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: 1.18 $=~/\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 get_user_data ($$) {
  return $_[0]->{$_[1]};
} # get_user_data

sub set_user_data ($$;$$) {
  $_[0]->{$_[1]} = $_[2];
} # set_user_data

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

sub manakai_head ($) {
  my $html = $_[0]->manakai_html;
  return undef unless defined $html;
  for my $el (@{$html->child_nodes}) {
    next unless $el->node_type == 1; # ELEMENT_NODE
    my $nsuri = $el->namespace_uri;
    next unless defined $nsuri;
    next unless $nsuri eq q<http://www.w3.org/1999/xhtml>;
    next unless $el->manakai_local_name eq 'head';
    return $el;
  }
  return undef;
} # manakai_head

sub manakai_html ($) {
  my $de = $_[0]->document_element;
  my $nsuri = $de->namespace_uri;
  if (defined $nsuri and $nsuri eq q<http://www.w3.org/1999/xhtml> and
      $de->manakai_local_name eq 'html') {
    return $de;
  } else {
    return undef;
  }
} # manakai_html

sub input_encoding ($;$) {
  $_[0]->{input_encoding} = $_[1] if @_ > 1;
  return $_[0]->{input_encoding};
}

sub manakai_charset ($;$) {
  $_[0]->{manakai_charset} = $_[1] if @_ > 1;
  return $_[0]->{manakai_charset};
}

sub manakai_has_bom ($;$) {
  $_[0]->{manakai_has_bom} = $_[1] if @_ > 1;
  return $_[0]->{manakai_has_bom};
}

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

sub public_id ($;$) {
  $_[0]->{public_id} = $_[1] if @_ > 1;
  return $_[0]->{public_id};
} # public_id

sub system_id ($;$) {
  $_[0]->{system_id} = $_[1] if @_ > 1;
  return $_[0]->{system_id};
} # system_id

