lh | 9ed821d | 2023-04-07 01:36:19 -0700 | [diff] [blame^] | 1 | /** |
| 2 | * @preserve HTML5 Shiv 3.7.2 | @afarkas @jdalton @jon_neal @rem | MIT/GPL2 Licensed |
| 3 | */ |
| 4 | ;(function(window, document) { |
| 5 | /*jshint evil:true */ |
| 6 | /** version */ |
| 7 | var version = '0.0.0'; |
| 8 | |
| 9 | /** Preset options */ |
| 10 | var options = window.html5 || {}; |
| 11 | |
| 12 | /** Used to skip problem elements */ |
| 13 | var reSkip = /^<|^(?:button|map|select|textarea|object|iframe|option|optgroup)$/i; |
| 14 | |
| 15 | /** Not all elements can be cloned in IE **/ |
| 16 | var saveClones = /^(?:a|b|code|div|fieldset|h1|h2|h3|h4|h5|h6|i|label|li|ol|p|q|span|strong|style|table|tbody|td|th|tr|ul)$/i; |
| 17 | |
| 18 | /** Detect whether the browser supports default html5 styles */ |
| 19 | var supportsHtml5Styles; |
| 20 | |
| 21 | /** Name of the expando, to work with multiple documents or to re-shiv one document */ |
| 22 | var expando = '_html5shiv'; |
| 23 | |
| 24 | /** The id for the the documents expando */ |
| 25 | var expanID = 0; |
| 26 | |
| 27 | /** Cached data for each document */ |
| 28 | var expandoData = {}; |
| 29 | |
| 30 | /** Detect whether the browser supports unknown elements */ |
| 31 | var supportsUnknownElements; |
| 32 | |
| 33 | (function() { |
| 34 | try { |
| 35 | var a = document.createElement('a'); |
| 36 | a.innerHTML = '<xyz></xyz>'; |
| 37 | //if the hidden property is implemented we can assume, that the browser supports basic HTML5 Styles |
| 38 | supportsHtml5Styles = ('hidden' in a); |
| 39 | |
| 40 | supportsUnknownElements = a.childNodes.length == 1 || (function() { |
| 41 | // assign a false positive if unable to shiv |
| 42 | (document.createElement)('a'); |
| 43 | var frag = document.createDocumentFragment(); |
| 44 | return ( |
| 45 | typeof frag.cloneNode == 'undefined' || |
| 46 | typeof frag.createDocumentFragment == 'undefined' || |
| 47 | typeof frag.createElement == 'undefined' |
| 48 | ); |
| 49 | }()); |
| 50 | } catch(e) { |
| 51 | // assign a false positive if detection fails => unable to shiv |
| 52 | supportsHtml5Styles = true; |
| 53 | supportsUnknownElements = true; |
| 54 | } |
| 55 | |
| 56 | }()); |
| 57 | |
| 58 | /*--------------------------------------------------------------------------*/ |
| 59 | |
| 60 | /** |
| 61 | * Creates a style sheet with the given CSS text and adds it to the document. |
| 62 | * @private |
| 63 | * @param {Document} ownerDocument The document. |
| 64 | * @param {String} cssText The CSS text. |
| 65 | * @returns {StyleSheet} The style element. |
| 66 | */ |
| 67 | function addStyleSheet(ownerDocument, cssText) { |
| 68 | var p = ownerDocument.createElement('p'), |
| 69 | parent = ownerDocument.getElementsByTagName('head')[0] || ownerDocument.documentElement; |
| 70 | |
| 71 | p.innerHTML = 'x<style>' + cssText + '</style>'; |
| 72 | return parent.insertBefore(p.lastChild, parent.firstChild); |
| 73 | } |
| 74 | |
| 75 | /** |
| 76 | * Returns the value of `html5.elements` as an array. |
| 77 | * @private |
| 78 | * @returns {Array} An array of shived element node names. |
| 79 | */ |
| 80 | function getElements() { |
| 81 | var elements = html5.elements; |
| 82 | return typeof elements == 'string' ? elements.split(' ') : elements; |
| 83 | } |
| 84 | |
| 85 | /** |
| 86 | * Extends the built-in list of html5 elements |
| 87 | * @memberOf html5 |
| 88 | * @param {String|Array} newElements whitespace separated list or array of new element names to shiv |
| 89 | * @param {Document} ownerDocument The context document. |
| 90 | */ |
| 91 | function addElements(newElements, ownerDocument) { |
| 92 | var elements = html5.elements; |
| 93 | if(typeof elements != 'string'){ |
| 94 | elements = elements.join(' '); |
| 95 | } |
| 96 | if(typeof newElements != 'string'){ |
| 97 | newElements = newElements.join(' '); |
| 98 | } |
| 99 | html5.elements = elements +' '+ newElements; |
| 100 | shivDocument(ownerDocument); |
| 101 | } |
| 102 | |
| 103 | /** |
