--- loncom/interface/spreadsheet/lonspreadsheet.pm	2003/08/01 13:31:41	1.18
+++ loncom/interface/spreadsheet/lonspreadsheet.pm	2003/09/30 15:40:09	1.26
@@ -1,5 +1,5 @@
 #
-# $Id: lonspreadsheet.pm,v 1.18 2003/08/01 13:31:41 matthew Exp $
+# $Id: lonspreadsheet.pm,v 1.26 2003/09/30 15:40:09 matthew Exp $
 #
 # Copyright Michigan State University Board of Trustees
 #
@@ -54,12 +54,16 @@ built-in functions.
 package Apache::lonspreadsheet;
             
 use strict;
+use warnings FATAL=>'all';
+no warnings 'uninitialized';
 use Apache::classcalc();
 use Apache::studentcalc();
 use Apache::assesscalc();
 use Apache::Constants qw(:common :http);
 use Apache::lonnet;
 use Apache::lonhtmlcommon;
+use Apache::lonlocal;
+use Apache::loncoursedata();
 use HTML::Entities();
 
 ##
@@ -103,9 +107,8 @@ sub file_dialogs {
         if ($save_status ne 'ok') {
             $message .= "An error occurred while saving the spreadsheet".
                 "There error is:".$save_status;
-            return $result;
         } else {
-            $message .= "Spreadsheet saved as ".$ENV{'form.savefilename'};
+            $message .= "Spreadsheet saved as ".$spreadsheet->filename();
         }
     } elsif (exists($ENV{'form.newformula'}) && 
              exists($ENV{'form.cell'})       && 
@@ -165,9 +168,13 @@ END
         }
         $load_dialog .= '>'.$sheetfilename."</option>\n";
     }
-    $load_dialog .= "</td><td>&nbsp;</td></tr>\n</table>\n";
+    $load_dialog .= "</select>\n</td><td>&nbsp;</td></tr>\n</table>\n";
         #
     $result .=<<END;
+<!-- 
+    <fieldset title="File Dialogs" >
+    <legend>File Dialogs</legend>
+  -->
 <!-- load / save dialogs -->
 <table cellspacing="2">
 <tr>
@@ -180,6 +187,9 @@ END
     </td>
 </tr>
 </table>
+<!--
+    </fieldset>
+  -->
 END
     return ($result,$message);
 }
@@ -200,7 +210,7 @@ sub handler {
     # HTML Header
     #
     if ($r->header_only) {
-        $r->content_type('text/html');
+        &Apache::loncommon::content_type($r,'text/html');
         $r->send_http_header;
         return OK;
     }
@@ -226,7 +236,7 @@ sub handler {
     # Get query string for limited number of parameters
     #
     &Apache::loncommon::get_unprocessed_cgi
-        ($ENV{'QUERY_STRING'},['sname','sdomain','usymb','filename']);
+        ($ENV{'QUERY_STRING'},['sname','sdomain','usymb','filename','recalc']);
     #
     # Deal with restricted student permissions 
     #
@@ -289,7 +299,7 @@ sub handler {
     #
     # Open page, try to prevent browser cache.
     #
-    $r->content_type('text/html');
+    &Apache::loncommon::content_type($r,'text/html');
     &Apache::loncommon::no_cache($r);
     $r->send_http_header;
 
@@ -363,6 +373,33 @@ ENDSCRIPT
         }
     }
     ##
+    ## Take care of "backdoor" spreadsheet expiration / recalc stuff
+    if ($allowed_to_edit && exists($ENV{'form.recalc'})) {
+        if (exists($ENV{'form.recalc'})) {
+            &Apache::loncoursedata::delete_caches($ENV{'requres.course.id'});
+        }
+        if ($ENV{'form.recalc'} eq 'ilovewastingtime') {
+            &Apache::lonnet::logthis('ilovewastingtime');
+            # expire ALL spreadsheets
+            &Apache::lonnet::expirespread('','','studentcalc');
+            &Apache::lonnet::expirespread('','','assesscalc');
+        } elsif ($ENV{'form.recalc'} =~ /^symb:/) {
+            # expire for all students on this symb
+            my ($symb) = ($ENV{'form.recalc'} =~ /^symb:(.*)$/);
+            &Apache::lonnet::logthis('symb = '.$symb);
+            &Apache::lonnet::expirespread('','','assesscalc',$symb);
+            &Apache::lonnet::expirespread('','','studentcalc');
+        } elsif ($ENV{'form.recalc'} =~ /^student:/) {
+            # expire all assessment spreadsheets for this user
+            my ($sname,$sdom) = ($ENV{'form.recalc'}=~/^student:(.*):(.*)$/);
+            &Apache::lonnet::logthis('student = '.$sname.':'.$sdom);
+            if (defined($sname) && defined($sdom)) {
+                &Apache::lonnet::expirespread($sname,$sdom,'assesscalc');
+                &Apache::lonnet::expirespread($sname,$sdom,'studentcalc');
+            }
+        }
+    }
+    ##
     ## Make the spreadsheet
     &Apache::Spreadsheet::initialize_spreadsheet_package();
     my $spreadsheet = undef;
@@ -422,9 +459,25 @@ END
     }
     $r->rflush();
     #
+    $r->print("<table><tr>");
     if ($sheettype eq 'classcalc') {
-        $r->print('<input type="submit" value="Generate Spreadsheet" /><br />');
+        $r->print('<td><input type="submit" value="'.
+		  &mt('Generate Spreadsheet').'" />'.
+                  '</td>');
+    }
+    if ($allowed_to_view) {
+        $r->print('<td>'.
+                  &Apache::loncommon::help_open_topic("Spreadsheet_About",
+                                                      'Spreadsheet Help').
+                  '</td>');
+    }
+    if ($allowed_to_edit) {
+        $r->print('<td>'.
+                  &Apache::loncommon::help_open_topic("Spreadsheet_Editing",
+                                                      'Editing Help').
+                  '</td>');
     }
+    $r->print('</tr></table>');
     #
     # Keep track of the filename
     $r->print(&hiddenfield('filename',$filename));