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package DBIx::HTML::LinkedMenus; |
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# Name: |
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# DBIx::HTML::LinkedMenus |
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# |
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# Purpose: |
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# Convert db data to 2 linked HTML popup menus. |
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# |
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# Documentation: |
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# POD-style documentation is at the end. Extract it with pod2html.*. |
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# |
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# Note: |
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# o tab = 4 spaces || die |
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# |
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# Author: |
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# Ron Savage |
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# Home page: http://savage.net.au/index.html |
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use strict; |
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use warnings; |
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require 5.005_62; |
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require Exporter; |
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use Carp; |
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our @ISA = qw(Exporter); |
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# Items to export into callers namespace by default. Note: do not export |
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# names by default without a very good reason. Use EXPORT_OK instead. |
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# Do not simply export all your public functions/methods/constants. |
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# This allows declaration use Image::MagickWrapper ':all'; |
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# If you do not need this, moving things directly into @EXPORT or @EXPORT_OK |
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# will save memory. |
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our %EXPORT_TAGS = ( 'all' => [ qw( |
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) ] ); |
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our @EXPORT_OK = ( @{ $EXPORT_TAGS{'all'} } ); |
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our @EXPORT = qw( |
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); |
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our $VERSION = '1.10'; |
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# ----------------------------------------------- |
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# Preloaded methods go here. |
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# ----------------------------------------------- |
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# Encapsulated class data. |
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{ |
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my(%_attr_data) = |
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( # Alphabetical order. |
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_base_menu_name => 'dbix_base_menu', |
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_base_prompt => undef, |
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_base_value => undef, |
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_base_sql => '', |
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_dbh => '', |
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_form_name => 'dbix_form', |
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_linked_menu_name => 'dbix_linked_menu', |
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_linked_prompt => undef, |
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_linked_value => undef, |
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_linked_sql => '', |
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); |
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sub _default_for |
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{ |
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my($self, $attr_name) = @_; |
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$_attr_data{$attr_name}; |
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} |
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sub _read_data |
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{ |
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my($self) = @_; |
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my($base_sth) = $$self{'_dbh'} -> prepare($$self{'_base_sql'}); |
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my($linked_sth) = $$self{'_dbh'} -> prepare($$self{'_linked_sql'}); |
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$$self{'_data'} = {}; |
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my($base_order) = 0; |
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$base_sth -> execute(); |
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my($base_data, $linked_order, $linked_data); |
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while ($base_data = $base_sth -> fetch() ) |
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{ |
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$base_order++; |
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$linked_sth -> execute($$base_data[2]); |
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$linked_order = 0; |
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while ($linked_data = $linked_sth -> fetch() ) |
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{ |
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$linked_order++; |
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if ($linked_order == 1) |
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{ |
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$$self{'_data'}{$$base_data[0]} = |
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{ |
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link => {}, |
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order => $base_order, |
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value => $$base_data[1], |
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}; |
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} |
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$$self{'_data'}{$$base_data[0]}{'link'}{$$linked_data[0]} = |
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{ |
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order => $linked_order, |
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value => $$linked_data[1], |
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}; |
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} |
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} |
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$$self{'_size'} = $base_order; |
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122
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} # End of _read_data. |
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sub _standard_keys |
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{ |
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sort keys %_attr_data; |
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} |
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sub _validate_options |
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{ |
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my($self) = @_; |
