Message/DOM/CSSStyleDeclaration.pm

package Message::DOM::CSSStyleDeclaration;
use strict;
our $VERSION=do{my @r=(q$Revision: 1.11 $=~/\d+/g);sprintf "%d."."%02d" x $#r,@r};
push our @ISA, 'Message::IF::CSSStyleDeclaration',
    'Message::IF::CSS2Properties';

sub ____new ($) {
  return bless \{}, $_[0];
} # ____new

sub AUTOLOAD {
  my $method_name = our $AUTOLOAD;
  $method_name =~ s/.*:://;
  return if $method_name eq 'DESTROY';

  require Whatpm::CSS::Parser;
  my $prop_def = $Whatpm::CSS::Parser::Attr->{$method_name};

  if ($prop_def) {
    no strict 'refs';
    *{ $method_name } = sub {
      ## TODO: setter

      my $self = $_[0];
      my $value = $$self->{$prop_def->{key}};
      if ($value) {
        return $prop_def->{serialize}->($self, $prop_def->{css}, $value->[0]);
      } else {
        return "";
      }
      ## ISSUE: If one of shorthand component properties is !important?
    };
    goto &{ $AUTOLOAD };
  } else {
    require Carp;
    Carp::croak (qq<Can't locate method "$AUTOLOAD">);
  }
} # AUTOLOAD

use overload
    '@{}' => sub {
      tie my @list, ref $_[0], $_[0];
      return \@list;
    },
    fallback => 1;

sub TIEARRAY ($$) { $_[1] }

## |CSSStyleDeclaration| attributes

sub css_text ($;$) {
  ## TODO: setter

  ## NOTE: Where and how white space characters are inserted are 
  ## intentionally changed from those in browsers so that properties are
  ## more prettily printed.
  ## See <http://suika.fam.cx/gate/2005/sw/cssText> for what browsers do.
  ## TODO: Ordering issue.
  require Whatpm::CSS::Parser;
  my $self = $_[0];
  my $r = '';
  my %serialized;
  for (grep {$$self->{$_}} keys %$$self) {
    my $prop_def = $Whatpm::CSS::Parser::Key->{$_};
    next unless $prop_def;

    if ($prop_def->{serialize_multiple}) {
      unless ($serialized{$prop_def->{serialize_multiple}}) {
        $serialized{$prop_def->{serialize_multiple}} = 1;
        my $v = $prop_def->{serialize_multiple}->($self);
        for my $prop_name (sort {$a cmp $b} keys %$v) {
          $r .= '  ' . $prop_name . ': ' . $v->{$prop_name} . ";\n"
        }
      }
    } else {
      my $value = $$self->{$_};
      my $s = $prop_def->{serialize}->($self, $prop_def->{css}, $value->[0]);
      if (length $s) {
        $r .= '  ' . $prop_def->{css} . ': ' . $s;
        $r .= ' ! ' . $value->[1] if length $value->[1];
        $r .= ";\n";
      }
    }
  }
  return $r;
} # css_text

sub length ($) {
  require Whatpm::CSS::Parser;
  return scalar @{[grep {$_}
                   map { $Whatpm::CSS::Parser::Key->{$_} }
                   keys %${$_[0]}]->[$_[1]]};
} # length
*FETCHSIZE = \&length;

## TODO: STORESIZE

sub parent_rule ($) {
  return ${$_[0]}->{parent_rule};
} # parent_rule

## |CSSStyleDeclaration| methods

sub get_property_priority ($$) {
  my $prop_name = ''.$_[1];

  require Whatpm::CSS::Parser;
  my $prop_def = $Whatpm::CSS::Parser::Prop->{$prop_name};
  return '' unless defined $prop_def;

  my $v = ${$_[0]}->{$prop_def->{key}};
  return $v ? $v->[1] : '';
} # get_property_priority

sub item ($$) {
  require Whatpm::CSS::Parser;
  return '' if $_[1] < 0;
  ## TODO: ordering (should be same as that in |css_text|.
  my $v = [map {$_->{key}}
           grep {$_}
           map { $Whatpm::CSS::Parser::Key->{$_} }
           keys %${$_[0]}]->[$_[1]];
  return defined $v ? $v : '';
} # item
*FETCH = \&item;

