modernizr.mq.js

/* Modernizr 2.6.1 (Custom Build) | MIT & BSD
 * Build: http://modernizr.com/download/#-mq-teststyles
 */
;



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

    var version = '2.6.1',

    Modernizr = {},


    docElement = document.documentElement,

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

    inputElem  ,


    toString = {}.toString,    tests = {},
    inputs = {},
    attrs = {},

    classes = [],

    slice = classes.slice,

    featureName, 


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

      var style, ret, node,
          div = document.createElement('div'),
                body = document.body,
                fakeBody = body ? 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 = "";
          docElement.appendChild(fakeBody);
      }

      ret = callback(div, rule);
        !body ? fakeBody.parentNode.removeChild(fakeBody) : div.parentNode.removeChild(div);

      return !!ret;

    },

    testMediaQuery = function( mq ) {

      var matchMedia = window.matchMedia || window.msMatchMedia;
      if ( matchMedia ) {
        return matchMedia(mq).matches;
      }

      var bool;

      injectElementWithStyles('@media ' + mq + ' { #' + mod + ' { position: absolute; } }', function( node ) {
        bool = (window.getComputedStyle ?
                  getComputedStyle(node, null) :
                  node.currentStyle)['position'] == 'absolute';
      });

      return bool;

     },
    _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 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;
    }
    for ( var feature in tests ) {
        if ( hasOwnProp(tests, feature) ) {
                                    featureName  = feature.toLowerCase();
            Modernizr[featureName] = tests[feature]();

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



     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 (enableClasses) {
           docElement.className += ' ' + (test ? '' : 'no-') + feature;
         }
         Modernizr[feature] = test;

       }

       return Modernizr; 
     };


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


    Modernizr._version      = version;


    Modernizr.mq            = testMediaQuery;
    Modernizr.testStyles    = injectElementWithStyles;
    return Modernizr;

})(this, this.document);
;