/15,09/16,09/19,09/20,09/21,09/23,
# 10/02,10/10,10/14,10/16,10/18,10/19,10/31,11/6,11/14,11/16 Gerd Kortemeyer)
#
# 3/1/1,6/1,17/1,29/1,30/1,2/8,9/21,9/24,9/25 Gerd Kortemeyer
# YEAR=2002
# 1/1 Gerd Kortemeyer
# Oct-Nov Jeremy Bowers
# YEAR=2003
# Jeremy Bowers ... lots of days

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::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 61 my $resObj = "Apache::lonnavmaps::resour	Line 53 my $resObj = "Apache::lonnavmaps::resour
# Keep these mappings in sync with lonquickgrades, which uses the colors	# Keep these mappings in sync with lonquickgrades, which uses the colors
# instead of the icons.	# instead of the icons.
my %statusIconMap =	my %statusIconMap =
( $resObj->NETWORK_FAILURE => '',	(
$resObj->NOTHING_SET => '',	$resObj->CLOSED => '',
$resObj->CORRECT => 'navmap.correct.gif',	$resObj->OPEN => 'navmap.open.gif',
$resObj->EXCUSED => 'navmap.correct.gif',	$resObj->CORRECT => 'navmap.correct.gif',
$resObj->PAST_DUE_NO_ANSWER => 'navmap.wrong.gif',	$resObj->PARTIALLY_CORRECT => 'navmap.partial.gif',
$resObj->PAST_DUE_ANSWER_LATER => 'navmap.wrong.gif',	$resObj->INCORRECT => 'navmap.wrong.gif',
$resObj->ANSWER_OPEN => 'navmap.wrong.gif',	$resObj->ATTEMPTED => 'navmap.ellipsis.gif',
$resObj->OPEN_LATER => '',	$resObj->ERROR => ''
$resObj->TRIES_LEFT => 'navmap.open.gif',	);
$resObj->INCORRECT => 'navmap.wrong.gif',
$resObj->OPEN => 'navmap.open.gif',
$resObj->ATTEMPTED => 'navmap.ellipsis.gif',
$resObj->ANSWER_SUBMITTED => 'navmap.ellipsis.gif' );

my %iconAltTags =	my %iconAltTags =
( 'navmap.correct.gif' => 'Correct',	( 'navmap.correct.gif' => 'Correct',
Line 94 my %colormap =	Line 82 my %colormap =
$resObj->OPEN => '',	$resObj->OPEN => '',
$resObj->NOTHING_SET => '',	$resObj->NOTHING_SET => '',
$resObj->ATTEMPTED => '',	$resObj->ATTEMPTED => '',
$resObj->ANSWER_SUBMITTED => ''	$resObj->ANSWER_SUBMITTED => '',
	$resObj->PARTIALLY_CORRECT => '#006600'
);	);
# And a special case in the nav map; what to do when the assignment	# And a special case in the nav map; what to do when the assignment
# is not yet done and due in less then 24 hours	# is not yet done and due in less then 24 hours
my $hurryUpColor = "#FF0000";	my $hurryUpColor = "#FF0000";

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

	sub close {
	if ($env{'environment.remotenavmap'} ne 'on') { return ''; }
	return(<<ENDCLOSE);
	<script type="text/javascript">
	window.status='Accessing Nav Control';
	menu=window.open("/adm/rat/empty.html","loncapanav",
	"height=600,width=400,scrollbars=1");
	window.status='Closing Nav Control';
	menu.close();
	window.status='Done.';
	</script>
	ENDCLOSE
	}

	sub update {
	if ($env{'environment.remotenavmap'} ne 'on') { return ''; }
	if (!$env{'request.course.id'}) { return ''; }
	if ($ENV{'REQUEST_URI'}=~m\|^/adm/navmaps\|) { return ''; }
	return(<<ENDUPDATE);
	<form name="navform"></form>
	<script type="text/javascript">
	this.document.navform.action='/adm/navmaps#curloc';
	this.document.navform.target='loncapanav';
	this.document.navform.submit();
	</script>
	ENDUPDATE
	}

sub handler {	sub handler {
my $r = shift;	my $r = shift;
real_handler($r);	real_handler($r);
Line 107 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'}) {
$r->content_type('text/xml');	&Apache::loncommon::content_type($r,'text/xml');
} else {	} else {
$r->content_type('text/html');	&Apache::loncommon::content_type($r,'text/html');
}	}
$r->send_http_header;	$r->send_http_header;
return OK;	return OK;
}	}

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

# Create the nav map	my %toplinkitems=();
my $navmap = Apache::lonnavmaps::navmap->new(	&add_linkitem(\%toplinkitems,'blank','',"Select Action");
$ENV{"request.course.fn"}.".db",	if ($ENV{QUERY_STRING} eq 'collapseExternal') {
$ENV{"request.course.fn"}."_parms.db", 1, 1);	&Apache::lonnet::put('environment',{'remotenavmap' => 'off'});
	&Apache::lonnet::appenv('environment.remotenavmap' => 'off');
	my $menu=&Apache::lonmenu::reopenmenu();
	my $navstatus=&Apache::lonmenu::get_nav_status();
	if ($menu) {
	$menu=(<<MENU)
	swmenu=$menu
	swmenu.clearTimeout(swmenu.menucltim);
	$navstatus
	MENU
	} else {
	my $nothing = &Apache::lonhtmlcommon::javascript_nothing();
	my $mainwindow='window.open('.$nothing.',"loncapaclient","",false);';
	$menu=(<<MENU)
	swmenu=$mainwindow
	$navstatus
	MENU
	}
	$r->send_http_header;
	my $js =<<"ENDSUBM";
	<script type="text/javascript">
	function submitthis() {
	$menu
	self.close();
	}

	</script>
	ENDSUBM
	$r->print(&Apache::lonxml::xmlbegin().
	&Apache::loncommon::head(undef,$js).
	'<body bgcolor="#FFFFFF" onLoad="submitthis()">'.
	&Apache::loncommon::end_page(undef,$js));

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

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

if (!defined($navmap)) {	if (!defined($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");
$r->print("<title>Navigate Course Contents</title>");
# ------------------------------------------------------------ Get query string	# ------------------------------------------------------------ Get query string
&Apache::loncommon::get_unprocessed_cgi($ENV{'QUERY_STRING'},['register']);	&Apache::loncommon::get_unprocessed_cgi($ENV{'QUERY_STRING'},['register','sort','showOnlyHomework','postsymb']);

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

# Header	# Header
$r->print('</head>'.	$r->print(&Apache::lonxml::xmlbegin().
	&Apache::loncommon::head('Navigate Course Contents',$js).
&Apache::loncommon::bodytag('Navigate Course Contents','',	&Apache::loncommon::bodytag('Navigate Course Contents','',
$addentries,'','',$ENV{'form.register'}));	$addentries,$body_only,'',
	$env{'form.register'}));
$r->print('<script>window.focus();</script>');	$r->print('<script>window.focus();</script>');

$r->rflush();

# Now that we've displayed some stuff to the user, init the navmap
$navmap->init();

$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>');	&Apache::loncommon::end_page());
return OK;	return OK;
}	}

# See if there's only one map in the top-level, if we don't	# See if there's only one map in the top-level, if we don't
# already have a filter... if so, automatically display it	# already have a filter... if so, automatically display it
	# (older code; should use retrieveResources)
if ($ENV{QUERY_STRING} !~ /filter/) {	if ($ENV{QUERY_STRING} !~ /filter/) {
my $iterator = $navmap->getIterator(undef, undef, undef, 0);	my $iterator = $navmap->getIterator(undef, undef, undef, 0);
my $depth = 1;	my $curRes;
$iterator->next();
my $curRes = $iterator->next();
my $sequenceCount = 0;	my $sequenceCount = 0;
my $sequenceId;	my $sequenceId;
while ($depth > 0) {	while ($curRes = $iterator->next()) {
if ($curRes == $iterator->BEGIN_MAP()) { $depth++; }
if ($curRes == $iterator->END_MAP()) { $depth--; }

if (ref($curRes) && $curRes->is_sequence()) {	if (ref($curRes) && $curRes->is_sequence()) {
$sequenceCount++;	$sequenceCount++;
$sequenceId = $curRes->map_pc();	$sequenceId = $curRes->map_pc();
}	}

$curRes = $iterator->next();
}	}

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

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

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);
my $depth = 1;	my $curRes;
$iterator->next();
my $curRes = $iterator->next();
my $foundDoableProblem = 0;	my $foundDoableProblem = 0;
my $problemRes;	my $problemRes;

while ($depth > 0 && !$foundDoableProblem) {	while (($curRes = $iterator->next()) && !$foundDoableProblem) {
if ($curRes == $iterator->BEGIN_MAP()) { $depth++; }
if ($curRes == $iterator->END_MAP()) { $depth--; }

if (ref($curRes) && $curRes->is_problem()) {	if (ref($curRes) && $curRes->is_problem()) {
my $status = $curRes->status();	my $status = $curRes->status();
if ($curRes->completable()) {	if ($curRes->completable()) {
Line 230 sub real_handler {	Line 349 sub real_handler {
pop @$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();
}	}
}	}
} continue {
$curRes = $iterator->next();
}	}

# If we found no problems, print a note to that effect.	# If we found no problems, print a note to that effect.
Line 245 sub real_handler {	Line 362 sub real_handler {
$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',
"Go To My First Homework Problem</a>    ");	'location.href="navmaps?jumpToFirstHomework"',
	"Show Me My First Homework Problem");
}	}

my $suppressEmptySequences = 0;	my $suppressEmptySequences = 0;
Line 255 sub real_handler {	Line 373 sub real_handler {

