/***************************************************************
 *  FC-TrackBar
 *
 *   Copyright (C) 2008 by Alexander Burtsev - fastcoder.org
 *   and abarmot - http://abarmot.habrahabr.ru/
 *   designed by Svetlana Solov'eva - http://avis-solo.blogspot.com/
 *
 *  This code is a public domain.
 ***************************************************************/

var trackbar = { // NAMESPACE
  archive : {},
  getObject : function(id) {
    if (typeof this.archive[id] == "undefined") {
      this.archive[id] = new this.hotSearch(id);
    }
    return this.archive[id];
  }
};

trackbar.hotSearch = function(id) { // Constructor
  // Vars
  this.id = id;
  
  this.leftWidth = 0; // px
  this.rightWidth = 0; // px
  this.width = 100; // px
  this.intervalWidth = 0; // px
  
  this.leftLimit = 0;
  this.leftValue = 0;
  this.rightLimit = 100;
  this.rightValue = 0;
  this.valueInterval = 0;
  this.widthRem = 6;
  this.valueWidth = 0;
  this.roundUp = 0;
  
  this.x0 = 0; this.y0 = 0;
  this.blockX0 = 0; 
  this.rightX0 = 0; 
  this.leftX0 = 0;
  // Flags
  this.dual = true;
  this.moveState = false;
  this.moveIntervalState = false;
  this.debugMode = true;
  this.clearLimits = false;
  this.clearValues = false;
  this.nodeInit = false;
  this.itWasMove = false;
  
  this.showSmallTicks = false;
  this.showBigTicks = false;
  this.smallTicks = 1;
  this.bigTicks = 1;
  // Handlers
  this.onMove = function() {};
  // Nodes
  this.leftBlock = null;
  this.rightBlock = null;
  this.leftBegun = null;
  this.rightBegun = null;
  this.centerBlock = null;
  this.tickDiv = null;
  this.table = null;
}

