loncom/homework/structuretags.pm - diff

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Diff for /loncom/homework/structuretags.pm between versions 1.170 and 1.318

version 1.170, 2003/05/12 13:50:08	version 1.318, 2005/11/08 21:09:08
Line 25	Line 25
#	#
# http://www.lon-capa.org/	# http://www.lon-capa.org/
#	#
# 2/19 Guy	###
# 6/26/2001 fixed extra web display at end of <web></web> tags
# 8/17,8/18,8/20 Gerd Kortemeyer


package Apache::structuretags;	package Apache::structuretags;
Line 36 use strict;	Line 34 use strict;
use Apache::lonnet;	use Apache::lonnet;
use Apache::File();	use Apache::File();
use Apache::lonmenu;	use Apache::lonmenu;
	use Apache::lonlocal;
	use Apache::lonxml;
	use Time::HiRes qw( gettimeofday tv_interval );
BEGIN {	BEGIN {
&Apache::lonxml::register('Apache::structuretags',('block','languageblock','instructorcomment','while','randomlist','problem','library','web','tex','part','preduedate','postanswerdate','solved','notsolved','startouttext','endouttext'));	&Apache::lonxml::register('Apache::structuretags',('block','languageblock','instructorcomment','while','randomlist','problem','library','web','tex','part','preduedate','postanswerdate','solved','notsolved','problemtype','startouttext','endouttext','simpleeditbutton','definetag'));
}	}

sub start_web {	sub start_web {
Line 56 sub end_web {	Line 56 sub end_web {

sub start_tex {	sub start_tex {
my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;	my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
	my $result='';
my $bodytext=&Apache::lonxml::get_all_text("/tex",$parser);	my $bodytext=&Apache::lonxml::get_all_text("/tex",$parser);
if ($target eq 'tex') {	if ($target eq 'tex') {
return $bodytext.' ';	return $bodytext.' ';
}	}
return '';	return $result;;
}	}

sub end_tex {	sub end_tex {
return '';	return '';
}	}

	sub body_tag_start {
	my ($target,$background,$bgcolor)=@_;
	my $body_tag_start='<body onload="'.&Apache::lonmenu::loadevents().'" '.
	'onunload="'.&Apache::lonmenu::unloadevents().'" ';
	if ($env{'browser.imagesuppress'} eq 'on') { $background=''; }
	if ($background) {
	&Apache::lonxml::extlink($background);
	$body_tag_start.='background="'.$background.'" ';
	} else {
	if (($bgcolor) && ($env{'browser.blackwhite'} ne 'on')) {
	$body_tag_start.='bgcolor="'.$bgcolor.'" ';
	} else {
	$body_tag_start.='bgcolor="#ffffff"';
	}
	}
	if ($env{'browser.fontenhance'} eq 'on') {
	$body_tag_start.=' style="font-size: x-large;" ';
	}
	$body_tag_start.='>'.&Apache::lonmenu::menubuttons(undef,$target,1);

	&Apache::lontexconvert::jsMath_reset();
	if ($env{'environment.texengine'} eq 'jsMath') {
	$body_tag_start.=&Apache::lontexconvert::jsMath_header();
	}
	return $body_tag_start;
	}

sub page_start {	sub page_start {
my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;	my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
my %found;	my %found;
foreach my $taginside ($tagstack) {	foreach my $taginside (@$tagstack) {
foreach my $taglookedfor ('html','body','form') {	foreach my $taglookedfor ('html','body','form') {
if ($taginside =~ /^$taglookedfor$/i) {$found{$taglookedfor} = 1;}	if ($taginside =~ /^$taglookedfor$/i) {$found{$taglookedfor} = 1;}
}	}
Line 81 sub page_start {	Line 109 sub page_start {
if (!defined($found{'html'})) {	if (!defined($found{'html'})) {
$result=&Apache::londefdef::start_html($target,$token,$tagstack,	$result=&Apache::londefdef::start_html($target,$token,$tagstack,
$parstack,$parser,$safeeval);	$parstack,$parser,$safeeval);
$head_tag_start='<head>'.&Apache::lonmenu::registerurl(undef,$target);	$head_tag_start='<head>'.&Apache::lonmenu::registerurl(undef,$target).
	&Apache::lonhtmlcommon::htmlareaheaders().
	&Apache::lonhtmlcommon::spellheader().
	&Apache::lonxml::fontsettings();
}	}
my $body_tag_start;	my $body_tag_start;
if (!defined($found{'body'})) {	if (!defined($found{'body'}) && $env{'request.state'} eq 'construct') {
$body_tag_start='<body onLoad="'.&Apache::lonmenu::loadevents().'" '.	if ($env{'environment.remote'} eq 'off') {
'onUnload="'.&Apache::lonmenu::unloadevents().'" ';	if ($target eq 'web' \|\| $target eq 'edit') {
my $background=&Apache::lonxml::get_param('background',$parstack,	$body_tag_start=&Apache::loncommon::bodytag();
$safeeval);	$body_tag_start.=&Apache::lonxml::message_location();
if ($background) {	}
$Apache::lonxml::extlinks[$#Apache::lonxml::extlinks+1]=
$background;
$body_tag_start.='background="'.$background.'" ';
} else {	} else {
my $bgcolor=&Apache::lonxml::get_param('bgcolor',$parstack,	if ($target eq 'web' \|\| $target eq 'edit') {
$safeeval);	$body_tag_start=&Apache::loncommon::bodytag(undef,undef,undef,1);
if ($bgcolor) {	$body_tag_start.=&Apache::lonxml::message_location();
$body_tag_start.='bgcolor="'.$bgcolor.'" ';
} else {
$body_tag_start.='bgcolor="#ffffff"';
}	}
}	}
$body_tag_start.='>'.&Apache::lonmenu::menubuttons(undef,$target,1);	} elsif (!defined($found{'body'})) {
if ($target eq 'web' && $ENV{'request.state'} ne 'construct') {	my $background=&Apache::lonxml::get_param('background',$parstack,
	$safeeval);
	my $bgcolor=&Apache::lonxml::get_param('bgcolor',$parstack,
	$safeeval);
	$body_tag_start=&body_tag_start($target,$background,$bgcolor);
	if ( ($target eq 'web' \|\| $target eq 'webgrade')
	&& $env{'request.state'} ne 'construct') {
my ($symb,undef,undef,undef,$publicuser)=	my ($symb,undef,undef,undef,$publicuser)=
&Apache::lonxml::whichuser();	&Apache::lonxml::whichuser();
if ($symb eq '' && !$publicuser) {	if ($symb eq '' && !$publicuser) {
my $help = &Apache::loncommon::help_open_topic("Ambiguous_Reference");	my $help = &Apache::loncommon::help_open_topic("Ambiguous_Reference");
$help="Browsing resource, all submissions are temporary.<br />";	$help=&mt("Browsing resource, all submissions are temporary.")."<br />";
$body_tag_start.=$help;	$body_tag_start.=$help;
}	}
}	}
	$body_tag_start.=&Apache::lonxml::message_location();
}	}
my $form_tag_start;	my $form_tag_start;
if (!defined($found{'form'})) {	if (!defined($found{'form'})) {
$form_tag_start='<form name="lonhomework" method="POST" action="'.	$form_tag_start='<form name="lonhomework" enctype="multipart/form-data" method="POST" action="';
$ENV{'request.uri'}.'">';	my $uri=$env{'request.uri'};
	if ($env{'request.enc'}) { $uri=&Apache::lonenc::encrypted($uri); }
	$form_tag_start.=$uri.'">';
}	}
return ($result,$head_tag_start,$body_tag_start,$form_tag_start);	return ($result,$head_tag_start,$body_tag_start,$form_tag_start);
}	}
Line 124 sub page_start {	Line 158 sub page_start {
#use Time::HiRes();	#use Time::HiRes();
sub get_resource_name {	sub get_resource_name {
my ($parstack,$safeeval)=@_;	my ($parstack,$safeeval)=@_;
my $name=&Apache::lonnet::gettitle();	if (defined($Apache::lonhomework::name)) {
	return $Apache::lonhomework::name;
	}
	my ($symb)=&Apache::lonxml::whichuser();
	my $name=&Apache::lonnet::gettitle($symb);
if ($name eq '') {	if ($name eq '') {
$name=&Apache::lonnet::EXT('resource.title');	$name=&Apache::lonnet::EXT('resource.title');
if ($name eq 'con_lost') { $name = ''; }	if ($name eq 'con_lost') { $name = ''; }
}	}
	if ($name!~/\S+/) {
	$name=$env{'request.uri'};
	$name=~s-.*/([^/]+)$-$1-;
	}
$Apache::lonhomework::name=$name;	$Apache::lonhomework::name=$name;
return $name;	return $name;
}	}
Line 137 sub setup_rndseed {	Line 179 sub setup_rndseed {
my ($safeeval)=@_;	my ($safeeval)=@_;
my $rndseed;	my $rndseed;
my ($symb)=&Apache::lonxml::whichuser();	my ($symb)=&Apache::lonxml::whichuser();
if ($ENV{'request.state'} eq "construct" \|\| $symb eq '') {	if ($env{'request.state'} eq "construct" \|\| $symb eq '' \|\|
$rndseed=$ENV{'form.rndseed'};	$Apache::lonhomework::history{'resource.CODE'}) {
	&Apache::loncommon::get_unprocessed_cgi($ENV{'QUERY_STRING'},
	['rndseed']);
	$rndseed=$env{'form.rndseed'};
if (!$rndseed) {	if (!$rndseed) {
$rndseed=$Apache::lonhomework::history{'rndseed'};	$rndseed=$Apache::lonhomework::history{'rndseed'};
if (!$rndseed) {	if (!$rndseed) {
$rndseed=time;	$rndseed=time;
$ENV{'form.rndseed'}=$rndseed;
}	}
	$env{'form.rndseed'}=$rndseed;
}	}
if ($ENV{'form.resetdata'} eq 'New Problem Variation') {	if ($env{'form.resetdata'} eq &mt('New Problem Variation') \|\|
$rndseed=time;	$env{'form.newrandomization'} eq &mt('New Randomization')) {
$ENV{'form.rndseed'}=$rndseed;	srand(time);
	$rndseed=int(rand(2100000000));
	$env{'form.rndseed'}=$rndseed;
	delete($env{'form.resetdata'});
	delete($env{'form.newrandomization'});
	}
	if (defined($rndseed) && $rndseed ne int($rndseed)) {
	$rndseed=join(':',&Apache::lonnet::digest($rndseed));
	}
	if ($Apache::lonhomework::history{'resource.CODE'}) {
	$rndseed=&Apache::lonnet::rndseed();
	}
	if ($safeeval) {
	&Apache::lonxml::debug("Setting rndseed to $rndseed");
	&Apache::run::run('$external::randomseed="'.$rndseed.'";',$safeeval);
}	}
&Apache::lonxml::debug("Setting rndseed to $rndseed");
&Apache::run::run('$external::randomseed='.$rndseed.';',$safeeval);
}	}
return $rndseed;	return $rndseed;
}	}

