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package WWW::Slides::Talk; |
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{ |
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4985
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use warnings; |
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36
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# use diagnostics; |
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use strict; |
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use Carp; |
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use version; our $VERSION = qv('0.0.5'); |
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1532
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use Object::InsideOut; |
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74787
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1187
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use IO::Socket; |
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30260
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1481
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use IO::Select; |
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1680
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use English qw( -no_match_vars ); |
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1073
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use WWW::Slides::Attendee; |
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use WWW::Slides::SlideTracker; |
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# Other recommended modules (uncomment to use): |
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# use IO::Prompt; |
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# use Perl6::Export; |
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# use Perl6::Slurp; |
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# use Perl6::Say; |
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# use Regexp::Autoflags; |
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# use Readonly; |
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25
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#-------------------------------------------------------------------- |
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# |
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# Member variables and initialisation |
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# |
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my @controller : Field # Entry point for talk control |
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: Std(Name => 'controller') |
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: Arg(Name => 'controller', Mandatory => 1); |
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33
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my @door : Field # Entry point for talk "listening" |
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: Std(Name => 'door', Private => 1); |
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my @port : Field # Port used for talk TCP socket |
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: Std(Name => 'port', Private => 1) |
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: Arg(Name => 'port', Mandatory => 1); |
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my @attendees : Field # List of registered attendees |
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: Std(Name => 'attendees', Private => 1); |
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my @must_book : Field # Should attendee book before entering? |
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: Std(Name => 'must_book', Private => 1) : Get(Name => 'must_book') |
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: Arg(Name => 'must_book', Default => 0); |
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my @booked : Field # Track expected attendees |
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: Std(Name => 'booked', Private => 1) |
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: Get(Name => 'booked', Private => 1); |
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my @accepts_detaches : Field # Attendees can detach |
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: Std(Name => 'accepts_detaches', Private => 1) |
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: Get(Name => 'accepts_detaches') |
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: Arg(Name => 'accepts_detaches', Default => 1); |
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51
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my @slide_show : Field # Where we're getting the slides from |
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: Std(Name => 'slide_show', Private => 1) |
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: Get(Name => 'slide_show', Private => 1) |
54
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: Arg(Name => 'slide_show', Mandatory => 1); |
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my @tracker : Field # Track current slide |
56
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: Std(Name => 'tracker', Private => 1) |
57
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: Get(Name => 'tracker', Private => 1); |
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59
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my @ping_interval : Field # Anti-timeout |
60
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: Std(Name => 'ping_interval') |
61
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: Arg(Name => 'ping_interval', Default => 60); |
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my @alive : Field # Is this talk still alive? |
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: Std(Name => 'alive', Private => 1) |
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: Get(Name => 'is_alive', Private => 1); |
65
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my @selector : Field # For select() operations |
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: Std(Name => 'selector', Private => 1); |
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68
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my @logger : Field # Where to send any log message |
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: Std(Name => 'logger', Private => 1) : Get(Name => 'logger') |
