--- loncom/interface/statistics/lonstudentassessment.pm	2006/02/27 19:40:30	1.131
+++ loncom/interface/statistics/lonstudentassessment.pm	2006/08/18 15:15:38	1.143
@@ -1,6 +1,6 @@
 # The LearningOnline Network with CAPA
 #
-# $Id: lonstudentassessment.pm,v 1.131 2006/02/27 19:40:30 albertel Exp $
+# $Id: lonstudentassessment.pm,v 1.143 2006/08/18 15:15:38 raeburn Exp $
 #
 # Copyright Michigan State University Board of Trustees
 #
@@ -50,16 +50,20 @@ Presents assessment data about a student
 package Apache::lonstudentassessment;
 
 use strict;
-use Apache::lonstatistics;
-use Apache::lonhtmlcommon;
+use Apache::lonstatistics();
+use Apache::lonhtmlcommon();
 use Apache::loncommon();
 use Apache::loncoursedata;
 use Apache::lonnet; # for logging porpoises
 use Apache::lonlocal;
-use Apache::grades;
+use Apache::grades();
+use Apache::lonmsgdisplay();
 use Time::HiRes;
 use Spreadsheet::WriteExcel;
 use Spreadsheet::WriteExcel::Utility();
+use lib '/home/httpd/lib/perl/';
+use LONCAPA;
+ 
 
