chamilo-lms2/main/inc/lib/javascript/modernizr.js

/* Modernizr 2.7.1 (Custom Build) | MIT & BSD
 * Build: http://modernizr.com/download/#-fontface-backgroundsize-borderimage-borderradius-boxshadow-flexbox-hsla-multiplebgs-opacity-rgba-textshadow-cssanimations-csscolumns-generatedcontent-cssgradients-cssreflections-csstransforms-csstransforms3d-csstransitions-applicationcache-canvas-canvastext-draganddrop-hashchange-history-audio-video-indexeddb-input-inputtypes-localstorage-postmessage-sessionstorage-websockets-websqldatabase-webworkers-geolocation-inlinesvg-smil-svg-svgclippaths-touch-webgl-shiv-cssclasses-addtest-prefixed-teststyles-testprop-testallprops-hasevent-prefixes-domprefixes-load
 */
;



window.Modernizr = (function( window, document, undefined ) {

    var version = '2.7.1',

        Modernizr = {},

        enableClasses = true,

        docElement = document.documentElement,

        mod = 'modernizr',
        modElem = document.createElement(mod),
        mStyle = modElem.style,

        inputElem  = document.createElement('input')  ,

        smile = ':)',

        toString = {}.toString,

        prefixes = ' -webkit- -moz- -o- -ms- '.split(' '),



        omPrefixes = 'Webkit Moz O ms',

        cssomPrefixes = omPrefixes.split(' '),

        domPrefixes = omPrefixes.toLowerCase().split(' '),

        ns = {'svg': 'http://www.w3.org/2000/svg'},

        tests = {},
        inputs = {},
        attrs = {},

        classes = [],

        slice = classes.slice,

        featureName,


        injectElementWithStyles = function( rule, callback, nodes, testnames ) {

            var style, ret, node, docOverflow,
                div = document.createElement('div'),
                body = document.body,
                fakeBody = body || document.createElement('body');

            if ( parseInt(nodes, 10) ) {
                while ( nodes-- ) {
                    node = document.createElement('div');
                    node.id = testnames ? testnames[nodes] : mod + (nodes + 1);
                    div.appendChild(node);
                }
            }

            style = ['&#173;','<style id="s', mod, '">', rule, '</style>'].join('');
            div.id = mod;
            (body ? div : fakeBody).innerHTML += style;
            fakeBody.appendChild(div);
            if ( !body ) {
                fakeBody.style.background = '';
                fakeBody.style.overflow = 'hidden';
                docOverflow = docElement.style.overflow;
                docElement.style.overflow = 'hidden';
                docElement.appendChild(fakeBody);
            }

            ret = callback(div, rule);
            if ( !body ) {
                fakeBody.parentNode.removeChild(fakeBody);
                docElement.style.overflow = docOverflow;
            } else {
                div.parentNode.removeChild(div);
            }

            return !!ret;

        },



        isEventSupported = (function() {

            var TAGNAMES = {
                'select': 'input', 'change': 'input',
                'submit': 'form', 'reset': 'form',
                'error': 'img', 'load': 'img', 'abort': 'img'
            };

            function isEventSupported( eventName, element ) {

                element = element || document.createElement(TAGNAMES[eventName] || 'div');
                eventName = 'on' + eventName;

                var isSupported = eventName in element;

                if ( !isSupported ) {
                    if ( !element.setAttribute ) {
                        element = document.createElement('div');
                    }
                    if ( element.setAttribute && element.removeAttribute ) {
                        element.setAttribute(eventName, '');
                        isSupported = is(element[eventName], 'function');

                        if ( !is(element[eventName], 'undefined') ) {
                            element[eventName] = undefined;
                        }
                        element.removeAttribute(eventName);
                    }
                }

                element = null;
                return isSupported;
            }
            return isEventSupported;
        })(),


        _hasOwnProperty = ({}).hasOwnProperty, hasOwnProp;

    if ( !is(_hasOwnProperty, 'undefined') && !is(_hasOwnProperty.call, 'undefined') ) {
        hasOwnProp = function (object, property) {
            return _hasOwnProperty.call(object, property);
        };
    }
    else {
        hasOwnProp = function (object, property) {
            return ((property in object) && is(object.constructor.prototype[property], 'undefined'));
        };
    }


    if (!Function.prototype.bind) {
        Function.prototype.bind = function bind(that) {

            var target = this;

            if (typeof target != "function") {
                throw new TypeError();
            }

            var args = slice.call(arguments, 1),
                bound = function () {

                    if (this instanceof bound) {

                        var F = function(){};
                        F.prototype = target.prototype;
                        var self = new F();

