/***************************************************************
 *  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 = 10;
    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="/i/imgtrackbar/b_l.gif" width="11" height="24" 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="/i/imgtrackbar/b_r.gif" width="11" height="24" 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 = 0; i <= this.bigTicks+1; 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;
        }
    }
}