trackbar.hotSearch.prototype = {
// Const
  ERRORS : {
    1 : "Object initialization error",
    2 : "Left slider was not found",
    3 : "Right slider was not found",
    4 : "Left resize area was not found",
    5 : "Right resize area was not found",
    9 : "Center click area was not found"
  },
  LEFT_BLOCK_PREFIX : "leftBlock_",
  RIGHT_BLOCK_PREFIX : "rightBlock_",
  LEFT_BEGUN_PREFIX : "leftBegun_",
  RIGHT_BEGUN_PREFIX : "rightBegun_",
  CENTER_BLOCK_PREFIX : "centerBlock_",
  TABLE_PREFIX : "fctable_",
  TICKDIV_PREFIX : "tickdiv_",
// Methods
  // Default
  gebi : function(id) {
    return document.getElementById(id);
  },
  addHandler : function(object, event, handler, useCapture) {
    if (object.addEventListener) {
      object.addEventListener(event, handler, useCapture ? useCapture : false);
    } else if (object.attachEvent) {
      object.attachEvent('on' + event, handler);
    } else alert(this.errorArray[9]);
  },
  defPosition : function(event) { 
    var x = y = 0; 
    if (document.attachEvent != null) {
      x = window.event.clientX + document.documentElement.scrollLeft + document.body.scrollLeft; 
      y = window.event.clientY + document.documentElement.scrollTop + document.body.scrollTop; 
    } 
    if (!document.attachEvent && document.addEventListener) { // Gecko 
      x = event.clientX + window.scrollX; 
      y = event.clientY + window.scrollY; 
    } 
    return {x:x, y:y}; 
  },
  absPosition : function(obj) { 
    var x = y = 0; 
    while(obj) { 
      x += obj.offsetLeft; 
      y += obj.offsetTop; 
      obj = obj.offsetParent; 
    } 
    return {x:x, y:y}; 
  },
  /* 
    Method domReady - Copyright http://ajaxian.com/
    More fun with DOMContentLoaded
    http://ajaxian.com/archives/more-fun-with-domcontentloaded
  */
  domReady : function(i) {
    var u =navigator.userAgent;
    var e=/*@cc_on!@*/false;
    var st = setTimeout;
    if (/webkit/i.test(u)) {
      st(
        function() {
          var dr=document.readyState;
          if(dr=="loaded"||dr=="complete"){
            i()
          } else {
            st(arguments.callee,10);
          }
        },
        10
      );
    } else if ((/mozilla/i.test(u)&&!/(compati)/.test(u)) || (/opera/i.test(u))) {
      document.addEventListener("DOMContentLoaded", i, false);
    } else if (e) {(
      function(){
        var t=document.createElement('doc:rdy');
        try {
          t.doScroll('left');
          i();
          t=null;
        } catch(e) {
          st(arguments.callee,0);
        }
      })();
    } else {
      window.onload=i;
    }
  },
  // Common
  debug : function(keys) {
    if (!this.debugMode) return;
    var mes = "";
    for (var i = 0; i < keys.length; i++) mes += this.ERRORS[keys[i]] + " : ";
    mes = mes.substring(0, mes.length - 3);
    alert(mes);
    this.table.style.display = "none";
  },
  init : function(hash, node) {
    if (typeof node != "undefined" && !this.nodeInit) {
      this.nodeInit = true;
      var _this = this;
      this.domReady(
        function() {_this.init(hash, node)}
      );
      return;
    }
    if (typeof node == "string") node = this.gebi(node);
    else node = false;
    try {
      for (var i in hash) this[i] = hash[i];
      // 
      if (this.leftValue < this.leftLimit) this.leftValue = this.leftLimit;
      if (this.rightValue > this.rightLimit) this.rightValue = this.rightLimit;
      // HTML Write
      var code = '<div class="tickdiv" id="'+this.TICKDIV_PREFIX+this.id+'"></div><table id="'+this.TABLE_PREFIX+this.id+'" ' + (this.width ? ' style="width:'+this.width+'px;"' : '') + 'class="trackbar" onSelectStart="return false;">\
        <tr>\
          <td class="l"><div id="leftBlock_' + this.id + '"><span></span><span class="limit"></span><img id="leftBegun_' + this.id + '" ondragstart="return false;" src="/img/imgtrackbar/b_l.gif" width="5" height="17" alt="" /></div></td>\
          <td class="c" id="centerBlock_' + this.id + '"></td>\
          <td class="r"><div id="rightBlock_' + this.id + '"><span></span><span class="limit"></span><img id="rightBegun_' + this.id + '" ondragstart="return false;" src="/img/imgtrackbar/b_r.gif" width="5" height="17" alt="" /></div></td>\
        </tr>\
      </table>';
      if (node) node.innerHTML = code;
      else document.write(code)
      // Is all right?
      this.leftBegun = this.gebi(this.LEFT_BEGUN_PREFIX + this.id);
      if (this.leftBegun == null) {this.debug([1,2]); return;}

      this.rightBegun = this.gebi(this.RIGHT_BEGUN_PREFIX + this.id);
      if (this.rightBegun == null) {this.debug([1,3]); return;}

      this.leftBlock = this.gebi(this.LEFT_BLOCK_PREFIX + this.id);
      if (this.leftBlock == null) {this.debug([1,4]); return;}

      this.rightBlock = this.gebi(this.RIGHT_BLOCK_PREFIX + this.id);
      if (this.rightBlock == null) {this.debug([1,5]); return;}

      this.centerBlock = this.gebi(this.CENTER_BLOCK_PREFIX + this.id);
      if (this.centerBlock == null) {this.debug([1,9]); return;}
      
