/usr/share/perl5/HTML/Widgets/NavMenu/Tree/Iterator.pm is in libhtml-widgets-navmenu-perl 1.0703-1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 | package HTML::Widgets::NavMenu::Tree::Iterator;
use strict;
use warnings;
use base qw(HTML::Widgets::NavMenu::Object);
use HTML::Widgets::NavMenu::Tree::Iterator::Stack;
use HTML::Widgets::NavMenu::Tree::Iterator::Item;
__PACKAGE__->mk_acc_ref([qw(
coords
stack
)]);
=head1 NAME
HTML::Widgets::NavMenu::Tree::Iterator - an iterator for HTML.
=head1 SYNOPSIS
For internal use only.
=head1 METHODS
=head2 coords
Internal use.
=head2 stack
Internal use.
=cut
sub _init
{
my $self = shift;
$self->stack(HTML::Widgets::NavMenu::Tree::Iterator::Stack->new());
return 0;
}
=head2 $self->top()
Retrieves the stack top item.
=cut
sub top
{
my $self = shift;
return $self->stack()->top();
}
sub _construct_new_item
{
my ($self, $args) = @_;
return HTML::Widgets::NavMenu::Tree::Iterator::Item->new(
$args
);
}
=head2 $self->get_new_item({'node' => $node, 'parent_item' => $parent})
Gets the new item.
=cut
sub get_new_item
{
my ($self, $args) = @_;
my $node = $args->{'node'};
my $parent_item = $args->{'parent_item'};
return
$self->_construct_new_item(
{
'node' => $node,
'subs' => $self->get_node_subs( { 'node' => $node } ),
'accum_state' =>
$self->get_new_accum_state(
{
'item' => $parent_item,
'node' => $node,
}
),
}
);
}
sub _push_into_stack
{
my $self = shift;
my $node = shift;
$self->stack()->push(
$self->get_new_item(
{
'node' => $node,
'parent_item' => $self->top(),
}
),
);
}
=head2 $self->traverse()
Traverses the tree.
=cut
sub traverse
{
my $self = shift;
$self->_push_into_stack($self->get_initial_node());
$self->coords([]);
my $top_item;
MAIN_LOOP: while ($top_item = $self->top())
{
my $visited = $top_item->_is_visited();
if (!$visited)
{
$self->node_start();
}
my $sub_item =
($self->node_should_recurse() ?
$top_item->_visit() :
undef);
if (defined($sub_item))
{
push @{$self->coords()}, $top_item->_visited_index();
$self->_push_into_stack(
$self->get_node_from_sub(
{
'item' => $top_item,
'sub' => $sub_item,
}
),
);
next MAIN_LOOP;
}
else
{
$self->node_end();
$self->stack->pop();
pop(@{$self->coords()})
}
}
return 0;
}
=head2 $self->get_node_from_sub()
This function can be overridden to generate a node from the sub-nodes
returned by get_node_subs() in a different way than the default.
=cut
sub get_node_from_sub
{
my $self = shift;
my $args = shift;
return $args->{'sub'};
}
=head2 $self->find_node_by_coords($coords, $callback)
Finds a node by its coordinations.
=cut
sub find_node_by_coords
{
my $self = shift;
my $coords = shift;
my $callback = shift || (sub { });
my $idx = 0;
my $item =
$self->get_new_item(
{
'node' => $self->get_initial_node(),
}
);
my $internal_callback =
sub {
$callback->(
'idx' => $idx,
'item' => $item,
'self' => $self,
);
};
$internal_callback->();
foreach my $c (@$coords)
{
$item =
$self->get_new_item(
{
'node' =>
$self->get_node_from_sub(
{
'item' => $item,
'sub' => $item->_get_sub($c),
}
),
'parent_item' => $item,
}
);
$idx++;
$internal_callback->();
}
return +{ 'item' => $item, };
}
=head2 $self->get_coords()
Returns the current coordinates of the object.
=cut
sub get_coords
{
my $self = shift;
return $self->coords();
}
=head1 COPYRIGHT & LICENSE
Copyright 2006 Shlomi Fish, all rights reserved.
This program is released under the following license: MIT X11.
=cut
1;
|