--- loncom/interface/lonquickgrades.pm	2011/01/21 16:28:32	1.64
+++ loncom/interface/lonquickgrades.pm	2011/03/28 01:26:39	1.83
@@ -1,7 +1,7 @@
 # The LearningOnline Network with CAPA
 # Quick Student Grades Display
 #
-# $Id: lonquickgrades.pm,v 1.64 2011/01/21 16:28:32 www Exp $
+# $Id: lonquickgrades.pm,v 1.83 2011/03/28 01:26:39 www Exp $
 #
 # Copyright Michigan State University Board of Trustees
 #
@@ -62,7 +62,8 @@ sub real_handler {
     $r->send_http_header;
 
     my $showPoints =
-        $env{'course.'.$env{'request.course.id'}.'.grading'} eq 'standard';
+        (($env{'course.'.$env{'request.course.id'}.'.grading'} eq 'standard')
+      || ($env{'course.'.$env{'request.course.id'}.'.grading'} eq 'categories'));
     my $notshowSPRSlink =
         (($env{'course.'.$env{'request.course.id'}.'.grading'} eq 'external')
       || ($env{'course.'.$env{'request.course.id'}.'.grading'} eq 'externalnototals'));
@@ -80,13 +81,38 @@ sub real_handler {
 
     &startGradeScreen($r,'quick');
 
-    $r->rflush();
-
-#    my $uname='korte';
-#    my $udom='gerd';
-
+    my $cangrade=&Apache::lonnet::allowed('mgr');
+#
+# Pick student
+#
     my $uname;
     my $udom;
+    my $stdid;
+    if ($cangrade) {
+        if ($env{'form.uname'}) { $uname=$env{'form.uname'}; }
+        if ($env{'form.udom'}) { $udom=$env{'form.udom'}; }
+        if ($env{'form.id'}) { $stdid=$env{'form.id'}; }
+        if (($stdid) && ($udom)) {
+            $uname=(&Apache::lonnet::idget($udom,$stdid))[1];
+        }
+        if (($stdid) && (!$uname)) {
+            $r->print('<p><span class="LC_warning">'.&mt("Unknown Student/Employee ID: [_1]",$stdid).'</span></p>');
+            $stdid='';
+        }
+        $r->print('<form method="post" name="quickform" action="/adm/quickgrades">');
+        my $chooseopt=&Apache::loncommon::select_dom_form($udom,'udom').' '.
+           &Apache::loncommon::selectstudent_link('quickform','uname','udom');
+        $r->print("<p>\n".&Apache::loncommon::studentbrowser_javascript()."\n");
+        $r->print(&mt('For User [_1] or Student/Employee ID [_2] at Domain [_3]'
+                 ,'<input type="text" value="'.$uname.'" size="12" name="uname" />'
+                 ,'<input type="text" value="'.$stdid.'" size="12" name="id" /> '
+                 ,$chooseopt).'<br />'.
+                 '<input type="submit" name="display" value="'.&mt('Update Display').'" /></p>');
+        if (($uname) && ($udom)) {
+            $r->print('<p>'.&mt('Full Name: [_1]',&Apache::loncommon::plainname($uname,$udom)).'</p>');
+        }
+    }
+    $r->rflush();
 
     my ($navmap,$totalParts,$totalPossible,$totalRight,$totalAttempted,$topLevelParts,$topLevelRight,$topLevelAttempted)=
        &getData($showPoints,$uname,$udom);
@@ -98,6 +124,7 @@ sub real_handler {
        &outputTable($r,$showPoints,$notshowTotals,
                  $navmap,$totalParts,$totalPossible,$totalRight,$totalAttempted,$topLevelParts,$topLevelRight,$topLevelAttempted);
     }
+    if ($cangrade) { $r->print("\n</form>\n"); }
     &endGradeScreen($r);
     return OK;
 
