--- loncom/homework/inputtags.pm	2001/02/19 21:02:59	1.28
+++ loncom/homework/inputtags.pm	2001/08/06 18:00:34	1.42
@@ -1,285 +1,400 @@
-# The LearningOnline Network with CAPA
-# input  definitons
-# 2/19 Guy 
+# The LON-CAPA input tags
+#
+# Input definitions.
+#
+# YEAR=2000
+# 7/25,9/11,9/19,10/2,10/11,11/21,11/28,12/1,12/4,12/8,12/11 Guy Albertelli
+# 12/12 Guy Albertelli
+# 12/12 Gerd Kortemeyer
+# 12/12,12/15,12/21 Guy Albertelli
+# YEAR=2001
+# 1/4,1/5,1/6,1/10,1/15,1/24,2/19 Guy Albertelli
+# 8/6 Scott Harrison
 
 package Apache::inputtags;
 use strict;
 
+# ======================================================================= BEGIN
 sub BEGIN {
-  &Apache::lonxml::register('Apache::inputtags',('textarea','textline','datasubmission'));
+    &Apache::lonxml::register('Apache::inputtags',
+			      ('textarea','textline','datasubmission'));
 }
 
-
+# ======================================================= Initialize input tags
 sub initialize_inputtags {
-  @Apache::inputtags::input=();
-  @Apache::inputtags::inputlist=();
-  @Apache::inputtags::response=();
-  @Apache::inputtags::responselist=();
-  @Apache::inputtags::answergroup=();
-  $Apache::inputtags::part='';
-  @Apache::inputtags::status=();
-  %Apache::inputtags::params=();
+    # list of current input ids
+    @Apache::inputtags::input = ();
+    # list of all input ids seen in this problem
+    @Apache::inputtags::inputlist = ();
+    # list of all current response ids
+    @Apache::inputtags::response = ();
+    # list of all response ids seen in this problem
+    @Apache::inputtags::responselist = ();
+    # list of whether or not a specific response was previously used
+    @Apache::inputtags::previous = ();
+    # id of current part, 0 means no part is current (inside <problem> only
+    $Apache::inputtags::part = '';
+    # list of problem date statuses, the first element is for <problem> 
+    #if there is a second element it is for the current <part>
+    @Apache::inputtags::status = ();
+    #hash of defined params for the current response
+    %Apache::inputtags::params = ();
 }
 
+# ========================================== Start input (return scalar string)
 sub start_input {
-  my ($parstack,$safeeval)=@_;
-  my $args ='';
-  if ( $#$parstack > -1 ) { $args=$$parstack[$#$parstack]; }
-  my $id = &Apache::run::run("{$args;".'return $id}',$safeeval);
-  push (@Apache::inputtags::input,$id);
-  push (@Apache::inputtags::inputlist,$id);
-  return $id;
+    my ($parstack,$safeeval) = @_;
+    my $id = &Apache::lonxml::get_param('id',$parstack,$safeeval);
+    if ($id eq '') { $id = $Apache::lonxml::curdepth; }
+    push (@Apache::inputtags::input,$id);
+    push (@Apache::inputtags::inputlist,$id);
+    return $id;
 }
 
+# =================================================================== End input
 sub end_input {
-  pop @Apache::inputtags::input;
-  return '';
+    pop @Apache::inputtags::input;
+    return '';
 }
 
+# ====================================== Start text area (return scalar string)
 sub start_textarea {
-  my ($target,$token,$parstack,$parser,$safeeval)=@_;
-  my $result = "";
-  my $id = &start_input($parstack,$safeeval);
-  if ($target eq 'web') {
-    $result= '<textarea name="HWVAL'.$id.'" value="">';
-  }
-  return $result;
+    my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
+    my $result = "";
+    my $id = &start_input($parstack,$safeeval);
+    if ($target eq 'web') {
+	my $oldresponse = $Apache::lonhomework::history{'resource.'.
+			  $Apache::inputtags::part.'.'.
+			  $Apache::inputtags::response['-1'].'.submission'};
+	my $cols = &Apache::lonxml::get_param('cols',$parstack,$safeeval);
+	if ( $cols eq '') { $cols = 80; }
+	my $rows = &Apache::lonxml::get_param('rows',$parstack,$safeeval);
+	if ( $rows eq '') { $rows = 10; }
+	$result= '<textarea name="HWVAL'.$Apache::inputtags::response['-1'].
+	    '" '."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("/textarea",$$parser[$#$parser]);
+	}
+    }
+    return $result;
 }
 
