--- loncom/interface/lonmsgdisplay.pm	2006/04/25 20:02:30	1.14
+++ loncom/interface/lonmsgdisplay.pm	2006/05/01 05:57:26	1.20
@@ -1,7 +1,7 @@
 # The LearningOnline Network with CAPA
 # Routines for messaging display
 #
-# $Id: lonmsgdisplay.pm,v 1.14 2006/04/25 20:02:30 albertel Exp $
+# $Id: lonmsgdisplay.pm,v 1.20 2006/05/01 05:57:26 raeburn Exp $
 #
 # Copyright Michigan State University Board of Trustees
 #
@@ -261,13 +261,18 @@ sub movemsg {
 sub discourse {
     my $r=shift;
     my $classlist = &Apache::loncoursedata::get_classlist();
-    my $now=time;
+    my ($classgroups,$studentgroups) = 
+            &Apache::loncoursedata::get_group_memberships($classlist);
     my %lt=&Apache::lonlocal::texthash('cfa' => 'Check All',
             'cfs' => 'Check Section/Group',
             'cfn' => 'Uncheck All');
+    if (defined($env{'form.group'})) {
+        $r->print('<input type="hidden" name="group" value="'.
+                  $env{'form.group'}.'" />'."\n");
+    }
     $r->print(<<ENDDISHEADER);
 <input type="hidden" name="sendmode" value="group" />
-<script>
+<script pe="text/javascript">
     function checkall() {
 	for (i=0; i<document.forms.compemail.elements.length; i++) {
             if 
@@ -284,6 +289,12 @@ sub discourse {
            ('send_to_&&&'+document.forms.compemail.chksec.value+'&&&')==0) {
 	      document.forms.compemail.elements[i].checked=true;
             }
+            if
+          (document.forms.compemail.elements[i].name.indexOf
+           ('group_&&&'+document.forms.compemail.chksec.value+'&&&_')==0) {
+              var count = i - document.forms.compemail.elements[i].value;
+              document.forms.compemail.elements[count].checked=true;
+            }
         }
     }
 
@@ -298,50 +309,86 @@ sub discourse {
 </script>
 <input type="button" onClick="checkall()" value="$lt{'cfa'}" />&nbsp;
 <input type="button" onClick="checksec()" value="$lt{'cfs'}" />
-<input type="text" size="5" name="chksec" />&nbsp;
+<input type="text" size="15" name="chksec" value="$env{'form.group'}" />&nbsp;
 <input type="button" onClick="uncheckall()" value="$lt{'cfn'}" />
 <p>
 ENDDISHEADER
     my %coursepersonnel=&Apache::lonnet::get_course_adv_roles();
-    $r->print('<table>');
-    foreach my $role (sort keys %coursepersonnel) {
-        foreach (split(/\,/,$coursepersonnel{$role})) {
-            my ($puname,$pudom)=split(/\:/,$_);
-            $r->print('<tr><td><label>'.
-                      '<input type="checkbox" name="send_to_&&&&&&_'.
-                      $puname.':'.$pudom.'" /> '.
-                      &Apache::loncommon::plainname($puname,$pudom).
-                      '</label></td>'.
-                      '<td>('.$_.'),</td><td><i>'.$role.'</i></td></tr>');
-        }
-    }
-    $r->print('</table><table>');
-    my $sort = sub {
-	my $aname=lc($classlist->{$a}[&Apache::loncoursedata::CL_FULLNAME()]);
-	if (!$aname) { $aname=$a; }
-	my $bname=lc($classlist->{$b}[&Apache::loncoursedata::CL_FULLNAME()]);
-	if (!$bname) { $bname=$b; }
-	return $aname cmp $bname;
-    };
-    foreach my $student (sort $sort (keys(%{$classlist}))) {
-	my $info=$classlist->{$student};
-        my ($sname,$sdom,$status,$fullname,$section) =
-            (@{$info}[&Apache::loncoursedata::CL_SNAME(),
-                      &Apache::loncoursedata::CL_SDOM(),
-                      &Apache::loncoursedata::CL_STATUS(),
-                      &Apache::loncoursedata::CL_FULLNAME(),
-                      &Apache::loncoursedata::CL_SECTION()]);
-        next if ($status ne 'Active');
-	next if ($env{'request.course.sec'} &&
-		 $section ne $env{'request.course.sec'});
-        my $key = 'send_to_&&&'.$section.'&&&_'.$student;
-        if (! defined($fullname) || $fullname eq '') { $fullname = $sname; }
-        $r->print('<tr><td><label>'.
