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package Net::XMPP2::Event; |
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=head1 NAME |
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Net::XMPP2::Event - A event handler class |
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=head1 SYNOPSIS |
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|
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package foo; |
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use Net::XMPP2::Event; |
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|
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our @ISA = qw/Net::XMPP2::Event/; |
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|
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package main; |
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my $o = foo->new; |
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$o->reg_cb (foo => sub { ...; 1 }); |
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$o->event (foo => 1, 2, 3); |
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|
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=head1 DESCRIPTION |
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|
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This module is just a small helper module for the connection |
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and client classes. |
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|
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You may only derive from this package. |
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=head2 reg_cb ($eventname1, $cb1, [$eventname2, $cb2, ...]) |
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This method registers a callback C<$cb1> for the event with the |
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name C<$eventname1>. You can also pass multiple of these eventname => callback |
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pairs. |
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|
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The return value will be an ID that represents the set of callbacks you have installed. |
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Call C<unreg_cb> with that ID to remove those callbacks again. |
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|
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To see a documentation of emitted events please take a look at the EVENTS section |
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in the classes that inherit from this one. |
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=cut |
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sub reg_cb { |
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my ($self, %regs) = @_; |
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$self->{id}++; |
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for my $cmd (keys %regs) { |
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push @{$self->{events}->{lc $cmd}}, [$self->{id}, $regs{$cmd}] |
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} |
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$self->{id} |
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} |
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=head2 unreg_cb ($id) |
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Removes the set C<$id> of registered callbacks. C<$id> is the |
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return value of a C<reg_cb> call. |
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=cut |
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sub unreg_cb { |
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my ($self, $id) = @_; |
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my $set = delete $self->{ids}->{$id}; |
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for my $key (keys %{$self->{events}}) { |
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@{$self->{events}->{$key}} = |
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grep { |
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$_->[0] ne $id |
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} @{$self->{events}->{$key}}; |
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} |
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} |
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=head2 event ($eventname, @args) |
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Emits the event C<$eventname> and passes the arguments C<@args>. |
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=cut |
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sub event { |
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my ($self, $ev, @arg) = @_; |
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my $nxt = []; |
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my $handled; |
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for (@{$self->{events}->{lc $ev}}) { |
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$_->[1]->($self, @arg) and push @$nxt, $_; |
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} |
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$self->{events}->{lc $ev} = $nxt; |
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} |
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=head1 AUTHOR |
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Robin Redeker, C<< <elmex at ta-sa.org> >> |
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=head1 COPYRIGHT & LICENSE |
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Copyright 2007 Robin Redeker, all rights reserved. |
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This program is free software; you can redistribute it and/or modify it |
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under the same terms as Perl itself. |
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=cut |
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1; |
