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=encoding utf8
=head1 NAME
Mail::Message::Field::AddrGroup - A group of Mail::Message::Field::Address objects
=head1 INHERITANCE
Mail::Message::Field::AddrGroup
is a User::Identity::Collection::Emails
is a User::Identity::Collection
is a User::Identity::Item
=head1 SYNOPSIS
my $g = Mail::Message::Field::AddrGroup->new(name => 'name');
my $a = Mail::Message::Field::Address->new(...);
$g->addAddress($a);
my $f = Mail::Message::Field::Addresses->new;
$f->addGroup($g);
=head1 DESCRIPTION
An address group collects a set of e-mail addresses (in this case they
are L<Mail::Message::Field::Address|Mail::Message::Field::Address> objects).
Extends L<"DESCRIPTION" in User::Identity::Collection::Emails|User::Identity::Collection::Emails/"DESCRIPTION">.
=head1 OVERLOADED
Extends L<"OVERLOADED" in User::Identity::Collection::Emails|User::Identity::Collection::Emails/"OVERLOADED">.
=over 4
=item overload: B<""> stringification
Returns the L<string()|Mail::Message::Field::AddrGroup/"METHODS"> value.
Improves base, see L<User::Identity::Collection/"OVERLOADED">
=item overload: B<@{}> array dereference
Inherited, see L<User::Identity::Collection/"OVERLOADED">
=back
=head1 METHODS
Extends L<"METHODS" in User::Identity::Collection::Emails|User::Identity::Collection::Emails/"METHODS">.
=over 4
=item $obj-E<gt>B<string>()
Returns the address group as string. When no name is specified, it will
only be a comma separated list of addresses. With a name, the groups
name will be prepended and a semi-colon appended. When no addresses
where included and there is no name, then C<undef> is returned.
=back
=head2 Constructors
Extends L<"Constructors" in User::Identity::Collection::Emails|User::Identity::Collection::Emails/"Constructors">.
=over 4
=item $obj-E<gt>B<coerce>($object)
Coerce an C<$object> into a L<Mail::Message::Field::AddrGroup|Mail::Message::Field::AddrGroup>. Currently,
you can only coerce L<User::Identity::Collection::Emails|User::Identity::Collection::Emails> (which is
the base class for this one) into this one.
=item $class-E<gt>B<new>( [$name], %options )
Inherited, see L<User::Identity::Collection::Emails/"Constructors">
=back
=head2 Attributes
Extends L<"Attributes" in User::Identity::Collection::Emails|User::Identity::Collection::Emails/"Attributes">.
=over 4
=item $obj-E<gt>B<description>()
Inherited, see L<User::Identity::Item/"Attributes">
=item $obj-E<gt>B<itemType>()
Inherited, see L<User::Identity::Collection/"Attributes">
=item $obj-E<gt>B<name>( [$newname] )
Inherited, see L<User::Identity::Item/"Attributes">
=item $obj-E<gt>B<roles>()
Inherited, see L<User::Identity::Collection/"Attributes">
=back
=head2 Collections
Extends L<"Collections" in User::Identity::Collection::Emails|User::Identity::Collection::Emails/"Collections">.
=over 4
=item $obj-E<gt>B<add>($collection, $role)
Inherited, see L<User::Identity::Item/"Collections">
=item $obj-E<gt>B<addCollection>( $object | <[$type], %options> )
Inherited, see L<User::Identity::Item/"Collections">
=item $obj-E<gt>B<collection>($name)
Inherited, see L<User::Identity::Item/"Collections">
=item $obj-E<gt>B<parent>( [$parent] )
Inherited, see L<User::Identity::Item/"Collections">
=item $obj-E<gt>B<removeCollection>($object|$name)
Inherited, see L<User::Identity::Item/"Collections">
=item $any-E<gt>B<type>()
Inherited, see L<User::Identity::Item/"Collections">
=item $obj-E<gt>B<user>()
Inherited, see L<User::Identity::Item/"Collections">
=back
=head2 Maintaining roles
Extends L<"Maintaining roles" in User::Identity::Collection::Emails|User::Identity::Collection::Emails/"Maintaining roles">.
