=encoding utf8

=head1 NAME

Mail::Message::Field::Address - One e-mail address

=head1 INHERITANCE

 Mail::Message::Field::Address
   is a Mail::Identity
   is a User::Identity::Item

=head1 SYNOPSIS

 my $addr = Mail::Message::Field::Address->new(...);

 my $ui   = User::Identity->new(...);
 my $addr = Mail::Message::Field::Address->coerce($ui);

 my $mi   = Mail::Identity->new(...);
 my $addr = Mail::Message::Field::Address->coerce($mi);

 print $addr->address;
 print $addr->fullName;   # possibly unicode!
 print $addr->domain;

=head1 DESCRIPTION

Many header fields can contain e-mail addresses.  Each e-mail address
can be represented by an object of this class.  These objects will
handle interpretation and character set encoding and decoding for you.

Extends L<"DESCRIPTION" in Mail::Identity|Mail::Identity/"DESCRIPTION">.
 
=head1 OVERLOADED

=over 4

=item overload: B<boolean>

The object used as boolean will always return C<true>

=item overload: B<string $comparison>

Two address objects are the same when their email addresses are the
same.

=item overload: B<stringification>

When the object is used in string context, it will return the encoded
representation of the e-mail address, just like L<string()|Mail::Message::Field::Address/"Access to the content"> does.

=back

=head1 METHODS

Extends L<"METHODS" in Mail::Identity|Mail::Identity/"METHODS">.
 
=head2 Constructors

Extends L<"Constructors" in Mail::Identity|Mail::Identity/"Constructors">.
 
=over 4

=item $obj-E<gt>B<coerce>( <STRING|$object>, %options )

Try to coerce the $object into a C<Mail::Message::Field::Address>.
In case of a STRING, it is interpreted as an email address.

The %options are passed to the object creation, and overrule the values
found in the $object.  The result may be C<undef> or a newly created
object.  If the $object is already of the correct type, it is returned
unmodified.

The $object may currently be a L<Mail::Address|Mail::Address>, a L<Mail::Identity|Mail::Identity>, or
a L<User::Identity|User::Identity>.  In case of the latter, one of the user's addresses
is chosen at random.

=item Mail::Message::Field::Address-E<gt>B<new>( [NAME], OPTIONS )

Inherited, see L<Mail::Identity/"Constructors">

=item $obj-E<gt>B<parse>(STRING)

Parse the string for an address.  You never know whether one or more
addresses are specified on a line (often applications are wrong), therefore,
the STRING is first parsed for as many addresses as possible and then the
one is taken at random.

=back

=head2 Attributes

Extends L<"Attributes" in Mail::Identity|Mail::Identity/"Attributes">.
 
=over 4

=item $obj-E<gt>B<address>()

Inherited, see L<Mail::Identity/"Attributes">

=item $obj-E<gt>B<charset>()

Inherited, see L<Mail::Identity/"Attributes">

=item $obj-E<gt>B<comment>( [STRING] )

Inherited, see L<Mail::Identity/"Attributes">

=item $obj-E<gt>B<description>()

Inherited, see L<User::Identity::Item/"Attributes">

=item $obj-E<gt>B<domain>()

Inherited, see L<Mail::Identity/"Attributes">

=item $obj-E<gt>B<language>()

Inherited, see L<Mail::Identity/"Attributes">

=item $obj-E<gt>B<location>()

Inherited, see L<Mail::Identity/"Attributes">

=item $obj-E<gt>B<name>( [NEWNAME] )

Inherited, see L<User::Identity::Item/"Attributes">

=item $obj-E<gt>B<organization>()

Inherited, see L<Mail::Identity/"Attributes">

=item $obj-E<gt>B<phrase>()

Inherited, see L<Mail::Identity/"Attributes">

=item $obj-E<gt>B<username>()

Inherited, see L<Mail::Identity/"Attributes">

=back

=head2 Collections

Extends L<"Collections" in Mail::Identity|Mail::Identity/"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<find>(COLLECTION, ROLE)

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 $obj-E<gt>B<type>()

=item Mail::Message::Field::Address-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 Accessors

=over 4

=item $obj-E<gt>B<encoding>()

Character-set encoding, like 'q' and 'b', to be used when non-ascii
characters are to be transmitted.

=back

=head2 Access to the content

=over 4

=item $obj-E<gt>B<string>()

Returns an RFC compliant e-mail address, which will have character
set encoding if needed.  The objects are also overloaded to call
this method in string context.

example: 

 print $address->string;
 print $address;          # via overloading

=back

=head1 DIAGNOSTICS

=over 4

=item Error: $object is not a collection.

The first argument is an object, but not of a class which extends
L<User::Identity::Collection|User::Identity::Collection>.

=item Error: Cannot coerce a $type into a Mail::Message::Field::Address

When addresses are specified to be included in header fields, they may
be coerced into L<Mail::Message::Field::Address|Mail::Message::Field::Address> objects first.  What
you specify is not accepted as address specification.  This may be an
internal error.

=item Error: Cannot load collection module for $type ($class).

Either the specified $type does not exist, or that module named $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.

=item Error: Creation of a collection via $class failed.

The $class did compile, but it was not possible to create an object
of that class using the options you specified.

=item Error: Don't know what type of collection you want to add.

If you add a collection, it must either by a collection object or a
list of options which can be used to create a collection object.  In
the latter case, the type of collection must be specified.

=item Warning: No collection $name

The collection with $name does not exist and can not be created.

=back

=head1 SEE ALSO

This module is part of Mail-Box distribution version 2.111,
built on January 24, 2014. Website: F<http://perl.overmeer.net/mailbox/>

=head1 LICENSE

Copyrights 2001-2014 by [Mark Overmeer]. For other contributors see ChangeLog.

This program is free software; you can redistribute it and/or modify it
under the same terms as Perl itself.
See F<http://www.perl.com/perl/misc/Artistic.html>

