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.\" ========================================================================
.\"
.IX Title "MooseX::App::WritingPlugins 3pm"
.TH MooseX::App::WritingPlugins 3pm "2013-05-24" "perl v5.20.1" "User Contributed Perl Documentation"
.\" For nroff, turn off justification.  Always turn off hyphenation; it makes
.\" way too many mistakes in technical documents.
.if n .ad l
.nh
.SH "NAME"
MooseX::App::WritingPlugins \- Writing plugins for MooseX::App
.SH "SYNOPSIS"
.IX Header "SYNOPSIS"
.Vb 1
\& package MooseX::App::Plugin::MyPlugin;
\& 
\& use Moose::Role;
\& 
\& sub plugin_metaroles {
\&     my ($self,$class) = @_;
\&     return {
\&         class   => [\*(AqMooseX::App::Plugin::MyPlugin::Meta::Class\*(Aq],
\&     }
\& }
\& 
\& around \*(Aqinitialize_command_class\*(Aq => sub {
\&    ...
\& };
.Ve
.SH "DESCRIPTION"
.IX Header "DESCRIPTION"
Plugins are implemented as Moose roles and must reside in the
MooseX::App::Plugin::* namespace. Metaclasses can be altered via the 
\&'plugin_metaroles' callback method. Furthermore Moose method modifiers 
(around, after, before) can be used to alter the behaviour of MooseX::App or
its meta classes.
.SH "CALLBACKS"
.IX Header "CALLBACKS"
.SS "plugin_metaroles"
.IX Subsection "plugin_metaroles"
Optional callback method that should return a hash reference specifying which
metaroles will be applied to the class metaclass and its contained metaclasses 
and helper classes.
.PP
Each key should in turn point to an array reference of role names.
.PP
It accepts the following keys:
.IP "\(bu" 4
class
.IP "\(bu" 4
attribute
.IP "\(bu" 4
method
.IP "\(bu" 4
wrapped_method
.IP "\(bu" 4
instance
.IP "\(bu" 4
constructor
.IP "\(bu" 4
destructor
.IP "\(bu" 4
error
.SH "METACLASSES"
.IX Header "METACLASSES"
Most of MooseX-App behaviour is implemented in metaclass roles. When writing
plugins you will most likely need to alter/augument the behaviour of these
roles. Implementation details can be found in the respective packages.
.IP "\(bu" 4
MooseX::App::Meta::Role::Class::Base is applied to the base metaclass
.IP "\(bu" 4
MooseX::App::Meta::Role::Class::Command is applied to the command metaclass
.IP "\(bu" 4
MooseX::App::Meta::Role::Attribute::Option is applied to all attributes
in the base and command meta classes