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 package # hide me from search.cpan.org
43 Moose::Meta::Attribute::Custom::Trait::Counter;
44 sub register_implementation { 'Moose::AttributeHelpers::Trait::Counter' }
54 Moose::AttributeHelpers::Counter
60 use Moose::AttributeHelpers;
63 metaclass => 'Counter',
70 reset_counter => 'reset',
74 my $page = MyHomePage->new();
75 $page->inc_counter; # same as $page->counter( $page->counter + 1 );
76 $page->dec_counter; # same as $page->counter( $page->counter - 1 );
80 This module provides a simple counter attribute, which can be
81 incremented and decremented.
83 If your attribute definition does not include any of I<is>, I<isa>,
84 I<default> or I<handles> but does use the C<Counter> metaclass,
85 then this module applies defaults as in the L</SYNOPSIS>
86 above. This allows for a very basic counter definition:
88 has 'foo' => (metaclass => 'Counter');
97 =item B<method_provider>
99 =item B<has_method_provider>
103 =head1 PROVIDED METHODS
105 It is important to note that all those methods do in place
106 modification of the value stored in the attribute.
112 Set the counter to the specified value.
116 Increments the value stored in this slot by 1. Providing an argument will
117 cause the counter to be increased by specified amount.
121 Decrements the value stored in this slot by 1. Providing an argument will
122 cause the counter to be increased by specified amount.
126 Resets the value stored in this slot to it's default value.
132 All complex software has bugs lurking in it, and this module is no
133 exception. If you find a bug please either email me, or add the bug
138 Stevan Little E<lt>stevan@iinteractive.comE<gt>
140 =head1 COPYRIGHT AND LICENSE
142 Copyright 2007-2009 by Infinity Interactive, Inc.
144 L<http://www.iinteractive.com>
146 This library is free software; you can redistribute it and/or modify
147 it under the same terms as Perl itself.