## TODO: STORE, DELETE

sub EXISTS ($$) {
  return length $_[0]->item;
} # EXISTS

## TODO: Implement other methods and attributes

package Message::DOM::CSSComputedStyleDeclaration;
push our @ISA, 'Message::IF::CSSStyleDeclaration',
    'Message::IF::CSS2Properties';

sub ____new ($$$) {
  my $self = bless \{}, shift;
  $$self->{cascade} = shift; # Whatpm::CSS::Cascade object.
  $$self->{element} = shift; ## TODO: This link should be weaken?
  return $self;
} # ____new

sub AUTOLOAD {
  my $method_name = our $AUTOLOAD;
  $method_name =~ s/.*:://;
  return if $method_name eq 'DESTROY';

  require Whatpm::CSS::Parser;
  my $prop_def = $Whatpm::CSS::Parser::Attr->{$method_name};

  if ($prop_def) {
    no strict 'refs';
    *{ $method_name } = sub {
      ## TODO: setter

      my $self = $_[0];
      if ($prop_def->{compute} or $prop_def->{compute_multiple}) {
        my $value = $$self->{cascade}->get_computed_value
            ($$self->{element}, $prop_def->{css});
        if ($value) {
          return $prop_def->{serialize}->($self, $prop_def->{css}, $value);
        } else {
          return '';
        }
      } elsif ($prop_def->{serialize_multiple}) {
        my $v = $prop_def->{serialize_multiple}->($self);
        if (defined $v->{$prop_def->{css}}) {
          return $v->{$prop_def->{css}};
        } else {
          return '';
        }
      } else {
        ## TODO: This should be an error of the implementation.
        ## However, currently some shorthand properties does not have
        ## serializer.
        ## TODO: Remove {serialize} from shorthand properties, since
        ## they have no effect.
        warn "$0: No computed value function for $method_name";
        #die "$0: No computed value function for $method_name";
      }
    };
    goto &{ $AUTOLOAD };
  } else {
    require Carp;
    Carp::croak (qq<Can't locate method "$AUTOLOAD">);
  }
} # AUTOLOAD

use overload
    '@{}' => sub {
      tie my @list, ref $_[0], $_[0];
      return \@list;
    },
    fallback => 1;

sub TIEARRAY ($$) { $_[1] }

## |CSSStyleDeclaration| attributes

sub css_text ($;$) {
  ## TODO: error if modified

  my $self = shift;
  require Whatpm::CSS::Parser;

  ## NOTE: Where and how white space characters are inserted are 
  ## intentionally changed from those in browsers so that properties are
  ## more prettily printed.
  ## See <http://suika.fam.cx/gate/2005/sw/cssText> for what browsers do.
  ## TODO: ordering
  ## TODO: any spec?
  my $r = '';
  my %serialized;
  for my $prop_def (sort {$a->{css} cmp $b->{css}}
                    grep {$_->{compute} or
                          $_->{compute_multiple} or
                          $_->{serialize_multiple}}
                    values %$Whatpm::CSS::Parser::Prop) {
    if ($prop_def->{serialize_multiple}) {
      unless ($serialized{$prop_def->{serialize_multiple}}) {
        $serialized{$prop_def->{serialize_multiple}} = 1;
        my $v = $prop_def->{serialize_multiple}->($self);
        for my $prop_name (sort {$a cmp $b} keys %$v) {
          $r .= '  ' . $prop_name . ': ' . $v->{$prop_name} . ";\n"
        }
      }
    } else {
      my $prop_value = $$self->{cascade}->get_computed_value
          ($$self->{element}, $prop_def->{css});
      my $s = $prop_def->{serialize}->($self, $prop_def->{css}, $prop_value);
      if (length $s) {
        $r .= '  ' . $prop_def->{css} . ': ' . $s;
        $r .= ";\n";
      } else {
        ## NOTE: This should be an error of the implementation.
        $r .= "  /* $prop_def->{css}: ???; */\n";
      }
    }
  }

  ## ISSUE: Should we include CSS properties that are not supported?

  return $r;
} # css_text

## TODO: What should we enumerate is unclear.
sub length ($) {
  require Whatpm::CSS::Parser;
  return scalar @{[grep {$_}
                   values %$Whatpm::CSS::Parser::Key]};
} # length
*FETCHSIZE = \&length;

