--- loncom/homework/grades.pm	2002/08/05 20:49:54	1.45
+++ loncom/homework/grades.pm	2002/08/06 20:46:30	1.46
@@ -1,7 +1,7 @@
 # The LearningOnline Network with CAPA
 # The LON-CAPA Grading handler
 #
-# $Id: grades.pm,v 1.45 2002/08/05 20:49:54 ng Exp $
+# $Id: grades.pm,v 1.46 2002/08/06 20:46:30 ng Exp $
 #
 # Copyright Michigan State University Board of Trustees
 #
@@ -45,17 +45,6 @@ use Apache::Constants qw(:common);
 
 # ----- These first few routines are general use routines.-----
 #
-
-sub print_hash {
-    my ($request, $hash) = @_;
-    $request->print('<table border=1><tr><td>Key</td><td>Value</td></tr>');
-    for (sort keys (%$hash)) {
-	$request->print('<tr><td>'.$_.'</td><td>'.$$hash{$_}.'&nbsp;</td></tr>');
-    }
-    $request->print('</table>');
-    return '';
-}
-
 # --- Retrieve the parts that matches stores_\d+ from the metadata file.---
 sub getpartlist {
     my ($url) = @_;
@@ -114,17 +103,6 @@ sub response_type {
     return \@partlist,\%handgrade;
 }
 
-#--- Prints a message on screen if a user did something wrong
-#--- Operator error ---
-sub userError {
-    my ($request, $reason, $step) = @_;
-    $request->print('<h3><font color="red">LON-CAPA User Error</font></h3><br />'."\n");
-    $request->print('<b>Reason: </b>'.$reason.'<br /><br />'."\n");
-    $request->print('<b>Step: </b>'.($step ne '' ? $step : 'Use your browser back button to correct')
-		    .'<br /><br />'."\n");
-    return '';
-}
-
 #--- Dumps the class list with usernames,list of sections,
 #--- section, ids and fullnames for each user.
 sub getclasslist {
@@ -323,19 +301,22 @@ sub listStudents {
 <script type="text/javascript" language="javascript">
   function checkSelect(checkBox) {
     var ctr=0;
+    var sense="";
     if (checkBox.length > 1) {
        for (var i=0; i<checkBox.length; i++) {
 	  if (checkBox[i].checked) {
 	     ctr++;
 	  }
        }
+       sense = "a student or group of students";
     } else {
        if (checkBox.checked) {
 	   ctr = 1;
        }
+       sense = "the student";
     }
     if (ctr == 0) {
-       alert("You did not select any student.");
+       alert("Please select "+sense+" before clicking on the View/Grade button.");
        return false;
     }
     document.gradesub.submit();
@@ -443,6 +424,8 @@ LISTJAVASCRIPT
 	$gradeTable='<br />&nbsp;<font color="red">'.
 	    'No submission found for this resource.</font><br />';
 	$gradeTable.=&show_grading_menu_form ($ENV{'form.symb'},$ENV{'form.url'});
+    } elsif ($ctr == 1) {
+	$gradeTable =~ s/type=checkbox/type=checkbox checked/;
     }
     $request->print($gradeTable);
     return '';
@@ -552,7 +535,7 @@ sub sub_page_js {
 		 var points = eval("document.SCORE.GD_BOX"+i+"_"+partid+".value");
 		 if (points == "") {
 		     var name = eval("document.SCORE.name"+i+".value");
-		     alert("You did not assign any point for "+name+", part "+partid+".");
+		     alert("Please assign a score for "+name+", part "+partid+".");
 		     return false;
 		 }
 	      }
@@ -594,7 +577,7 @@ sub sub_page_js {
     else return;
     var cleantxt = txt.replace(new RegExp('([\\f\\n\\r\\t\\v ])+', 'g')," ");
     if (cleantxt=="") {
-	alert("Select a word or group of words from document and then click this link.");
+	alert("Please select a word or group of words from document and then click this link.");
 	return;
     }
     var nret = prompt("Add selection to keyword list? Edit if desired.",cleantxt);
@@ -929,7 +912,6 @@ KEYWORDS
     my $result='<table border="0" width=100%><tr><td bgcolor="#777777">'."\n".
 	'<table border="0" width=100%><tr bgcolor="#edffff"><td>'."\n";
 