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: Arg(Name => 'logger'); |
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72
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sub _init : Init { |
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0
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my $self = shift; |
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0
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0
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my ($args) = @_; |
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76
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# Ensure there's a logger, even a fake one |
77
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0
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0
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0
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if (! $self->logger()) { |
78
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0
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0
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require WWW::Slides::BasicLogger; |
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0
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0
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$self->set_logger(WWW::Slides::BasicLogger->new(fake => 1)); |
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} |
81
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82
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0
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0
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0
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my $door = IO::Socket::INET->new( |
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Proto => 'tcp', |
84
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LocalPort => $self->get_port(), |
85
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ReuseAddr => 1, |
86
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Listen => 3, |
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) |
88
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or croak "could not create door socket on port ", |
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$self->get_port(); |
90
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0
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0
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$self->set_door($door); |
91
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92
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0
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0
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my $selector = IO::Select->new($door); |
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0
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0
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$self->set_selector($selector); |
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95
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0
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0
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my $controller = $self->get_controller(); |
96
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0
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0
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$controller->set_selector($selector); |
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98
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0
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0
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$self->set_attendees({}); # Empty talk at the beginning |
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0
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0
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0
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$self->set_booked({}) if $self->must_book(); |
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101
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0
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0
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$self->set_tracker( # Auto-places on the first slide |
102
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WWW::Slides::SlideTracker->new( |
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slide_show => $self->get_slide_show() |
104
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) |
105
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); |
106
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107
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0
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0
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$self->set_alive(1); |
108
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109
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110
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0
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0
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return; |
111
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1
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1
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523
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} ## end sub _init : |
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1
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1
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1
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4
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112
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#--------------------------------------------------------------------- |
113
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114
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sub run { # main loop function |
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0
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0
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0
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my $self = shift; |
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0
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my $door = $self->get_door(); |
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0
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my $selector = $self->get_selector(); |
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0