## TODO: STORESIZE

## |CSSStyleDeclaration| methods

sub get_property_priority ($$) { '' }

sub item ($$) {
  require Whatpm::CSS::Parser;
  return '' if $_[1] < 0;
  ## TODO: ordering (should be same as that in |css_text|.
  my $v = [sort {$a cmp $b}
           map {$_->{css}}
           grep {$_}
           values %$Whatpm::CSS::Parser::Key]->[$_[1]];
  return defined $v ? $v : '';
} # item
*FETCH = \&item;

## TODO: STORE, DELETE

sub EXISTS ($$) {
  return length $_[0]->item;
} # EXISTS

## TODO: members

package Message::IF::CSSStyleDeclaration;
package Message::IF::CSS2Properties;

1;
## $Date: 2008/01/14 11:18:49 $
1	wakaba	1.1	package Message::DOM::CSSStyleDeclaration;
2			use strict;
3	wakaba	1.12	our $VERSION=do{my @r=(q$Revision: 1.11 $=~/\d+/g);sprintf "%d."."%02d" x $#r,@r};
4	wakaba	1.11	push our @ISA, 'Message::IF::CSSStyleDeclaration',
5			'Message::IF::CSS2Properties';
6	wakaba	1.1
7			sub ____new ($) {
8			return bless \{}, $_[0];
9			} # ____new
10
11	wakaba	1.3	sub AUTOLOAD {
12			my $method_name = our $AUTOLOAD;
13			$method_name =~ s/.*:://;
14			return if $method_name eq 'DESTROY';
15
16			require Whatpm::CSS::Parser;
17			my $prop_def = $Whatpm::CSS::Parser::Attr->{$method_name};
18
19			if ($prop_def) {
20			no strict 'refs';
21			*{ $method_name } = sub {
22			## TODO: setter
23
24			my $self = $_[0];
25			my $value = $$self->{$prop_def->{key}};
26			if ($value) {
27			return $prop_def->{serialize}->($self, $prop_def->{css}, $value->[0]);
28			} else {
29	wakaba	1.10	return "";
30	wakaba	1.3	}
31	wakaba	1.8	## ISSUE: If one of shorthand component properties is !important?
32	wakaba	1.3	};
33			goto &{ $AUTOLOAD };
34			} else {
35			require Carp;
36			Carp::croak (qq<Can't locate method "$AUTOLOAD">);
37			}
38			} # AUTOLOAD
39
40	wakaba	1.11	use overload
41			'@{}' => sub {
42			tie my @list, ref $_[0], $_[0];
43			return \@list;
44			},
45			fallback => 1;
46
47			sub TIEARRAY ($$) { $_[1] }
48
49	wakaba	1.1	## \|CSSStyleDeclaration\| attributes
50
51	wakaba	1.2	sub css_text ($;$) {
52	wakaba	1.3	## TODO: setter
53
54	wakaba	1.9	## NOTE: Where and how white space characters are inserted are
55			## intentionally changed from those in browsers so that properties are
56			## more prettily printed.
57			## See <http://suika.fam.cx/gate/2005/sw/cssText> for what browsers do.
58			## TODO: Ordering issue.
59	wakaba	1.3	require Whatpm::CSS::Parser;
60			my $self = $_[0];
61			my $r = '';
62	wakaba	1.7	my %serialized;
63	wakaba	1.3	for (grep {$$self->{$_}} keys %$$self) {
64			my $prop_def = $Whatpm::CSS::Parser::Key->{$_};
65			next unless $prop_def;
66	wakaba	1.7
67			if ($prop_def->{serialize_multiple}) {
68			unless ($serialized{$prop_def->{serialize_multiple}}) {
69			$serialized{$prop_def->{serialize_multiple}} = 1;
70			my $v = $prop_def->{serialize_multiple}->($self);
71			for my $prop_name (sort {$a cmp $b} keys %$v) {
72			$r .= ' ' . $prop_name . ': ' . $v->{$prop_name} . ";\n"
73			}
74			}
75			} else {
76			my $value = $$self->{$_};
77			my $s = $prop_def->{serialize}->($self, $prop_def->{css}, $value->[0]);
78	wakaba	1.10	if (length $s) {
79	wakaba	1.7	$r .= ' ' . $prop_def->{css} . ': ' . $s;
