whatpm/Whatpm/NanoDOM.pm

=head1 NAME

Whatpm::NanoDOM - A Non-Conforming Implementation of DOM Subset

=head1 DESCRIPTION

The C<Whatpm::NanoDOM> module contains a non-conforming implementation
of a subset of DOM.  It is the intention that this module is
used only for the purpose of testing the C<Whatpm::HTML> module.

See source code if you would like to know what it does.

=cut

package Whatpm::NanoDOM;
use strict;
our $VERSION=do{my @r=(q$Revision: 1.53 $=~/\d+/g);sprintf "%d."."%02d" x $#r,@r};

require Scalar::Util;

package Whatpm::NanoDOM::DOMImplementation;

sub create_document ($) {
  return Whatpm::NanoDOM::Document->new;
} # create_document

package Whatpm::NanoDOM::Node;

sub new ($) {
  my $class = shift;
  my $self = bless {}, $class;
  return $self;
} # new

sub parent_node ($) {
  return shift->{parent_node};
} # parent_node

sub manakai_parent_element ($) {
  my $self = shift;
  my $parent = $self->{parent_node};
  while (defined $parent) {
    if ($parent->node_type == 1) {
      return $parent;
    } else {
      $parent = $parent->{parent_node};
    }
  }
  return undef;
} # manakai_parent_element

sub child_nodes ($) {
  return shift->{child_nodes} || [];
} # child_nodes

## NOTE: Only applied to Elements and Documents
sub append_child ($$) {
  my ($self, $new_child) = @_;
  if (defined $new_child->{parent_node}) {
    my $parent_list = $new_child->{parent_node}->{child_nodes};
    for (0..$#$parent_list) {
      if ($parent_list->[$_] eq $new_child) {
        splice @$parent_list, $_, 1;
      }
    }
  }
  push @{$self->{child_nodes}}, $new_child;
  $new_child->{parent_node} = $self;
  Scalar::Util::weaken ($new_child->{parent_node});
  return $new_child;
} # append_child

## NOTE: Only applied to Elements and Documents
sub insert_before ($$;$) {
  my ($self, $new_child, $ref_child) = @_;
  if (defined $new_child->{parent_node}) {
    my $parent_list = $new_child->{parent_node}->{child_nodes};
    for (0..$#$parent_list) {
      if ($parent_list->[$_] eq $new_child) {
        splice @$parent_list, $_, 1;
      }
    }
  }
  my $i = @{$self->{child_nodes}};
  if (defined $ref_child) {
    for (0..$#{$self->{child_nodes}}) {
      if ($self->{child_nodes}->[$_] eq $ref_child) {
        $i = $_;
        last;
      }
    }
  }
  splice @{$self->{child_nodes}}, $i, 0, $new_child;
  $new_child->{parent_node} = $self;
  Scalar::Util::weaken ($new_child->{parent_node});
  return $new_child;
} # insert_before

## NOTE: Only applied to Elements and Documents
sub remove_child ($$) {
  my ($self, $old_child) = @_;
  my $parent_list = $self->{child_nodes};
  for (0..$#$parent_list) {
    if ($parent_list->[$_] eq $old_child) {
      splice @$parent_list, $_, 1;
    }
  }
  delete $old_child->{parent_node};
  return $old_child;
} # remove_child

## NOTE: Only applied to Elements and Documents
sub has_child_nodes ($) {
  return @{shift->{child_nodes}} > 0;
} # has_child_nodes

## NOTE: Only applied to Elements and Documents
sub first_child ($) {
  my $self = shift;
  return $self->{child_nodes}->[0];
} # first_child

## NOTE: Only applied to Elements and Documents
sub last_child ($) {
  my $self = shift;
  return @{$self->{child_nodes}} ? $self->{child_nodes}->[-1] : undef;
} # last_child

