--- loncom/homework/inputtags.pm	2002/12/05 22:59:37	1.77
+++ loncom/homework/inputtags.pm	2003/04/02 19:51:24	1.86
@@ -1,7 +1,7 @@
 # The LearningOnline Network with CAPA
 # input  definitons
 #
-# $Id: inputtags.pm,v 1.77 2002/12/05 22:59:37 albertel Exp $
+# $Id: inputtags.pm,v 1.86 2003/04/02 19:51:24 sakharuk Exp $
 #
 # Copyright Michigan State University Board of Trustees
 #
@@ -30,6 +30,7 @@
 package Apache::inputtags;
 use HTML::Entities();
 use strict;
+use Apache::loncommon;
 
 BEGIN {
   &Apache::lonxml::register('Apache::inputtags',('textfield','textline'));
@@ -92,17 +93,17 @@ sub start_textfield {
 	    "rows=\"$rows\" cols=\"$cols\">".$oldresponse;
 	if ($oldresponse ne '') {
 	    #get rid of any startup text if the user has already responded
-	    &Apache::lonxml::get_all_text("/textfield",$$parser[-1]);
+	    &Apache::lonxml::get_all_text("/textfield",$parser);
 	}
     } else {
 	#right or wrong don't show it
 	#$result='<table border="1"><tr><td><i>'.$oldresponse.'</i></td></tr></table>';
 	$result='';
 	#get rid of any startup text
-	&Apache::lonxml::get_all_text("/textfield",$$parser[-1]);
+	&Apache::lonxml::get_all_text("/textfield",$parser);
     }
   } elsif ($target eq 'grade') {
-    my $seedtext=&Apache::lonxml::get_all_text("/textfield",$$parser[-1]);
+    my $seedtext=&Apache::lonxml::get_all_text("/textfield",$parser);
     if ($seedtext eq $ENV{'form.HWVAL'.$resid}) {
       # if the seed text is still there it wasn't a real submission
       $ENV{'form.HWVAL'.$resid}='';
@@ -111,7 +112,7 @@ sub start_textfield {
     $result.=&Apache::edit::tag_start($target,$token);
     $result.=&Apache::edit::text_arg('Rows:','rows',$token,4);
     $result.=&Apache::edit::text_arg('Columns:','cols',$token,4);
-    my $bodytext=&Apache::lonxml::get_all_text("/textfield",$$parser[-1]);
+    my $bodytext=&Apache::lonxml::get_all_text("/textfield",$parser);
     $result.=&Apache::edit::editfield($token->[1],$bodytext,'Text you want to appear by default:',80,2);
   } elsif ($target eq 'modified') {
     my $constructtag=&Apache::edit::get_new_args($token,$parstack,
@@ -122,6 +123,13 @@ sub start_textfield {
       $result=$token->[4];
     }
     $result.=&Apache::edit::modifiedfield();
+  } elsif ($target eq 'tex') {
+      if ($$tagstack[-2] eq 'essayresponse' and $Apache::lonhomework::type eq 'exam') {
+	  my $number_of_lines= &Apache::lonxml::get_param('rows',$parstack,$safeeval);
+	  $result = '\fbox{\fbox{\parbox{\textwidth-5mm}{';
+	for (my $i=0;$i<int $number_of_lines*2;$i++) {$result.='\strut \\\\ ';}
+	$result.='\strut \\\\\strut \\\\\strut \\\\\strut \\\\}}}';
+      }
   }
   return $result;
 }
@@ -171,7 +179,7 @@ sub start_textline {
   } elsif ($target eq 'modified') {
     my $constructtag=&Apache::edit::get_new_args($token,$parstack,$safeeval,'size');
     if ($constructtag) { $result = &Apache::edit::rebuild_tag($token); }
-  } elsif ($target eq 'tex') {
+  } elsif ($target eq 'tex' and $Apache::lonhomework::type ne 'exam') {
       my $size = &Apache::lonxml::get_param('size',$parstack,$safeeval);
       if ($size != 0) {$size=$size*2; $size.=' mm';} else {$size='40 mm';}
       $result='\framebox['.$size.'][s]{\tiny\strut}';
@@ -232,6 +240,12 @@ sub finalizeawards {
     foreach $award (@_) { if ($award eq 'INCORRECT') {$result=$award; last;} }
   }
   if ($result eq '' ) {
+      foreach $award (@_) { if ($award eq 'MISORDERED_RANK') {$result=$award; last;} }
+  }
+  if ($result eq '' ) {
+      foreach $award (@_) { if ($award eq 'INVALID_FILETYPE') {$result=$award; last;} }
+  }
+  if ($result eq '' ) {
     foreach $award (@_) { if ($award eq 'DRAFT') {$result=$award; last;} }
   }
   if ($result eq '' ) {
@@ -285,17 +299,26 @@ sub decideoutput {
   } elsif ($award eq 'WANTED_NUMERIC') {
     $message = "This question expects a numeric answer";
     $button=1;
+  } elsif ($award eq 'MISORDERED_RANK') {
+    $message = 'You have provided an invalid ranking, please refer to '.