@@ -150,7 +177,14 @@ sub startGradeScreen {
     }
     if ($allowed_to_edit) {
        $r->print("\n".'<li'.($mode eq 'grading'?' class="active"':'').'><a href="/adm/grades"><b>&nbsp;&nbsp;&nbsp;&nbsp;'.
-                                                                 &mt('Problem Grading').'&nbsp;&nbsp;&nbsp;&nbsp;</b></a></li>');
+                                                                 &mt('Content Grading').'&nbsp;&nbsp;&nbsp;&nbsp;</b></a></li>');
+       if ($env{'form.symb'}) {
+          $r->print("\n".'<li'.($mode eq 'probgrading'?' class="active"':'').'><a href="/adm/grades?symb='.
+                                              &Apache::lonhtmlcommon::entity_encode($env{'form.symb'}).
+                                              '&command=gradingmenu"><b>&nbsp;&nbsp;&nbsp;&nbsp;'.
+                                              &mt('Problem Grading').'&nbsp;&nbsp;&nbsp;&nbsp;</b></a></li>');
+
+       }
     }
     $r->print("\n".'</ul>'."\n");
     $r->print('<div class="LC_Box" style="clear:both;margin:0;"><div id="maincoursedoc" style="margin:0 0;padding:0 0;"><div class="LC_ContentBox" id="mainCourseDocuments" style="display: block;">');
@@ -158,7 +192,7 @@ sub startGradeScreen {
 
 sub endGradeScreen {
    my ($r)=@_;
-   $r->print('</div></div></div>');
+   $r->print('</div></div></div>'.&Apache::loncommon::end_page());
 }
 
 
@@ -166,8 +200,6 @@ sub getData {
 
     my ($showPoints,$uname,$udom)=@_;
 
-    &Apache::lonnet::logthis("About to call with $uname $udom");
-
     # Create the nav map
     my $navmap = Apache::lonnavmaps::navmap->new($uname,$udom);
 
@@ -235,8 +267,12 @@ sub getData {
 		    $totalRight += $score;
 		    $partsCount += $curRes->weight($part);
 
+                    $curRes->{DATA}->{PROB_SCORE}  += $score;
+                    $curRes->{DATA}->{PROB_WEIGHT} += $curRes->weight($part);
+
 		    if ($curRes->opendate($part) < $now) {
 			$totalPossible += $curRes->weight($part);
+                        $curRes->{DATA}->{PROB_POSSIBLE} += $curRes->weight($part);
 		    }
 		    $totalParts += $curRes->weight($part);
 		} else {
@@ -369,7 +405,7 @@ sub outputTable {
     # If there were any problems at the top level, print an extra "catchall"
     if ($topLevelParts > 0) {
         my $ratio = $topLevelRight / $topLevelParts;
-        my $color = mixColors(\@start, \@end, $ratio);
+        my $color = &mixColors(\@start, \@end, $ratio);
         $r->print(&Apache::loncommon::start_data_table_row()
                  .'<td style="background-color:'.$color.';">');
         $r->print(&mt("Problems Not Contained In A Folder")."</td><td>");
@@ -381,7 +417,7 @@ sub outputTable {
 # show totals (if applicable), close table
 #
     if ($showPoints) {
-        my $maxHelpLink = Apache::loncommon::help_open_topic("Quick_Grades_Possibly_Correct");
+        my $maxHelpLink = &Apache::loncommon::help_open_topic("Quick_Grades_Possibly_Correct");
 
         $title = $showPoints ? "Points" : "Parts Done";
         my $totaltitle = $showPoints ? &mt("Awarded Total Points") : &mt("Total Parts Done");
@@ -393,13 +429,15 @@ sub outputTable {
                  .&Apache::loncommon::end_data_table_row());
     }
 
-    $r->print(&Apache::loncommon::end_data_table()
-             .&Apache::loncommon::end_page());
-
+    $r->print(&Apache::loncommon::end_data_table());
 }
 
 #
-# Outputting category-based grades.
+# === Outputting category-based grades.
+#
+# $category{'order'}: output order of categories by id
+# $category{'all'}: complete list of all categories 
+# $category{$id.'_name'}: display-name of category
 #
 
