--- loncom/homework/inputtags.pm	2005/12/01 18:46:31	1.185
+++ loncom/homework/inputtags.pm	2006/02/21 22:41:29	1.187
@@ -1,7 +1,7 @@
 # The LearningOnline Network with CAPA
 # input  definitons
 #
-# $Id: inputtags.pm,v 1.185 2005/12/01 18:46:31 albertel Exp $
+# $Id: inputtags.pm,v 1.187 2006/02/21 22:41:29 albertel Exp $
 #
 # Copyright Michigan State University Board of Trustees
 #
@@ -363,15 +363,22 @@ sub file_selector {
 	    '<input type="text" size="50" name="HWPORT'.$jspart.'_'.$id.'" value="" />'.
 	    '<br />';
 	if ($Apache::lonhomework::history{"resource.$part.$id.portfiles"}=~/[^\s]/){
-	    my @filelist;
+	    my (@filelist,@bad_file_list);
 	    foreach my $file (split(',',&Apache::lonnet::unescape($Apache::lonhomework::history{"resource.$part.$id.portfiles"}))) {
 		my (undef,undef,$domain,$user)=&Apache::lonxml::whichuser();
 		my $url="/uploaded/$domain/$user/portfolio$file";
 		my $icon=&Apache::loncommon::icon($url);
 		push(@filelist,'<a href="'.$url.'"><img src="'.$icon.
 		     '" border="0" />'.$file.'</a>');
+		if (! &Apache::lonnet::stat_file($url)) {
+		    push(@bad_file_list,'<a href="'.$url.'"><img src="'.$icon.
+			 '" border="0" />'.$file.'</a>');
+		}
 	    }
 	    $result.=&mt("Portfolio files previously selected: <strong>[_1]</strong>",join(', ',@filelist));
+	    if (@bad_file_list) {
+		$result.='<br />'.&mt('<font color="red">These file(s) don\'t exist:</font> <strong>[_1]</strong>',join(', ',@bad_file_list));
+	    }
 	}
     }
     $result.='</td></tr>'; 
@@ -622,7 +629,12 @@ sub decideoutput {
 	$bgcolor=$possiblecolors{'correct'};
 	$button=0;
     } elsif ($award eq '') {
-	$bgcolor=$possiblecolors{'not_charged_try'};
+	if ($handgrade && $Apache::inputtags::status[-1] eq 'SHOW_ANSWER') {
+	    $message = &mt("Nothing submitted.");
+	    $bgcolor=$possiblecolors{'charged_try'};
+	} else {
+	    $bgcolor=$possiblecolors{'not_charged_try'};
+	}
 	$button=1;
     } else {
 	$message = &mt("Unknown message").": $award";