635 lines
20 KiB
PHP
635 lines
20 KiB
PHP
<?php
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/**
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* Provide general element functions.
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*/
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namespace Masterminds\HTML5;
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/**
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* This class provides general information about HTML5 elements,
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* including syntactic and semantic issues.
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* Parsers and serializers can
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* use this class as a reference point for information about the rules
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* of various HTML5 elements.
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*
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* @todo consider using a bitmask table lookup. There is enough overlap in
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* naming that this could significantly shrink the size and maybe make it
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* faster. See the Go teams implementation at https://code.google.com/p/go/source/browse/html/atom.
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*/
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class Elements
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{
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/**
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* Indicates an element is described in the specification.
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*/
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const KNOWN_ELEMENT = 1;
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// From section 8.1.2: "script", "style"
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// From 8.2.5.4.7 ("in body" insertion mode): "noembed"
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// From 8.4 "style", "xmp", "iframe", "noembed", "noframes"
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/**
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* Indicates the contained text should be processed as raw text.
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*/
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const TEXT_RAW = 2;
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// From section 8.1.2: "textarea", "title"
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/**
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* Indicates the contained text should be processed as RCDATA.
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*/
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const TEXT_RCDATA = 4;
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/**
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* Indicates the tag cannot have content.
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*/
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const VOID_TAG = 8;
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// "address", "article", "aside", "blockquote", "center", "details", "dialog", "dir", "div", "dl",
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// "fieldset", "figcaption", "figure", "footer", "header", "hgroup", "menu",
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// "nav", "ol", "p", "section", "summary", "ul"
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// "h1", "h2", "h3", "h4", "h5", "h6"
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// "pre", "listing"
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// "form"
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// "plaintext"
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/**
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* Indicates that if a previous event is for a P tag, that element
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* should be considered closed.
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*/
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const AUTOCLOSE_P = 16;
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/**
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* Indicates that the text inside is plaintext (pre).
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*/
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const TEXT_PLAINTEXT = 32;
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// See https://developer.mozilla.org/en-US/docs/HTML/Block-level_elements
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/**
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* Indicates that the tag is a block.
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*/
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const BLOCK_TAG = 64;
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/**
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* Indicates that the tag allows only inline elements as child nodes.
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*/
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const BLOCK_ONLY_INLINE = 128;
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/**
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* The HTML5 elements as defined in http://dev.w3.org/html5/markup/elements.html.
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*
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* @var array
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*/
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public static $html5 = array(
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"a" => 1,
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"abbr" => 1,
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"address" => 65, // NORMAL | BLOCK_TAG
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"area" => 9, // NORMAL | VOID_TAG
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"article" => 81, // NORMAL | AUTOCLOSE_P | BLOCK_TAG
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"aside" => 81, // NORMAL | AUTOCLOSE_P | BLOCK_TAG
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"audio" => 65, // NORMAL | BLOCK_TAG
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"b" => 1,
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"base" => 9, // NORMAL | VOID_TAG
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"bdi" => 1,
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"bdo" => 1,
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"blockquote" => 81, // NORMAL | AUTOCLOSE_P | BLOCK_TAG
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"body" => 1,
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"br" => 9, // NORMAL | VOID_TAG
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"button" => 1,
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"canvas" => 65, // NORMAL | BLOCK_TAG
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"caption" => 1,
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"cite" => 1,
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"code" => 1,
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"col" => 9, // NORMAL | VOID_TAG
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"colgroup" => 1,
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"command" => 9, // NORMAL | VOID_TAG