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croak(__PACKAGE__ . ". You must supply values for these parameters: dbh, base_sql, linked_sql, base_menu_name and linked_menu_name") if (! $$self{'_dbh'} || ! $$self{'_base_sql'} || ! $$self{'_linked_sql'} || ! $$self{'_base_menu_name'} || ! $$self{'_linked_menu_name'}); |
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# # Reset empty parameters to their defaults. |
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# # This could be optional, depending on another option. |
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# |
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# for my $attr_name ($self -> _standard_keys() ) |
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# { |
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# $$self{$attr_name} = $self -> _default_for($attr_name) if (! $$self{$attr_name}); |
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# } |
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143
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} # End of _validate_options. |
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145
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} # End of Encapsulated class data. |
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147
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# ----------------------------------------------- |
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sub get |
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{ |
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my($self, $base_id, $link_id) = @_; |
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my(@result) = (); |
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if (exists($$self{'_data'}{$base_id}) && exists($$self{'_data'}{$base_id}{'link'}{$link_id}) ) |
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{ |
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@result = ($$self{'_data'}{$base_id}{'value'}, $$self{'_data'}{$base_id}{'link'}{$link_id}{'value'}); |
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} |
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@result; |
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161
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} # End of get. |
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# ----------------------------------------------- |
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sub html_for_base_menu |
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{ |
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my($self) = @_; |
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""; |
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} # End of html_for_base_menu. |
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# ----------------------------------------------- |
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sub html_for_linked_menu |
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{ |
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my($self) = @_; |
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""; |
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} # End of html_for_linked_menu. |
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# ----------------------------------------------- |
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185
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sub javascript_for_db() |
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{ |
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my($self) = @_; |
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my(@code) = <
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271
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272
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EOS |
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join("\n", @code); |
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} # End of javascript_for_db. |
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# ----------------------------------------------- |
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280
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sub javascript_for_init_menu |
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{ |
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my($self) = @_; |
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my(@code) = <
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285
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292
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293
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EOS |
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join("\n", @code); |
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297
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} # End of javascript_for_init_menu. |
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# ----------------------------------------------- |
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301
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sub javascript_for_on_load |
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{ |
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my($self) = @_; |
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305
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('onLoad' => 'dbix_init()'); |
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307
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} # End of javascript_for_on_load. |
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309
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# ----------------------------------------------- |
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311
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sub new |
312
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{ |
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my($caller, %arg) = @_; |
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my($caller_is_obj) = ref($caller); |
315
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my($class) = $caller_is_obj || $caller; |
316
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my($self) = bless({}, $class); |
317
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318
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for my $attr_name ($self -> _standard_keys() ) |
319
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{ |
320
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my($arg_name) = $attr_name =~ /^_(.*)/; |
321
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322
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if (exists($arg{$arg_name}) ) |
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|
|
|
|
|
|
{ |
324
|
0
|
|
|
|
|
|
$$self{$attr_name} = $arg{$arg_name}; |
325
|
|
|
|
|
|
|
} |
326
|
|
|
|
|
|
|
else |
327
|
|
|
|
|
|
|
{ |
328
|
0
|
|
|
|
|
|
$$self{$attr_name} = $self -> _default_for($attr_name); |
329
|
|
|
|
|
|
|
} |
330
|
|
|
|
|
|
|
} |
331
|
|
|
|
|
|
|
|
332
|
0
|
|
|
|
|
|
$self -> _validate_options(); |
333
|
0
|
|
|
|
|
|
$self -> _read_data(); |
334
|
|
|
|
|
|
|
|
335
|
0
|
0
|
|
|
|
|
$self = undef if (! $$self{'_size'}); |
336
|
|
|
|
|
|
|
|
337
|
0
|
|
|
|
|
|
return $self; |
338
|
|
|
|
|
|
|
|
339
|
|
|
|
|
|
|
} # End of new. |
340
|
|
|
|
|
|
|
|
341
|
|
|
|
|
|
|
# ----------------------------------------------- |
342
|
|
|
|
|
|
|
|
343
|
|
|
|
|
|
|
sub size |
344
|
|
|
|
|
|
|
{ |
345
|
0
|
|
|
0
|
1
|
|
my($self) = @_; |
346
|
|
|
|
|
|
|
|
347
|
0
|
|
|
|
|
|
$$self{'_size'}; |
348
|
|
|
|
|
|
|
|
349
|
|
|
|
|
|
|
} # End of size. |
350
|
|
|
|
|
|
|
|
351
|
|
|
|
|
|
|
# ----------------------------------------------- |
352
|
|
|
|
|
|
|
|
353
|
|
|
|
|
|
|
1; |
354
|
|
|
|
|
|
|
|
355
|
|
|
|
|
|
|
__END__ |