## NOTE: Only applied to Elements and Documents
sub previous_sibling ($) {
  my $self = shift;
  my $parent = $self->{parent_node};
  return undef unless defined $parent;
  my $r;
  for (@{$parent->{child_nodes}}) {
    if ($_ eq $self) {
      return $r;
    } else {
      $r = $_;
    }
  }
  return undef;
} # previous_sibling

sub prefix ($;$) {
  my $self = shift;
  if (@_) {
    $self->{prefix} = shift;
  }
  return $self->{prefix};
} # prefix

sub ELEMENT_NODE () { 1 }
sub ATTRIBUTE_NODE () { 2 }
sub TEXT_NODE () { 3 }
sub CDATA_SECTION_NODE () { 4 }
sub ENTITY_REFERENCE_NODE () { 5 }
sub ENTITY_NODE () { 6 }
sub PROCESSING_INSTRUCTION_NODE () { 7 }
sub COMMENT_NODE () { 8 }
sub DOCUMENT_NODE () { 9 }
sub DOCUMENT_TYPE_NODE () { 10 }
sub DOCUMENT_FRAGMENT_NODE () { 11 }
sub NOTATION_NODE () { 12 }

package Whatpm::NanoDOM::Document;
push our @ISA, 'Whatpm::NanoDOM::Node';

sub new ($) {
  my $self = shift->SUPER::new;
  $self->{child_nodes} = [];
  return $self;
} # new

## A manakai extension
sub manakai_append_text ($$) {
  my $self = shift;
  if (@{$self->{child_nodes}} and
      $self->{child_nodes}->[-1]->node_type == 3) {
    $self->{child_nodes}->[-1]->manakai_append_text (shift);
  } else {
    my $text = $self->create_text_node (shift);
    $self->append_child ($text);
  }
} # manakai_append_text

sub node_type () { 9 }

sub strict_error_checking {
  return 0;
} # strict_error_checking

sub create_text_node ($$) {
  shift;
  return Whatpm::NanoDOM::Text->new (shift);
} # create_text_node

sub create_comment ($$) {
  shift;
  return Whatpm::NanoDOM::Comment->new (shift);
} # create_comment

## The second parameter only supports manakai extended way
## to specify qualified name - "[$prefix, $local_name]"
sub create_element_ns ($$$) {
  my ($self, $nsuri, $qn) = @_;
  return Whatpm::NanoDOM::Element->new ($self, $nsuri, $qn->[0], $qn->[1]);
} # create_element_ns

## A manakai extension
sub create_document_type_definition ($$) {
  shift;
  return Whatpm::NanoDOM::DocumentType->new (shift);
} # create_document_type_definition

sub implementation ($) {
  return 'Whatpm::NanoDOM::DOMImplementation';
} # implementation

sub document_element ($) {
  my $self = shift;
  for (@{$self->child_nodes}) {
    if ($_->node_type == 1) {
      return $_;
    }
  }
  return undef;
} # document_element

sub adopt_node ($$) {
  my @node = ($_[1]);
  while (@node) {
    my $node = shift @node;
    $node->{owner_document} = $_[0];
    Scalar::Util::weaken ($node->{owner_document});
    push @node, @{$node->child_nodes};
    push @node, @{$node->attributes or []} if $node->can ('attributes');
  }
  return $_[1];
} # adopt_node

sub manakai_is_html ($;$) {
  if (@_ > 1) {
    if ($_[1]) {
      $_[0]->{manakai_is_html} = 1;
    } else {
      delete $_[0]->{manakai_is_html};
      delete $_[0]->{manakai_compat_mode};
    }
  }
  return $_[0]->{manakai_is_html};
} # manakai_is_html

sub compat_mode ($) {
  if ($_[0]->{manakai_is_html}) {
    if ($_[0]->{manakai_compat_mode} eq 'quirks') {
      return 'BackCompat';
    }
  }
  return 'CSS1Compat';
} # compat_mode

sub manakai_compat_mode ($;$) {
  if ($_[0]->{manakai_is_html}) {
    if (@_ > 1 and defined $_[1] and
        {'no quirks' => 1, 'limited quirks' => 1, 'quirks' => 1}->{$_[1]}) {
      $_[0]->{manakai_compat_mode} = $_[1];
    }
    return $_[0]->{manakai_compat_mode} || 'no quirks';
  } else {
    return 'no quirks';
  }
} # manakai_compat_mode

package Whatpm::NanoDOM::Element;
push our @ISA, 'Whatpm::NanoDOM::Node';

