1CSS::DOM::PropertyParseUrs(e3r)Contributed Perl DocumentCaStSi:o:nDOM::PropertyParser(3)
2
3
4

NAME

6       CSS::DOM::PropertyParser - Parser for CSS property values
7

VERSION

9       Version 0.17
10

SYNOPSIS

12         use CSS::DOM::PropertyParser;
13
14         $spec = new CSS::DOM::PropertyParser; # empty
15         # OR
16         $spec = $CSS::DOM::PropertyParser::Default->clone;
17
18         $spec->add_property(
19          overflow => {
20           format => 'visible|hidden|scroll|auto',
21           default => 'visible',
22           inherit => 0,
23          }
24         );
25
26         $hashref = $spec->get_property('overflow');
27
28         $hashref = $spec->delete_property('overflow');
29
30         @names = $spec->property_names;
31

DESCRIPTION

33       Objects of this class provide lists of supported properties for
34       CSS::DOM style sheets. They also describe the syntax and parsing of
35       those properties' values.
36
37       Some CSS properties simply have their own values (e.g., overflow); some
38       are abbreviated forms of several other properties (e.g., font). These
39       are referred to in this documentation as 'simple' and 'shorthand'
40       properties.
41

CONSTRUCTOR

43       "$spec = new CSS::DOM::PropertyParser" returns an object that does not
44       recognise any properties, to which you can add your own properties.
45
46       There are two parser objects that come with this module. These are
47       $CSS::DOM::PropertyParser::CSS21, which contains all of CSS 2.1, and
48       $CSS::DOM::PropertyParser::Default, which is currently identical to the
49       former, but to which parts of CSS 3 which eventually be added.
50
51       If one of the default specs will do, you don't need a constructor.
52       Simply pass it to the CSS::DOM constructor. If you want to modify it,
53       clone it first, using the "clone" method (as shown in the "SYNOPSIS").
54       It is often convenient to clone the $Default spec and delete those
55       properties that are not supported.
56

METHODS

58       clone
59           Returns a deep clone of the object. (It's deep so that you can
60           modify the hashes/arrays inside it without modifying the original.)
61
62       add_property ( $name, \%spec )
63           Adds the specification for the named property. See "HOW INDIVIDUAL
64           PROPERTIES ARE SPECIFIED", below.
65
66       get_property ( $name )
67           Returns the hashref passed to the previous method.
68
69       delete_property ( $name )
70           Deletes the property and returns the hash ref.
71
72       property_names
73           Returns a list of the names of supported properties.
74
75       subproperty_names ( $name )
76           Returns a list of the names of $name's sub-properties if it is a
77           shorthand property.
78
79       match
80           Currently for internal use only. See the source code for
81           documentation.  Use at your own risk.
82