80	wakaba	1.10	$r .= ' ! ' . $value->[1] if length $value->[1];
81	wakaba	1.7	$r .= ";\n";
82			}
83	wakaba	1.3	}
84			}
85			return $r;
86	wakaba	1.2	} # css_text
87
88	wakaba	1.11	sub length ($) {
89			require Whatpm::CSS::Parser;
90			return scalar @{[grep {$_}
91			map { $Whatpm::CSS::Parser::Key->{$_} }
92			keys %${$_[0]}]->[$_[1]]};
93			} # length
94			*FETCHSIZE = \&length;
95
96			## TODO: STORESIZE
97
98	wakaba	1.1	sub parent_rule ($) {
99			return ${$_[0]}->{parent_rule};
100			} # parent_rule
101
102	wakaba	1.7	## \|CSSStyleDeclaration\| methods
103
104			sub get_property_priority ($$) {
105			my $prop_name = ''.$_[1];
106
107			require Whatpm::CSS::Parser;
108			my $prop_def = $Whatpm::CSS::Parser::Prop->{$prop_name};
109			return '' unless defined $prop_def;
110
111			my $v = ${$_[0]}->{$prop_def->{key}};
112	wakaba	1.10	return $v ? $v->[1] : '';
113	wakaba	1.7	} # get_property_priority
114
115	wakaba	1.11	sub item ($$) {
116			require Whatpm::CSS::Parser;
117			return '' if $_[1] < 0;
118			## TODO: ordering (should be same as that in \|css_text\|.
119			my $v = [map {$_->{key}}
120			grep {$_}
121			map { $Whatpm::CSS::Parser::Key->{$_} }
122			keys %${$_[0]}]->[$_[1]];
123			return defined $v ? $v : '';
124			} # item
125			*FETCH = \&item;
126
127			## TODO: STORE, DELETE
128
129			sub EXISTS ($$) {
130			return length $_[0]->item;
131			} # EXISTS
132
133	wakaba	1.1	## TODO: Implement other methods and attributes
134
135	wakaba	1.4	package Message::DOM::CSSComputedStyleDeclaration;
136	wakaba	1.11	push our @ISA, 'Message::IF::CSSStyleDeclaration',
137			'Message::IF::CSS2Properties';
138	wakaba	1.4
139			sub ____new ($$$) {
140			my $self = bless \{}, shift;
141			$$self->{cascade} = shift; # Whatpm::CSS::Cascade object.
142			$$self->{element} = shift; ## TODO: This link should be weaken?
143			return $self;
144			} # ____new
145
146	wakaba	1.7	sub AUTOLOAD {
147			my $method_name = our $AUTOLOAD;
148			$method_name =~ s/.*:://;
149			return if $method_name eq 'DESTROY';
150
151			require Whatpm::CSS::Parser;
152			my $prop_def = $Whatpm::CSS::Parser::Attr->{$method_name};
153
154			if ($prop_def) {
155			no strict 'refs';
156			*{ $method_name } = sub {
157			## TODO: setter
158
159			my $self = $_[0];
160	wakaba	1.12	if ($prop_def->{compute} or $prop_def->{compute_multiple}) {
161			my $value = $$self->{cascade}->get_computed_value
162			($$self->{element}, $prop_def->{css});
163			if ($value) {
164			return $prop_def->{serialize}->($self, $prop_def->{css}, $value);
165			} else {
166			return '';
167			}
168			} elsif ($prop_def->{serialize_multiple}) {
169			my $v = $prop_def->{serialize_multiple}->($self);
170			if (defined $v->{$prop_def->{css}}) {
171			return $v->{$prop_def->{css}};
172			} else {
173			return '';
174			}
175	wakaba	1.7	} else {
176	wakaba	1.12	## TODO: This should be an error of the implementation.
177			## However, currently some shorthand properties does not have
178			## serializer.
179			## TODO: Remove {serialize} from shorthand properties, since
180			## they have no effect.
181			warn "$0: No computed value function for $method_name";
182			#die "$0: No computed value function for $method_name";