-                  qq{<input type="checkbox" name="$key" />}.('&nbsp;'x2).
-                  $fullname.'</label></td><td>'.$sname.':'.$sdom.'</td><td>'.$section.
-                  '</td></tr>');
+    $r->print(&Apache::loncommon::start_data_table());
+    if (keys(%coursepersonnel) > 0) {
+        $r->print('<h3>Non-students</h3>');
+        $r->print(&Apache::loncommon::start_data_table());
+        $r->print(&Apache::loncommon::start_data_table_row());
+        $r->print('<th>Name</th><th>Username:Domain</th><th>Role</th>');
+        $r->print(&Apache::loncommon::end_data_table_row());
+        foreach my $role (sort keys %coursepersonnel) {
+            foreach (split(/\,/,$coursepersonnel{$role})) {
+                my ($puname,$pudom)=split(/\:/,$_);
+                $r->print(&Apache::loncommon::start_data_table_row());
+                $r->print('<td><label>'.
+                          '<input type="checkbox" name="send_to_&&&&&&_'.
+                          $puname.':'.$pudom.'" /> '.
+                          &Apache::loncommon::plainname($puname,$pudom).
+                          '</label></td>'.
+                          '<td>('.$_.'),</td><td><i>'.$role.'</i></td>');
+                $r->print(&Apache::loncommon::end_data_table_row());
+            }
+        }
+        $r->print(&Apache::loncommon::end_data_table());
+    }
+    if (keys(%{$classlist}) > 0) {
+        $r->print('<h3>Students</h3>');
+        $r->print(&Apache::loncommon::start_data_table());
+        $r->print(&Apache::loncommon::start_data_table_row());
+        $r->print('<th>Name</th><th>Username:Domain</th><th>Section</th><th>Groups</th>');
+        $r->print(&Apache::loncommon::end_data_table_row());
+        my $sort = sub {
+	    my $aname=lc($classlist->{$a}[&Apache::loncoursedata::CL_FULLNAME()]);
+	    if (!$aname) { $aname=$a; }
+	    my $bname=lc($classlist->{$b}[&Apache::loncoursedata::CL_FULLNAME()]);
+	    if (!$bname) { $bname=$b; }
+	    return $aname cmp $bname;
+        };
+        foreach my $student (sort $sort (keys(%{$classlist}))) {
+	    my $info=$classlist->{$student};
+            my ($sname,$sdom,$status,$fullname,$section) =
+                (@{$info}[&Apache::loncoursedata::CL_SNAME(),
+                          &Apache::loncoursedata::CL_SDOM(),
+                          &Apache::loncoursedata::CL_STATUS(),
+                          &Apache::loncoursedata::CL_FULLNAME(),
+                          &Apache::loncoursedata::CL_SECTION()]);
+            next if ($status ne 'Active');
+	    next if ($env{'request.course.sec'} &&
+		     $section ne $env{'request.course.sec'});
+            my @studentsgroups = &Apache::loncoursedata::get_students_groups(
+                                               $student,$status,$classgroups);
+            my $grouplist = join(', ',@studentsgroups);
+            my $key = 'send_to_&&&'.$section.'&&&_'.$student;
+            if (! defined($fullname) || $fullname eq '') {$fullname = $sname;}
+            my $checked = '';
+            my $groupcount = 0;
+            my $groupitems;
+            $r->print(&Apache::loncommon::start_data_table_row());
+            $r->print('<td><label>');
+            foreach my $group (@studentsgroups) {
+                $groupcount ++;
+                $groupitems .= ('<input type="hidden" name="group_&&&'.
+                                $group.'&&&_'.$student.'" value="'.
+                                $groupcount.'" />');
+                if (defined($env{'form.group'})) {
+                    if ($env{'form.group'} eq $group) {
+                        $checked = 'checked=checked';
+                    }
+                }
+            }
+            $r->print(qq{<input type="checkbox" name="$key" $checked />}.
