--- loncom/homework/bridgetask.pm	2005/09/14 21:03:48	1.48
+++ loncom/homework/bridgetask.pm	2005/09/20 06:45:02	1.49
@@ -1,7 +1,7 @@
 # The LearningOnline Network with CAPA 
 # definition of tags that give a structure to a document
 #
-# $Id: bridgetask.pm,v 1.48 2005/09/14 21:03:48 albertel Exp $
+# $Id: bridgetask.pm,v 1.49 2005/09/20 06:45:02 albertel Exp $
 #
 # Copyright Michigan State University Board of Trustees
 #
@@ -158,6 +158,8 @@ sub add_grading_button {
 	$result.='<p>'.&mt("Review Queue has [_1] entries. [_2] of them are ready to be graded and [_3] of them are currently being graded",$entries,$ready,$locks);
 	$result.=' <input type="submit" name="reviewasubmission" value="'.
 	    &mt("Select an entry from the review queue").'" /> </p>'."\n";
+	$result.=' <input type="submit" name="regradeasubmission" value="'.
+	    &mt("Select a user to regrade.").'" /> </p>'."\n";
     }
     return $result;
 }
@@ -311,8 +313,8 @@ sub start_Task {
 	my $webgrade='yes';
 	if ($target eq 'webgrade') {
 	    $result.=$head_tag_start.$body_tag_start;
-	    $result.='<br />Review'.&show_queue('reviewqueue');
-	    $result.='<br />Grade'.&show_queue('gradingqueue');
+	    #$result.='<br />Review'.&show_queue('reviewqueue');
+	    #$result.='<br />Grade'.&show_queue('gradingqueue');
 	}
 	# FIXME Blast! still need to reorg this, need to reshow the
         #       queue being reviewed once done with the grade pass...
@@ -334,7 +336,7 @@ sub start_Task {
 	    &Apache::structuretags::initialize_storage();
 	    &Apache::lonhomework::showhash(%Apache::lonhomework::history);
 	    if ($target eq 'webgrade') {
-		$result.='<br />After -'.&show_queue($env{'form.queue'});
+		#$result.='<br />After -'.&show_queue($env{'form.queue'});
 		$result.="\n".'<table width="100%" style="width:100%" border="1">';
 		if ($status_code eq 'selected') {
 		    $form_tag_start.=
@@ -353,6 +355,8 @@ sub start_Task {
 		    $result.=&show_queue($env{'form.queue'},1);
 		} elsif ($status_code eq 'show_list') {
 		    $result.=&show_queue($env{'form.queue'},1);
+		} elsif ($status_code eq 'select_user') {
+		    $result.=&select_user();
 		} else {
 		    $result.='<b>'.&mt("No user to be graded.").'</b>';
 		}
@@ -390,6 +394,12 @@ sub get_key_todo {
 	return (undef,'show_list');
     }
 
+    if (defined($env{'form.regradeasubmission'})) {
+	&Apache::lonxml::debug("regrade a grading....");
+	$env{'form.queue'}='none';
+	return (undef,'select_user');
+    }
+
     my $queue=$env{'form.queue'};
 
     if (!defined($queue)) {
@@ -398,6 +408,20 @@ sub get_key_todo {
 
     my $gradingkey=&Apache::lonnet::unescape($env{'form.gradingkey'});
 