=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: 2007/11/23 07:35:03 $
1	wakaba	1.1	=head1 NAME
2
3	wakaba	1.2	Whatpm::NanoDOM - A Non-Conforming Implementation of DOM Subset
4	wakaba	1.1
5			=head1 DESCRIPTION
6
7	wakaba	1.2	The C<Whatpm::NanoDOM> module contains a non-conforming implementation
8	wakaba	1.1	of a subset of DOM. It is the intention that this module is
9	wakaba	1.2	used only for the purpose of testing the C<Whatpm::HTML> module.
10	wakaba	1.1
11			See source code if you would like to know what it does.
12
13			=cut
14
15	wakaba	1.2	package Whatpm::NanoDOM;
16	wakaba	1.1	use strict;
17	wakaba	1.19	our $VERSION=do{my @r=(q$Revision: 1.18 $=~/\d+/g);sprintf "%d."."%02d" x $#r,@r};
18	wakaba	1.1
19	wakaba	1.3	require Scalar::Util;
20
21			package Whatpm::NanoDOM::DOMImplementation;
22
23			sub create_document ($) {
24			return Whatpm::NanoDOM::Document->new;
25			} # create_document
26
27	wakaba	1.2	package Whatpm::NanoDOM::Node;
28	wakaba	1.1
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	wakaba	1.4	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 = $parent->{parent_node};
47			}
48			}
49			return undef;
50			} # manakai_parent_element
51
52	wakaba	1.1	sub child_nodes ($) {
53	wakaba	1.7	return shift->{child_nodes} \|\| [];
54	wakaba	1.1	} # child_nodes
55
56			## NOTE: Only applied to Elements and Documents
57			sub append_child ($$) {
58			my ($self, $new_child) = @_;
59			if (defined $new_child->{parent_node}) {
60			my $parent_list = $new_child->{parent_node}->{child_nodes};
61			for (0..$#$parent_list) {
62			if ($parent_list->[$_] eq $new_child) {
63			splice @$parent_list, $_, 1;
64			}
65			}
66			}
67			push @{$self->{child_nodes}}, $new_child;
68	wakaba	1.3	$new_child->{parent_node} = $self;
69			Scalar::Util::weaken ($new_child->{parent_node});
70	wakaba	1.1	return $new_child;
71			} # append_child
72
73			## NOTE: Only applied to Elements and Documents
74			sub insert_before ($$;$) {
75			my ($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	wakaba	1.5	$new_child->{parent_node} = $self;
95			Scalar::Util::weaken ($new_child->{parent_node});
96	wakaba	1.1	return $new_child;
97			} # insert_before
98
99			## NOTE: Only applied to Elements and Documents
100			sub remove_child ($$) {
101			my ($self, $old_child) = @_;
102			my $parent_list = $self->{child_nodes};
103			for (0..$#$parent_list) {
104			if ($parent_list->[$_] eq $old_child) {
105			splice @$parent_list, $_, 1;
106			}
107			}
108			delete $old_child->{parent_node};
109			return $old_child;
110			} # remove_child
111
112			## NOTE: Only applied to Elements and Documents
113			sub has_child_nodes ($) {
114			return @{shift->{child_nodes}} > 0;
115			} # has_child_nodes
116
117			## NOTE: Only applied to Elements and Documents
118	wakaba	1.8	sub first_child ($) {
119			my $self = shift;
120			return $self->{child_nodes}->[0];
121			} # first_child
122
123			## NOTE: Only applied to Elements and Documents
124	wakaba	1.1	sub last_child ($) {
125			my $self = shift;
126			return @{$self->{child_nodes}} ? $self->{child_nodes}->[-1] : undef;
127			} # last_child
128
129			## NOTE: Only applied to Elements and Documents
130			sub previous_sibling ($) {
131			my $self = shift;
132			my $parent = $self->{parent_node};
133			return undef unless defined $parent;
134			my $r;
135			for (@{$parent->{child_nodes}}) {
136			if ($_ eq $self) {
137			return $r;
138			} else {
139			$r = $_;
140			}
141			}
142			return undef;
143			} # previous_sibling
144
145	wakaba	1.6	sub prefix ($;$) {
146			my $self = shift;
147			if (@_) {
148			$self->{prefix} = shift;
149			}
150			return $self->{prefix};
151			} # prefix
152
153	wakaba	1.18	sub get_user_data ($$) {
154			return $_[0]->{$_[1]};
155			} # get_user_data
156
157			sub set_user_data ($$;$$) {
158			$_[0]->{$_[1]} = $_[2];
159			} # set_user_data
160
161	wakaba	1.1	sub ELEMENT_NODE () { 1 }
162			sub ATTRIBUTE_NODE () { 2 }
163			sub TEXT_NODE () { 3 }
164			sub CDATA_SECTION_NODE () { 4 }
165			sub ENTITY_REFERENCE_NODE () { 5 }
166			sub ENTITY_NODE () { 6 }
167			sub PROCESSING_INSTRUCTION_NODE () { 7 }