+                      ('&nbsp;'x2).$fullname.'</label>'.$groupitems.
+                      '</td><td>'.$sname.':'.$sdom.'</td><td>'.$section.
+                      '</td><td>'.$grouplist.'</td>');
+            $r->print(&Apache::loncommon::end_data_table_row());
+        }
+        $r->print(&Apache::loncommon::end_data_table());
     }
-    $r->print('</table>');
 }
 
 # ==================================================== Display Critical Message
@@ -612,7 +659,7 @@ sub disfolder {
     my $numblocked = 0;
     &blockcheck(\%setters,\$startblock,\$endblock);
     $r->print(<<ENDDISHEADER);
-<script>
+<script type="text/javascript">
     function checkall() {
 	for (i=0; i<document.forms.disall.elements.length; i++) {
             if 
@@ -1275,76 +1322,54 @@ sub get_blockdates {
                          $env{'course.'.$env{'request.course.id'}.'.domain'},
                          $env{'course.'.$env{'request.course.id'}.'.num'}
                          );
-    $$blockcount = keys %{$records};
-                                                                                                             
-    foreach (keys %{$records}) {
-        if ($_ eq 'error: 2 tie(GDBM) Failed while attempting dump') {
-            $$blockcount = 0;
-            last;
-        }
+    $$blockcount = keys(%{$records});
+
+    if ((keys(%{$records}))[0] =~ /^error: 2 /) {
+	$records = {};
+	$$blockcount = 0;
     }
 }
 
 sub display_blocker_status {
     my ($r,$records,$ltext) = @_;
     my $parmcount = 0;
-    my @bgcols = ("#eeeeee","#dddddd");
-    my $function = &Apache::loncommon::get_users_function();
-    my $color = &Apache::loncommon::designparm($function.'.tabbg',
-                                                    $env{'user.domain'});
+  
     my %lt = &Apache::lonlocal::texthash(
         'modi' => 'Modify',
         'canc' => 'Cancel',
     );
+    $r->print(&Apache::loncommon::start_data_table());
     $r->print(<<"END");
-<table border="0" cellpadding="0" cellspacing="0">
- <tr>
-  <td width="100%" bgcolor="#000000">
-   <table width="100%" border="0" cellpadding="1" cellspacing="0">
-    <tr>
-     <td width="100%" bgcolor="#000000">
-      <table border="0" cellpadding="3" cellspacing="3" bgcolor="#FFFFFF">
-       <tr bgcolor="$color">
-        <td><b>$$ltext{'dura'}</b></td>
-        <td><b>$$ltext{'setb'}</b></td>
-        <td><b>$$ltext{'even'}</b></td>
-        <td><b>$$ltext{'actn'}?</b></td>
-       </tr>
+  <tr>
+    <th>$$ltext{'dura'}</th>
+    <th>$$ltext{'setb'}</th>
+    <th>$$ltext{'even'}</th>
+    <th>$$ltext{'actn'}?</th>
+  </tr>
 END
-    foreach (sort keys %{$records}) {
-        my $iter = $parmcount%2;
+    foreach my $record (sort(keys(%{$records}))) {
         my $onchange = 'onFocus="javascript:window.document.forms['.
                        "'blockform'].elements['modify_".$parmcount."'].".
