2 package Moose::Meta::Attribute::Native::Trait::Counter;
6 $VERSION = eval $VERSION;
7 our $AUTHORITY = 'cpan:STEVAN';
9 use Moose::Meta::Attribute::Native::MethodProvider::Counter;
11 with 'Moose::Meta::Attribute::Native::Trait';
13 has 'method_provider' => (
16 predicate => 'has_method_provider',
17 default => 'Moose::Meta::Attribute::Native::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);
50 Moose::Meta::Attribute::Native::Trait::Counter
58 traits => ['Counter'],
65 reset_counter => 'reset',
69 my $page = MyHomePage->new();
70 $page->inc_counter; # same as $page->counter( $page->counter + 1 );
71 $page->dec_counter; # same as $page->counter( $page->counter - 1 );
75 This module provides a simple counter attribute, which can be
76 incremented and decremented.
78 If your attribute definition does not include any of I<is>, I<isa>,
79 I<default> or I<handles> but does use the C<Counter> trait,
80 then this module applies defaults as in the L</SYNOPSIS>
81 above. This allows for a very basic counter definition:
83 has 'foo' => (traits => ['Counter']);
86 =head1 PROVIDED METHODS
88 These methods are implemented in
89 L<Moose::Meta::Attribute::Native::MethodProvider::Counter>. It is important to
90 note that all those methods do in place modification of the value stored in
97 Set the counter to the specified value.
101 Increments the value stored in this slot by 1. Providing an argument will
102 cause the counter to be increased by specified amount.
106 Decrements the value stored in this slot by 1. Providing an argument will
107 cause the counter to be increased by specified amount.
111 Resets the value stored in this slot to it's default value.
121 =item B<method_provider>
123 =item B<has_method_provider>
129 All complex software has bugs lurking in it, and this module is no
130 exception. If you find a bug please either email me, or add the bug
135 Stevan Little E<lt>stevan@iinteractive.comE<gt>
137 =head1 COPYRIGHT AND LICENSE
139 Copyright 2007-2009 by Infinity Interactive, Inc.
141 L<http://www.iinteractive.com>
143 This library is free software; you can redistribute it and/or modify
144 it under the same terms as Perl itself.