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my $controller = $self->get_controller(); |
119
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120
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0
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$self->logger()->info('run(): entering main loop'); |
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0
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0
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while ($self->is_alive() && $controller->is_alive()) { |
122
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0
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my @ready = $selector->can_read($self->get_ping_interval()); |
123
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0
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$self->ping(); |
124
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125
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0
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for my $fh (@ready) { # Do all the work |
126
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0
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0
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if ($controller->owns($fh)) { |
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0
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127
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0
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$self->execute_commands($fh); |
128
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} |
129
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elsif ($fh == $door) { |
130
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0
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$self->welcome_attendee(); |
131
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} |
132
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else { |
133
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0
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$self->check_attendee($self->get_attendee($fh)); |
134
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} |
135
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} ## end for my $fh (@ready) |
136
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} ## end while ($self->is_alive() ... |
137
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138
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0
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0
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$self->logger()->info('run() exited from loop, talk ', |
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0
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139
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($self->is_alive() ? 'alive' : 'dead'), |
140
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', controller ', |
141
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($controller->is_alive() ? 'alive' : 'dead') |
142
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); |
143
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0
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$self->cleanup(); |
144
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145
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0
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return; |
146
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} ## end sub run |
147
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148
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sub cleanup : Private { |
149
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0
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0
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my $self = shift; |
150
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0
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0
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$self->logger()->debug('cleanup()'); |
151
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0
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0
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$self->remove_attendee($_) for $self->get_all_attendees(); |
152
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0
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0
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return; |
153
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1
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1
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533
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} |
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1
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2
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1
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4
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154
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155
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# Attendees selection |
156
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sub get_attached_attendees { |
157
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0
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0
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0
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my $self = shift; |
158
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0
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return grep { $_->is_attached() } $self->get_all_attendees(); |
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0
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159
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} |
160
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161
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sub get_all_attendees { |
162
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0
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0
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0
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my $self = shift; |
163
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0
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return values %{$self->get_attendees()}; |
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0
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164
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} |
165
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166