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// "data" => 1, // This is highly experimental and only part of the whatwg spec (not w3c). See https://developer.mozilla.org/en-US/docs/HTML/Element/data
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"datalist" => 1,
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"dd" => 65, // NORMAL | BLOCK_TAG
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"del" => 1,
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"details" => 17, // NORMAL | AUTOCLOSE_P,
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"dfn" => 1,
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"dialog" => 17, // NORMAL | AUTOCLOSE_P,
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"div" => 81, // NORMAL | AUTOCLOSE_P | BLOCK_TAG
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"dl" => 81, // NORMAL | AUTOCLOSE_P | BLOCK_TAG
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"dt" => 1,
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"em" => 1,
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"embed" => 9, // NORMAL | VOID_TAG
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"fieldset" => 81, // NORMAL | AUTOCLOSE_P | BLOCK_TAG
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"figcaption" => 81, // NORMAL | AUTOCLOSE_P | BLOCK_TAG
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"figure" => 81, // NORMAL | AUTOCLOSE_P | BLOCK_TAG
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"footer" => 81, // NORMAL | AUTOCLOSE_P | BLOCK_TAG
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"form" => 81, // NORMAL | AUTOCLOSE_P | BLOCK_TAG
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"h1" => 81, // NORMAL | AUTOCLOSE_P | BLOCK_TAG
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"h2" => 81, // NORMAL | AUTOCLOSE_P | BLOCK_TAG
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"h3" => 81, // NORMAL | AUTOCLOSE_P | BLOCK_TAG
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"h4" => 81, // NORMAL | AUTOCLOSE_P | BLOCK_TAG
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"h5" => 81, // NORMAL | AUTOCLOSE_P | BLOCK_TAG
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"h6" => 81, // NORMAL | AUTOCLOSE_P | BLOCK_TAG
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"head" => 1,
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"header" => 81, // NORMAL | AUTOCLOSE_P | BLOCK_TAG
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"hgroup" => 81, // NORMAL | AUTOCLOSE_P | BLOCK_TAG
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"hr" => 73, // NORMAL | VOID_TAG
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"html" => 1,
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"i" => 1,
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"iframe" => 3, // NORMAL | TEXT_RAW
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"img" => 9, // NORMAL | VOID_TAG
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"input" => 9, // NORMAL | VOID_TAG
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"kbd" => 1,
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"ins" => 1,
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"keygen" => 9, // NORMAL | VOID_TAG
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"label" => 1,
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"legend" => 1,
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"li" => 1,
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"link" => 9, // NORMAL | VOID_TAG
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"map" => 1,
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"mark" => 1,
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"menu" => 17, // NORMAL | AUTOCLOSE_P,
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"meta" => 9, // NORMAL | VOID_TAG
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"meter" => 1,
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"nav" => 17, // NORMAL | AUTOCLOSE_P,
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"noscript" => 65, // NORMAL | BLOCK_TAG
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"object" => 1,
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"ol" => 81, // NORMAL | AUTOCLOSE_P | BLOCK_TAG
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"optgroup" => 1,
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"option" => 1,
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"output" => 65, // NORMAL | BLOCK_TAG
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"p" => 209, // NORMAL | AUTOCLOSE_P | BLOCK_TAG | BLOCK_ONLY_INLINE
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"param" => 9, // NORMAL | VOID_TAG
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"pre" => 81, // NORMAL | AUTOCLOSE_P | BLOCK_TAG
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"progress" => 1,
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"q" => 1,
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"rp" => 1,
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"rt" => 1,
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"ruby" => 1,
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"s" => 1,
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"samp" => 1,
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"script" => 3, // NORMAL | TEXT_RAW
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"section" => 81, // NORMAL | AUTOCLOSE_P | BLOCK_TAG
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"select" => 1,
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"small" => 1,
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"source" => 9, // NORMAL | VOID_TAG
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"span" => 1,
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"strong" => 1,
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"style" => 3, // NORMAL | TEXT_RAW
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"sub" => 1,
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"summary" => 17, // NORMAL | AUTOCLOSE_P,
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"sup" => 1,
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"table" => 65, // NORMAL | BLOCK_TAG
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"tbody" => 1,
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"td" => 1,
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"textarea" => 5, // NORMAL | TEXT_RCDATA
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"tfoot" => 65, // NORMAL | BLOCK_TAG
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"th" => 1,
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"thead" => 1,
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"time" => 1,
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"title" => 5, // NORMAL | TEXT_RCDATA
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"tr" => 1,
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"track" => 9, // NORMAL | VOID_TAG
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"u" => 1,
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"ul" => 81, // NORMAL | AUTOCLOSE_P | BLOCK_TAG
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"var" => 1,
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"video" => 65, // NORMAL | BLOCK_TAG
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"wbr" => 9, // NORMAL | VOID_TAG
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// Legacy?