+     &Apache::loncommon::help_open_topic('Ranking_Problems','help on ranking problems').'.';
+    $button=1;
+  } elsif ($award eq 'INVALID_FILETYPE') {
+    $message = 'The filetype extension of the file you uploaded is not allowed.';
+    $button=1;
   } elsif ($award eq 'SIG_FAIL') {
     $message = "Please adjust significant figures.";# you provided %s significant figures";
     $button=1;
   } elsif ($award eq 'UNIT_FAIL') {
-    $message = "Units incorrect."; #Computer reads units as %s";
+    $message = "Units incorrect. ".
+       &Apache::loncommon::help_open_topic('Physical_Units'); #Computer reads units as %s";
     $button=1;
   } elsif ($award eq 'UNIT_NOTNEEDED') {
     $message = "Only a number required.";# Computer reads units of %s";
     $button=1;
   } elsif ($award eq 'NO_UNIT') {
-    $message = "Units required";
+    $message = "Units required".
+       &Apache::loncommon::help_open_topic('Physical_Units');
     $button=1;
   } elsif ($award eq 'BAD_FORMULA') {
     $message = "Unable to understand formula";
@@ -313,6 +336,7 @@ sub decideoutput {
     $message = "Unknown message: $award";
     $button=1;
   }
+  if ($Apache::lonhomework::type eq 'exam') {$message='';$previousmsg='';}
   return ($button,$message,$previousmsg);
 }
 
@@ -365,7 +389,7 @@ sub setgradedata {
       foreach my $key (keys(%Apache::lonhomework::results)) {
 	if (($key =~ /^resource\.$id\./) && ($key !~ /\.collaborators$/)) {
 	  &Apache::lonxml::debug("Removing $key");
-  delete($Apache::lonhomework::results{$key});
+	  delete($Apache::lonhomework::results{$key});
 	}
       }
       #and since they didn't do anything we were never here
@@ -373,6 +397,17 @@ sub setgradedata {
     } else {
       $Apache::lonhomework::results{"resource.$id.previous"} = '0';
     }
+  } elsif ( $Apache::lonhomework::history{"resource.$id.solved"} =~
+	    /^correct/ ) {
+      #delete all data as they student already has it correct
+      foreach my $key (keys(%Apache::lonhomework::results)) {
+	  if (($key =~ /^resource\.$id\./) && ($key !~ /\.collaborators$/)) {
+	      &Apache::lonxml::debug("Removing $key");
+	      delete($Apache::lonhomework::results{$key});
+	  }
+      }
+      #and since they didn't do anything we were never here
+      return '';
   }
   $Apache::lonhomework::results{"resource.$id.award"} = $award;
 }
@@ -455,6 +490,8 @@ sub gradestatus {
       if ($target eq 'tex') {
 	  if ($ENV{'request.state'} ne "construct") {
 	      $trystr = ' {\small \textit{Tries} '.$tries.'/'.$maxtries.'} \vskip 0 mm ';
+	  } else {
+	      $trystr = '\vskip 0 mm ';
 	  }
       } else {
          $trystr = "<td>Tries $tries/$maxtries</td>";