	sub remember_problem_state {
	return '
	<input type="hidden" name="problemstate" value="'.$env{'form.problemstate'}.'" />
	<input type="hidden" name="problemtype" value="'.$env{'form.problemtype'}.'" />
	<input type="hidden" name="problemstatus" value="'.$env{'form.problemstatus'}.'" />';
	}

sub problem_edit_header {	sub problem_edit_header {
return '<input type="hidden" name="submitted" value="edit" />	return '<input type="hidden" name="submitted" value="edit" />'.
<input type="hidden" name="problemmode" value="Edit" />	&Apache::structuretags::remember_problem_state().'
<input type="submit" name="problemmode" value="Discard Edits and View" />	<input type="hidden" name="problemmode" value="'.&mt('Edit').'" />
<input type="submit" name="problemmode" value="EditXML" />	<input type="submit" name="problemmode" accesskey="d" value="'.&mt('Discard Edits and View').'" />
<input type="submit" name="Undo" value="undo" /> <hr />	<input type="submit" name="problemmode" accesskey="x" value="'.&mt('EditXML').'" />
<input type="submit" name="submit" value="Submit Changes and Edit" />	<input type="submit" name="Undo" accesskey="u" value="'.&mt('undo').'" /> <hr />
<input type="submit" name="submit" value="Submit Changes and View" /><br /><p> </p><table border="0"><tr><td bgcolor="#DDDDDD">	<input type="submit" name="submit" accesskey="s" value="'.&mt('Submit Changes and Edit').'" />
';	<input type="submit" name="submit" accesskey="v" value="'.&mt('Submit Changes and View').'" /><table><tr><td>'.
	&Apache::loncommon::help_open_menu('','Problem Editing Help','Problem_Editor_XML_Index','',5,'Authoring',undef,undef,undef,'Problem Editing Help')
	.'</td></tr></table>'.
	'<table border="0" width="100%"><tr><td bgcolor="#DDDDDD">';
}	}

sub problem_edit_footer {	sub problem_edit_footer {
return '</td></tr></table><br /><input type="submit" name="submit" value="Submit Changes and Edit" />	return '</td></tr></table><br /><input type="submit" name="submit" value="'.&mt('Submit Changes and Edit').'" />
<input type="submit" name="submit" value="Submit Changes and View" />';	<input type="submit" name="submit" value="'.&mt('Submit Changes and View').'" />'.
	&Apache::lonhtmlcommon::htmlareaselectactive(@Apache::lonxml::htmlareafields).
	"\n</form>\n".&Apache::loncommon::endbodytag()."\n</html>";
	}

	sub option {
	my ($value,$name) = @_;
	my $result ="<option value='".$value."' ";
	if ($env{'form.'.$name} eq $value) {
	$result.=" selected='on' ";
	}
	$result.='>';
	return $result;
}	}

sub problem_web_to_edit_header {	sub problem_web_to_edit_header {
my ($rndseed)=@_;	my ($rndseed)=@_;
my $result.='<input type="hidden" name="problemmode" value="View" />	my $result.='<input type="hidden" name="problemmode" value="'.&mt('View').'" />';
<input type="submit" name="problemmode" value="Edit" />	if (!$Apache::lonhomework::parsing_a_task) {
<input type="submit" name="problemmode" value="EditXML" />	$result .= '<input type="submit" name="problemmode" accesskey="e" value="'.&mt('Edit').'" />';
Random Seed:<input type="text" name="rndseed" width="10" value="'.	}
$rndseed.'" />	$result .= '<input type="submit" name="problemmode" accesskey="x" value="'.&mt('EditXML').'" />
<input type="submit" name="changerandseed" value="Change" />	<input type="submit" name="newrandomization" accesskey="a" value="'.&mt('New Randomization').'" />
<input type="submit" name="resetdata" value="Reset Submissions" />	<input type="submit" name="resetdata" accesskey="r" value="'.&mt('Reset Submissions').'" />
<input type="checkbox" name="showallfoils" ';	<nobr><input type="submit" name="changerandseed" value="'.&mt('Change Random Seed To:').'" />
if (defined($ENV{'form.showallfoils'})) { $result.='checked="on"'; }	<input type="text" name="rndseed" size="10" value="'.
$result.= ' /> Show All Foils	$rndseed.'"
<hr />';	onchange="javascript:document.lonhomework.changerandseed.click()" /></nobr>
my $numtoanalyze=$ENV{'form.numtoanalyze'};	<label><input type="checkbox" name="showallfoils" ';
if (!$numtoanalyze) { $numtoanalyze=100; }	my $show_all_foils_text =
$result.= '<input type="submit" name="problemmode" value="Answer Distribution" />	($Apache::lonhomework::parsing_a_task) ?
	&mt(' Show All Instances')
	: &mt(' Show All Foils');

	if (defined($env{'form.showallfoils'})) { $result.='checked="on"'; }
	$result.= ' />'.$show_all_foils_text.
	&Apache::loncommon::help_open_topic('Problem_Editor_Testing_Area','Testing Problems').
	'</label><hr />';
	if (!$Apache::lonhomework::parsing_a_task) {
	$result.="
	<nobr>
	Problem Status:
	<select name='problemstate'>
	<option value=''></option>
	".&option('CLOSED' ,'problemstate').&mt("Closed")."</option>
	".&option('CAN_ANSWER' ,'problemstate').&mt("Answerable")."</option>
	".&option('CANNOT_ANSWER_tries' ,'problemstate').&mt("Open with full tries")."</option>
	".&option('CANNOT_ANSWER_correct','problemstate').&mt("Open and correct")."</option>
	".&option('SHOW_ANSWER' ,'problemstate').&mt("Show Answer")."</option>
	</select>
	</nobr>
	<nobr>
	Problem Type:
	<select name='problemtype'>
	<option value=''></option>
	".&option('exam' ,'problemtype').&mt("Exam Problem")."</option>
	".&option('problem','problemtype').&mt("Homework problem")."</option>
	".&option('survey' ,'problemtype').&mt("Survey Question")."</option>
	</select>
	</nobr>
	<nobr>
	Feedback Mode:
	<select name='problemstatus'>
	<option value=''></option>
	".&option('yes','problemstatus').&mt("Show Feedback")."</option>
	".&option('no', 'problemstatus').&mt("Don't Show Feedback")."</option>
	</select>
	</nobr>
	<input type='submit' name='changeproblemmode' value='".&mt("Change")."' />
	<hr />";
	my $numtoanalyze=$env{'form.numtoanalyze'};
	if (!$numtoanalyze) { $numtoanalyze=20; }
	$result.= '<input type="submit" name="problemmode" value='.
	&mt('"Calculate answers').'" /> for
<input type="text" name="numtoanalyze" value="'.	<input type="text" name="numtoanalyze" value="'.
$numtoanalyze.'" size="5" /> <hr />';	$numtoanalyze.'" size="5" /> '.&mt('versions of this problem').
	'.'.&Apache::loncommon::help_open_topic("Analyze_Problem",
	'',undef,undef,300).
	'<hr />';
	}
return $result;	return $result;
}	}

Line 197 sub initialize_storage {	Line 323 sub initialize_storage {
%Apache::lonhomework::results=();	%Apache::lonhomework::results=();
%Apache::lonhomework::history=();	%Apache::lonhomework::history=();
my ($symb,$courseid,$domain,$name) = &Apache::lonxml::whichuser();	my ($symb,$courseid,$domain,$name) = &Apache::lonxml::whichuser();
if ($ENV{'request.state'} eq 'construct' \|\| $symb eq '') {	if ($env{'request.state'} eq 'construct' \|\| $symb eq '') {
%Apache::lonhomework::history=	%Apache::lonhomework::history=
&Apache::lonnet::tmprestore($ENV{'request.uri'},'',$domain,$name);	&Apache::lonnet::tmprestore($env{'request.uri'},'',$domain,$name);
my ($temp)=keys %Apache::lonhomework::history ;	my ($temp)=keys %Apache::lonhomework::history ;
&Apache::lonxml::debug("Return message of $temp");	&Apache::lonxml::debug("Return message of $temp");
} else {	} else {
Line 215 sub initialize_storage {	Line 341 sub initialize_storage {
# Stores away the result has to a student's environment	# Stores away the result has to a student's environment
# checks form.grade_ for specific values, other wises stores	# checks form.grade_ for specific values, other wises stores
# to the running users environment	# to the running users environment
	# Will increment totals for attempts, students, and corrects
	# if running user has student role.
sub finalize_storage {	sub finalize_storage {
my $result;	my $result;
my ($temp) = keys %Apache::lonhomework::results;	if (%Apache::lonhomework::results) {
if ( $temp ne '' ) {
my ($symb,$courseid,$domain,$name) = &Apache::lonxml::whichuser();	my ($symb,$courseid,$domain,$name) = &Apache::lonxml::whichuser();
if ($ENV{'request.state'} eq 'construct' \|\| $symb eq '') {	if ($env{'request.state'} eq 'construct' \|\| $symb eq '') {
$Apache::lonhomework::results{'rndseed'}=$ENV{'form.rndseed'};	$Apache::lonhomework::results{'rndseed'}=$env{'form.rndseed'};
$result=&Apache::lonnet::tmpstore(\%Apache::lonhomework::results,	$result=&Apache::lonnet::tmpstore(\%Apache::lonhomework::results,
$ENV{'request.uri'},'',$domain,$name);	$env{'request.uri'},'',$domain,$name);
&Apache::lonxml::debug('Construct Store return message:'.$result);	&Apache::lonxml::debug('Construct Store return message:'.$result);
} else {	} else {
$result=&Apache::lonnet::cstore(\%Apache::lonhomework::results,	$result=&Apache::lonnet::cstore(\%Apache::lonhomework::results,
$symb,$courseid,$domain,$name);	$symb,$courseid,$domain,$name);
&Apache::lonxml::debug('Store return message:'.$result);	&Apache::lonxml::debug('Store return message:'.$result);
	if ($env{'request.role'} =~/^st/) {
	&store_aggregates($symb,$courseid);
	}
}	}
}	}
return $result;	return $result;
}	}
	use Data::Dumper;