                        'checked=true;"';
-        my ($start,$end) = split/____/,$_;
+        my ($start,$end) = split(/____/,$record);
         my $startform = &Apache::lonhtmlcommon::date_setter('blockform','startdate_'.$parmcount,$start,$onchange);
         my $endform = &Apache::lonhtmlcommon::date_setter('blockform','enddate_'.$parmcount,$end,$onchange);
-	my (@data,$setuname,$setudom,$title);
-	@data = split(/:/,$$records{$_},3);
-	if (scalar(@data) eq 2) {
-	    $title = $data[1];
-	    ($setuname,$setudom) = split(/@/,$data[0]);
-	} else {
-	    ($setuname,$setudom,$title) = @data;
-	}
+	
+	my ($setuname,$setudom,$title) = 
+	    &parse_block_record($$records{$record});
+	$title = &HTML::Entities::encode($title,'"<>');
         my $settername = &Apache::loncommon::plainname($setuname,$setudom);
+        $r->print(&Apache::loncommon::start_data_table_row());
         $r->print(<<"END");
-       <tr bgcolor="$bgcols[$iter]">
         <td>$$ltext{'star'}:&nbsp;$startform<br/>$$ltext{'endd'}:&nbsp;&nbsp;$endform</td>
         <td>$settername</td>
-        <td><input type="text" name="title_$parmcount" size="15" value="$title" /><input type="hidden" name="key_$parmcount" value="$_" /></td>
+        <td><input type="text" name="title_$parmcount" size="15" value="$title" /><input type="hidden" name="key_$parmcount" value="$record" /></td>
         <td><label>$lt{'modi'}?&nbsp;<input type="checkbox" name="modify_$parmcount" /></label><br /><label>$lt{'canc'}?&nbsp;&nbsp;<input type="checkbox" name="cancel_$parmcount" /></label>
-       </tr>
 END
-        $parmcount ++;
+        $r->print(&Apache::loncommon::end_data_table_row());
+        $parmcount++;
     }
     $r->print(<<"END");
-      </table>
-     </td>
-    </tr>
-   </table>
-  </td>
- </tr>
 </table>
 <br />
 <br />
@@ -1352,6 +1377,19 @@ END
     return $parmcount;
 }
 
+sub parse_block_record {
+    my ($record) = @_;
+    my ($setuname,$setudom,$title);
+    my @data = split(/:/,$record,3);
+    if (scalar(@data) eq 2) {
+	$title = $data[1];
+	($setuname,$setudom) = split(/@/,$data[0]);
+    } else {
+	($setuname,$setudom,$title) = @data;
+    }
+    return ($setuname,$setudom,$title);
+}
+
 sub display_addblocker_table {
     my ($r,$parmcount,$ltext) = @_;
     my $start = time;
@@ -1361,9 +1399,6 @@ sub display_addblocker_table {
                    'checked=true;"';
     my $startform = &Apache::lonhtmlcommon::date_setter('blockform','startdate_'.$parmcount,$start,$onchange);
     my $endform = &Apache::lonhtmlcommon::date_setter('blockform','enddate_'.$parmcount,$end,$onchange);
-    my $function = &Apache::loncommon::get_users_function();
-    my $color = &Apache::loncommon::designparm($function.'.tabbg',
-                                                    $env{'user.domain'});
     my %lt = &Apache::lonlocal::texthash(
         'addb' => 'Add block',
         'exam' => 'e.g., Exam 1',
@@ -1371,133 +1406,106 @@ sub display_addblocker_table {
     );
     $r->print(<<"END");
 <h4>$lt{'addn'}</h4> 
-<table border="0" cellpadding="0" cellspacing="0">
- <tr>
-  <td width="100%" bgcolor="#000000">
-   <table width="100%" border="0" cellpadding="1" cellspacing="0">
-    <tr>
-     <td width="100%" bgcolor="#000000">
-      <table border="0" cellpadding="3" cellspacing="3" bgcolor="#FFFFFF">
-       <tr bgcolor="#CCCCFF">
-        <td><b>$$ltext{'dura'}</b></td>
-        <td><b>$$ltext{'even'} $lt{'exam'}</b></td>
-        <td><b>$$ltext{'actn'}?</b></td>
-       </tr>
-       <tr bgcolor="#eeeeee">
-        <td>$$ltext{'star'}:&nbsp;$startform<br />$$ltext{'endd'}:&nbsp;&nbsp;$endform</td>
-        <td><input type="text" name="title_$parmcount" size="15" value="" /></td>