 sub outputCategories {
@@ -413,28 +451,563 @@ sub outputCategories {
     my $cdom = $env{'course.'.$env{'request.course.id'}.'.domain'};
     my $cnum = $env{'course.'.$env{'request.course.id'}.'.num'};
     my %categories=();
+# Loading old categories
+    %categories=&Apache::lonnet::dump('grading_categories',$cdom,$cnum);
 # Storing
-    if (($cangrade) && ($env{'form.storechanges'})) {
-
+    if (($cangrade) && (($env{'form.storechanges'}) || ($env{'form.storemove'} ne '') || ($env{'form.cmd'} ne ''))) {
+# Process the changes
+        %categories=&process_category_edits($r,$cangrade,%categories);
 # Actually store
         &Apache::lonnet::put('grading_categories',\%categories,$cdom,$cnum);
+    }
+# new categories loaded now
+    &output_category_table($r,$cangrade,$navmap,%categories);
+#
+    if ($cangrade) {
+        $r->print('<input type="hidden" name="storemove" value="" />'.
+                  '<input type="hidden" name="cmd" value="" />'.
+                  '<input type="submit" name="storechanges" value="'.&mt("Save changes to grading categories").'" />'.
+                  '<script>function storecmd (cmd) { document.quickform.cmd.value=cmd; document.quickform.submit(); }</script>');
+    }
+#
+# Debug
+#
+#    my %data=&dumpdata($navmap);
+#    foreach (keys(%data)) {
+#        $r->print("\n<br />".$_.'='.$data{$_});
+#    }
+}
+
+#
+# Get data for all symbs
+#
+
+sub dumpdata {
+    my ($navmap)=@_;
+    my %returndata=();
+
+# Run through the map and get all data
+
+    my $iterator = $navmap->getIterator(undef, undef, undef, 1);
+    my $depth = 1;
+    $iterator->next(); # ignore first BEGIN_MAP
+    my $curRes = $iterator->next();
+
+    while ($depth > 0) {
+        if ($curRes == $iterator->BEGIN_MAP()) {$depth++;}
+        if ($curRes == $iterator->END_MAP()) { $depth--; }
+        if (ref($curRes)) {
+            if ($curRes->is_map()) {
+                $returndata{$curRes->symb()}='folder:'.$curRes->{DATA}->{CHILD_PARTS}.':'.$curRes->{DATA}->{CHILD_ATTEMPTED}.':'.$curRes->{DATA}->{CHILD_CORRECT};
+            } else {
+                $returndata{$curRes->symb()}='res:'.$curRes->{DATA}->{PROB_WEIGHT}.':'.$curRes->{DATA}->{PROB_POSSIBLE}.':'.$curRes->{DATA}->{PROB_SCORE};
+            } 
+        }
+        $curRes = $iterator->next();
+    }
+    return %returndata;
+}
+
+#
+# Process editing commands, update category hash
+#
+
+sub process_category_edits {
+    my ($r,$cangrade,%categories)=@_;
+    unless ($cangrade) { return %categories; }
+# First store everything
+    foreach my $id (split(/\,/,$categories{'order'})) {
+# Set names, types, and weight (there is only one of each per category)
+        %categories=&set_category_name($cangrade,$id,$env{'form.name_'.$id},%categories);
+        %categories=&set_category_total($cangrade,$id,$env{'form.totaltype_'.$id},$env{'form.total_'.$id},%categories);
+        %categories=&set_category_weight($cangrade,$id,$env{'form.weight_'.$id},%categories);
+        %categories=&set_category_displayachieved($cangrade,$id,$env{'form.displayachieved_'.$id},%categories);
+# Set values for category rules (before names may change)
+        %categories=&set_category_rules($cangrade,$id,%categories);
+    }
+
+# Now deal with commands
+    my $cmd=$env{'form.cmd'};
+    if ($cmd eq 'createnewcat') {
+        %categories=&make_new_category($r,$cangrade,undef,%categories);
+    } elsif ($cmd=~/^up\_(.+)$/) {
+        %categories=&move_up_category($1,$cangrade,%categories);
+    } elsif ($cmd=~/^down\_(.+)$/) {
+        %categories=&move_down_category($1,$cangrade,%categories);
+    } elsif ($cmd=~/^delcat\_(.+)$/) {
+        %categories=&del_category($1,$cangrade,%categories);
+    } elsif ($cmd=~/^addcont\_(.+)$/) {
+        %categories=&add_category_content($1,$cangrade,$env{'form.addcont_'.$1.'_symb'},%categories);
