package PDF::Template::Container::PdfTemplate;

use strict;

BEGIN {
    use vars qw(@ISA);
    @ISA = qw(PDF::Template::Container);

    use PDF::Template::Container;
}

sub new
{
    my $class = shift;
    my $self = $class->SUPER::new(@_);

    # The default color is black
    $self->{COLOR} = '0,0,0' unless exists $self->{COLOR};

    return $self;
}

sub should_render
{
#    my $self = shift;
#    my ($context) = @_;

    return 1;
}

sub render
{
    my $self = shift;
    my ($context) = @_;

    $self->enter_scope($context);

    my $child_success = $self->SUPER::render($context)
        if $self->should_render($context);

    $self->exit_scope($context);

    return $child_success;
}

sub preprocess
{
    my $self = shift;
    my ($context) = @_;

    $self->enter_scope($context);

    $context->{PARAM_MAP}[0]{__LAST_PAGE__} = 0;
    unless ($context->get($self, 'NOLASTPAGE'))
    {
        my $old_PDF = $context->{PDF};

        my $p = pdflib_pl::PDF_new();
        pdflib_pl::PDF_open_file($p, '') == -1 &&
            die "pdflib_pl::PDF_open_file could not open buffer.", $/;

        $context->{PDF} = $p;

        $context->{CALC_LAST_PAGE} = 1;
        $self->SUPER::render($context);
        $context->{CALC_LAST_PAGE} = 0;

        pdflib_pl::PDF_close($p);

        $self->reset;
        $context->delete_fonts;

        $context->{PDF} = $old_PDF;
        $context->{PARAM_MAP}[0]{__LAST_PAGE__} = $context->{PARAM_MAP}[0]{__PAGE__} - 1;
        $context->{PARAM_MAP}[0]{__PAGE__} = 1;
        $context->{PARAM_MAP}[0]{__PAGEDEF__} = 0;
    }

    $self->exit_scope($context, 1);

    return 1;
}

1;
__END__

=head1 NAME

PDF::Template::Container::PdfTemplate

=head1 PURPOSE

The root node

=head1 NODE NAME

PDFTEMPLATE

=head1 INHERITANCE

PDF::Template::Container

=head1 ATTRIBUTES

=over 4

=item * NOLASTPAGE - If this is set to true, then __LAST_PAGE__ will not be
calculated. This can provide a decent speed improvement.

=back 4

=head1 CHILDREN

None

=head1 AFFECTS

Nothing

=head1 DEPENDENCIES

None

=head1 USAGE

  <pdftemplate>
    ... Children here ...
  </pdftemplate>

=head1 AUTHOR

Rob Kinyon (rob.kinyon@gmail.com)

=head1 SEE ALSO

=cut