# 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();
};	};
$r->print("<p><font size='+2'>Uncompleted Homework</font></p>");	&add_linkitem(\%toplinkitems,'everything',
$ENV{'form.filter'} = '';	'location.href="navmaps?sort='.$env{'form.sort'}.'"',
$ENV{'form.condition'} = 1;	"Show Everything");
	$r->print("<p><font size='+2'>".&mt("Uncompleted Homework")."</font></p>");
	$env{'form.filter'} = '';
	$env{'form.condition'} = 1;
$resource_no_folder_link = 1;	$resource_no_folder_link = 1;
} else {	} else {
$r->print("<a href='navmaps?showOnlyHomework'>" .	&add_linkitem(\%toplinkitems,'uncompleted',
"Show Only Uncompleted Homework</a>    ");	'location.href="navmaps?sort='.$env{'form.sort'}.
}	'&showOnlyHomework=1"',
	"Show Only Uncompleted Homework");
	}

	my %selected=($env{'form.sort'} => 'selected=on');
	my $sort_html=("<form>
	<nobr>
	<input type=\"hidden\" name=\"showOnlyHomework\" value=\"".$env{'form.showOnlyHomework'}."\" />
	<input type=\"submit\" value=\"".&mt('Sort by:')."\" />
	<select name=\"sort\">
	<option value=\"default\" $selected{'default'}>".&mt('Default')."</option>
	<option value=\"title\" $selected{'title'} >".&mt('Title')."</option>
	<option value=\"duedate\" $selected{'duedate'}>".&mt('Duedate')."</option>
	<option value=\"discussion\" $selected{'discussion'}>".&mt('Has New Discussion')."</option>
	</select>
	</nobr>
	</form>");
# renderer call	# renderer call
my $renderArgs = { 'cols' => [0,1,2,3],	my $renderArgs = { 'cols' => [0,1,2,3],
	'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.
if ($renderArgs->{'counter'} == 0) {	if ($renderArgs->{'counter'} == 0) {
if ($showOnlyHomework) {	if ($showOnlyHomework) {
$r->print("<p><font size='+1'>All homework is currently completed.</font></p>");	$r->print("<p><font size='+1'>".&mt("All homework is currently completed").".</font></p>");
} else { # both jumpToFirstHomework and normal use the same: course must be empty	} else { # both jumpToFirstHomework and normal use the same: course must be empty
$r->print("<p><font size='+1'>This course is empty.</font></p>");	$r->print("<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(&Apache::loncommon::end_page());
$r->rflush();	$r->rflush();

return OK;	return OK;
Line 321 sub removeFromFilter {	Line 462 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;

# 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) && $res->is_page()) {	if (defined($res)) {
return $res->src();	my $anchor;
	if ($res->is_page()) {
	foreach (@$stack) { if (defined($_)) { $anchor = $_; } }
	$anchor=&Apache::lonnet::escape($anchor->shown_symb());
	return ($res->link(),$res->shown_symb(),$anchor);
	}
	# in case folder was skipped over as "only sequence"
	my ($map,$id,$src)=&Apache::lonnet::decode_symb($res->symb());
	if ($map=~/\.page$/) {
	my $url=&Apache::lonnet::clutter($map);
	$anchor=&Apache::lonnet::escape($src->shown_symb());
	return ($url,$res->shown_symb(),$anchor);
	}
}	}
}	}

Line 341 sub getLinkForResource {	Line 493 sub getLinkForResource {
if (defined($_)) { $res = $_; }	if (defined($_)) { $res = $_; }
}	}

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

# Convenience function: This seperates the logic of how to create	# Convenience function: This separates the logic of how to create
# the problem text strings ("Due: DATE", "Open: DATE", "Not yet assigned",	# the problem text strings ("Due: DATE", "Open: DATE", "Not yet assigned",
# etc.) into a seperate function. It takes a resource object as the	# etc.) into a separate function. It takes a resource object as the
# first parameter, and the part number of the resource as the second.	# first parameter, and the part number of the resource as the second.
# It's basically a big switch statement on the status of the resource.	# It's basically a big switch statement on the status of the resource.

Line 356 sub getDescription {	Line 508 sub getDescription {
my $status = $res->status($part);	my $status = $res->status($part);

if ($status == $res->NETWORK_FAILURE) {	if ($status == $res->NETWORK_FAILURE) {
return "Having technical difficulties; please check status later";	return &mt("Having technical difficulties; please check status later");
}	}
if ($status == $res->NOTHING_SET) {	if ($status == $res->NOTHING_SET) {
return "Not currently assigned.";	return &mt("Not currently assigned.");
}	}
if ($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($part)) {
return "Due " . timeToHumanString($res->duedate($part));	return &mt("Due")." " .timeToHumanString($res->duedate($part),'end');
} else {	} else {
return "Open, no due date";	return &mt("Open, no due date");
}	}
}	}
if ($status == $res->PAST_DUE_ANSWER_LATER) {	if ($status == $res->PAST_DUE_ANSWER_LATER) {
return "Answer open " . timeToHumanString($res->answerdate($part));	return &mt("Answer open")." " . timeToHumanString($res->answerdate($part),'start');
}	}
if ($status == $res->PAST_DUE_NO_ANSWER) {	if ($status == $res->PAST_DUE_NO_ANSWER) {
return "Was due " . timeToHumanString($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)
return "Answer available";	&& $res->handgrade($part) ne 'yes') {
	return &mt("Answer available");
}	}
if ($status == $res->EXCUSED) {	if ($status == $res->EXCUSED) {
return "Excused by instructor";	return &mt("Excused by instructor");
}	}
if ($status == $res->ATTEMPTED) {	if ($status == $res->ATTEMPTED) {
return "Answer submitted, not yet graded.";	return &mt("Answer submitted, not yet graded");
}	}
if ($status == $res->TRIES_LEFT) {	if ($status == $res->TRIES_LEFT) {
my $tries = $res->tries($part);	my $tries = $res->tries($part);
Line 396 sub getDescription {	Line 549 sub getDescription {
$triesString = "<b>$triesString</b>";	$triesString = "<b>$triesString</b>";
}	}
}	}
if ($res->duedate()) {	if ($res->duedate($part)) {
return "Due " . timeToHumanString($res->duedate($part)) .	return &mt("Due")." " . timeToHumanString($res->duedate($part),'end') .
" $triesString";	" $triesString";
} else {	} else {
return "No due date $triesString";	return &mt("No due date")." $triesString";
}	}
}	}
if ($status == $res->ANSWER_SUBMITTED) {	if ($status == $res->ANSWER_SUBMITTED) {
return 'Answer submitted';	return &mt('Answer submitted');
}	}
}	}

# Convenience function, so others can use it: Is the problem due in less then	# Convenience function, so others can use it: Is the problem due in less then
# 24 hours, and still can be done?	# 24 hours, and still can be done?

sub dueInLessThen24Hours {	sub dueInLessThan24Hours {
my $res = shift;	my $res = shift;
my $part = shift;	my $part = shift;
my $status = $res->status($part);	my $status = $res->status($part);

return ($status == $res->OPEN() \|\|	return ($status == $res->OPEN() \|\|
$status == $res->TRIES_LEFT()) &&	$status == $res->TRIES_LEFT()) &&
$res->duedate() && $res->duedate() < time()+(246060) &&	$res->duedate($part) && $res->duedate($part) < time()+(246060) &&
$res->duedate() > time();	$res->duedate($part) > time();
}	}

# Convenience function, so others can use it: Is there only one try remaining for the	# Convenience function, so others can use it: Is there only one try remaining for the
Line 431 sub lastTry {	Line 584 sub lastTry {
my $tries = $res->tries($part);	my $tries = $res->tries($part);
my $maxtries = $res->maxtries($part);	my $maxtries = $res->maxtries($part);
return $tries && $maxtries && $maxtries > 1 &&	return $tries && $maxtries && $maxtries > 1 &&
$maxtries - $tries == 1 && $res->duedate() &&	$maxtries - $tries == 1 && $res->duedate($part) &&
$res->duedate() > 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 450 sub advancedUser {	Line 603 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 'never';	return &mt('never');
}	}
	unless (&Apache::lonlocal::current_language()=~/^en/) {
	return &Apache::lonlocal::locallocaltime($time);
	}
my $now = time();	my $now = time();

my @time = localtime($time);	my @time = localtime($time);
Line 520 sub timeToHumanString {	Line 678 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/midnight/;	$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/midnight/;	$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/midnight/;	$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 680 can't close or open folders when this is	Line 852 can't close or open folders when this is

=back	=back

=item B<Apache::lonnavmaps::communication_status>:	=item * B<Apache::lonnavmaps::communication_status>:

Whether there is discussion on the resource, email for the user, or	Whether there is discussion on the resource, email for the user, or
(lumped in here) perl errors in the execution of the problem. This is	(lumped in here) perl errors in the execution of the problem. This is
the second column in the main nav map.	the second column in the main nav map.

=item B<Apache::lonnavmaps::quick_status>:	=item * B<Apache::lonnavmaps::quick_status>:

An icon for the status of a problem, with five possible states:	An icon for the status of a problem, with five possible states:
Correct, incorrect, open, awaiting grading (for a problem where the	Correct, incorrect, open, awaiting grading (for a problem where the
Line 694 computer's grade is suppressed, or the c	Line 866 computer's grade is suppressed, or the c
essay problem), or none (not open yet, not a problem). The	essay problem), or none (not open yet, not a problem). The
third column of the standard navmap.	third column of the standard navmap.

=item B<Apache::lonnavmaps::long_status>:	=item * B<Apache::lonnavmaps::long_status>:

A text readout of the details of the current status of the problem,	A text readout of the details of the current status of the problem,
such as "Due in 22 hours". The fourth column of the standard navmap.	such as "Due in 22 hours". The fourth column of the standard navmap.

