2 package Moose::AttributeHelpers::Trait::Counter;
6 $VERSION = eval $VERSION;
7 our $AUTHORITY = 'cpan:STEVAN';
9 use Moose::AttributeHelpers::MethodProvider::Counter;
11 with 'Moose::AttributeHelpers::Trait::Base';
13 has 'method_provider' => (
16 predicate => 'has_method_provider',
17 default => 'Moose::AttributeHelpers::MethodProvider::Counter',
20 sub _default_default { 0 }
21 sub _default_is { 'ro' }
22 sub _helper_type { 'Num' }
24 after '_check_handles_values' => sub {
26 my $handles = $self->handles;
28 unless ( scalar keys %$handles ) {
29 my $method_constructors = $self->method_constructors;
30 my $attr_name = $self->name;
32 foreach my $method ( keys %$method_constructors ) {
33 $handles->{ $method . '_' . $attr_name } = $method;
36 $self->_set_handles($handles);
42 # register the alias ...
43 package # hide me from search.cpan.org
44 Moose::Meta::Attribute::Custom::Trait::Counter;
45 sub register_implementation { 'Moose::AttributeHelpers::Trait::Counter' }
55 Moose::AttributeHelpers::Counter
61 use Moose::AttributeHelpers;
64 metaclass => 'Counter',
71 reset_counter => 'reset',
75 my $page = MyHomePage->new();
76 $page->inc_counter; # same as $page->counter( $page->counter + 1 );
77 $page->dec_counter; # same as $page->counter( $page->counter - 1 );
81 This module provides a simple counter attribute, which can be
82 incremented and decremented.
84 If your attribute definition does not include any of I<is>, I<isa>,
85 I<default> or I<handles> but does use the C<Counter> metaclass,
86 then this module applies defaults as in the L</SYNOPSIS>
87 above. This allows for a very basic counter definition:
89 has 'foo' => (metaclass => 'Counter');
98 =item B<method_provider>
100 =item B<has_method_provider>
104 =head1 PROVIDED METHODS
106 It is important to note that all those methods do in place
107 modification of the value stored in the attribute.
113 Set the counter to the specified value.
117 Increments the value stored in this slot by 1. Providing an argument will
118 cause the counter to be increased by specified amount.
122 Decrements the value stored in this slot by 1. Providing an argument will
123 cause the counter to be increased by specified amount.
127 Resets the value stored in this slot to it's default value.
133 All complex software has bugs lurking in it, and this module is no
134 exception. If you find a bug please either email me, or add the bug
139 Stevan Little E<lt>stevan@iinteractive.comE<gt>
141 =head1 COPYRIGHT AND LICENSE
143 Copyright 2007-2009 by Infinity Interactive, Inc.
145 L<http://www.iinteractive.com>
147 This library is free software; you can redistribute it and/or modify
148 it under the same terms as Perl itself.