+# ======================================== End text area (return scalar string)
 sub end_textarea {
-  my ($target,$token,$parstack,$parser,$safeeval)=@_;
-  if ($target eq 'web') {
-    return "</textarea>";
-  } 
-  &end_input;
-  return '';
+    my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
+    if ($target eq 'web') {
+	return "</textarea>";
+    } 
+    &end_input;
+    return '';
 }
 
+# ====================================== Start text line (return scalar string)
 sub start_textline {
-  my ($target,$token,$parstack,$parser,$safeeval)=@_;
-  my $result = "";
-  if ($target eq 'web') {
-    my $args ='';
-    if ( $#$parstack > -1 ) { $args=$$parstack[$#$parstack]; }
-    my $size = &Apache::run::run("{$args;".'return $size}',$safeeval);
-    if ($size eq '') { $size=20; }
-    my $oldresponse = $Apache::lonhomework::history{"resource.$Apache::inputtags::part.$Apache::inputtags::response['-1'].submission"};
-    $result= '<input type="text" name="HWVAL'.$Apache::inputtags::response['-1'].'" value="'.$oldresponse.'" size="'.$size.'" />';
-  }
-  return $result;
+    my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
+    my $result = "";
+    if ($target eq 'web') {
+	my $size = &Apache::lonxml::get_param('size',$parstack,$safeeval);
+	if ($size eq '') { $size=20; }
+	my $oldresponse = $Apache::lonhomework::history{'resource.'.
+			  $Apache::inputtags::part.'.'.
+			  $Apache::inputtags::response['-1'].'.submission'};
+	$result = '<input type="text" name="HWVAL'.
+	          $Apache::inputtags::response['-1'].
+		  '" value="'.$oldresponse.'" size="'.$size.'" />';
+    }
+    if ($target eq 'edit') {
+	$result .= &Apache::edit::tag_start($target,$token,
+					 &Apache::lonxml::description($token));
+	$result .= &Apache::edit::text_arg('Size:','size',$token,'5').
+	           '</td></tr>';
+	$result .= &Apache::edit::end_table;
+    }
+    if ($target eq 'modified') {
+	my $constructtag = &Apache::edit::get_new_args($token,$parstack,
+						       $safeeval,'size');
+	if ($constructtag) { $result = &Apache::edit::rebuild_tag($token); }
+    }
+    return $result;
 }
 
+# =============================================================== End text line
 sub end_textline {
-  my ($target,$token,$parstack,$parser,$safeeval)=@_;
-  return "";
+    my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
+    if ($target eq 'edit') { return ('','no'); }
+    return "";
 }
 
-#answergroup is deprecated
-#sub start_answergroup {
-#  my ($target,$token,$parstack,$parser,$safeeval)=@_;
-#  my $args ='';
-#  if ( $#$parstack > -1 ) { $args=$$parstack[$#$parstack]; }
-#  my $id = &Apache::run::run("{$args;".'return $id}',$safeeval);
-#  push (@Apache::inputtags::answergroup,$id);
-#  if ($target == 'web') {
-#    
-#  }
-#  return '';
-#}
-#
-#sub end_answergroup {
-#  my ($target,$token,$parstack,$parser,$safeeval)=@_;
-#  return ''; # <answergroup> has ben deprecated
-#  my $args ='';
-#  if ( $#$parstack > -1 ) { $args=$$parstack[$#$parstack]; }
-#  my $id = &Apache::run::run("{$args;".'return $id}',$safeeval);
-#  push (@Apache::inputtags::answergroup,$id);
-#  my $result='';
-#  my $button='<input type="submit" name="submit" value="Submit All Answers" />';
-#  my $showbutton='1';
-#  my $usedtry='1';
-#  my $response='';
-#  if ( $target == 'web' ) {
-#    if ( defined $ENV{'form.submitted'}) {
-#    }
-#    if ($showbutton > 0) { $result.=$button }
-#  }
-#  pop @Apache::inputtags::answergroup;
-#  return $result;
-#}
-
-
+# ======================================================= Start data submission
 sub start_datasubmission {
+    return '';
 }
 