                        var result = target.apply(
                            self,
                            args.concat(slice.call(arguments))
                        );
                        if (Object(result) === result) {
                            return result;
                        }
                        return self;

                    } else {

                        return target.apply(
                            that,
                            args.concat(slice.call(arguments))
                        );

                    }

                };

            return bound;
        };
    }

    function setCss( str ) {
        mStyle.cssText = str;
    }

    function setCssAll( str1, str2 ) {
        return setCss(prefixes.join(str1 + ';') + ( str2 || '' ));
    }

    function is( obj, type ) {
        return typeof obj === type;
    }

    function contains( str, substr ) {
        return !!~('' + str).indexOf(substr);
    }

    function testProps( props, prefixed ) {
        for ( var i in props ) {
            var prop = props[i];
            if ( !contains(prop, "-") && mStyle[prop] !== undefined ) {
                return prefixed == 'pfx' ? prop : true;
            }
        }
        return false;
    }

    function testDOMProps( props, obj, elem ) {
        for ( var i in props ) {
            var item = obj[props[i]];
            if ( item !== undefined) {

                if (elem === false) return props[i];

                if (is(item, 'function')){
                    return item.bind(elem || obj);
                }

                return item;
            }
        }
        return false;
    }

    function testPropsAll( prop, prefixed, elem ) {

        var ucProp  = prop.charAt(0).toUpperCase() + prop.slice(1),
            props   = (prop + ' ' + cssomPrefixes.join(ucProp + ' ') + ucProp).split(' ');

        if(is(prefixed, "string") || is(prefixed, "undefined")) {
            return testProps(props, prefixed);

        } else {
            props = (prop + ' ' + (domPrefixes).join(ucProp + ' ') + ucProp).split(' ');
            return testDOMProps(props, prefixed, elem);
        }
    }    tests['flexbox'] = function() {
        return testPropsAll('flexWrap');
    };    tests['canvas'] = function() {
        var elem = document.createElement('canvas');
        return !!(elem.getContext && elem.getContext('2d'));
    };

    tests['canvastext'] = function() {
        return !!(Modernizr['canvas'] && is(document.createElement('canvas').getContext('2d').fillText, 'function'));
    };



    tests['webgl'] = function() {
        return !!window.WebGLRenderingContext;
    };


    tests['touch'] = function() {
        var bool;

        if(('ontouchstart' in window) || window.DocumentTouch && document instanceof DocumentTouch) {
            bool = true;
        } else {
            injectElementWithStyles(['@media (',prefixes.join('touch-enabled),('),mod,')','{#modernizr{top:9px;position:absolute}}'].join(''), function( node ) {
                bool = node.offsetTop === 9;
            });
        }

        return bool;
    };



    tests['geolocation'] = function() {
        return 'geolocation' in navigator;
    };


    tests['postmessage'] = function() {
        return !!window.postMessage;
    };


    tests['websqldatabase'] = function() {
        return !!window.openDatabase;
    };

    tests['indexedDB'] = function() {
        return !!testPropsAll("indexedDB", window);
    };

    tests['hashchange'] = function() {
        return isEventSupported('hashchange', window) && (document.documentMode === undefined || document.documentMode > 7);
    };

    tests['history'] = function() {
        return !!(window.history && history.pushState);
    };

    tests['draganddrop'] = function() {
        var div = document.createElement('div');
        return ('draggable' in div) || ('ondragstart' in div && 'ondrop' in div);
    };

    tests['websockets'] = function() {
        return 'WebSocket' in window || 'MozWebSocket' in window;
    };


    tests['rgba'] = function() {
        setCss('background-color:rgba(150,255,150,.5)');

        return contains(mStyle.backgroundColor, 'rgba');
    };

    tests['hsla'] = function() {
        setCss('background-color:hsla(120,40%,100%,.5)');

        return contains(mStyle.backgroundColor, 'rgba') || contains(mStyle.backgroundColor, 'hsla');
    };

    tests['multiplebgs'] = function() {
        setCss('background:url(https://),url(https://),red url(https://)');

        return (/(url\s*\(.*?){3}/).test(mStyle.background);
    };    tests['backgroundsize'] = function() {
        return testPropsAll('backgroundSize');
    };

    tests['borderimage'] = function() {
        return testPropsAll('borderImage');
    };



    tests['borderradius'] = function() {
        return testPropsAll('borderRadius');
    };

    tests['boxshadow'] = function() {
        return testPropsAll('boxShadow');
    };