| 104 | * Returns the data associated to the given document |
| 105 | * @private |
| 106 | * @param {Document} ownerDocument The document. |
| 107 | * @returns {Object} An object of data. |
| 108 | */ |
| 109 | function getExpandoData(ownerDocument) { |
| 110 | var data = expandoData[ownerDocument[expando]]; |
| 111 | if (!data) { |
| 112 | data = {}; |
| 113 | expanID++; |
| 114 | ownerDocument[expando] = expanID; |
| 115 | expandoData[expanID] = data; |
| 116 | } |
| 117 | return data; |
| 118 | } |
| 119 | |
| 120 | /** |
| 121 | * returns a shived element for the given nodeName and document |
| 122 | * @memberOf html5 |
| 123 | * @param {String} nodeName name of the element |
| 124 | * @param {Document} ownerDocument The context document. |
| 125 | * @returns {Object} The shived element. |
| 126 | */ |
| 127 | function createElement(nodeName, ownerDocument, data){ |
| 128 | if (!ownerDocument) { |
| 129 | ownerDocument = document; |
| 130 | } |
| 131 | if(supportsUnknownElements){ |
| 132 | return ownerDocument.createElement(nodeName); |
| 133 | } |
| 134 | if (!data) { |
| 135 | data = getExpandoData(ownerDocument); |
| 136 | } |
| 137 | var node; |
| 138 | |
| 139 | if (data.cache[nodeName]) { |
| 140 | node = data.cache[nodeName].cloneNode(); |
| 141 | } else if (saveClones.test(nodeName)) { |
| 142 | node = (data.cache[nodeName] = data.createElem(nodeName)).cloneNode(); |
| 143 | } else { |
| 144 | node = data.createElem(nodeName); |
| 145 | } |
| 146 | |
| 147 | // Avoid adding some elements to fragments in IE < 9 because |
| 148 | // * Attributes like `name` or `type` cannot be set/changed once an element |
| 149 | // is inserted into a document/fragment |
| 150 | // * Link elements with `src` attributes that are inaccessible, as with |
| 151 | // a 403 response, will cause the tab/window to crash |
| 152 | // * Script elements appended to fragments will execute when their `src` |
| 153 | // or `text` property is set |
| 154 | return node.canHaveChildren && !reSkip.test(nodeName) && !node.tagUrn ? data.frag.appendChild(node) : node; |
| 155 | } |
| 156 | |
| 157 | /** |
| 158 | * returns a shived DocumentFragment for the given document |
| 159 | * @memberOf html5 |
| 160 | * @param {Document} ownerDocument The context document. |
| 161 | * @returns {Object} The shived DocumentFragment. |
| 162 | */ |
| 163 | function createDocumentFragment(ownerDocument, data){ |
| 164 | if (!ownerDocument) { |
| 165 | ownerDocument = document; |
| 166 | } |
| 167 | if(supportsUnknownElements){ |
| 168 | return ownerDocument.createDocumentFragment(); |
| 169 | } |
| 170 | data = data || getExpandoData(ownerDocument); |
| 171 | var clone = data.frag.cloneNode(), |
| 172 | i = 0, |
| 173 | elems = getElements(), |
| 174 | l = elems.length; |
| 175 | for(;i<l;i++){ |
| 176 | clone.createElement(elems[i]); |
| 177 | } |
| 178 | return clone; |
| 179 | } |
| 180 | |
| 181 | /** |
| 182 | * Shivs the `createElement` and `createDocumentFragment` methods of the document. |
| 183 | * @private |
| 184 | * @param {Document|DocumentFragment} ownerDocument The document. |
| 185 | * @param {Object} data of the document. |
| 186 | */ |
| 187 | function shivMethods(ownerDocument, data) { |
| 188 | if (!data.cache) { |
| 189 | data.cache = {}; |
| 190 | data.createElem = ownerDocument.createElement; |
| 191 | data.createFrag = ownerDocument.createDocumentFragment; |
| 192 | data.frag = data.createFrag(); |
| 193 | } |
| 194 | |
| 195 | |
| 196 | ownerDocument.createElement = function(nodeName) { |
| 197 | //abort shiv |
| 198 | if (!html5.shivMethods) { |
| 199 | return data.createElem(nodeName); |
| 200 | } |
| 201 | return createElement(nodeName, ownerDocument, data); |
| 202 | }; |
| 203 | |
| 204 | ownerDocument.createDocumentFragment = Function('h,f', 'return function(){' + |
| 205 | 'var n=f.cloneNode(),c=n.createElement;' + |
| 206 | 'h.shivMethods&&(' + |
| 207 | // unroll the `createElement` calls |
| 208 | getElements().join().replace(/[\w\-:]+/g, function(nodeName) { |