HOW INDIVIDUAL PROPERTIES ARE SPECIFIED

84       Before you read this the first time, look at the "Example" below, and
85       then come back and use this for reference.
86
87       The specification for an individual property is a hash ref. There are
88       several keys that each hash ref can have:
89
90       format
91           This is set to a string that describes the format of the property.
92           The syntax used is based on the CSS 2.1 spec, but is not exactly
93           the same.  Unlike regular expressions, these formats are applied to
94           properties on a token-by-token basis, not one character at a time.
95           (This means that "100|200" cannot be written as "[1|2]00", as that
96           would mean "1 00 | 2 00".)
97
98           Whitespace is ignored in the format and in the CSS property except
99           as a token separator.
100
101           There are several metachars (in order of precedence):
102
103            [...]      grouping (like (?:...) )
104            (...)      capturing group (just like a regexp)
105            ?          optional
106            *          zero or more
107            +          one or more
108            ||         alternates that can come in any order and are optional,
109                       but at least one must be specified  (the order will be
110                       retained if possible)
111            |          alternates, exactly one of which is required
112
113           In addition, the following datatypes can be specified in angle
114           brackets:
115
116            <angle>       A number with a 'deg', 'rad' or 'grad' suffix
117            <attr>        attr(...)
118            <colour>      (You can omit the 'u' if you want to.) One of CSS's
119                          predefined colour or system colour names, or a #
120                          followed by 3 or 6 hex digits, or the 'rgb(...)'
121                          format (rgba is supported, too)
122            <counter>     counter(...)
123            <frequency>   A unit of Hz or kHz
124            <identifier>  An identifier token
125            <integer>     An integer (really?!)
126            <length>      Number followed by a length unit (em, ex, px, in, cm,
127                          mm, pt, pc)
128            <number>      A number token
129            <percentage>  Number followed by %
130            <shape>       rect(...)
131            <string>      A string token
132            <str/words>   A sequence of identifiers or a single string (e.g., a
133                          font name)
134            <time>        A unit of seconds or milliseconds
135            <url>         A URL token
136
137           The format for a shorthand property can contain the name of a sub-
138           property in single ASCII quotes.
139
140           All other characters are understood verbatim.
141
142           It is not necessary to include the word 'inherit' in the format,
143           since every property supports that.
144
145           "<counter>" makes use of the specification for the list-style-type
146           property. So if you modify the latter, it will affect "<counter>"
147           as well.
148
149       default
150           The default value. This only applies to simple properties.
151
152       inherit
153           Whether the property is inherited.
154
155       special_values
156           A hash ref of values that are replaced with other values (e.g.,
157           "caption => '13px sans-serif'".) The keys are lowercase identifier
158           names.
159
160           This feature only applies to single identifiers. In fact, it exists
161           solely for the font property's use.
162
163       list
164           Set to true if the property is a list of values. The capturing
165           parentheses in the format determine the individual values of the
166           list.
167
168           This applies to simple properties only.
169
170       properties
171           For a shorthand property, list the sub-properties here. The keys
172           are the property names. The values are array refs. The elements
173           within the arrays are numbers indicating which captures in the
174           format are to be used for the sub-property's value. They are tried
175           one after the other. Whichever is the first that matches (null
176           matches not counting) is used.
177
178           Sub-properties that are referenced in the "format" need not be
179           listed here.
180
181       serialise
182           For shorthand properties only. Set this to a subroutine that
183           serialises the property. It is called with a hashref of sub-
184           properties as its sole argument. The values of the hash are blank
185           for properties that are set to their initial values. This sub is
186           only called when all sub-properties are set.
187
188   Example
189         our $CSS21 = new CSS::DOM::PropertyParser;
190         my %properties = (
191           azimuth => {
192            format => '<angle> |
193                        [ left-side | far-left | left | center-left |
