wiki-archive/twiki/lib/TWiki/Configure/Value.pm

88 lines
2.3 KiB
Perl

#
# TWiki Enterprise Collaboration Platform, http://TWiki.org/
#
# Copyright (C) 2000-2006 TWiki Contributors.
#
# This program is free software; you can redistribute it and/or
# modify it under the terms of the GNU General Public License
# as published by the Free Software Foundation; either version 2
# of the License, or (at your option) any later version. For
# more details read LICENSE in the root of this distribution.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
#
# As per the GPL, removal of this notice is prohibited.
#
package TWiki::Configure::Value;
use strict;
use base 'TWiki::Configure::Item';
use TWiki::Configure::Type;
# The opts are additional parameters, and by convention may
# be a number (for a string length), a comma separated list of values
# (for a select) and may also have an M for mandatory, or a H for hidden.
sub new {
my $class = shift;
my $this = bless($class->SUPER::new('TWiki::Configure::UIs::Value'), $class);
$this->{keys} = '';
$this->{opts} = '';
$this->set(@_);
if (defined $this->{opts}) {
$this->{mandatory} = ($this->{opts} =~ /(\b|^)M(\b|$)/);
$this->{hidden} = ($this->{opts} =~ /(\b|^)H(\b|$)/);
}
return $this;
}
sub getKeys {
my $this = shift;
return $this->{keys};
}
sub getType {
my $this = shift;
unless ($this->{type}) {
$this->{type} =
TWiki::Configure::Type::load($this->{typename} || 'UNKNOWN');
}
return $this->{type};
}
sub visit {
my ($this, $visitor) = @_;
return 0 unless $visitor->startVisit($this);
return 0 unless $visitor->endVisit($this);
return 1;
}
sub getValueObject {
my ($this, $keys) = @_;
return $this if ($this->{keys} && $keys eq $this->{keys});
return undef;
}
# See if this value is changed from the default. The comparison
# is done according to the rules for the type of the value.
sub needsSaving {
my ($this, $valuer) = @_;
my $curval = $valuer->currentValue($this);
my $defval = $valuer->defaultValue($this);
return 0 if $this->getType()->equals($curval, $defval);
#print STDERR "TEST $this->{keys} D'",($defval||'undef'),"' C'",($curval||'undef'),"'\n";
return 1;
}
1;