+# ========================================================= End data submission
 sub end_datasubmission {
-  my ($target,$token,$parstack,$parser,$safeeval)=@_;
-  if ( $target == 'web' ) {
-    return '<input type="submit" name="submit" value="Submit All Data" />';
-  }
-  return '';
+    my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
+    if ( $target == 'web' ) {
+	return '<input type="submit" name="submit" value="Submit All Data" />';
+    }
+    return '';
 }
 
+# ============================================================= Finalize awards
 sub finalizeawards {
-  my $result='';
-  my $award;
-  if ($#_ == '-1') { $result = "NO_RESPONSE"; }
-  if ($result eq '' ) {
-    foreach $award (@_) { if ($award eq '') {$result='MISSING_ANSWER'; last;}}
-  }
-  if ($result eq '' ) {
-    foreach $award (@_) { if ($award eq 'ERROR') {$result='ERROR'; last;}}
-  }
-
-  if ($result eq '' ) {
-    foreach $award (@_) { 
-      if ($award eq 'UNIT_FAIL' ||
-	  $award eq 'NO_UNIT' ||
-	  $award eq 'UNIT_NOTNEEDED') {
-	$result=$award; last;
-      }
-    }
-  }
-  if ($result eq '' ) {
-    foreach $award (@_) { 
-      if ($award eq 'WANTED_NUMERIC' || 
-	  $award eq 'BAD_FORMULA') {$result=$award; last;}
-    }
-  }
-  if ($result eq '' ) {
-    foreach $award (@_) { if ($award eq 'SIG_FAIL') {$result=$award; last;} }
-  }
-  if ($result eq '' ) {
-    foreach $award (@_) { if ($award eq 'INCORRECT') {$result=$award; last;} }
-  }
-  if ($result eq '' ) {
-    foreach $award (@_) { if ($award eq 'APPROX_ANS') {$result=$award; last;} }
-  }
-  if ($result eq '' ) { $result='EXACT_ANS'; }
-  return $result
+    my $result='';
+    my $award;
+    if ($#_ == '-1') { $result = "NO_RESPONSE"; }
+    if ($result eq '' ) {
+	foreach $award (@_) { if ($award eq '') {$result='MISSING_ANSWER';
+						 last;}}
+    }
+    if ($result eq '' ) {
+	foreach $award (@_) { if ($award eq 'ERROR') {$result='ERROR'; last;}}
+    }
+    if ($result eq '' ) {
+	foreach $award (@_) { if ($award eq 'NO_RESPONSE') {
+	    $result='NO_RESPONSE'; last;} }
+    }
+    if ($result eq '' ) {
+	foreach $award (@_) { 
+	    if ($award eq 'UNIT_FAIL' ||
+		$award eq 'NO_UNIT' ||
+		$award eq 'UNIT_NOTNEEDED') {
+		$result=$award; last;
+	    }
+	}
+    }
+    if ($result eq '' ) {
+	foreach $award (@_) { 
+	    if ($award eq 'WANTED_NUMERIC' || 
+		$award eq 'BAD_FORMULA') {$result=$award; last;}
+	}
+    }
+    if ($result eq '' ) {
+	foreach $award (@_) { if ($award eq 'SIG_FAIL') {
+	    $result=$award; last;} }
+    }
+    if ($result eq '' ) {
+	foreach $award (@_) { if ($award eq 'INCORRECT') {$result=$award;
+							  last;} }
+    }
+    if ($result eq '' ) {
+	foreach $award (@_) { if ($award eq 'SUBMITTED') {$result=$award;
+							  last;} }
+    }
+    if ($result eq '' ) {
+	foreach $award (@_) { if ($award eq 'APPROX_ANS') {$result=$award;
+							   last;} }
+    }
+    if ($result eq '' ) { $result='EXACT_ANS'; }
+    return $result;
 }
 
