--- loncom/interface/lonstatistics.pm	2003/08/27 21:33:33	1.79
+++ loncom/interface/lonstatistics.pm	2003/12/24 21:54:58	1.92
@@ -1,6 +1,6 @@
 # The LearningOnline Network with CAPA
 #
-# $Id: lonstatistics.pm,v 1.79 2003/08/27 21:33:33 matthew Exp $
+# $Id: lonstatistics.pm,v 1.92 2003/12/24 21:54:58 www Exp $
 #
 # Copyright Michigan State University Board of Trustees
 #
@@ -48,6 +48,7 @@ Main handler for statistics and chart.
     use Apache::loncoursedata;
     use Apache::lonhtmlcommon;
     use Apache::lonproblemanalysis;
+    use Apache::lonsubmissiontimeanalysis;
     use Apache::lonproblemstatistics;
     use Apache::lonstudentassessment;
     use Apache::lonpercentage;
@@ -79,10 +80,12 @@ use Apache::loncommon;
 use Apache::loncoursedata;
 use Apache::lonhtmlcommon;
 use Apache::lonproblemanalysis();
+use Apache::lonsubmissiontimeanalysis();
 use Apache::lonproblemstatistics();
 use Apache::lonstudentassessment();
 use Apache::lonpercentage;
 use Apache::lonmysql;
+use Apache::lonlocal;
 use Time::HiRes;
 
 #######################################################
@@ -797,6 +800,72 @@ sub SectionSelect {
     return $Str;
 }
 
+#######################################################
+#######################################################
+
+=pod
+
+=item &CreateAndParseOutputSelector()
+
+Construct a selection list of options for output and parse output selections.
+
+=cut
+
+#######################################################
+#######################################################
+sub OutputDescriptions {
+    my (@OutputOptions) = @_;
+    my $Str = '';
+    $Str .= "<h2>Output Modes</h2>\n";
+    $Str .= "<dl>\n";
+    foreach my $outputmode (@OutputOptions) {
+	$Str .="    <dt>".$outputmode->{'name'}."</dt>\n";
+	$Str .="        <dd>".$outputmode->{'description'}."</dd>\n";
+    }
+    $Str .= "</dl>\n";
+    return $Str;
+}
+
+sub CreateAndParseOutputSelector {
+    my ($elementname,$default,@OutputOptions) = @_;
+    my $output_mode;
+    my $show;
+    my $Str = '';
+    #
+    # Format for output options is 'mode, restrictions';
+    my $selected = $default;
+    if (exists($ENV{'form.'.$elementname})) {
+        if (ref($ENV{'form.'.$elementname} eq 'ARRAY')) {
+            $selected = $ENV{'form.'.$elementname}->[0];
+        } else {
+            $selected = $ENV{'form.'.$elementname};
+        }
+    }
+    #
+    # Set package variables describing output mode
+    $output_mode = 'html';
+    $show        = 'all';
+    foreach my $option (@OutputOptions) {
+        next if ($option->{'value'} ne $selected);
+        $output_mode = $option->{'mode'};
+        $show        = $option->{'show'};
+    }
+    #
+    # Build the form element
+    $Str = qq/<select size="5" name="$elementname">/;
+    foreach my $option (@OutputOptions) {
+        if (exists($option->{'special'}) && 
+            $option->{'special'} =~ /do not show/) {
+            next;
+        }
+        $Str .= "\n".'    <option value="'.$option->{'value'}.'"';
+        $Str .= " selected " if ($option->{'value'} eq $selected);
+        $Str .= ">".&mt($option->{'name'})."<\/option>";
+    }
+    $Str .= "\n</select>";
+    return ($Str,$output_mode,$show);
+}
+
 ###############################################
 ###############################################
 
@@ -814,6 +883,8 @@ sub Gather_Student_Data {
     my ($r) = @_;
     my $c = $r->connection();
     #
+    &Apache::loncoursedata::clear_internal_caches();
+    #
     my @Sequences = &Apache::lonstatistics::Sequences_with_Assess();
     #
     my @Students = @Apache::lonstatistics::Students;
@@ -829,7 +900,45 @@ sub Gather_Student_Data {
             ($student->{'username'},$student->{'domain'},
              $ENV{'request.course.id'});
         &Apache::lonhtmlcommon::Increment_PrgWin($r,\%prog_state,
-                                                 'last student');
+                                                 &mt('last student'));
+    }
+    &Apache::lonhtmlcommon::Close_PrgWin($r,\%prog_state);
+    $r->rflush();
+}
+
+###############################################
+###############################################
+
+=pod 
+
+=item &Gather_Full_Student_Data()
+
+Ensures all student data is up to date.