+    if ($env{'form.queue'} eq 'none') {
+	if (defined($env{'form.gradingkey'})) {
+	    if ($target eq 'webgrade') {
+		if ($env{'form.stop'}) {
+		    return (undef,'stop');
+		} elsif ($env{'form.next'}) {
+		    return (undef,'show_list');
+		}
+	    }
+	    return ($gradingkey,'selected');
+	} else {
+	    return (undef,'show_list');
+	}
+    }
     if (defined($env{'form.queue'}) && defined($env{'form.gradingkey'})
 	&& !defined($env{'form.gradingaction'}) 
 	&& $env{'form.queuemode'} eq 'selected') {
@@ -516,7 +540,9 @@ sub end_Task {
 		    $ungraded++;
 		} elsif ($status eq 'review') {
 		    $review++;
-		}	
+		} else {
+		    $ungraded++;
+		}
 	    }
 	    if ($optional_passed < $optional_required) {
 		$mandatory_failed++;
@@ -530,13 +556,14 @@ sub end_Task {
 		    &check_queue_unlock($env{'form.queue'});
 		    &Apache::lonxml::debug(" still needs review not changing status.");
 		} else {
-		    &move_between_queues('gradingqueue','reviewqueue');
+		    &move_between_queues($env{'form.queue'},'reviewqueue');
 		}
 	    } elsif ($ungraded) {
 		$Apache::lonhomework::results{"resource.$version.status"}='ungraded';
-		if ($env{'form.queue'} eq 'reviewqueue') {
+		if ($env{'form.queue'} eq 'reviewqueue' ||
+		    $env{'form.queue'} eq 'none' ) {
 		    &Apache::lonxml::debug("moving back.");
-		    &move_between_queues('reviewqueue','gradingqueue');
+		    &move_between_queues($env{'form.queue'},'gradingqueue');
 		} else {
 		    &check_queue_unlock($env{'form.queue'});
 		}
@@ -605,8 +632,13 @@ sub end_Task {
 
 sub move_between_queues {
     my ($src_queue,$dest_queue)=@_;
-    my $cur_data=&get_queue_data($src_queue);
-    if (!$cur_data) { return 'not_exist'; }
+    my $cur_data;
+    if ($src_queue ne 'none') {
+	$cur_data=&get_queue_data($src_queue);
+	if (!$cur_data) { return 'not_exist'; }
+    } else {
+	$cur_data = ['none'];
+    }
     my $result=&add_to_queue($dest_queue,$cur_data->[0]);
     if ($result ne 'ok') {
 	return $result;
@@ -617,6 +649,7 @@ sub move_between_queues {
 
 sub check_queue_unlock {
     my ($queue,$key,$allow_not_me)=@_;
+    if ($queue eq 'none') { return 'ok'; }
     my ($symb,$cid,$udom,$uname)=&Apache::lonxml::whichuser();
     if (!defined($key)) {
 	$key="$symb\0queue\0$uname\@$udom";
@@ -636,6 +669,7 @@ sub check_queue_unlock {
 
 sub remove_from_queue {
     my ($queue)=@_;
+    if ($queue eq 'none') { return 'ok'; }
     my ($symb,$cid,$udom,$uname)=&Apache::lonxml::whichuser();
     my $cnum=$env{'course.'.$cid.'.num'};
     my $cdom=$env{'course.'.$cid.'.domain'};
@@ -668,8 +702,25 @@ sub get_queue_data {
     return undef;
 }
 
+sub check_queue_for_key {
+    my ($cid,$queue,$todo)=@_;
+    my $cnum=$env{'course.'.$cid.'.num'};
+    my $cdom=$env{'course.'.$cid.'.domain'};
+    my %results=
+	&Apache::lonnet::get($queue,[$todo,"$todo\0locked"],$cdom,$cnum);
+    
+    if (exists($results{$todo}) && ref($results{$todo})) {
+	if (defined($results{"$todo\0locked"})) {
+	    return 'locked';
+	}
+	return 'enqueued';
+    }
+    return undef;
+}
+
 sub add_to_queue {
     my ($queue,$slot_name)=@_;
+    if ($queue eq 'none') { return 'ok'; }
     my ($symb,$cid,$udom,$uname)=&Apache::lonxml::whichuser();
     my $cnum=$env{'course.'.$cid.'.num'};
     my $cdom=$env{'course.'.$cid.'.domain'};
@@ -781,6 +832,11 @@ sub get_queue_counts {
     return ($entries,$ready_to_grade,$locks);
 }
 
+sub encode_queue_key {
+    my ($symb,$udom,$uname)=@_;
+    return "$symb\0queue\0$uname\@$udom";
+}
+
 sub decode_queue_key {
     my ($key)=@_;
     my ($symb,undef,$user) = split("\0",$key);
@@ -929,6 +985,87 @@ sub get_from_queue {
     return $todo;
 }
 