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sub resolve_attendees { |
167
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0
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0
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0
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my $self = shift; |
168
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0
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0
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return map { ref $_ ? $_ : $self->get_attendee($_) } @_; |
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0
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169
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} |
170
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171
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sub get_attendee { |
172
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0
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0
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0
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my $self = shift; |
173
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0
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my ($id) = @_; |
174
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175
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0
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my $attendees = $self->get_attendees(); |
176
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0
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0
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if (ref $id) { # It's a filehandle |
177
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0
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0
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die "unexpected attendee's filehandle [$id]" |
178
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unless exists $attendees->{$id}; |
179
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0
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return $attendees->{$id}; |
180
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} |
181
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182
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# It's an external identifier |
183
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0
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for my $attendee (values %$attendees) { |
184
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0
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0
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return $attendee if $attendee->id() eq $id; |
185
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} |
186
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0
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die "could not find id $id"; |
187
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} ## end sub get_attendee |
188
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189
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# Content sending management |
190
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sub broadcast : Private { |
191
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0
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0
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my $self = shift; |
192
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0
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0
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my $command = shift; |
193
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0
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0
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0
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my @attendees = @_ |
194
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? $self->resolve_attendees(@_) |
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: $self->get_all_attendees(); |
196
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197
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# Ensure that $command is a reference to a sub |
198
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if ((ref($command) || '') ne 'CODE') { # Auto-define sub |
199
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my ($cmd, @args) = ref $command ? @$command : $command; |
200
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$command = sub { |
201
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my $attendee = shift; |
202
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my $method = $attendee->can($cmd); |
203
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$attendee->$method(@args) if $method; |
204
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return; |
205
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}; |
206
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} ## end if ((ref($command) || ... |
207
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208
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return map { $command->($_) } @attendees; |
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209
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1
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1
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577
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} ## end sub broadcast : |
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2
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4
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210
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211
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sub ping { # Remind them all to remain awake |
212
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return shift->broadcast('ping'); |
213
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} |
214
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215
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sub get_show_attendees { |
216
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my $self = shift; |
217
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0
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return @_ if @_; |
218
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return $self->get_attached_attendees(); |
219
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} |
220