	# -------------------------------------------------------------store_aggregates
	# Sends hash of values to be incremented in nohist_resourcetracker.db
	# for the course. Increments total number of attempts, unique students
	# and corrects for each part for an instance of a problem, as appropriate.
	sub store_aggregates {
	my ($symb,$courseid) = @_;
	my %aggregate;
	my @parts;
	my $cdomain = $env{'course.'.$env{'request.course.id'}.'.domain'};
	my $cname = $env{'course.'.$env{'request.course.id'}.'.num'};
	foreach my $key (keys(%Apache::lonhomework::results)) {
	if ($key =~ /resource\.([^\.]+)\.tries/) {
	push(@parts, $1);
	}
	}
	foreach my $part (@parts) {
	if ($Apache::lonhomework::results{'resource.'.$part.'.award'}
	eq 'APPROX_ANS' \|\|
	$Apache::lonhomework::results{'resource.'.$part.'.award'}
	eq 'EXACT_ANS') {
	$aggregate{$symb."\0".$part."\0correct"} = 1;
	}
	if ($Apache::lonhomework::results{'resource.'.$part.'.tries'} == 1) {
	$aggregate{$symb."\0".$part."\0users"} = 1;
	} else {
	my (undef,$last_reset) = &Apache::grades::get_last_resets($symb,$env{'request.course.id'},[$part]);
	if ($last_reset) {
	if (&Apache::grades::get_num_tries(\%Apache::lonhomework::history,$last_reset,$part) == 0) {
	$aggregate{$symb."\0".$part."\0users"} = 1;
	}
	}
	}
	$aggregate{$symb."\0".$part."\0attempts"} = 1;
	}
	if (keys (%aggregate) > 0) {
	&Apache::lonnet::cinc('nohist_resourcetracker',\%aggregate,
	$cdomain,$cname);
	}
	}

sub checkout_msg {	sub checkout_msg {
	my %lt=&Apache::lonlocal::texthash(
	'resource'=>'The resource needs to be checked out',
	'id_expln'=>'As a resource gets checked out, a unique timestamped ID is given to it, and a permanent record is left in the system.',
	'warning'=>'Checking out resources is subject to course policies, and may exclude future credit even if done erroneously.',
	'checkout'=>'Check out Exam for Viewing',
	'checkout?'=>'Check out Exam?');
return (<<ENDCHECKOUT);	return (<<ENDCHECKOUT);
<h2>The resource needs to be checked out</h2>	<h2>$lt{'resource'}</h2>
As a resource gets checked out, a unique timestamped ID is given to it, and a	<p>$lt{'id_expln'}</p>
permanent record is left in the system.<p />	<font color="red">
<font color=red>	<p>$lt{'warning'}</p>
Checking out resources is subject to course policies, and may exclude future
credit even if done erroneously.<p />
</font>	</font>
<form name="checkout" method="POST" action="$ENV{'request.uri'}">	<form name="checkout" method="POST" action="$env{'request.uri'}">
<input type="hidden" name="doescheckout" value="yes" />	<input type="hidden" name="doescheckout" value="yes" />
<input type="button" name="checkoutbutton" value="Check out Exam for Viewing" onClick="javascript:if (confirm('Check out Exam?')) { document.checkout.submit(); }" />	<input type="button" name="checkoutbutton" value="$lt{'checkout'}" onClick="javascript:if (confirm('$lt{'checkout?'}')) { document.checkout.submit(); }" />
</form>	</form>
ENDCHECKOUT	ENDCHECKOUT
}	}

sub start_problem {	sub firstaccess_msg {
my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;	my ($time,$symb)=@_;
	my ($map)=&Apache::lonnet::decode_symb($symb);
	my $foldertitle=&Apache::lonnet::gettitle($map);
	&Apache::lonxml::debug("map is $map title is $foldertitle");
	return (<<ENDCHECKOUT);
	<h2>The resources in "$foldertitle" are open for a limited time. Once you click the 'Show Resource' button below you have $time to complete all resources "$foldertitle".</h2>
	<form name="markaccess" method="POST" action="$env{'request.uri'}">
	<input type="hidden" name="markaccess" value="yes" />
	<input type="button" name="accessbutton" value="Show Resource" onClick="javascript:if (confirm('Start Timer?')) { document.markaccess.submit(); }" />
	</form>
	ENDCHECKOUT
	}

$Apache::lonhomework::parsing_a_problem=1;	sub init_problem_globals {
# meta is called from lonpublisher, which doesn't uses the normal	my ($type)=@_;
# lonhomework method of parsing the file which means that inputtags	#initialize globals
# won't get reset	# For problems, we start out in part 0 (outside a <part> tag).
if ( $Apache::inputtags::part ne '' && $target != 'meta' ) {	# and part 0 is used to describe the main body of the <problem>
&Apache::lonxml::error('Only one problem allowed in a .problem file');	#
my $bodytext=&Apache::lonxml::get_all_text("/problem",$parser);	if ($type eq 'problem') {
return '';	$Apache::inputtags::part='0';
	@Apache::inputtags::partlist=('0');
	$Apache::lonhomework::problemstatus=&get_problem_status('0');
	$Apache::lonhomework::ignore_response_errors=0;

	} elsif ($type eq 'library') {
	$Apache::inputtags::part='';
	@Apache::inputtags::partlist=();
	$Apache::lonhomework::problemstatus='';
	$Apache::lonhomework::ignore_response_errors=1;

	} elsif ($type eq 'Task') {
	$Apache::inputtags::part='0';
	@Apache::inputtags::partlist=('0');
	$Apache::lonhomework::problemstatus='';
	$Apache::lonhomework::ignore_response_errors=1;
}	}
#initialize globals
$Apache::inputtags::part='0';
@Apache::inputtags::responselist = ();	@Apache::inputtags::responselist = ();
	@Apache::inputtags::importlist = ();
@Apache::inputtags::previous=();	@Apache::inputtags::previous=();
@Apache::inputtags::previous_version=();	@Apache::inputtags::previous_version=();
$Apache::structuretags::printanswer='No';	$Apache::structuretags::printanswer='No';
Line 272 sub start_problem {	Line 472 sub start_problem {
@Apache::structuretags::whilebody=();	@Apache::structuretags::whilebody=();
@Apache::structuretags::whileline=();	@Apache::structuretags::whileline=();
$Apache::lonhomework::scantronmode=0;	$Apache::lonhomework::scantronmode=0;
$Apache::lonhomework::problemstatus=	undef($Apache::lonhomework::name);
&Apache::lonnet::EXT('resource.0.problemstatus');

if (defined($ENV{'scantron.maxquest'})) {	}

	sub reset_problem_globals {
	my ($type)=@_;
	undef(%Apache::lonhomework::history);
	undef(%Apache::lonhomework::results);
	undef($Apache::inputtags::part);
	#don't undef this, lonhomework.pm takes care of this, we use this to
	#detect if we try to do 2 problems in one file
	# undef($Apache::lonhomework::parsing_a_problem);
	undef($Apache::lonhomework::name);
	}

	sub set_problem_state {
	my ($part)=@_;
	if ($env{'form.problemstate'} eq 'CANNOT_ANSWER_correct') {
	$Apache::lonhomework::history{"resource.$part.solved"}=
	'correct_by_student';
	}
	}

	sub get_problem_status {
	my ($part)=@_;
	my $problem_status;
	if ($env{'request.state'} eq 'construct' &&
	defined($env{'form.problemstatus'})) {
	$problem_status=$env{'form.problemstatus'};
	} else {
	$problem_status=&Apache::lonnet::EXT("resource.$part.problemstatus");
	&Apache::lonxml::debug("problem status for $part is $problem_status");
	&Apache::lonxml::debug("env probstat is ".$env{'form.problemstatus'});
	}
	return $problem_status;
	}

	sub start_problem {
	my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;

	# We'll use the redirection to fix up printing of duedates.
	&Apache::lonxml::startredirection();

	# Problems don't nest and we don't allow more than one <problem> in
	# a .problem file.
	#
	if ( $Apache::inputtags::part ne '' \|\|
	$Apache::lonhomework::parsing_a_problem) {
	&Apache::lonxml::error('Only one <problem> allowed in a .problem file');
	#my $bodytext=&Apache::lonxml::get_all_text("/problem",$parser);
	return '';
	}

	$Apache::lonhomework::parsing_a_problem=1;
	&init_problem_globals('problem');

	if (defined($env{'scantron.maxquest'})) {
$Apache::lonhomework::scantronmode=1;	$Apache::lonhomework::scantronmode=1;
}	}

	&initialize_storage();
if ($target ne 'analyze') {	if ($target ne 'analyze') {
&initialize_storage();
if ($target eq 'web') {	if ($target eq 'web') {
&Apache::lonhomework::showhash(%Apache::lonhomework::history);	&Apache::lonhomework::showhash(%Apache::lonhomework::history);
}	}
	if ($env{'request.state'} eq 'construct') { &set_problem_state('0'); }
$Apache::lonhomework::type=&Apache::lonnet::EXT('resource.0.type');	$Apache::lonhomework::type=&Apache::lonnet::EXT('resource.0.type');
&Apache::lonxml::debug("Found this to be of type :$Apache::lonhomework::type:");	if (($env{'request.state'} eq 'construct') &&
	defined($env{'form.problemtype'})) {
	$Apache::lonhomework::type=$env{'form.problemtype'};
	}
	&Apache::lonxml::debug("Found this to be of type :$Apache::ltonhomework::type:");
}	}
if ($Apache::lonhomework::type eq '' ) {	if ($Apache::lonhomework::type eq '' ) {
my $uri=$ENV{'request.uri'};	my $uri=$env{'request.uri'};
if ($uri=~/\.(\w+)$/) {	if ($uri=~/\.(\w+)$/) {
$Apache::lonhomework::type=$1;	$Apache::lonhomework::type=$1;
&Apache::lonxml::debug("Using type of $1");	&Apache::lonxml::debug("Using type of $1");
Line 297 sub start_problem {	Line 555 sub start_problem {
&Apache::lonxml::debug("Using default type, problem, :$uri:");	&Apache::lonxml::debug("Using default type, problem, :$uri:");
}	}
}	}
	$Apache::lonhomework::default_type = $Apache::lonhomework::type;

