define([],function() {
    /**************************************************
     * dom-drag.js
     * 09.25.2001
     * www.youngpup.net
     **************************************************
     * 10.28.2001 - fixed minor bug where events
     * sometimes fired off the handle, not the root.
     **************************************************/

    var Drag = {

        obj : null,

        gradx : null,

        init : function(o, oRoot, minX, maxX, minY, maxY, bSwapHorzRef, bSwapVertRef, fXMapper, fYMapper)
        {
            o.onmousedown	= Drag.start;

            o.hmode			= bSwapHorzRef ? false : true ;
            o.vmode			= bSwapVertRef ? false : true ;

            o.root = oRoot && oRoot != null ? oRoot : o ;

            if (o.hmode  && isNaN(parseInt(o.root.style.left  ))) o.root.style.left   = "0px";
           //if (o.vmode  && isNaN(parseInt(o.root.style.top   ))) o.root.style.top    = "0px";
            if (!o.hmode && isNaN(parseInt(o.root.style.right ))) o.root.style.right  = "0px";
           // if (!o.vmode && isNaN(parseInt(o.root.style.bottom))) o.root.style.bottom = "0px";

            o.minX	= typeof minX != 'undefined' ? minX : null;
            o.minY	= typeof minY != 'undefined' ? minY : null;
            o.maxX	= typeof maxX != 'undefined' ? maxX : null;
            o.maxY	= typeof maxY != 'undefined' ? maxY : null;

            o.xMapper = fXMapper ? fXMapper : null;
            o.yMapper = fYMapper ? fYMapper : null;

            o.root.onDragStart	= new Function();
            o.root.onDragEnd	= new Function();
            o.root.onDrag		= new Function();
        },

        start : function(e)
        {
            Drag.gradx.current_slider_id = "#"+this.id;

            var o = Drag.obj = this;
            e = Drag.fixE(e);
            var y = parseInt(o.vmode ? o.root.style.top  : o.root.style.bottom);
            var x = parseInt(o.hmode ? o.root.style.left : o.root.style.right );
            o.root.onDragStart(x, y);

            o.lastMouseX	= e.clientX;
            o.lastMouseY	= e.clientY;

            if (o.hmode) {
                if (o.minX != null)	o.minMouseX	= e.clientX - x + o.minX;
                if (o.maxX != null)	o.maxMouseX	= o.minMouseX + o.maxX - o.minX;
            } else {
                if (o.minX != null) o.maxMouseX = -o.minX + e.clientX + x;
                if (o.maxX != null) o.minMouseX = -o.maxX + e.clientX + x;
            }

            if (o.vmode) {
                if (o.minY != null)	o.minMouseY	= e.clientY - y + o.minY;
                if (o.maxY != null)	o.maxMouseY	= o.minMouseY + o.maxY - o.minY;
            }
            else {
                if (o.minY != null) o.maxMouseY = -o.minY + e.clientY + y;
                if (o.maxY != null) o.minMouseY = -o.maxY + e.clientY + y;
            }

            document.onmousemove	= Drag.drag;
            document.onmouseup	= Drag.end;

            return false;
        },

        drag : function(e)
        {
            e = Drag.fixE(e);
            var o = Drag.obj;

            Drag.gradx.update_style_array();
            Drag.gradx.apply_style(Drag.gradx.panel, Drag.gradx.get_style_value());
            var left = Drag.gradx.gx("#"+o.id).css("left");


            if(parseInt(left) > 60 && parseInt(left) < 390) {
                Drag.gradx.gx("#gradx_slider_info") //info element cached before
                .css("left",left)
                .show();
                         
            }/*else {
                if(parseInt(left) > 120) {
                    left = "272px";
                }else{
                    left = "120px";
                }
                    
                gradx.gx("#gradx_slider_info") //info element cached before
                .css("left",left)
                .show();
                     
            }*/
             var color = Drag.gradx.gx("#"+o.id).css("backgroundColor");
            //but what happens if @color is not in RGB ? :(
            var rgb = Drag.gradx.get_rgb_obj(color);
            Drag.gradx.cp.colorer().set(rgb);


            var ey	= e.clientY;
            var ex	= e.clientX;
            var y = parseInt(o.vmode ? o.root.style.top  : o.root.style.bottom);
            var x = parseInt(o.hmode ? o.root.style.left : o.root.style.right );
            var nx, ny;

            if (o.minX != null) ex = o.hmode ? Math.max(ex, o.minMouseX) : Math.min(ex, o.maxMouseX);
            if (o.maxX != null) ex = o.hmode ? Math.min(ex, o.maxMouseX) : Math.max(ex, o.minMouseX);
            if (o.minY != null) ey = o.vmode ? Math.max(ey, o.minMouseY) : Math.min(ey, o.maxMouseY);
            if (o.maxY != null) ey = o.vmode ? Math.min(ey, o.maxMouseY) : Math.max(ey, o.minMouseY);

            nx = x + ((ex - o.lastMouseX) * (o.hmode ? 1 : -1));
            ny = y + ((ey - o.lastMouseY) * (o.vmode ? 1 : -1));

            if (o.xMapper)		nx = o.xMapper(y)
            else if (o.yMapper)	ny = o.yMapper(x)

            Drag.obj.root.style[o.hmode ? "left" : "right"] = nx + "px";
            //Drag.obj.root.style[o.vmode ? "top" : "bottom"] = ny + "px";
            Drag.obj.lastMouseX	= ex;
            Drag.obj.lastMouseY	= ey;

            Drag.obj.root.onDrag(nx, ny);
            return false;
        },

        end : function()
        {
            document.onmousemove = null;
            document.onmouseup   = null;
            Drag.obj.root.onDragEnd(	parseInt(Drag.obj.root.style[Drag.obj.hmode ? "left" : "right"]), 
                parseInt(Drag.obj.root.style[Drag.obj.vmode ? "top" : "bottom"]));
            Drag.obj = null;
        },

        fixE : function(e)
        {
            if (typeof e == 'undefined') e = window.event;
            if (typeof e.layerX == 'undefined') e.layerX = e.offsetX;
            if (typeof e.layerY == 'undefined') e.layerY = e.offsetY;
            return e;
        }
    };

    return Drag;
});