183	wakaba	1.7	}
184			};
185			goto &{ $AUTOLOAD };
186			} else {
187			require Carp;
188			Carp::croak (qq<Can't locate method "$AUTOLOAD">);
189			}
190			} # AUTOLOAD
191
192	wakaba	1.11	use overload
193			'@{}' => sub {
194			tie my @list, ref $_[0], $_[0];
195			return \@list;
196			},
197			fallback => 1;
198
199			sub TIEARRAY ($$) { $_[1] }
200
201			## \|CSSStyleDeclaration\| attributes
202
203	wakaba	1.4	sub css_text ($;$) {
204			## TODO: error if modified
205
206			my $self = shift;
207			require Whatpm::CSS::Parser;
208
209	wakaba	1.9	## NOTE: Where and how white space characters are inserted are
210			## intentionally changed from those in browsers so that properties are
211			## more prettily printed.
212			## See <http://suika.fam.cx/gate/2005/sw/cssText> for what browsers do.
213	wakaba	1.4	## TODO: ordering
214			## TODO: any spec?
215			my $r = '';
216	wakaba	1.7	my %serialized;
217	wakaba	1.6	for my $prop_def (sort {$a->{css} cmp $b->{css}}
218	wakaba	1.7	grep {$_->{compute} or
219			$_->{compute_multiple} or
220			$_->{serialize_multiple}}
221	wakaba	1.6	values %$Whatpm::CSS::Parser::Prop) {
222	wakaba	1.7	if ($prop_def->{serialize_multiple}) {
223			unless ($serialized{$prop_def->{serialize_multiple}}) {
224			$serialized{$prop_def->{serialize_multiple}} = 1;
225			my $v = $prop_def->{serialize_multiple}->($self);
226			for my $prop_name (sort {$a cmp $b} keys %$v) {
227			$r .= ' ' . $prop_name . ': ' . $v->{$prop_name} . ";\n"
228			}
229			}
230	wakaba	1.5	} else {
231	wakaba	1.7	my $prop_value = $$self->{cascade}->get_computed_value
232			($$self->{element}, $prop_def->{css});
233			my $s = $prop_def->{serialize}->($self, $prop_def->{css}, $prop_value);
234	wakaba	1.10	if (length $s) {
235	wakaba	1.7	$r .= ' ' . $prop_def->{css} . ': ' . $s;
236			$r .= ";\n";
237			} else {
238			## NOTE: This should be an error of the implementation.
239			$r .= " /* $prop_def->{css}: ???; */\n";
240			}
241	wakaba	1.4	}
242			}
243	wakaba	1.6
244			## ISSUE: Should we include CSS properties that are not supported?
245
246	wakaba	1.4	return $r;
247			} # css_text
248
249	wakaba	1.11	## TODO: What should we enumerate is unclear.
250			sub length ($) {
251			require Whatpm::CSS::Parser;
252			return scalar @{[grep {$_}
253			values %$Whatpm::CSS::Parser::Key]};
254			} # length
255			*FETCHSIZE = \&length;
256
257			## TODO: STORESIZE
258
259	wakaba	1.7	## \|CSSStyleDeclaration\| methods
260
261	wakaba	1.10	sub get_property_priority ($$) { '' }
262	wakaba	1.7
263	wakaba	1.11	sub item ($$) {
264			require Whatpm::CSS::Parser;
265			return '' if $_[1] < 0;
266			## TODO: ordering (should be same as that in \|css_text\|.
267			my $v = [sort {$a cmp $b}
268			map {$_->{css}}
269			grep {$_}
270			values %$Whatpm::CSS::Parser::Key]->[$_[1]];
271			return defined $v ? $v : '';
272			} # item
273			*FETCH = \&item;
274
275			## TODO: STORE, DELETE
276
277			sub EXISTS ($$) {
278			return length $_[0]->item;
279			} # EXISTS
280
281	wakaba	1.4	## TODO: members
282
283	wakaba	1.1	package Message::IF::CSSStyleDeclaration;
284	wakaba	1.11	package Message::IF::CSS2Properties;
285	wakaba	1.1
286			1;
287	wakaba	1.12	## $Date: 2008/01/14 11:18:49 $