--- loncom/homework/edit.pm	2001/03/22 21:21:29	1.1
+++ loncom/homework/edit.pm	2001/06/16 18:35:27	1.11
@@ -6,24 +6,190 @@ package Apache::edit;
 use strict;
 use Apache::lonnet;
 
+# Global Vars
+# default list of colors to use in editing
+@Apache::edit::colorlist=('#ffffff','#ff0000','#00ff00','#0000ff','#0ff000','#000ff0','#f0000f');
+# depth of nesting of edit
+$Apache::edit::colordepth=0;
+
+sub initialize_edit {
+  $Apache::edit::colordepth=0;
+}
+
 sub tag_start {
-  my ($target,$token,$parstack,$parser,$safeeval,$style)=@_;
+  my ($target,$token,$description) = @_;
   my $result='';
-
-  $result.="<table border=\"1\"><tr><td>&lt;$token->[1]&gt;</td>
-<td><input type=\"submit\" name=\"delete_$Apache::lonxml::curdepth\" value=\"Delete\" /></td>
-<td><input type=\"submit\" name=\"insert_$Apache::lonxml::curdepth\" value=\"Insert\" /></td>
+  if ($target eq "edit") {
+    my $tag=$token->[1];
+    if (!$description) { $description="&lt;$tag&gt;"; }
+    $result.= &start_table($token)."<tr><td>$description</td>
+<td>Delete:".
+  &deletelist($target,$token)
+  ."</td>
+<td>".
+  &insertlist($target,$token).
+    "</td>
 </tr><tr><td colspan=\"3\">\n";
+  }
   return $result;
 }
 
 sub tag_end {
-  my ($target,$token,$parstack,$parser,$safeeval,$style)=@_;
+  my ($target,$token,$description) = @_;
   my $result='';
+  if ($target eq 'edit') {
+    my $tag=$token->[1];
+    if (!defined($description)) {
+      $result.="</td></tr><tr><td>&lt;/$tag&gt;";
+    } else {
+      if ($description ne '') { $result.="</td></tr><tr><td>$description"; }
+    }
+    $result.="</td><td>&nbsp;</td><td>&nbsp;</td></tr>".&end_table()."\n";
+  }
+  return $result;
+}
+
+sub start_table {
+  my ($token)=@_;
+  my $tag = $token->[1];
+  my $tagnum;
+  foreach my $namespace (reverse @Apache::lonxml::namespace) {
+    my $testtag=$Apache::lonxml::namespace['-1'].'::'.$tag;
+    $tagnum=$Apache::lonxml::insertlist{"$testtag.num"};
+    if (defined($tagnum)) { last; }
+  }
+  if (!defined ($tagnum)) { $tagnum=$Apache::lonxml::insertlist{"$tag.num"}; }
+  my $color = $Apache::lonxml::insertlist{"$tagnum.color"};
+  if (!defined($color)) {
+    $color = $Apache::edit::colorlist[$Apache::edit::colordepth];
+  }
+  $Apache::edit::colordepth++;
+  my $result="<table bgcolor=\"$color\" width=\"100%\" border=\"10\">";
+  return $result;
+}
+
+sub end_table {
+  $Apache::edit::colordepth--;
+  my $result="</table>";
+  return $result;
+}
 
-  $result.="</td></tr><tr><td>&lt;/$token->[1]&gt;</td></tr></table>\n";
+sub deletelist {
+  my ($target,$token) = @_;
+  my $result = "<select name=\"delete_$Apache::lonxml::curdepth\">
+<option>Nothing</option>
+<option>Tag</option>
+<option>Subtags</option>
+</select>";
+  return $result;
+}
+
+sub get_insert_list {
+  my ($token) = @_;
+  my $result='';
+  my @tagnums= ();
+  #&Apache::lonxml::debug("keys ".join("\n",sort(keys(%Apache::lonxml::insertlist))));
+  if ($Apache::lonxml::insertlist{"$token->[1].which"}) {
+    push (@tagnums, @{ $Apache::lonxml::insertlist{"$token->[1].which"} });
+  }
+  foreach my $namespace (@Apache::lonxml::namespace) {
+    if ($Apache::lonxml::insertlist{"$namespace".'::'."$token->[1].which"}) {
+      push (@tagnums, @{ $Apache::lonxml::insertlist{"$namespace".'::'."$token->[1].which"} });
+    }
+  }
+  if (@tagnums) {
+    foreach my $tagnum (@tagnums) {
+      $result.='<option value="'.$tagnum.'">'.$Apache::lonxml::insertlist{"$tagnum.description"}."</option>\n";
+    }
+    if ($result) { $result='<option selected="on"></option>'.$result; }
+  }
   return $result;
 }
 
