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package App::TimeClock::Daily::PrinterInterface; |
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=head1 NAME |
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App::TimeClock::Daily::PrinterInterface |
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=head1 DESCRIPTION |
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Interface class. All printer objects given to |
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L constructor must be derived from |
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PrinterInterface. |
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=head1 SYNOPSIS |
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package App::TimeClock::Daily::MyPrinter; |
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our @ISA = qw(App::TimeClock::Daily::PrinterInterface); |
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... |
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sub print_header { |
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... |
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} |
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sub print_day { |
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... |
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} |
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sub print_footer { |
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... |
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} |
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=head1 METHODS |
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=over |
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=cut |
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=item new() |
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Creates a new object. |
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=cut |
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sub new { |
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bless { }, shift; |
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} |
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=item _print() |
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Private print method that uses handle specified by L<_set_ouput_fh> or stdout by default. |
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All implementing classes should use _print to print instead of print. |
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This makes testing much easier. |
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=cut |
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sub _print { |
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my $self = shift; |
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my $fh = $self->_get_output_fh; |
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print { $fh } @_; |
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} |
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=item _get_output_fh() |
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Get the file handle used by L<_print>. |
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=cut |
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sub _get_output_fh { |
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# When testing _output will always be set, i.e. skip coverage check of right condition |
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# uncoverable condition right |
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return $_[0]->{_output} || \*STDOUT; |
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} |
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=item _set_ouput_fh() |
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Set the file handle used by L<_print>. |
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=cut |
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sub _set_output_fh { $_[0]->{_output} = $_[1] } |
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=item print_header() |
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Called once at the start of a report. |
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=cut |
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sub print_header { shift->_must_implement; }; |
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=item print_day() |
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Called for each day in the report. |
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=cut |
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sub print_day { shift->_must_implement; }; |
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=item print_footer() |
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Called once at the end of a report. |
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=cut |
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sub print_footer { shift->_must_implement; }; |
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sub _must_implement { |
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(my $name = (caller(1))[3]) =~ s/^.*:://; |
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my ($filename, $line) = (caller(0))[1..2]; |
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die "You must implement $name() method at $filename line $line"; |
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} |
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1; |
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=back |
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=for text |
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=encoding utf-8 |
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=end |
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108
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=head1 AUTHOR |
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Søren Lund, C<< >> |
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=head1 SEE ALSO |
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114
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L |
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116
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=head1 COPYRIGHT |
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Copyright (C) 2012-2015 Søren Lund |
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This file is part of App::TimeClock. |
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App::TimeClock is free software: you can redistribute it and/or modify |
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it under the terms of the GNU General Public License as published by |
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the Free Software Foundation, either version 3 of the License, or |
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(at your option) any later version. |
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App::TimeClock is distributed in the hope that it will be useful, |
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but WITHOUT ANY WARRANTY; without even the implied warranty of |
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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GNU General Public License for more details. |
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You should have received a copy of the GNU General Public License |
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along with App::TimeClock. If not, see . |