https://delphic.games/js/html5shiv.js

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