#added vars to the scripting enviroment	#added vars to the scripting enviroment
my $expression='$external::part='.$Apache::inputtags::part.';';	my $expression='$external::part=\''.$Apache::inputtags::part.'\';';
	$expression.='$external::type=\''.$Apache::lonhomework::type.'\';';
&Apache::run::run($expression,$safeeval);	&Apache::run::run($expression,$safeeval);
my $status;	my $status;
my $accessmsg;	my $accessmsg;
Line 307 sub start_problem {	Line 567 sub start_problem {
#should get back a <html> or the neccesary stuff to start XML/MathML	#should get back a <html> or the neccesary stuff to start XML/MathML
my ($result,$head_tag_start,$body_tag_start,$form_tag_start)=	my ($result,$head_tag_start,$body_tag_start,$form_tag_start)=
&page_start($target,$token,$tagstack,$parstack,$parser,$safeeval);	&page_start($target,$token,$tagstack,$parstack,$parser,$safeeval);
if ($target eq 'tex' and $ENV{'request.symb'} =~ m/\.page_/) {$result='';}	if ($target eq 'tex' and $env{'request.symb'} =~ m/\.page_/) {$result='';}

if ($target eq 'analyze') { my $rndseed=&setup_rndseed($safeeval); }	if ($target eq 'analyze') { my $rndseed=&setup_rndseed($safeeval); }
if ($target eq 'web' \|\| $target eq 'grade' \|\| $target eq 'answer' \|\|	if ($target eq 'web' \|\| $target eq 'grade' \|\| $target eq 'answer' \|\|
Line 316 sub start_problem {	Line 576 sub start_problem {
if ($Apache::lonhomework::type eq 'exam') {	if ($Apache::lonhomework::type eq 'exam') {
my $token=	my $token=
$Apache::lonhomework::history{"resource.0.outtoken"};	$Apache::lonhomework::history{"resource.0.outtoken"};
if (($ENV{'form.doescheckout'}) && (!$token)) {	if (($env{'form.doescheckout'}) && (!$token)) {
$token=&Apache::lonxml::maketoken();	$token=&Apache::lonxml::maketoken();
$Apache::lonhomework::history{"resource.0.outtoken"}=	$Apache::lonhomework::history{"resource.0.outtoken"}=
$token;	$token;
}	}
$body_tag_start.=&Apache::lonxml::printtokenheader($target,$token);	$body_tag_start.=&Apache::lonxml::printtokenheader($target,$token);
}	}
	if ($env{'form.markaccess'}) {
	&Apache::lonnet::set_first_access('map');
	}
#handle rand seed in construction space	#handle rand seed in construction space
my $rndseed=&setup_rndseed($safeeval);	my $rndseed=&setup_rndseed($safeeval);
my ($symb)=&Apache::lonxml::whichuser();	my ($symb)=&Apache::lonxml::whichuser();
if ($ENV{'request.state'} ne "construct" && $symb eq '') {	if ($env{'request.state'} ne "construct" && $symb eq '') {
$form_tag_start.='<input type="hidden" name="rndseed" value="'.	$form_tag_start.='<input type="hidden" name="rndseed" value="'.
$rndseed.'" />'.	$rndseed.'" />'.
'<input type="submit" name="resetdata"	'<input type="submit" name="resetdata"
value="New Problem Variation" />'.	value="'.&mt('New Problem Variation').'" />'.
'<input type="hidden" name="username"	'<input type="hidden" name="username"
value="'.$ENV{'form.username'}.'" />';	value="'.$env{'form.username'}.'" />';
	if ($env{'user.adv'}) {
	$form_tag_start.=
	' <label><input type="checkbox" name="showallfoils" ';
	if (defined($env{'form.showallfoils'})) {
	$form_tag_start.='checked="on"';
	}
	$form_tag_start.= ' />'.&mt(' Show All Foils').
	'</label>';
	}
	$form_tag_start.='<hr />';
}	}
($status,$accessmsg) = &Apache::lonhomework::check_access('0');	($status,$accessmsg) = &Apache::lonhomework::check_access('0');
push (@Apache::inputtags::status,$status);	push (@Apache::inputtags::status,$status);
Line 343 sub start_problem {	Line 615 sub start_problem {
&Apache::lonxml::debug("Got $status");	&Apache::lonxml::debug("Got $status");
if (( $status eq 'CLOSED' ) \|\|	if (( $status eq 'CLOSED' ) \|\|
( $status eq 'UNCHECKEDOUT') \|\|	( $status eq 'UNCHECKEDOUT') \|\|
	( $status eq 'NOT_YET_VIEWED') \|\|
( $status eq 'BANNED') \|\|	( $status eq 'BANNED') \|\|
( $status eq 'UNAVAILABLE')) {	( $status eq 'UNAVAILABLE') \|\|
	( $status eq 'INVALID_ACCESS')) {
my $bodytext=&Apache::lonxml::get_all_text("/problem",$parser);	my $bodytext=&Apache::lonxml::get_all_text("/problem",$parser);
if ( $target eq "web" ) {	if ( $target eq "web" ) {
$result.= $head_tag_start.'</head>';	$result.= $head_tag_start.'</head>';
my $msg=$body_tag_start;	my $msg=$body_tag_start;
if ($status eq 'UNAVAILABLE') {	if ($status eq 'UNAVAILABLE') {
$result.='<h1>Unable to determine if this resource is open due to network problems. Please try again later.</h1>';	$msg.='<h1>'.&mt('Unable to determine if this resource is open due to network problems. Please try again later.').'</h1>';
} else {	} elsif ($status ne 'NOT_YET_VIEWED') {
$result.='<h1>Not open to be viewed</h1>';	$msg.='<h1>'.&mt('Not open to be viewed').'</h1>';
}	}
if ($status eq 'CLOSED') {	if ($status eq 'CLOSED' \|\| $status eq 'INVALID_ACCESS') {
$msg.='The problem '.$accessmsg;	$msg.='The problem '.$accessmsg;
} elsif ($status eq 'UNCHECKEDOUT') {	} elsif ($status eq 'UNCHECKEDOUT') {
$msg.=&checkout_msg;	$msg.=&checkout_msg;
	} elsif ($status eq 'NOT_YET_VIEWED') {
	$msg.=&firstaccess_msg($accessmsg,$symb);
}	}
$result.=$msg.'<br />';	$result.=$msg.'<br />';
} elsif ($target eq 'tex') {	} elsif ($target eq 'tex') {
$result.='\begin{document}\noindent \vskip 1 mm \begin{minipage}{\textwidth}\vskip 0 mm';	$result.='\begin{document}\noindent \vskip 1 mm \begin{minipage}{\textwidth}\vskip 0 mm';
if ($status eq 'UNAVAILABLE') {	if ($status eq 'UNAVAILABLE') {
$result.='Unable to determine if this resource is open due to network problems. Please try again later.\vskip 0 mm ';	$result.=&mt('Unable to determine if this resource is open due to network problems. Please try again later.').'\vskip 0 mm ';
} else {	} else {
$result.="Problem is not open to be viewed. It $accessmsg \\vskip 0 mm ";	$result.=&mt('Problem is not open to be viewed. It')." $accessmsg \\vskip 0 mm ";
}	}
}	}
} elsif ($target eq 'web') {	} elsif ($target eq 'web') {
my $name= &get_resource_name($parstack,$safeeval);	my $name= &get_resource_name($parstack,$safeeval);
if ($status eq 'CAN_ANSWER') {	$result.="$head_tag_start<title>$name</title></head>
# create a page header and exit
$result.="$head_tag_start<title>$name</title></head>
$body_tag_start \n $form_tag_start".	$body_tag_start \n $form_tag_start".
'<input type="hidden" name="submitted" value="yes" />';	'<input type="hidden" name="submitted" value="yes" />';
if ($ENV{'request.state'} eq "construct") {	# create a page header and exit
$result.= &problem_web_to_edit_header($rndseed);	if ($env{'request.state'} eq "construct") {
}	$result.= &problem_web_to_edit_header($env{'form.rndseed'});
# if we are viewing someone else preserve that info	}
if (defined $ENV{'form.grade_symb'}) {	# if we are viewing someone else preserve that info
foreach my $field ('symb','courseid','domain','username') {	if (defined $env{'form.grade_symb'}) {
$result .= '<input type="hidden" name="grade_'.$field.	foreach my $field ('symb','courseid','domain','username') {
'" value="'.$ENV{"form.grade_$field"}.'" />'."\n";	$result .= '<input type="hidden" name="grade_'.$field.
}	'" value="'.$env{"form.grade_$field"}.'" />'."\n";
}	}
} elsif ($status eq 'SHOW_ANSWER' \|\| $status eq 'CANNOT_ANSWER'
\|\| $status eq 'CLOSED' \|\| $status eq 'UNAVALAILABLE') {
$result.=$head_tag_start.
"<title>$name</title></head>\n$body_tag_start\n";
}	}
} elsif ($target eq 'tex') {	} elsif ($target eq 'tex') {
my $name= &Apache::lonxml::get_param('name',$parstack,$safeeval);	my $startminipage = '';
if ($name eq '') {	if (not $env{'form.problem_split'}=~/yes/) {
$name=&Apache::lonnet::EXT('resource.title');	$startminipage = '\begin{minipage}{\textwidth}';
if ($name eq 'con_lost') { $name = ''; }
}	}
$Apache::lonhomework::name=$name;
my $id = $Apache::inputtags::part;	my $id = $Apache::inputtags::part;
my $weight = &Apache::lonnet::EXT("resource.$id.weight");	my $weight = &Apache::lonnet::EXT("resource.$id.weight");
my $allkeys=&Apache::lonnet::metadata($ENV{'request.uri'},'keys');	my $packages=&Apache::lonnet::metadata($env{'request.uri'},'packages');
my @allkeys = split /,/,$allkeys;	my @packages = split /,/,$packages;
my $allow_print_points = 0;	my $allow_print_points = 0;
foreach my $partial_key (@allkeys) {	foreach my $partial_key (@packages) {
if ($partial_key=~m/weight/) {	if ($partial_key=~m/^part_0$/) {
$allow_print_points++;	$allow_print_points=1;
}	}
}	}
my $duedate = &Apache::lonnet::EXT("resource.$id.duedate");	my $maxtries = &Apache::lonnet::EXT("resource.$id.maxtries");
$duedate = POSIX::strftime("%c",localtime($duedate));	if (defined($maxtries) && $maxtries < 0) { $allow_print_points=0; }
	if (lc($env{'course.'.$env{'request.course.id'}.
	'.disableexampointprint'}) eq 'yes') {
	$allow_print_points=0;
	}
	my $name_of_resourse= &Apache::lonxml::latex_special_symbols(&get_resource_name($parstack,$safeeval),'header');
	my $begin_doc='\begin{document} \typeout{STAMPOFPASSEDRESOURCESTART Resource <h2>"'.$name_of_resourse.'"</h2> located in <br /><small><b>'.$env{'request.uri'}.'</b></small><br /> STAMPOFPASSEDRESOURCEEND} \noindent ';
	my $toc_line='\vskip 1 mm\noindent '.$startminipage.
	'\addcontentsline{toc}{subsection}{'.$name_of_resourse.'}';

