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Reflex-0.100
River stage one • 7 direct dependents • 7 total dependents
13 ++
/ Reflex::Callback::Method

NAME

Reflex::Callback::Method - Callback adapter for class and object methods

VERSION

This document describes version 0.100, released on April 02, 2017.

SYNOPSIS

Used within Reflex:

        package MethodHandler;
        use Moose;
        extends 'Reflex::Base';
        use Reflex::Callbacks qw(cb_method);
        use ExampleHelpers qw(eg_say);

        has ticker => (
                isa     => 'Maybe[Reflex::Interval]',
                is      => 'rw',
        );

        sub BUILD {
                my $self = shift;
                $self->ticker(
                        Reflex::Interval->new(
                                interval    => 1 + rand(),
                                auto_repeat => 1,
                                on_tick     => cb_method($self, "callback"),
                        )
                );
        }

        sub callback {
                eg_say("method callback triggered");
        }

        MethodHandler->new()->run_all();

Low-level usage:

        {
                package Object;
                use Moose;

                sub callback {
                        my ($self, $arg) = @_;
                        print "$self says: hello, $arg->{name}\n";
                }
        }

        my $object = Object->new();

        my $cb = Reflex::Callback::Method->new(
                object      => $object,
                method_name => "callback"
        );

        $cb->deliver(greet => { name => "world" });

DESCRIPTION

Reflex::Callback::Method maps the generic Reflex::Callback interface to object and class method callbacks. Reflex::Callbacks' cb_method() function simplifies callback creation. cb_object(), also supplied by Reflex::Callbacks, is shorthand for setting several callbacks at once on a single object or class. Other syntactic sweeteners are in development.

new

Reflex::Callback::Method's constructor takes two named parameters. "object" and "method_name" define the object and method that will be invoked to handle the callback.

Despite its name, "object" may also handle class names. In these cases, "method_name" will be invoked as a class method rather than on a particular instance of the class.

deliver

Reflex::Callback::Method's deliver() method invokes the object (or class) and method as defined during the callback's construction. deliver() takes two positional parameters: an event name (which is not currently used for method callbacks), and a hashref of named parameters to be passed to the callback.

deliver() returns whatever the coderef does.

SEE ALSO

Please see those modules/websites for more information related to this module.

BUGS AND LIMITATIONS

You can make new bug reports, and view existing ones, through the web interface at http://rt.cpan.org/Public/Dist/Display.html?Name=Reflex.

AUTHOR

Rocco Caputo <rcaputo@cpan.org>

COPYRIGHT AND LICENSE

This software is copyright (c) 2017 by Rocco Caputo.

This is free software; you can redistribute it and/or modify it under the same terms as the Perl 5 programming language system itself.

AVAILABILITY

The latest version of this module is available from the Comprehensive Perl Archive Network (CPAN). Visit http://www.perl.com/CPAN/ to find a CPAN site near you, or see https://metacpan.org/module/Reflex/.

DISCLAIMER OF WARRANTY

BECAUSE THIS SOFTWARE IS LICENSED FREE OF CHARGE, THERE IS NO WARRANTY FOR THE SOFTWARE, TO THE EXTENT PERMITTED BY APPLICABLE LAW. EXCEPT WHEN OTHERWISE STATED IN WRITING THE COPYRIGHT HOLDERS AND/OR OTHER PARTIES PROVIDE THE SOFTWARE "AS IS" WITHOUT WARRANTY OF ANY KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. THE ENTIRE RISK AS TO THE QUALITY AND PERFORMANCE OF THE SOFTWARE IS WITH YOU. SHOULD THE SOFTWARE PROVE DEFECTIVE, YOU ASSUME THE COST OF ALL NECESSARY SERVICING, REPAIR, OR CORRECTION.

IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MAY MODIFY AND/OR REDISTRIBUTE THE SOFTWARE AS PERMITTED BY THE ABOVE LICENCE, BE LIABLE TO YOU FOR DAMAGES, INCLUDING ANY GENERAL, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES ARISING OUT OF THE USE OR INABILITY TO USE THE SOFTWARE (INCLUDING BUT NOT LIMITED TO LOSS OF DATA OR DATA BEING RENDERED INACCURATE OR LOSSES SUSTAINED BY YOU OR THIRD PARTIES OR A FAILURE OF THE SOFTWARE TO OPERATE WITH ANY OTHER SOFTWARE), EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES.