--- loncom/interface/loncommon.pm	2005/11/08 20:23:41	1.285
+++ loncom/interface/loncommon.pm	2005/11/15 18:07:46	1.292
@@ -1,7 +1,7 @@
 # The LearningOnline Network with CAPA
 # a pile of common routines
 #
-# $Id: loncommon.pm,v 1.285 2005/11/08 20:23:41 albertel Exp $
+# $Id: loncommon.pm,v 1.292 2005/11/15 18:07:46 albertel Exp $
 #
 # Copyright Michigan State University Board of Trustees
 #
@@ -1149,7 +1149,7 @@ sub domain_select {
     } &get_domains;
     if ($multiple) {
 	$domains{''}=&mt('Any domain');
-	return &multiple_select_form($name,$value,4,%domains);
+	return &multiple_select_form($name,$value,4,\%domains);
     } else {
 	return &select_form($name,$value,%domains);
     }
@@ -1159,7 +1159,7 @@ sub domain_select {
 
 =pod
 
-=item * multiple_select_form($name,$value,$size,%hash)
+=item * multiple_select_form($name,$value,$size,$hash,$order)
 
 Returns a string containing a <select> element int multiple mode
 
@@ -1186,7 +1186,7 @@ sub multiple_select_form {
         }
     }
     $output.="\n<select name='$name' size='$size' multiple='1'>";
-    my @order = ref($order) ? @{$order}
+    my @order = ref($order) ? @$order
                             : sort(keys(%$hash));
     foreach my $key (@order) {
         $output.='<option value="'.$key.'" ';
@@ -2775,8 +2775,8 @@ sub bodytag {
 h1, h2, h3, th { font-family: Arial, Helvetica, sans-serif }
 a:focus { color: red; background: yellow } 
 table.thinborder { border-collapse: collapse; }
-table.thinborder tr th { border-style: solid; border-width: 1px}
-table.thinborder tr td { border-style: solid; border-width: 1px}
+table.thinborder tr th, table.thinborder tr td { border-style: solid; border-width: 1px}
+form, .inline { display: inline; }
 .center { text-align: center; }
 </style>
 <body bgcolor="$pgbg" text="$font" alink="$alink" vlink="$vlink" link="$link"
@@ -3094,64 +3094,108 @@ Incoming parameters:
 3. access status: users must have - either active, 
 previous, future, or all.
 4. reference to array of permissible roles
-5. reference to results object (hash of hashes).
+5. reference to array of section restrictions (optional)
+6. reference to results object (hash of hashes).
+7. reference to optional userdata hash
 Keys of top level hash are roles.
 Keys of inner hashes are username:domain, with 
 values set to access type.
-                                                                                
+Optional userdata hash returns an array with arguments in the 
+same order as loncoursedata::get_classlist() for student data.
+
+Entries for end, start, section and status are blank because
+of the possibility of multiple values for non-student roles.
+
 =cut
                                                                                 
