--- loncom/homework/lonhomework.pm	2003/04/03 21:46:27	1.119
+++ loncom/homework/lonhomework.pm	2003/05/16 19:01:27	1.129
@@ -1,7 +1,7 @@
 # The LearningOnline Network with CAPA
 # The LON-CAPA Homework handler
 #
-# $Id: lonhomework.pm,v 1.119 2003/04/03 21:46:27 albertel Exp $
+# $Id: lonhomework.pm,v 1.129 2003/05/16 19:01:27 albertel Exp $
 #
 # Copyright Michigan State University Board of Trustees
 #
@@ -50,6 +50,7 @@ use Apache::essayresponse();
 use Apache::externalresponse();
 use Apache::rankresponse();
 use Apache::matchresponse();
+#use Apache::chemresponse();
 use Apache::Constants qw(:common);
 use HTML::Entities();
 use Apache::loncommon();
@@ -60,7 +61,8 @@ BEGIN {
 }
 
 sub get_target {
-  if ( $ENV{'request.state'} eq "published") {
+  if (($ENV{'request.state'} eq "published") ||
+      ($ENV{'request.state'} eq "uploaded")) {
     if ( defined($ENV{'form.grade_target'}  ) 
 	 && ($ENV{'form.grade_target'} eq 'tex')) {
       return ($ENV{'form.grade_target'});
@@ -207,12 +209,20 @@ sub check_access {
     $datemsg = "was due on $lastdate, and answers will be available on $date";
   }
   if ($status eq 'CAN_ANSWER') {
-    #check #tries
+    #check #tries, and if correct.
     my $tries = $Apache::lonhomework::history{"resource.$id.tries"};
     my $maxtries = &Apache::lonnet::EXT("resource.$id.maxtries");
     if ( $tries eq '' ) { $tries = '0'; }
     if ( $maxtries eq '' ) { $maxtries = '2'; } 
-    if ($tries >= $maxtries) { $status = 'CANNOT_ANSWER'; } 
+    if ($tries >= $maxtries) { $status = 'CANNOT_ANSWER'; }
+    # if (correct and show prob status) or excused then CANNOT_ANSWER
+    if(($Apache::lonhomework::history{"resource.$id.solved"}=~/^correct/
+	&&
+	lc($Apache::lonhomework::problemstatus) ne 'no')
+       ||
+       $Apache::lonhomework::history{"resource.$id.solved"}=~/^excused/) {
+	$status = 'CANNOT_ANSWER';
+    }
   }
 
   if (($status ne 'CLOSED') && ($Apache::lonhomework::type eq 'exam') &&
@@ -280,23 +290,31 @@ sub showhashsubset {
 
 sub setuppermissions {
   $Apache::lonhomework::browse= &Apache::lonnet::allowed('bre',$ENV{'request.filename'});
-  $Apache::lonhomework::viewgrades=&Apache::lonnet::allowed('vgr',$ENV{'request.course.id'});
+  my $viewgrades = &Apache::lonnet::allowed('vgr',$ENV{'request.course.id'});
+  if (! $viewgrades && 
+      exists($ENV{'request.course.sec'}) && 
+      $ENV{'request.course.sec'} !~ /^\s*$/) {
+      $viewgrades = &Apache::lonnet::allowed('vgr',$ENV{'request.course.id'}.
+                                               '/'.$ENV{'request.course.sec'});
+  }
+  $Apache::lonhomework::viewgrades = $viewgrades;
   return ''
 }
 
 sub setupheader {
-  my $request=$_[0];
-  if ($ENV{'browser.mathml'}) {
-    $request->content_type('text/xml');
-  } else {
-    $request->content_type('text/html');
-  }
-  if (!$Apache::lonxml::debug && ($ENV{'REQUEST_METHOD'} eq 'GET')) {
-    &Apache::loncommon::no_cache($request);
-  }
-  $request->send_http_header;
-  return OK if $request->header_only;
-  return ''
+    my $request=$_[0];
+    if ($ENV{'browser.mathml'}) {
+	$request->content_type('text/xml');
+    } else {
+	$request->content_type('text/html');
+    }
+    $request->content_encoding('UTF-8');
+    if (!$Apache::lonxml::debug && ($ENV{'REQUEST_METHOD'} eq 'GET')) {
+	&Apache::loncommon::no_cache($request);
+    }
+    $request->send_http_header;
+    return OK if $request->header_only;
+    return ''
 }
 
 sub handle_save_or_undo {
@@ -533,7 +551,7 @@ sub get_template_list {
   }
   if (@allnames && !$result) {
     $result="<option>Select a $extension template</option>\n<option>".
-      join('</option><option>',sort(@allnames)).'</option>';
+	join('</option><option>',sort(@allnames)).'</option>';
   }
   return $result;
 }
@@ -544,33 +562,29 @@ sub newproblem {
     $extension=~s:^.*\.([\w]+)$:$1:;
     &Apache::lonxml::debug("Looking for :$extension:");
     if ($ENV{'form.template'} &&
-	$ENV{'form.template'} ne "Select a $extension type") {
+	$ENV{'form.template'} ne "Select a $extension template") {
 	use File::Copy;
 	my $file = &get_template_list($ENV{'form.template'},$extension);
 	my $dest = &Apache::lonnet::filelocation("",$request->uri);
 	copy($file,$dest);
 	&renderpage($request,$dest);
-    } elsif($ENV{'form.newfile'}) {
-	# I don't like hard-coded filenames but for now, this will work.
-	use File::Copy;
-	my $templatefilename = 
-	    $request->dir_config('lonIncludes').'/templates/blank.problem';
-	&Apache::lonxml::debug("$templatefilename");
-	my $dest = &Apache::lonnet::filelocation("",$request->uri);
-	copy($templatefilename,$dest);
-	&renderpage($request,$dest);
     } else {
 	my $templatelist=&get_template_list('',$extension);
 	my $url=$request->uri;
 	my $dest = &Apache::lonnet::filelocation("",$request->uri);
+	my $errormsg;
+	if ($ENV{'form.newfile'}) {
+	    $errormsg='<p><font color="red">You did not select a template.</font></p>'."\n";
+	}
 	my $instructions;
 	if ($templatelist) { $instructions=", select a template from the pull-down menu below.<br />Then";}
 	$request->print(<<ENDNEWPROBLEM);
 <body bgcolor="#FFFFFF">
 <h1>Creating a new $extension resource</h1>
+$errormsg
 The requested file <tt>$url</tt> currently does not exist.
 <p>
-To create a new $extension$instructions click on the "Create $extension" button.
+<b>To create a new $extension$instructions click on the "Create $extension" button.</b>
 </p>
 <p><form action="$url" method="POST">
 ENDNEWPROBLEM