194                          center | center-right | right | far-right |
195                          right-inside ] || behind
196                       | leftwards | rightwards',
197            default => '0',
198            inherit => 1,
199           },
200
201          'background-attachment' => {
202            format  => 'scroll | fixed',
203            default => 'scroll',
204            inherit => 0,
205           },
206
207          'background-color' => {
208            format  => '<colour>',
209            default => 'transparent',
210            inherit => 0,
211           },
212
213          'background-image' => {
214            format => '<url> | none',
215            default => 'none',
216            inherit => 0,
217           },
218
219          'background-position' => {
220            format => '[<percentage>|<length>|left|right]
221                        [<percentage>|<length>|top|center|bottom]? |
222                       [top|bottom] [left|center|right]? |
223                       center [<percentage>|<length>|left|right|top|bottom|
224                               center]?',
225            default => '0% 0%',
226            inherit => 0,
227           },
228
229          'background-repeat' => {
230            format => 'repeat | repeat-x | repeat-y | no-repeat',
231            default => 'repeat',
232            inherit => 0,
233           },
234
235           background => {
236            format => "'background-color' || 'background-image' ||
237                       'background-repeat' || 'background-attachment' ||
238                       'background-position'",
239            serialise => sub {
240             my $p = shift;
241             my $ret = '';
242             for(qw/ background-color background-image background-repeat
243                     background-attachment background-position /) {
244              length $p->{$_} and $ret .= "$p->{$_} ";
245             }
246             chop $ret;
247             length $ret ? $ret : 'none'
248            },
249           },
250
251          'border-collapse' => {
252            format => 'collapse | separate',
253            inherit => 1,
254            default => 'separate',
255           },
256
257          'border-color' => {
258            format => '(<colour>)[(<colour>)[(<colour>)(<colour>)?]?]?',
259            properties => {
260             'border-top-color' => [1],
261             'border-right-color' => [2,1],
262             'border-bottom-color' => [3,1],
263             'border-left-color' => [4,2,1],
264            },
265            serialise => sub {
266              my $p = shift;
267              my @vals = map $p->{"border-$_-color"},
268                             qw/top right bottom left/;
269              $vals[3] eq $vals[1] and pop @vals,
270              $vals[2] eq $vals[0] and pop @vals,
271              $vals[1] eq $vals[0] and pop @vals;
272              return join " ", @vals;
273            },
274           },
275
276          'border-spacing' => {
277            format => '<length> <length>?',
278            default => '0',
279            inherit => 1,
280           },
281
282          'border-style' => {
283            format => "(none|hidden|dotted|dashed|solid|double|groove|ridge|
284                        inset|outset)
285                       [ (none|hidden|dotted|dashed|solid|double|groove|
286                          ridge|inset|outset)
287                         [ (none|hidden|dotted|dashed|solid|double|groove|
288                            ridge|inset|outset)
289                           (none|hidden|dotted|dashed|solid|double|groove|
290                            ridge|inset|outset)?
291                         ]?
292                       ]?",
293            properties => {
294             'border-top-style' => [1],
295             'border-right-style' => [2,1],
296             'border-bottom-style' => [3,1],
297             'border-left-style' => [4,2,1],
298            },
299            serialise => sub {
300              my $p = shift;
301              my @vals = map $p->{"border-$_-style"},
302                             qw/top right bottom left/;
303              $vals[3] eq $vals[1] and pop @vals,
304              $vals[2] eq $vals[0] and pop @vals,
305              $vals[1] eq $vals[0] and pop @vals;
306              return join " ", map $_||'none', @vals;
307            },
308           },
309
310          'border-top' => {
311            format => "'border-top-width' || 'border-top-style' ||
312                       'border-top-color'",
313            serialise => sub {
314              my $p = shift;
315              my $ret = '';
316              for(qw/ width style color /) {
317                length $p->{"border-top-$_"}
318                  and $ret .= $p->{"border-top-$_"}." ";
319              }
320              chop $ret;
321              $ret
322            },
323           },
324          'border-right' => {
325            format => "'border-right-width' || 'border-right-style' ||
326                       'border-right-color'",
327            serialise => sub {
328              my $p = shift;
