# The LearningOnline Network with CAPA
# edit mode helpers
# 3/20 Guy
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,$token,$description) = @_;
my $result='';
if ($target eq "edit") {
my $tag=$token->[1];
if (!$description) { $description="<$tag>"; }
$result.= &start_table($token)."
$description
Delete:".
&deletelist($target,$token)
."
".
&insertlist($target,$token).
"
\n";
}
return $result;
}
sub tag_end {
my ($target,$token,$description) = @_;
my $result='';
if ($target eq 'edit') {
my $tag=$token->[1];
if (!defined($description)) {
$result.="
</$tag>";
} else {
if ($description ne '') { $result.="
$description"; }
}
$result.="
".&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="
";
return $result;
}
sub end_table {
$Apache::edit::colordepth--;
my $result="
";
return $result;
}
sub deletelist {
my ($target,$token) = @_;
my $result = "";
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) {
$result.='\n";
}
if ($result) { $result=''.$result; }
}
return $result;
}
sub insertlist {
my ($target,$token) = @_;
my $result;
if ($target eq 'edit') {
my $optionlist= &get_insert_list($token);
if ($optionlist) {
$result = "Insert:
"
} else {
$result=" ";
}
}
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 $result;
}
sub insert_optionresponse {
return '
';
}
sub editfield {
my ($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) {
$description=" ".$description." ";
}
return "$description\n \n";
# return " \n<$tag> \n \n</$tag> \n";
}
sub modifiedfield {
my ($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\n";
}
1;
__END__