+sub select_user {
+    my ($symb,$cid)=&Apache::lonxml::whichuser();
+    my $result.='<table border="1">';
+
+    &Apache::grades::init_perm();
+    my ($classlist,$section,$fullname)=&Apache::grades::getclasslist('all',);
+    &Apache::grades::reset_perm();
+
+    foreach my $student (sort {lc($$fullname{$a}) cmp lc($$fullname{$b}) } keys %$fullname) {
+	my ($uname,$udom) = split(/:/,$student);
+	my %status = &get_student_status($symb,$cid,$udom,$uname);
+	my $queue = 'none';
+	if ($status{'reviewqueue'} eq 'enqueued') {
+	    $queue = 'reviewqueue';
+	} elsif ($status{'gradingqueue'} eq 'enqueued') {
+	    $queue = 'gradingqueue';
+	}
+	my $todo = 
+	    &Apache::lonnet::escape(&encode_queue_key($symb,$udom,$uname));
+	$result.=<<RESULT;
+<tr>
+  <td>
+    <form method="POST">
+      <input type="hidden" name="gradingkey" value="$todo" />
+      <input type="hidden" name="queue" value="$queue" />
+      <input type="hidden" name="webgrade" value="no" />
+     <input type="submit" name="submit" value="Regrade" />
+    </form>
+  <td>$fullname->{$student}</td>
+  <td>
+RESULT
+
+        if ($status{'status'} eq 'pass') {
+	    $result .= '<font color="green">'.&mt('Passed').'</font>';
+	} elsif ($status{'status'} eq 'fail') {
+	    $result .= '<font color="red">'.&mt('Failed').'</font>';
+	} elsif ($status{'status'} eq 'review') {
+	    $result .= '<font color="blue">'.&mt('Under Review').'</font>';
+	} elsif ($status{'status'} eq 'ungraded') {
+	    $result .= &mt('Ungraded');
+	} elsif ($status{'status'} ne '') {
+	    $result .= '<font color="orange">'.&mt('Unknown Status').'</font>';
+	} else {
+	    $result.="&nbsp;";
+	}
+	if ($status{'version'}) {
+	    $result .= ' '.&mt('Version').' '.$status{'version'};
+	}
+	$result.= '</td><td>';
+	if ($status{'reviewqueue'} eq 'enqueued') {
+	    $result .= &mt('Awaiting Review');
+	} elsif ($status{'reviewqueue'} eq 'locked') {
+	    $result .= &mt('Under Review');
+	} elsif ($status{'gradingqueue'} eq 'enqueued') {
+	    $result .= &mt('Awaiting Grading');
+	} elsif ($status{'gradingqueue'} eq 'locked') {
+	    $result .= &mt('Being Graded');
+	} else {
+	    $result.="&nbsp;";
+	}
+	$result.= '</td></tr>';
+    }
+    $result.='</table>';
+    return $result;
+}
+
+sub get_student_status {
+    my ($symb,$cid,$udom,$uname)=@_;
+    my %record = &Apache::lonnet::restore($symb,$env{'request.course.id'},
+					  $udom,$uname);
+    my %status;
+    $status{'status'}=$record{'resource.status'};
+    $status{'version'}=$record{'resource.version'};
+    $status{'grader'}=$record{'resource.grader'};
+    $status{'reviewqueue'}=&check_queue_for_key($cid,'reviewqueue',
+				       &encode_queue_key($symb,$udom,$uname));
+    $status{'gradingqueue'}=&check_queue_for_key($cid,'gradingqueue',
+				       &encode_queue_key($symb,$udom,$uname));
+    return %status;
+}
+
 sub start_ClosingParagraph {
     my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
     my $result;
@@ -1002,7 +1139,7 @@ sub get_instance {
 		    } elsif ($status eq 'pass') {
 			$result.='<font color="green">'.&mt('Passed').'</font>';
 		    } else {
-			&Apache::lonxml::error("Student viewing a graded bridgetask was show a status of $status");
+			&Apache::lonxml::error("Student viewing a graded bridgetask was shown a status of $status");
 		    }
 		    $result.='</td></tr><tr><td>';
 		    if ($Apache::lonhomework::history{"resource.$version.$dim.$instance.$id.comment"}) {