	# Figure out what the due date is and if we need to print
	# it in the problem header. We have been logging the
	# last due date written to file.

	my $duetime = &Apache::lonnet::EXT("resource.$id.duedate");
	my $duedate = POSIX::strftime("%c",localtime($duetime));
my $temp_file;	my $temp_file;
my $filename = "/home/httpd/prtspool/$ENV{'user.name'}_$ENV{'user.domain'}_printout.due";	my $filename = "/home/httpd/prtspool/$env{'user.name'}_$env{'user.domain'}_printout.due";

	# Figure out what the last printed due date is or set it
	# to the epoch if no duedates have been printed.

	my $due_file_content = 0; # If the file does not yet exist, time is the epoch.
if (-e $filename) {	if (-e $filename) {
$temp_file = Apache::File->new($filename);	$temp_file = Apache::File->new($filename);
} else {	my @due_file = <$temp_file>;
$temp_file = Apache::File->new('>>'.$filename);	$due_file_content = $due_file[$#due_file];
}	chomp $due_file_content;
my @due_file_content = <$temp_file>;	}
my $due_file_content = $due_file_content[$#due_file_content];
chomp $due_file_content;	# comparisons of the absolute times
my $name_of_resourse= &get_resource_name($parstack,$safeeval);	if ($due_file_content != $duetime) {
if ($due_file_content ne $duedate) {
$temp_file = Apache::File->new('>'.$filename);	$temp_file = Apache::File->new('>'.$filename);
print $temp_file "$duedate\n";	print $temp_file "$duetime\n";
if (not $ENV{'request.symb'} =~ m/\.page_/) {	if (not $env{'request.symb'} =~ m/\.page_/) {
if(not $duedate=~m/1969/ and $Apache::lonhomework::type ne 'exam') {	if(not $duedate=~m/1969/ and $Apache::lonhomework::type ne 'exam') {
$result .= '\begin{document} \typeout{STAMPOFPASSEDRESOURCESTART Resource <h2>"'.$name_of_resourse.'"</h2> located in <br /><small><b>'.$ENV{'request.uri'}.'</b></small><br /> STAMPOFPASSEDRESOURCEEND} \noindent\textit{Due date: '.$duedate.'} \vskip 1 mm\noindent \begin{minipage}{\textwidth}';	$result .= $begin_doc.
	'\textit{Due date: '.$duedate.'} '.$toc_line;
} else {	} else {
$result .= '\begin{document} \typeout{STAMPOFPASSEDRESOURCESTART Resource <h2>"'.$name_of_resourse.'"</h2> located in <br /><small><b>'.$ENV{'request.uri'}.'</b></small><br /> STAMPOFPASSEDRESOURCEEND} \noindent \vskip 1 mm \noindent\begin{minipage}{\textwidth}';	$result .= $begin_doc.$toc_line;
if ($Apache::lonhomework::type eq 'exam' and $allow_print_points==1) { $result .= '\fbox{\textit{'.$weight.' pt}}';}	if ($Apache::lonhomework::type eq 'exam' and $allow_print_points==1) { $result .= '\fbox{\textit{'.$weight.' pt}}';}
}	}
} else {	} else {
$result .= '\vskip 1mm\textit{Due date: '.$duedate.'} \\\\\\\\';	$result .= '\vskip 1mm\textit{Due date: '.$duedate.'} \\\\\\\\';
}	}
} else {	} else {
if (not $ENV{'request.symb'} =~ m/\.page_/) {	if (not $env{'request.symb'} =~ m/\.page_/) {
$result .= '\begin{document} \typeout{STAMPOFPASSEDRESOURCESTART Resource <h2>"'.$name_of_resourse.'"</h2> located in <br /><small><b>'.$ENV{'request.uri'}.'</b></small><br /> STAMPOFPASSEDRESOURCEEND} \noindent \vskip 1 mm\noindent\begin{minipage}{\textwidth}';	$result .= $begin_doc.$toc_line;
if (($Apache::lonhomework::type eq 'exam') and ($allow_print_points==1)) { $result .= '\fbox{\textit{'.$weight.' pt}}';}	if (($Apache::lonhomework::type eq 'exam') and ($allow_print_points==1)) { $result .= '\fbox{\textit{'.$weight.' pt}}';}
} else {	} else {
$result .= '\vskip 1mm \\\\\\\\';	$result .= '\vskip 1mm \\\\\\\\';
Line 445 sub start_problem {	Line 733 sub start_problem {
} elsif ($target eq 'edit') {	} elsif ($target eq 'edit') {
$result.=$head_tag_start."</head>".$body_tag_start.$form_tag_start.	$result.=$head_tag_start."</head>".$body_tag_start.$form_tag_start.
&problem_edit_header();	&problem_edit_header();
	$Apache::lonxml::warnings_error_header=
	&mt("Editor Errors - these errors might not effect the running of the problem, but they will likely cause problems with further use of the Edit mode. Please use the EditXML mode to fix these errors.")."<br />";
my $temp=&Apache::edit::insertlist($target,$token);	my $temp=&Apache::edit::insertlist($target,$token);
$result.=$temp;	$result.=$temp;
} elsif ($target eq 'modified') {	} elsif ($target eq 'modified') {
Line 459 sub start_problem {	Line 749 sub start_problem {

sub end_problem {	sub end_problem {
my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;	my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
my $result='';	my $result= &Apache::lonxml::endredirection(); # started in &start_problem

my $status=$Apache::inputtags::status['-1'];	my $status=$Apache::inputtags::status['-1'];
if ($target eq 'grade' \|\| $target eq 'web' \|\| $target eq 'answer' \|\|	if ($target eq 'grade' \|\| $target eq 'web' \|\| $target eq 'answer' \|\|
$target eq 'tex') {	$target eq 'tex') {
if ( $target eq 'grade' && $Apache::inputtags::part eq '0' &&	if ( $target eq 'grade' && $Apache::inputtags::part eq '0') {
$status eq 'CAN_ANSWER' ) {
# if part is zero, no <part>s existed, so we need to the grading	# if part is zero, no <part>s existed, so we need to the grading
&Apache::inputtags::grade;	if ($status eq 'CAN_ANSWER' \|\|$Apache::lonhomework::scantronmode) {
	&Apache::inputtags::grade;
	} else {
	# move any submission data to .hidden
	&Apache::inputtags::hidealldata($Apache::inputtags::part);
	}
} elsif ( ($target eq 'web' \|\| $target eq 'tex') &&	} elsif ( ($target eq 'web' \|\| $target eq 'tex') &&
$Apache::inputtags::part eq '0' &&	$Apache::inputtags::part eq '0' &&
$status ne 'UNCHECKEDOUT') {	$status ne 'UNCHECKEDOUT' && $status ne 'NOT_YET_VIEWED') {
# if part is zero, no <part>s existed, so we need show the current	# if part is zero, no <part>s existed, so we need show the current
# grading status	# grading status
my $gradestatus = &Apache::inputtags::gradestatus($Apache::inputtags::part,$target);	my $gradestatus = &Apache::inputtags::gradestatus($Apache::inputtags::part,$target);
$result.= $gradestatus;	$result.= $gradestatus;
}	}
if (	if (
(($target eq 'web') && ($ENV{'request.state'} ne 'construct')) \|\|	(($target eq 'web') && ($env{'request.state'} ne 'construct')) \|\|
($target eq 'answer') \|\| ($target eq 'tex')	($target eq 'answer') \|\| ($target eq 'tex')
) {	) {
if ($status eq 'CAN_ANSWER') {	if ($target ne 'tex' &&
if ($target ne 'tex') {	$env{'form.answer_output_mode'} ne 'tex') {
$result.="</form></body>\n";	$result.="</form>";
}	$result.=&Apache::lonhtmlcommon::htmlareaselectactive(@Apache::lonxml::htmlareafields);
} elsif ($status eq 'SHOW_ANSWER' \|\| $status eq 'CANNOT_ANSWER' \|\|
$status eq 'UNCHECKEDOUT' ) {
if ($target ne 'tex') {
$result.="</body>\n";
}
}	}
if ($target eq 'web') {	if ($target eq 'web') {
$result.=&Apache::lonxml::xmlend();	$result.=&Apache::lonxml::xmlend().'</html>';
} elsif ($target eq 'tex') {	} elsif ($target eq 'tex') {
$result .= '\vskip 0.5mm\noindent\makebox[\textwidth/$number_of_columns][b]{\hrulefill}';	my $endminipage = '';
if (not $ENV{'request.symb'} =~ m/\.page_/) {	if (not $env{'form.problem_split'}=~/yes/) {
$result .= '\end{minipage}\end{document} ';	$endminipage = '\end{minipage}';
	}
	if ($env{'form.print_discussions'} eq 'yes') {
	$result.=&Apache::lonxml::xmlend($target,$parser);
	$result=~s/<\/html>//;
} else {	} else {
$result .= '';	$result .= '\keephidden{ENDOFPROBLEM}\vskip 0.5mm\noindent\makebox[\textwidth/$number_of_columns][b]{\hrulefill}';
	if (not $env{'request.symb'} =~ m/\.page_/) {
	$result .= $endminipage.'\end{document} ';
	} else {
	$result .= '';
	}
}	}
}	}
}	}
Line 504 sub end_problem {	Line 803 sub end_problem {
&Apache::lonhomework::showhash(%Apache::lonhomework::results);	&Apache::lonhomework::showhash(%Apache::lonhomework::results);
&finalize_storage();	&finalize_storage();
}	}
if ($target eq 'answer' && ($ENV{'request.state'} eq 'construct') ) {	if ($target eq 'answer' && ($env{'request.state'} eq 'construct')
$result.='</html>'; #normally we get it from xmlend, but in CSTR	&& $env{'form.answer_output_mode'} ne 'tex') {
	$result.=&Apache::lonxml::xmlend().'</html>';
	# normally we get it from above, but in CSTR
# we always show answer mode too.	# we always show answer mode too.
}	}
} elsif ($target eq 'meta') {	} elsif ($target eq 'meta') {
if ($Apache::inputtags::part eq '0') {	if ($Apache::inputtags::part eq '0') {
	@Apache::inputtags::response=();
$result=&Apache::response::mandatory_part_meta;	$result=&Apache::response::mandatory_part_meta;
}	}
	$result.=&Apache::response::meta_part_order();
	$result.=&Apache::response::meta_response_order();
} elsif ($target eq 'edit') {	} elsif ($target eq 'edit') {
&Apache::lonxml::debug("in end_problem with $target, edit");	&Apache::lonxml::debug("in end_problem with $target, edit");
$result = &problem_edit_footer();	$result .= &problem_edit_footer();
}	}

