/*! HTML5 Shiv v3.5 | @afarkas @jdalton @jon_neal @rem | MIT/GPL2 Licensed */
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;(function(window, document) {
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/** Preset options */
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var options = window.html5 || {};
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/** Used to skip problem elements */
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var reSkip = /^<|^(?:button|form|map|select|textarea|object|iframe|option|optgroup)$/i;
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/** Not all elements can be cloned in IE (this list can be shortend) **/
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var saveClones = /^<|^(?:a|b|button|code|div|fieldset|form|h1|h2|h3|h4|h5|h6|i|iframe|img|input|label|li|link|ol|option|p|param|q|script|select|span|strong|style|table|tbody|td|textarea|tfoot|th|thead|tr|ul)$/i;
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/** Detect whether the browser supports default html5 styles */
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var supportsHtml5Styles;
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/** Detect whether the browser supports unknown elements */
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var supportsUnknownElements;
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(function() {
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var a = document.createElement('a');
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a.innerHTML = '<xyz></xyz>';
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//if the hidden property is implemented we can assume, that the browser supports HTML5 Styles | this fails in Chrome 8
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supportsHtml5Styles = ('hidden' in a);
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//if we are part of Modernizr, we do an additional test to solve the Chrome 8 fail
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if(supportsHtml5Styles && typeof injectElementWithStyles == 'function'){
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injectElementWithStyles('#modernizr{}', function(node){
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node.hidden = true;
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supportsHtml5Styles = (window.getComputedStyle ?
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getComputedStyle(node, null) :
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node.currentStyle).display == 'none';
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});
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}
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supportsUnknownElements = a.childNodes.length == 1 || (function() {
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// assign a false positive if unable to shiv
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try {
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(document.createElement)('a');
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} catch(e) {
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return true;
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}
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var frag = document.createDocumentFragment();
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return (
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typeof frag.cloneNode == 'undefined' ||
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typeof frag.createDocumentFragment == 'undefined' ||
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typeof frag.createElement == 'undefined'
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);
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}());
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}());
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/*--------------------------------------------------------------------------*/
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/**
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* Creates a style sheet with the given CSS text and adds it to the document.
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* @private
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* @param {Document} ownerDocument The document.
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* @param {String} cssText The CSS text.
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* @returns {StyleSheet} The style element.
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*/
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function addStyleSheet(ownerDocument, cssText) {
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var p = ownerDocument.createElement('p'),
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parent = ownerDocument.getElementsByTagName('head')[0] || ownerDocument.documentElement;
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p.innerHTML = 'x<style>' + cssText + '</style>';
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return parent.insertBefore(p.lastChild, parent.firstChild);
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}
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/**
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* Returns the value of `html5.elements` as an array.
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* @private
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* @returns {Array} An array of shived element node names.
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*/
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function getElements() {
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var elements = html5.elements;
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return typeof elements == 'string' ? elements.split(' ') : elements;
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}
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/**
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* Shivs the `createElement` and `createDocumentFragment` methods of the document.
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* @private
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* @param {Document|DocumentFragment} ownerDocument The document.
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*/
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function shivMethods(ownerDocument) {
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var cache = {},
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docCreateElement = ownerDocument.createElement,
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docCreateFragment = ownerDocument.createDocumentFragment,
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frag = docCreateFragment();
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ownerDocument.createElement = function(nodeName) {
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//abort shiv
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if(!html5.shivMethods){
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return docCreateElement(nodeName);
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}
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var node;
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if(cache[nodeName]){
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node = cache[nodeName].cloneNode();
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} else if(saveClones.test(nodeName)){
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node = (cache[nodeName] = docCreateElement(nodeName)).cloneNode();
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} else {
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node = docCreateElement(nodeName);
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}
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// Avoid adding some elements to fragments in IE < 9 because
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// * Attributes like `name` or `type` cannot be set/changed once an element
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// is inserted into a document/fragment
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// * Link elements with `src` attributes that are inaccessible, as with
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// a 403 response, will cause the tab/window to crash
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// * Script elements appended to fragments will execute when their `src`
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// or `text` property is set
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return node.canHaveChildren && !reSkip.test(nodeName) ? frag.appendChild(node) : node;
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};
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ownerDocument.createDocumentFragment = Function('h,f', 'return function(){' +
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'var n=f.cloneNode(),c=n.createElement;' +
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'h.shivMethods&&(' +
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// unroll the `createElement` calls
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getElements().join().replace(/\w+/g, function(nodeName) {
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docCreateElement(nodeName);
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frag.createElement(nodeName);
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return 'c("' + nodeName + '")';
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}) +
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');return n}'
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)(html5, frag);
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}
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/*--------------------------------------------------------------------------*/
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/**
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* Shivs the given document.
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* @memberOf html5
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* @param {Document} ownerDocument The document to shiv.
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* @returns {Document} The shived document.
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*/
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function shivDocument(ownerDocument) {
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var shived;
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if (ownerDocument.documentShived) {
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return ownerDocument;
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}
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if (html5.shivCSS && !supportsHtml5Styles) {
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shived = !!addStyleSheet(ownerDocument,
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// corrects block display not defined in IE6/7/8/9
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'article,aside,details,figcaption,figure,footer,header,hgroup,nav,section{display:block}' +
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// corrects audio display not defined in IE6/7/8/9
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'audio{display:none}' +
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// corrects canvas and video display not defined in IE6/7/8/9
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'canvas,video{display:inline-block;*display:inline;*zoom:1}' +
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// corrects 'hidden' attribute and audio[controls] display not present in IE7/8/9
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'[hidden]{display:none}audio[controls]{display:inline-block;*display:inline;*zoom:1}' +
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// adds styling not present in IE6/7/8/9
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'mark{background:#FF0;color:#000}'
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);
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}
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if (!supportsUnknownElements) {
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shived = !shivMethods(ownerDocument);
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}
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if (shived) {
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ownerDocument.documentShived = shived;
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}
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return ownerDocument;
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}
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/*--------------------------------------------------------------------------*/
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/**
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* The `html5` object is exposed so that more elements can be shived and
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* existing shiving can be detected on iframes.
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* @type Object
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* @example
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*
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* // options can be changed before the script is included
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* html5 = { 'elements': 'mark section', 'shivCSS': false, 'shivMethods': false };
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*/
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var html5 = {
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/**
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* An array or space separated string of node names of the elements to shiv.
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* @memberOf html5
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* @type Array|String
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*/
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'elements': options.elements || 'abbr article aside audio bdi canvas data datalist details figcaption figure footer header hgroup mark meter nav output progress section summary time video',
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/**
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* A flag to indicate that the HTML5 style sheet should be inserted.
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* @memberOf html5
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* @type Boolean
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*/
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'shivCSS': !(options.shivCSS === false),
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/**
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* A flag to indicate that the document's `createElement` and `createDocumentFragment`
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* methods should be overwritten.
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* @memberOf html5
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* @type Boolean
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*/
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'shivMethods': !(options.shivMethods === false),
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/**
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* A string to describe the type of `html5` object ("default" or "default print").
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* @memberOf html5
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* @type String
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*/
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'type': 'default',
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// shivs the document according to the specified `html5` object options
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'shivDocument': shivDocument
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};
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/*--------------------------------------------------------------------------*/
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// expose html5
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window.html5 = html5;
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// shiv the document
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shivDocument(document);
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}(this, document));
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