/*
  @author: remy sharp
  @date: 2006-12-15
  @description: step increment object
  @version: $Id$
*/

var stepper = function(s, dp) {
  // sanity watchers
  if (s && typeof s == 'string') s = parseFloat(s)
  if (dp && typeof dp == 'string') dp = parseFloat(dp)
  
  if (arguments.length == 1) dp = -1

  this.s = s // step increment (aka pip)
  this.dp = dp // decimal places to keep

  this.running = true;

  this.validate()

  return this    
}

stepper.prototype = {  
  validate: function() {
    if (parseFloat(this.setDP(this.s)) == 0) {
      alert("The decimal places cannot be shorter than the PIP.\ndp = " + this.dp + ", pip = " + this.s)
    }
  },
  
  mul: function() { return Math.pow(10, this.dp == -1 ? 1 : this.dp) },
  
  upToInt: function(n) {
    return Math.round(n * this.mul()) // handle dp recursion
  },
  
  downToFloat: function(n) {
    return (n / this.mul())
  },
  
  setDP: function(n) {
    var r = n.toString()
    
    // -1 on dp means leave as is
    if (this.dp == -1) return r
    
    // handle whole numbers
    if (this.dpLen(r) == -1 && this.dp > 0) r += ".0"
    else if (this.dpLen(r) == -1 && this.dp == 0) return r
    
    // handle fractions
    if (this.dpLen(r) > this.dp) { // strip
      var i = r.indexOf('.')
      r = r.substring(0, i) + '.' + r.substring(i + 1, i + 1 + this.dp)
    } else { // add
      while (this.dpLen(r) < this.dp) r += "0"
    }
    return r
  },
  
  dpLen: function(n) {
    if (n.indexOf('.') == -1)
      return -1
    else
      return (n.length) - (n.indexOf('.') + 1)
  },

  step: function(n) {
    if (arguments.length) {
      if (arguments[0] && typeof arguments[0] == 'string') {
        this.n = parseFloat(arguments[0])
      } else if (arguments[0] == NaN) {
        this.n = 0
      } else {
        this.n = arguments[0]
      }
    } else {
      alert("stepper::step expects a float value")
      return
    }          
    
    var n = this.upToInt(this.n)
    var s = this.upToInt(this.s)
    var r = this.setDP(this.downToFloat(n - (n % s) + s))
        
    return r
  }
}

/**
 * jQuery mousehold plugin - fires an event while the mouse is clicked down.
 * Additionally, the function, when executed, is passed a single
 * argument representing the count of times the event has been fired during
 * this session of the mouse hold.
 *
 * @author Remy Sharp (leftlogic.com)
 * @date 2006-12-15
 * @example $("img").mousehold(200, function(i){  })
 * @desc Repeats firing the passed function while the mouse is clicked down
 *
 * @name mousehold
 * @type jQuery
 * @param Number timeout The frequency to repeat the event in milliseconds
 * @param Function fn A function to execute
 * @cat Plugin
 */

jQuery.fn.mousehold = function(timeout, f) {
  if (timeout && typeof timeout == 'function') {
    f = timeout;
    timeout = 50;
  }
  if (f && typeof f == 'function') {
    var timer = 0;
    var fireStep = 0;
    return this.each(function() {
      jQuery(this).mousedown(function() {
        fireStep = 1;
        var ctr = 0;
        var t = this;
        timer = setInterval(function() {
          ctr++;
          f.call(t, ctr);
          fireStep = 2;
        }, timeout);
      })

      clearMousehold = function() {
        clearInterval(timer);
        if (fireStep == 1) f.call(this, 1);
        fireStep = 0;
      }
      
      jQuery(this).mouseout(clearMousehold);
      jQuery(this).mouseup(clearMousehold);
    })
  }
}



/* EDIT FROM HERE */ 

running = true;
      $(function(){
        $('div.controler').each(function(){
          var pipDiv = this;
          $('a', pipDiv).each(function(){
            var href = $(this).attr("href")
            $(this).mousehold(function(i) {
              var pip = 15
              var hrefPip = parseFloat(href.match(/spin=([\-0-9\.]+)/)[1])
              var dp = 0
              if (hrefPip < 0) pip *= -1
              if (!pip) pip = hrefPip
                            
              var s = new stepper(pip, dp)
/*              console.log("hit number", i)*/
              var v = parseFloat($('input', pipDiv).val())
              $('input', pipDiv).val(s.step(v))
              //alert(s.step(v));
              s.step(v)
              scrollto(s.step(v));
            })
          })
        })
        
        $('div.controler a').click(function(){ return false })
      })
      
function scrollto(scroll) {
  //$scrollto = $(".textscroll").scrollTop() + scroll;
  $(".textscroll").scrollTop(scroll);      
}