-        <td><label>$lt{'addb'}?&nbsp;<input type="checkbox" name="add_$parmcount" value="1" /></label></td>
-       </tr>
-      </table>
-     </td>
-    </tr>
-   </table>
-  </td>
- </tr>
-</table>
 END
+    $r->print(&Apache::loncommon::start_data_table());
+    $r->print(<<"END");
+   <tr>
+     <th>$$ltext{'dura'}</th>
+     <th>$$ltext{'even'} $lt{'exam'}</th>
+     <th>$$ltext{'actn'}?</th>
+   </tr>
+END
+   $r->print(&Apache::loncommon::start_data_table_row());
+    $r->print(<<"END");
+     <td>$$ltext{'star'}:&nbsp;$startform<br />$$ltext{'endd'}:&nbsp;&nbsp;$endform</td>
+     <td><input type="text" name="title_$parmcount" size="15" value="" /></td>
+     <td><label>$lt{'addb'}?&nbsp;<input type="checkbox" name="add_$parmcount" value="1" /></label></td>
+END
+    $r->print(&Apache::loncommon::end_data_table_row());
+    $r->print(&Apache::loncommon::end_data_table());
     return;
 }
 
 sub blockcheck {
     my ($setters,$startblock,$endblock) = @_;
     # Retrieve active student roles and active course coordinator/instructor roles
-    my @livecses = ();
-    my @staffcses = ();
-    $$startblock = 0;
-    $$endblock = 0;
-    foreach (keys %env) {
-        if ($_ =~ m-^user\.role\.(st|cc|in)\./(.+)$-) {
-            my $role = $1;
-            my $cse = $2;
-            $cse =~ s|/|_|;
-            if ($env{$_} =~ m/^(\d*)\.(\d*)$/) {
-                unless (($2 > 0 && $2 < time) || ($1 > time)) {
-                    if ($role eq 'st') {
-                        push @livecses, $cse;
-                    } else {
-                        unless (grep/^$cse$/,@staffcses) {
-                            push @staffcses, $cse;
-                        }
-                    }
-                }
-            }
-        } elsif ($_ =~ m-user\.role\.cr/(\w+)/(\w+)/([^/]+)\./(.+)$- ) { 
-            my $rolepriv = $env{'user.role..rolesdef_'.$3};
-        }
-    }
-    # Retrieve blocking times and identity of blocker for active courses for students.
-    if (@livecses > 0) {
-        foreach my $cse (@livecses) {
-            my ($cdom,$crs) = split/_/,$cse;
-            if ( (grep/^$cse$/,@staffcses) && ($env{'request.role'} !~ m-^st\./$cdom/$crs$-) ) {
-                next;
-            } else {
-                %{$$setters{$cse}} = ();
-                @{$$setters{$cse}{'staff'}} = ();
-                @{$$setters{$cse}{'times'}} = ();
-                my %records = &Apache::lonnet::dump('comm_block',$cdom,$crs);
-                foreach (keys %records) {
-                    if ($_ =~ m/^(\d+)____(\d+)$/) {
-                        if ($1 <= time && $2 >= time) {
-                            my ($staff,$title) = split/:/,$records{$_};
-                            push @{$$setters{$cse}{'staff'}}, $staff;
-                            push @{$$setters{$cse}{'times'}}, $_;
-                            if ( ($$startblock == 0) || ($$startblock > $1) ) {
-                                $$startblock = $1;
-                            }
-                            if ( ($$endblock == 0) || ($$endblock < $2) ) {
-                                $$endblock = $2;
-                            }
-                        }
-                    }
-                }
-            }
-        }
+    my %live_courses =
+	map { $_ => 1} &Apache::loncommon::findallcourses();
+    # FIXME should really probe for apriv, but ::allowed can only probe the 
+    #       currently active role
+    my %staff_of =
+	map { $_ => 1} &Apache::loncommon::findallcourses(['cc','in']);
+
+    # Retrieve blocking times and identity of blocker for active courses
+    # for students.