329              my $ret = '';
330              for(qw/ width style color /) {
331                length $p->{"border-right-$_"}
332                  and $ret .= $p->{"border-right-$_"}." ";
333              }
334              chop $ret;
335              $ret
336            },
337           },
338          'border-bottom' => {
339            format => "'border-bottom-width' || 'border-bottom-style' ||
340                       'border-bottom-color'",
341            serialise => sub {
342              my $p = shift;
343              my $ret = '';
344              for(qw/ width style color /) {
345                length $p->{"border-bottom-$_"}
346                  and $ret .= $p->{"border-bottom-$_"}." ";
347              }
348              chop $ret;
349              $ret
350            },
351           },
352          'border-left' => {
353            format => "'border-left-width' || 'border-left-style' ||
354                       'border-left-color'",
355            serialise => sub {
356              my $p = shift;
357              my $ret = '';
358              for(qw/ width style color /) {
359                length $p->{"border-left-$_"}
360                  and $ret .= $p->{"border-left-$_"}." ";
361              }
362              chop $ret;
363              $ret
364            },
365           },
366
367          'border-top-color' => {
368            format => '<colour>',
369            default => "",
370            inherit => 0,
371           },
372          'border-right-color' => {
373            format => '<colour>',
374            default => "",
375            inherit => 0,
376           },
377          'border-bottom-color' => {
378            format => '<colour>',
379            default => "",
380            inherit => 0,
381           },
382          'border-left-color' => {
383            format => '<colour>',
384            default => "",
385            inherit => 0,
386           },
387
388          'border-top-style' => {
389            format => 'none|hidden|dotted|dashed|solid|double|groove|ridge|
390                       inset|outset',
391            default => 'none',
392            inherit => 0,
393           },
394          'border-right-style' => {
395            format => 'none|hidden|dotted|dashed|solid|double|groove|ridge|
396                       inset|outset',
397            default => 'none',
398            inherit => 0,
399           },
400          'border-bottom-style' => {
401            format => 'none|hidden|dotted|dashed|solid|double|groove|ridge|
402                       inset|outset',
403            default => 'none',
404            inherit => 0,
405           },
406          'border-left-style' => {
407            format => 'none|hidden|dotted|dashed|solid|double|groove|ridge|
408                       inset|outset',
409            default => 'none',
410            inherit => 0,
411           },
412
413          'border-top-width' => {
414            format => '<length>|thin|thick|medium',
415            default => 'medium',
416            inherit => 0,
417           },
418          'border-right-width' => {
419            format => '<length>|thin|thick|medium',
420            default => 'medium',
421            inherit => 0,
422           },
423          'border-bottom-width' => {
424            format => '<length>|thin|thick|medium',
425            default => 'medium',
426            inherit => 0,
427           },
428          'border-left-width' => {
429            format => '<length>|thin|thick|medium',
430            default => 'medium',
431            inherit => 0,
432           },
433
434          'border-width' => {
435            format => "(<length>|thin|thick|medium)
436                       [ (<length>|thin|thick|medium)
437                         [ (<length>|thin|thick|medium)
438                           (<length>|thin|thick|medium)?
439                         ]?
440                       ]?",
441            properties => {
442             'border-top-width' => [1],
443             'border-right-width' => [2,1],
444             'border-bottom-width' => [3,1],
445             'border-left-width' => [4,2,1],
446            },
447            serialise => sub {
448              my $p = shift;
449              my @vals = map $p->{"border-$_-width"},
450                             qw/top right bottom left/;
451              $vals[3] eq $vals[1] and pop @vals,
452              $vals[2] eq $vals[0] and pop @vals,
453              $vals[1] eq $vals[0] and pop @vals;
454              return join " ", map length $_ ? $_ : 'medium', @vals;
455            },
456           },
457
458           border => {
459            format => "(<length>|thin|thick|medium) ||
460                       (none|hidden|dotted|dashed|solid|double|groove|ridge|
461                        inset|outset) || (<colour>)",
462            properties => {
463             'border-top-width' => [1],
464             'border-right-width' => [1],
465             'border-bottom-width' => [1],
466             'border-left-width' => [1],
467             'border-top-style' => [2],
468             'border-right-style' => [2],
469             'border-bottom-style' => [2],