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221
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# Transition commands, default to attached attendees |
222
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sub show { # Set specific slide |
223
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my $self = shift; |
224
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my $slide_no = shift; |
225
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226
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0
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0
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if (! $self->slide_show()->validate_slide_id($slide_no)) { |
227
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$self->logger()->error("show(): invalid slide $slide_no"); |
228
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return; |
229
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} |
230
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231
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0
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if (@_) { |
232
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$self->logger()->debug("show(): going to slide $slide_no " |
233
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. 'for some attendees only'); |
234
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} |
235
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else { |
236
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$self->logger()->debug("show(): going to slide $slide_no"); |
237
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$self->tracker()->goto($slide_no); |
238
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} |
239
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240
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0
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0
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if (my @attendees = $self->get_show_attendees(@_)) { |
241
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0
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|
return $self->broadcast(['show', $slide_no], @attendees); |
242
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} |
243
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0
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$self->logger()->debug('show(): no attendee found'); |
244
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0
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|
return; |
245
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|
} ## end sub show |
246
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247
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|
sub constrained_show : Private { # Factorised transition |
248
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0
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0
|
my $self = shift; |
249
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0
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0
|
my $bare = shift; |
250
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0
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0
|
my $method = 'show_' . $bare; |
251
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252
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0
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0
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0
|
if (@_) { |
253
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0
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0
|
$self->logger()->debug($method . '() for some attendees'); |
254
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|
} |
255
|
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|
else { |
256
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0
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0
|
my $tracker = $self->tracker(); |
257
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0
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0
|
$tracker->can('goto_' . $bare)->($tracker); # Call method OO-style |
258
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0
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0
|
$self->logger()->debug($method . '()'); |
259
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|
} |
260
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261
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0
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0
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|
|
0
|
if (my @attendees = $self->get_show_attendees(@_)) { |
262
|
0
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|
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|
|
0
|
return $self->broadcast($method, @attendees); |
263
|
|
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|
} |
264
|
0
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|
|
0
|
$self->logger()->debug($method . '(): no attendee found'); |
265
|
0
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|
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|
|
0
|
return; |
266
|
1
|
|
|
1
|
|
571
|
} |
|
1
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2
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1
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5
|
|
267
|
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268
|
|
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|
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|
|
sub show_first { |
269
|
0
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|
|
0
|
0
|
|
my $self = shift; |
270
|
0
|
|
|
|
|
|
return $self->constrained_show('first', @_); |
271
|
|
|
|
|
|
|
} ## end sub show_first |
272
|
|
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273
|
|
|
|
|
|
|
sub show_last { |
274
|
0
|
|
|
0
|
0
|
|
my $self = shift; |
275
|
0
|
|
|
|
|
|
return $self->constrained_show('last', @_); |
276
|
|
|
|
|
|
|
} ## end sub show_last |
277
|
|
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|
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|
|
278
|
|
|
|
|
|
|
sub show_next { |
279
|
0
|
|
|
0
|
0
|
|
my $self = shift; |
280
|
0
|
|
|
|
|
|
return $self->constrained_show('next', @_); |
281
|
|
|
|
|
|
|
} ## end sub show_next |
282
|
|
|
|
|
|
|
|
283
|
|
|
|
|
|
|
sub show_previous { |
284
|
0
|
|
|
0
|
0
|
|
my $self = shift; |
285
|
0
|
|
|
|
|
|
return $self->constrained_show('previous', @_); |
