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package Desktop::Notify;

use warnings;
use strict;

use Net::DBus;
use File::Basename;
use Data::Dumper;

use Desktop::Notify::Notification;

=head1 NAME

Desktop::Notify - Communicate with the Desktop Notifications framework

=head1 VERSION

Version 0.03

=cut

our $VERSION = '0.03';

=head1 SYNOPSIS

    use Desktop::Notify;
    
    # Open a connection to the notification daemon
    my $notify = Desktop::Notify->new();
    
    # Create a notification to display
    my $notification = $notify->create(summary => 'Desktop::Notify',
                                       body => 'Hello, world!',
                                       timeout => 5000);
    
    # Display the notification
    $notification->show();
    
    # Close the notification later
    $notification->close();

=head1 DESCRIPTION

This module provides a Perl interface to the Desktop Notifications framework.

The framework allows applications to display pop-up notifications on an X
desktop.  This is implemented with two components: a daemon that displays the
notifications, and a client library used by applications to send notifications
to the daemon.  These components communicate through the DBus message bus
protocol.

More information is available from
L<http://trac.galago-project.org/wiki/DesktopNotifications>

This module serves the same purpose as C<libnotify>, in an object-oriented Perl
interface.  It is not, however, an interface to C<libnotify> itself, but a
separate implementation of the specification using L<Net::DBus>.

=head1 METHODS

=head2 new %opts

Connect to the notification daemon. %opts can include the following options:

=over

=item app_name

The application name to use for notifications. Default is C<basename($0)>

=item bus

The Net::DBus mesage bus to use. Default is to call Net::DBus->session, which
is usually where notification-daemon can be reached.

=item service

The DBus service name of the daemon. Default is
I<org.freedesktop.Notifications>.

=item objpath

The path to the notifications DBus object. Default is
I</org/freedesktop/Notifications>.

=item objiface

The DBus interface to access the notifications object as. Default is
I<org.freedesktop.Notifications>.

=back

=cut

sub new {
    my ($class, %opts) = @_;

    my $self = {};

    $self->{bus} = $opts{bus} || Net::DBus->session;
    $self->{service} = $self->{bus}
        ->get_service($opts{service} || 'org.freedesktop.Notifications');
    $self->{notify} = $self->{service}
        ->get_object($opts{objpath} || '/org/freedesktop/Notifications',
                     $opts{objiface} || 'org.freedesktop.Notifications');
    $self->{app_name} = $opts{app_name} || basename($0);
    $self->{notify}->connect_to_signal('NotificationClosed',
                                       sub {$self->_close_cb(@_)});

    bless $self, $class;
}

=head2 create %params

Creates a new notification object that can be displayed later. This will return
a L<Desktop::Notify::Notification> object; see that module for information
about using it.

=cut

sub create {
    my ($self, %params) = @_;

    return new Desktop::Notify::Notification($self, %params);
}

sub _register_notification {
    my ($self, $n) = @_;
    $self->{notes}->{$n->{id}} = $n;
}

sub _close_cb {
    my ($self, $nid) = @_;
    print __PACKAGE__, ": notification closed\n";
    if ($self->{close_callback})
    {
        print "invoking callback\n";
        $self->{close_callback}->($self->{notes}->{$nid});
    }
    delete $self->{notes}->{$nid};
}

=head2 close_callback $coderef

Sets a user-specified function to be called whenever a notification is closed.
It will be called with one argument, which is the Notification object that was
just closed.

=cut

sub close_callback {
    my ($self, $cb) = @_;

    print "callback is $cb\n";
    $self->{close_callback} = $cb;
}

=head1 AUTHOR

Stephen Cavilia, C<< <sac at atomicradi.us> >>

=head1 SEE ALSO

L<Net::DBus>

L<http://www.galago-project.org/specs/notification/index.php>

L<http://www.galago-project.org/downloads.php>

=head1 BUGS

Please report any bugs or feature requests to
C<bug-desktop-notify at rt.cpan.org>, or through the web interface at
L<http://rt.cpan.org/NoAuth/ReportBug.html?Queue=Desktop-Notify>.
I will be notified, and then you'll automatically be notified of progress on
your bug as I make changes.

=head1 SUPPORT

You can find documentation for this module with the perldoc command.

    perldoc Desktop::Notify

You can also look for information at:

=over 4

=item * AnnoCPAN: Annotated CPAN documentation

L<http://annocpan.org/dist/Desktop-Notify>

=item * CPAN Ratings

L<http://cpanratings.perl.org/d/Desktop-Notify>

=item * RT: CPAN's request tracker

L<http://rt.cpan.org/NoAuth/Bugs.html?Dist=Desktop-Notify>

=item * Search CPAN

L<http://search.cpan.org/dist/Desktop-Notify>

=back

=head1 ACKNOWLEDGEMENTS

=head1 COPYRIGHT & LICENSE

Copyright 2007 Stephen Cavilia, all rights reserved.

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

=cut

1; # End of Desktop::Notify