      this.table = this.gebi(this.TABLE_PREFIX + this.id);
      this.tickDiv = this.gebi(this.TICKDIV_PREFIX + this.id);
      // Set default
      this.valueWidth = this.width - 2 * this.widthRem;
      this.rightValue = this.rightValue || this.rightLimit;
      this.leftValue = this.leftValue || this.leftLimit;
      if (!this.dual) this.rightValue = this.leftValue;
      this.valueInterval = this.rightLimit - this.leftLimit;
      this.leftWidth = Math.abs(parseInt((this.leftValue - this.leftLimit) / this.valueInterval * this.valueWidth) + this.widthRem);
      this.rightWidth = Math.abs(this.valueWidth - parseInt((this.rightValue - this.leftLimit) / this.valueInterval * this.valueWidth) + this.widthRem);
      // Set limits
      if (!this.clearLimits) {
        this.leftBlock.firstChild.nextSibling.innerHTML = this.leftLimit;
        this.rightBlock.firstChild.nextSibling.innerHTML = this.rightLimit;
      }
      // Do it!
      this.setCurrentState();
      this.drawTicks();
      this.onMove();
      // Add handers
      var _this = this;
      this.addHandler (
        document,
        "mousemove",
        function(evt) {
          if (_this.moveState) _this.moveHandler(evt);
          if (_this.moveIntervalState) _this.moveIntervalHandler(evt);
        }
      );
      this.addHandler (
        document,
        "mouseup",
        function() {
          _this.moveState = false;
          _this.moveIntervalState = false;
        }
      );
      this.addHandler (
        this.leftBegun,
        "mousedown",
        function(evt) {
          evt = evt || window.event;
          if (evt.preventDefault) evt.preventDefault();
          evt.returnValue = false;
          _this.moveState = "left";
          _this.x0 = _this.defPosition(evt).x;
          _this.blockX0 = _this.leftWidth;
        }
      );
      this.addHandler (
        this.rightBegun,
        "mousedown",
        function(evt) {
          evt = evt || window.event;
          if (evt.preventDefault) evt.preventDefault();
          evt.returnValue = false;
          _this.moveState = "right";
          _this.x0 = _this.defPosition(evt).x;
          _this.blockX0 = _this.rightWidth;
        }
      );
      this.addHandler (
        this.centerBlock,
        "mousedown",
        function(evt) {
          evt = evt || window.event;
          if (evt.preventDefault) evt.preventDefault();
          evt.returnValue = false;
          _this.moveIntervalState = true;
          _this.intervalWidth = _this.width - _this.rightWidth - _this.leftWidth;
          _this.x0 = _this.defPosition(evt).x;
          _this.rightX0 = _this.rightWidth; 
          _this.leftX0 = _this.leftWidth;
        }
      ),
      this.addHandler (
        this.centerBlock,
        "click",
        function(evt) {
          if (!_this.itWasMove) _this.clickMove(evt);
          _this.itWasMove = false;
        }
      );
      this.addHandler (
        this.leftBlock,
        "click",
        function(evt) {
          if (!_this.itWasMove)_this.clickMoveLeft(evt);
          _this.itWasMove = false;
        }
      );
      this.addHandler (
        this.rightBlock,
        "click",
        function(evt) {
          if (!_this.itWasMove)_this.clickMoveRight(evt);
          _this.itWasMove = false;
        }
      );
    } catch(e) {this.debug([1]);}
  },
  drawTicks : function() {
    if (this.showBigTicks) for (var i = 1; i <= this.bigTicks; i++) this.tickDiv.innerHTML += '<div style="left:'+(this.widthRem + i * this.valueWidth / (this.bigTicks + 1))+'px" class="tick"><span>' + parseInt(this.leftLimit + i * this.valueInterval/ (this.bigTicks + 1)) + '</span></div>';
    if (this.showSmallTicks) for (i = 1; i <= (this.smallTicks + 1) * (this.bigTicks + 1) - 1; i++) this.tickDiv.innerHTML += '<div style="left:'+(this.widthRem + i * this.valueWidth / ((this.smallTicks + 1) * (this.bigTicks + 1)))+'px" class="stick"></div>';
  },
  clickMoveRight : function(evt) {
    evt = evt || window.event;
    if (evt.preventDefault) evt.preventDefault();
    evt.returnValue = false;
    var x = this.defPosition(evt).x - this.absPosition(this.rightBlock).x;
    var w = this.rightBlock.offsetWidth;
    if (x <= 0 || w <= 0 || w < x || (w - x) < this.widthRem) return;
    this.rightWidth = (w - x);
    this.rightCounter();