+sub insertlist {
+  my ($target,$token) = @_;
+  my $result;
+  if ($target eq 'edit') {
+    my $optionlist= &get_insert_list($token);
+    if ($optionlist) {
+      $result = "Insert:
+<select name=\"insert_$Apache::lonxml::curdepth\">
+$optionlist
+</select>"
+    } else {
+      $result="&nbsp;";
+    }
+  }
+  return $result;
+}
+
+sub handle_insert {
+  if (!$ENV{"form.insert_$Apache::lonxml::curdepth"}) { return ''; }
+  my $result;
+  my $tagnum = $ENV{"form.insert_$Apache::lonxml::curdepth"};
+  my $func=$Apache::lonxml::insertlist{"$tagnum.function"};
+  if ($func eq 'default') {
+    my $newtag=$Apache::lonxml::insertlist{"$tagnum.tag"};
+    my $namespace;
+    if ($newtag =~ /::/) { ($namespace,$newtag) = split(/::/,$newtag); }
+    $result.="\n<$newtag>\n</$newtag>";
+  } else {
+    {
+      no strict 'refs';
+      $result.=&$func();
+    }
+  }
+  return $result;
+}
+
+sub insert_optionresponse {
+  return '
+<optionresponse max="10">
+    <foilgroup options="">
+    </foilgroup>
+</optionresponse>';
+}
+
+sub editfield {
+  my ($tag,$data,$description,$minwidth,$minheight)=@_;
+  
+  my $count=0;
+  my $maxlength=-1;
+  map { $count++;
+	if (length($_) > $maxlength) { $maxlength = length ($_); }
+      } split ("\n", $data);
+  if ($maxlength > 80) { $maxlength = 80; }
+  if ($maxlength < $minwidth) { $maxlength = $minwidth; }
+  if ( $count < $minheight) { $count = $minheight; }
+  if ($description) {
+    $description="<br />".$description."<br />";
+  }
+  return "$description\n&nbsp;&nbsp;&nbsp;<textarea rows=\"$count\" cols=\"$maxlength\" name=homework_edit_".$Apache::lonxml::curdepth.">$data</textarea>\n";
+#  return "<br />\n&lt;$tag&gt;<br />\n&nbsp;&nbsp;&nbsp;<textarea rows=\"$count\" cols=\"$maxlength\" name=homework_edit_".$Apache::lonxml::curdepth.">$data</textarea><br />\n&lt;/$tag&gt;<br />\n";
+}
+
+sub modifiedfield {
+  my ($token) = @_;
+  my $result;
+#  foreach my $envkey (sort keys %ENV) {
+#    &Apache::lonxml::debug("$envkey ---- $ENV{$envkey}");
+#  }
+#  &Apache::lonxml::debug("I want homework_edit_$Apache::lonxml::curdepth");
+#  &Apache::lonxml::debug($ENV{"form.homework_edit_$Apache::lonxml::curdepth"});
+  $result=$ENV{"form.homework_edit_$Apache::lonxml::curdepth"};
+  if (defined $token) {
+    if (defined $token->[4]) {
+      $result=$token->[4].$result;
+    } else {
+      $result=$result.$token->[2];
+    }
+  }
+  return $result;
+}
+
+sub insert_startouttext {
+  return "\n<startouttext />\n<endouttext />";
+}
+
 1;
 __END__