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'basefont' => 8, // VOID_TAG
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'bgsound' => 8, // VOID_TAG
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'noframes' => 2, // RAW_TEXT
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'frame' => 9, // NORMAL | VOID_TAG
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'frameset' => 1,
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'center' => 16,
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'dir' => 16,
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'listing' => 16, // AUTOCLOSE_P
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'plaintext' => 48, // AUTOCLOSE_P | TEXT_PLAINTEXT
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'applet' => 0,
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'marquee' => 0,
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'isindex' => 8, // VOID_TAG
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'xmp' => 20, // AUTOCLOSE_P | VOID_TAG | RAW_TEXT
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'noembed' => 2 // RAW_TEXT
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);
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/**
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* The MathML elements.
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* See http://www.w3.org/wiki/MathML/Elements.
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*
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* In our case we are only concerned with presentation MathML and not content
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* MathML. There is a nice list of this subset at https://developer.mozilla.org/en-US/docs/MathML/Element.
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*
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* @var array
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*/
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public static $mathml = array(
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"maction" => 1,
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"maligngroup" => 1,
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"malignmark" => 1,
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"math" => 1,
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"menclose" => 1,
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"merror" => 1,
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"mfenced" => 1,
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"mfrac" => 1,
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"mglyph" => 1,
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"mi" => 1,
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"mlabeledtr" => 1,
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"mlongdiv" => 1,
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"mmultiscripts" => 1,
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"mn" => 1,
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"mo" => 1,
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"mover" => 1,
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"mpadded" => 1,
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"mphantom" => 1,
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"mroot" => 1,
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"mrow" => 1,
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"ms" => 1,
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"mscarries" => 1,
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"mscarry" => 1,
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"msgroup" => 1,
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"msline" => 1,
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"mspace" => 1,
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"msqrt" => 1,
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"msrow" => 1,
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"mstack" => 1,
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"mstyle" => 1,
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"msub" => 1,
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"msup" => 1,
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"msubsup" => 1,
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"mtable" => 1,
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"mtd" => 1,
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"mtext" => 1,
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"mtr" => 1,
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"munder" => 1,
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"munderover" => 1
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);
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/**
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* The svg elements.
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*
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* The Mozilla documentation has a good list at https://developer.mozilla.org/en-US/docs/SVG/Element.
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* The w3c list appears to be lacking in some areas like filter effect elements.
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* That list can be found at http://www.w3.org/wiki/SVG/Elements.
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*
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* Note, FireFox appears to do a better job rendering filter effects than chrome.
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* While they are in the spec I'm not sure how widely implemented they are.