	=item * B<Apache::lonnavmaps::part_status_summary>:

	A text readout summarizing the status of the problem. If it is a
	single part problem, will display "Correct", "Incorrect",
	"Not yet open", "Open", "Attempted", or "Error". If there are
	multiple parts, this will output a string that in HTML will show a
	status of how many parts are in each status, in color coding, trying
	to match the colors of the icons within reason.

	Note this only makes sense if you are I<not> showing parts. If
	C<showParts> is true (see below), this column will not output
	anything.

=back	=back

If you add any others please be sure to document them here.	If you add any others please be sure to document them here.
Line 726 automatically.	Line 911 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 742 instruct the renderer to render only a p	Line 927 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 772 then only one line will be displayed for	Line 957 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 805 are allowing the user to open and close	Line 990 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 866 sub resource { return 0; }	Line 1051 sub resource { return 0; }
sub communication_status { return 1; }	sub communication_status { return 1; }
sub quick_status { return 2; }	sub quick_status { return 2; }
sub long_status { return 3; }	sub long_status { return 3; }
	sub part_status_summary { return 4; }
# Data for render_resource

sub render_resource {	sub render_resource {
my ($resource, $part, $params) = @_;	my ($resource, $part, $params) = @_;
Line 875 sub render_resource {	Line 1059 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};

my $title = $resource->compTitle();	my $title = $resource->compTitle();
if ($src =~ /^\/uploaded\//) {
$nonLinkedText=$title;
$title = '';
}
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 {
my $curfext= (split (/\./,$resource->src))[-1];	$icon = "<img src='".&Apache::loncommon::icon($resource->src)."' alt='  ' border='0' />";
my $embstyle = &Apache::loncommon::fileembstyle($curfext);
# The unless conditional that follows is a bit of overkill
if (!(!defined($embstyle) \|\| $embstyle eq 'unk' \|\| $embstyle eq 'hdn')) {
$icon = "<img src='/adm/lonIcons/$curfext.gif' alt='' border='0' />";
}
}	}

# Display the correct map icon to open or shut map	# Display the correct map icon to open or shut map
Line 923 sub render_resource {	Line 1111 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, $mapId) :
Line 938 sub render_resource {	Line 1128 sub render_resource {
&Apache::lonnet::escape($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 951 sub render_resource {	Line 1143 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 966 sub render_resource {	Line 1161 sub render_resource {
}	}

# Decide what to display	# Decide what to display

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

my $curMarkerBegin = '';	my $curMarkerBegin = '';
Line 974 sub render_resource {	Line 1170 sub render_resource {
# Is this the current resource?	# Is this the current resource?
if (!$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'}) {
$partLabel = " (Part $part)";	my $displaypart=$resource->part_display($part);
	$partLabel = " (".&mt('Part: [_1]', $displaypart).")";
	if ($link!~/\#/) { $link.='#'.&Apache::lonnet::escape($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()).')';
}	}

if (!$params->{'resource_nolink'} && $src !~ /^\/uploaded\// &&	my $target;
!$resource->is_sequence()) {	if ($env{'environment.remotenavmap'} eq 'on') {
$result .= " $curMarkerBegin<a href='$link'>$title$partLabel</a>$curMarkerEnd $nonLinkedText</td>";	$target=' target="loncapaclient" ';
	}
	if (!$params->{'resource_nolink'} && !$resource->is_sequence() && !$resource->is_empty_sequence) {
	$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 1004 sub render_communication_status {	Line 1205 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 1017 sub render_communication_status {	Line 1222 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 1027 sub render_communication_status {	Line 1232 sub render_communication_status {

if ($resource->getErrors()) {	if ($resource->getErrors()) {
my $errors = $resource->getErrors();	my $errors = $resource->getErrors();
	my $errorcount = 0;
foreach (split(/,/, $errors)) {	foreach (split(/,/, $errors)) {
	last if ($errorcount>=10); # Only output 10 bombs maximum
if ($_) {	if ($_) {
$errorHTML .= ' <a href="/adm/email?display='	$errorcount++;
	$errorHTML .= ' <a '.$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 1051 sub render_quick_status {	Line 1259 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() &&
!$firstDisplayed) {	!$firstDisplayed) {
my $icon = $statusIconMap{$resource->status($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";	$result .= "<td width='30'> </td>\n";
}	}
Line 1079 sub render_long_status {	Line 1294 sub render_long_status {
if ($resource->is_problem()) {	if ($resource->is_problem()) {
$color = $colormap{$resource->status};	$color = $colormap{$resource->status};

if (dueInLessThen24Hours($resource, $part) \|\|	if (dueInLessThan24Hours($resource, $part) \|\|
lastTry($resource, $part)) {	lastTry($resource, $part)) {
$color = $hurryUpColor;	$color = $hurryUpColor;
}	}
Line 1105 sub render_long_status {	Line 1320 sub render_long_status {
return $result;	return $result;
}	}

	# Colors obtained by taking the icons, matching the colors, and
	# possibly reducing the Value (HSV) of the color, if it's too bright
	# for text, generally by one third or so.
	my %statusColors =
	(
	$resObj->CLOSED => '#000000',
	$resObj->OPEN => '#998b13',
	$resObj->CORRECT => '#26933f',
	$resObj->INCORRECT => '#c48207',
	$resObj->ATTEMPTED => '#a87510',
	$resObj->ERROR => '#000000'
	);
	my %statusStrings =
	(
	$resObj->CLOSED => 'Not yet open',
	$resObj->OPEN => 'Open',
	$resObj->CORRECT => 'Correct',
	$resObj->INCORRECT => 'Incorrect',
	$resObj->ATTEMPTED => 'Attempted',
	$resObj->ERROR => 'Network Error'
	);
	my @statuses = ($resObj->CORRECT, $resObj->ATTEMPTED, $resObj->INCORRECT, $resObj->OPEN, $resObj->CLOSED, $resObj->ERROR);

	use Data::Dumper;
	sub render_parts_summary_status {
	my ($resource, $part, $params) = @_;
	if (!$resource->is_problem() && !$resource->contains_problem) { return '<td></td>'; }
	if ($params->{showParts}) {
	return '<td></td>';
	}

	my $td = "<td align='right'>\n";
	my $endtd = "</td>\n";
	my @probs;

	if ($resource->contains_problem) {
	@probs=$resource->retrieveResources($resource,sub { $_[0]->is_problem() },1,0);
	} else {
	@probs=($resource);
	}
	my $return;
	my %overallstatus;
	my $totalParts;
	foreach my $resource (@probs) {
	# If there is a single part, just show the simple status
	if ($resource->singlepart()) {
	my $status = $resource->simpleStatus(${$resource->parts}[0]);
	$overallstatus{$status}++;
	$totalParts++;
	next;
	}
	# Now we can be sure the $part doesn't really matter.
	my $statusCount = $resource->simpleStatusCount();
	my @counts;
	foreach my $status (@statuses) {
	# decouple display order from the simpleStatusCount order
	my $slot = Apache::lonnavmaps::resource::statusToSlot($status);
	if ($statusCount->[$slot]) {
	$overallstatus{$status}+=$statusCount->[$slot];
	$totalParts+=$statusCount->[$slot];
	}
	}
	}
	$return.= $td . $totalParts . ' parts: ';
	foreach my $status (@statuses) {
	if ($overallstatus{$status}) {
	$return.="<font color='" . $statusColors{$status} .
	"'>" . $overallstatus{$status} . ' '
	. $statusStrings{$status} . "</font>";
	}
	}
	$return.= $endtd;
	return $return;
	}

my @preparedColumns = (\&render_resource, \&render_communication_status,	my @preparedColumns = (\&render_resource, \&render_communication_status,
\&render_quick_status, \&render_long_status);	\&render_quick_status, \&render_long_status,
	\&render_parts_summary_status);

sub setDefault {	sub setDefault {
my ($val, $default) = @_;	my ($val, $default) = @_;
Line 1114 sub setDefault {	Line 1405 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 1136 sub render {	Line 1432 sub render {
my $jump = $args->{'jump'};	my $jump = $args->{'jump'};
my $here = $args->{'here'};	my $here = $args->{'here'};
my $suppressNavmap = setDefault($args->{'suppressNavmap'}, 0);	my $suppressNavmap = setDefault($args->{'suppressNavmap'}, 0);
	my $closeAllPages = setDefault($args->{'closeAllPages'}, 0);
my $currentJumpDelta = 2; # change this to change how many resources are displayed	my $currentJumpDelta = 2; # change this to change how many resources are displayed
# before the current resource when using #current	# before the current resource when using #current

Line 1145 sub render {	Line 1442 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 1165 sub render {	Line 1462 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();
$ENV{"request.course.fn"}.".db",	if (!defined($navmap)) {
$ENV{"request.course.fn"}."_parms.db", 1, 1);	# no londer in course
$mustCloseNavMap = 1;	return '<font color="red">'.&mt('No course selected').'</font><br />
}	<a href="/adm/roles">'.&mt('Select a course').'</a><br />';
$navmap->init();	}
	}

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

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

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

# Step three: Ensure the folders are open	# Step three: Ensure the folders are open
my $mapIterator = $navmap->getIterator(undef, undef, undef, 1);	my $mapIterator = $navmap->getIterator(undef, undef, undef, 1);
my $depth = 1;	my $curRes;
$mapIterator->next(); # discard the first BEGIN_MAP
my $curRes = $mapIterator->next();
my $found = 0;	my $found = 0;

# 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 ($depth > 0 && !$found) {	while ($here && ($curRes = $mapIterator->next()) && !$found) {
if ($curRes == $mapIterator->BEGIN_MAP()) { $depth++; }
if ($curRes == $mapIterator->END_MAP()) { $depth--; }

if (ref($curRes) && $curRes->symb() eq $here) {	if (ref($curRes) && $curRes->symb() eq $here) {
my $mapStack = $mapIterator->getStack();	my $mapStack = $mapIterator->getStack();