+# ====================================== Decide output (return 3 element array)
 sub decideoutput {
-  my ($award)=@_;
-  my $message='';
-  my $button=0;
-  if      ($award eq 'EXACT_ANS' || $award eq 'APPROX_ANS' ) {
-    $message = "<b>You are correct.</b> Your receipt is ".&Apache::lonnet::receipt;
-    $button=0;
-  } elsif ($award eq 'NO_RESPONSE') {
-    $message = '';
-    $button=1;
-  } elsif ($award eq 'MISSING_ANSWER') {
-    $message = 'Some parts were not submitted';
-    $button = 1;
-  } elsif ($award eq 'WANTED_NUMERIC') {
-    $message = "This question expects a numeric answer";
-    $button=1;
-  } elsif ($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";
-    $button=1;
-  } elsif ($award eq 'UNIT_NOTNEEDED') {
-    $message = "Only a number required.";# Computer reads units of %s";
-    $button=1;
-  } elsif ($award eq 'NO_UNIT') {
-    $message = "Units required";
-    $button=1;
-  } elsif ($award eq 'BAD_FORMULA') {
-    $message = "Unable to understand formula";
-    $button=1;
-  } elsif ($award eq 'INCORRECT') {
-    $message = "Incorrect";
-    $button=1;
-  } else {
-    $message = "Unknown message: $award";
-    $button=1;
-  }
-  return ($button,$message);
+    my ($award,$solved,$previous)=@_;
+    my $message='';
+    my $button=0;
+    my $previousmsg;
+    
+    if ($previous) { $previousmsg='You have entered that answer before'; }
+    
+    if      ($solved =~ /^correct/) {
+	$message = "<b>You are correct.</b> Your receipt is ".
+	    &Apache::lonnet::receipt;
+	$button=0;
+	$previousmsg='';
+    } elsif ($solved =~ /^excused/) {
+	$message = "<b>You are excused from the problem.</b>";
+	$button=0;
+	$previousmsg='';
+    } elsif ($award eq 'EXACT_ANS' || $award eq 'APPROX_ANS' ) {
+	if ($solved =~ /^incorrect/ || $solved eq '') {
+	    $message = "Incorrect";
+	    $button=1;
+	} else {
+	    $message = "<b>You are correct.</b> Your receipt is ".
+		&Apache::lonnet::receipt;
+	    $button=0;
+	    $previousmsg='';
+	}
+    } elsif ($award eq 'NO_RESPONSE') {
+	$message = '';
+	$button=1;
+    } elsif ($award eq 'MISSING_ANSWER') {
+	$message = 'Some parts were not submitted';
+	$button = 1;
+    } elsif ($award eq 'WANTED_NUMERIC') {
+	$message = "This question expects a numeric answer";
+	$button=1;
+    } elsif ($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";
+	$button=1;
+    } elsif ($award eq 'UNIT_NOTNEEDED') {
+	$message = "Only a number required.";# Computer reads units of %s";
+	$button=1;
+    } elsif ($award eq 'NO_UNIT') {
+	$message = "Units required";
+	$button=1;
+    } elsif ($award eq 'BAD_FORMULA') {
+	$message = "Unable to understand formula";
+	$button=1;
+    } elsif ($award eq 'INCORRECT') {
+	$message = "Incorrect";
+	$button=1;
+    } elsif ($award eq 'SUBMITTED') {
+	$message = "Your submission has been recorded.";
+	$button=1;
+    } else {
+	$message = "Unknown message: $award";
+	$button=1;
+    }
+    return ($button,$message,$previousmsg);
 }
 