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*
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* @var array
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*/
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public static $svg = array(
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"a" => 1,
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"altGlyph" => 1,
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"altGlyphDef" => 1,
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"altGlyphItem" => 1,
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"animate" => 1,
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"animateColor" => 1,
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"animateMotion" => 1,
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"animateTransform" => 1,
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"circle" => 1,
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"clipPath" => 1,
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"color-profile" => 1,
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"cursor" => 1,
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"defs" => 1,
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"desc" => 1,
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"ellipse" => 1,
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"feBlend" => 1,
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"feColorMatrix" => 1,
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"feComponentTransfer" => 1,
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"feComposite" => 1,
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"feConvolveMatrix" => 1,
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"feDiffuseLighting" => 1,
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"feDisplacementMap" => 1,
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"feDistantLight" => 1,
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"feFlood" => 1,
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"feFuncA" => 1,
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"feFuncB" => 1,
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"feFuncG" => 1,
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"feFuncR" => 1,
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"feGaussianBlur" => 1,
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"feImage" => 1,
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"feMerge" => 1,
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"feMergeNode" => 1,
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"feMorphology" => 1,
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"feOffset" => 1,
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"fePointLight" => 1,
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"feSpecularLighting" => 1,
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"feSpotLight" => 1,
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"feTile" => 1,
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"feTurbulence" => 1,
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"filter" => 1,
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"font" => 1,
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"font-face" => 1,
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"font-face-format" => 1,
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"font-face-name" => 1,
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"font-face-src" => 1,
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"font-face-uri" => 1,
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"foreignObject" => 1,
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"g" => 1,
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"glyph" => 1,
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"glyphRef" => 1,
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"hkern" => 1,
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"image" => 1,
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"line" => 1,
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"linearGradient" => 1,
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"marker" => 1,
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"mask" => 1,
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"metadata" => 1,
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"missing-glyph" => 1,
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"mpath" => 1,
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"path" => 1,
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"pattern" => 1,
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"polygon" => 1,
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"polyline" => 1,
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"radialGradient" => 1,
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"rect" => 1,
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"script" => 3, // NORMAL | RAW_TEXT
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"set" => 1,
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"stop" => 1,
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"style" => 3, // NORMAL | RAW_TEXT
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"svg" => 1,
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"switch" => 1,
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"symbol" => 1,
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"text" => 1,
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"textPath" => 1,
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"title" => 1,
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"tref" => 1,
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"tspan" => 1,
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"use" => 1,
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"view" => 1,
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"vkern" => 1
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);
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/**
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* Some attributes in SVG are case sensetitive.
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*
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* This map contains key/value pairs with the key as the lowercase attribute
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* name and the value with the correct casing.
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*/
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public static $svgCaseSensitiveAttributeMap = array(
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'attributename' => 'attributeName',
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'attributetype' => 'attributeType',
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'basefrequency' => 'baseFrequency',
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'baseprofile' => 'baseProfile',
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'calcmode' => 'calcMode',
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'clippathunits' => 'clipPathUnits',
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'contentscripttype' => 'contentScriptType',
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'contentstyletype' => 'contentStyleType',
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'diffuseconstant' => 'diffuseConstant',
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'edgemode' => 'edgeMode',
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'externalresourcesrequired' => 'externalResourcesRequired',
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'filterres' => 'filterRes',
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'filterunits' => 'filterUnits',
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'glyphref' => 'glyphRef',
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'gradienttransform' => 'gradientTransform',
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'gradientunits' => 'gradientUnits',
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'kernelmatrix' => 'kernelMatrix',
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'kernelunitlength' => 'kernelUnitLength',
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'keypoints' => 'keyPoints',
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'keysplines' => 'keySplines',
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'keytimes' => 'keyTimes',
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'lengthadjust' => 'lengthAdjust',
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'limitingconeangle' => 'limitingConeAngle',
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'markerheight' => 'markerHeight',
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'markerunits' => 'markerUnits',
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'markerwidth' => 'markerWidth',
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'maskcontentunits' => 'maskContentUnits',
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'maskunits' => 'maskUnits',
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'numoctaves' => 'numOctaves',
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'pathlength' => 'pathLength',
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'patterncontentunits' => 'patternContentUnits',
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'patterntransform' => 'patternTransform',
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'patternunits' => 'patternUnits',
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'pointsatx' => 'pointsAtX',
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'pointsaty' => 'pointsAtY',
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'pointsatz' => 'pointsAtZ',
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'preservealpha' => 'preserveAlpha',
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'preserveaspectratio' => 'preserveAspectRatio',
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'primitiveunits' => 'primitiveUnits',
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'refx' => 'refX',
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'refy' => 'refY',
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'repeatcount' => 'repeatCount',
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'repeatdur' => 'repeatDur',
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'requiredextensions' => 'requiredExtensions',
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'requiredfeatures' => 'requiredFeatures',
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'specularconstant' => 'specularConstant',
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'specularexponent' => 'specularExponent',
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'spreadmethod' => 'spreadMethod',
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'startoffset' => 'startOffset',
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'stddeviation' => 'stdDeviation',
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'stitchtiles' => 'stitchTiles',
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'surfacescale' => 'surfaceScale',
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'systemlanguage' => 'systemLanguage',
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'tablevalues' => 'tableValues',
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'targetx' => 'targetX',
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'targety' => 'targetY',
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'textlength' => 'textLength',
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'viewbox' => 'viewBox',
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'viewtarget' => 'viewTarget',
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'xchannelselector' => 'xChannelSelector',
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'ychannelselector' => 'yChannelSelector',
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'zoomandpan' => 'zoomAndPan'
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);
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/**
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* Some SVG elements are case sensetitive.