sub new ($$$$$) {
  my $self = shift->SUPER::new;
  $self->{owner_document} = shift;
  Scalar::Util::weaken ($self->{owner_document});
  $self->{namespace_uri} = shift;
  $self->{prefix} = shift;
  $self->{local_name} = shift;
  $self->{attributes} = {};
  $self->{child_nodes} = [];
  return $self;
} # new

sub owner_document ($) {
  return shift->{owner_document};
} # owner_document

sub clone_node ($$) {
  my ($self, $deep) = @_; ## NOTE: Deep cloning is not supported
  my $clone = bless {
    namespace_uri => $self->{namespace_uri},
    prefix => $self->{prefix},
    local_name => $self->{local_name},      
    child_nodes => [],
  }, ref $self;
  for my $ns (keys %{$self->{attributes}}) {
    for my $ln (keys %{$self->{attributes}->{$ns}}) {
      my $attr = $self->{attributes}->{$ns}->{$ln};
      $clone->{attributes}->{$ns}->{$ln} = bless {
        namespace_uri => $attr->{namespace_uri},
        prefix => $attr->{prefix},
        local_name => $attr->{local_name},
        value => $attr->{value},
      }, ref $self->{attributes}->{$ns}->{$ln};
    }
  }
  return $clone;
} # clone

## A manakai extension
sub manakai_append_text ($$) {
  my $self = shift;
  if (@{$self->{child_nodes}} and
      $self->{child_nodes}->[-1]->node_type == 3) {
    $self->{child_nodes}->[-1]->manakai_append_text (shift);
  } else {
    my $text = Whatpm::NanoDOM::Text->new (shift);
    $self->append_child ($text);
  }
} # manakai_append_text

sub text_content ($) {
  my $self = shift;
  my $r = '';
  for my $child (@{$self->child_nodes}) {
    if ($child->can ('data')) {
      $r .= $child->data;
    } else {
      $r .= $child->text_content;
    }
  }
  return $r;
} # text_content

sub attributes ($) {
  my $self = shift;
  my $r = [];
  ## Order MUST be stable
  for my $ns (sort {$a cmp $b} keys %{$self->{attributes}}) {
    for my $ln (sort {$a cmp $b} keys %{$self->{attributes}->{$ns}}) {
      push @$r, $self->{attributes}->{$ns}->{$ln}
        if defined $self->{attributes}->{$ns}->{$ln};
    }
  }
  return $r;
} # attributes

sub local_name ($) { # TODO: HTML5 case
  return shift->{local_name};
} # local_name

sub manakai_local_name ($) {
  return shift->{local_name}; # no case fixing for HTML5
} # manakai_local_name

sub namespace_uri ($) {
  return shift->{namespace_uri};
} # namespace_uri

sub manakai_element_type_match ($$$) {
  my ($self, $nsuri, $ln) = @_;
  if (defined $nsuri) {
    if (defined $self->{namespace_uri} and $nsuri eq $self->{namespace_uri}) {
      return ($ln eq $self->{local_name});
    } else {
      return 0;
    }
  } else {
    if (not defined $self->{namespace_uri}) {
      return ($ln eq $self->{local_name});
    } else {
      return 0;
    }
  }
} # manakai_element_type_match

sub node_type { 1 }

## TODO: HTML5 capitalization
sub tag_name ($) {
  my $self = shift;
  if (defined $self->{prefix}) {
    return $self->{prefix} . ':' . $self->{local_name};
  } else {
    return $self->{local_name};
  }
} # tag_name

sub get_attribute_ns ($$$) {
  my ($self, $nsuri, $ln) = @_;
  $nsuri = '' unless defined $nsuri;
  return defined $self->{attributes}->{$nsuri}->{$ln}
    ? $self->{attributes}->{$nsuri}->{$ln}->value : undef;
} # get_attribute_ns

sub get_attribute_node_ns ($$$) {
  my ($self, $nsuri, $ln) = @_;
  $nsuri = '' unless defined $nsuri;
  return $self->{attributes}->{$nsuri}->{$ln};
} # get_attribute_node_ns

sub has_attribute_ns ($$$) {
  my ($self, $nsuri, $ln) = @_;
  $nsuri = '' unless defined $nsuri;
  return defined $self->{attributes}->{$nsuri}->{$ln};
} # has_attribute_ns