+    } elsif ($cmd=~/^delcont\_(.+)\_\_\_\_\_\_(.+)$/) {
+        %categories=&del_category_content($1,$cangrade,$2,%categories);
+    } elsif ($cmd=~/^newrule\_(.+)$/) {
+        %categories=&add_calculation_rule($1,$cangrade,':',%categories);
+    } elsif ($cmd=~/^delrule\_(.+)\_\_\_\_\_\_(.*)$/) {
+        %categories=&del_calculation_rule($1,$cangrade,$2,%categories);
+    }
+# Move to a new position
+    my $moveid=$env{'form.storemove'};
+    if ($moveid) {
+        %categories=&move_category($moveid,$cangrade,$env{'form.newpos_'.$moveid},%categories);
+    } 
+    return %categories;
+}
+
+#
+# Output the table
+#
+
+sub output_category_table {
+    my ($r,$cangrade,$navmaps,%categories)=@_;
+    my $sum=0;
+    my $total=0;
+    $r->print(&Apache::loncommon::start_data_table());
+#
+    &output_category_table_header($r,$cangrade);
+#
+    my @order=split(/\,/,$categories{'order'});
+#
+    my $maxpos=$#order;
+    for (my $i=0;$i<=$maxpos;$i++) {
+        my ($value,$weight)=&output_and_calc_category($r,$cangrade,$navmaps,$order[$i],$i,$maxpos,%categories);
+        $sum+=$value*$weight;
+        $total+=$weight;
+    }
+#
+    &bottom_line_category($r,$cangrade,$sum,$total);
+#
+    $r->print(&Apache::loncommon::end_data_table());
+    return $sum;
+}
+
+sub output_category_table_header {
+    my ($r,$cangrade)=@_;
+    $r->print(&Apache::loncommon::start_data_table_header_row());
+    if ($cangrade) {
+        $r->print('<th colspan="2">'.&mt("Move").'</th><th>'.&mt('Action').'</th>');
+    }
+    $r->print('<th>'.&mt('Category').'</th>'.
+              '<th>'.&mt('Contents').'</th>'.
+              '<th>'.&mt('Total Points').'</th>'.
+              '<th>'.&mt('Calculation').'</th>'.
+              '<th>'.&mt('Relative Weight').'</th>'.
+              '<th>'.&mt('Achieved').'</th>');
+    $r->print(&Apache::loncommon::end_data_table_header_row());
+}
+
+
+#
+# Output one category to table
+#
+
+sub output_and_calc_category {
+    my ($r,$cangrade,$navmaps,$id,$currentpos,$maxpos,%categories)=@_;
+    my $value=0;
+    my $weight=0;
+    my $iconpath = &Apache::loncommon::lonhttpdurl($r->dir_config('lonIconsURL') . "/");
+    my %lt=&Apache::lonlocal::texthash(
+           'up' => 'Move Up',
+           'dw' => 'Move Down');
+    $r->print("\n".&Apache::loncommon::start_data_table_row());
+
+    if ($cangrade) {
+        $r->print(<<ENDMOVE);
+<td>
+<div class="LC_docs_entry_move">
+  <a href='javascript:storecmd("up_$id");'>
+    <img src="${iconpath}move_up.gif" alt='$lt{'up'}' class="LC_icon" />
+  </a>
+</div>
+<div class="LC_docs_entry_move">
+  <a href='javascript:storecmd("down_$id");'>
+    <img src="${iconpath}move_down.gif" alt='$lt{'dw'}' class="LC_icon" />
+  </a>
+</div>
+</td>
+ENDMOVE
+        $r->print("\n<td>\n<select name='newpos_$id' onchange='this.form.storemove.value=\"$id\";this.form.submit()'>");
+        for (my $i=0;$i<=$maxpos;$i++) {
+            if ($i==$currentpos) {
+                $r->print('<option value="" selected="selected">('.$i.')</option>');
+            } else {
+                $r->print('<option value="'.$i.'">'.$i.'</option>');
+            }
+        }
+        $r->print("\n</select>\n</td>\n");
+        $r->print('<td><a href="javascript:storecmd(\'delcat_'.$id.'\');">'.&mt('Delete').'</a></td>');
+        $r->print('<td><input type="text" name="name_'.$id.
+                  '" value="'.&Apache::lonhtmlcommon::entity_encode($categories{$id.'_name'}).'" /></td>');
+    } else {
+        $r->print('<td>'.$categories{$id.'_name'}.'</td>');
+    }
+# Content
+    $r->print('<td><ul>');
+    foreach my $contentid (split(/\,/,$categories{$id.'_content'})) {
+        $r->print('<li>');
+        $r->print(&Apache::lonnet::gettitle($contentid));
+        if ($cangrade) {
+           $r->print(' <a href="javascript:storecmd(\'delcont_'.$id.'______'.$contentid.'\');">'.&mt('Delete').'</a>');