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* This map contains these.
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*
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* The map contains key/value store of the name is lowercase as the keys and
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* the correct casing as the value.
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*/
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public static $svgCaseSensitiveElementMap = array(
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'altglyph' => 'altGlyph',
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'altglyphdef' => 'altGlyphDef',
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'altglyphitem' => 'altGlyphItem',
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'animatecolor' => 'animateColor',
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'animatemotion' => 'animateMotion',
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'animatetransform' => 'animateTransform',
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'clippath' => 'clipPath',
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'feblend' => 'feBlend',
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'fecolormatrix' => 'feColorMatrix',
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'fecomponenttransfer' => 'feComponentTransfer',
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'fecomposite' => 'feComposite',
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'feconvolvematrix' => 'feConvolveMatrix',
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'fediffuselighting' => 'feDiffuseLighting',
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'fedisplacementmap' => 'feDisplacementMap',
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'fedistantlight' => 'feDistantLight',
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'feflood' => 'feFlood',
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'fefunca' => 'feFuncA',
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'fefuncb' => 'feFuncB',
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'fefuncg' => 'feFuncG',
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'fefuncr' => 'feFuncR',
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'fegaussianblur' => 'feGaussianBlur',
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'feimage' => 'feImage',
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'femerge' => 'feMerge',
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'femergenode' => 'feMergeNode',
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'femorphology' => 'feMorphology',
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'feoffset' => 'feOffset',
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'fepointlight' => 'fePointLight',
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'fespecularlighting' => 'feSpecularLighting',
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'fespotlight' => 'feSpotLight',
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'fetile' => 'feTile',
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'feturbulence' => 'feTurbulence',
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'foreignobject' => 'foreignObject',
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'glyphref' => 'glyphRef',
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'lineargradient' => 'linearGradient',
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'radialgradient' => 'radialGradient',
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'textpath' => 'textPath'
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);
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/**
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* Check whether the given element meets the given criterion.
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*
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* Example:
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*
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* Elements::isA('script', Elements::TEXT_RAW); // Returns true.
|
|
*
|
|
* Elements::isA('script', Elements::TEXT_RCDATA); // Returns false.
|
|
*
|
|
* @param string $name
|
|
* The element name.
|
|
* @param int $mask
|
|
* One of the constants on this class.
|
|
* @return boolean true if the element matches the mask, false otherwise.
|
|
*/
|
|
public static function isA($name, $mask)
|
|
{
|
|
if (! static::isElement($name)) {
|
|
return false;
|
|
}
|
|
|
|
return (static::element($name) & $mask) == $mask;
|
|
}
|
|
|
|
/**
|
|
* Test if an element is a valid html5 element.
|
|
*
|
|
* @param string $name
|
|
* The name of the element.
|
|
*
|
|
* @return bool True if a html5 element and false otherwise.
|
|
*/
|
|
public static function isHtml5Element($name)
|
|
{
|
|
// html5 element names are case insensetitive. Forcing lowercase for the check.
|
|
// Do we need this check or will all data passed here already be lowercase?