## The second parameter only supports manakai extended way
## to specify qualified name - "[$prefix, $local_name]"
sub set_attribute_ns ($$$$) {
  my ($self, $nsuri, $qn, $value) = @_;
  $self->{attributes}->{$nsuri}->{$qn->[1]}
    = Whatpm::NanoDOM::Attr->new ($self, $nsuri, $qn->[0], $qn->[1], $value);
} # set_attribute_ns

package Whatpm::NanoDOM::Attr;
push our @ISA, 'Whatpm::NanoDOM::Node';

sub new ($$$$$$) {
  my $self = shift->SUPER::new;
  $self->{owner_element} = shift;
  Scalar::Util::weaken ($self->{owner_element});
  $self->{namespace_uri} = shift;
  $self->{prefix} = shift;
  $self->{local_name} = shift;
  $self->{value} = shift;
  return $self;
} # new

sub namespace_uri ($) {
  return shift->{namespace_uri};
} # namespace_uri

sub manakai_local_name ($) {
  return shift->{local_name};
} # manakai_local_name

sub node_type { 2 }

sub owner_document ($) {
  return shift->owner_element->owner_document;
} # owner_document

## TODO: HTML5 case stuff?
sub name ($) {
  my $self = shift;
  if (defined $self->{prefix}) {
    return $self->{prefix} . ':' . $self->{local_name};
  } else {
    return $self->{local_name};
  }
} # name

sub value ($) {
  return shift->{value};
} # value

sub owner_element ($) {
  return shift->{owner_element};
} # owner_element

package Whatpm::NanoDOM::CharacterData;
push our @ISA, 'Whatpm::NanoDOM::Node';

sub new ($$) {
  my $self = shift->SUPER::new;
  $self->{data} = shift;
  return $self;
} # new

## A manakai extension
sub manakai_append_text ($$) {
  my ($self, $s) = @_;
  $self->{data} .= $s;
} # manakai_append_text

sub data ($) {
  return shift->{data};
} # data

package Whatpm::NanoDOM::Text;
push our @ISA, 'Whatpm::NanoDOM::CharacterData';

sub node_type () { 3 }

package Whatpm::NanoDOM::Comment;
push our @ISA, 'Whatpm::NanoDOM::CharacterData';

sub node_type () { 8 }

package Whatpm::NanoDOM::DocumentType;
push our @ISA, 'Whatpm::NanoDOM::Node';

sub new ($$) {
  my $self = shift->SUPER::new;
  $self->{name} = shift;
  return $self;
} # new

sub node_type () { 10 }

sub name ($) {
  return shift->{name};
} # name

=head1 SEE ALSO

L<Whatpm::HTML>

=head1 AUTHOR

Wakaba <w@suika.fam.cx>.

=head1 LICENSE

Copyright 2007 Wakaba <w@suika.fam.cx>

This library is free software; you can redistribute it
and/or modify it under the same terms as Perl itself.