 #######################################################
 #######################################################
@@ -146,6 +150,7 @@ sub BuildStudentAssessmentPage {
                                'chartoutputmode' => 'scalar',
                                'chartoutputdata' => 'scalar',
                                'Section' => 'array',
+                               'Groups' => 'array',
                                'StudentData' => 'array',
                                'Maps' => 'array');
     &Apache::loncommon::store_course_settings('chart',\%Saveable_Parameters);
@@ -313,14 +318,24 @@ the chart page.
 #######################################################
 sub CreateInterface {
     my $Str = '';
-    $Str .= &Apache::lonhtmlcommon::breadcrumbs(undef,'Chart');
+    $Str .= &Apache::lonhtmlcommon::breadcrumbs('Chart','Chart_Description:Chart_Sections:Chart_Student_Data:Chart_Enrollment_Status:Chart_Sequences:Chart_Output_Formats:Chart_Output_Data');
 #    $Str .= &CreateLegend();
     $Str .= '<table cellspacing="5">'."\n";
     $Str .= '<tr>';
-    $Str .= '<td align="center"><b>'.&mt('Sections').'</b></td>';
-    $Str .= '<td align="center"><b>'.&mt('Student Data</b>').'</td>';
-    $Str .= '<td align="center"><b>'.&mt('Enrollment Status').'</b></td>';
-    $Str .= '<td align="center"><b>'.&mt('Sequences and Folders').'</b></td>';
+    $Str .= '<td align="center"><b>'.&mt('Sections').'</b>'.
+	&Apache::loncommon::help_open_topic("Chart_Sections").
+	'</td>';
+    $Str .= '<td align="center"><b>'.&mt('Groups').'</b>'.
+	'</td>';
+    $Str .= '<td align="center"><b>'.&mt('Student Data</b>').
+	&Apache::loncommon::help_open_topic("Chart_Student_Data").
+	'</td>';
+    $Str .= '<td align="center"><b>'.&mt('Access Status').'</b>'.
+	&Apache::loncommon::help_open_topic("Chart_Enrollment_Status").
+	'</td>';
+    $Str .= '<td align="center"><b>'.&mt('Sequences and Folders').'</b>'.
+	&Apache::loncommon::help_open_topic("Chart_Sequences").
+	'</td>';
     $Str .= '<td align="center"><b>'.&mt('Output Format').'</b>'.
         &Apache::loncommon::help_open_topic("Chart_Output_Formats").
         '</td>';
@@ -332,6 +347,8 @@ sub CreateInterface {
     $Str .= '<tr><td align="center">'."\n";
     $Str .= &Apache::lonstatistics::SectionSelect('Section','multiple',5);
     $Str .= '</td><td align="center">';
+    $Str .= &Apache::lonstatistics::GroupSelect('Group','multiple',5);
+    $Str .= '</td><td align="center">';
     $Str .= &Apache::lonstatistics::StudentDataSelect('StudentData','multiple',
                                                       5,undef);
     $Str .= '</td><td>'."\n";
@@ -650,6 +667,18 @@ sub html_initialize {
                   &mt('Unable to retrieve course information.').
                   '</h3>');
     }
+
+    # If we're showing links, show a checkbox to open in new
+    # windows.
+    if ($show_links ne 'no') {
+        $r->print(<<NEW_WINDOW_CHECKBOX);
+<script type="text/javascript">new_window = true;</script>
+<p><label>Show links in new window: 
+<input type="checkbox" checked="1" onclick="new_window=this.checked" />
+</label></p>
+NEW_WINDOW_CHECKBOX
+    }
+
     #
     $r->print("<h3>".$env{'course.'.$env{'request.course.id'}.'.description'}.
               "&nbsp;&nbsp;".localtime(time)."</h3>");
@@ -719,6 +748,58 @@ sub html_initialize {
     $Str .= "<pre>";
     $r->print($Str);
     $r->rflush();
+
+    $r->print(<<JS);
+<script type="text/javascript">
+// get the left offset of a given widget as an absolute position
+function getLeftOffset (element) {
+    return collect(element, "offsetLeft");
+}
+
+// get the top offset of a given widget as an absolute position
+function getTopOffset (element) {
+    return collect(element, "offsetTop");
+}
+
+function collect(element, att) {
+    var val = 0;
+    while(element) {
+        val += element[att];
+        element = element.offsetParent;
+    }
+    return val;
+}
+
+var currentDiv;
+var currentElement;
+function popup_score(element, score) {
+    popdown_score();
+    var left = getLeftOffset(element);
+    var top = getTopOffset(element);
+    var div = document.createElement("div");
+    div.className = "LC_chrt_popup";
+    div.appendChild(document.createTextNode(score));
+    div.style.position = "absolute";
+    div.style.top = (top - 25) + "px";
+    div.style.left = (left - 10) + "px";
+    currentDiv = div;
+    document.body.insertBefore(div, document.body.childNodes[0]);
+    element.className = "LC_chrt_popup_up";
+    currentElement = element;
+}
+
+function popdown_score() {
+    if (currentDiv) {
+        document.body.removeChild(currentDiv);
+    }
+    if (currentElement) {
+        currentElement.className = 'LC_chrt_popup_exists';
+    }
+    currentDiv = undefined;
+}
+</script>
+JS
+
     #
     # Let the user know what we are doing
     my $studentcount = scalar(@Apache::lonstatistics::Students); 
@@ -1374,7 +1455,7 @@ sub excel_outputstudent {
     foreach my $field (@to_show) {
         my $value = $student->{$field};
         if ($field eq 'comments') {
-            $value = &Apache::lonmsg::retrieve_instructor_comments
+            $value = &Apache::lonmsgdisplay::retrieve_instructor_comments
                 ($student->{'username'},$student->{'domain'});
         }
         $excel_sheet->write($rows_output,$cols_output++,$value);
@@ -1656,7 +1737,7 @@ sub csv_outputstudent {
     foreach my $field (@to_show) {
         my $value = $student->{$field};
         if ($field eq 'comments') {
-            $value = &Apache::lonmsg::retrieve_instructor_comments
+            $value = &Apache::lonmsgdisplay::retrieve_instructor_comments
                 ($student->{'username'},$student->{'domain'});
         }        
         $Str .= '"'.&Apache::loncommon::csv_translate($value).'",';
@@ -1748,6 +1829,18 @@ sub csv_finish {
 