Line 1220 sub render {	Line 1522 sub render {
}	}
$found = 1;	$found = 1;
}	}

$curRes = $mapIterator->next();
}	}
}	}

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)) {
$navmap = Apache::lonnavmaps::navmap->new($r,	$navmap = Apache::lonnavmaps::navmap->new();
$ENV{"request.course.fn"}.".db",
$ENV{"request.course.fn"}."_parms.db", 1, 1);
$mustCloseNavMap = 1;
}	}
# Paranoia: Make sure it's ready
$navmap->init();

# See if we're being passed a specific map	# See if we're being passed a specific map
if ($args->{'iterator_map'}) {	if ($args->{'iterator_map'}) {
Line 1258 sub render {	Line 1553 sub render {
$args->{'iterator'} = $it = $navmap->getIterator(undef, undef, $filterHash, $condition);	$args->{'iterator'} = $it = $navmap->getIterator(undef, undef, $filterHash, $condition);
}	}
}	}

# (re-)Locate the jump point, if any	# (re-)Locate the jump point, if any
# Note this does not take filtering or hidden into account... need	# Note this does not take filtering or hidden into account... need
# to be fixed?	# to be fixed?
my $mapIterator = $navmap->getIterator(undef, undef, $filterHash, 0);	my $mapIterator = $navmap->getIterator(undef, undef, $filterHash, 0);
my $depth = 1;	my $curRes;
$mapIterator->next();
my $curRes = $mapIterator->next();
my $foundJump = 0;	my $foundJump = 0;
my $counter = 0;	my $counter = 0;

while ($depth > 0 && !$foundJump) {	while (($curRes = $mapIterator->next()) && !$foundJump) {
if ($curRes == $mapIterator->BEGIN_MAP()) { $depth++; }
if ($curRes == $mapIterator->END_MAP()) { $depth--; }
if (ref($curRes)) { $counter++; }	if (ref($curRes)) { $counter++; }

if (ref($curRes) && $jump eq $curRes->symb()) {	if (ref($curRes) && $jump eq $curRes->symb()) {
Line 1282 sub render {	Line 1573 sub render {
$args->{'currentJumpIndex'} = $counter;	$args->{'currentJumpIndex'} = $counter;
$foundJump = 1;	$foundJump = 1;
}	}

$curRes = $mapIterator->next();
}	}

my $showParts = setDefault($args->{'showParts'}, 1);	my $showParts = setDefault($args->{'showParts'}, 1);
Line 1294 sub render {	Line 1583 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 .=	$result .=
'<img src="/adm/lonMisc/chat.gif"> New discussion since '.	'<img src="'.$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"> 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">  '.	$result .= '<td align="center" valign="bottom">  '.
'<img src="/adm/lonMisc/chat.gif"> Discussions</td><td align="center" valign="bottom">'.	'<img src="'.$location.'/chat.gif"> '.&mt('Discussions').'</td><td align="center" valign="bottom">'.
'  <img src="/adm/lonMisc/feedback.gif"> New message (click to open)'.	'  <img src="'.$location.'/feedback.gif"> '.&mt('New message (click to open)').
'</td>';	'</td>';
}	}

Line 1318 sub render {	Line 1608 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).'"';
"\">Close All Folders</a>";	$text='Close All Folders';
	} else {
	$link='"navmaps?condition=1&filter=&'.$queryString.
	'&here='.&Apache::lonnet::escape($here).'"';
	$text='Open All Folders';
	}
	if ($args->{'caller'} eq 'navmapsdisplay') {
	&add_linkitem($args->{'linkitems'},'changefolder',
	'location.href='.$link,$text);
	} else {
	$result.='<a href='.$link.'>'.&mt($text).'</a>';
	}
	$result .= "\n";
	}

	# Check for any unread discussions in all resources.
	if ($args->{'caller'} eq 'navmapsdisplay') {
	&add_linkitem($args->{'linkitems'},'clearbubbles',
	'document.clearbubbles.submit()',
	'Mark all posts read');
	my $time=time;
	$result .= (<<END);
	<form name="clearbubbles" method="post" action="/adm/feedback">
	<input type="hidden" name="navurl" value="$ENV{'QUERY_STRING'}" />
	<input type="hidden" name="navtime" value="$time" />
	END
	if ($args->{'sort'} eq 'discussion') {
	my $totdisc = 0;
	my $haveDisc = '';
	my @allres=$navmap->retrieveResources();
	foreach my $resource (@allres) {
	if ($resource->hasDiscussion()) {
	$haveDisc .= $resource->wrap_symb().':';
	$totdisc ++;
	}
	}
	if ($totdisc > 0) {
	$haveDisc =~ s/:$//;
	$result .= (<<END);
	<input type="hidden" name="navmaps" value="$haveDisc" />
	</form>
	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 {
$result.="<a href=\"navmaps?condition=1&filter=&$queryString" .	$result .= '</tr><tr>';
"&here=" . Apache::lonnet::escape($here) .
"\">Open All Folders</a>";
}	}
$result .= "<br /><br />\n";	$result.=&show_linkitems($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'};
	}

	$result .= "<br />\n";
if ($r) {	if ($r) {
$r->print($result);	$r->print($result);
$r->rflush();	$r->rflush();
Line 1351 sub render {	Line 1704 sub render {
$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 1361 sub render {	Line 1716 sub render {
$it->{FIRST_RESOURCE},	$it->{FIRST_RESOURCE},
$it->{FINISH_RESOURCE},	$it->{FINISH_RESOURCE},
{}, undef, 1);	{}, undef, 1);
$depth = 0;	my $depth = 0;
$dfsit->next();	$dfsit->next();
my $curRes = $dfsit->next();	my $curRes = $dfsit->next();
while ($depth > -1) {	while ($depth > -1) {
Line 1393 sub render {	Line 1748 sub render {

my $displayedJumpMarker = 0;	my $displayedJumpMarker = 0;
# Set up iteration.	# Set up iteration.
$depth = 1;
$it->next(); # discard initial BEGIN_MAP
$curRes = $it->next();
my $now = time();	my $now = time();
my $in24Hours = $now + 24 * 60 * 60;	my $in24Hours = $now + 24 * 60 * 60;
my $rownum = 0;	my $rownum = 0;
Line 1403 sub render {	Line 1755 sub render {
# export "here" marker information	# export "here" marker information
$args->{'here'} = $here;	$args->{'here'} = $here;

while ($depth > 0) {	$args->{'indentLevel'} = -1; # first BEGIN_MAP takes this to 0
if ($curRes == $it->BEGIN_MAP()) { $depth++; }	my @resources;
if ($curRes == $it->END_MAP()) { $depth--; }	my $code='';# sub { !(shift->is_map();) };
	if ($args->{'sort'} eq 'title') {
	my $oldFilterFunc = $filterFunc;
	my $filterFunc=
	sub {
	my ($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') {
	my $oldFilterFunc = $filterFunc;
	my $filterFunc=
	sub {
	my ($res)=@_;
	if (!$res->is_problem()) { return 0;}
	return &$oldFilterFunc($res);
	};
	@resources=$navmap->retrieveResources(undef,$filterFunc);
	@resources= sort {
	if ($a->duedate ne $b->duedate) {
	return $a->duedate cmp $b->duedate;
	}
	my $value=&cmp_title($a,$b);
	return $value;
	} @resources;
	} elsif ($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) {
	if ($args->{'sort'}) {
	$curRes = shift(@resources);
	} else {
	$curRes = $it->next($closeAllPages);
	}
	if (!$curRes) { last; }

# Maintain indentation level.	# Maintain indentation level.
if ($curRes == $it->BEGIN_MAP() \|\|	if ($curRes == $it->BEGIN_MAP() \|\|
Line 1456 sub render {	Line 1859 sub render {
$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 1509 sub render {	Line 1908 sub render {
# 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 1520 sub render {	Line 1938 sub render {

# 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 $stack = $it->getStack();
my $src = getLinkForResource($stack);

my $srcHasQuestion = $src =~ /\?/;
$args->{"resourceLink"} = $src.
($srcHasQuestion?'&':'?') .
'symb=' . &Apache::lonnet::escape($curRes->symb());

# Now, display each column.	# Now, display each column.
foreach my $col (@$cols) {	foreach my $col (@$cols) {
my $colHTML = '';	my $colHTML = '';
Line 1559 sub render {	Line 1970 sub render {
$r->rflush();	$r->rflush();
}	}
} continue {	} continue {
$curRes = $it->next();

if ($r) {	if ($r) {
# If we have the connection, make sure the user is still connected	# If we have the connection, make sure the user is still connected
my $c = $r->connection;	my $c = $r->connection;
if ($c->aborted()) {	if ($c->aborted()) {
Apache::lonnet::logthis("navmaps aborted");
# Who cares what we do, nobody will see it anyhow.	# Who cares what we do, nobody will see it anyhow.
return '';	return '';
}	}
Line 1580 sub render {	Line 1988 sub render {
# it's quite likely this might fix other browsers, too, and	# it's quite likely this might fix other browsers, too, and
# certainly won't hurt anything.	# certainly won't hurt anything.
if ($displayedJumpMarker) {	if ($displayedJumpMarker) {
$result .= "<script>setTimeout(\"location += '#curloc';\", 0)</script>\n";	$result .= "
	<script>
	if (location.href.indexOf('#curloc')==-1) {
	setTimeout(\"location += '#curloc';\", 0)
	}
	</script>";
}	}

$result .= "</table>";	$result .= "</table>";
Line 1591 sub render {	Line 2004 sub render {
$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 1615 In order of increasing complexity and po	Line 2066 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 1646 To create a navmap object, use the follo	Line 2098 To create a navmap object, use the follo

=over 4	=over 4

=item * B<Apache::lonnavmaps::navmap-E<gt>new>(navHashFile, parmHashFile,	=item * B<Apache::lonnavmaps::navmap-E<gt>new>():
genCourseAndUserOptions, genMailDiscussStatus, getUserData):

Binds a new navmap object to the compiled nav map hash and parm hash	Creates a new navmap object. Returns the navmap object if this is
given as filenames. genCourseAndUserOptions is a flag saying whether	successful, or B<undef> if not.
the course options and user options hash should be generated. This is
for when you are using the parameters of the resources that require
them; see documentation in resource object
documentation. genMailDiscussStatus causes the nav map to retreive
information about the email and discussion status of
resources. Returns the navmap object if this is successful, or
B<undef> if not. You must check for undef; errors will occur when you
try to use the other methods otherwise. getUserData, if true, will
retreive the user's performance data for various problems.