    this.setCurrentState();
    this.onMove();
  },
  clickMoveLeft : function(evt) {
    evt = evt || window.event;
    if (evt.preventDefault) evt.preventDefault();
    evt.returnValue = false;
    var x = this.defPosition(evt).x - this.absPosition(this.leftBlock).x;
    var w = this.leftBlock.offsetWidth;
    if (x <= 0 || w <= 0 || w < x || x < this.widthRem) return;
    this.leftWidth = x;
    this.leftCounter();

    this.setCurrentState();
    this.onMove();
  },
  clickMove : function(evt) {
    evt = evt || window.event;
    if (evt.preventDefault) evt.preventDefault();
    evt.returnValue = false;
    var x = this.defPosition(evt).x - this.absPosition(this.centerBlock).x;
    var w = this.centerBlock.offsetWidth;
    if (x <= 0 || w <= 0 || w < x) return;
    if (x >= w / 2) {
      this.rightWidth += (w - x);
      this.rightCounter();
    } else {
      this.leftWidth += x;
      this.leftCounter();
    }
    this.setCurrentState();
    this.onMove();
  },
  setCurrentState : function() {
    this.leftBlock.style.width = this.leftWidth + "px";
    if (!this.clearValues) this.leftBlock.firstChild.innerHTML = (!this.dual && this.leftWidth > this.width / 2) ? "" : this.leftValue;
    if(!this.dual) {
      var x = this.leftBlock.firstChild.offsetWidth;
      this.leftBlock.firstChild.style.right = (this.widthRem * (1 - 2 * (this.leftWidth - this.widthRem) / this.width) - ((this.leftWidth - this.widthRem) * x / this.width)) + 'px';
    }
    this.rightBlock.style.width = this.rightWidth + "px";
    if (!this.clearValues) this.rightBlock.firstChild.innerHTML = (!this.dual && this.rightWidth >= this.width / 2) ? "" : this.rightValue;
    if(!this.dual) {
      var x = this.rightBlock.firstChild.offsetWidth;
      this.rightBlock.firstChild.style.left = (this.widthRem * (1 - 2 * (this.rightWidth - this.widthRem) / this.width) - ((this.rightWidth - this.widthRem) * x / this.width)) + 'px';
    }
  },
  moveHandler : function(evt) {
    this.itWasMove = true;
    evt = evt || window.event;
    if (evt.preventDefault) evt.preventDefault();
    evt.returnValue = false;
    if (this.moveState == "left") {
      this.leftWidth = this.blockX0 + this.defPosition(evt).x - this.x0;
      this.leftCounter();
    }
    if (this.moveState == "right") {
      this.rightWidth = this.blockX0 + this.x0 - this.defPosition(evt).x;
      this.rightCounter();
    }
    this.setCurrentState();
    this.onMove();
  },
  moveIntervalHandler : function(evt) {
    this.itWasMove = true;
    evt = evt || window.event;
    if (evt.preventDefault) evt.preventDefault();
    evt.returnValue = false;
    var dX = this.defPosition(evt).x - this.x0;
    if (dX > 0) {
      this.rightWidth = this.rightX0 - dX > this.widthRem ? this.rightX0 - dX : this.widthRem;
      this.leftWidth = this.width - this.rightWidth - this.intervalWidth;
    } else {
      this.leftWidth = this.leftX0 + dX > this.widthRem ? this.leftX0 + dX : this.widthRem;
      this.rightWidth = this.width - this.leftWidth - this.intervalWidth;
    }
    this.rightCounter();
    this.leftCounter();
    this.setCurrentState();
    this.onMove();
  },
  updateRightValue : function(rightValue) {
    try {
      this.rightValue = parseInt(rightValue);
      this.rightValue = this.rightValue < this.leftLimit ? this.leftLimit : this.rightValue;
      this.rightValue = this.rightValue > this.rightLimit ? this.rightLimit : this.rightValue;
      if (this.dual) {