+        }
+        $r->print('</li>');
+    }
+    $r->print('</ul>');
+    if ($cangrade) {
+        $r->print('<br />'.&mt('Add Problem or Folder').'<br />'.
+                  &Apache::lonstathelpers::problem_selector('.',undef,1,1,'addcont_'.$id.'_',1,'this.form.cmd.value="addcont_'.$id.'";this.form.submit();'));
+    }
+    $r->print('</td>'); 
+
+# Total
+    if ($cangrade) {
+       $r->print('<td>'.
+                  '<select name="totaltype_'.$id.'">'.
+                  '<option value="default"'.($categories{$id.'_totaltype'} eq 'default'?' selected="selected"':'').'>'.&mt('default').'</option>'.
+                  '<option value="typein"'.($categories{$id.'_totaltype'} eq 'typein'?' selected="selected"':'').'>'.&mt('Type-in value').'</option>'.
+                  '</select>'.
+                  '<input type="text" size="4" name="total_'.$id.
+                  '" value="'.&Apache::lonhtmlcommon::entity_encode($categories{$id.'_total'}).'" /></td>');
+    } else {
+        $r->print('<td>'.($categories{$id.'_totaltype'} eq 'default'?&mt('default'):$categories{$id.'_total'}).'</td>');
+    }
+
+
+# Calculation
+    $r->print('<td><ul>');
+    foreach my $calcrule (split(/\,/,$categories{$id.'_calculations'})) {
+        $r->print('<li>');
+        my ($code,$value)=split(/\:/,$calcrule);
+        $r->print(&pretty_prt_rule($cangrade,$id,$code,$value));
+        if ($cangrade) {
+           $r->print(' <a href="javascript:storecmd(\'delrule_'.$id.'______'.$code.'\');">'.&mt('Delete').'</a>');
+        }
+        $r->print('</li>');
+    }
+    $r->print('</ul>');
+    if ($cangrade) {
+        $r->print('<br />'.&new_calc_rule_form($id));
+    }
+    $r->print('</td>');
+
+# Weight
+    if ($cangrade) {
+       $r->print('<td>'.
+                  '<input type="text" size="4" name="weight_'.$id.
+                  '" value="'.&Apache::lonhtmlcommon::entity_encode($categories{$id.'_weight'}).'" /></td>');
+    } else {
+        $r->print('<td>'.$categories{$id.'_weight'}.'</td>');
+    }
+# Achieved
+    $r->print('<td>');
+    if ($cangrade) {
+        $r->print('<select name="displayachieved_'.$id.'">'.
+                  '<option value="percent"'.($categories{$id.'_displayachieved'} eq 'percent'?' selected="selected"':'').'>'.&mt('percent').'</option>'.
+                  '<option value="points"'.($categories{$id.'_displayachieved'} eq 'points'?' selected="selected"':'').'>'.&mt('points').'</option>'.
+                  '</select>');
+    } else {
+        if ($categories{$id.'_displayachieved'} eq 'percent') {
+            $r->print(&mt('percent'));
+        } else {
+            $r->print(&mt('points'));
+        }
+    }
+    $r->print('</td>');
+
+    return ($value,$weight);
+}
+
+#
+# Bottom line with grades
+#
+
+sub bottom_line_category {
+    my ($r,$cangrade,$sum,$total)=@_;
+    $r->print(&Apache::loncommon::start_data_table_row());
+    if ($cangrade) {
+        $r->print('<td colspan="3"><a href="javascript:storecmd(\'createnewcat\');">'.&mt('Create New Category').'</a></td>');
+    }
+    $r->print('<td colspan="6">'.&mt('Current:').$sum.'<br />'.&mt('Total:').$total.'<br /></td>');
+}
+
+#
+# Make one new category
+#
+
+sub make_new_category {
+    my ($r,$cangrade,$ordernum,%categories)=@_;
+    unless ($cangrade) { return %categories; }
+# Generate new ID
+    my $id=time.'_'.$$.'_'.rand(10000);
+# Add new ID to list of all IDs ever created in this course
+    $categories{'all'}.=','.$id;
+    $categories{'all'}=~s/^\,//;
+# Add new ID to ordered list of displayed and evaluated categories
+    $categories{'order'}.=','.$id;
+    $categories{'order'}=~s/^\,//;
+# Move it into desired space
+    if (defined($ordernum)) {
+        %categories=&move_category($id,$cangrade,$ordernum,%categories);
+    }
+    $categories{$id.'_weight'}=0;
+    $categories{$id.'_totaltype'}='default';