-#    $result.='<table border="0"><tr bgcolor="#ffffff"><td><b>Fullname: </b>'.$ENV{'form.fullname'}.
     $result.='<b>Fullname: </b>'.$ENV{'form.fullname'}.
 	'<font color="#999999">&nbsp; &nbsp;Username: '.$uname.'</font>'.
 	'<font color="#999999">&nbsp; &nbsp;Domain: '.$udom.'</font><br />'."\n";
@@ -1002,7 +984,7 @@ KEYWORDS
 	    $request->print($submitby);
 	} else {
 	    my ($string,$timestamp)=
-		&get_last_submission ($symb,$uname,$udom,$ENV{'request.course.id'});
+		&get_last_submission (%record);
 	    my $lastsubonly.=''.
 		($$timestamp eq '' ? '' : '<b>Date Submitted:</b> '.
 		 $$timestamp).'';
@@ -1153,31 +1135,30 @@ KEYWORDS
 
 #--- Retrieve the last submission for all the parts
 sub get_last_submission {
-    my ($symb,$username,$domain,$course)=@_;
-    if ($symb) {
-	my (@string,$timestamp);
-	my (%returnhash)=&Apache::lonnet::restore($symb,$course,$domain,$username);
-	if ($returnhash{'version'}) {
-	    my %lasthash=();
-	    my ($version);
-	    for ($version=1;$version<=$returnhash{'version'};$version++) {
-		foreach (sort(split(/\:/,$returnhash{$version.':keys'}))) {
-		    $lasthash{$_}=$returnhash{$version.':'.$_};
-		}
-	    }
-	    foreach ((keys %lasthash)) {
-		if ($_ =~ /\.submission$/) {
-		    my ($partid,$foo) = split(/submission$/,$_);
-		    my $draft  = $lasthash{$partid.'awarddetail'} eq 'DRAFT' ?
-			'<font color="red">Draft Copy</font> ' : '';
-		    push @string, (join(':',$_,$draft.$lasthash{$_}));
-		}
-		if ($_ =~ /timestamp/) {$timestamp = scalar(localtime($lasthash{$_}))};
+    my (%returnhash)=@_;
+    my (@string,$timestamp);
+    if ($returnhash{'version'}) {
+	my %lasthash=();
+	my ($version);
+	for ($version=1;$version<=$returnhash{'version'};$version++) {
+	    foreach (sort(split(/\:/,$returnhash{$version.':keys'}))) {
+		$lasthash{$_}=$returnhash{$version.':'.$_};
+		if ($returnhash{$version.':'.$_} =~ /(SUBMITTED|DRAFT)$/) {
+		   $timestamp = scalar(localtime($returnhash{$version.':timestamp'}));
+	       } 
+	    }
+	}
+	foreach ((keys %lasthash)) {
+	    if ($_ =~ /\.submission$/) {
+		my ($partid,$foo) = split(/submission$/,$_);
+		my $draft  = $lasthash{$partid.'awarddetail'} eq 'DRAFT' ?
+		    '<font color="red">Draft Copy</font> ' : '';
+		push @string, (join(':',$_,$draft.$lasthash{$_}));
 	    }
 	}
-	@string = $string[0] eq '' ? 'Nothing submitted - no attempts.' : @string;
-	return \@string,\$timestamp;
     }
+    @string = $string[0] eq '' ? 'Nothing submitted - no attempts.' : @string;
+    return \@string,\$timestamp;
 }
 
