I'm trying to abstract a piece of code I often run into something that works like this:

package MySample;
sub build_dropdown
{
    #     build_dropdown(  \$DataObject , 'key_function', 'text_functi
+on', 'Select A Header', 'preselectedValue' );
    my @xml;
    if ( $_[3] )
    {
        push @xml , qq{<option value="">$_[3]</option>};
        push @xml , qq{<option value="">==========</option>};
    }
    foreach my $id ( $_[0]->{$_[1]}() )
    {
        my         $sel = ( $id == $_[4] ) ? ' selected' : '';
        push     @xml , ("<option value=\"$id\"${sel}>" . $_[0]->{$_[2
+]}($id) . '</option>');
    }
    return join "\n" , @xml;
}
[download]

so, given an object like this:

package myBox;

sub new 
{
    my  $proto                 = $_[0];
    my  $class                 = ref($proto) || $proto;
    my  $self                  = bless ( {} , $class );
        $self->{'__keys'}     = { '1' => 'a', '2' => 'b', '3' => 'c', 
+'4' => 'd', '5' => 'e' };
    return $self;
}
sub get__keys
{
    return keys %{ $_[0]->{'__keys'} };
}

sub get__textforkey
{
    return $_[0]->{'__keys'}{$_[1]} ;
}
1;
[download]

I could just do this

my         $box = myBox->new();
print     &HtmlDropDowns::build_dropdown( $box , 'get__keys' , 'get__t
+extforkey' , 'select a header' , 2 );
[download]

unfortunately, I can't scope/write the function calls right . can anyone help me with this?

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