+
+=cut
+
+###############################################
+###############################################
+sub Gather_Full_Student_Data {
+    my ($r) = @_;
+    my $c = $r->connection();
+    #
+    &Apache::loncoursedata::clear_internal_caches();
+    #
+    my @Students = @Apache::lonstatistics::Students;
+    #
+    # Open the progress window
+    my %prog_state=&Apache::lonhtmlcommon::Create_PrgWin
+        ($r,&mt('Student Data Compilation Status'),
+         &mt('Student Data Compilation Progress'), scalar(@Students));
+    #
+    while (my $student = shift @Students) {
+        return if ($c->aborted());
+        my ($status,undef) = &Apache::loncoursedata::ensure_current_full_data
+            ($student->{'username'},$student->{'domain'},
+             $ENV{'request.course.id'});
+        &Apache::lonhtmlcommon::Increment_PrgWin($r,\%prog_state,
+                                                 &mt('last student'));
     }
     &Apache::lonhtmlcommon::Close_PrgWin($r,\%prog_state);
     $r->rflush();
@@ -929,31 +1038,43 @@ sub DisplayClasslist {
 ##############################################
 ##############################################
 sub CreateMainMenu {
-    my ($status,$reports,$current)=@_;
     #
-    my $Str = '';
+    # Define menu data
+    my @reports = ({ internal_name => 'problem_statistics',
+                     name => &mt('Overall Problem Statistics'),
+                     short_description => 
+    &mt('Student performance statistics on all problems.'),
+                 },
+                   { internal_name => 'problem_analysis',
+                     name => &mt('Detailed Problem Analysis'),
+                     short_description => 
+    &mt('Detailed statistics and graphs of student performance on problems.'),
+                 },
+                   { internal_name => 'submissiontime_analysis',
+                     name => &mt('Submission Time Analysis'),
+                     short_description => 
+    &mt('Display and analysis of submission times on assessments.'),
+                 },
+#                   { internal_name => 'student_assessment',
+#                     name => &mt('Problem Status Chart'),
+#                     short_description => 
+#    &mt('Brief view of each students performance in course.'),
+#                 },
+                   # 'percentage'  => 'Correct-problems Plot',
+                   # 'activitylog' => 'Activity Log',
+                   );
     #
-    $Str  = '<input type="hidden" name="reportSelected" value="'.$current.'">';
-#    $Str .= '<table border="0"><tbody><tr>'."\n";
-#    $Str .= '<td align="center"><b>Report:</b></td>'."\n";
-#    $Str .= '<td align="center">';
-#    $Str .= '<select name="reportSelected" '.
-#        'onchange="document.Statistics.submit()">'."\n";
-#    foreach (sort(keys(%$reports))) {
-#        $Str .= '<option value="'.$_.'"';
-#        if($current eq $_) {
-#            $Str .= ' selected';
-#        }
-#        $Str .= '>'.$reports->{$_}.'</option>'."\n";
-#    }
-#    $Str .= '</select></td>'."\n";
-#    #
-#    $Str .= '<td>'.('&nbsp;'x30).'</td>';
-#    $Str .= '<td align="center">'.
-#        '<input type="submit" name="ClearCache" value="Clear Caches" />'.
-#            "</td>\n";
-#    $Str .= '</tr></tbody></table>'."\n";
-#    $Str .= '<hr>'."\n";
+    # Create the menu
+    my $Str;
+    $Str .= '<h1>'.&mt('Please select a report to generate').'</h1>';
+    foreach my $reportdata (@reports) {
+        $Str .='    <h3><a href="/adm/statistics?reportSelected='.
+            $reportdata->{'internal_name'}.'" >'.
+            $reportdata->{'name'}."</a></h3>\n";
+        $Str .= '    '.('&nbsp;'x8).$reportdata->{'short_description'}.
+            "\n";
+    }
+    $Str .="</dl>\n";
     #
     return $Str;
 }
@@ -984,91 +1105,79 @@ sub handler {
         }
     }
     #
-    # Set document type for header only
-    if($r->header_only) {
-        if ($ENV{'browser.mathml'}) {
-            $r->content_type('text/xml');
-        } else {
-            $r->content_type('text/html');
-        }
-        &Apache::loncommon::no_cache($r);
-        $r->send_http_header;
-        return OK;
-    }
-    #
     # Send the header
-    $r->content_type('text/html');
+    &Apache::loncommon::no_cache($r);
+    &Apache::loncommon::content_type($r,'text/html');
     $r->send_http_header;
+    if ($r->header_only) { return OK; }
     #
     # Extract form elements from query string
     &Apache::loncommon::get_unprocessed_cgi($ENV{'QUERY_STRING'},
                                             ['sort','reportSelected',
                                              'SelectedStudent']);
-    if (! exists($ENV{'form.reportSelected'})) {
-        $ENV{'form.reportSelected'} = 'student_assessment';
-    }
     #
     # Give the LON-CAPA page header
     $r->print(&Apache::lonhtmlcommon::Title('Course Statistics and Charts'));
     $r->rflush();
+    # 
+    # Either print out a menu for them or send them to a report
+    if (! exists($ENV{'form.reportSelected'}) || 
+        $ENV{'form.reportSelected'} eq '') {
+        $r->print(&CreateMainMenu());
+    } else {
     #
-    if (! &Apache::lonmysql::verify_sql_connection()) {
-        my $serveradmin = $r->dir_config('lonAdmEMail');
-        $r->print(<<END);
-<h2><font color="Red">Unable to connect to database!</font></h2>
-<p>
-Please notify the server administrator <b>$serveradmin</b>.
