--- loncom/homework/grades.pm	2002/10/16 19:23:48	1.56
+++ loncom/homework/grades.pm	2002/12/10 02:46:23	1.65
@@ -1,7 +1,7 @@
 # The LearningOnline Network with CAPA
 # The LON-CAPA Grading handler
 #
-# $Id: grades.pm,v 1.56 2002/10/16 19:23:48 matthew Exp $
+# $Id: grades.pm,v 1.65 2002/12/10 02:46:23 albertel Exp $
 #
 # Copyright Michigan State University Board of Trustees
 #
@@ -339,8 +339,9 @@ LISTJAVASCRIPT
     my $checklastsub = $ENV{'form.handgrade'} eq 'yes' ? '' : 'checked';
 
     my $gradeTable='<form action="/adm/grades" method="post" name="gradesub">'."\n".
-	'&nbsp;<b>View Problem: </b><input type="radio" name="vProb" value="no" checked> no '."\n".
-	'<input type="radio" name="vProb" value="yes"> yes <br />'."\n".
+	'&nbsp;<b>View Problem: </b><input type="radio" name="vProb" value="no" /> no '."\n".
+	'<input type="radio" name="vProb" value="yes" checked /> one student '."\n".
+	'<input type="radio" name="vProb" value="all" /> all students <br />'."\n".
 	'&nbsp;<b>Submissions: </b>'."\n";
     if ($ENV{'form.handgrade'} eq 'yes') {
 	$gradeTable.='<input type="radio" name="lastSub" value="hdgrade" '.$checkhdgrade.' /> handgrade only'."\n";
@@ -671,21 +672,21 @@ sub sub_page_js {
     pWin.document.write("<tr bgcolor=\\"#ffffdd\\">");
     pWin.document.write("<td>Subject</td>");
     pWin.document.write("<td align=\\"center\\"><input name=\\"subchk\\" type=\\"checkbox\\"" +shwsel+"></td>");
-    pWin.document.write("<td><input name=\\"msgsub\\" type=\\"text\\" value=\\""+msg+" \\"size=\\"60\\" maxlength=\\"80\\"></td></tr>");
+    pWin.document.write("<td><input name=\\"msgsub\\" type=\\"text\\" value=\\""+msg+"\\"size=\\"60\\" maxlength=\\"80\\"></td></tr>");
 }
 
 function displaySavedMsg(ctr,msg,shwsel) {
     pWin.document.write("<tr bgcolor=\\"#ffffdd\\">");
     pWin.document.write("<td align=\\"center\\">"+ctr+"</td>");
     pWin.document.write("<td align=\\"center\\"><input name=\\"msgn"+ctr+"\\" type=\\"checkbox\\"" +shwsel+"></td>");
-    pWin.document.write("<td><input name=\\"msg"+ctr+"\\" type=\\"text\\" value=\\""+msg+" \\" size=\\"60\\" maxlength=\\"80\\"></td></tr>");
+    pWin.document.write("<td><input name=\\"msg"+ctr+"\\" type=\\"text\\" value=\\""+msg+"\\" size=\\"60\\" maxlength=\\"80\\"></td></tr>");
 }
 
   function newMsg(newmsg,shwsel) {
     pWin.document.write("<tr bgcolor=\\"#ffffdd\\">");
     pWin.document.write("<td align=\\"center\\">New</td>");
     pWin.document.write("<td align=\\"center\\"><input name=\\"newmsgchk\\" type=\\"checkbox\\"" +shwsel+"></td>");
-    pWin.document.write("<td><input name=\\"newmsg\\" type=\\"text\\" onchange=\\"javascript:this.form.newmsgchk.checked=true\\" value=\\""+newmsg+" \\" size=\\"60\\" maxlength=\\"80\\"></td></tr>");
+    pWin.document.write("<td><input name=\\"newmsg\\" type=\\"text\\" onchange=\\"javascript:this.form.newmsgchk.checked=true\\" value=\\""+newmsg+"\\" size=\\"60\\" maxlength=\\"80\\"></td></tr>");
 }
 