286
|
|
|
|
|
|
|
} ## end sub show_previous |
287
|
|
|
|
|
|
|
|
288
|
|
|
|
|
|
|
# Command execution |
289
|
|
|
|
|
|
|
sub execute_commands : Private { |
290
|
0
|
|
|
|
|
0
|
my ($self, $fh) = @_; |
291
|
0
|
|
|
|
|
0
|
$self->get_controller()->execute_commands($fh, $self); |
292
|
0
|
|
|
|
|
0
|
return; |
293
|
1
|
|
|
1
|
|
327
|
} |
|
1
|
|
|
|
|
2
|
|
|
1
|
|
|
|
|
9
|
|
294
|
|
|
|
|
|
|
|
295
|
|
|
|
|
|
|
sub welcome_attendee : Private { |
296
|
0
|
|
|
|
|
0
|
my $self = shift; |
297
|
0
|
|
|
|
|
0
|
my $logger = $self->logger(); |
298
|
|
|
|
|
|
|
|
299
|
0
|
|
|
|
|
0
|
$logger->debug('welcome_attendee(): accept()-ing new attendee'); |
300
|
0
|
0
|
|
|
|
0
|
my $handle = $self->get_door()->accept() |
301
|
|
|
|
|
|
|
or croak("accept(): $OS_ERROR"); |
302
|
0
|
|
|
|
|
0
|
$logger->debug("welcome_attendee(): $handle"); |
303
|
|
|
|
|
|
|
|
304
|
|
|
|
|
|
|
# This also serves the first slide to the connected user |
305
|
0
|
|
|
|
|
0
|
$logger->debug('welcome_attendee(): creating object for new attendee'); |
306
|
0
|
|
|
|
|
0
|
my $attendee = WWW::Slides::Attendee->new( |
307
|
|
|
|
|
|
|
handle => $handle, |
308
|
|
|
|
|
|
|
slide_show => scalar $self->get_slide_show(), |
309
|
|
|
|
|
|
|
current_slide => scalar $self->tracker->current(), |
310
|
|
|
|
|
|
|
check_booking => $self->must_book(), |
311
|
|
|
|
|
|
|
); |
312
|
|
|
|
|
|
|
|
313
|
|
|
|
|
|
|
# Register attendee |
314
|
0
|
|
|
|
|
0
|
$self->get_attendees()->{$handle} = $attendee; |
315
|
0
|
|
|
|
|
0
|
$self->get_selector()->add($handle); |
316
|
|
|
|
|
|
|
|
317
|
0
|
|
|
|
|
0
|
return; |
318
|
1
|
|
|
1
|
|
352
|
} ## end sub welcome_attendee : |
|
1
|
|
|
|
|
2
|
|
|
1
|
|
|
|
|
4
|
|
319
|
|
|
|
|
|
|
|
320
|
|
|
|
|
|
|
sub remove_attendee : Private { |
321
|
0
|
|
|
|
|
0
|
my $self = shift; |
322
|
0
|
|
|
|
|
0
|
my ($attendee) = @_; |
323
|
0
|
|
|
|
|
0
|
my $handle = $attendee->get_handle(); |
324
|
|
|
|
|
|
|
|
325
|
0
|
|
|
|
|
0
|
$self->logger()->debug('removing attendee'); |
326
|
0
|
|
|
|
|
0
|
$self->get_selector()->remove($handle); |
327
|
0
|
|
|
|
|
0
|
delete $self->get_attendees()->{$handle}; |
328
|
|
|
|
|
|
|
|
329
|
0
|
|
|
|
|
0
|
$attendee->shut_down(); |
330
|
0
|
|
|
|
|
0
|
return; |
331
|
1
|
|
|
1
|
|
259
|
} ## end sub remove_attendee : |
|
1
|
|
|
|
|
1
|
|
|
1
|
|
|
|
|
5
|
|
332
|
|
|
|
|
|
|
|
333
|
|
|
|
|
|
|
sub check_attendee : Private { |
334
|
0
|
|
|
|
|
|
my $self = shift; |
335
|
0
|
|
|
|
|
|
my ($attendee) = @_; |
336
|
|
|
|
|
|
|
|
337
|
0
|
|
|
|
|
|
my $is_alive; |
338
|
0
|
0
|
|
|
|
|
if ($attendee->must_check_booking()) { |
339
|
0
|
|
|
|
|
|
my $code = $attendee->booking_code(); |
340
|
0
|
0
|
|
|
|
|
$is_alive = delete($self->booked()->{$code}) if defined $code; |
341
|
0
|
0
|
|
|
|
|
$attendee->book_ok() if $is_alive; |
342
|
|
|
|
|
|
|
} |
343
|
|
|
|
|
|
|
else { |
344
|
0
|
|
|
|
|
|
$is_alive = $attendee->handle_input(); |
345
|
|
|
|
|
|
|
} |
346
|
|
|
|
|
|
|
|
347
|
0
|
0
|
|
|
|
|
$self->remove_attendee($attendee) unless $is_alive; |
348
|
0
|
|
|
|
|
|
return; |
349
|
1
|
|
|
1
|
|
280
|
} ## end sub check_attendee : |
|
1
|
|
|
|
|
2
|
|
|
1
|
|
|
|
|
5
|
|
350
|
|
|
|
|
|
|
|
351
|
|
|
|
|
|
|
sub book { |
352
|
0
|
|
|
0
|
0
|
|
my $self = shift; |
353
|
0
|
|
|
|
|
|
my ($code) = @_; |
354
|
0
|
|
|
|
|
|
$self->logger()->debug("book(): booking with code $code"); |
355
|
0
|
|
|
|
|
|
$self->booked()->{$code} = 1; |
356
|
0
|
|
|
|
|
|
return; |
357
|
|
|
|
|
|
|
} ## end sub book |
358
|
|
|
|
|
|
|
|
359
|
|
|
|
|
|
|
sub quit { |
360
|
0
|
|
|
0
|
0
|
|
my $self = shift; |
361
|
0
|
|
|
|
|
|
$self->logger()->debug("quit() requested"); |
362
|
0
|
|
|
|
|
|
$self->set_alive(0); |
363
|
0
|
|
|
|
|
|
return; |
364
|
|
|
|
|
|
|
} |
365
|
|
|
|
|
|
|
|
366
|
|
|
|
|
|
|
sub attach { |
367
|
0
|
|
|
0
|
0
|
|
my $self = shift; |
368
|
0
|
|
|
|
|
|
my $current = $self->tracker()->current(); |
369
|
0
|
|
|
|
|
|
$self->logger()->debug("attach()"); |
370
|
|
|
|
|
|
|
return $self->broadcast( |
371
|
|
|
|
|
|
|
sub { |
372
|
0
|
|
|
0
|
|
|
my $attendee = shift; |
373
|
0
|
|
|
|
|
|
$attendee->attach(); |
374
|
0
|
|
|
|
|
|
$attendee->show($current); |
375
|
0
|
|
|
|
|
|
return; |
376
|
|
|
|
|
|
|
}, |
377
|
|
|
|
|
|
|
@_ |
378
|
0
|
|
|
|
|
|
); |
379
|
|
|
|
|
|
|
|
380
|
0
|
|
|
|
|
|
return; |
381
|
|
|
|
|
|
|
} ## end sub attach |
382
|
|
|
|
|
|
|
|
383
|
|
|
|
|
|
|
sub detach { |
384
|
0
|
|
|
0
|
0
|
|
my $self = shift; |
385
|
0
|
0
|
|
|
|
|
return unless $self->accepts_detaches(); |
386
|
0
|
|
|
|
|
|
$self->logger()->debug("detach()"); |
387
|
|
|
|
|
|
|
return $self->broadcast( |
388
|
|
|
|
|
|
|
sub { |
389
|
0
|
|
|
0
|
|
|
shift->detach(); |
390
|
0
|
|
|
|
|
|
return; |
391
|
|
|
|
|
|
|
}, |
392
|
|
|
|
|
|
|
@_ |
393
|
0
|
|
|
|
|
|
); |
394
|
|
|
|
|
|
|
} ## end sub detach |
395
|
|
|
|
|
|
|
|
396
|
|
|
|
|
|
|
sub clamp { |
397
|
0
|
|
|
0
|
0
|
|
my $self = shift; |
398
|
0
|
|
|
|
|
|
$self->logger()->debug("clamp()"); |
399
|
0
|
|
|
|
|
|
$self->set_accepts_detaches(0); |
400
|
0
|
|
|
|
|
|
$self->attach(); |
401
|
0
|
|
|
|
|
|
return; |
402
|
|
|
|
|
|
|
} ## end sub clamp |
403
|
|
|
|
|
|
|
|
404
|
|
|
|
|
|
|
sub loose { |
405
|
0
|
|
|
0
|
0
|
|
my $self = shift; |
406
|
0
|
|
|
|
|
|
$self->logger()->debug("loose()"); |
407
|
0
|
|
|
|
|
|
$self->set_accepts_detaches(1); |
408
|
0
|
|
|
|
|
|
return; |
409
|
|
|
|
|
|
|
} |
410
|
|
|
|
|
|
|
|
411
|
0
|
|
|
0
|
0
|
|
sub get_current { return shift->tracker()->current(); } |
412
|
0
|
|
|
0
|
0
|
|
sub get_total { return shift->slide_show()->id_last(); } |
413
|
|
|
|
|
|
|
|
414
|
|
|
|
|
|
|
sub get_attendees_details { |
415
|
0
|
|
|
0
|
0
|
|
my $self = shift; |
416
|
|
|
|
|
|
|
return $self->broadcast( |
417
|
|
|
|
|
|
|
sub { |
418
|
0
|
|
|
0
|
|
|
my $attendee = shift; |
419
|
|
|
|
|
|
|
return { |
420
|
0
|
|
|
|
|
|
is_attached => $attendee->is_attached(), |
421
|
|
|
|
|
|
|
id => $attendee->id(), |
422
|
|
|
|
|
|
|
current_slide => $attendee->tracker()->current(), |
423
|
|
|
|
|
|
|
peer_address => $attendee->peer_address(), |
424
|
|
|
|
|
|
|
}; |
425
|
|
|
|
|
|
|
}, |
426
|
|
|
|
|
|
|
@_ |
427
|
0
|
|
|
|
|
|
); |
428
|
|
|
|
|
|
|
} ## end sub get_attendees_details |
429
|
|
|
|
|
|
|
} |
430
|
|
|
|
|
|
|
|
431
|
|
|
|
|
|
|
1; # Magic true value required at end of module |
432
|
|
|
|
|
|
|
__END__ |