+# ============================================================== Set grade data
 sub setgradedata {
-  my ($award,$id) = @_;
-  if ( $award eq 'APPROX_ANS' || $award eq 'EXACT_ANS' ) {
-    $Apache::lonhomework::results{"resource.$id.tries"} =
-      $Apache::lonhomework::history{"resource.$id.tries"} + 1;
-    $Apache::lonhomework::results{"resource.$id.solved"} =
-      'correct_by_student';
-    $Apache::lonhomework::results{"resource.$id.awarded"} = '1';
-  } elsif ( $award eq 'INCORRECT' ) {
-    $Apache::lonhomework::results{"resource.$id.tries"} =
-      $Apache::lonhomework::history{"resource.$id.tries"} + 1;
-    $Apache::lonhomework::results{"resource.$id.solved"} =
-      'incorrect_attempted';
-  } else {
-    $Apache::lonhomework::results{"resource.$id.solved"} =
-      'incorrect_attempted';
-  }
-  $Apache::lonhomework::results{"resource.$id.award"} = $award;
+    my ($award,$id,$previously_used) = @_;
+    # if the student already has it correct, don't modify the status
+    if ( $Apache::lonhomework::history{"resource.$id.solved"} !~ /^correct/ ) {
+	#handle assignment of tries and solved status
+	if ( $award eq 'APPROX_ANS' || $award eq 'EXACT_ANS' ) {
+	    $Apache::lonhomework::results{"resource.$id.tries"} =
+		$Apache::lonhomework::history{"resource.$id.tries"} + 1;
+	    $Apache::lonhomework::results{"resource.$id.solved"} =
+		'correct_by_student';
+	    $Apache::lonhomework::results{"resource.$id.awarded"} = '1';
+	} elsif ( $award eq 'INCORRECT' ) {
+	    $Apache::lonhomework::results{"resource.$id.tries"} =
+		$Apache::lonhomework::history{"resource.$id.tries"} + 1;
+	    $Apache::lonhomework::results{"resource.$id.solved"} =
+		'incorrect_attempted';
+	} elsif ( $award eq 'SUBMITTED' ) {
+	    $Apache::lonhomework::results{"resource.$id.tries"} =
+		$Apache::lonhomework::history{"resource.$id.tries"} + 1;
+	    $Apache::lonhomework::results{"resource.$id.solved"} =
+		'ungraded_attempted';
+	} elsif ( $award eq 'NO_RESPONSE' ) {
+	    return '';
+	} else {
+	    $Apache::lonhomework::results{"resource.$id.solved"} =
+		'incorrect_attempted';
+	}
+	
+	# check if this was a previous submission if it was delete the
+	# unneeded data and update the previously_used attribute
+	if ( $previously_used eq 'PREVIOUSLY_USED') {
+	    delete($Apache::lonhomework::results{"resource.$id.tries"});
+	    $Apache::lonhomework::results{"resource.$id.previous"} = '1';
+	} elsif ( $previously_used eq 'PREVIOUSLY_LAST') {
+	    #delete all data as they student didn't do anything
+	    foreach my $key (keys(%Apache::lonhomework::results)) {
+		if ($key =~ /^resource\.$id\./) {
+		    &Apache::lonxml::debug("Removing $key");
+		    delete($Apache::lonhomework::results{$key});
+		}
+	    }
+	    #and since they didn't do anything we were never here
+	    return '';
+	} else {
+	    $Apache::lonhomework::results{"resource.$id.previous"} = '0';
+	}
+    }
+    $Apache::lonhomework::results{"resource.$id.award"} = $award;
 }
 
+# ======================================================================= Grade
 sub grade {
-  my ($target) = @_;
-  my $id = $Apache::inputtags::part;
-#  my $result='';
-  my $response='';
-  if ( $target == 'web' ) {
+    my ($target) = @_;
+    my $id = $Apache::inputtags::part;
+    my $response = '';
     if ( defined $ENV{'form.submitted'}) {
-      my @awards = ();
-      &Apache::lonxml::debug("$#Apache::inputtags::responselist");
-      foreach $response (@Apache::inputtags::responselist) {
-	&Apache::lonxml::debug("looking for response.$id.$response.awarddetail");
-	my $value=$Apache::lonhomework::results{"resource.$id.$response.awarddetail"};
-	if ( $value ne '' ) {
-	  &Apache::lonxml::debug("keep ing $value from $response for $id");
-	  push (@awards,$value);
-	} else {
-	  &Apache::lonxml::debug("skipping $value from $response for $id");
+	my @awards = ();
+	foreach $response (@Apache::inputtags::responselist) {
+	    &Apache::lonxml::debug("looking for response.$id.$response.".
+				   "awarddetail");
+	    my $value=$Apache::lonhomework::results{"resource.$id.$response.".
+						    "awarddetail"};
+	    if ( $value ne '' ) {
+		&Apache::lonxml::debug("keeping $value from $response for".
+				       " $id");
+		push (@awards,$value);
+	    } else {
+		&Apache::lonxml::debug("skipping $value from $response for".
+				       " $id");
+	    }
+	}
+	my $finalaward = &finalizeawards(@awards);
+	my $previously_used;
+	if ( $#Apache::inputtags::previous eq $#awards ) {
+	    $previously_used = 'PREVIOUSLY_LAST';
+	    foreach my $value (@Apache::inputtags::previous) {
+		if ($value eq 'PREVIOUSLY_USED' ) {
+		    $previously_used = $value;
+		    last;
+		}
+	    }
 	}
-      }
-      my $finalaward = &finalizeawards(@awards);
-      &Apache::lonxml::debug("final award $finalaward");
-      &setgradedata($finalaward,$id);
+	&Apache::lonxml::debug("final award $finalaward, $previously_used");
+	&setgradedata($finalaward,$id,$previously_used);
     }
-  }
-  return '';
+    return '';
 }
 