| 209 | data.createElem(nodeName); |
| 210 | data.frag.createElement(nodeName); |
| 211 | return 'c("' + nodeName + '")'; |
| 212 | }) + |
| 213 | ');return n}' |
| 214 | )(html5, data.frag); |
| 215 | } |
| 216 | |
| 217 | /*--------------------------------------------------------------------------*/ |
| 218 | |
| 219 | /** |
| 220 | * Shivs the given document. |
| 221 | * @memberOf html5 |
| 222 | * @param {Document} ownerDocument The document to shiv. |
| 223 | * @returns {Document} The shived document. |
| 224 | */ |
| 225 | function shivDocument(ownerDocument) { |
| 226 | if (!ownerDocument) { |
| 227 | ownerDocument = document; |
| 228 | } |
| 229 | var data = getExpandoData(ownerDocument); |
| 230 | |
| 231 | if (html5.shivCSS && !supportsHtml5Styles && !data.hasCSS) { |
| 232 | data.hasCSS = !!addStyleSheet(ownerDocument, |
| 233 | // corrects block display not defined in IE6/7/8/9 |
| 234 | 'article,aside,dialog,figcaption,figure,footer,header,hgroup,main,nav,section{display:block}' + |
| 235 | // adds styling not present in IE6/7/8/9 |
| 236 | 'mark{background:#FF0;color:#000}' + |
| 237 | // hides non-rendered elements |
| 238 | 'template{display:none}' |
| 239 | ); |
| 240 | } |
| 241 | if (!supportsUnknownElements) { |
| 242 | shivMethods(ownerDocument, data); |
| 243 | } |
| 244 | return ownerDocument; |
| 245 | } |
| 246 | |
| 247 | /*--------------------------------------------------------------------------*/ |
| 248 | |
| 249 | /** |
| 250 | * The `html5` object is exposed so that more elements can be shived and |
| 251 | * existing shiving can be detected on iframes. |
| 252 | * @type Object |
| 253 | * @example |
| 254 | * |
| 255 | * // options can be changed before the script is included |
| 256 | * html5 = { 'elements': 'mark section', 'shivCSS': false, 'shivMethods': false }; |
| 257 | */ |
| 258 | var html5 = { |
| 259 | |
| 260 | /** |
| 261 | * An array or space separated string of node names of the elements to shiv. |
| 262 | * @memberOf html5 |
| 263 | * @type Array|String |
| 264 | */ |
| 265 | 'elements': options.elements || 'abbr article aside audio bdi canvas data datalist details dialog figcaption figure footer header hgroup main mark meter nav output picture progress section summary template time video', |
| 266 | |
| 267 | /** |
| 268 | * current version of html5shiv |
| 269 | */ |
| 270 | 'version': version, |
| 271 | |
| 272 | /** |
| 273 | * A flag to indicate that the HTML5 style sheet should be inserted. |
| 274 | * @memberOf html5 |
| 275 | * @type Boolean |
| 276 | */ |
| 277 | 'shivCSS': (options.shivCSS !== false), |
| 278 | |
| 279 | /** |
| 280 | * Is equal to true if a browser supports creating unknown/HTML5 elements |
| 281 | * @memberOf html5 |
| 282 | * @type boolean |
| 283 | */ |
| 284 | 'supportsUnknownElements': supportsUnknownElements, |
| 285 | |
| 286 | /** |
| 287 | * A flag to indicate that the document's `createElement` and `createDocumentFragment` |
| 288 | * methods should be overwritten. |
| 289 | * @memberOf html5 |
| 290 | * @type Boolean |
| 291 | */ |
| 292 | 'shivMethods': (options.shivMethods !== false), |
| 293 | |
| 294 | /** |
| 295 | * A string to describe the type of `html5` object ("default" or "default print"). |
| 296 | * @memberOf html5 |
| 297 | * @type String |
| 298 | */ |
| 299 | 'type': 'default', |
| 300 | |
| 301 | // shivs the document according to the specified `html5` object options |
| 302 | 'shivDocument': shivDocument, |
| 303 | |
| 304 | //creates a shived element |
| 305 | createElement: createElement, |
| 306 | |
| 307 | //creates a shived documentFragment |
| 308 | createDocumentFragment: createDocumentFragment, |
| 309 | |
| 310 | //extends list of elements |
| 311 | addElements: addElements |
| 312 | }; |
| 313 | |
| 314 | /*--------------------------------------------------------------------------*/ |
| 315 | |
| 316 | // expose html5 |
| 317 | window.html5 = html5; |
| 318 | |
| 319 | // shiv the document |
| 320 | shivDocument(document); |
| 321 | |
| 322 | }(this, document)); |