--- loncom/homework/structuretags.pm	2020/10/01 18:54:21	1.512.2.13.4.4
+++ loncom/homework/structuretags.pm	2015/04/21 12:28:05	1.536
@@ -1,7 +1,7 @@
 # The LearningOnline Network with CAPA 
 # definition of tags that give a structure to a document
 #
-# $Id: structuretags.pm,v 1.512.2.13.4.4 2020/10/01 18:54:21 raeburn Exp $
+# $Id: structuretags.pm,v 1.536 2015/04/21 12:28:05 raeburn Exp $
 #
 # Copyright Michigan State University Board of Trustees
 #
@@ -63,7 +63,6 @@ use Apache::londefdef;
 use Apache::lonenc();
 use Apache::loncommon();
 use Time::HiRes qw( gettimeofday tv_interval );
-use HTML::Entities();
 use lib '/home/httpd/lib/perl/';
 use LONCAPA;
  
@@ -271,7 +270,7 @@ sub homework_js {
         $jstimeout = 1000 * $timeout;
     }
     return &Apache::loncommon::resize_textarea_js().
-           &Apache::loncommon::colorfuleditor_js().
+                &Apache::loncommon::colorfuleditor_js().
            &setmode_javascript().
 	<<"JS";
 <script type="text/javascript">
@@ -318,7 +317,7 @@ var keypresshandled = 0;
 var postsubmit = '$postsubmit';
 
 \$(document).ready(function(){
-  if (postsubmit != 'off') {
+  if (postsubmit != 'off') {    
     \$(document).keypress(function(event){
         var keycode = (event.keyCode ? event.keyCode : event.which);
         if ((keycode == '13') && (keypresshandled == 0)) {
@@ -391,10 +390,8 @@ sub setmode_javascript {
 <script type="text/javascript">
 // <![CDATA[
 function setmode(form,probmode) {
-    var initial = form.problemmode.value;
     form.problemmode.value = probmode;
     form.submit();
-    form.problemmode.value = initial;
 }
 // ]]>
 </script>
@@ -420,13 +417,9 @@ sub page_start {
     $extra_head .= &homework_js().
                    &Apache::lonhtmlcommon::dragmath_js("EditMathPopup");
     if (&Apache::lonhtmlcommon::htmlareabrowser()) {
-        my %textarea_args;
-        if (($env{'request.state'} ne 'construct') ||
-            ($env{'environment.nocodemirror'})) {
-            %textarea_args = (
+        my %textarea_args = (
                                 dragmath => 'math',
                               );
-        }
         $extra_head .= &Apache::lonhtmlcommon::htmlareaselectactive(\%textarea_args);
     }
     my $is_task = ($env{'request.uri'} =~ /\.task$/);
@@ -651,11 +644,10 @@ sub setup_rndseed {
     unless (defined($questiontype)) {
         $questiontype = $Apache::lonhomework::type;
     }
-    if (($env{'request.state'} eq "construct") 
-        || ($symb eq '') 
-        || ($Apache::lonhomework::type eq 'practice')
-        || ($Apache::lonhomework::history{'resource.CODE'})
-        || (($env{'form.code_for_randomlist'}) && ($target eq 'analyze'))) {
+    if ($env{'request.state'} eq "construct" 
+	|| $symb eq '' 
+	|| $Apache::lonhomework::type eq 'practice'
+	|| $Apache::lonhomework::history{'resource.CODE'}) {
 	&Apache::loncommon::get_unprocessed_cgi($ENV{'QUERY_STRING'},
 						['rndseed']);
 	$rndseed=$env{'form.rndseed'};
@@ -664,9 +656,7 @@ sub setup_rndseed {
 	    if (!$rndseed) {
 		$rndseed=time;
 	    }
-            unless ($env{'form.code_for_randomlist'}) {
-                $env{'form.rndseed'}=$rndseed;
-            }
+	    $env{'form.rndseed'}=$rndseed;
 	}
         if (($env{'request.state'} eq "construct") && 
             ($Apache::lonhomework::type eq 'randomizetry')) {
@@ -694,11 +684,7 @@ sub setup_rndseed {
 	       $rndseed=join(':',&Apache::lonnet::digest($rndseed));
             }
         }
-        if (($env{'form.code_for_randomlist'}) && ($target eq 'analyze')) {
-            $env{'form.CODE'} = $env{'form.code_for_randomlist'};
-            $rndseed=&Apache::lonnet::rndseed();
-            undef($env{'form.CODE'});
-        } elsif ($Apache::lonhomework::history{'resource.CODE'}) {
+        if ($Apache::lonhomework::history{'resource.CODE'}) {
 	   $rndseed=&Apache::lonnet::rndseed();
 	}
         $set_safespace = 1;
@@ -782,9 +768,7 @@ sub problem_edit_buttons {
    if ($mode eq 'editxml') {
        $result.=&problem_edit_action_button('subedit','edit','e','Edit',1);
        $result.=&problem_edit_action_button('subundo','undoxml','u','Undo',1);
-       if ($env{'environment.nocodemirror'}) {
-           $result.=&Apache::lonhtmlcommon::dragmath_button("LC_editxmltext",1);
-       }
+       $result.=&Apache::lonhtmlcommon::dragmath_button("LC_editxmltext",1);
    } else {
        $result.=&problem_edit_action_button('subeditxml','editxml','x','EditXML',1);
        $result.=&problem_edit_action_button('subundo','undo','u','Undo',1);
@@ -800,9 +784,9 @@ sub problem_edit_header {
         <div class="LC_edit_problem_header">
         <div class="LC_edit_problem_header_title">
         '.&mt('Problem Editing').$mode.&Apache::loncommon::help_open_menu('Problem Editing','Problem_Editor_XML_Index',5,'Authoring').'
-         </div><div class="LC_edit_actionbar" id="actionbar">'.
-         '<input type="hidden" name="problemmode" value="saveedit" />'.
-         &problem_edit_buttons();
+        </div><div class="LC_edit_actionbar" id="actionbar">'.
+        '<input type="hidden" name="problemmode" value="saveedit" />'.
+        &problem_edit_buttons();
 
