--- loncom/homework/edit.pm	2001/05/31 22:37:56	1.8
+++ loncom/homework/edit.pm	2001/06/26 21:39:55	1.14
@@ -6,15 +6,24 @@ 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,$token) = @_;
+  my ($target,$token,$description) = @_;
   my $result='';
   if ($target eq "edit") {
     my $tag=$token->[1];
-#    my $color = sprintf("#%06lx",(hex("ffffff")) >> scalar(split(/_/,$Apache::lonxml::curdepth)));
-    my $color = sprintf("#%02lxffff",33* scalar(split(/_/,$Apache::lonxml::curdepth)));
-    $result.="<table bgcolor=\"$color\" width=\"100%\" border=\"2\"><tr><td>&lt;$tag&gt;</td>
-<td>Delete:".
+    if (!$description) { $description="&lt;$tag&gt;"; }
+    $result.= &start_table($token)."<tr><td>$description</td>
+<td>Delete".
   &deletelist($target,$token)
   ."</td>
 <td>".
@@ -26,37 +35,87 @@ sub tag_start {
 }
 
 sub tag_end {
-  my ($target,$token) = @_;
+  my ($target,$token,$description) = @_;
   my $result='';
   if ($target eq 'edit') {
     my $tag=$token->[1];
-    $result.="</td></tr><tr><td>&lt;/$tag&gt;</td></tr></table>\n";
+    if (!defined($description)) {
+      $result.="</td></tr><tr><td>&lt;/$tag&gt;</td><td colspan=\"2\">&nbsp;</td>";
+    } else {
+      if ($description ne '') { $result.="</td></tr><tr><td>$description</td><td colspan=\"2\">&nbsp;</td>"; }
+    }
+    $result.="</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=\"5\">";
+  return $result;
+}
+
+sub end_table {
+  $Apache::edit::colordepth--;
+  my $result="</table>";
   return $result;
 }
 
 sub deletelist {
   my ($target,$token) = @_;
   my $result = "<select name=\"delete_$Apache::lonxml::curdepth\">
-<option>Nothing</option>
-<option>Tag</option>
-<option>Subtags</option>
+<option></option>
+<option>Yes</option>
 </select>";
   return $result;
 }
 
+sub handle_delete {
+  if (!$ENV{"form.delete_$Apache::lonxml::curdepth"}) { return ''; }
+  my ($space,$target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
+  my $result=0;
+  if ($space) {
+    my $sub1="$space\:\:delete_$token->[1]";
+    {
+      no strict 'refs';
+      if (defined &$sub1) {
+	$result=&$sub1($target,$token,$tagstack,$parstack,$parser,$safeeval,$style);
+      }
+    }
+  }
+  if (!$result) {
+    my $endtag='/'.$token->[1];
+    my $bodytext=&Apache::lonxml::get_all_text($endtag,$$parser[$#$parser]);
+    $$parser['-1']->get_token();
+    &Apache::lonxml::debug("Deleting :$bodytext: for $token->[1]");
+    &Apache::lonxml::end_tag($tagstack,$parstack,$token);
+  }
+  return 1;
+}
+
 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"}) {
-    &Apache::lonxml::debug("Adding1 $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"}) {
-      &Apache::lonxml::debug("Adding2 $namespace".'::'."$token->[1].which");
       push (@tagnums, @{ $Apache::lonxml::insertlist{"$namespace".'::'."$token->[1].which"} });
     }
   }
@@ -79,6 +138,8 @@ sub insertlist {
 <select name=\"insert_$Apache::lonxml::curdepth\">
 $optionlist
 </select>"
+    } else {
+      $result="&nbsp;";
     }
   }
   return $result;
@@ -108,6 +169,8 @@ sub insert_optionresponse {
 <optionresponse max="10">
     <foilgroup options="">
     </foilgroup>
+    <hintgroup>
+    </hintgroup>
 </optionresponse>';
 }
 
@@ -123,9 +186,9 @@ sub editfield {
   if ($maxlength < $minwidth) { $maxlength = $minwidth; }
   if ( $count < $minheight) { $count = $minheight; }
   if ($description) {
-    $description="<br />".$description;
+    $description="<br />".$description."<br />";
   }
-  return "$description<br />\n&nbsp;&nbsp;&nbsp;<textarea rows=\"$count\" cols=\"$maxlength\" name=homework_edit_".$Apache::lonxml::curdepth.">$data</textarea>\n";
+  return "$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";
 }
 
@@ -149,7 +212,72 @@ sub modifiedfield {
 }
 
 sub insert_startouttext {
-  return "\n<startouttext />\n<endouttext />";
+  return "<startouttext />\n<endouttext />";
+}
+
+sub insert_script {
+  return "\n<script type=\"loncapa/perl\">\n</script>";
+}
+
+# Returns a 1 if the toekn has been modified and you should rebuild the tag
+# side-effects, will modify the $token if new values are found
+sub get_new_args {
+  my ($token,$parstack,$safeeval,@args)=@_;
+  my $rebuild=0;
+  foreach my $arg (@args) {
+    my $value=&Apache::lonxml::get_param($arg,$parstack,$safeeval);
+    my $newvalue=$ENV{"form.$Apache::lonxml::curdepth.$arg"};
+    &Apache::lonxml::debug(" for:$arg: cur is :$value: new is :$newvalue:");
+    if ($value ne $newvalue) {
+      $token->[2]->{$arg}=$newvalue;
+      $rebuild=1;
+    }
+  }
+  return $rebuild;
+}
+
+sub rebuild_tag {
+  my ($token) = @_;
+  my $result;
+  if ($token->[0] eq 'S') {
+    $result = '<'.$token->[1];
+    while (my ($key,$val)= each(%{$token->[2]})) {
+      &Apache::lonxml::debug("setting :$key: to  :$val:");
+      $result.=' '.$key.'="'.$val.'"';
+    }
+    $result.=">";
+  } elsif ( $token->[0] eq 'E' ) {
+    $result = '</'.$token->[1].'>';
+  }
+  return $result;
+}
+
+sub text_arg {
+  my ($description,$name,$token,$size) = @_;
+  my $result;
+  if (!defined $size) { $size=20; }
+  my $arg=$token->[2]{$name};
+  $result=$description.'<input name="'."$Apache::lonxml::curdepth.$name".
+    '" type="text" value="'.$arg.'" size="'.$size.'" />';
+  return $result;
+}
+
+sub select_arg {
+  my ($description,$name,$list,$token) = @_;
+  my $result;
+  my $optionlist="";
+  my $selected=$token->[2]{$name};
+  foreach my $option (@$list) {
+    if ( $selected eq $option ) {
+      $optionlist.="<option selected=\"on\">$option</option>\n";
+    } else {
+      $optionlist.="<option>$option</option>\n";
+    }
+  }
+  $result.=$description.'<select name="'."$Apache::lonxml::curdepth.$name".'">
+       '.$optionlist.'
+      </select></td></tr><tr><td colspan="3">';
+  return $result;
 }
 
 1;