+    return if (!%live_courses);
+
+    foreach my $course (keys(%live_courses)) {
+	my $cdom = $env{'course.'.$course.'.domain'};
+	my $cnum = $env{'course.'.$course.'.num'};
+
+	# if they are a staff member and are currently not playing student
+	next if ( $staff_of{$course} 
+		  && ($env{'request.role'} !~ m{^st\./$cdom/$cnum}));
+
+	$setters->{$course} = {};
+	$setters->{$course}{'staff'} = [];
+	$setters->{$course}{'times'} = [];
+	my %records = &Apache::lonnet::dump('comm_block',$cdom,$cnum);
+	foreach my $record (keys %records) {
+	    my ($start,$end) = ($record =~ m/^(\d+)____(\d+)$/);
+	    if ($start <= time && $end >= time) {
+		my ($staff_name,$staff_dom,$title) = 
+		    &parse_block_record($records{$record});
+		push(@{$$setters{$course}{'staff'}}, [$staff_name,$staff_dom]);
+		push(@{$$setters{$course}{'times'}}, [$start,$end]);
+		if ( ($$startblock == 0) || ($$startblock > $1) ) {
+		    $$startblock = $1;
+		}
+		if ( ($$endblock == 0) || ($$endblock < $2) ) {
+		    $$endblock = $2;
+		}
+	    }
+	}
     }
 }
 
 sub build_block_table {
     my ($r,$startblock,$endblock,$setters) = @_;
-    my $function = &Apache::loncommon::get_users_function();
-    my $color = &Apache::loncommon::designparm($function.'.tabbg',
-                                                    $env{'user.domain'});
     my %lt = &Apache::lonlocal::texthash(
         'cacb' => 'Currently active communication blocks',
         'cour' => 'Course',
         'dura' => 'Duration',
         'blse' => 'Block set by'
-    ); 
+    );
     $r->print(<<"END");
-<br /<br />$lt{'cacb'}:<br /><br />
-<table border="0" cellpadding="0" cellspacing="0">
- <tr>
-  <td width="100%" bgcolor="#000000">
-   <table width="100%" border="0" cellpadding="1" cellspacing="0">
-    <tr>
-     <td width="100%" bgcolor="#000000">
-      <table border="0" cellpadding="3" cellspacing="3" bgcolor="#FFFFFF">
-       <tr bgcolor="$color">
-        <td><b>$lt{'cour'}</b></td>
-        <td><b>$lt{'dura'}</b></td>
-        <td><b>$lt{'blse'}</b></td>
-       </tr>
+<br /><br />$lt{'cacb'}:<br /><br />
+END
+    $r->print(&Apache::loncommon::start_data_table());
+    $r->print(<<"END");
+<tr>
+ <th>$lt{'cour'}</th>
+ <th>$lt{'dura'}</th>
+ <th>$lt{'blse'}</th>
+</tr>
 END
-    foreach (keys %{$setters}) {
-        my %courseinfo=&Apache::lonnet::coursedescription($_);
-        for (my $i=0; $i<@{$$setters{$_}{staff}}; $i++) {
-            my ($uname,$udom) = split/\@/,$$setters{$_}{staff}[$i];
+    foreach my $course (keys(%{$setters})) {
+        my %courseinfo=&Apache::lonnet::coursedescription($course);
+        for (my $i=0; $i<@{$$setters{$course}{staff}}; $i++) {
+            my ($uname,$udom) = @{$$setters{$course}{staff}[$i]};
             my $fullname = &Apache::loncommon::plainname($uname,$udom);
-            my ($openblock,$closeblock) = split/____/,$$setters{$_}{times}[$i];
+            my ($openblock,$closeblock) = @{$$setters{$course}{times}[$i]};
             $openblock = &Apache::lonlocal::locallocaltime($openblock);
             $closeblock= &Apache::lonlocal::locallocaltime($closeblock);
-            $r->print('<tr><td>'.$courseinfo{'description'}.'</td>'.
+            $r->print(&Apache::loncommon::start_data_table_row().
+		      '<td>'.$courseinfo{'description'}.'</td>'.
                       '<td>'.$openblock.' to '.$closeblock.'</td>'.
                       '<td>'.$fullname.' ('.$uname.':'.$udom.
-                      ')</td></tr>');
+                      ')</td>'.
+		       &Apache::loncommon::end_data_table_row());
         }
     }
-    $r->print('</table></td></tr></table></td></tr></table>');
+    $r->print(&Apache::loncommon::end_data_table());
 }
 
 # ----------------------------------------------------------- Display a message
@@ -1897,7 +1905,7 @@ sub handler {
         ['display','replyto','forward','markread','markdel','markunread',
          'sendreply','compose','sendmail','critical','recname','recdom',
          'recordftf','sortedby','block','folder','startdis','interdis',
-	 'showcommentbaseurl','dismode']);
+	 'showcommentbaseurl','dismode','group']);
     $sqs='&sortedby='.$env{'form.sortedby'};
 
 # ------------------------------------------------------ They checked for email