undef(%Apache::lonhomework::history);	if ($env{'request.state'} eq 'construct' && $target eq 'web') {
undef(%Apache::lonhomework::results);	&Apache::inputtags::check_for_duplicate_ids();
undef($Apache::inputtags::part);	}
undef($Apache::lonhomework::parsing_a_problem);
	&reset_problem_globals('problem');

return $result;	return $result;
}	}
Line 529 sub end_problem {	Line 834 sub end_problem {
sub start_library {	sub start_library {
my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;	my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
my ($result,$head_tag_start,$body_tag_start,$form_tag_start);	my ($result,$head_tag_start,$body_tag_start,$form_tag_start);
	if ($$tagstack[0] eq 'library') {
	&init_problem_globals('library');
	$Apache::lonhomework::type='problem';
	}
if ($target eq 'edit') {	if ($target eq 'edit') {
($result,$head_tag_start,$body_tag_start,$form_tag_start)=	($result,$head_tag_start,$body_tag_start,$form_tag_start)=
&page_start($target,$token,$tagstack,$parstack,$parser,$safeeval);	&page_start($target,$token,$tagstack,$parstack,$parser,$safeeval);
Line 541 sub start_library {	Line 849 sub start_library {
$result=$token->[4];	$result=$token->[4];
$result.=&Apache::edit::handle_insert();	$result.=&Apache::edit::handle_insert();
} elsif ($target eq 'web' && $$tagstack[0] ne 'problem' &&	} elsif ($target eq 'web' && $$tagstack[0] ne 'problem' &&
$ENV{'request.state'} eq "construct" ) {	$env{'request.state'} eq "construct" ) {
($result,$head_tag_start,$body_tag_start,$form_tag_start)=	($result,$head_tag_start,$body_tag_start,$form_tag_start)=
&page_start($target,$token,$tagstack,$parstack,$parser,$safeeval);	&page_start($target,$token,$tagstack,$parstack,$parser,$safeeval);
my $name=&get_resource_name($parstack,$safeeval);	my $name=&get_resource_name($parstack,$safeeval);
Line 560 sub end_library {	Line 868 sub end_library {
if ($target eq 'edit') {	if ($target eq 'edit') {
$result=&problem_edit_footer();	$result=&problem_edit_footer();
} elsif ($target eq 'web' && $$tagstack[0] ne 'problem' &&	} elsif ($target eq 'web' && $$tagstack[0] ne 'problem' &&
$ENV{'request.state'} eq "construct") {	$env{'request.state'} eq "construct") {
$result.='</form></body>'.&Apache::lonxml::xmlend();	$result.='</form>'.&Apache::loncommon::endbodytag().
	&Apache::lonxml::xmlend();
}	}
	if ($$tagstack[0] eq 'library') { &reset_problem_globals('library') };
return $result;	return $result;
}	}

sub start_block {	sub start_definetag {
my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;	my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;

my $result;	my $result;

	my $name = $token->[2]->{'name'};
	my $skip=&Apache::lonxml::get_all_text("/definetag",$parser);
	if ($name=~/^\//) {
	$result=
	'<br /><table bgcolor="#FFBBBB"><tr><th>END <tt>'.$name.'</tt></th></tr>';
	} else {
	$result=
	'<br /><table bgcolor="#BBFFBB"><tr><th>BEGIN <tt>'.$name.'</tt></th></tr>';
	}
	$skip=~s/\</\&lt\;/gs;
	$skip=~s/\>/\&gt\;/gs;
	$result.='<tr><td><pre>'.$skip.'</pre></td></tr></table>';
	return $result;
	}

	sub end_definetag {
	return '';
	}

	sub start_block {
	my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;

	my $result;

if ($target eq 'web' \|\| $target eq 'grade' \|\| $target eq 'answer' \|\|	if ($target eq 'web' \|\| $target eq 'grade' \|\| $target eq 'answer' \|\|
$target eq 'tex' \|\| $target eq 'analyze') {	$target eq 'tex' \|\| $target eq 'analyze') {
my $code = $token->[2]->{'condition'};	my $code = $token->[2]->{'condition'};
if ($code) {	if (defined($code)) {
if (!$Apache::lonxml::default_homework_loaded) {	if (!$Apache::lonxml::default_homework_loaded) {
&Apache::lonxml::default_homework_load($safeeval);	&Apache::lonxml::default_homework_load($safeeval);
}	}
Line 584 sub start_block {	Line 918 sub start_block {
$result='1';	$result='1';
}	}
if ( ! $result ) {	if ( ! $result ) {
my $skip=&Apache::lonxml::get_all_text("/block",$parser);	my $skip=&Apache::lonxml::get_all_text("/block",$parser,$style);
&Apache::lonxml::debug("skipping ahead :$skip: $$parser[-1]");	&Apache::lonxml::debug("skipping ahead :$skip: $$parser[-1]");
}	}
$result='';	$result='';
Line 611 sub end_block {	Line 945 sub end_block {
}	}

sub start_languageblock {	sub start_languageblock {
my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;	my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;

my $result;	my $result;

Line 633 sub start_languageblock {	Line 967 sub start_languageblock {
}	}
}	}
if ( ! $result ) {	if ( ! $result ) {
my $skip=&Apache::lonxml::get_all_text("/languageblock",$parser);	my $skip=&Apache::lonxml::get_all_text("/languageblock",$parser,
	$style);
&Apache::lonxml::debug("skipping ahead :$skip: $$parser[-1]");	&Apache::lonxml::debug("skipping ahead :$skip: $$parser[-1]");
}	}
$result='';	$result='';
} elsif ($target eq 'edit') {	} elsif ($target eq 'edit') {
$result .=&Apache::edit::tag_start($target,$token);	$result .=&Apache::edit::tag_start($target,$token);
$result .=&Apache::edit::text_arg('Include Language:','include',	$result .=&Apache::edit::text_arg(&mt('Include Language:'),'include',
$token,40);	$token,40);
$result .=&Apache::edit::text_arg('Exclude Language:','exclude',	$result .=&Apache::edit::text_arg(&mt('Exclude Language:'),'exclude',
$token,40);	$token,40);
$result .=&Apache::edit::end_row().&Apache::edit::start_spanning_row();	$result .=&Apache::edit::end_row().&Apache::edit::start_spanning_row();
} elsif ($target eq 'modified') {	} elsif ($target eq 'modified') {
Line 663 sub end_languageblock {	Line 998 sub end_languageblock {
}	}

sub start_instructorcomment {	sub start_instructorcomment {
my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;	my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;

my $result;	my $result;

if ($target eq 'web' \|\| $target eq 'grade' \|\| $target eq 'answer' \|\|	if ($target eq 'web' \|\| $target eq 'grade' \|\| $target eq 'answer' \|\|
$target eq 'tex' \|\| $target eq 'analyze') {	$target eq 'tex' \|\| $target eq 'analyze') {
$result=($ENV{'request.role'}=~/^(in\|cc\|au\|ca\|li)/);	$result=($env{'request.role'}=~/^(in\|cc\|au\|ca\|li)/);
if ( ! $result ) {	if ( (! $result) or ($env{'form.instructor_comments'} eq 'hide')) {
my $skip=&Apache::lonxml::get_all_text("/instructorcomment",$parser);	my $skip=&Apache::lonxml::get_all_text("/instructorcomment",
	$parser,$style);
&Apache::lonxml::debug("skipping ahead :$skip: $$parser[-1]");	&Apache::lonxml::debug("skipping ahead :$skip: $$parser[-1]");
}	}
$result='';	$result='';
Line 713 sub start_while {	Line 1049 sub start_while {
}	}
} elsif ($target eq 'edit') {	} elsif ($target eq 'edit') {
$result .=&Apache::edit::tag_start($target,$token);	$result .=&Apache::edit::tag_start($target,$token);
$result .=&Apache::edit::text_arg('Test Condition:','condition',	$result .=&Apache::edit::text_arg(&mt('Test Condition:'),'condition',
$token,40);	$token,40);
$result .=&Apache::edit::end_row().&Apache::edit::start_spanning_row();	$result .=&Apache::edit::end_row().&Apache::edit::start_spanning_row();
} elsif ($target eq 'modified') {	} elsif ($target eq 'modified') {
Line 739 sub end_while {	Line 1075 sub end_while {
while ($return) {	while ($return) {
if (time-$starttime >	if (time-$starttime >
$Apache::lonnet::perlvar{'lonScriptTimeout'}) {	$Apache::lonnet::perlvar{'lonScriptTimeout'}) {
$return = 0; $error=1; next;	#$return = 0; $error=1; next;
}	}
$result.=&Apache::scripttag::xmlparse($bodytext);	$result.=&Apache::scripttag::xmlparse($bodytext);
$return = &Apache::run::run($code,$safeeval);	$return = &Apache::run::run($code,$safeeval);
}	}
if ($error) {	if ($error) {
&Apache::lonxml::error('<pre>Code ran too long. It ran for more than '.$Apache::lonnet::perlvar{'lonScriptTimeout'}.' seconds occured while running <while$gt; on line '.$line.'</pre>');	&Apache::lonxml::error('<pre>'.&mt('Code ran too long. It ran for more than').' '.$Apache::lonnet::perlvar{'lonScriptTimeout'}.' '.&mt('seconds occured while running <while> on line').' '.$line.'</pre>');
}	}
} elsif ($target eq "edit") {	} elsif ($target eq "edit") {
$result.= &Apache::edit::tag_end($target,$token,'');	$result.= &Apache::edit::tag_end($target,$token,'');
Line 765 sub start_randomlist {	Line 1101 sub start_randomlist {
if ($target eq 'answer' \|\| $target eq 'grade' \|\| $target eq 'web' \|\|	if ($target eq 'answer' \|\| $target eq 'grade' \|\| $target eq 'web' \|\|
$target eq 'tex' \|\| $target eq 'analyze') {	$target eq 'tex' \|\| $target eq 'analyze') {
my $body= &Apache::lonxml::get_all_text("/randomlist",$parser);	my $body= &Apache::lonxml::get_all_text("/randomlist",$parser);
my $b_parser= HTML::TokeParser->new(\$body);	my $b_parser= HTML::LCParser->new(\$body);
	$b_parser->xml_mode(1);
	$b_parser->marked_sections(1);
my $b_tok;	my $b_tok;
my @randomlist;	my @randomlist;
my $list_item;	my $list_item;
Line 789 sub start_randomlist {	Line 1127 sub start_randomlist {
# print "<b>END-TAG $b_tok->[1]</b><br />";	# print "<b>END-TAG $b_tok->[1]</b><br />";
# }	# }
}	}
my @idx_arr = (0 .. $#randomlist);	if (@randomlist) {
&Apache::structuretags::shuffle(\@idx_arr);	my @idx_arr = (0 .. $#randomlist);
my $bodytext = '';	&Apache::structuretags::shuffle(\@idx_arr);
my $show=$#randomlist;	my $bodytext = '';
my $showarg=&Apache::lonxml::get_param('show',$parstack,$safeeval);	my $show=$#randomlist;
$showarg--;	my $showarg=&Apache::lonxml::get_param('show',$parstack,$safeeval);
if ( ($showarg >= 0) && ($showarg < $show) ) { $show = $showarg; }	$showarg--;
for(0 .. $show) {	if ( ($showarg >= 0) && ($showarg < $show) ) { $show = $showarg; }
$bodytext .= "$randomlist[ $idx_arr[$_] ]";	for(0 .. $show) {
	$bodytext .= "$randomlist[ $idx_arr[$_] ]";
	}
	&Apache::lonxml::newparser($parser,\$bodytext);
}	}
&Apache::lonxml::newparser($parser,\$bodytext);
} elsif ($target eq 'edit' ) {	} elsif ($target eq 'edit' ) {
$result .=&Apache::edit::tag_start($target,$token);	$result .=&Apache::edit::tag_start($target,$token);
$result .=&Apache::edit::text_arg('Maximum Tags to Show:','show',	$result .=&Apache::edit::text_arg('Maximum Tags to Show:','show',
Line 816 sub start_randomlist {	Line 1156 sub start_randomlist {
sub shuffle {	sub shuffle {
my $a=shift;	my $a=shift;
my $i;	my $i;
if (defined(@$a)) {	if (ref($a) eq 'ARRAY' && @$a) {
&Apache::response::setrandomnumber();	&Apache::response::pushrandomnumber();
for($i=@$a;--$i;) {	for($i=@$a;--$i;) {
my $j=int(&Math::Random::random_uniform() * ($i+1));	my $j=int(&Math::Random::random_uniform() * ($i+1));
next if $i == $j;	next if $i == $j;
@$a[$i,$j] = @$a[$j,$i];	@$a[$i,$j] = @$a[$j,$i];
}	}
	&Apache::response::poprandomnumber();
}	}
}	}