168			sub COMMENT_NODE () { 8 }
169			sub DOCUMENT_NODE () { 9 }
170			sub DOCUMENT_TYPE_NODE () { 10 }
171			sub DOCUMENT_FRAGMENT_NODE () { 11 }
172			sub NOTATION_NODE () { 12 }
173
174	wakaba	1.2	package Whatpm::NanoDOM::Document;
175			push our @ISA, 'Whatpm::NanoDOM::Node';
176	wakaba	1.1
177			sub new ($) {
178			my $self = shift->SUPER::new;
179			$self->{child_nodes} = [];
180			return $self;
181			} # new
182
183			## A manakai extension
184			sub manakai_append_text ($$) {
185			my $self = shift;
186			if (@{$self->{child_nodes}} and
187			$self->{child_nodes}->[-1]->node_type == 3) {
188			$self->{child_nodes}->[-1]->manakai_append_text (shift);
189			} else {
190			my $text = $self->create_text_node (shift);
191			$self->append_child ($text);
192			}
193			} # manakai_append_text
194
195			sub node_type () { 9 }
196
197			sub strict_error_checking {
198			return 0;
199			} # strict_error_checking
200
201			sub create_text_node ($$) {
202			shift;
203	wakaba	1.2	return Whatpm::NanoDOM::Text->new (shift);
204	wakaba	1.1	} # create_text_node
205
206			sub create_comment ($$) {
207			shift;
208	wakaba	1.2	return Whatpm::NanoDOM::Comment->new (shift);
209	wakaba	1.1	} # create_comment
210
211			## The second parameter only supports manakai extended way
212			## to specify qualified name - "[$prefix, $local_name]"
213			sub create_element_ns ($$$) {
214			my ($self, $nsuri, $qn) = @_;
215	wakaba	1.3	return Whatpm::NanoDOM::Element->new ($self, $nsuri, $qn->[0], $qn->[1]);
216	wakaba	1.1	} # create_element_ns
217
218			## A manakai extension
219			sub create_document_type_definition ($$) {
220			shift;
221	wakaba	1.2	return Whatpm::NanoDOM::DocumentType->new (shift);
222	wakaba	1.1	} # create_document_type_definition
223
224	wakaba	1.3	sub implementation ($) {
225			return 'Whatpm::NanoDOM::DOMImplementation';
226			} # implementation
227
228	wakaba	1.4	sub document_element ($) {
229			my $self = shift;
230			for (@{$self->child_nodes}) {
231			if ($_->node_type == 1) {
232			return $_;
233			}
234			}
235			return undef;
236			} # document_element
237
238	wakaba	1.12	sub adopt_node ($$) {
239	wakaba	1.11	my @node = ($_[1]);
240			while (@node) {
241			my $node = shift @node;
242			$node->{owner_document} = $_[0];
243			Scalar::Util::weaken ($node->{owner_document});
244			push @node, @{$node->child_nodes};
245			push @node, @{$node->attributes or []} if $node->can ('attributes');
246			}
247			return $_[1];
248			} # adopt_node
249
250	wakaba	1.12	sub manakai_is_html ($;$) {
251			if (@_ > 1) {
252			if ($_[1]) {
253			$_[0]->{manakai_is_html} = 1;
254			} else {
255	wakaba	1.13	delete $_[0]->{manakai_is_html};
256	wakaba	1.12	delete $_[0]->{manakai_compat_mode};
257			}
258			}
259			return $_[0]->{manakai_is_html};
260			} # manakai_is_html
261
262			sub compat_mode ($) {
263			if ($_[0]->{manakai_is_html}) {
264			if ($_[0]->{manakai_compat_mode} eq 'quirks') {
265			return 'BackCompat';
266			}
267			}
268			return 'CSS1Compat';
269			} # compat_mode
270
271			sub manakai_compat_mode ($;$) {
272			if ($_[0]->{manakai_is_html}) {
273			if (@_ > 1 and defined $_[1] and
274			{'no quirks' => 1, 'limited quirks' => 1, 'quirks' => 1}->{$_[1]}) {
275			$_[0]->{manakai_compat_mode} = $_[1];
276			}
277			return $_[0]->{manakai_compat_mode} \|\| 'no quirks';
278			} else {
279			return 'no quirks';
280			}
281			} # manakai_compat_mode
282
283	wakaba	1.19	sub manakai_head ($) {
284			my $html = $_[0]->manakai_html;
285			return undef unless defined $html;
286			for my $el (@{$html->child_nodes}) {
287			next unless $el->node_type == 1; # ELEMENT_NODE
288			my $nsuri = $el->namespace_uri;
289			next unless defined $nsuri;
290			next unless $nsuri eq q<http://www.w3.org/1999/xhtml>;
291			next unless $el->manakai_local_name eq 'head';
292			return $el;
293			}
294			return undef;
295			} # manakai_head
296
297			sub manakai_html ($) {
298			my $de = $_[0]->document_element;
299			my $nsuri = $de->namespace_uri;
300			if (defined $nsuri and $nsuri eq q<http://www.w3.org/1999/xhtml> and
301			$de->manakai_local_name eq 'html') {
302			return $de;