   function msgTail() {
@@ -795,6 +796,32 @@ SUBJAVASCRIPT
 }
 
 
+sub show_problem {
+    my ($request,$symb,$uname,$udom,$removeform) = @_;
+    my $rendered=&Apache::loncommon::get_student_view($symb,$uname,$udom,
+						      $ENV{'request.course.id'});
+    if ($removeform) {
+	$rendered=~s|<form(.*?)>||g;
+	$rendered=~s|</form>||g;
+	$rendered=~s|name="submit"|name="would_have_been_submit"|g;
+    }
+    my $companswer=&Apache::loncommon::get_student_answers($symb,$uname,$udom,
+							   $ENV{'request.course.id'});
+    if ($removeform) {
+	$companswer=~s|<form(.*?)>||g;
+	$companswer=~s|</form>||g;
+	$rendered=~s|name="submit"|name="would_have_been_submit"|g;
+    }
+    my $result.='<table border="0" width="100%"><tr><td bgcolor="#777777">';
+    $result.='<table border="0" width="100%"><tr><td bgcolor="#e6ffff">';
+    $result.='<b> View of the problem - '.$ENV{'form.fullname'}.
+	'</b></td></tr><tr><td bgcolor="#ffffff">'.$rendered.'<br />';
+    $result.='<b>Correct answer:</b><br />'.$companswer;
+    $result.='</td></tr></table>';
+    $result.='</td></tr></table><br />';
+    $request->print($result);
+}
+
 # --------------------------- show submissions of a student, option to grade 
 sub submission {
     my ($request,$counter,$total) = @_;
@@ -809,7 +836,7 @@ sub submission {
     my $symb=($ENV{'form.symb'} ne '' ? $ENV{'form.symb'} : (&Apache::lonnet::symbread($url)));
     if ($symb eq '') { $request->print("Unable to handle ambiguous references:$url:."); return ''; }
     my $last = ($ENV{'form.lastSub'} eq 'last' ? 'last' : '');
-    $ENV{'form.vProb'} = $ENV{'form.vProb'} ne '' ? $ENV{'form.vProb'} : 'yes';
+#    $ENV{'form.vProb'} = $ENV{'form.vProb'} ne '' ? $ENV{'form.vProb'} : 'yes';
 
     # header info
     if ($counter == 0) {
@@ -820,18 +847,7 @@ sub submission {
 	# option to display problem, only once else it cause problems 
         # with the form later since the problem has a form.
 	if ($ENV{'form.vProb'} eq 'yes') {
-	    my $rendered=&Apache::loncommon::get_student_view($symb,$uname,$udom,
-							      $ENV{'request.course.id'});
-	    my $companswer=&Apache::loncommon::get_student_answers($symb,$uname,$udom,
-								   $ENV{'request.course.id'});
-	    my $result.='<table border="0" width="100%"><tr><td bgcolor="#777777">';
-	    $result.='<table border="0" width="100%"><tr><td bgcolor="#e6ffff">';
-	    $result.='<b> View of the problem - '.$ENV{'form.fullname'}.
-		'</b></td></tr><tr><td bgcolor="#ffffff">'.$rendered.'<br />';
-	    $result.='<b>Correct answer:</b><br />'.$companswer;
-	    $result.='</td></tr></table>';
-	    $result.='</td></tr></table><br />';
-	    $request->print($result);
+	    &show_problem($request,$symb,$uname,$udom,0);
 	}
 	
 	# kwclr is the only variable that is guaranteed to be non blank 
@@ -894,6 +910,11 @@ KEYWORDS
         }
     }
 
+    if ($ENV{'form.vProb'} eq 'all') {
+	$request->print('<br /><br /><br />');
+	&show_problem($request,$symb,$uname,$udom,1);
+    }
+
     my %record = &Apache::lonnet::restore($symb,$ENV{'request.course.id'},$udom,$uname);
     my ($partlist,$handgrade) = &response_type($url);
 