=cut

1;
# $Date: 2007/07/16 07:48:19 $
1	=head1 NAME
2
3	Whatpm::NanoDOM - A Non-Conforming Implementation of DOM Subset
4
5	=head1 DESCRIPTION
6
7	The C<Whatpm::NanoDOM> module contains a non-conforming implementation
8	of a subset of DOM. It is the intention that this module is
9	used only for the purpose of testing the C<Whatpm::HTML> module.
10
11	See source code if you would like to know what it does.
12
13	=cut
14
15	package Whatpm::NanoDOM;
16	use strict;
17	our $VERSION=do{my @r=(q$Revision: 1.53 $=~/\d+/g);sprintf "%d."."%02d" x $#r,@r};
18
19	require Scalar::Util;
20
21	package Whatpm::NanoDOM::DOMImplementation;
22
23	sub create_document ($) {
24	return Whatpm::NanoDOM::Document->new;
25	} # create_document
26
27	package Whatpm::NanoDOM::Node;
28
29	sub new ($) {
30	my $class = shift;
31	my $self = bless {}, $class;
32	return $self;
33	} # new
34
35	sub parent_node ($) {
36	return shift->{parent_node};
37	} # parent_node
38
39	sub manakai_parent_element ($) {
40	my $self = shift;
41	my $parent = $self->{parent_node};
42	while (defined $parent) {
43	if ($parent->node_type == 1) {
44	return $parent;
45	} else {
46	$parent = $parent->{parent_node};
47	}
48	}
49	return undef;
50	} # manakai_parent_element
51
52	sub child_nodes ($) {
53	return shift->{child_nodes} \|\| [];
54	} # child_nodes
55
56	## NOTE: Only applied to Elements and Documents
57	sub append_child ($$) {
58	my ($self, $new_child) = @_;
59	if (defined $new_child->{parent_node}) {
60	my $parent_list = $new_child->{parent_node}->{child_nodes};
61	for (0..$#$parent_list) {
62	if ($parent_list->[$_] eq $new_child) {
63	splice @$parent_list, $_, 1;
64	}
65	}
66	}
67	push @{$self->{child_nodes}}, $new_child;
68	$new_child->{parent_node} = $self;
69	Scalar::Util::weaken ($new_child->{parent_node});
70	return $new_child;
71	} # append_child
72
73	## NOTE: Only applied to Elements and Documents
74	sub insert_before ($$;$) {
75	my ($self, $new_child, $ref_child) = @_;
76	if (defined $new_child->{parent_node}) {
77	my $parent_list = $new_child->{parent_node}->{child_nodes};
78	for (0..$#$parent_list) {
79	if ($parent_list->[$_] eq $new_child) {
80	splice @$parent_list, $_, 1;
81	}
82	}
83	}
84	my $i = @{$self->{child_nodes}};
85	if (defined $ref_child) {
86	for (0..$#{$self->{child_nodes}}) {
87	if ($self->{child_nodes}->[$_] eq $ref_child) {
88	$i = $_;
89	last;
90	}
91	}
92	}
93	splice @{$self->{child_nodes}}, $i, 0, $new_child;
94	$new_child->{parent_node} = $self;
95	Scalar::Util::weaken ($new_child->{parent_node});
96	return $new_child;
97	} # insert_before
98
99	## NOTE: Only applied to Elements and Documents
100	sub remove_child ($$) {
101	my ($self, $old_child) = @_;
102	my $parent_list = $self->{child_nodes};
103	for (0..$#$parent_list) {
104	if ($parent_list->[$_] eq $old_child) {
105	splice @$parent_list, $_, 1;
106	}
107	}
108	delete $old_child->{parent_node};
109	return $old_child;
110	} # remove_child
111
112	## NOTE: Only applied to Elements and Documents
113	sub has_child_nodes ($) {
114	return @{shift->{child_nodes}} > 0;
115	} # has_child_nodes
116
117	## NOTE: Only applied to Elements and Documents
118	sub first_child ($) {
119	my $self = shift;
120	return $self->{child_nodes}->[0];
121	} # first_child
122
123	## NOTE: Only applied to Elements and Documents
124	sub last_child ($) {
125	my $self = shift;
126	return @{$self->{child_nodes}} ? $self->{child_nodes}->[-1] : undef;
127	} # last_child
128