        this.rightValue = this.rightValue < this.leftValue ? this.leftValue : this.rightValue;
      } else this.leftValue = this.rightValue;
      this.rightWidth = this.valueWidth - parseInt((this.rightValue - this.leftLimit) / this.valueInterval * this.valueWidth) + this.widthRem;
      this.rightWidth = isNaN(this.rightWidth) ? this.widthRem : this.rightWidth;
      if (!this.dual) this.leftWidth = this.width - this.rightWidth;
      this.setCurrentState();
    } catch(e) {}
  },
  rightCounter : function() {
    if (this.dual) {
      this.rightWidth = this.rightWidth > this.width - this.leftWidth ? this.width - this.leftWidth : this.rightWidth;
      this.rightWidth = this.rightWidth < this.widthRem ? this.widthRem : this.rightWidth;
      this.rightValue = this.leftLimit + this.valueInterval - parseInt((this.rightWidth - this.widthRem) / this.valueWidth * this.valueInterval);
      if (this.roundUp) this.rightValue = parseInt(this.rightValue / this.roundUp) * this.roundUp;
      if (this.leftWidth + this.rightWidth >= this.width) this.rightValue = this.leftValue;
    } else {
      this.rightWidth = this.rightWidth > (this.width - this.widthRem) ? this.width - this.widthRem : this.rightWidth;
      this.rightWidth = this.rightWidth < this.widthRem ? this.widthRem : this.rightWidth;
      this.leftWidth = this.width - this.rightWidth;
      this.rightValue = this.leftLimit + this.valueInterval - parseInt((this.rightWidth - this.widthRem) / this.valueWidth * this.valueInterval);
      if (this.roundUp) this.rightValue = parseInt(this.rightValue / this.roundUp) * this.roundUp;
      this.leftValue = this.rightValue;
    }
  },
  updateLeftValue : function(leftValue) {
    try {
      this.leftValue = parseInt(leftValue);
      this.leftValue = this.leftValue < this.leftLimit ? this.leftLimit : this.leftValue;
      this.leftValue = this.leftValue > this.rightLimit ? this.rightLimit : this.leftValue;
      if (this.dual) {
        this.leftValue = this.rightValue < this.leftValue ? this.rightValue : this.leftValue;
      } else this.rightValue = this.leftValue;
      this.leftWidth = parseInt((this.leftValue - this.leftLimit) / this.valueInterval * this.valueWidth) + this.widthRem;
      this.leftWidth = isNaN(this.leftWidth) ? this.widthRem : this.leftWidth;
      if (!this.dual) this.rightWidth = this.width - this.leftWidth;
      this.setCurrentState();
    } catch(e) {}
  },
  leftCounter : function() {
    if (this.dual) {
      this.leftWidth = this.leftWidth > this.width - this.rightWidth ? this.width - this.rightWidth : this.leftWidth;
      this.leftWidth = this.leftWidth < this.widthRem ? this.widthRem : this.leftWidth;
      this.leftValue = this.leftLimit + parseInt((this.leftWidth - this.widthRem) / this.valueWidth * this.valueInterval);
      if (this.roundUp) this.leftValue = parseInt(this.leftValue / this.roundUp) * this.roundUp;
      if (this.leftWidth + this.rightWidth >= this.width) this.leftValue = this.rightValue;
    } else {
      this.leftWidth = this.leftWidth > (this.width - this.widthRem) ? this.width - this.widthRem : this.leftWidth;
      this.leftWidth = this.leftWidth < this.widthRem ? this.widthRem : this.leftWidth;
      this.rightWidth = this.width - this.leftWidth;
      this.leftValue = this.leftLimit + parseInt((this.leftWidth - this.widthRem) / this.valueWidth * this.valueInterval);
      if (this.roundUp) this.leftValue = parseInt(this.leftValue / this.roundUp) * this.roundUp;
      this.rightValue = this.leftValue;
    }
  }
}