=over 4
=item $obj-E<gt>B<addRole>($role|([$name], %options))
Inherited, see L<User::Identity::Collection/"Maintaining roles">
=item $obj-E<gt>B<removeRole>($role|$name)
Inherited, see L<User::Identity::Collection/"Maintaining roles">
=item $obj-E<gt>B<renameRole>( <$role|$oldname>, $newname )
Inherited, see L<User::Identity::Collection/"Maintaining roles">
=item $obj-E<gt>B<sorted>()
Inherited, see L<User::Identity::Collection/"Maintaining roles">
=back
=head2 Searching
Extends L<"Searching" in User::Identity::Collection::Emails|User::Identity::Collection::Emails/"Searching">.
=over 4
=item $obj-E<gt>B<find>($name|CODE|undef)
Inherited, see L<User::Identity::Collection/"Searching">
=back
=head2 Addresses
=over 4
=item $obj-E<gt>B<addAddress>(STRING|$address|%options)
Add one e-mail address to the list which is maintained in the group. This
is a wrapper around L<addRole()|User::Identity::Collection/"Maintaining roles"> adding flexibility on how addresses
are specified. An C<$address> can be anything which is acceptable for
L<Mail::Message::Field::Address::coerce()|Mail::Message::Field::Address/"Constructors"> or a list of options which
will create such an object.
» example: of adding an address to an address group
my @data = (full_name => "Myself", address => 'me@tux.org');
$group->addAddress(@data);
my $addr = Mail::Message::Field::Address->new(@data);
$group->addAddress(@data);
my $ma = Mail::Address->new(...);
$group->addAddress($ma);
=item $obj-E<gt>B<addresses>()
Returns all addresses defined in this group. The addresses will be
ordered alphabetically to make automated testing possible: roles are
stored in a hash, so have an unpredictable order by default.
» example: getting all addresses from a group
my @addrs = $group->addresses;
my @addrs = map $_->address, $self->roles; #same
=back
=head2 Error handling
=head1 DIAGNOSTICS
=over 4
=item Error: Cannot coerce a $type into a Mail::Message::Field::AddrGroup
Cast by C<coerce()>
=item Error: cannot create a $type to add this to my collection.
Some options are specified to create a C<$type> object, which is native to
this collection. However, for some reason this failed.
Cast by C<addRole()>
=item Error: cannot load collection module for $type ($class): $err
Either the specified C<$type> does not exist, or that module named C<$class> returns
compilation errors. If the type as specified in the warning is not
the name of a package, you specified a nickname which was not defined.
Maybe you forgot the 'require' the package which defines the nickname.
Cast by C<addCollection()>
=item Error: cannot rename $from into $to: already exists.
Cast by C<renameRole()>
=item Error: cannot rename $from into $to: doesn't exist.
Cast by C<renameRole()>
=item Error: nvalid collection $name.
The collection with C<$name> does not exist and can not be created.
Cast by C<add()>
=item Error: this $object is not a collection.
Cast by C<addCollection()>
=item Error: wrong type of role for $collection: requires a $expect but got a $type.
Each C<$collection> groups sets of roles of one specific type (C<$expect>). You
cannot add objects of a different C<$type>.
Cast by C<addRole()>
=back
=head1 SEE ALSO
This module is part of Mail-Message version 3.019,
built on November 24, 2025. Website: F<http://perl.overmeer.net/CPAN/>
=head1 LICENSE
For contributors see file ChangeLog.
This software is copyright (c) 2001-2025 by Mark Overmeer.
This is free software; you can redistribute it and/or modify it under
the same terms as the Perl 5 programming language system itself.
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