129	## NOTE: Only applied to Elements and Documents
130	sub previous_sibling ($) {
131	my $self = shift;
132	my $parent = $self->{parent_node};
133	return undef unless defined $parent;
134	my $r;
135	for (@{$parent->{child_nodes}}) {
136	if ($_ eq $self) {
137	return $r;
138	} else {
139	$r = $_;
140	}
141	}
142	return undef;
143	} # previous_sibling
144
145	sub prefix ($;$) {
146	my $self = shift;
147	if (@_) {
148	$self->{prefix} = shift;
149	}
150	return $self->{prefix};
151	} # prefix
152
153	sub ELEMENT_NODE () { 1 }
154	sub ATTRIBUTE_NODE () { 2 }
155	sub TEXT_NODE () { 3 }
156	sub CDATA_SECTION_NODE () { 4 }
157	sub ENTITY_REFERENCE_NODE () { 5 }
158	sub ENTITY_NODE () { 6 }
159	sub PROCESSING_INSTRUCTION_NODE () { 7 }
160	sub COMMENT_NODE () { 8 }
161	sub DOCUMENT_NODE () { 9 }
162	sub DOCUMENT_TYPE_NODE () { 10 }
163	sub DOCUMENT_FRAGMENT_NODE () { 11 }
164	sub NOTATION_NODE () { 12 }
165
166	package Whatpm::NanoDOM::Document;
167	push our @ISA, 'Whatpm::NanoDOM::Node';
168
169	sub new ($) {
170	my $self = shift->SUPER::new;
171	$self->{child_nodes} = [];
172	return $self;
173	} # new
174
175	## A manakai extension
176	sub manakai_append_text ($$) {
177	my $self = shift;
178	if (@{$self->{child_nodes}} and
179	$self->{child_nodes}->[-1]->node_type == 3) {
180	$self->{child_nodes}->[-1]->manakai_append_text (shift);
181	} else {
182	my $text = $self->create_text_node (shift);
183	$self->append_child ($text);
184	}
185	} # manakai_append_text
186
187	sub node_type () { 9 }
188
189	sub strict_error_checking {
190	return 0;
191	} # strict_error_checking
192
193	sub create_text_node ($$) {
194	shift;
195	return Whatpm::NanoDOM::Text->new (shift);
196	} # create_text_node
197
198	sub create_comment ($$) {
199	shift;
200	return Whatpm::NanoDOM::Comment->new (shift);
201	} # create_comment
202
203	## The second parameter only supports manakai extended way
204	## to specify qualified name - "[$prefix, $local_name]"
205	sub create_element_ns ($$$) {
206	my ($self, $nsuri, $qn) = @_;
207	return Whatpm::NanoDOM::Element->new ($self, $nsuri, $qn->[0], $qn->[1]);
208	} # create_element_ns
209
210	## A manakai extension
211	sub create_document_type_definition ($$) {
212	shift;
213	return Whatpm::NanoDOM::DocumentType->new (shift);
214	} # create_document_type_definition
215
216	sub implementation ($) {
217	return 'Whatpm::NanoDOM::DOMImplementation';
218	} # implementation
219
220	sub document_element ($) {
221	my $self = shift;
222	for (@{$self->child_nodes}) {
223	if ($_->node_type == 1) {
224	return $_;
225	}
226	}
227	return undef;
228	} # document_element
229
230	sub adopt_node ($$) {
231	my @node = ($_[1]);
232	while (@node) {
233	my $node = shift @node;
234	$node->{owner_document} = $_[0];
235	Scalar::Util::weaken ($node->{owner_document});
236	push @node, @{$node->child_nodes};
237	push @node, @{$node->attributes or []} if $node->can ('attributes');
238	}
239	return $_[1];
240	} # adopt_node
241
242	sub manakai_is_html ($;$) {
243	if (@_ > 1) {
244	if ($_[1]) {
245	$_[0]->{manakai_is_html} = 1;
246	} else {
247	delete $_[0]->{manakai_is_html};
248	delete $_[0]->{manakai_compat_mode};
249	}
250	}
251	return $_[0]->{manakai_is_html};
252	} # manakai_is_html
253
254	sub compat_mode ($) {
255	if ($_[0]->{manakai_is_html}) {
256	if ($_[0]->{manakai_compat_mode} eq 'quirks') {
257	return 'BackCompat';
258	}
259	}
260	return 'CSS1Compat';
261	} # compat_mode
262
263	sub manakai_compat_mode ($;$) {
264	if ($_[0]->{manakai_is_html}) {