@@ -916,44 +937,55 @@ KEYWORDS
 	($classlist,undef,$fullname) = &getclasslist('all','0');
 	for (keys (%$handgrade)) {
 	    my $ncol = &Apache::lonnet::EXT('resource.'.$_.
-					    '.maxcollaborators',$symb,$udom,$uname);
-	    if ($ncol > 0) {
-		s/\_/\./g;
-		if ($record{'resource.'.$_.'.collaborators'} ne '') {
-		    my (@collaborators) = split(/,?\s+/,
-						$record{'resource.'.$_.'.collaborators'});
-		    my (@badcollaborators);
-		    if (scalar(@collaborators) != 0) {
-			$result.='<b>Collaborators: </b>';
-			foreach my $collaborator (@collaborators) {
-			    $collaborator = $collaborator =~ /\@|:/ ? 
-				(split(/@|:/,$collaborator))[0] : $collaborator;
-			    next if ($collaborator eq $uname);
-			    if (!grep /^$collaborator:/i,keys %$classlist) {
-				push @badcollaborators,$collaborator;
-				next;
-			    }
-			    push @col_list, $collaborator;
-			    my ($lastname,$givenn) = split(/,/,$$fullname{$collaborator.':'.$udom});
-			    push @col_fullnames, $givenn.' '.$lastname;
-			    $result.=$$fullname{$collaborator.':'.$udom}.'&nbsp; &nbsp; &nbsp;';
-			}
-			$result.='<br />'."\n";
-			$result.='<table border="0"><tr bgcolor="#ffbbbb"><td>'.
-			    'This student has submitted '.
-			    (scalar (@badcollaborators) > 1 ? '' : 'an').
-			    ' invalid collaborator'.(scalar (@badcollaborators) > 1 ? 's. ' : '. ').
-			    (join ', ',@badcollaborators).'</td></tr></table>' 
-			    if (scalar(@badcollaborators) > 0);
-
-			$result.='<table border="0"><tr bgcolor="#ffbbbb"><td>'.
-			    'This student has submitted too many collaborators. Maximum is '.
-			    $ncol.'.</td></tr></table>' if (scalar(@collaborators) > $ncol);
-			$result.='<input type="hidden" name="collaborator'.$counter.
-			    '" value="'.(join ':',@col_list).'" />'."\n";
-		    }
-		}
-	    }
+					    '.maxcollaborators',
+                                            $symb,$udom,$uname);
+	    next if ($ncol <= 0);
+            s/\_/\./g;
+            next if ($record{'resource.'.$_.'.collaborators'} eq '');
+            my (@collaborators) = split(/,?\s+/,
+                                   $record{'resource.'.$_.'.collaborators'});
+            my (@badcollaborators);
+            if (scalar(@collaborators) != 0) {
+                $result.='<b>Collaborators: </b>';
+                foreach my $collaborator (@collaborators) {
+                    my ($co_name,$co_dom) = split /\@|:/,$collaborator;
+                    $co_dom = $udom if (! defined($co_dom));
+                    next if ($co_name eq $uname && $co_dom eq $udom);
+                    # Doing this grep allows 'fuzzy' specification
+                    my @Matches = grep /^$co_name:$co_dom/i,
+                    keys %$classlist;
+                    if (! scalar(@Matches)) {
+                        push @badcollaborators,$collaborator;
+                        next;
+                    }
+                    push @col_list, @Matches;
+                    foreach (@Matches) {
+                        my ($lastname,$givenn) = split(/,/,$$fullname{$_});
+                        push @col_fullnames, $givenn.' '.$lastname;
+                        $result.=$$fullname{$_}.'&nbsp; &nbsp; &nbsp;';
+                    }
+                }
+                $result.='<br />'."\n";
+                if (scalar(@badcollaborators) > 0) {
+                    $result.='<table border="0"><tr bgcolor="#ffbbbb"><td>';
+                    $result.='This student has submitted ';
+                    if (scalar(@badcollaborators) == 1) {
+                        $result .= 'an invalid collaborator';
+                    } else {
+                        $result .= 'invalid collaborators';
+                    }
+                    $result .= ': '.join(', ',@badcollaborators);
+                    
+                }
+                if (scalar(@collaborators > $ncol)) {
+                    $result .= '<table border="0"><tr bgcolor="#ffbbbb"><td>';
+                    $result .= 'This student has sumbitted too many '.
+                        'collaborators.  Maximum is '.$ncol;
+                    $result .= '</td></tr></table>';
+                }
+                $result.='<input type="hidden" name="collaborator'.$counter.
+                    '" value="'.(join ':',@col_list).'" />'."\n";
+            }
 	}
     }
     $request->print($result."\n");
@@ -1077,9 +1109,15 @@ KEYWORDS
 	    'onChange="javascript:clearRadBox(this.form.RADVAL'.$counter.'_'.$partid.
 	    ',this.form.GD_BOX'.$counter.'_'.$partid.
 	    ',this.form.GD_SEL'.$counter.'_'.$partid.
-	    ',this.form.stores'.$counter.'_'.$partid.')" />'."\n".
-	    '<option selected="on"> </option>'.
-	    '<option>excused</option></select>'."&nbsp&nbsp\n";
+	    ',this.form.stores'.$counter.'_'.$partid.')" >'."\n";
+	if ($record{'resource.'.$partid.'.solved'} eq 'excused') {
+	    $result.='<option> </option>'.
+		'<option selected="on">excused</option></select>';
+	} else {
+	    $result.='<option selected="on"> </option>'.
+		'<option>excused</option></select>';
+	}
+	$result.="&nbsp&nbsp\n";
 	$result.='<input type="hidden" name="stores'.$counter.'_'.$partid.'" value="0" />';
 	$result.='</td></tr></table>'."\n";
 	$request->print($result);
@@ -1135,9 +1173,9 @@ sub get_last_submission {
 	for ($version=1;$version<=$returnhash{'version'};$version++) {
 	    foreach (sort(split(/\:/,$returnhash{$version.':keys'}))) {
 		$lasthash{$_}=$returnhash{$version.':'.$_};
-		if ($returnhash{$version.':'.$_} =~ /(SUBMITTED|DRAFT)$/) {
+#		if ($returnhash{$version.':'.$_} =~ /(SUBMITTED|DRAFT)$/) {
 		   $timestamp = scalar(localtime($returnhash{$version.':timestamp'}));
-	       } 
+#	       } 
 	    }
 	}
 	foreach ((keys %lasthash)) {
@@ -1161,8 +1199,13 @@ sub keywords_highlight {
     (my $styleoff = $styleon) =~ s/\</\<\//;
     my @keylist   = split(/[,\s+]/,$ENV{'form.keywords'});
     foreach (@keylist) {
-	$string =~ s/\b$_(\b|\.)/\<font color\=$ENV{'form.kwclr'} $size\>$styleon$_$styleoff\<\/font\>/gi;
+	$string =~ s/\b\Q$_\E(\b|\.)/\<font color\=$ENV{'form.kwclr'} $size\>$styleon$_$styleoff\<\/font\>/gi;
     }
+    # This is not really the right place to do this, but I cannot find a
+    # better one at this time.  So here we go - the m in the s:::mg causes
+    # ^ to match the beginning of a new line.  So we replace(???) the beginning
+    # of the line with <br /> to make things formatted a little better.
+    $string =~ s:^:<br />:mg;
     return $string;
 }
 
