--- loncom/homework/hint.pm	2000/12/21 18:13:33	1.2
+++ loncom/homework/hint.pm	2001/08/17 21:42:19	1.18
@@ -2,57 +2,127 @@ package Apache::hinttags;
 
 use strict;
 use Apache::lonnet;
+use capa;
 
 sub BEGIN {
-  &Apache::lonxml::register('Apache::hinttags',('hintgroup','hintpart'));
+  &Apache::lonxml::register('Apache::hinttags',('hintgroup','hintpart','numericalhint'));
 }
 
 
+@Apache::hint::which=();
 sub start_hintgroup {
-  my ($target,$token,$parstack,$parser,$safeeval,$style)=@_;
-  my $id=$Apache::inputtags::part;
-  my $numtries=$Apache::lonhomework::history{"resource.$id.tries"};
-  if ( $numtries eq '') { $numtries = 0; }
-  my $hinttries=&Apache::lonnet::EXT("resource.$id.hinttries");
-  if ( $hinttries eq '') { $hinttries = 1; }
-  &Apache::lonxml::debug("found :$id:$numtries:$hinttries:");
-  if ( $numtries < $hinttries ) {
+  my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
+  my $skiptoend='0';
+  my $result;
+  
+  if ($target eq 'web') {
+    my $id=$Apache::inputtags::part;
+    my $numtries=$Apache::lonhomework::history{"resource.$id.tries"};
+    if ( $numtries eq '') { $numtries = 0; }
+    my $hinttries=&Apache::lonnet::EXT("resource.$id.hinttries");
+    if ( $hinttries eq '') { $hinttries = 1; }
+    &Apache::lonxml::debug("found :$id:$numtries:$hinttries:");
+    if ( $numtries < $hinttries ) {
+      $skiptoend='1';
+    } else {
+      if ($target eq 'web') {$result='<table bgcolor="#dddddd"><tr><td>';}
+    }
+  }
+  if ($skiptoend) {
     &Apache::lonxml::get_all_text("/hintgroup",$$parser[$#$parser]);
   }
-  return '';
+  @Apache::hint::which=();
+  return $result;
 }
 
 sub end_hintgroup {
+  my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
+  my $result;
+
+  if ($target eq 'web') {
+    my $id=$Apache::inputtags::part;
+    my $numtries=$Apache::lonhomework::history{"resource.$id.tries"};
+    if ( $numtries eq '') { $numtries = 0; }
+    my $hinttries=&Apache::lonnet::EXT("resource.$id.hinttries");
+    if ( $hinttries eq '') { $hinttries = 1; }
+    &Apache::lonxml::debug("found :$id:$numtries:$hinttries:");
+    if ( $numtries => $hinttries ) {
+      if ($target eq 'web') {$result='</td></tr></table>';}
+    }	
+  }
+  @Apache::hint::which='';
+  return $result;
+}
+
+sub start_numericalhint {
+  my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
+  #do everything in end, so intervening <responseparams> work
+  &Apache::response::start_hintresponse($parstack,$safeeval);
+  return '';
+}
+
+sub end_numericalhint {
+  my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
+  my $result;
+  if ($target eq 'web') {
+    $safeeval->share_from('capa',['&caparesponse_capa_check_answer']);
+    my $name= &Apache::lonxml::get_param('name',$parstack,$safeeval);
+    &Apache::response::setup_params('numericalhint');
+    my $partid=$Apache::inputtags::part;
+    my $id=$Apache::inputtags::response['-1'];
+    #id submissions occured under
+    my $submitid=$Apache::inputtags::response['-2'];
+    my $response = $Apache::lonhomework::history{
+			    "resource.$partid.$submitid.submission"};
+    &Apache::lonxml::debug("hintgroup is using $response<br />\n");
+    #build safe space expression
+    my $expression="&caparesponse_check_list('".$response."','".
+      $$parstack[$#$parstack];
+    #need to get all possible parms
+    foreach my $key (keys(%Apache::inputtags::params)) {
+      $expression.= ';my $'. #'
+	$key.'="'.$Apache::inputtags::params{$key}.'"';
+    }
+    $expression.="');";
+    $result = &Apache::run::run($expression,$safeeval);
+    &Apache::lonxml::debug("$expression:result:$result:$Apache::lonxml::curdepth");
+    my ($awards) = split /:/ , $result;
+    my ($ad) = &Apache::inputtags::finalizeawards(split /,/ , $awards);
+    if ($ad eq 'EXACT_ANS' || $ad eq 'APPROX_ANS') { push (@Apache::hint::which,$name); }
+    $result='';
+  } elsif ($target eq 'meta') {
+    $result=&Apache::response::meta_package_write('numericalhint');
+  }
+  &Apache::response::end_hintresponse();
+  return $result;
 }
 
 # a part shows if it is on, if no specific parts are on, then default shows
 sub start_hintpart {
-  return '';
-  my ($target,$token,$parstack,$parser,$safeeval,$style)=@_;
+  my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
 
   my $show ='0';
-  if ($target ne 'meta' && $target ne 'grade') {
-    my $args ='';
-    if ( $#$parstack > -1 ) { $args=$$parstack[$#$parstack]; }
-    my $on = &Apache::run::run("{$args;".'return $on}',$safeeval);
-    if ( $on eq 'default') {
+
+  if ($target eq 'web') {
+    my $on= &Apache::lonxml::get_param('on',$parstack,$safeeval);
+    &Apache::lonxml::debug("hintpart sees $on and ,$#Apache::hint::which");
+    if ( $on eq 'default' && $#Apache::hint::which == '-1') {
+      $show=1;
     } else {
-      my (%results) = &Apache::run::run("{$args; return ".'\%'.$on,$safeeval);
-      my $key;
-      foreach $key (keys %results) {
-	&Apache::lonxml::debug("Got $key");
-      }
+      my $which;
+      foreach $which (@Apache::hint::which) { if ($which eq $on) { $show = 1; last } }
     }
     if (!$show) {
-      &Apache::lonxml::get_all_text("/problem",$$parser[$#$parser]);
+      &Apache::lonxml::get_all_text("/hintpart",$$parser[$#$parser]);
     }
-  } else {
-    &Apache::lonxml::get_all_text("/problem",$$parser[$#$parser]);
+  } elsif ($target eq 'grade') {
+    &Apache::lonxml::get_all_text("/hintpart",$$parser[$#$parser]);
   }
   return '';
 }
 
 sub end_hintpart {
+  return '';
 }
 
 1;