     $return .= '</div></div>' . &Apache::lonxml::message_location();
     $return .= '<link rel="stylesheet" href="/adm/codemirror/codemirror-combined.css" />
@@ -830,7 +814,6 @@ sub problem_edit_header {
     return $return;
 }
 
-
 sub problem_edit_footer {
     my $resource = $env{'request.ambiguous'};
     return '</td></tr></table><br />
@@ -906,7 +889,7 @@ sub problem_web_to_edit_header {
 ".&mt("Problem Type:")."
 <select name='problemtype'>
   <option value=''></option>
-  ".&option('exam'   ,'problemtype').&mt("Exam Problem")."</option>
+  ".&option('exam'   ,'problemtype').&mt("Bubblesheet Exam Problem")."</option>
   ".&option('problem','problemtype').&mt("Homework Problem")."</option>
   ".&option('survey' ,'problemtype').&mt("Survey Question")."</option>
   ".&option('surveycred' ,'problemtype').&mt("Survey Question (with credit)")."</option>
@@ -1026,7 +1009,7 @@ sub initialize_storage {
 	}
 	%Apache::lonhomework::history=
 	    &Apache::lonnet::tmprestore($namespace,'',$domain,$name);
-	my ($temp)=keys(%Apache::lonhomework::history);
+	my ($temp)=keys(%Apache::lonhomework::history) ;
 	&Apache::lonxml::debug("Return message of $temp");
     } else {
 	%Apache::lonhomework::history=
@@ -1049,13 +1032,13 @@ sub initialize_storage {
         &check_correctness_changes() is called in two circumstances
         in which the results hash is to be stored permanently, for
         grading triggered by a student's submission, where feedback on
-        correctness is to be provided to the student.
+        correctness is to be provided to the student. 
 
         1. Immediately prior to storing the results hash
 
-        To handle the case where a student's submission (and award) were
+        To handle the case where a student's submission (and award) were 
         stored after history was retrieved in &initialize_storage(), e.g.,
-        if a student submitted answers in quick succession (e.g., from
+        if a student submitted answers in quick succession (e.g., from 
         multiple tabs).  &Apache::inputtags::hidealldata() is called for
         any parts with out-of-order storage (i.e., correct then incorrect,
         where awarded >= 1 when correct).
@@ -1065,14 +1048,14 @@ sub initialize_storage {
         To handle the case where lond on the student's homeserver returns
         delay:N -- where N is the number of transactions between the last
         retrieved in &initialize_storage() and the last stored immediately
-        before permanent storage of the current transaction via
-        lond::store_handler().  &Apache::grades::makehidden() is called
+        before permanent storage of the current transaction via 
+        lond::store_handler().  &Apache::grades::makehidden() is called  
         for any parts with out-of-order storage (i.e., correct then incorrect,
         where awarded >= 1 when correct).
 
 	Will call &store_aggregates() to increment totals for attempts, 
-	students, and corrects, if running user has student role.
-	
+        students, and corrects, if running user has student role.
+
 =cut
 
 
@@ -1193,13 +1176,13 @@ sub finalize_storage {
 =item check_correctness_changes()
 
