Or, if you need to do this during construction, consider subclassing HTML::TreeBuilder and selectively overriding methods.
That won't work if HTML::TreeBuilder has "hard coded" the name of HTML::Element, which I suspect it has.

As a hack, I'd just define methods in HTML::Element's space.

For long term, write the author of HTML::TreeBuilder and tell him to make the subclass an overrideable constant: 

package HTML::TreeBuilder;
sub element_class { return "HTML::Element"; }
...
sub make_sub_node {
  ...
  my $ele = $self->element_class->new(...); #makes an HTML::Element pe
+rhaps
  ..
}

[download]
because then you can override that: 
package My::TreeBuilder;
use base qw(HTML::TreeBuilder);
sub element_class { return "My::Element" };
package My::Element;
use base qw(HTML::Element);
sub my_additional_method { ... }

[download]
.

-- Randal L. Schwartz, Perl hacker

In reply to Re: Re: Extending object you don't create by merlyn
in thread Extending object you don't create by dcorbin

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