=back	=back

Once you have the $navmap object, call ->init() on it when you are ready
to use it. This allows you to check if the course map is defined (see
B<courseMapDefined> below) before engaging in potentially expensive
initialization routines for the genCourseAndUserOptions and
genMailDiscussStatus option.

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 1685 See iterator documentation below.	Line 2117 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 1692 sub new {	Line 2125 sub new {
my $class = ref($proto) \|\| $proto;	my $class = ref($proto) \|\| $proto;
my $self = {};	my $self = {};

$self->{NAV_HASH_FILE} = shift;
$self->{PARM_HASH_FILE} = shift;
$self->{GENERATE_COURSE_USER_OPT} = shift;
$self->{GENERATE_EMAIL_DISCUSS_STATUS} = shift;
$self->{GET_USER_DATA} = shift;

# Resource cache stores navmap resources as we reference them. We generate	# Resource cache stores navmap resources as we reference them. We generate
# them on-demand so we don't pay for creating resources unless we use them.	# them on-demand so we don't pay for creating resources unless we use them.
$self->{RESOURCE_CACHE} = {};	$self->{RESOURCE_CACHE} = {};
Line 1710 sub new {	Line 2137 sub new {

my %navmaphash;	my %navmaphash;
my %parmhash;	my %parmhash;
if (!(tie(%navmaphash, 'GDBM_File', $self->{NAV_HASH_FILE},	my $courseFn = $env{"request.course.fn"};
	if (!(tie(%navmaphash, 'GDBM_File', "${courseFn}.db",
&GDBM_READER(), 0640))) {	&GDBM_READER(), 0640))) {
return undef;	return undef;
}	}

if (!(tie(%parmhash, 'GDBM_File', $self->{PARM_HASH_FILE},	if (!(tie(%parmhash, 'GDBM_File', "${courseFn}_parms.db",
&GDBM_READER(), 0640)))	&GDBM_READER(), 0640)))
{	{
untie %{$self->{PARM_HASH}};	untie %{$self->{PARM_HASH}};
Line 1724 sub new {	Line 2152 sub new {

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

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

return $self;	return $self;
}	}

sub init {	sub generate_course_user_opt {
my $self = shift;	my $self = shift;
if ($self->{INITED}) { return; }	if ($self->{COURSE_USER_OPT_GENERATED}) { return; }

# If the course opt hash and the user opt hash should be generated,	my $uname=$env{'user.name'};
# generate them	my $udom=$env{'user.domain'};
if ($self->{GENERATE_COURSE_USER_OPT}) {	my $cid=$env{'request.course.id'};
my $uname=$ENV{'user.name'};	my $cdom=$env{'course.'.$cid.'.domain'};
my $udom=$ENV{'user.domain'};	my $cnum=$env{'course.'.$cid.'.num'};
my $uhome=$ENV{'user.home'};
my $cid=$ENV{'request.course.id'};
my $chome=$ENV{'course.'.$cid.'.home'};
my ($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\:/) {	undef($courseopt);
$courserdatas{$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);
}
# --------------------------------------------------- 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 \|\| $reply=~/con.*lost/i )	undef($useropt);
{	}
$self->{NETWORK_FAILURE} = 1;
}
}
foreach (split(/\&/,$userrdatas{$uname.'___'.$udom})) {
my ($name,$value)=split(/\=/,$_);
$useropt{$userprefix.&Apache::lonnet::unescape($name)}=
&Apache::lonnet::unescape($value);
}
$self->{COURSE_OPT} = \%courseopt;
$self->{USER_OPT} = \%useropt;
}
}

if ($self->{GENERATE_EMAIL_DISCUSS_STATUS}) {	$self->{COURSE_OPT} = $courseopt;
my $cid=$ENV{'request.course.id'};	$self->{USER_OPT} = $useropt;
my ($cdom,$cnum)=split(/\_/,$cid);
	$self->{COURSE_USER_OPT_GENERATED} = 1;
my %emailstatus = &Apache::lonnet::dump('email_status');
my $logoutTime = $emailstatus{'logout'};	return;
my $courseLeaveTime = $emailstatus{'logout_'.$ENV{'request.course.id'}};	}
$self->{LAST_CHECK} = (($courseLeaveTime > $logoutTime) ?
$courseLeaveTime : $logoutTime);	sub generate_email_discuss_status {
my %discussiontime = &Apache::lonnet::dump('discussiontimes',	my $self = shift;
$cdom, $cnum);	my $symb = shift;
my %feedback=();	if ($self->{EMAIL_DISCUSS_GENERATED}) { return; }
my %error=();
my $keys = &Apache::lonnet::reply('keys:'.	my $cid=$env{'request.course.id'};
$ENV{'user.domain'}.':'.	my $cdom=$env{'course.'.$cid.'.domain'};
$ENV{'user.name'}.':nohist_email',	my $cnum=$env{'course.'.$cid.'.num'};
$ENV{'user.home'});
	my %emailstatus = &Apache::lonnet::dump('email_status');
foreach my $msgid (split(/\&/, $keys)) {	my $logoutTime = $emailstatus{'logout'};
$msgid=&Apache::lonnet::unescape($msgid);	my $courseLeaveTime = $emailstatus{'logout_'.$env{'request.course.id'}};
my $plain=&Apache::lonnet::unescape(&Apache::lonnet::unescape($msgid));	$self->{LAST_CHECK} = (($courseLeaveTime > $logoutTime) ?
if ($plain=~/(Error\|Feedback) \[([^\]]+)\]/) {	$courseLeaveTime : $logoutTime);
my ($what,$url)=($1,$2);	my %discussiontime = &Apache::lonnet::dump('discussiontimes',
my %status=	$cdom, $cnum);
&Apache::lonnet::get('email_status',[$msgid]);	my %lastread = &Apache::lonnet::dump('nohist_'.$cid.'_discuss',
if ($status{$msgid}=~/^error\:/) {	$env{'user.domain'},$env{'user.name'},'lastread');
$status{$msgid}='';	my %lastreadtime = ();
}	foreach (keys %lastread) {
	my $key = $_;
if (($status{$msgid} eq 'new') \|\|	$key =~ s/_lastread$//;
(!$status{$msgid})) {	$lastreadtime{$key} = $lastread{$_};
if ($what eq 'Error') {	}
$error{$url}.=','.$msgid;
} else {	my %feedback=();
$feedback{$url}.=','.$msgid;	my %error=();
}	my @keys = &Apache::lonnet::getkeys('nohist_email',$env{'user.domain'},
}	$env{'user.name'});
}
}	foreach my $msgid (@keys) {
	if ((!$emailstatus{$msgid}) \|\| ($emailstatus{$msgid} eq 'new')) {
$self->{FEEDBACK} = \%feedback;	my $plain=
$self->{ERROR_MSG} = \%error; # what is this? JB	&Apache::lonnet::unescape(&Apache::lonnet::unescape($msgid));
$self->{DISCUSSION_TIME} = \%discussiontime;	if ($plain=~/ \[([^\]]+)\]\:/) {
$self->{EMAIL_STATUS} = \%emailstatus;	my $url=$1;
	if ($plain=~/\:Error \[/) {
	$error{$url}.=','.$msgid;
	} else {
	$feedback{$url}.=','.$msgid;
	}
	}
	}
}	}

	#url's of resources that have feedbacks
	$self->{FEEDBACK} = \%feedback;
	#or errors
	$self->{ERROR_MSG} = \%error;
	$self->{DISCUSSION_TIME} = \%discussiontime;
	$self->{EMAIL_STATUS} = \%emailstatus;
	$self->{LAST_READ} = \%lastreadtime;

	$self->{EMAIL_DISCUSS_GENERATED} = 1;
	}

	sub get_user_data {
	my $self = shift;
	if ($self->{RETRIEVED_USER_DATA}) { return; }

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

	$self->{RETRIEVED_USER_DATA} = 1;
	}

if ($self->{GET_USER_DATA}) {	sub get_discussion_data {
# Retreive performance data on problems	my $self = shift;
my %student_data = Apache::lonnet::currentdump($ENV{'request.course.id'},	if ($self->{RETRIEVED_DISCUSSION_DATA}) {
$ENV{'user.domain'},	return $self->{DISCUSSION_DATA};
$ENV{'user.name'});
$self->{STUDENT_DATA} = \%student_data;
}	}

$self->{PARM_CACHE} = {};	$self->generate_email_discuss_status();
$self->{INITED} = 1;
	my $cid=$env{'request.course.id'};
	my $cdom=$env{'course.'.$cid.'.domain'};
	my $cnum=$env{'course.'.$cid.'.num'};
	# Retrieve discussion data for resources in course
	my %discussion_data = &Apache::lonnet::dumpstore($cid,$cdom,$cnum);


