--- loncom/interface/Attic/lonchart.pm 2002/06/05 05:05:38 1.43
+++ loncom/interface/Attic/lonchart.pm 2002/07/08 15:03:25 1.57
@@ -1,7 +1,7 @@
# The LearningOnline Network with CAPA
# (Publication Handler
#
-# $Id: lonchart.pm,v 1.43 2002/06/05 05:05:38 stredwic Exp $
+# $Id: lonchart.pm,v 1.57 2002/07/08 15:03:25 stredwic Exp $
#
# Copyright Michigan State University Board of Trustees
#
@@ -46,6 +46,59 @@
#
###
+=pod
+
+=head1 NAME
+
+lonchart
+
+=head1 SYNOPSIS
+
+Quick display of students grades for a course in a compressed table format.
+
+=head1 DESCRIPTION
+
+This module process all student grades for a course and turns them into a
+table like structure.
+
+This is part of the LearningOnline Network with CAPA project
+described at http://www.lon-capa.org
+
+lonchart presents the user with a condensed view all a course's data. The
+class title, the number of students, and the date for the last update of the
+displayed data. There is also a legend that describes the chart values.
+
+For each valid grade for a student is linked with a submission record for that
+problem. The ability to add and remove columns of data from the chart was
+added for reducing the burden of having to scroll through large quantities
+of data. The interface also allows for sorting of students by username,
+last name, and section number of class. Active and expired students are
+also available.
+
+The interface is controlled by three primary buttons: Recalculate Chart,
+Refresh Chart, and Reset Selections. Recalculate Chart will update
+the chart to the most recent data and keep the display settings for the chart
+the same. Refresh Chart is used to redisplay the chart after selecting
+different output formatting. Reset Selections is used to set the chart
+display options back to default values.
+
+=head1 CODE LAYOUT DESCRIPTION
+
+The code is broken down into five components: formatting data for printing,
+downloading data from servers, processing data, helper functions,
+and the central processing functions. The module is broken into chunks
+for each component.
+
+=head1 PACKAGES USED
+
+ Apache::Constants qw(:common :http)
+ Apache::lonnet()
+ Apache::loncommon()
+ HTML::TokeParser
+ GDBM_File
+
+=cut
+
package Apache::lonchart;
use strict;
@@ -55,288 +108,946 @@ use Apache::loncommon();
use HTML::TokeParser;
use GDBM_File;
-# -------------------------------------------------------------- Module Globals
-my %hash;
-my %CachData;
-my @cols;
-my $r;
-my $c;
-
-# ------------------------------------------------------------- Find out status
+#my $jr;
+
+=pod
+
+=head1 FORMAT DATA FOR PRINTING
+
+=cut
+
+# ----- FORMAT PRINT DATA ----------------------------------------------
+
+=pod
+
+=item &FormatStudentInformation()
+
+This function produces a formatted string of the student's information:
+username, domain, section, full name, and PID.
+
+=over 4
+
+Input: $cache, $name, $studentInformation, $spacePadding
+
+$cache: This is a pointer to a hash that is tied to the cached data
+
+$name: The name and domain of the current student in name:domain format
+
+$studentInformation: A pointer to an array holding the names used to
+
+remove data from the hash. They represent the name of the data to be removed.
+
+$spacePadding: Extra spaces that represent the space between columns
+
+Output: $Str
-sub ExtractStudentData {
- my ($name,$coid)=@_;
+$Str: Formatted string.
+
+=back
+
+=cut
+
+sub FormatStudentInformation {
+ my ($cache,$name,$studentInformation,$spacePadding)=@_;
+ my $Str='';
+
+ for(my $index=0; $index<(scalar @$studentInformation); $index++) {
+ if(!&ShouldShowColumn($cache, 'heading'.$index)) {
+ next;
+ }
+ my $data=$cache->{$name.':'.$studentInformation->[$index]};
+ $Str .= $data;
+
+ my @dataLength=split(//,$data);
+ my $length=scalar @dataLength;
+ $Str .= (' 'x($cache->{$studentInformation->[$index].'Length'}-
+ $length));
+ $Str .= $spacePadding;
+ }
+
+ return $Str;
+}
+
+=pod
+
+=item &FormatStudentData()
+
+First, FormatStudentInformation is called and prefixes the course information.
+This function produces a formatted string of the student's course information.
+Each column of data represents all the problems for a given sequence. For
+valid grade data, a link is created for that problem to a submission record
+for that problem.