470             'border-left-style' => [2],
471             'border-top-color' => [3],
472             'border-right-color' => [3],
473             'border-bottom-color' => [3],
474             'border-left-color' => [3],
475            },
476            serialise => sub {
477              my $p = shift;
478              my $ret = '';
479              for(qw/ width style color /) {
480                my $temp = $p->{"border-top-$_"};
481                for my $side(qw/ right bottom left /) {
482                  $temp eq $p->{"border-$side-$_"} or return "";
483                }
484                length $temp and $ret .= "$temp ";
485              }
486              chop $ret;
487              $ret
488            },
489           },
490
491           bottom => {
492            format => '<length>|<percentage>|auto',
493            default => 'auto',
494            inherit => 0,
495           },
496
497          'caption-side' => {
498            format => 'top|bottom',
499            default => 'top',
500            inherit => 1,
501           },
502
503           clear => {
504            format => 'none|left|right|both',
505            default => 'none',
506            inherit => 0,
507           },
508
509           clip => {
510            format => '<shape>|auto',
511            default => 'auto',
512            inherit => 0,
513           },
514
515           color => {
516            format => '<colour>',
517            default => 'rgba(0,0,0,1)',
518            inherit => 1,
519           },
520
521           content => {
522            format => '( normal|none|open-quote|close-quote|no-open-quote|
523                         no-close-quote|<string>|<url>|<counter>|<attr> )+',
524            default => 'normal',
525            inherit => 0,
526            list => 1,
527           },
528
529          'counter-increment' => {
530            format => '[(<identifier>) (<integer>)? ]+ | none',
531            default => 'none',
532            inherit => 0,
533            list => 1,
534           },
535          'counter-reset' => {
536            format => '[(<identifier>) (<integer>)? ]+ | none',
537            default => 'none',
538            inherit => 0,
539            list => 1,
540           },
541
542          'cue-after' => {
543            format => '<url>|none',
544            default => 'none',
545            inherit => 0,
546           },
547          'cue-before' => {
548            format => '<url>|none',
549            default => 'none',
550            inherit => 0,
551           },
552
553           cue =>{
554            format => '(<url>|none) (<url>|none)?',
555            properties => {
556             'cue-before' => [1],
557             'cue-after' => [2,1],
558            },
559            serialise => sub {
560              my $p = shift;
561              my @vals = @$p{"cue-before", "cue-after"};
562              $vals[1] eq $vals[0] and pop @vals;
563              return join " ", map length $_ ? $_ : 'none', @vals;
564            },
565           },
566
567           cursor => {
568            format => '[(<url>) ,]*
569                       (auto|crosshair|default|pointer|move|e-resize|
570                        ne-resize|nw-resize|n-resize|se-resize|sw-resize|
571                        s-resize|w-resize|text|wait|help|progress)',
572            default => 'auto',
573            inherit => 1,
574            list => 1,
575           },
576
577           direction => {
578            format => 'ltr|rtl',
579            default => 'ltr',
580            inherit => 1,
581           },
582
583           display => {
584            format => 'inline|block|list-item|run-in|inline-block|table|
585                       inline-table|table-row-group|table-header-group|
586                       table-footer-group|table-row|table-column-group|
587                       table-column|table-cell|table-caption|none',
588            default => 'inline',
589            inherit => 0,
590           },
591
592           elevation => {
593            format => '<angle>|below|level|above|higher|lower',
594            default => '0',
595            inherit => 1,
596           },
597
598          'empty-cells' => {
599            format => 'show|hide',
600            default => 'show',
601            inherit => 1,
602           },
603
604           float => {
605            format => 'left|right|none',
606            default => 'none',
607            inherit => 0,
608           },
609
610          'font-family' => { # aka typeface
611            format => '(serif|sans-serif|cursive|fantasy|monospace|
612                        <str/words>)
613                       [,(serif|sans-serif|cursive|fantasy|monospace|
614                          <str/words>)]*',
615            default => 'Times, serif',
616            inherit => 1,
617            list => 1,
618           },
619
620          'font-size' => {
621            format => 'xx-small|x-small|small|medium|large|x-large|xx-large|
622                       larger|smaller|<length>|<percentage>',
623            default => 'medium',
624            inherit => 1,
625           },
626
627          'font-style' => {