-</p><p>
-Course Statistics and Charts cannot be retrieved until the database is
-restarted.  Your data is intact but cannot be displayed at this time.
-</p>
-</body>
-</html>
-END
-        return;
-    }
-    #
-    # Clean out the caches
-    if (exists($ENV{'form.ClearCache'})) {
-        &Apache::loncoursedata::delete_caches($ENV{'requres.course.id'});
-    }
-    #
-    # Set up the statistics and chart environment
-    &PrepareClasslist();
-    &PrepareCourseData($r);
-    #
-    # Begin form output
-    $r->print('<form name="Statistics" ');
-    $r->print('method="post" action="/adm/statistics">');
-    #
-    # Print main menu
-    my %reports = ('classlist'          => 'Class list',
-                   'problem_statistics' => 'Problem Statistics',
-                   'student_assessment' => 'Problem Status Chart',
-#                   'percentage'         => 'Correct-problems Plot',
-#                   'option_response'    => 'Option Response Analysis',
-#                   'activitylog'        => 'Activity Log',
-                   );
-    $r->print(&CreateMainMenu($ENV{'form.status'},
-                              \%reports,$ENV{'form.reportSelected'}));
-    $r->rflush();
-    #
-    my $GoToPage = $ENV{'form.reportSelected'};
-    if($GoToPage eq 'activitylog') {
+        if (! &Apache::lonmysql::verify_sql_connection()) {
+            my $serveradmin = $r->dir_config('lonAdmEMail');
+            $r->print('<h2><font color="Red">'.
+                      &mt('Unable to connect to database!').
+                      '</font></h2>');
+            $r->print('<p>'.
+                      &mt('Please notify the server administrator ').
+                      '<b>'.$serveradmin.'</b></p>');
+            $r->print('<p>'.
+                      &mt('Course Statistics and Charts cannot be '.
+                          'retrieved until the database is restarted.  '.
+                          'Your data is intact but cannot be displayed '.
+                          'at this time.').'</p>');
+            $r->print('</body></html>');
+            return;
+        }
+        #
+        # Clean out the caches
+        if (exists($ENV{'form.ClearCache'})) {
+            &Apache::loncoursedata::delete_caches($ENV{'requres.course.id'});
+        }
+        #
+        # Begin form output
+        $r->print('<form name="Statistics" ');
+        $r->print('method="post" action="/adm/statistics">');
+        $r->rflush();
+        #
+        my $GoToPage = $ENV{'form.reportSelected'};
+        #
+        # Set up the statistics and chart environment
+        &PrepareCourseData($r);
+        #
+        $r->print('<input type="hidden" name="reportSelected" value="'.
+                  $GoToPage.'">');
+        if($GoToPage eq 'activitylog') {
 #        &Apache::lonproblemstatistics::Activity();
-    } elsif($GoToPage eq 'problem_statistics') {
-        &Apache::lonproblemstatistics::BuildProblemStatisticsPage($r,$c);
-    } elsif($GoToPage eq 'option_response') {
-#        &Apache::lonproblemanalysis::BuildProblemAnalysisPage($r,$c);
-    } elsif($GoToPage eq 'student_assessment') {
-        &Apache::lonstudentassessment::BuildStudentAssessmentPage($r,$c);
-    } elsif($GoToPage eq 'DoDiffGraph' || $GoToPage eq 'PercentWrongGraph') {
+        } elsif($GoToPage eq 'problem_statistics') {
+            &Apache::lonproblemstatistics::BuildProblemStatisticsPage($r,$c);
+        } elsif($GoToPage eq 'problem_analysis') {
+            &Apache::lonproblemanalysis::BuildProblemAnalysisPage($r,$c);
+        } elsif($GoToPage eq 'submissiontime_analysis') {
+            &Apache::lonsubmissiontimeanalysis::BuildSubmissionTimePage($r,$c);
+        } elsif($GoToPage eq 'student_assessment') {
+            &Apache::lonstudentassessment::BuildStudentAssessmentPage($r,$c);
+        } elsif($GoToPage eq 'DoDiffGraph' || $GoToPage eq 'PercentWrongGraph') {
 #        &Apache::lonproblemstatistics::BuildGraphicChart($r,$c);
-    } elsif($GoToPage eq 'Correct-problems Plot') {
-#	&Apache::lonpercentage::BuildPercentageGraph($r,$c);
+        } elsif($GoToPage eq 'Correct-problems Plot') {
+            #	&Apache::lonpercentage::BuildPercentageGraph($r,$c);
+        }
+        #
+        $r->print("</form>\n");
     }
-    #
-    $r->print("</form>\n");
     $r->print("</body>\n</html>\n");
     $r->rflush();
     #