    tests['textshadow'] = function() {
        return document.createElement('div').style.textShadow === '';
    };


    tests['opacity'] = function() {
        setCssAll('opacity:.55');

        return (/^0.55$/).test(mStyle.opacity);
    };


    tests['cssanimations'] = function() {
        return testPropsAll('animationName');
    };


    tests['csscolumns'] = function() {
        return testPropsAll('columnCount');
    };


    tests['cssgradients'] = function() {
        var str1 = 'background-image:',
            str2 = 'gradient(linear,left top,right bottom,from(#9f9),to(white));',
            str3 = 'linear-gradient(left top,#9f9, white);';

        setCss(
            (str1 + '-webkit- '.split(' ').join(str2 + str1) +
                prefixes.join(str3 + str1)).slice(0, -str1.length)
        );

        return contains(mStyle.backgroundImage, 'gradient');
    };


    tests['cssreflections'] = function() {
        return testPropsAll('boxReflect');
    };


    tests['csstransforms'] = function() {
        return !!testPropsAll('transform');
    };


    tests['csstransforms3d'] = function() {

        var ret = !!testPropsAll('perspective');

        if ( ret && 'webkitPerspective' in docElement.style ) {

            injectElementWithStyles('@media (transform-3d),(-webkit-transform-3d){#modernizr{left:9px;position:absolute;height:3px;}}', function( node, rule ) {
                ret = node.offsetLeft === 9 && node.offsetHeight === 3;
            });
        }
        return ret;
    };


    tests['csstransitions'] = function() {
        return testPropsAll('transition');
    };



    tests['fontface'] = function() {
        var bool;

        injectElementWithStyles('@font-face {font-family:"font";src:url("https://")}', function( node, rule ) {
            var style = document.getElementById('smodernizr'),
                sheet = style.sheet || style.styleSheet,
                cssText = sheet ? (sheet.cssRules && sheet.cssRules[0] ? sheet.cssRules[0].cssText : sheet.cssText || '') : '';

            bool = /src/i.test(cssText) && cssText.indexOf(rule.split(' ')[0]) === 0;
        });

        return bool;
    };

    tests['generatedcontent'] = function() {
        var bool;

        injectElementWithStyles(['#',mod,'{font:0/0 a}#',mod,':after{content:"',smile,'";visibility:hidden;font:3px/1 a}'].join(''), function( node ) {
            bool = node.offsetHeight >= 3;
        });

        return bool;
    };
    tests['video'] = function() {
        var elem = document.createElement('video'),
            bool = false;

        try {
            if ( bool = !!elem.canPlayType ) {
                bool      = new Boolean(bool);
                bool.ogg  = elem.canPlayType('video/ogg; codecs="theora"')      .replace(/^no$/,'');

                bool.h264 = elem.canPlayType('video/mp4; codecs="avc1.42E01E"') .replace(/^no$/,'');

                bool.webm = elem.canPlayType('video/webm; codecs="vp8, vorbis"').replace(/^no$/,'');
            }

        } catch(e) { }

        return bool;
    };

    tests['audio'] = function() {
        var elem = document.createElement('audio'),
            bool = false;

        try {
            if ( bool = !!elem.canPlayType ) {
                bool      = new Boolean(bool);
                bool.ogg  = elem.canPlayType('audio/ogg; codecs="vorbis"').replace(/^no$/,'');
                bool.mp3  = elem.canPlayType('audio/mpeg;')               .replace(/^no$/,'');

                bool.wav  = elem.canPlayType('audio/wav; codecs="1"')     .replace(/^no$/,'');
                bool.m4a  = ( elem.canPlayType('audio/x-m4a;')            ||
                    elem.canPlayType('audio/aac;'))             .replace(/^no$/,'');
            }
        } catch(e) { }

        return bool;
    };


    tests['localstorage'] = function() {
        try {
            localStorage.setItem(mod, mod);
            localStorage.removeItem(mod);
            return true;
        } catch(e) {
            return false;
        }
    };

    tests['sessionstorage'] = function() {
        try {
            sessionStorage.setItem(mod, mod);
            sessionStorage.removeItem(mod);
            return true;
        } catch(e) {
            return false;
        }
    };


    tests['webworkers'] = function() {
        return !!window.Worker;
    };


    tests['applicationcache'] = function() {
        return !!window.applicationCache;
    };


    tests['svg'] = function() {
        return !!document.createElementNS && !!document.createElementNS(ns.svg, 'svg').createSVGRect;
    };

    tests['inlinesvg'] = function() {
        var div = document.createElement('div');
        div.innerHTML = '<svg/>';
        return (div.firstChild && div.firstChild.namespaceURI) == ns.svg;
    };