303			} else {
304			return undef;
305			}
306			} # manakai_html
307
308	wakaba	1.17	sub input_encoding ($;$) {
309			$_[0]->{input_encoding} = $_[1] if @_ > 1;
310			return $_[0]->{input_encoding};
311			}
312
313			sub manakai_charset ($;$) {
314			$_[0]->{manakai_charset} = $_[1] if @_ > 1;
315			return $_[0]->{manakai_charset};
316			}
317
318			sub manakai_has_bom ($;$) {
319			$_[0]->{manakai_has_bom} = $_[1] if @_ > 1;
320			return $_[0]->{manakai_has_bom};
321			}
322
323	wakaba	1.2	package Whatpm::NanoDOM::Element;
324			push our @ISA, 'Whatpm::NanoDOM::Node';
325	wakaba	1.1
326	wakaba	1.3	sub new ($$$$$) {
327	wakaba	1.1	my $self = shift->SUPER::new;
328	wakaba	1.3	$self->{owner_document} = shift;
329			Scalar::Util::weaken ($self->{owner_document});
330	wakaba	1.1	$self->{namespace_uri} = shift;
331			$self->{prefix} = shift;
332			$self->{local_name} = shift;
333			$self->{attributes} = {};
334			$self->{child_nodes} = [];
335			return $self;
336			} # new
337
338	wakaba	1.3	sub owner_document ($) {
339			return shift->{owner_document};
340			} # owner_document
341
342	wakaba	1.1	sub clone_node ($$) {
343			my ($self, $deep) = @_; ## NOTE: Deep cloning is not supported
344			my $clone = bless {
345			namespace_uri => $self->{namespace_uri},
346			prefix => $self->{prefix},
347			local_name => $self->{local_name},
348			child_nodes => [],
349			}, ref $self;
350			for my $ns (keys %{$self->{attributes}}) {
351			for my $ln (keys %{$self->{attributes}->{$ns}}) {
352			my $attr = $self->{attributes}->{$ns}->{$ln};
353			$clone->{attributes}->{$ns}->{$ln} = bless {
354			namespace_uri => $attr->{namespace_uri},
355			prefix => $attr->{prefix},
356			local_name => $attr->{local_name},
357			value => $attr->{value},
358			}, ref $self->{attributes}->{$ns}->{$ln};
359			}
360			}
361			return $clone;
362			} # clone
363
364			## A manakai extension
365			sub manakai_append_text ($$) {
366			my $self = shift;
367			if (@{$self->{child_nodes}} and
368			$self->{child_nodes}->[-1]->node_type == 3) {
369			$self->{child_nodes}->[-1]->manakai_append_text (shift);
370			} else {
371	wakaba	1.2	my $text = Whatpm::NanoDOM::Text->new (shift);
372	wakaba	1.1	$self->append_child ($text);
373			}
374			} # manakai_append_text
375
376	wakaba	1.7	sub text_content ($) {
377			my $self = shift;
378			my $r = '';
379			for my $child (@{$self->child_nodes}) {
380			if ($child->can ('data')) {
381			$r .= $child->data;
382			} else {
383			$r .= $child->text_content;
384			}
385			}
386			return $r;
387			} # text_content
388
389	wakaba	1.1	sub attributes ($) {
390			my $self = shift;
391			my $r = [];
392			## Order MUST be stable
393			for my $ns (sort {$a cmp $b} keys %{$self->{attributes}}) {
394			for my $ln (sort {$a cmp $b} keys %{$self->{attributes}->{$ns}}) {
395			push @$r, $self->{attributes}->{$ns}->{$ln}
396			if defined $self->{attributes}->{$ns}->{$ln};
397			}
398			}
399			return $r;
400			} # attributes
401
402	wakaba	1.3	sub local_name ($) { # TODO: HTML5 case
403			return shift->{local_name};
404			} # local_name
405
406	wakaba	1.4	sub manakai_local_name ($) {
407			return shift->{local_name}; # no case fixing for HTML5
408			} # manakai_local_name
409
410	wakaba	1.3	sub namespace_uri ($) {
411			return shift->{namespace_uri};
412			} # namespace_uri
413
414	wakaba	1.4	sub manakai_element_type_match ($$$) {
415			my ($self, $nsuri, $ln) = @_;
416			if (defined $nsuri) {
417			if (defined $self->{namespace_uri} and $nsuri eq $self->{namespace_uri}) {
418			return ($ln eq $self->{local_name});
419			} else {
420			return 0;
421			}
422			} else {
423			if (not defined $self->{namespace_uri}) {
424			return ($ln eq $self->{local_name});
425			} else {
426			return 0;
427			}
428			}
429			} # manakai_element_type_match
430
431	wakaba	1.1	sub node_type { 1 }
432
433			## TODO: HTML5 capitalization
434			sub tag_name ($) {
435			my $self = shift;
436			if (defined $self->{prefix}) {
437			return $self->{prefix} . ':' . $self->{local_name};
438			} else {
439			return $self->{local_name};
440			}
441			} # tag_name
442
443	wakaba	1.8	sub get_attribute_ns ($$$) {