 }
 
+# This function will return an HTML string including a star, with
+# a mouseover popup showing the "real" value. An optional second
+# argument lets you show something other than a star.
+sub show_star {
+    my $popup = shift;
+    my $symbol = shift || '*';
+    # Escape the popup for JS.
+    $popup =~ s/([^-a-zA-Z0-9:;,._ ()|!\/?=&*])/'\\' . sprintf("%lo", ord($1))/ge;
+    
+    return "<span class=\"LC_chrt_popup_exists\" onmouseover='popup_score(this, \"$popup\");return false;' onmouseout='popdown_score();return false;'>$symbol</span>";
+}
+
 #######################################################
 #######################################################
 
@@ -1813,12 +1906,12 @@ sub student_tries_on_sequence {
                 if ($status eq 'excused') {
                     $symbol = 'x';
                     $max--;
-                } elsif ($status eq 'correct_by_override') {
+                } elsif ($status eq 'correct_by_override' && !$resource->is_task()) {
                     $symbol = '+';
                     $sum++;
                 } elsif ($tries > 0) {
                     if ($tries > 9) {
-                        $symbol = '*';
+                        $symbol = show_star($tries);
                     } else {
                         $symbol = $tries;
                     }
@@ -1861,11 +1954,12 @@ sub student_tries_on_sequence {
                 if (length($symbol) > 1) {
                     &Apache::lonnet::logthis('length of symbol "'.$symbol.'" > 1');
                 }
-                $symbol = '<a href="/adm/grades'.
-                    '?symb='.&Apache::lonnet::escape($resource->symb).
+                my $link = '/adm/grades'.
+                    '?symb='.&escape($resource->symb).
                         '&student='.$student->{'username'}.
                             '&userdom='.$student->{'domain'}.
-                                '&command=submission">'.$symbol.'</a>';
+                                '&command=submission';
+                $symbol = &link($symbol, $link);
             }
             $value .= $symbol;
         }
@@ -1880,6 +1974,37 @@ sub student_tries_on_sequence {
     return ($Str,$performance_length,$sum,$max,\@TriesData);
 }
 
+=pod
+
+=item &link
+
+Inputs:
+
+=over 4
+
+=item $text
+
+=item $target
+
+=back
+
+Takes the text and creates a link to the $text that honors
+the value of 'new window' if clicked on, but uses a real 
+'href' so middle and right clicks still work.
+
+$target and $text are assumed to be already correctly escaped; i.e., it
+can be dumped out directly into the output stream as-is.
+
+=cut
+
+sub link {
+    my ($text,$target) = @_;
+    return 
+        "<a href='$target' onclick=\"t=this.href;if(new_window)"
+        ."{window.open(t)}else{return void(window."
+        ."location=t)};return false;\">$text</a>";
+}
+
 #######################################################
 #######################################################
 
@@ -1953,7 +2078,7 @@ sub student_performance_on_sequence {
                 $symbol = sprintf("%.0f",$symbol);
             }
             if (length($symbol) > 1) {
-                $symbol = '*';
+                $symbol = show_star($symbol);
             }
             if (exists($resource_data->{'resource.'.$part.'.solved'}) &&
                 $resource_data->{'resource.'.$part.'.solved'} ne '') {
@@ -1984,11 +2109,12 @@ sub student_performance_on_sequence {
             push (@ScoreData,$partscore);
             #
             if ( ($links eq 'yes' && $symbol ne ' ') || ($links eq 'all')) {
-                $symbol = '<a href="/adm/grades'.
-                    '?symb='.&Apache::lonnet::escape($symb).
+                my $link = '/adm/grades' .
+                    '?symb='.&escape($symb).
                     '&student='.$student->{'username'}.
                     '&userdom='.$student->{'domain'}.
-                    '&command=submission">'.$symbol.'</a>';
+                    '&command=submission';
+                $symbol = &link($symbol, $link);
             }
             $Str .= $symbol;
         }