    tests['smil'] = function() {
        return !!document.createElementNS && /SVGAnimate/.test(toString.call(document.createElementNS(ns.svg, 'animate')));
    };


    tests['svgclippaths'] = function() {
        return !!document.createElementNS && /SVGClipPath/.test(toString.call(document.createElementNS(ns.svg, 'clipPath')));
    };

    function webforms() {
        Modernizr['input'] = (function( props ) {
            for ( var i = 0, len = props.length; i < len; i++ ) {
                attrs[ props[i] ] = !!(props[i] in inputElem);
            }
            if (attrs.list){
                attrs.list = !!(document.createElement('datalist') && window.HTMLDataListElement);
            }
            return attrs;
        })('autocomplete autofocus list placeholder max min multiple pattern required step'.split(' '));
        Modernizr['inputtypes'] = (function(props) {

            for ( var i = 0, bool, inputElemType, defaultView, len = props.length; i < len; i++ ) {

                inputElem.setAttribute('type', inputElemType = props[i]);
                bool = inputElem.type !== 'text';

                if ( bool ) {

                    inputElem.value         = smile;
                    inputElem.style.cssText = 'position:absolute;visibility:hidden;';

                    if ( /^range$/.test(inputElemType) && inputElem.style.WebkitAppearance !== undefined ) {

                        docElement.appendChild(inputElem);
                        defaultView = document.defaultView;

                        bool =  defaultView.getComputedStyle &&
                            defaultView.getComputedStyle(inputElem, null).WebkitAppearance !== 'textfield' &&
                            (inputElem.offsetHeight !== 0);

                        docElement.removeChild(inputElem);

                    } else if ( /^(search|tel)$/.test(inputElemType) ){
                    } else if ( /^(url|email)$/.test(inputElemType) ) {
                        bool = inputElem.checkValidity && inputElem.checkValidity() === false;

                    } else {
                        bool = inputElem.value != smile;
                    }
                }

                inputs[ props[i] ] = !!bool;
            }
            return inputs;
        })('search tel url email datetime date month week time datetime-local number range color'.split(' '));
    }
    for ( var feature in tests ) {
        if ( hasOwnProp(tests, feature) ) {
            featureName  = feature.toLowerCase();
            Modernizr[featureName] = tests[feature]();

            classes.push((Modernizr[featureName] ? '' : 'no-') + featureName);
        }
    }

    Modernizr.input || webforms();


    Modernizr.addTest = function ( feature, test ) {
        if ( typeof feature == 'object' ) {
            for ( var key in feature ) {
                if ( hasOwnProp( feature, key ) ) {
                    Modernizr.addTest( key, feature[ key ] );
                }
            }
        } else {

            feature = feature.toLowerCase();

            if ( Modernizr[feature] !== undefined ) {
                return Modernizr;
            }

            test = typeof test == 'function' ? test() : test;

            if (typeof enableClasses !== "undefined" && enableClasses) {
                docElement.className += ' ' + (test ? '' : 'no-') + feature;
            }
            Modernizr[feature] = test;

        }

        return Modernizr;
    };


    setCss('');
    modElem = inputElem = null;

    ;(function(window, document) {
        var version = '3.7.0';

        var options = window.html5 || {};

        var reSkip = /^<|^(?:button|map|select|textarea|object|iframe|option|optgroup)$/i;

        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;

        var supportsHtml5Styles;

        var expando = '_html5shiv';

        var expanID = 0;

        var expandoData = {};

        var supportsUnknownElements;

        (function() {
            try {
                var a = document.createElement('a');
                a.innerHTML = '<xyz></xyz>';
                supportsHtml5Styles = ('hidden' in a);

                supportsUnknownElements = a.childNodes.length == 1 || (function() {
                    (document.createElement)('a');
                    var frag = document.createDocumentFragment();
                    return (
                        typeof frag.cloneNode == 'undefined' ||
                            typeof frag.createDocumentFragment == 'undefined' ||
                            typeof frag.createElement == 'undefined'
                        );
                }());
            } catch(e) {
                supportsHtml5Styles = true;
                supportsUnknownElements = true;
            }