Line 836 sub end_randomlist {	Line 1177 sub end_randomlist {
return $result;	return $result;
}	}

	sub ordered_show_check {
	my $last_part=$Apache::inputtags::partlist[-2];
	my $in_order=
	&Apache::lonnet::EXT('resource.'.$Apache::inputtags::part.'.ordered');
	my $in_order_show=1;
	if ($last_part ne '0' && lc($in_order) eq 'yes') {
	$in_order_show=&Apache::response::check_status($last_part);
	}
	return $in_order_show;
	}

sub start_part {	sub start_part {
my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;	my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
	&Apache::lonxml::startredirection(); # we'll use redirection to fix up
	# duedates.
my $result='';	my $result='';
my $id= &Apache::lonxml::get_param('id',$parstack,$safeeval);	my $id= &Apache::lonxml::get_param('id',$parstack,$safeeval);
if ($id eq '') { $id = $Apache::lonxml::curdepth; }	if ($id =~ /^\s*$/) { $id = $Apache::lonxml::curdepth; }
$Apache::inputtags::part=$id;	$Apache::inputtags::part=$id;
@Apache::inputtags::responselist = ();	push(@Apache::inputtags::partlist,$id);
	@Apache::inputtags::response=();
@Apache::inputtags::previous=();	@Apache::inputtags::previous=();
@Apache::inputtags::previous_version=();	@Apache::inputtags::previous_version=();
$Apache::lonhomework::problemstatus=	$Apache::lonhomework::problemstatus=&get_problem_status($id);
&Apache::lonnet::EXT("resource.$id.problemstatus");
my $hidden=&Apache::loncommon::check_if_partid_hidden($Apache::inputtags::part);	my $hidden=&Apache::loncommon::check_if_partid_hidden($Apache::inputtags::part);
	my $newtype=&Apache::lonnet::EXT("resource.$id.type");
	if ($newtype) { $Apache::lonhomework::type=$newtype; }
	my $in_order_show=&ordered_show_check();
	my $expression='$external::part=\''.$Apache::inputtags::part.'\';';
	$expression.='$external::type=\''.$Apache::lonhomework::type.'\';';
	&Apache::run::run($expression,$safeeval);

if ($target eq 'meta') {	if ($target eq 'meta') {
return &Apache::response::mandatory_part_meta;	my $display=&Apache::lonxml::get_param('display',$parstack,$safeeval);
	return &Apache::response::mandatory_part_meta.
	&Apache::response::meta_parameter_write('display','string',$display,'Part Description');
} elsif ($target eq 'web' \|\| $target eq 'grade' \|\|	} elsif ($target eq 'web' \|\| $target eq 'grade' \|\|
$target eq 'answer' \|\| $target eq 'tex') {	$target eq 'answer' \|\| $target eq 'tex') {
if ($hidden) {	if ($hidden \|\| !$in_order_show) {
my $bodytext=&Apache::lonxml::get_all_text("/part",$parser);	my $bodytext=&Apache::lonxml::get_all_text("/part",$parser);
} else {	} else {
my ($status,$accessmsg) = &Apache::lonhomework::check_access($id);	my ($status,$accessmsg) = &Apache::lonhomework::check_access($id);
Line 861 sub start_part {	Line 1223 sub start_part {
my $expression='$external::datestatus="'.$status.'";';	my $expression='$external::datestatus="'.$status.'";';
$expression.='$external::gradestatus="'.$Apache::lonhomework::history{"resource.$id.solved"}.'";';	$expression.='$external::gradestatus="'.$Apache::lonhomework::history{"resource.$id.solved"}.'";';
&Apache::run::run($expression,$safeeval);	&Apache::run::run($expression,$safeeval);
if ( $status eq 'CLOSED' ) {	if ($env{'request.state'} eq 'construct') {
	&set_problem_state($Apache::inputtags::part);
	}
	if (( $status eq 'CLOSED' ) \|\|
	( $status eq 'UNCHECKEDOUT') \|\|
	( $status eq 'NOT_YET_VIEWED') \|\|
	( $status eq 'BANNED') \|\|
	( $status eq 'UNAVAILABLE') \|\|
	( $status eq 'INVALID_ACCESS')) {
my $bodytext=&Apache::lonxml::get_all_text("/part",$parser);	my $bodytext=&Apache::lonxml::get_all_text("/part",$parser);
if ( $target eq "web" ) {	if ( $target eq "web" ) {
$result="<br />Part is not open to be viewed. It $accessmsg<br />";	$result="<br />".&mt('Part is not open to be viewed. It')." $accessmsg<br />";
} elsif ( $target eq 'tex' ) {	} elsif ( $target eq 'tex' ) {
$result="\\end{minipage}\\vskip 0 mm Part is not open to be viewed. It $accessmsg \\\\\\begin{minipage}{\\textwidth}";	if (not $env{'form.problem_split'}=~/yes/) {
	$result="\\end{minipage}\\vskip 0 mm ".&mt('Part is not open to be viewed. It')." $accessmsg \\\\\\begin{minipage}{\\textwidth}";
	} else {
	$result="\\vskip 0 mm ".&mt('Part is not open to be viewed. It')." $accessmsg \\\\";
	}
}	}
} else {	} else {
if ($target eq 'tex') {	if ($target eq 'tex') {
$result.='\noindent \end{minipage}\vskip 0 mm \noindent \begin{minipage}{\textwidth}\noindent';	if (not $env{'form.problem_split'}=~/yes/) {
	if ($$tagstack[-2] eq 'td') {
	$result.='\vskip 0 mm \noindent \begin{minipage}{\textwidth}\noindent';
	} else {
	$result.='\noindent \end{minipage}\vskip 0 mm \noindent \begin{minipage}{\textwidth}\noindent';
	}
	}
my $weight = &Apache::lonnet::EXT("resource.$id.weight");	my $weight = &Apache::lonnet::EXT("resource.$id.weight");
if ($Apache::lonhomework::type eq 'exam') { $result .= '\fbox{\textit{'.$weight.' pt}}';}	my $allkeys=&Apache::lonnet::metadata($env{'request.uri'},'packages');
	my @allkeys = split /,/,$allkeys;
	my $allow_print_points = 0;
	foreach my $partial_key (@allkeys) {
	if ($partial_key=~m/^part_(.*)$/) {
	if ($1 ne '0') {$allow_print_points=1;}
	}
	}
	my $maxtries = &Apache::lonnet::EXT("resource.$id.maxtries");
	if (defined($maxtries) && $maxtries < 0) {
	$allow_print_points=0;
	}
	if (lc($env{'course.'.$env{'request.course.id'}.
	'.disableexampointprint'}) eq 'yes') {
	$allow_print_points=0;
	}
	if (($Apache::lonhomework::type eq 'exam') && ($allow_print_points)) { $result .= '\fbox{\textit{'.$weight.' pt}}';}
	} elsif ($target eq 'web') {
	$result.='<a name="'.&Apache::lonnet::escape($Apache::inputtags::part).'" />';
}	}
}	}
}	}
Line 880 sub start_part {	Line 1278 sub start_part {
$result.=&Apache::edit::tag_start($target,$token);	$result.=&Apache::edit::tag_start($target,$token);
$result.=&Apache::edit::text_arg('Part ID:','id',$token).	$result.=&Apache::edit::text_arg('Part ID:','id',$token).
&Apache::loncommon::help_open_topic("Part_Tag_Edit_Help").	&Apache::loncommon::help_open_topic("Part_Tag_Edit_Help").
	'  '.
	&Apache::edit::text_arg('Displayed Part Description:','display',$token).
&Apache::edit::end_row().&Apache::edit::start_spanning_row();	&Apache::edit::end_row().&Apache::edit::start_spanning_row();
} elsif ($target eq 'modified') {	} elsif ($target eq 'modified') {
my $constructtag=&Apache::edit::get_new_args($token,$parstack,	my $constructtag=&Apache::edit::get_new_args($token,$parstack,
$safeeval,'id');	$safeeval,'id','display');
if ($constructtag) {	if ($constructtag) {
	#limiting ids to only letters numbers, and space
	$token->[2]->{'id'}=~s/[^A-Za-z0-9 ]//gs;
$result = &Apache::edit::rebuild_tag($token);	$result = &Apache::edit::rebuild_tag($token);
$result.=&Apache::edit::handle_insert();	$result.=&Apache::edit::handle_insert();
}	}
Line 897 sub end_part {	Line 1299 sub end_part {
&Apache::lonxml::debug("in end_part $target ");	&Apache::lonxml::debug("in end_part $target ");
my $status=$Apache::inputtags::status['-1'];	my $status=$Apache::inputtags::status['-1'];
my $hidden=&Apache::loncommon::check_if_partid_hidden($Apache::inputtags::part);	my $hidden=&Apache::loncommon::check_if_partid_hidden($Apache::inputtags::part);
my $result='';	my $in_order_show=&ordered_show_check();
if ( $target eq 'meta' ) {	my $result= &Apache::lonxml::endredirection(); # started in &start_part
$result='';	if ($target eq 'grade') {
} elsif ( $target eq 'grade' && $status eq 'CAN_ANSWER' && !$hidden) {	if (($status eq 'CAN_ANSWER' \|\| $Apache::lonhomework::scantronmode) &&
$result=&Apache::inputtags::grade;	!$hidden && $in_order_show) {
} elsif (($target eq 'web' \|\| $target eq 'tex') && !$hidden ) {	$result.=&Apache::inputtags::grade;
	} else {
	# move any submission data to .hidden
	&Apache::inputtags::hidealldata($Apache::inputtags::part);
	}
	} elsif (($target eq 'web' \|\| $target eq 'tex') &&
	!$hidden && $in_order_show) {
my $gradestatus=&Apache::inputtags::gradestatus($Apache::inputtags::part,	my $gradestatus=&Apache::inputtags::gradestatus($Apache::inputtags::part,
$target);	$target);
if ($Apache::lonhomework::type eq 'exam') {$gradestatus='';}	if ($Apache::lonhomework::type eq 'exam' && $target eq 'tex') {
$result=$gradestatus;	$gradestatus='';
	}
	$result.=$gradestatus;
	if ($$tagstack[-2] eq 'td' and $target eq 'tex') {$result.='\end{minipage}';}
	} elsif ($target eq 'edit') {
	$result.=&Apache::edit::end_table();
}	}
pop @Apache::inputtags::status;	pop @Apache::inputtags::status;
$Apache::inputtags::part='';	$Apache::inputtags::part='';
	$Apache::lonhomework::type = $Apache::lonhomework::default_type;
return $result;	return $result;
}	}