+    $categories{$id.'_displayachieved'}='percent';
+    return %categories;
+}
+
+
+# === Calculation Rule Editing
+
+sub category_rule_codes {
+    return &Apache::lonlocal::texthash(
+                'droplow'  => 'Drop N lowest grade assignments',
+                'drophigh' => 'Drop N highest grade assignments',
+                'capabove' => 'Cap percentage above N percent',
+                'capbelow' => 'Cap percentage below N percent');
+}
+
+sub pretty_prt_rule {
+    my ($cangrade,$id,$code,$value)=@_;
+    my $cid=$id.'_'.$code;
+    my %lt=&category_rule_codes();
+    my $ret='<span class="LC_nobreak">';
+    if ($cangrade) {
+        $ret.='<select name="sel_'.$cid.'">';
+        foreach my $calc (''=>'',sort(keys(%lt))) {
+            $ret.='<option value="'.$calc.'"'.($calc eq $code?' selected="selected"':'').' />'.$lt{$calc}.'</input>';
+        }
+        $ret.='</select> N=<input type="text" size="5" name="val_'.$cid.'" value="'.$value.'" /></span>';
+    } else {
+        $ret.=$lt{$code}.'; N='.$value;
+    }
+    $ret.='</span>';
+    return $ret;
+}
+
+sub new_calc_rule_form {
+    my ($id)=@_;
+    return '<a href="javascript:storecmd(\'newrule_'.$id.'\');">'.&mt('New Calculation Rule').'</a>';
+}
+
+#
+# Add a calculation rule
+#
+
+sub add_calculation_rule {
+    my ($id,$cangrade,$newcontent,%categories)=@_;
+    unless ($cangrade) { return %categories; }
+    my %newcontent=($newcontent => 1);
+    foreach my $current (split(/\,/,$categories{$id.'_calculations'})) {
+        $newcontent{$current}=1;
+    }
+    $categories{$id.'_calculations'}=join(',',sort(keys(%newcontent)));
+    return %categories;
+}
+
+#
+# Delete a calculation rule
+#
+
+sub del_calculation_rule {
+    my ($id,$cangrade,$delcontent,%categories)=@_;
+    unless ($cangrade) { return %categories; }
+    my @newcontent=();
+    foreach my $current (split(/\,/,$categories{$id.'_calculations'})) {
+        unless ($current=~/^\Q$delcontent\E\:/) {
+            push(@newcontent,$current);
+        }
+    }
+    $categories{$id.'_calculations'}=join(',',@newcontent);
+    return %categories;
+}
+
+sub set_category_rules {
+    my ($cangrade,$id,%categories)=@_;
+    unless ($cangrade) { return %categories; }
+    my %lt=&category_rule_codes();
+    my @newrules=();
+    foreach my $code ('',(keys(%lt))) {
+        if ($env{'form.sel_'.$id.'_'.$code}) {
+            push(@newrules,$env{'form.sel_'.$id.'_'.$code}.':'.$env{'form.val_'.$id.'_'.$code});
+        }
+    }
+    $categories{$id.'_calculations'}=join(',',sort(@newrules));
+    return %categories;
+}
+
+
+# === Category Editing
+
+#
+# Add to category content
+#
+
+sub add_category_content {
+    my ($id,$cangrade,$newcontent,%categories)=@_;
+    unless ($cangrade) { return %categories; }
+    my %newcontent=($newcontent => 1);
+    foreach my $current (split(/\,/,$categories{$id.'_content'})) {
+        $newcontent{$current}=1;
+    }
+    $categories{$id.'_content'}=join(',',sort(keys(%newcontent)));
+    return %categories;
+}
+
+#
+# Delete from category content
+#
+
+sub del_category_content {
+    my ($id,$cangrade,$delcontent,%categories)=@_;
+    unless ($cangrade) { return %categories; }
+    my @newcontent=();
+    foreach my $current (split(/\,/,$categories{$id.'_content'})) {
+        unless ($current eq $delcontent) {
+            push(@newcontent,$current);
+        }
+    }
+    $categories{$id.'_content'}=join(',',@newcontent);
+    return %categories;
+}
+
+#
+# Delete category
+#
+
+sub del_category {
+    my ($id,$cangrade,%categories)=@_;
+    unless ($cangrade) { return %categories; }
+    my @neworder=();
+    foreach my $currentid (split(/\,/,$categories{'order'})) {
+        unless ($currentid eq $id) {
+            push(@neworder,$currentid);
+        }
+    }
+    $categories{'order'}=join(',',@neworder);