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


# Internal function: Takes a key to look up in the nav hash and implements internal	# Internal function: Takes a key to look up in the nav hash and implements internal
# memory caching of that key.	# memory caching of that key.
sub navhash {	sub navhash {
Line 1867 sub navhash {	Line 2307 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 1877 sub courseMapDefined {	Line 2317 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();

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});
return $self->{DISCUSSION_TIME}->{$symb} >
$self->{LAST_CHECK};	# backward compatibility (bulletin boards used to be 'wrapped')
	my $ressymb = $self->wrap_symb($symb);
	if ( defined ( $self->{LAST_READ}->{$ressymb} ) ) {
	return $self->{DISCUSSION_TIME}->{$ressymb} > $self->{LAST_READ}->{$ressymb};
	} else {
	# return $self->{DISCUSSION_TIME}->{$ressymb} > $self->{LAST_CHECK}; # v.1.1 behavior
	return $self->{DISCUSSION_TIME}->{$ressymb} > 0; # in 1.2 will display speech bubble icons for all items with posts until marked as read (even if read in v 1.1).
	}
	}

	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;

	$self->generate_email_discuss_status();

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

return $self->{FEEDBACK}->{$symb};	return $self->{FEEDBACK}->{$symb};
Line 1916 sub getFeedback {	Line 2428 sub getFeedback {
sub getErrors {	sub getErrors {
my $self = shift;	my $self = shift;
my $src = shift;	my $src = shift;

	$self->generate_email_discuss_status();

if (!defined($self->{ERROR_MSG})) { return ""; }	if (!defined($self->{ERROR_MSG})) { return ""; }
return $self->{ERROR_MSG}->{$src};	return $self->{ERROR_MSG}->{$src};
}	}
Line 1964 sub getById {	Line 2478 sub getById {
sub getBySymb {	sub getBySymb {
my $self = shift;	my $self = shift;
my $symb = shift;	my $symb = shift;
my ($mapUrl, $id, $filename) = split (/___/, $symb);
	my ($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 1989 resource in the navmap.	Line 2508 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 2005 in the navmap.	Line 2524 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 2029 sub parmval_real {	Line 2548 sub parmval_real {
my $self = shift;	my $self = shift;
my ($what,$symb,$recurse) = @_;	my ($what,$symb,$recurse) = @_;

my $cid=$ENV{'request.course.id'};	# Make sure the {USER_OPT} and {COURSE_OPT} hashes are populated
my $csec=$ENV{'request.course.sec'};	$self->generate_course_user_opt();
my $uname=$ENV{'user.name'};
my $udom=$ENV{'user.domain'};	my $cid=$env{'request.course.id'};
	my $csec=$env{'request.course.sec'};
	my $cgroup='';
	my @cgrps=split(/:/,$env{'request.course.groups'});
	if (@cgrps > 0) {
	@cgrps = sort(@cgrps);
	$cgroup = $cgrps[0];
	}
	my $uname=$env{'user.name'};
	my $udom=$env{'user.domain'};

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

my ($mapname,$id,$fn)=split(/\_\_\_/,$symb);	my ($mapname,$id,$fn)=&Apache::lonnet::decode_symb($symb);

# ----------------------------------------------------- Cascading lookup scheme	# ----------------------------------------------------- Cascading lookup scheme
my $rwhat=$what;	my $rwhat=$what;
Line 2046 sub parmval_real {	Line 2574 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 2068 sub parmval_real {	Line 2600 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 2076 sub parmval_real {	Line 2614 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 2087 sub parmval_real {	Line 2623 sub parmval_real {

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

my $default=&Apache::lonnet::metadata($fn,$rwhat.'.default');	my $meta_rwhat=$rwhat;
	$meta_rwhat=~s/\./_/g;
	my $default=&Apache::lonnet::metadata($fn,$meta_rwhat);
	if (defined($default)) { return $default}
	$default=&Apache::lonnet::metadata($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 2110 sub parmval_real {	Line 2656 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 2127 function that takes a resource object as	Line 2676 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 2142 want to know is if I<any> resources matc	Line 2692 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<hasResources>(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 2179 sub retrieveResources {	Line 2749 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 2198 sub retrieveResources {	Line 2768 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 = ();

# Run down the iterator and collect the resources.	# Run down the iterator and collect the resources.
my $depth = 1;	my $curRes;
$it->next();
my $curRes = $it->next();	while ($curRes = $it->next()) {

while ($depth > 0) {
if ($curRes == $it->BEGIN_MAP()) {
$depth++;
}
if ($curRes == $it->END_MAP()) {
$depth--;
}

if (ref($curRes)) {	if (ref($curRes)) {
if (!&$filterFunc($curRes)) {	if (!&$filterFunc($curRes)) {
next;	next;
Line 2227 sub retrieveResources {	Line 2788 sub retrieveResources {
}	}
}	}

} continue {
$curRes = $it->next();
}	}

return @resources;	return @resources;
Line 2239 sub hasResource {	Line 2798 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 2304 new branch. The possible tokens are:	Line 2872 new branch. The possible tokens are:

=over 4	=over 4

	=item * B<END_ITERATOR>:

	The iterator has returned all that it's going to. Further calls to the
	iterator will just produce more of these. This is a "false" value, and
	is the only false value the iterator which will be returned, so it can
	be used as a loop sentinel.

=item * B<BEGIN_MAP>:	=item * B<BEGIN_MAP>:

A new map is being recursed into. This is returned I<after> the map	A new map is being recursed into. This is returned I<after> the map
Line 2336 but only one resource will be returned.	Line 2911 but only one resource will be returned.

=back	=back

	=head2 Normal Usage

	Normal usage of the iterator object is to do the following:

	my $it = $navmap->getIterator([your params here]);
	my $curRes;
	while ($curRes = $it->next()) {
	[your logic here]
	}

	Note that inside of the loop, it's frequently useful to check if
	"$curRes" is a reference or not with the reference function; only
	resource objects will be references, and any non-references will
	be the tokens described above.

	Also note there is some old code floating around that trys to track
	the depth of the iterator to see when it's done; do not copy that
	code. It is difficult to get right and harder to understand then
	this. They should be migrated to this new style.

=cut	=cut

# Here are the tokens for the iterator:	# Here are the tokens for the iterator:

	sub END_ITERATOR { return 0; }
sub BEGIN_MAP { return 1; } # begining of a new map	sub BEGIN_MAP { return 1; } # begining of a new map
sub END_MAP { return 2; } # end of the map	sub END_MAP { return 2; } # end of the map
sub BEGIN_BRANCH { return 3; } # beginning of a branch	sub BEGIN_BRANCH { return 3; } # beginning of a branch
Line 2358 sub new {	Line 2954 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 2425 sub new {	Line 3021 sub new {

# prime the recursion	# prime the recursion
$self->{$firstResourceName}->{DATA}->{$valName} = 0;	$self->{$firstResourceName}->{DATA}->{$valName} = 0;
my $depth = 0;	$iterator->next();
$iterator->next();
my $curRes = $iterator->next();	my $curRes = $iterator->next();
while ($depth > -1) {	my $depth = 1;
if ($curRes == $iterator->BEGIN_MAP()) { $depth++; }	while ($depth > 0) {
if ($curRes == $iterator->END_MAP()) { $depth--; }	if ($curRes == $iterator->BEGIN_MAP()) { $depth++; }
	if ($curRes == $iterator->END_MAP()) { $depth--; }

if (ref($curRes)) {	if (ref($curRes)) {
# If there's only one resource, this will save it	# If there's only one resource, this will save it
# we have to filter empty resources from consideration here,	# we have to filter empty resources from consideration here,
Line 2465 sub new {	Line 3061 sub new {
$curRes->{DATA}->{DISPLAY_DEPTH} = $finalDepth;	$curRes->{DATA}->{DISPLAY_DEPTH} = $finalDepth;
if ($finalDepth > $maxDepth) {$maxDepth = $finalDepth;}	if ($finalDepth > $maxDepth) {$maxDepth = $finalDepth;}
}	}
} continue {
$curRes = $iterator->next();	$curRes = $iterator->next();
}	}
}	}

# Check: Was this only one resource, a map?	# Check: Was this only one resource, a map?
if ($resourceCount == 1 && $resource->is_map() && !$self->{FORCE_TOP}) {	if ($resourceCount == 1 && $resource->is_sequence() && !$self->{FORCE_TOP}) {
my $firstResource = $resource->map_start();	my $firstResource = $resource->map_start();
my $finishResource = $resource->map_finish();	my $finishResource = $resource->map_finish();
return	return
Apache::lonnavmaps::iterator->new($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 2487 sub new {	Line 3084 sub new {
$self->{MAX_DEPTH} = $maxDepth;	$self->{MAX_DEPTH} = $maxDepth;
$self->{STACK} = [];	$self->{STACK} = [];
$self->{RECURSIVE_ITERATOR_FLAG} = 0;	$self->{RECURSIVE_ITERATOR_FLAG} = 0;
	$self->{FINISHED} = 0; # When true, the iterator has finished

for (my $i = 0; $i <= $self->{MAX_DEPTH}; $i++) {	for (my $i = 0; $i <= $self->{MAX_DEPTH}; $i++) {
push @{$self->{STACK}}, [];	push @{$self->{STACK}}, [];
Line 2503 sub new {	Line 3101 sub new {

sub next {	sub next {
my $self = shift;	my $self = shift;
	my $closeAllPages=shift;
	if ($self->{FINISHED}) {
	return END_ITERATOR();
	}

# If we want to return the top-level map object, and haven't yet,	# If we want to return the top-level map object, and haven't yet,
# do so.	# do so.
Line 2513 sub next {	Line 3115 sub next {

if ($self->{RECURSIVE_ITERATOR_FLAG}) {	if ($self->{RECURSIVE_ITERATOR_FLAG}) {
# grab the next from the recursive iterator	# grab the next from the recursive iterator
my $next = $self->{RECURSIVE_ITERATOR}->next();	my $next = $self->{RECURSIVE_ITERATOR}->next($closeAllPages);

