# 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)."<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,$token,$description) = @_;
my $result='';
if ($target eq 'edit') {
my $tag=$token->[1];
if (!defined($description)) {
$result.="</td></tr><tr><td></$tag></td><td colspan=\"2\"> </td>";
} else {
if ($description ne '') { $result.="</td></tr><tr><td>$description</td><td colspan=\"2\"> </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></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"}) {
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=" ";
}
}
return $result;
}
sub handle_insert {
if ($ENV{"form.insert_$Apache::lonxml::curdepth"} eq '') { 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</$newtag>";
} else {
if (defined(&$func)) {
{
no strict 'refs';
$result.=&$func();
}
} else {
my $newtag=$Apache::lonxml::insertlist{"$tagnum.tag"};
&Apache::lonxml::error("Unable to insert tag $newtag, $func was not defined.");
}
}
return $result;
}
sub insert_responseparam {
return '
<responseparam />';
}
sub insert_numericalresponse {
return '
<numericalresponse answer="">
<textline />
<hintgroup>
</hintgroup>
</numericalresponse>';
}
sub insert_optionresponse {
return '
<optionresponse max="10">
<foilgroup options="">
</foilgroup>
<hintgroup>
</hintgroup>
</optionresponse>';
}
sub editfield {
my ($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 "$description\n <textarea rows=\"$count\" cols=\"$maxlength\" name=homework_edit_".$Apache::lonxml::curdepth.">$data</textarea>\n";
# return "<br />\n<$tag><br />\n <textarea rows=\"$count\" cols=\"$maxlength\" name=homework_edit_".$Apache::lonxml::curdepth.">$data</textarea><br />\n</$tag><br />\n";
}
sub modifiedfield {
my ($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 "<startouttext />\n<endouttext />";
}
sub insert_script {
return "\n<script type=\"loncapa/perl\">\n</script>";
}
# Returns a 1 if the token 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 $rebuild;
}
# looks for /> on start tags
sub rebuild_tag {
my ($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.'="'.$val.'"';
}
if ($token->[4] =~ m:/>$:) {
$result.=' />';
} else {
$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;
__END__
FreeBSD-CVSweb <freebsd-cvsweb@FreeBSD.org>