/**

 * jQuery Spin 1.1.1

 *

 * Copyright (c) 2009 Naohiko MORI

 * Dual licensed under the MIT and GPL licenses.

 *

 **/

(function($){

  var calcFloat = {

    get: function(num){

      var num = num.toString();

      if(num.indexOf('.')==-1) return[0, eval(num)];

      var nn = num.split('.');

      var po = nn[1].length;

      var st = nn.join('');

      var sign = '';

      if(st.charAt(0)=='-'){

        st = st.substr(1);

        sign = '-';

      }

      for(var i=0; i<st.length; ++i) if(st.charAt(0)=='0') st=st.substr(1, st.length);

      st = sign + st;

      return [po, eval(st)];

    },

    getInt: function(num, figure){

      var d = Math.pow(10, figure);

      var n = this.get(num);

      var v1 = eval('num * d');

      var v2 = eval('n[1] * d');

      if(this.get(v1)[1]==v2) return v1;

      return(n[0]==0 ? v1 : eval(v2 + '/Math.pow(10, n[0])'));

    },

    sum: function(v1, v2){

      var n1 = this.get(v1);

      var n2 = this.get(v2);

      var figure = (n1[0] > n2[0] ? n1[0] : n2[0]);

      v1 = this.getInt(v1, figure);

      v2 = this.getInt(v2, figure);

      return eval('v1 + v2')/Math.pow(10, figure);

    }

  };

  $.extend({

    spin: {

      imageBasePath: '/soc/content/images/',

      spinBtnImage: 'spin-button.png',

      spinUpImage: 'spin-up.png',

      spinDownImage: 'spin-down.png',

      interval: 1,

      max: null,

      min: null,

      timeInterval: 500,

      timeBlink: 200,

      btnClass: null,

      btnCss: {cursor: 'pointer', padding: 0, margin: 0, verticalAlign: 'middle'},

      txtCss: {marginRight: 0, paddingRight: 0},

      lock: false,

      decimal: null,

      beforeChange: null,

      changed: null,

      buttonUp: null,

      buttonDown: null

    }

  });

  $.fn.extend({

    spin: function(o){

      return this.each(function(){

				o = o || {};

				var opt = {};

				$.each($.spin, function(k,v){

					opt[k] = (typeof o[k]!='undefined' ? o[k] : v);

				});

        var txt = $(this);

        var spinBtnImage = opt.imageBasePath+opt.spinBtnImage;

        var btnSpin = new Image();

        btnSpin.src = spinBtnImage;

        var spinUpImage = opt.imageBasePath+opt.spinUpImage;

        var btnSpinUp = new Image();

        btnSpinUp.src = spinUpImage;

        var spinDownImage = opt.imageBasePath+opt.spinDownImage;

        var btnSpinDown = new Image();

        btnSpinDown.src = spinDownImage;

        var btn = $(document.createElement('img'));

        btn.attr('src', spinBtnImage);

        if(opt.btnClass) btn.addClass(opt.btnClass);

        if(opt.btnCss) btn.css(opt.btnCss);

        if(opt.txtCss) txt.css(opt.txtCss);

        txt.after(btn);

				if(opt.lock){

					txt.focus(function(){txt.blur();});

        }

        function spin(vector){

          var val = txt.val();

          var org_val = val;

          if(opt.decimal) val=val.replace(opt.decimal, '.');

          if(!isNaN(val)){

            val = calcFloat.sum(val, vector * opt.interval);

            if(opt.min!==null && val<opt.min) val=opt.min;

            if(opt.max!==null && val>opt.max) val=opt.max;

            if(val != txt.val()){

              if(opt.decimal) val=val.toString().replace('.', opt.decimal);

              var ret = ($.isFunction(opt.beforeChange) ? opt.beforeChange.apply(txt, [val, org_val]) : true);

              if(ret!==false){

                txt.val(val);

                if($.isFunction(opt.changed)) opt.changed.apply(txt, [val]);

                txt.change();

                src = (vector > 0 ? spinUpImage : spinDownImage);

                btn.attr('src', src);

                if(opt.timeBlink<opt.timeInterval)

                  setTimeout(function(){btn.attr('src', spinBtnImage);}, opt.timeBlink);

              }

            }

          }

          if(vector > 0){

            if($.isFunction(opt.buttonUp)) opt.buttonUp.apply(txt, [val]);

          }else{

            if($.isFunction(opt.buttonDown)) opt.buttonDown.apply(txt, [val]);

          }

        }

        btn.mousedown(function(e){

          var pos = e.pageY - btn.offset().top;

          var vector = (btn.height()/2 > pos ? 1 : -1);

          (function(){

            spin(vector);

            var tk = setTimeout(arguments.callee, opt.timeInterval);

            $(document).one('mouseup', function(){

              clearTimeout(tk); btn.attr('src', spinBtnImage);

            });

          })();

          return false;

        });

      });

    }

  });

})(jQuery);