+    return %categories;
+}
+
+#
+# Move category up
+#
+
+sub move_up_category {
+    my ($id,$cangrade,%categories)=@_;
+    my $currentpos=&current_pos_category($id,%categories);
+    if ($currentpos<1) { return %categories; }
+    return &move_category($id,$cangrade,$currentpos-1,%categories);
+}
+
+#
+# Move category down
+#
+
+sub move_down_category {
+    my ($id,$cangrade,%categories)=@_;
+    my $currentpos=&current_pos_category($id,%categories);
+    my @order=split(/\,/,$categories{'order'});
+    if ($currentpos>=$#order) { return %categories; }
+    return &move_category($id,$cangrade,$currentpos+1,%categories);
+}
+
+#
+# Move a category to a desired position n the display order
+#
+
+sub move_category {
+    my ($id,$cangrade,$ordernum,%categories)=@_;
+    unless ($cangrade) { return %categories; }
+    my @order=split(/\,/,$categories{'order'});
+# Where is the index currently?
+    my $currentpos=&current_pos_category($id,%categories);
+    if (defined($currentpos)) {
+        if ($currentpos<$ordernum) {
+# This is moving to a higher index
+# ....X1234....
+# ....1234X....
+            for (my $i=$currentpos;$i<$ordernum;$i++) {
+                $order[$i]=$order[$i+1];
+            }
+            $order[$ordernum]=$id;
+        }
+        if ($currentpos>$ordernum) {
+# This is moving to a lower index
+# ....1234X....
+# ....X1234....
+            for (my $i=$currentpos;$i>$ordernum;$i--) {
+                $order[$i]=$order[$i-1];
+            }
+            $order[$ordernum]=$id;
+        }
+    }
+    $categories{'order'}=join(',',@order);
+    return %categories;
+}
+
+#
+#  Find current postion of a category in the order
+#
+
+sub current_pos_category {
+    my ($id,%categories)=@_;
+    my @order=split(/\,/,$categories{'order'});
+    for (my $i=0;$i<=$#order;$i++) {
+        if ($order[$i] eq $id) { return $i; }
+    }
+# not found
+    return undef;
+}
+
+#
+# Set name of a category
+#
+sub set_category_name {
+    my ($cangrade,$id,$name,%categories)=@_;
+    unless ($cangrade) { return %categories; }
+    $categories{$id.'_name'}=$name;
+    return %categories;
+}
+
+#
+# Set total of a category
+#
+sub set_category_total {
+    my ($cangrade,$id,$totaltype,$total,%categories)=@_;
+    unless ($cangrade) { return %categories; }
+    if (($categories{$id.'_total'} eq '') && ($total=~/\d/)) {
+        $totaltype='typein';
+    }
+    $categories{$id.'_totaltype'}=$totaltype;
+    if ($totaltype eq 'default') {
+        $categories{$id.'_total'}='';
     } else {
-# Loading
-        %categories=&Apache::lonnet::dump('grading_categories',$cdom,$cnum);
+        $total=~s/\D//gs;
+        unless ($total) { $total=0; }
+        $categories{$id.'_total'}=$total;
     }
-# categories loaded now
-# Form only generated if user can change the grading categories
-   if ($cangrade) {
-      $r->print('<form method="post">');
-   }
-#
-# Business logic here
-#
-   if ($cangrade) {
-      $r->print('<input type="submit" name="storechanges" value="'.&mt("Save changes to grading categories").'" /></form>');
-   }
+    return %categories;
 }
 
+sub set_category_weight {
+    my ($cangrade,$id,$weight,%categories)=@_;
+    unless ($cangrade) { return %categories; }
+    $weight=~s/\D//gs;
+    unless ($weight) { $weight=0; }
+    $categories{$id.'_weight'}=$weight;
+    return %categories;
+}
+
+sub set_category_displayachieved {
+    my ($cangrade,$id,$value,%categories)=@_;
+    unless ($cangrade) { return %categories; }
+    unless (($value eq 'percent') || ($value eq 'points')) { $value='percent'; }
+    $categories{$id.'_displayachieved'}=$value;
+    return %categories;
+}
+
+
+#
+# === end category-related
+#
+#
 # Pass this two refs to arrays for the start and end color, and a number
 # from 0 to 1 for how much of the latter you want to mix in. It will
 # return a string ready to show ("#FFC309");