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91 lines
3.2 KiB
Perl
91 lines
3.2 KiB
Perl
# File: EventDispatcher.pm
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#
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# Purpose: Registers event handlers and dispatches events to them.
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#
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# Note: PBot::EventDispatcher has no relation to PBot::EventQueue.
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# This Source Code Form is subject to the terms of the Mozilla Public
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# License, v. 2.0. If a copy of the MPL was not distributed with this
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# file, You can obtain one at http://mozilla.org/MPL/2.0/.
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package PBot::EventDispatcher;
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use parent 'PBot::Class';
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use PBot::Imports;
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sub initialize {
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my ($self, %conf) = @_;
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$self->{handlers} = {any => []};
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}
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sub register_handler {
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my ($self, $event_type, $sub, $package_override) = @_;
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my ($package) = caller(0);
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$package = $package_override if defined $package_override;
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my $info = "$package\-\>$event_type";
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$self->{pbot}->{logger}->log("Adding handler: $info\n") if $self->{pbot}->{registry}->get_value('eventdispatcher', 'debug');
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push @{$self->{handlers}->{$event_type}}, [$sub, $info];
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}
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sub remove_handler {
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my ($self, $event_type, $package_override) = @_;
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my ($package) = caller(0);
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$package = $package_override if defined $package_override;
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my $info = "$package\-\>$event_type";
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if (exists $self->{handlers}->{$event_type}) {
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for (my $i = 0; $i < @{$self->{handlers}->{$event_type}}; $i++) {
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my $ref = @{$self->{handlers}->{$event_type}}[$i];
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if ($info eq $ref->[1]) {
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$self->{pbot}->{logger}->log("Removing handler: $info\n") if $self->{pbot}->{registry}->get_value('eventdispatcher', 'debug');
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splice @{$self->{handlers}->{$event_type}}, $i--, 1;
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}
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}
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}
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}
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sub dispatch_event {
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my ($self, $event_type, $event_data) = @_;
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my $ret = undef;
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if (exists $self->{handlers}->{$event_type}) {
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for (my $i = 0; $i < @{$self->{handlers}->{$event_type}}; $i++) {
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my $ref = @{$self->{handlers}->{$event_type}}[$i];
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my ($handler, $info) = ($ref->[0], $ref->[1]);
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my $debug = $self->{pbot}->{registry}->get_value('eventdispatcher', 'debug') // 0;
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$self->{pbot}->{logger}->log("Dispatching $event_type to handler $info\n") if $debug > 1;
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eval { $ret = $handler->($event_type, $event_data); };
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if ($@) {
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chomp $@;
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$self->{pbot}->{logger}->log("Error in event handler: $@\n");
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#$self->{pbot}->{logger}->log("Removing handler.\n");
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#splice @{$self->{handlers}->{$event_type}}, $i--, 1;
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}
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return $ret if $ret;
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}
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}
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for (my $i = 0; $i < @{$self->{handlers}->{any}}; $i++) {
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my $ref = @{$self->{handlers}->{any}}[$i];
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my ($handler, $info) = ($ref->[0], $ref->[1]);
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$self->{pbot}->{logger}->log("Dispatching any to handler $info\n") if $self->{pbot}->{registry}->get_value('eventdispatcher', 'debug');
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eval { $ret = $handler->($event_type, $event_data); };
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if ($@) {
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chomp $@;
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$self->{pbot}->{logger}->log("Error in event handler: $@\n");
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#$self->{pbot}->{logger}->log("Removing handler.\n");
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#splice @{$self->{handlers}->{any}}, $i--, 1;
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}
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return $ret if $ret;
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}
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return $ret;
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}
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1;
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