628            format => 'normal|italic|oblique',
629            default => 'normal',
630            inherit => 1,
631           },
632
633          'font-variant' => {
634            format => 'normal | small-caps',
635            default => 'normal',
636            inherit => 1,
637           },
638
639          'font-weight' => {
640            format => 'normal|bold|bolder|lighter|
641                       100|200|300|400|500|600|700|800|900',
642            default => 'normal',
643            inherit => 1,
644           },
645
646           font => {
647            format => "[ 'font-style' || 'font-variant' || 'font-weight' ]?
648                       'font-size' [ / 'line-height' ]? 'font-family'",
649            special_values => {
650              caption => '13px Lucida Grande, sans-serif',
651              icon => '13px Lucida Grande, sans-serif',
652              menu => '13px Lucida Grande, sans-serif',
653             'message-box' => '13px Lucida Grande, sans-serif',
654             'small-caption' => '11px Lucida Grande, sans-serif',
655             'status-bar' => '10px Lucida Grande, sans-serif',
656            },
657            serialise => sub {
658              my $p = shift;
659              my $ret = '';
660              for(qw/ style variant weight /) {
661                length $p->{"font-$_"}
662                  and $ret .= $p->{"font-$_"}." ";
663              }
664              $ret .= length $p->{'font-size'}
665                      ? $p->{'font-size'}
666                      : 'medium';
667              $ret .= "/$p->{'line-height'}" if length $p->{'line-height'};
668              $ret .= " " . ($p->{'font-family'} || "Times, serif");
669              $ret
670            },
671           },
672
673           height => {
674            format => '<length>|<percentage>|auto',
675            default => 'auto',
676            inherit => 0,
677           },
678
679           left => {
680            format => '<length>|<percentage>|auto',
681            default => 'auto',
682            inherit => 0,
683           },
684
685          'letter-spacing' => { # aka tracking
686            format => 'normal|<length>',
687            default => 'normal',
688            inherit => 1,
689           },
690
691          'line-height' => { # aka leading
692            format => 'normal|<number>|<length>|<percentage>',
693            default => "normal",
694            inherit => 1,
695           },
696
697          'list-style-image' => {
698            format => '<url>|none',
699            default => 'none',
700            inherit => 1,
701           },
702
703          'list-style-position' => {
704            format => 'inside|outside',
705            default => 'outside',
706            inherit => 1,
707           },
708
709          'list-style-type' => {
710            format => 'disc|circle|square|decimal|decimal-leading-zero|
711                       lower-roman|upper-roman|lower-greek|lower-latin|
712                       upper-latin|armenian|georgian|lower-alpha|
713                       upper-alpha',
714            default => 'disc',
715            inherit => 1,
716           },
717
718          'list-style' => {
719            format => "'list-style-type'||'list-style-position'||
720                       'list-style-image'",
721            serialise => sub {
722              my $p = shift;
723              my $ret = '';
724              for(qw/ type position image /) {
725                $p->{"list-style-$_"}
726                  and $ret .= $p->{"list-style-$_"}." ";
727              }
728              chop $ret;
729              $ret || 'disc'
730            },
731           },
732
733          'margin-right' => {
734            format => '<length>|<percentage>|auto',
735            default => '0',
736            inherit => 0,
737           },
738          'margin-left' => {
739            format => '<length>|<percentage>|auto',
740            default => '0',
741            inherit => 0,
742           },
743          'margin-top' => {
744            format => '<length>|<percentage>|auto',
745            default => '0',
746            inherit => 0,
747           },
748          'margin-bottom' => {
749            format => '<length>|<percentage>|auto',
750            default => '0',
751            inherit => 0,
752           },
753
754           margin => {
755            format => "(<length>|<percentage>|auto)
756                       [ (<length>|<percentage>|auto)
757                         [ (<length>|<percentage>|auto)
758                           (<length>|<percentage>|auto)?
759                         ]?
760                       ]?",
761            properties => {
762             'margin-top' => [1],
763             'margin-right' => [2,1],
764             'margin-bottom' => [3,1],
765             'margin-left' => [4,2,1],
766            },
767            serialise => sub {
768              my $p = shift;
769              my @vals = map $p->{"margin-$_"},
770                             qw/top right bottom left/;
771              $vals[3] eq $vals[1] and pop @vals,
772              $vals[2] eq $vals[0] and pop @vals,
