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
56 use Moose::AttributeHelpers;
59 metaclass => 'Counter',
66 reset_counter => 'reset',
70 my $page = MyHomePage->new();
71 $page->inc_counter; # same as $page->counter( $page->counter + 1 );
72 $page->dec_counter; # same as $page->counter( $page->counter - 1 );
76 This module provides a simple counter attribute, which can be
77 incremented and decremented.
79 If your attribute definition does not include any of I<is>, I<isa>,
80 I<default> or I<handles> but does use the C<Counter> metaclass,
81 then this module applies defaults as in the L</SYNOPSIS>
82 above. This allows for a very basic counter definition:
84 has 'foo' => (metaclass => 'Counter');
93 =item B<method_provider>
95 =item B<has_method_provider>
99 =head1 PROVIDED METHODS
101 It is important to note that all those methods do in place
102 modification of the value stored in the attribute.
108 Set the counter to the specified value.
112 Increments the value stored in this slot by 1. Providing an argument will
113 cause the counter to be increased by specified amount.
117 Decrements the value stored in this slot by 1. Providing an argument will
118 cause the counter to be increased by specified amount.
122 Resets the value stored in this slot to it's default value.
128 All complex software has bugs lurking in it, and this module is no
129 exception. If you find a bug please either email me, or add the bug
134 Stevan Little E<lt>stevan@iinteractive.comE<gt>
136 =head1 COPYRIGHT AND LICENSE
138 Copyright 2007-2009 by Infinity Interactive, Inc.
140 L<http://www.iinteractive.com>
142 This library is free software; you can redistribute it and/or modify
143 it under the same terms as Perl itself.