 #--- High light keywords, with style choosen by user.
@@ -2029,8 +2010,6 @@ sub csvuploadassign {
     }
     $request->print('<h3>Assigning Grades</h3>');
     my $courseid=$ENV{'request.course.id'};
-#  my $cdom=$ENV{"course.$courseid.domain"};
-#  my $cnum=$ENV{"course.$courseid.num"};
     my ($classlist) = &getclasslist('all','1');
     my @skipped;
     my $countdone=0;
@@ -2130,7 +2109,7 @@ sub view_edit_entire_class_form {
 	$result.= '<option>'.$_.'</option>'."\n";
     }
     $result.='<option selected="on">all</select>'."<br />\n";
-    $result.='&nbsp;<input type="submit" name="submit" value="View/Grade" /></form>'."\n";
+    $result.='&nbsp;<input type="button" onClick="submit();" value="View/Grade" /></form>'."\n";
     $result.='</td></tr></table>'."\n";
     $result.='</td></tr></table>'."\n";
     return $result;
@@ -2140,7 +2119,17 @@ sub view_edit_entire_class_form {
 sub upcsvScores_form {
     my ($symb,$url) = @_;
     if (!$symb) {return '';}
-    my $result.='<table width=100% border=0><tr><td bgcolor=#777777>'."\n";
+    my $result = '<script type="text/javascript" language="javascript">'."\n".
+	'  function checkUpload(formname) {'."\n".
+	'    if (formname.upfile.value == "") {'."\n".
+	'       alert("Please use the browse button to select a file from your local directory.");'."\n".
+	'       return false;'."\n".
+	'    }'."\n".
+	'    formname.submit();'."\n".
+	'  }'."\n".
+	'</script>'."\n";
+
+    $result.='<table width=100% border=0><tr><td bgcolor=#777777>'."\n";
     $result.='<table width=100% border=0><tr bgcolor="#e6ffff"><td>'."\n";
     $result.='&nbsp;<b>Specify a file containing the class scores for above resource</b></td></tr>'."\n";
     $result.='<tr bgcolor=#ffffe6><td>'."\n";
@@ -2151,7 +2140,7 @@ sub upcsvScores_form {
 <input type="hidden" name="url" value="$url" />
 <input type="hidden" name="command" value="csvuploadmap" />
 $upfile_select
-<br />&nbsp;<input type="submit" name="submit" value="Upload Grades" />
+<br />&nbsp;<input type="button" onClick="javascript:checkUpload(this.form);" value="Upload Grades" />
 </form>
 ENDUPFORM
     $result.='</td></tr></table>'."\n";
@@ -2185,8 +2174,8 @@ sub viewGradeaStu_form {
 	'<input type="radio" name="submitonly" value="all"> everybody <br />';
     $result.='&nbsp;(Section "no" implies the students were not assigned a section.)<br />' 
 	if (grep /no/,@$sections);
-    
-    $result.='<br />&nbsp;<input type="submit" name="submit" value="View/Grade" />'."\n".
+   
+    $result.='<br />&nbsp;<input type="button" onClick="submit();" value="View/Grade" />'."\n".
 	'</form>'."\n";
     $result.='</td></tr></table>'."\n";
     $result.='</td></tr></table>'."\n";
@@ -2196,17 +2185,27 @@ sub viewGradeaStu_form {
 #--- Form to input a receipt number ---
 sub verifyReceipt_form {
     my ($symb,$url) = @_;
-    my $cdom=$ENV{"course.$ENV{'request.course.id'}.domain"};
-    my $cnum=$ENV{"course.$ENV{'request.course.id'}.num"};
+    my $result = '<script type="text/javascript" language="javascript">'."\n".
+	'  function checkEntry(formname) {'."\n".
+	'    var receipt = formname.receipt.value;'."\n".
+	'    if (isNaN(receipt) || receipt == "") {'."\n".
+	'       alert("Please enter a receipt number given by a student in the box.");'."\n".
+	'       return false;'."\n".
+	'    }'."\n".
+	'    formname.submit();'."\n".
+	'  }'."\n".
+	'</script>'."\n";
+
     my $hostver=unpack("%32C*",$Apache::lonnet::perlvar{'lonHostID'});
 
-    my $result.='<table width=100% border=0><tr><td bgcolor=#777777>'."\n";
+    $result.='<table width=100% border=0><tr><td bgcolor=#777777>'."\n";
     $result.='<table width=100% border=0><tr><td bgcolor=#e6ffff>'."\n";
     $result.='&nbsp;<b>Verify a Submission Receipt Issued by this Server</td></tr>'."\n";
     $result.='<tr bgcolor=#ffffe6><td>'."\n";
-    $result.='<form action="/adm/grades" method="post">'."\n";
+    $result.='<form action="/adm/grades" method="post" name="verifyform">'."\n";
     $result.='&nbsp;<tt>'.$hostver.'-<input type="text" name="receipt" size="4"></tt><br />'."\n";
-    $result.='&nbsp;<input type="submit" name="submit" value="Verify Receipt">'."\n";
+    $result.='&nbsp;<input type="button" onClick="javascript:checkEntry(this.form);"'.
+	' value="Verify Receipt">'."\n";
     $result.='<input type="hidden" name="command" value="verify">'."\n";
     if ($ENV{'form.url'}) {
 	$result.='<input type="hidden" name="url" value="'.$ENV{'form.url'}.'" />';
@@ -2268,7 +2267,6 @@ sub handler {
 	    }
 	}
     } else {
-	#&Apache::lonhomework::showhashsubset(\%ENV,'^form');
 	$Apache::grades::viewgrades=&Apache::lonnet::allowed('vgr',$ENV{'request.course.id'});
 	if ($command eq 'submission') {
 	    &listStudents($request) if ($ENV{'form.student'} eq '');