444			my ($self, $nsuri, $ln) = @_;
445			$nsuri = '' unless defined $nsuri;
446			return defined $self->{attributes}->{$nsuri}->{$ln}
447			? $self->{attributes}->{$nsuri}->{$ln}->value : undef;
448			} # get_attribute_ns
449
450	wakaba	1.9	sub get_attribute_node_ns ($$$) {
451			my ($self, $nsuri, $ln) = @_;
452			$nsuri = '' unless defined $nsuri;
453			return $self->{attributes}->{$nsuri}->{$ln};
454			} # get_attribute_node_ns
455
456	wakaba	1.1	sub has_attribute_ns ($$$) {
457			my ($self, $nsuri, $ln) = @_;
458	wakaba	1.8	$nsuri = '' unless defined $nsuri;
459	wakaba	1.1	return defined $self->{attributes}->{$nsuri}->{$ln};
460			} # has_attribute_ns
461
462			## The second parameter only supports manakai extended way
463			## to specify qualified name - "[$prefix, $local_name]"
464			sub set_attribute_ns ($$$$) {
465			my ($self, $nsuri, $qn, $value) = @_;
466			$self->{attributes}->{$nsuri}->{$qn->[1]}
467	wakaba	1.5	= Whatpm::NanoDOM::Attr->new ($self, $nsuri, $qn->[0], $qn->[1], $value);
468	wakaba	1.1	} # set_attribute_ns
469
470	wakaba	1.2	package Whatpm::NanoDOM::Attr;
471			push our @ISA, 'Whatpm::NanoDOM::Node';
472	wakaba	1.1
473	wakaba	1.5	sub new ($$$$$$) {
474	wakaba	1.1	my $self = shift->SUPER::new;
475	wakaba	1.5	$self->{owner_element} = shift;
476			Scalar::Util::weaken ($self->{owner_element});
477	wakaba	1.1	$self->{namespace_uri} = shift;
478			$self->{prefix} = shift;
479			$self->{local_name} = shift;
480			$self->{value} = shift;
481			return $self;
482			} # new
483
484	wakaba	1.5	sub namespace_uri ($) {
485			return shift->{namespace_uri};
486			} # namespace_uri
487
488			sub manakai_local_name ($) {
489			return shift->{local_name};
490			} # manakai_local_name
491
492	wakaba	1.1	sub node_type { 2 }
493
494	wakaba	1.14	sub owner_document ($) {
495			return shift->owner_element->owner_document;
496			} # owner_document
497
498	wakaba	1.1	## TODO: HTML5 case stuff?
499			sub name ($) {
500			my $self = shift;
501			if (defined $self->{prefix}) {
502			return $self->{prefix} . ':' . $self->{local_name};
503			} else {
504			return $self->{local_name};
505			}
506			} # name
507
508			sub value ($) {
509			return shift->{value};
510			} # value
511
512	wakaba	1.5	sub owner_element ($) {
513			return shift->{owner_element};
514			} # owner_element
515
516	wakaba	1.2	package Whatpm::NanoDOM::CharacterData;
517			push our @ISA, 'Whatpm::NanoDOM::Node';
518	wakaba	1.1
519			sub new ($$) {
520			my $self = shift->SUPER::new;
521			$self->{data} = shift;
522			return $self;
523			} # new
524
525			## A manakai extension
526			sub manakai_append_text ($$) {
527			my ($self, $s) = @_;
528			$self->{data} .= $s;
529			} # manakai_append_text
530
531			sub data ($) {
532			return shift->{data};
533			} # data
534
535	wakaba	1.2	package Whatpm::NanoDOM::Text;
536			push our @ISA, 'Whatpm::NanoDOM::CharacterData';
537	wakaba	1.1
538			sub node_type () { 3 }
539
540	wakaba	1.2	package Whatpm::NanoDOM::Comment;
541			push our @ISA, 'Whatpm::NanoDOM::CharacterData';
542	wakaba	1.1
543			sub node_type () { 8 }
544
545	wakaba	1.2	package Whatpm::NanoDOM::DocumentType;
546			push our @ISA, 'Whatpm::NanoDOM::Node';
547	wakaba	1.1
548			sub new ($$) {
549			my $self = shift->SUPER::new;
550			$self->{name} = shift;
551			return $self;
552			} # new
553
554			sub node_type () { 10 }
555
556			sub name ($) {
557			return shift->{name};
558			} # name
559
560	wakaba	1.16	sub public_id ($;$) {
561			$_[0]->{public_id} = $_[1] if @_ > 1;
562			return $_[0]->{public_id};
563			} # public_id
564
565			sub system_id ($;$) {
566			$_[0]->{system_id} = $_[1] if @_ > 1;
567			return $_[0]->{system_id};
568			} # system_id
569
570	wakaba	1.1	=head1 SEE ALSO
571
572	wakaba	1.2	L<Whatpm::HTML>
573	wakaba	1.1
574			=head1 AUTHOR
575
576			Wakaba <w@suika.fam.cx>.
577
578			=head1 LICENSE
579
580			Copyright 2007 Wakaba <w@suika.fam.cx>
581
582			This library is free software; you can redistribute it
583			and/or modify it under the same terms as Perl itself.
584
585			=cut
586
587			1;
588	wakaba	1.19	# $Date: 2007/11/23 07:35:03 $