NAME
Reflex::Trait::Watched - Automatically watch Reflex objects.
VERSION
This document describes version 0.100, released on April 02, 2017.
SYNOPSIS
# Not a complete program. This example comes from Reflex's main # synopsis.
has clock => (
isa => 'Reflex::Interval',
is => 'rw',
traits => [ 'Reflex::Trait::Watched' ],
setup => { interval => 1, auto_repeat => 1 },
);DESCRIPTION
Reflex::Trait::Watched modifies a member to automatically watch() any Reflex::Base object stored within it. In the SYNOPSIS, storing a Reflex::Interval in the clock() attribute allows the owner to watch the timer's events.
This trait is a bit of Moose-based syntactic sugar for Reflex::Base's more explict watch() and watch_role() methods.
setup
The "setup" option provides default constructor parameters for the attribute. In the above example, clock() will by default contain
Reflex::Interval->new(interval => 1, auto_repeat => 1);In other words, it will emit the Reflex::Interval event ("tick") once per second until destroyed.
role
Attribute events are mapped to the owner's methods using Reflex's role-based callback convention. For example, Reflex will look for an on_clock_tick() method to handle "tick" events from an object with the 'clock" role.
The "role" option allows roles to be set or overridden. A watcher attribute's name is its default role.
Declarative Syntax
Reflex::Trait::Watched exports a declarative watches() function, which acts almost identically to Moose's has() but with a couple convenient defaults: The Watched trait is added, and the attribute is given "rw" access by default.
CAVEATS
The "setup" option is a work-around for unfortunate default timing. It will be deprecated if default can be made to work instead.
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
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