# is it a begin or end map? If so, update the depth	# is it a begin or end map? If so, update the depth
if ($next == BEGIN_MAP() ) { $self->{RECURSIVE_DEPTH}++; }	if ($next == BEGIN_MAP() ) { $self->{RECURSIVE_DEPTH}++; }
Line 2563 sub next {	Line 3165 sub next {
$self->{CURRENT_DEPTH}--;	$self->{CURRENT_DEPTH}--;
return END_BRANCH();	return END_BRANCH();
} else {	} else {
	$self->{FINISHED} = 1;
return END_MAP();	return END_MAP();
}	}
}	}
Line 2626 sub next {	Line 3229 sub next {

# That ends the main iterator logic. Now, do we want to recurse	# That ends the main iterator logic. Now, do we want to recurse
# down this map (if this resource is a map)?	# down this map (if this resource is a map)?
if ($self->{HERE}->is_map() &&	if ( ($self->{HERE}->is_sequence() \|\| (!$closeAllPages && $self->{HERE}->is_page())) &&
(defined($self->{FILTER}->{$self->{HERE}->map_pc()}) xor $self->{CONDITION})) {	(defined($self->{FILTER}->{$self->{HERE}->map_pc()}) xor $self->{CONDITION})) {
$self->{RECURSIVE_ITERATOR_FLAG} = 1;	$self->{RECURSIVE_ITERATOR_FLAG} = 1;
my $firstResource = $self->{HERE}->map_start();	my $firstResource = $self->{HERE}->map_start();
Line 2635 sub next {	Line 3238 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 2644 sub next {	Line 3249 sub next {
my $browsePriv = $self->{HERE}->browsePriv();	my $browsePriv = $self->{HERE}->browsePriv();
if (!$self->{HERE}->src() \|\|	if (!$self->{HERE}->src() \|\|
(!($browsePriv eq 'F') && !($browsePriv eq '2')) ) {	(!($browsePriv eq 'F') && !($browsePriv eq '2')) ) {
return $self->next();	return $self->next($closeAllPages);
}	}

return $self->{HERE};	return $self->{HERE};
Line 2688 sub populateStack {	Line 3293 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 2696 package Apache::lonnavmaps::DFSiterator;	Line 3303 package Apache::lonnavmaps::DFSiterator;
# useful for pre-processing of some kind, and is in fact used by the main	# useful for pre-processing of some kind, and is in fact used by the main
# iterator that way, but that's about it.	# iterator that way, but that's about it.
# One could imagine merging this into the init routine of the main iterator,	# One could imagine merging this into the init routine of the main iterator,
# but this might as well be left seperate, since it is possible some other	# but this might as well be left separate, since it is possible some other
# use might be found for it. - Jeremy	# use might be found for it. - Jeremy

# Unlike the main iterator, this DOES return all resources, even blank ones.	# Unlike the main iterator, this DOES return all resources, even blank ones.
Line 2716 sub new {	Line 3323 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 2870 sub populateStack {	Line 3477 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 2952 sub new {	Line 3559 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 3040 Returns the title of the resource.	Line 3647 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 3048 sub kind { my $self=shift; return $self-	Line 3656 sub kind { my $self=shift; return $self-
sub randomout { my $self=shift; return $self->navHash("randomout_", 1); }	sub randomout { my $self=shift; return $self->navHash("randomout_", 1); }
sub randompick {	sub randompick {
my $self = shift;	my $self = shift;
return $self->{NAV_MAP}->{PARM_HASH}->{$self->symb .	return $self->parmval('randompick');
'.0.parameter_randompick'};	}
	sub link {
	my $self=shift;
	if ($self->encrypted()) { return &Apache::lonenc::encrypted($self->src); }
	return $self->src;
}	}
sub src {	sub src {
my $self=shift;	my $self=shift;
return $self->navHash("src_", 1);	return $self->navHash("src_", 1);
}	}
	sub shown_symb {
	my $self=shift;
	if ($self->encrypted()) {return &Apache::lonenc::encrypted($self->symb());}
	return $self->symb();
	}
	sub id {
	my $self=shift;
	return $self->{ID};
	}
	sub enclosing_map_src {
	my $self=shift;
	(my $first, my $second) = $self->{ID} =~ /(\d+).(\d+)/;
	return $self->navHash('map_id_'.$first);
	}
sub symb {	sub symb {
my $self=shift;	my $self=shift;
(my $first, my $second) = $self->{ID} =~ /(\d+).(\d+)/;	(my $first, my $second) = $self->{ID} =~ /(\d+).(\d+)/;
my $symbSrc = &Apache::lonnet::declutter($self->src());	my $symbSrc = &Apache::lonnet::declutter($self->src());
return &Apache::lonnet::declutter(	my $symb = &Apache::lonnet::declutter($self->navHash('map_id_'.$first))
$self->navHash('map_id_'.$first))
. '___' . $second . '___' . $symbSrc;	. '___' . $second . '___' . $symbSrc;
	return &Apache::lonnet::symbclean($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 3113 Returns true if the resource is a sequen	Line 3764 Returns true if the resource is a sequen

=cut	=cut

	sub hasResource {
	my $self = shift;
	return $self->{NAV_MAP}->hasResource(@_);
	}

	sub retrieveResources {
	my $self = shift;
	return $self->{NAV_MAP}->retrieveResources(@_);
	}

	sub is_exam {
	my ($self,$part) = @_;
	if ($self->parmval('type',$part) eq 'exam') {
	return 1;
	}
	if ($self->src() =~ /\.(exam)$/) {
	return 1;
	}
	return 0;
	}
sub is_html {	sub is_html {
my $self=shift;	my $self=shift;
my $src = $self->src();	my $src = $self->src();
Line 3126 sub is_page {	Line 3796 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$/);	if ($src =~ /\.(problem\|exam\|quiz\|assess\|survey\|form\|library\|task)$/) {
	return !($self->is_practice());
	}
	return 0;
	}
	sub contains_problem {
	my $self=shift;
	if ($self->is_page()) {
	my $hasProblem=$self->hasResource($self,sub { $_[0]->is_problem() },1);
	return $hasProblem;
	}
	return 0;
}	}
sub is_sequence {	sub is_sequence {
my $self=shift;	my $self=shift;
Line 3137 sub is_sequence {	Line 3826 sub is_sequence {
return $self->navHash("is_map_", 1) &&	return $self->navHash("is_map_", 1) &&
$self->navHash("map_type_" . $self->map_pc()) eq 'sequence';	$self->navHash("map_type_" . $self->map_pc()) eq 'sequence';
}	}
	sub is_survey {
	my $self = shift();
	my $part = shift();
	if ($self->parmval('type',$part) eq 'survey') {
	return 1;
	}
	if ($self->src() =~ /\.(survey)$/) {
	return 1;
	}
	return 0;
	}
	sub is_task {
	my $self=shift;
	my $src = $self->src();
	return ($src =~ /\.(task)$/)
	}

	sub is_empty_sequence {
	my $self=shift;
	my $src = $self->src();
	return !$self->is_page() && $self->navHash("is_map_", 1) && !$self->navHash("map_type_" . $self->map_pc());
	}

# Private method: Shells out to the parmval in the nav map, handler parts.	# Private method: Shells out to the parmval in the nav map, handler parts.
sub parmval {	sub parmval {
Line 3307 sub answerdate {	Line 4018 sub answerdate {
}	}
sub awarded {	sub awarded {
my $self = shift; my $part = shift;	my $self = shift; my $part = shift;
	$self->{NAV_MAP}->get_user_data();
if (!defined($part)) { $part = '0'; }	if (!defined($part)) { $part = '0'; }
return $self->{NAV_MAP}->{STUDENT_DATA}->{$self->symb()}->{'resource.'.$part.'.awarded'};	return $self->{NAV_MAP}->{STUDENT_DATA}->{$self->symb()}->{'resource.'.$part.'.awarded'};
}	}
sub duedate {	sub duedate {
(my $self, my $part) = @_;	(my $self, my $part) = @_;
	my $interval=$self->parmval("interval", $part);
	if ($interval) {
	my $first_access=&Apache::lonnet::get_first_access('map',$self->symb);
	if ($first_access) { return ($first_access+$interval); }
	}
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 3328 sub opendate {	Line 4049 sub opendate {
}	}
sub problemstatus {	sub problemstatus {
(my $self, my $part) = @_;	(my $self, my $part) = @_;
return $self->parmval("problemstatus", $part);	return lc $self->parmval("problemstatus", $part);
}	}
sub sig {	sub sig {
(my $self, my $part) = @_;	(my $self, my $part) = @_;
Line 3352 sub weight {	Line 4073 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 3396 Returns a false value if there has been	Line 4126 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 3416 sub hasDiscussion {	Line 4159 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 3445 Returns the number of parts of the probl	Line 4198 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 3491 sub countParts {	Line 4254 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;
}	}

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

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

$self->extractParts();	$self->extractParts();
return $self->{RESPONSE_TYPES}->{$part};	if (defined($self->{RESPONSE_TYPES}->{$part})) {
	return @{$self->{RESPONSE_TYPES}->{$part}};
	} else {
	return undef;
	}
}	}

sub responseIds {	sub responseIds {
Line 3509 sub responseIds {	Line 4301 sub responseIds {
my $part = shift;	my $part = shift;

$self->extractParts();	$self->extractParts();
return $self->{RESPONSE_IDS}->{$part};	if (defined($self->{RESPONSE_IDS}->{$part})) {
	return @{$self->{RESPONSE_IDS}->{$part}};
	} else {
	return undef;
	}
}	}

# Private function: Extracts the parts information, both part names and	# Private function: Extracts the parts information, both part names and
Line 3526 sub extractParts {	Line 4322 sub extractParts {