773              $vals[1] eq $vals[0] and pop @vals;
774              return join " ", map $_ || 0, @vals;
775            },
776           },
777
778          'max-height' => {
779            format => '<length>|<percentage>|none',
780            default => 'none',
781            inherit => 0,
782           },
783          'max-width' => {
784            format => '<length>|<percentage>|none',
785            default => 'none',
786            inherit => 0,
787           },
788          'min-height' => {
789            format => '<length>|<percentage>|none',
790            default => 'none',
791            inherit => 0,
792           },
793          'min-width' => {
794            format => '<length>|<percentage>|none',
795            default => 'none',
796            inherit => 0,
797           },
798
799           orphans => {
800            format => '<integer>',
801            default => 2,
802            inherit => 1,
803           },
804
805          'outline-color' => {
806            format => '<colour>|invert',
807            default => 'invert',
808            inherit => 0,
809           },
810
811          'outline-style' => {
812            format => 'none|hidden|dotted|dashed|solid|double|groove|ridge|
813                       inset|outset',
814            default => 'none',
815            inherit => 0,
816           },
817
818          'outline-width' => {
819            format => '<length>|thin|thick|medium',
820            default => 'medium',
821            inherit => 0,
822           },
823
824           outline => {
825            format => "'outline-color'||'outline-style'||'outline-width'",
826            serialise => sub {
827              my $p = shift;
828              my $ret = '';
829              for(qw/ color style width /) {
830                length $p->{"outline-$_"}
831                  and $ret .= $p->{"outline-$_"}." ";
832              }
833              chop $ret;
834              length $ret ? $ret : 'invert';
835            },
836           },
837
838           overflow => {
839            format => 'visible|hidden|scroll|auto',
840            default => 'visible',
841            inherit => 0,
842           },
843
844          'padding-top' => {
845            format => '<length>|<percentage>',
846            default => 0,
847            inherit => 0,
848           },
849          'padding-right' => {
850            format => '<length>|<percentage>',
851            default => 0,
852            inherit => 0,
853           },
854          'padding-bottom' => {
855            format => '<length>|<percentage>',
856            default => 0,
857            inherit => 0,
858           },
859          'padding-left' => {
860            format => '<length>|<percentage>',
861            default => 0,
862            inherit => 0,
863           },
864
865           padding => {
866            format => "(<length>|<percentage>)
867                       [ (<length>|<percentage>)
868                         [ (<length>|<percentage>)
869                           (<length>|<percentage>)?
870                         ]?
871                       ]?",
872            properties => {
873             'padding-top' => [1],
874             'padding-right' => [2,1],
875             'padding-bottom' => [3,1],
876             'padding-left' => [4,2,1],
877            },
878            serialise => sub {
879              my $p = shift;
880              my @vals = map $p->{"padding-$_"},
881                             qw/top right bottom left/;
882              $vals[3] eq $vals[1] and pop @vals,
883              $vals[2] eq $vals[0] and pop @vals,
884              $vals[1] eq $vals[0] and pop @vals;
885              return join " ", map $_ || 0, @vals;
886            },
887           },
888
889          'page-break-after' => {
890            format => 'auto|always|avoid|left|right',
891            default => 'auto',
892            inherit => 0,
893           },
894          'page-break-before' => {
895            format => 'auto|always|avoid|left|right',
896            default => 'auto',
897            inherit => 0,
898           },
899
900          'page-break-inside' => {
901            format => 'avoid|auto',
902            default => 'auto',
903            inherit => 1,
904           },
905
906          'pause-after' => {
907             format => '<time>|<percentage>',
908             default => 0,
909             inherit => 0,
910           },
911          'pause-before' => {
912             format => '<time>|<percentage>',
913             default => 0,
914             inherit => 0,
915           },
916
917           pause => {
918            format => '(<time>|<percentage>)(<time>|<percentage>)?',
919            properties => {
920             'pause-before' => [1],
921             'pause-after' => [2,1],
922            }
923           },
924
925          'pitch-range' => {
926            format => '<number>',
927            default => 50,
928            inherit => 1,
929           },
930
931           pitch => {
932            format => '<frequency>|x-low|low|medium|high|x-high',
933            default => 'medium',
934            inherit => 1,
935           },
936