         For all parts for which current results contain a solved status
-        of "incorrect_attempted", check if there was a transaction in which
-        solved was set to "correct_by_student" in the time since the last
-        transaction (retrieved when &initialize_storage() was called i.e.,
+        of "incorrect_attempted", check if there was a transaction in which  
+        solved was set to "correct_by_student" in the time since the last 
+        transaction (retrieved when &initialize_storage() was called i.e., 
         when &start_problem() was called), unless:
         (a) questiontype parameter is set to survey or anonymous survey (+/- credit)
         (b) problemstatus is set to no or no_feedback_ever
-        If such a transaction exists, and did not occur after "reset status"
+        If such a transaction exists, and did not occur after "reset status" 
         by a user with grading privileges, then the current transaction is an
         example of an out-of-order transaction (i.e., incorrect occurring after
         correct).  Accordingly, the current transaction should be hidden.
@@ -1327,8 +1310,8 @@ sub checkout_msg {
 		'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?');
+                'checkout'=>'Check out Bubblesheet Exam for Viewing',
+		'checkout?'=>'Check out Bubblesheet Exam?');
     my $uri = &Apache::lonenc::check_encrypt($env{'request.uri'});
     return (<<ENDCHECKOUT);
 <h2>$lt{'resource'}</h2>
@@ -1367,11 +1350,9 @@ sub firstaccess_msg {
     my $uri = &Apache::lonenc::check_encrypt($env{'request.uri'});
     my $buttontext = &mt('Show Resource');
     my $timertext = &mt('Start Timer?');
-    my $shownsymb = &HTML::Entities::encode(&Apache::lonenc::check_encrypt($symb),'\'"<>&');
     $result .= (<<ENDCHECKOUT);
 <form name="markaccess" method="post" action="$uri">
 <input type="hidden" name="markaccess" value="yes" />
-<input type="hidden" name="symb" value="$shownsymb" />
 <input type="button" name="accessbutton" value="$buttontext" onclick="javascript:if (confirm('$timertext')) { document.markaccess.submit(); }" />
 </form>
 ENDCHECKOUT
@@ -1535,8 +1516,7 @@ sub start_problem {
         $target eq 'tex') {
         if ($env{'form.markaccess'}) {
             my @interval=&Apache::lonnet::EXT("resource.0.interval");
-            my ($timelimit) = ($interval[0] =~ /^(\d+)/);
-            &Apache::lonnet::set_first_access($interval[1],$timelimit);
+            &Apache::lonnet::set_first_access($interval[1],$interval[0]);
         }
 
         ($status,$accessmsg,$slot_name,$slot) =
@@ -2020,8 +2000,6 @@ sub end_library {
 	     && ($#$tagstack eq 0 && $$tagstack[0] eq 'library') 
 	     && $env{'request.state'} eq "construct") {
 	$result.='</form>'.&Apache::loncommon::end_page({'discussion' => 1});
-    } elsif ($target eq 'meta') {
-        $result.=&Apache::response::meta_response_order();
     }
     if ( $#$tagstack eq 0 && $$tagstack[0] eq 'library') {
 	&reset_problem_globals('library');
@@ -2504,12 +2482,7 @@ sub start_randomlist {
 	}
 	if (@randomlist) {
 	    my @idx_arr = (0 .. $#randomlist);
-            if ($env{'form.code_for_randomlist'}) {
-                &Apache::structuretags::shuffle(\@idx_arr,$target);
-                undef($env{'form.code_for_randomlist'});
-            } else {
-                &Apache::structuretags::shuffle(\@idx_arr);
-            }
+	    &Apache::structuretags::shuffle(\@idx_arr);
 	    my $bodytext = '';
 	    my $show=$#randomlist;
 	    my $showarg=&Apache::lonxml::get_param('show',$parstack,$safeeval);
@@ -2548,10 +2521,10 @@ sub start_randomlist {
 }
 
 sub shuffle {
-    my ($a,$target) = @_;
+    my $a=shift;
     my $i;
     if (ref($a) eq 'ARRAY' && @$a) {
-	&Apache::response::pushrandomnumber(undef,$target);
+	&Apache::response::pushrandomnumber();
 	for($i=@$a;--$i;) {
 	    my $j=int(&Math::Random::random_uniform() * ($i+1));
 	    next if $i == $j;
@@ -2909,7 +2882,7 @@ sub start_problemtype {
 					    ['hide','Hide']]
 					   ,$token);
 	$result .=&Apache::edit::checked_arg('When used as type(s):','for',
-					     [ ['exam','Exam/Quiz Problem'],
+					     [ ['exam','Bubblesheet Exam/Quiz Problem'],
 					       ['survey','Survey'],
                                                ['surveycred','Survey (with credit)'],
                                                ['anonsurvey','Anonymous Survey'],
@@ -2957,13 +2930,9 @@ sub end_startouttext {
                  .'<td><span class="LC_nobreak">'.&mt('Delete?').' '
                  .&Apache::edit::deletelist($target,$token)
                  .'</span></td>'
-	         .'<td><span id="math_'.$areaid.'">';
-	if ($env{'environment.nocodemirror'}) {
-	    $result.=&Apache::lonhtmlcommon::dragmath_button($areaid,1);
-	} else {
-	    $result.='&nbsp;';
-	}
-	$result.='</span></td>'
+	         .'<td><span id="math_'.$areaid.'">'
+		 .&Apache::lonhtmlcommon::dragmath_button($areaid,1)
+		 .'</span></td>'
 		 .'<td>'
 		 .&Apache::edit::insertlist($target,$token)
 		 .'</td>'