265	if (@_ > 1 and defined $_[1] and
266	{'no quirks' => 1, 'limited quirks' => 1, 'quirks' => 1}->{$_[1]}) {
267	$_[0]->{manakai_compat_mode} = $_[1];
268	}
269	return $_[0]->{manakai_compat_mode} \|\| 'no quirks';
270	} else {
271	return 'no quirks';
272	}
273	} # manakai_compat_mode
274
275	package Whatpm::NanoDOM::Element;
276	push our @ISA, 'Whatpm::NanoDOM::Node';
277
278	sub new ($$$$$) {
279	my $self = shift->SUPER::new;
280	$self->{owner_document} = shift;
281	Scalar::Util::weaken ($self->{owner_document});
282	$self->{namespace_uri} = shift;
283	$self->{prefix} = shift;
284	$self->{local_name} = shift;
285	$self->{attributes} = {};
286	$self->{child_nodes} = [];
287	return $self;
288	} # new
289
290	sub owner_document ($) {
291	return shift->{owner_document};
292	} # owner_document
293
294	sub clone_node ($$) {
295	my ($self, $deep) = @_; ## NOTE: Deep cloning is not supported
296	my $clone = bless {
297	namespace_uri => $self->{namespace_uri},
298	prefix => $self->{prefix},
299	local_name => $self->{local_name},
300	child_nodes => [],
301	}, ref $self;
302	for my $ns (keys %{$self->{attributes}}) {
303	for my $ln (keys %{$self->{attributes}->{$ns}}) {
304	my $attr = $self->{attributes}->{$ns}->{$ln};
305	$clone->{attributes}->{$ns}->{$ln} = bless {
306	namespace_uri => $attr->{namespace_uri},
307	prefix => $attr->{prefix},
308	local_name => $attr->{local_name},
309	value => $attr->{value},
310	}, ref $self->{attributes}->{$ns}->{$ln};
311	}
312	}
313	return $clone;
314	} # clone
315
316	## A manakai extension
317	sub manakai_append_text ($$) {
318	my $self = shift;
319	if (@{$self->{child_nodes}} and
320	$self->{child_nodes}->[-1]->node_type == 3) {
321	$self->{child_nodes}->[-1]->manakai_append_text (shift);
322	} else {
323	my $text = Whatpm::NanoDOM::Text->new (shift);
324	$self->append_child ($text);
325	}
326	} # manakai_append_text
327
328	sub text_content ($) {
329	my $self = shift;
330	my $r = '';
331	for my $child (@{$self->child_nodes}) {
332	if ($child->can ('data')) {
333	$r .= $child->data;
334	} else {
335	$r .= $child->text_content;
336	}
337	}
338	return $r;
339	} # text_content
340
341	sub attributes ($) {
342	my $self = shift;
343	my $r = [];
344	## Order MUST be stable
345	for my $ns (sort {$a cmp $b} keys %{$self->{attributes}}) {
346	for my $ln (sort {$a cmp $b} keys %{$self->{attributes}->{$ns}}) {
347	push @$r, $self->{attributes}->{$ns}->{$ln}
348	if defined $self->{attributes}->{$ns}->{$ln};
349	}
350	}
351	return $r;
352	} # attributes
353
354	sub local_name ($) { # TODO: HTML5 case
355	return shift->{local_name};
356	} # local_name
357
358	sub manakai_local_name ($) {
359	return shift->{local_name}; # no case fixing for HTML5
360	} # manakai_local_name
361
362	sub namespace_uri ($) {
363	return shift->{namespace_uri};
364	} # namespace_uri
365
366	sub manakai_element_type_match ($$$) {
367	my ($self, $nsuri, $ln) = @_;
368	if (defined $nsuri) {
369	if (defined $self->{namespace_uri} and $nsuri eq $self->{namespace_uri}) {
370	return ($ln eq $self->{local_name});
371	} else {
372	return 0;
373	}
374	} else {
375	if (not defined $self->{namespace_uri}) {
376	return ($ln eq $self->{local_name});
377	} else {
378	return 0;
379	}
380	}
381	} # manakai_element_type_match
382
383	sub node_type { 1 }
384
385	## TODO: HTML5 capitalization
386	sub tag_name ($) {
387	my $self = shift;
388	if (defined $self->{prefix}) {
389	return $self->{prefix} . ':' . $self->{local_name};