+# ========================================= Grade status (return scalar string)
 sub gradestatus {
-  my ($id) = @_;
-  my $showbutton = 1;
-  my $message = '';
-  my $trystr='';
-  my $button='';
-  
-  my $status = $Apache::inputtags::status['-1'];
-  &Apache::lonxml::debug("gradestatus has :$status:");
-  if ( $status ne 'CLOSED' ) {  
-    my $award = $Apache::lonhomework::history{"resource.$id.award"};
-    &Apache::lonxml::debug("Found Award |$award|");
-    if ( $award ne '' ) {
-      &Apache::lonxml::debug('Getting message');
-      ($showbutton,$message) = &decideoutput($award);
-      $message="<br /><table bgcolor=\"#aaffaa\"><tr><td>$message</td></tr></table>";
-    }
-    my $tries = $Apache::lonhomework::history{"resource.$id.tries"};
-    my $maxtries = &Apache::lonnet::EXT("resource.$id.maxtries");
-    &Apache::lonxml::debug("got maxtries of :$maxtries:");
-    if ( $tries eq '' ) { $tries = '0'; }
-    if ( $maxtries eq '' ) { $maxtries = '2'; } 
-    if ( $maxtries eq 'con_lost' ) { $maxtries = '0'; } 
-    if ( $showbutton ) {
-      $trystr = "<br />Tries $tries/$maxtries";
-    }
-    if ( $status eq 'SHOW_ANSWER' || $status eq 'CANNOT_ANSWER') {$showbutton = 0;}
-    if ( $showbutton ) { 
-      $button = '<br /><input type="submit" name="submit" value="Submit All Answers" />';
+    my ($id) = @_;
+    my $showbutton = 1;
+    my $message = '';
+    my $trystr = '';
+    my $button = '';
+    my $previousmsg = '';
+    
+    my $status = $Apache::inputtags::status['-1'];
+    &Apache::lonxml::debug("gradestatus has :$status:");
+    if ( $status ne 'CLOSED' ) {  
+	my $award = $Apache::lonhomework::history{"resource.$id.award"};
+	my $solved = $Apache::lonhomework::history{"resource.$id.solved"};
+	my $previous = $Apache::lonhomework::history{"resource.$id.previous"};
+	&Apache::lonxml::debug("Found Award |$award|$solved|");
+	if ( $award ne '' ) {
+	    &Apache::lonxml::debug('Getting message');
+	    ($showbutton,$message,$previousmsg) =
+		&decideoutput($award,$solved,$previous);
+	    $message = "<td bgcolor=\"#aaffaa\">$message</td>";
+	    if ($previousmsg) {
+		$previousmsg = "<td bgcolor=\"#ffaaaa\">$previousmsg</td>";
+	    }
+	}
+	my $tries = $Apache::lonhomework::history{"resource.$id.tries"};
+	my $maxtries = &Apache::lonnet::EXT("resource.$id.maxtries");
+	&Apache::lonxml::debug("got maxtries of :$maxtries:");
+	if ( $tries eq '' ) { $tries = '0'; }
+	if ( $maxtries eq '' ) { $maxtries = '2'; } 
+	if ( $maxtries eq 'con_lost' ) { $maxtries = '0'; } 
+	if ( $showbutton ) {
+	    $trystr = "<td>Tries $tries/$maxtries</td>";
+	}
+	if ( $status eq 'SHOW_ANSWER' || $status eq 'CANNOT_ANSWER') {
+	    $showbutton = 0;}
+	if ( $showbutton ) { 
+	    $button = '<br /><input type="submit" name="submit" value='.
+		      '"Submit All Answers" />';
+	}
+    }
+    my $output= $previousmsg.$message.$trystr;
+    if ($output =~ /^\s*$/) {
+	return $button;
+    } else {
+	return $button.'<table><tr>'.$previousmsg.$message.$trystr.
+	       '</tr></table>';
     }
-  }
-  return $button.$message.$trystr;
 }
+
 1;
+
 __END__
-