|
|
return isset(static::$html5[strtolower($name)]);
|
|
}
|
|
|
|
/**
|
|
* Test if an element name is a valid MathML presentation element.
|
|
*
|
|
* @param string $name
|
|
* The name of the element.
|
|
*
|
|
* @return bool True if a MathML name and false otherwise.
|
|
*/
|
|
public static function isMathMLElement($name)
|
|
{
|
|
// MathML is case-sensetitive unlike html5 elements.
|
|
return isset(static::$mathml[$name]);
|
|
}
|
|
|
|
/**
|
|
* Test if an element is a valid SVG element.
|
|
*
|
|
* @param string $name
|
|
* The name of the element.
|
|
*
|
|
* @return boolean True if a SVG element and false otherise.
|
|
*/
|
|
public static function isSvgElement($name)
|
|
{
|
|
// SVG is case-sensetitive unlike html5 elements.
|
|
return isset(static::$svg[$name]);
|
|
}
|
|
|
|
/**
|
|
* Is an element name valid in an html5 document.
|
|
*
|
|
* This includes html5 elements along with other allowed embedded content
|
|
* such as svg and mathml.
|
|
*
|
|
* @param string $name
|
|
* The name of the element.
|
|
*
|
|
* @return bool True if valid and false otherwise.
|
|
*/
|
|
public static function isElement($name)
|
|
{
|
|
return static::isHtml5Element($name) || static::isMathMLElement($name) || static::isSvgElement($name);
|
|
}
|
|
|
|
/**
|
|
* Get the element mask for the given element name.
|
|
*
|
|
* @param string $name
|
|
* The name of the element.
|
|
*
|
|
* @return int|bool The element mask or false if element does not exist.
|
|
*/
|
|
public static function element($name)
|
|
{
|
|
if (isset(static::$html5[$name])) {
|
|
return static::$html5[$name];
|
|
}
|
|
if (isset(static::$svg[$name])) {
|
|
return static::$svg[$name];
|
|
}
|
|
if (isset(static::$mathml[$name])) {
|
|
return static::$mathml[$name];
|
|
}
|
|
|
|
return false;
|
|
}
|
|
|
|
/**
|
|
* Normalize a SVG element name to its proper case and form.
|
|
*
|
|
* @param string $name
|
|
* The name of the element.
|
|
*
|
|
* @return string The normalized form of the element name.
|
|
*/
|
|
public static function normalizeSvgElement($name)
|
|
{
|
|
$name = strtolower($name);
|
|
if (isset(static::$svgCaseSensitiveElementMap[$name])) {
|
|
$name = static::$svgCaseSensitiveElementMap[$name];
|
|
}
|
|
|
|
return $name;
|
|
}
|
|
|
|
/**
|
|
* Normalize a SVG attribute name to its proper case and form.
|
|
*
|
|
* @param string $name
|
|
* The name of the attribute.
|
|
*
|
|
* @return string The normalized form of the attribute name.
|
|
*/
|
|
public static function normalizeSvgAttribute($name)
|
|
{
|
|
$name = strtolower($name);
|
|
if (isset(static::$svgCaseSensitiveAttributeMap[$name])) {
|
|
$name = static::$svgCaseSensitiveAttributeMap[$name];
|
|
}
|
|
|
|
return $name;
|
|
}
|
|
|
|
/**
|
|
* Normalize a MathML attribute name to its proper case and form.
|
|
*
|
|
* Note, all MathML element names are lowercase.
|
|
*
|
|
* @param string $name
|
|
* The name of the attribute.
|
|
*
|
|
* @return string The normalized form of the attribute name.
|
|
*/
|
|
public static function normalizeMathMlAttribute($name)
|
|
{
|
|
$name = strtolower($name);
|
|
|
|
// Only one attribute has a mixed case form for MathML.
|
|
if ($name == 'definitionurl') {
|
|
$name = 'definitionURL';
|
|
}
|
|
|
|
return $name;
|
|
}
|
|
}
|