# Retrieve part count, if this is a problem	# Retrieve part count, if this is a problem
if ($self->is_problem()) {	if ($self->is_problem()) {
	my $partorder = &Apache::lonnet::metadata($self->src(), 'partorder');
my $metadata = &Apache::lonnet::metadata($self->src(), 'packages');	my $metadata = &Apache::lonnet::metadata($self->src(), 'packages');
if (!$metadata) {
$self->{RESOURCE_ERROR} = 1;
$self->{PARTS} = [];
$self->{PART_TYPE} = {};
return;
}
foreach (split(/\,/,$metadata)) {
if ($_ =~ /^part_(.*)$/) {
my $part = $1;
# This floods the logs if it blows up
if (defined($parts{$part})) {
Apache::lonnet::logthis("$part multiply defined in metadata for " . $self->symb());
}

# check to see if part is turned off.

if (!Apache::loncommon::check_if_partid_hidden($part, $self->symb())) {	if ($partorder) {
$parts{$part} = 1;	my @parts;
}	for my $part (split (/,/,$partorder)) {
}	if (!Apache::loncommon::check_if_partid_hidden($part, $self->symb())) {
	push @parts, $part;
	$parts{$part} = 1;
	}
	}
	$self->{PARTS} = \@parts;
	} else {
	if (!$metadata) {
	$self->{RESOURCE_ERROR} = 1;
	$self->{PARTS} = [];
	$self->{PART_TYPE} = {};
	return;
	}
	foreach (split(/\,/,$metadata)) {
	if ($_ =~ /^(?:part\|Task)_(.*)$/) {
	my $part = $1;
	# This floods the logs if it blows up
	if (defined($parts{$part})) {
	&Apache::lonnet::logthis("$part multiply defined in metadata for " . $self->symb());
	}

	# check to see if part is turned off.

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


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

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

Line 3563 sub extractParts {	Line 4372 sub extractParts {
}	}

# Now, the unfortunate thing about this is that parts, part name, and	# Now, the unfortunate thing about this is that parts, part name, and
# response if are delimited by underscores, but both the part	# response id are delimited by underscores, but both the part
# name and response id can themselves have underscores in them.	# name and response id can themselves have underscores in them.
# So we have to use our knowlege of part names to figure out	# So we have to use our knowlege of part names to figure out
# where the part names begin and end, and even then, it is possible	# where the part names begin and end, and even then, it is possible
# to construct ambiguous situations.	# to construct ambiguous situations.
foreach (split /,/, $metadata) {	foreach (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 = '';
my @partChunks = split /_/, $partStuff;	my @partChunks = split /_/, $partStuff;
my $i = 0;	my $i = 0;

for ($i = 0; $i < scalar(@partChunks); $i++) {	for ($i = 0; $i < scalar(@partChunks); $i++) {
if ($partIdSoFar) { $partIdSoFar .= '_'; }	if ($partIdSoFar) { $partIdSoFar .= '_'; }
$partIdSoFar .= $partChunks[$i];	$partIdSoFar .= $partChunks[$i];
Line 3583 sub extractParts {	Line 4392 sub extractParts {
my @otherChunks = @partChunks[$i+1..$#partChunks];	my @otherChunks = @partChunks[$i+1..$#partChunks];
my $responseId = join('_', @otherChunks);	my $responseId = join('_', @otherChunks);
push @{$responseIdHash{$partIdSoFar}}, $responseId;	push @{$responseIdHash{$partIdSoFar}}, $responseId;
$responseTypeHash{$partIdSoFar} = $responseType;	push @{$responseTypeHash{$partIdSoFar}}, $responseType;
last;
}	}
}	}
}	}
}	}
	my $resorder = &Apache::lonnet::metadata($self->src(),'responseorder');
	#
	# Reorder the arrays in the %responseIdHash and %responseTypeHash
	if ($resorder) {
	my @resorder=split(/,/,$resorder);
	foreach my $part (keys(%responseIdHash)) {
	my $i=0;
	my %resids = map { ($_,$i++) } @{ $responseIdHash{$part} };
	my @neworder;
	foreach my $possibleid (@resorder) {
	if (exists($resids{$possibleid})) {
	push(@neworder,$resids{$possibleid});
	}
	}
	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;
$self->{RESPONSE_TYPES} = \%responseTypeHash;	$self->{RESPONSE_TYPES} = \%responseTypeHash;
}	}
Line 3777 sub ATTEMPTED { return 16; }	Line 4608 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 seperate 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 3887 An answer has been submitted, but the st	Line 4722 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 3899 sub status {	Line 4735 sub status {
# dimension and 5 entries on the other, which we want to colorize,	# dimension and 5 entries on the other, which we want to colorize,
# plus network failure and "no date data at all".	# plus network failure and "no date data at all".

	#if ($self->{RESOURCE_ERROR}) { return NETWORK_FAILURE; }
if ($completionStatus == NETWORK_FAILURE) { return NETWORK_FAILURE; }	if ($completionStatus == NETWORK_FAILURE) { return NETWORK_FAILURE; }

my $suppressFeedback = lc($self->parmval("problemstatus", $part)) eq 'no';	my $suppressFeedback = $self->problemstatus($part) eq 'no';
	# If there's an answer date and we're past it, don't
	# suppress the feedback; student should know
	if ($self->duedate($part) && $self->duedate($part) < time() &&
	$self->answerdate($part) && $self->answerdate($part) < time()) {
	$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 3927 sub status {	Line 4784 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 $dateStatus;	return $suppressFeedback ? ANSWER_SUBMITTED : $dateStatus;
}	}

if ($dateStatus == ANSWER_OPEN) {	if ($dateStatus == ANSWER_OPEN) {
Line 3945 sub status {	Line 4802 sub status {
if ($completionStatus == INCORRECT \|\| $completionStatus == INCORRECT_BY_OVERRIDE) {	if ($completionStatus == INCORRECT \|\| $completionStatus == INCORRECT_BY_OVERRIDE) {
# and there are TRIES LEFT:	# and there are TRIES LEFT:
if ($self->tries($part) < $self->maxtries($part) \|\| !$self->maxtries($part)) {	if ($self->tries($part) < $self->maxtries($part) \|\| !$self->maxtries($part)) {
return $suppressFeedback ? ANSWER_SUBMITTED : TRIES_LEFT;	return $suppressFeedback ? ANSWER_SUBMITTED : TRIES_LEFT;
}	}
return $suppressFeedback ? ANSWER_SUBMITTED : INCORRECT; # otherwise, return orange; student can't fix this	return $suppressFeedback ? ANSWER_SUBMITTED : INCORRECT; # otherwise, return orange; student can't fix this
}	}

Line 3954 sub status {	Line 4811 sub status {
return OPEN;	return OPEN;
}	}

	sub CLOSED { return 23; }
	sub ERROR { return 24; }

	=pod

	B<Simple Status>

	Convenience method B<simpleStatus> provides a "simple status" for the resource.
	"Simple status" corresponds to "which icon is shown on the
	Navmaps". There are six "simple" statuses:

	=over 4

	=item * B<CLOSED>: The problem is currently closed. (No icon shown.)

	=item * B<OPEN>: The problem is open and unattempted.

	=item * B<CORRECT>: The problem is correct for any reason.

	=item * B<INCORRECT>: The problem is incorrect and can still be
	completed successfully.

	=item * B<ATTEMPTED>: The problem has been attempted, but the student
	does not know if they are correct. (The ellipsis icon.)

	=item * B<ERROR>: There is an error retrieving information about this
	problem.

	=back

	=cut

	# This hash maps the composite status to this simple status, and
	# can be used directly, if you like
	my %compositeToSimple =
	(
	NETWORK_FAILURE() => ERROR,
	NOTHING_SET() => CLOSED,
	CORRECT() => CORRECT,
	PARTIALLY_CORRECT() => PARTIALLY_CORRECT,
	EXCUSED() => CORRECT,
	PAST_DUE_NO_ANSWER() => INCORRECT,
	PAST_DUE_ANSWER_LATER() => INCORRECT,
	ANSWER_OPEN() => INCORRECT,
	OPEN_LATER() => CLOSED,
	TRIES_LEFT() => OPEN,
	INCORRECT() => INCORRECT,
	OPEN() => OPEN,
	ATTEMPTED() => ATTEMPTED,
	ANSWER_SUBMITTED() => ATTEMPTED
	);

	sub simpleStatus {
	my $self = shift;
	my $part = shift;
	my $status = $self->status($part);
	return $compositeToSimple{$status};
	}

	=pod

	B<simpleStatusCount> will return an array reference containing, in
	this order, the number of OPEN, CLOSED, CORRECT, INCORRECT, ATTEMPTED,
	and ERROR parts the given problem has.

	=cut

	# This maps the status to the slot we want to increment
	my %statusToSlotMap =
	(
	OPEN() => 0,
	CLOSED() => 1,
	CORRECT() => 2,
	INCORRECT() => 3,
	ATTEMPTED() => 4,
	ERROR() => 5
	);

	sub statusToSlot { return $statusToSlotMap{shift()}; }

	sub simpleStatusCount {
	my $self = shift;

	my @counts = (0, 0, 0, 0, 0, 0, 0);
	foreach my $part (@{$self->parts()}) {
	$counts[$statusToSlotMap{$self->simpleStatus($part)}]++;
	}

	return \@counts;
	}

=pod	=pod

B<Completable>	B<Completable>
Line 4023 sub getNext {	Line 4971 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 4051 sub browsePriv {	Line 5000 sub browsePriv {
return $self->{BROWSE_PRIV};	return $self->{BROWSE_PRIV};
}	}

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

=pod	=pod

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

Removed from v.1.219.2.1
changed lines
	Added in v.1.371