        }());

        function addStyleSheet(ownerDocument, cssText) {
            var p = ownerDocument.createElement('p'),
                parent = ownerDocument.getElementsByTagName('head')[0] || ownerDocument.documentElement;

            p.innerHTML = 'x<style>' + cssText + '</style>';
            return parent.insertBefore(p.lastChild, parent.firstChild);
        }

        function getElements() {
            var elements = html5.elements;
            return typeof elements == 'string' ? elements.split(' ') : elements;
        }

        function getExpandoData(ownerDocument) {
            var data = expandoData[ownerDocument[expando]];
            if (!data) {
                data = {};
                expanID++;
                ownerDocument[expando] = expanID;
                expandoData[expanID] = data;
            }
            return data;
        }

        function createElement(nodeName, ownerDocument, data){
            if (!ownerDocument) {
                ownerDocument = document;
            }
            if(supportsUnknownElements){
                return ownerDocument.createElement(nodeName);
            }
            if (!data) {
                data = getExpandoData(ownerDocument);
            }
            var node;

            if (data.cache[nodeName]) {
                node = data.cache[nodeName].cloneNode();
            } else if (saveClones.test(nodeName)) {
                node = (data.cache[nodeName] = data.createElem(nodeName)).cloneNode();
            } else {
                node = data.createElem(nodeName);
            }

            return node.canHaveChildren && !reSkip.test(nodeName) && !node.tagUrn ? data.frag.appendChild(node) : node;
        }

        function createDocumentFragment(ownerDocument, data){
            if (!ownerDocument) {
                ownerDocument = document;
            }
            if(supportsUnknownElements){
                return ownerDocument.createDocumentFragment();
            }
            data = data || getExpandoData(ownerDocument);
            var clone = data.frag.cloneNode(),
                i = 0,
                elems = getElements(),
                l = elems.length;
            for(;i<l;i++){
                clone.createElement(elems[i]);
            }
            return clone;
        }

        function shivMethods(ownerDocument, data) {
            if (!data.cache) {
                data.cache = {};
                data.createElem = ownerDocument.createElement;
                data.createFrag = ownerDocument.createDocumentFragment;
                data.frag = data.createFrag();
            }


            ownerDocument.createElement = function(nodeName) {
                if (!html5.shivMethods) {
                    return data.createElem(nodeName);
                }
                return createElement(nodeName, ownerDocument, data);
            };

            ownerDocument.createDocumentFragment = Function('h,f', 'return function(){' +
                'var n=f.cloneNode(),c=n.createElement;' +
                'h.shivMethods&&(' +
                getElements().join().replace(/[\w\-]+/g, function(nodeName) {
                    data.createElem(nodeName);
                    data.frag.createElement(nodeName);
                    return 'c("' + nodeName + '")';
                }) +
                ');return n}'
            )(html5, data.frag);
        }

        function shivDocument(ownerDocument) {
            if (!ownerDocument) {
                ownerDocument = document;
            }
            var data = getExpandoData(ownerDocument);

            if (html5.shivCSS && !supportsHtml5Styles && !data.hasCSS) {
                data.hasCSS = !!addStyleSheet(ownerDocument,
                    'article,aside,dialog,figcaption,figure,footer,header,hgroup,main,nav,section{display:block}' +
                        'mark{background:#FF0;color:#000}' +
                        'template{display:none}'
                );
            }
            if (!supportsUnknownElements) {
                shivMethods(ownerDocument, data);
            }
            return ownerDocument;
        }

        var html5 = {

            'elements': options.elements || 'abbr article aside audio bdi canvas data datalist details dialog figcaption figure footer header hgroup main mark meter nav output progress section summary template time video',

            'version': version,

            'shivCSS': (options.shivCSS !== false),

            'supportsUnknownElements': supportsUnknownElements,

            'shivMethods': (options.shivMethods !== false),

            'type': 'default',

            'shivDocument': shivDocument,

            createElement: createElement,

            createDocumentFragment: createDocumentFragment
        };

        window.html5 = html5;

        shivDocument(document);

    }(this, document));

    Modernizr._version      = version;

    Modernizr._prefixes     = prefixes;
    Modernizr._domPrefixes  = domPrefixes;
    Modernizr._cssomPrefixes  = cssomPrefixes;


    Modernizr.hasEvent      = isEventSupported;

    Modernizr.testProp      = function(prop){
        return testProps([prop]);
    };

    Modernizr.testAllProps  = testPropsAll;


    Modernizr.testStyles    = injectElementWithStyles;
    Modernizr.prefixed      = function(prop, obj, elem){
        if(!obj) {
            return testPropsAll(prop, 'pfx');
        } else {
            return testPropsAll(prop, obj, elem);
        }
    };


    docElement.className = docElement.className.replace(/(^|\s)no-js(\s|$)/, '$1$2') +

        (enableClasses ? ' js ' + classes.join(' ') : '');

    return Modernizr;

})(this, this.document);
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