 ###############################################
                                                                                 
 sub get_course_users {
-    my ($cdom,$cnum,$types,$roles,$users) = @_;
-    if (grep/^st$/,@{$roles}) {
-        my $statusidx = &Apache::loncoursedata::CL_STATUS();
-        my $startidx = &Apache::loncoursedata::CL_START();
-        my $endidx = &Apache::loncoursedata::CL_END();
+    my ($cdom,$cnum,$types,$roles,$sections,$users,$userdata) = @_;
+    my %idx = ();
+
+    $idx{udom} = &Apache::loncoursedata::CL_SDOM();
+    $idx{uname} =  &Apache::loncoursedata::CL_SNAME();
+    $idx{end} = &Apache::loncoursedata::CL_END();
+    $idx{start} = &Apache::loncoursedata::CL_START();
+    $idx{id} = &Apache::loncoursedata::CL_ID();
+    $idx{section} = &Apache::loncoursedata::CL_SECTION();
+    $idx{fullname} = &Apache::loncoursedata::CL_FULLNAME();
+    $idx{status} = &Apache::loncoursedata::CL_STATUS();
+
+    if (grep(/^st$/,@{$roles})) {
         my ($classlist,$keylist)=&Apache::loncoursedata::get_classlist($cdom,$cnum);
         my $now = time;
         foreach my $student (keys(%{$classlist})) {
+            my $match = 0;
+            if ((ref($sections) eq 'ARRAY') && (@{$sections} > 0)) {
+		unless(grep(/^\Q$$classlist{$student}[$idx{section}]\E$/,
+			    @{$sections})) {
+		    next;
+		}
+            } 
             if (defined($$types{'active'})) {
-                if ($$classlist{$student}[$statusidx] eq 'Active') {
+                if ($$classlist{$student}[$idx{status}] eq 'Active') {
                     push(@{$$users{st}{$student}},'active');
+                    $match = 1;
                 }
             }
             if (defined($$types{'previous'})) {
-                if ($$classlist{$student}[$endidx] <= $now) {
+                if ($$classlist{$student}[$idx{end}] <= $now) {
                     push(@{$$users{st}{$student}},'previous');
+                    $match = 1;
                 }
             }
             if (defined($$types{'future'})) {
-                if (($$classlist{$student}[$startidx] > $now) && ($$classlist{$student}[$endidx] > $now) || ($$classlist{$student}[$endidx] == 0) || ($$classlist{$student}[$endidx] eq '')) {
+                if (($$classlist{$student}[$idx{start}] > $now) && ($$classlist{$student}[$idx{end}] > $now) || ($$classlist{$student}[$idx{end}] == 0) || ($$classlist{$student}[$idx{end}] eq '')) {
                     push(@{$$users{st}{$student}},'future');
+                    $match = 1;
                 }
             }
+            if ($match && defined($userdata)) {
+                $$userdata{$student} = $$classlist{$student};
+            }
         }
     }
     if ((@{$roles} > 0) && (@{$roles} ne "st")) {
         my @coursepersonnel = &Apache::lonnet::getkeys('nohist_userroles',$cdom,$cnum);
         foreach my $person (@coursepersonnel) {
+            my $match = 0;
             my ($role,$user) = ($person =~ /^([^:]*):([^:]+:[^:]+)/);
             $user =~ s/:$//;
-            if (($role) && (grep(/^$role$/,@{$roles}))) {
-                my ($uname,$udom) = split(/:/,$user);
+            if (($role) && (grep(/^\Q$role\E$/,@{$roles}))) {
+                my ($uname,$udom,$usec) = split(/:/,$user);
+                if ($usec ne '' && (ref($sections) eq 'ARRAY') && 
+		    @{$sections} > 0) {
+		    unless(grep(/^\Q$usec\E$/,@{$sections})) {
+			next;
+		    }
+                }
                 if ($uname ne '' && $udom ne '') {
                     my $status = &check_user_status($udom,$uname,$cdom,$cnum,$role);
                     foreach my $type (keys(%{$types})) { 
                         if ($status eq $type) {
-                            $$users{$role}{$user} = $type;
+                            @{$$users{$role}{$user}} = $type;
+                            $match = 1;
                         }
                     }
+                    if ($match && defined($userdata) &&
+                        !exists($$userdata{$uname.':'.$udom})) {
+			&get_user_info($udom,$uname,\%idx,$userdata);
+                    }
                 }
             }
         }
-        if (grep/^ow$/,@{$roles}) {
+        if (grep(/^ow$/,@{$roles})) {
             if ((defined($cdom)) && (defined($cnum))) {
                 my %csettings = &Apache::lonnet::get('environment',['internal.courseowner'],$cdom,$cnum);
                 if ( defined($csettings{'internal.courseowner'}) ) {
                     my $owner = $csettings{'internal.courseowner'};
-                    $$users{'ow'}{$owner.':'.$cdom} = 'any';
+                    @{$$users{'ow'}{$owner.':'.$cdom}} = 'any';
+                    if (defined($userdata) && 
+			!exists($$userdata{$owner.':'.$cdom})) {
+			&get_user_info($cdom,$owner,\%idx,$userdata);
+		    }
                 }
             }
         }
@@ -3159,7 +3203,14 @@ sub get_course_users {
     return;
 }
 
-
+sub get_user_info {
+    my ($udom,$uname,$idx,$userdata) = @_;
+    $$userdata{$uname.':'.$udom}[$$idx{fullname}] = 
+	&plainname($uname,$udom,'lastname');
+    $$userdata{$uname.':'.$udom}[$$idx{uname}] = $uname;
+    $$userdata{$uname.':'.$udom}[$$idx{uname}] = $udom;
+    return;
+}
 
 ###############################################
 
@@ -3299,6 +3350,7 @@ sub no_cache {
 
 sub content_type {
     my ($r,$type,$charset) = @_;
+    &no_cache($r);
     if ($env{'browser.mathml'} && $type eq 'text/html') { $type='text/xml'; }
     unless ($charset) {
 	$charset=&Apache::lonlocal::current_encoding;