390	} else {
391	return $self->{local_name};
392	}
393	} # tag_name
394
395	sub get_attribute_ns ($$$) {
396	my ($self, $nsuri, $ln) = @_;
397	$nsuri = '' unless defined $nsuri;
398	return defined $self->{attributes}->{$nsuri}->{$ln}
399	? $self->{attributes}->{$nsuri}->{$ln}->value : undef;
400	} # get_attribute_ns
401
402	sub get_attribute_node_ns ($$$) {
403	my ($self, $nsuri, $ln) = @_;
404	$nsuri = '' unless defined $nsuri;
405	return $self->{attributes}->{$nsuri}->{$ln};
406	} # get_attribute_node_ns
407
408	sub has_attribute_ns ($$$) {
409	my ($self, $nsuri, $ln) = @_;
410	$nsuri = '' unless defined $nsuri;
411	return defined $self->{attributes}->{$nsuri}->{$ln};
412	} # has_attribute_ns
413
414	## The second parameter only supports manakai extended way
415	## to specify qualified name - "[$prefix, $local_name]"
416	sub set_attribute_ns ($$$$) {
417	my ($self, $nsuri, $qn, $value) = @_;
418	$self->{attributes}->{$nsuri}->{$qn->[1]}
419	= Whatpm::NanoDOM::Attr->new ($self, $nsuri, $qn->[0], $qn->[1], $value);
420	} # set_attribute_ns
421
422	package Whatpm::NanoDOM::Attr;
423	push our @ISA, 'Whatpm::NanoDOM::Node';
424
425	sub new ($$$$$$) {
426	my $self = shift->SUPER::new;
427	$self->{owner_element} = shift;
428	Scalar::Util::weaken ($self->{owner_element});
429	$self->{namespace_uri} = shift;
430	$self->{prefix} = shift;
431	$self->{local_name} = shift;
432	$self->{value} = shift;
433	return $self;
434	} # new
435
436	sub namespace_uri ($) {
437	return shift->{namespace_uri};
438	} # namespace_uri
439
440	sub manakai_local_name ($) {
441	return shift->{local_name};
442	} # manakai_local_name
443
444	sub node_type { 2 }
445
446	sub owner_document ($) {
447	return shift->owner_element->owner_document;
448	} # owner_document
449
450	## TODO: HTML5 case stuff?
451	sub name ($) {
452	my $self = shift;
453	if (defined $self->{prefix}) {
454	return $self->{prefix} . ':' . $self->{local_name};
455	} else {
456	return $self->{local_name};
457	}
458	} # name
459
460	sub value ($) {
461	return shift->{value};
462	} # value
463
464	sub owner_element ($) {
465	return shift->{owner_element};
466	} # owner_element
467
468	package Whatpm::NanoDOM::CharacterData;
469	push our @ISA, 'Whatpm::NanoDOM::Node';
470
471	sub new ($$) {
472	my $self = shift->SUPER::new;
473	$self->{data} = shift;
474	return $self;
475	} # new
476
477	## A manakai extension
478	sub manakai_append_text ($$) {
479	my ($self, $s) = @_;
480	$self->{data} .= $s;
481	} # manakai_append_text
482
483	sub data ($) {
484	return shift->{data};
485	} # data
486
487	package Whatpm::NanoDOM::Text;
488	push our @ISA, 'Whatpm::NanoDOM::CharacterData';
489
490	sub node_type () { 3 }
491
492	package Whatpm::NanoDOM::Comment;
493	push our @ISA, 'Whatpm::NanoDOM::CharacterData';
494
495	sub node_type () { 8 }
496
497	package Whatpm::NanoDOM::DocumentType;
498	push our @ISA, 'Whatpm::NanoDOM::Node';
499
500	sub new ($$) {
501	my $self = shift->SUPER::new;
502	$self->{name} = shift;
503	return $self;
504	} # new
505
506	sub node_type () { 10 }
507
508	sub name ($) {
509	return shift->{name};
510	} # name
511
512	=head1 SEE ALSO
513
514	L<Whatpm::HTML>
515
516	=head1 AUTHOR
517
518	Wakaba <w@suika.fam.cx>.
519
520	=head1 LICENSE
521
522	Copyright 2007 Wakaba <w@suika.fam.cx>
523
524	This library is free software; you can redistribute it
525	and/or modify it under the same terms as Perl itself.
526
527	=cut
528
529	1;
530	# $Date: 2007/07/16 07:48:19 $