/*
 * jQuery.anchorSmooth
 *
 *
 *
 */

;(function ($, window, undefined ) {
  var loc = window.location;
  $.fn.anchorSmoothScroll = function (options) {
    var $this = this;
    var conf = $.extend({
      'evt' : 'click',
      'easing' : 'swing',
      'duration' : 1000,
      'notSelecter' : '',
      'callback' : function(){}
    },options || {});
    
    var cb = conf.callback;
    
    return $this.each (function (i) {
      var sameFile = function (el) {
        if (!el) return;
        if (!!el.length) el = el.get();
        var chk = loc.pathname.replace(/^\//, '') === el.pathname.replace(/^\//, '') && loc.hostname === el.hostname;

        if (!chk) return false;
        var target = $(el.hash);
        target = target.length && target || $('[name=' + el.hash.slice(1) + ']');
        if (!!target.length) {
          return {
            from : el,
            to : target.get(0), 
            offset : target.offset()
          };
        }  
      };

      $this.find('a[href*=#]').filter(function(){
        if (!$(this).closest(conf.notSelecter).length) return $(this);
      }).on(conf.evt, function() {
        var obj = sameFile(this);
        //console.log(sameFile(this));
        if (typeof obj.offset !== 'undefined') {
          $('html,body').animate({
              scrollTop: obj.offset.top
            },{
              easing: conf.easing,
              duration: conf.duration,
              complete : cb && cb.call(this,obj),
              step: function () {},
              queue: false   
            }
          );
          return false;
        }
      });   
    });
  };
})(jQuery, this, undefined);