/*!

* classie - class helper functions
* from bonzo https://github.com/ded/bonzo
* 
* classie.has( elem, 'my-class' ) -> true/false
* classie.add( elem, 'my-new-class' )
* classie.remove( elem, 'my-unwanted-class' )
* classie.toggle( elem, 'my-class' )
*/

/*jshint browser: true, strict: true, undef: true */ /*global define: false */

( function( window ) {

'use strict';

// class helper functions from bonzo github.com/ded/bonzo

function classReg( className ) {

return new RegExp("(^|\\s+)" + className + "(\\s+|$)");

}

// classList support for class management // altho to be fair, the api sucks because it won't accept multiple classes at once var hasClass, addClass, removeClass;

if ( 'classList' in document.documentElement ) {

hasClass = function( elem, c ) {
  return elem.classList.contains( c );
};
addClass = function( elem, c ) {
  elem.classList.add( c );
};
removeClass = function( elem, c ) {
  elem.classList.remove( c );
};

} else {

hasClass = function( elem, c ) {
  return classReg( c ).test( elem.className );
};
addClass = function( elem, c ) {
  if ( !hasClass( elem, c ) ) {
    elem.className = elem.className + ' ' + c;
  }
};
removeClass = function( elem, c ) {
  elem.className = elem.className.replace( classReg( c ), ' ' );
};

}

function toggleClass( elem, c ) {

var fn = hasClass( elem, c ) ? removeClass : addClass;
fn( elem, c );

}

var classie = {

// full names
hasClass: hasClass,
addClass: addClass,
removeClass: removeClass,
toggleClass: toggleClass,
// short names
has: hasClass,
add: addClass,
remove: removeClass,
toggle: toggleClass

};

// transport if ( typeof define === 'function' && define.amd ) {

// AMD
define( classie );

} else {

// browser global
window.classie = classie;

}

})( window );