sub start_preduedate {	sub start_preduedate {
my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;	my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
if ($target eq 'web' \|\| $target eq 'grade' \|\| $target eq 'answer' \|\| $target eq 'tex') {	if ($target eq 'web' \|\| $target eq 'grade' \|\| $target eq 'answer' \|\| $target eq 'tex') {
if ($Apache::inputtags::status['-1'] ne 'CAN_ANSWER' &&	&Apache::lonxml::debug("State in preduedate is ". $Apache::inputtags::status['-1']);
$Apache::inputtags::status['-1'] ne 'CANNOT_ANSWER' &&	if (!$Apache::lonhomework::scantronmode &&
$Apache::inputtags::status['-1'] ne 'SHOW_ANSWER') {	$Apache::inputtags::status['-1'] ne 'CAN_ANSWER' &&
	$Apache::inputtags::status['-1'] ne 'CANNOT_ANSWER') {
	&Apache::lonxml::debug("Wha? ". ($Apache::inputtags::status['-1'] ne 'SHOW_ANSWER'));
&Apache::lonxml::get_all_text("/preduedate",$parser);	&Apache::lonxml::get_all_text("/preduedate",$parser);
}	}
}	}
Line 931 sub end_preduedate {	Line 1347 sub end_preduedate {

sub start_postanswerdate {	sub start_postanswerdate {
my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;	my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
if ($target eq 'web' \|\| $target eq 'grade' \|\| $target eq 'tex') {	if ($target eq 'web' \|\| $target eq 'grade') {
if ($Apache::inputtags::status['-1'] ne 'SHOW_ANSWER') {	if ($Apache::lonhomework::scantronmode \|\|
	$Apache::inputtags::status['-1'] ne 'SHOW_ANSWER') {
&Apache::lonxml::get_all_text("/postanswerdate",$parser);	&Apache::lonxml::get_all_text("/postanswerdate",$parser);
}	}
} elsif ($target eq 'tex') {	} elsif ($target eq 'tex') {
return '\vskip 0 mm \noindent';	&Apache::lonxml::get_all_text("/postanswerdate",$parser);
}	}
return '';	return '';
}	}
Line 951 sub start_notsolved {	Line 1368 sub start_notsolved {
$target eq 'tex') {	$target eq 'tex') {
my $gradestatus=$Apache::lonhomework::history{"resource.$Apache::inputtags::part.solved"};	my $gradestatus=$Apache::lonhomework::history{"resource.$Apache::inputtags::part.solved"};
&Apache::lonxml::debug("not solved has :$gradestatus:");	&Apache::lonxml::debug("not solved has :$gradestatus:");
if ($gradestatus =~ /^correct/) {	if ($gradestatus =~ /^correct/ &&
	&Apache::response::show_answer()) {
&Apache::lonxml::debug("skipping");	&Apache::lonxml::debug("skipping");
&Apache::lonxml::get_all_text("/notsolved",$parser);	&Apache::lonxml::get_all_text("/notsolved",$parser);
}	}
Line 968 sub start_solved {	Line 1386 sub start_solved {
if ($target eq 'web' \|\| $target eq 'grade' \|\| $target eq 'answer' \|\|	if ($target eq 'web' \|\| $target eq 'grade' \|\| $target eq 'answer' \|\|
$target eq 'tex') {	$target eq 'tex') {
my $gradestatus=$Apache::lonhomework::history{"resource.$Apache::inputtags::part.solved"};	my $gradestatus=$Apache::lonhomework::history{"resource.$Apache::inputtags::part.solved"};
if ($gradestatus !~ /^correct/) {	if ($gradestatus !~ /^correct/ \|\|
	!&Apache::response::show_answer()) {
&Apache::lonxml::get_all_text("/solved",$parser);	&Apache::lonxml::get_all_text("/solved",$parser);
}	}
}	}
Line 979 sub end_solved {	Line 1398 sub end_solved {
return '';	return '';
}	}

	sub start_problemtype {
	my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
	my $result;
	if ($target eq 'web' \|\| $target eq 'grade' \|\| $target eq 'answer' \|\|
	$target eq 'tex' \|\| $target eq 'analyze') {
	my $mode=lc(&Apache::lonxml::get_param('mode',$parstack,$safeeval));
	if (!defined($mode)) { $mode='show'; }
	my $for=&Apache::lonxml::get_param('for',$parstack,$safeeval);
	my $found=0;
	foreach my $type (split(',',$for)) {
	if ($Apache::lonhomework::type eq lc($type)) { $found=1; }
	}
	if ($mode eq 'show' && !$found) {
	&Apache::lonxml::get_all_text("/problemtype",$parser);
	}
	if ($mode eq 'hide' && $found) {
	&Apache::lonxml::get_all_text("/problemtype",$parser);
	}
	} elsif ($target eq 'edit') {
	$result .=&Apache::edit::tag_start($target,$token);
	$result.=&Apache::edit::select_arg('Mode:','mode',
	[['show','Show'],
	['hide','Hide']]
	,$token);
	$result .=&Apache::edit::checked_arg('When used as type(s):','for',
	[ ['exam','Exam/Quiz Problem'],
	['survey','Survey'],
	['problem','Homework Problem'] ]
	,$token);
	$result .=&Apache::edit::end_row().&Apache::edit::start_spanning_row();
	} elsif ($target eq 'modified') {
	my $constructtag=&Apache::edit::get_new_args($token,$parstack,
	$safeeval,'mode','for');
	if ($constructtag) { $result = &Apache::edit::rebuild_tag($token); }
	}
	return $result;
	}

	sub end_problemtype {
	return '';
	}

sub start_startouttext {	sub start_startouttext {
my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;	my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
my @result=(''.'');	my @result=(''.'');
Line 993 sub end_startouttext {	Line 1454 sub end_startouttext {

if ($target eq 'edit') {	if ($target eq 'edit') {
$text=&Apache::lonxml::get_all_text("endouttext",$parser);	$text=&Apache::lonxml::get_all_text("endouttext",$parser);
$result.=&Apache::edit::start_table($token)."<tr><td>Text Block</td>	$result.=&Apache::edit::start_table($token)."<tr><td>".&mt('Text Block')."</td>
<td>Delete:".	<td>".&mt('Delete:').
&Apache::edit::deletelist($target,$token)	&Apache::edit::deletelist($target,$token)
."</td>	."</td>
<td>".	<td>".
&Apache::edit::insertlist($target,$token).	&Apache::edit::insertlist($target,$token).
&Apache::edit::end_row().	&Apache::edit::end_row().
&Apache::edit::start_spanning_row()."\n"	&Apache::edit::start_spanning_row()."\n"
.'<table><tr><td>'.	. &Apache::loncommon::helpLatexCheatsheet () .
&Apache::loncommon::help_open_topic("Greek_Symbols",	&Apache::edit::editfield($token->[1],$text,"",80,8,1);
'Greek Symbols',
undef,undef,600)
.'</td><td>'.
&Apache::loncommon::help_open_topic("Other_Symbols",
'Other Symbols',
undef,undef,600)
.'</td></tr></table>'.
&Apache::edit::editfield($token->[1],$text,"",80,4);
}	}
if ($target eq 'modified') {	if ($target eq 'modified') {
$text=&Apache::lonxml::get_all_text("endouttext",$parser);	$result='<startouttext />'.&Apache::edit::modifiedfield("endouttext",$parser);
$result='<startouttext />'.&Apache::edit::modifiedfield();
}	}
if ($target eq 'tex') {	if ($target eq 'tex') {
$result .= '\noindent ';	$result .= '\noindent ';
Line 1053 sub delete_startouttext {	Line 1505 sub delete_startouttext {
return 1;	return 1;
}	}

	sub start_simpleeditbutton {
	my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
	my $result='';
	if (($env{'form.simple_edit_button'} ne 'off') &&
	($target eq 'web') &&
	(&Apache::lonnet::allowed('srm',$env{'request.course.id'}))) {
	my $url=$env{'request.noversionuri'};
	$url=~s/\?.*$//;
	my ($symb) = &Apache::lonxml::whichuser();
	$result='<table width="100%" bgcolor="#FFFFAA" border="2"><tr><td>'.
	'<a href="'.$url.'/smpedit?symb='.&Apache::lonnet::escape($symb).'">'.&mt('Edit').'</a> - '.&mt('Note: it can take up to 10 minutes for changes to take effect for all users.').
	&Apache::loncommon::help_open_topic('Caching').'</td></tr></table><br />';
	}
	return $result;
	}

	sub end_simpleeditbutton {
	return '';
	}

1;	1;
__END__	__END__

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

Removed from v.1.170
changed lines
	Added in v.1.318