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

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#
# 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.
#
# Collection of configuration items
use strict;
package TWiki::Configure::Section;
use base 'TWiki::Configure::Item';
sub new {
my ($class, $head) = @_;
# SMELL: What is the base object supposed to do with the UI class?
my $this = $class->SUPER::new('TWiki::Configure::UIs::Section');
$this->{headline} = $head;
@{$this->{children}} = ();
return $this;
}
sub addChild {
my ($this, $child) = @_;
foreach my $kid (@{$this->{children}}) {
Carp::confess if $child eq $kid;
}
$child->{parent} = $this;
push(@{$this->{children}}, $child);
}
sub visit {
my ($this, $visitor) = @_;
my %visited;
return 0 unless $visitor->startVisit($this);
foreach my $child (@{$this->{children}}) {
if ($visited{$child}) {
die join(' ',@{$this->{children}});
}
$visited{$child} = 1;
return 0 unless $child->visit($visitor);
}
return 0 unless $visitor->endVisit($this);
return 1;
}
sub getDepth {
my $depth = 0;
my $mum = shift;
while ($mum) {
$depth++;
$mum = $mum->{parent};
}
return $depth;
}
# Get the section object associated with the given headline and depth
sub getSectionObject {
my ($this, $head, $depth) = @_;
if ($this->{headline} eq $head && $this->getDepth() == $depth) {
return $this;
}
foreach my $child (@{$this->{children}}) {
my $cvo = $child->getSectionObject($head, $depth);
return $cvo if $cvo;
}
return undef;
}
# Get the value object associated with the given keys
sub getValueObject {
my ($this, $keys) = @_;
foreach my $child (@{$this->{children}}) {
my $cvo = $child->getValueObject($keys);
return $cvo if $cvo;
}
return undef;
}
# See if this section is changed from the default values. Should
# return a count of changed values.
sub needsSaving {
my ($this, $valuer) = @_;
my $count = 0;
foreach my $child (@{$this->{children}}) {
$count += $child->needsSaving($valuer);
}
return $count;
}
1;