@@ -1183,7 +1226,7 @@ sub processHandGrade {
 
 	    my $includemsg = $ENV{'form.includemsg'.$ctr};
 	    my ($subject,$message,$msgstatus) = ('','','');
-	    if ($includemsg =~ /savemsg|new$ctr/) {
+	    if ($includemsg =~ /savemsg|newmsg\Q$ctr\E/) {
 		$subject = $ENV{'form.msgsub'} if ($includemsg =~ /^msgsub/);
 		my (@msgnum) = split(/,/,$includemsg);
 		foreach (@msgnum) {
@@ -1333,8 +1376,12 @@ sub saveHandGrade {
     my %newrecord;
     foreach (split(/:/,$ENV{'form.partlist'.$newflg})) {
 	if ($ENV{'form.GD_SEL'.$newflg.'_'.$_} eq 'excused') {
-	    $newrecord{'resource.'.$_.'.solved'} = 'excused' 
-		if ($record{'resource.'.$_.'.solved'} ne 'excused');
+	    if ($record{'resource.'.$_.'.solved'} ne 'excused') {
+		$newrecord{'resource.'.$_.'.solved'} = 'excused';
+		if (exists($record{'resource.'.$_.'.awarded'})) {
+		    $newrecord{'resource.'.$_.'.awarded'} = '';
+		}
+	    }
 	} else {
 	    my $pts = ($ENV{'form.GD_BOX'.$newflg.'_'.$_} ne '' ? 
 		       $ENV{'form.GD_BOX'.$newflg.'_'.$_} : 
@@ -1610,7 +1657,7 @@ sub viewgrades {
 	    $weight{$partid}.' (problem weight)</td>'."\n";
 	$result.= '</td><td><select name="SELVAL_'.$partid.'"'.
 	    'onChange="javascript:writeRadText(\''.$partid.'\','.
-		$weight{$partid}.')" /> '.
+		$weight{$partid}.')"> '.
 	    '<option selected="on"> </option>'.
 	    '<option>excused</option></select></td></tr>'."\n";
 	$ctsparts++;
@@ -1678,8 +1725,8 @@ sub viewstudentgrade {
 	'<a href="javascript:viewOneStudent(\''.$uname.'\',\''.$udom.
 	'\')"; TARGET=_self>'.$fullname.'</a>'.
 	'</td><td>'.$uname.'</td><td align="middle">'.$udom.'</td>'."\n";
-    foreach my $part (@$parts) {
-	my ($part,$type) = &split_part_type($part);
+    foreach my $apart (@$parts) {
+	my ($part,$type) = &split_part_type($apart);
 	my $score=$record{"resource.$part.$type"};
 	if ($type eq 'awarded') {
 	    my $pts = $score eq '' ? '' : $score*$$weight{$part};