937          'play-during' => {
938             format => '<url> [ mix || repeat ]? | auto | none',
939             default => 'auto',
940             inherit => 0,
941           },
942
943           position => {
944            format => 'static|relative|absolute|fixed',
945            default => 'relative',
946            inherit => 0,
947           },
948
949           quotes => {
950            format => '[(<string>)(<string>)]+|none',
951            default => 'none',
952            inherit => 1,
953            list => 1,
954           },
955
956           richness => {
957            format => '<number>',
958            default => 50,
959            inherit => 1,
960           },
961
962           right => {
963            format => '<length>|<percentage>|auto',
964            default => 'auto',
965            inherit => 0,
966           },
967
968          'speak-header' => {
969            format => 'once|always',
970            default => 'once',
971            inherit => 1,
972           },
973
974          'speak-numeral' => {
975            format => 'digits|continuous',
976            default => 'continuous',
977            inherit => 1,
978           },
979
980          'speak-punctuation' => {
981            format => 'code|none',
982            default => 'none',
983            inherit => 1,
984           },
985
986           speak => {
987            format => 'normal|none|spell-out',
988            default => 'normal',
989            inherit => 1,
990           },
991
992          'speech-rate' => {
993            format => '<number>|x-slow|slow|medium|fast|x-fast|faster|slower',
994            default => 'medium',
995            inherit => 1,
996           },
997
998           stress => {
999            format => '<number>',
1000            default => 50,
1001            inherit => 1,
1002           },
1003
1004          'table-layout' => {
1005            format => 'auto|fixed',
1006            default => 'auto',
1007            inherit => 0,
1008           },
1009
1010          'text-align' => {
1011            format => 'left|right|center|justify|auto',
1012            default => 'auto',
1013            inherit => 1,
1014           },
1015
1016          'text-decoration' => {
1017            format => 'none | underline||overline||line-through||blink ',
1018            default => 'none',
1019            inherit => 0,
1020           },
1021
1022          'text-indent' => {
1023            format => '<length>|<percentage>',
1024            default => 0,
1025            inherit => 1,
1026           },
1027
1028          'text-transform' => {
1029            format => 'capitalize|uppercase|lowercase|none',
1030            default => 'none',
1031            inherit => 1,
1032           },
1033
1034           top => {
1035            format => '<length>|<percentage>|auto',
1036            default => 'auto',
1037            inherit => 0,
1038           },
1039
1040          'unicode-bidi' => {
1041            format => 'normal|embed|bidi-override',
1042            default => 'normal',
1043            inherit => 0,
1044           },
1045
1046          'vertical-align' => {
1047            format => 'baseline|sub|super|top|text-top|middle|bottom|
1048                       text-bottom|<percentage>|<length>',
1049            default => 'baseline',
1050            inherit => 0,
1051           },
1052
1053           visibility => {
1054            format => 'visible|hidden|collapse',
1055            default => 'visible',
1056            inherit => 1,
1057           },
1058
1059          'voice-family' => {
1060            format => '(male|female|child|<str/words>)
1061                       [, (male|female|child|<str/words>) ]*',
1062            default => '',
1063            inherit => 1,
1064            list => 1,
1065           },
1066
1067           volume => {
1068            format => '<number>|<percentage>|silent|x-soft|soft|medium|loud|
1069                       x-loud',
1070            default => 'medium',
1071            inherit => 1,
1072           },
1073
1074          'white-space' =>   {
1075            format => 'normal|pre|nowrap|pre-wrap|pre-line',
1076            default => 'normal',
1077            inherit => 1,
1078           },
1079
1080           widows => {
1081            format => '<integer>',
1082            default => 2,
1083            inherit => 1,
1084           },
1085
1086           width => {
1087            format => '<length>|<percentage>|auto',
1088            default => 'auto',
1089            inherit => 0,
1090           },
1091
1092          'word-spacing' => {
1093            format => 'normal|<length>',
1094            default => 'normal',
1095            inherit => 1,
1096           },
1097
1098          'z-index' => {
1099            format => 'auto|<integer>',
1100            default => 'auto',
1101            inherit => 0,
1102           },
1103         );
1104         $CSS21->add_property( $_ => $properties{$_} ) for keys %properties;
1105

SEE ALSO

1107       CSS::DOM
1108
1109
1110
1111perl v5.34.0                      2021-07-22       CSS::DOM::PropertyParser(3)
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