+
+=over 4
+
+Input: $name, $studentInformation, $spacePadding, $ChartDB
+
+$name: The name and domain of the current student in name:domain format
+
+$studentInformation: A pointer to an array holding the names used to
+remove data from the hash. They represent
+the name of the data to be removed.
+
+$spacePadding: Extra spaces that represent the space between columns
+
+$ChartDB: The name of the cached data database which will be tied to that
+database.
+
+Output: $Str
+
+$Str: Formatted string that is an entire row of the chart. It is a
+concatenation of student information and student course information.
+
+=back
+
+=cut
+
+sub FormatStudentData {
+ my ($name,$studentInformation,$spacePadding,$ChartDB)=@_;
my ($sname,$sdom) = split(/\:/,$name);
- my $ResId;
- my $Code;
- my $Tries;
- my $Wrongs;
- my %TempHash;
- my $Version;
- my $problemsCorrect;
- my $problemsSolved;
- my $totalProblems;
- my $LatestVersion;
my $Str;
+ my %CacheData;
+ unless(tie(%CacheData,'GDBM_File',$ChartDB,&GDBM_READER,0640)) {
+ return '';
+ }
# Handle Student information ------------------------------------------
+ # Handle user data
+ $Str=&FormatStudentInformation(\%CacheData, $name, $studentInformation,
+ $spacePadding);
+
# Handle errors
-# if($CachData{$name.':error'} =~ /environment/) {
-# my $errorMessage = $CachData{$name.':error'};
-# return '
';
return $Str;
}
+=pod
+
+=item &CreateColumnSelectionBox()
+
+If there are columns not being displayed then this selection box is created
+with a list of those columns. When selections are made and the page
+refreshed, the columns will be removed from this box and the column is
+put back in the chart. If there is no columns to select, no row is added
+to the interface table.
+
+=over 4
+Input: $CacheData, $headings
+
+
+$CacheData: A pointer to a hash tied to the cached data
+
+$headings: An array of the names of the columns for the student information.
+They are used for displaying which columns are missing.
+
+Output: $notThere
+
+$notThere: The string contains one row of a table. The first column has the
+name of the selection box. The second contains the selection box
+which has a size of four.
+
+=back
+
+=cut
+
+sub CreateColumnSelectionBox {
+ my ($CacheData,$headings)=@_;
+
+ my $missing=0;
+ my $notThere='
Select column to view:';
+ my $name;
+ $notThere .= '
';
+ $notThere .= '';
+ } else {
+ $notThere='
';
+ }
+
+ return $notThere.'
';
+}
+
+=pod
+
+=item &CreateColumnSelectors()
+
+This function generates the checkboxes above the column headings. The
+column will be removed if the checkbox is unchecked.
+
+=over 4
+
+Input: $CacheData, $headings
+
+$CacheData: A pointer to a hash tied to the cached data
+
+$headings: An array of the names of the columns for the student
+information. They are used to know what are the student information columns
+
+Output: $present
+
+$present: The string contains the first row of a table. Each column contains
+a checkbox which is left justified. Currently left justification is used
+for consistency of location over the column in which it presides.
+
+=back
+
+=cut
+
+sub CreateColumnSelectors {
+ my ($CacheData,$headings)=@_;
+
+ my $found=0;
+ my ($name, $length, $position);
+
+ my $present = '
'."\n";;
+}
+
+=pod
+
+=item &CreateForm()
+
+The interface for this module consists primarily of the controls in this
+function. The student status selection (active, expired, any) is set here.
+The sort buttons: username, last name, and section are set here. The
+other buttons are Recalculate Chart, Refresh Chart, and Reset Selections.
+These controls are in a table to clean up the interface.
+
+=over 4
+
+Input: $CacheData
+
+$CacheData is a hash pointer to tied database for cached data.
+
+Output: $Ptr
+
+$Ptr is a string containing all the html for the above mentioned buttons.
+
+=back
+
+=cut
+
sub CreateForm {
+ my ($CacheData)=@_;
my $OpSel1='';
my $OpSel2='';
my $OpSel3='';
- my $Status = $ENV{'form.status'};
+ my $Status = $CacheData->{'form.status'};
if ( $Status eq 'Any' ) { $OpSel3='selected'; }
elsif ($Status eq 'Expired' ) { $OpSel2 = 'selected'; }
else { $OpSel1 = 'selected'; }
- my $Ptr = '