Proyectos de Subversion Moodle

YUI.add('graphics-svg', function (Y, NAME) {

var IMPLEMENTATION = "svg",
    SHAPE = "shape",
        SPLITPATHPATTERN = /[a-z][^a-z]*/ig,
    SPLITARGSPATTERN = /[\-]?[0-9]*[0-9|\.][0-9]*/g,
    Y_LANG = Y.Lang,
        AttributeLite = Y.AttributeLite,
        SVGGraphic,
    SVGShape,
        SVGCircle,
        SVGRect,
        SVGPath,
        SVGEllipse,
    SVGPieSlice,
    DOCUMENT = Y.config.doc,
    _getClassName = Y.ClassNameManager.getClassName;

function SVGDrawing(){}

/**
 * <a href="http://www.w3.org/TR/SVG/">SVG</a> implementation of the <a href="Drawing.html">`Drawing`</a> class.
 * `SVGDrawing` is not intended to be used directly. Instead, use the <a href="Drawing.html">`Drawing`</a> class.
 * If the browser has <a href="http://www.w3.org/TR/SVG/">SVG</a> capabilities, the <a href="Drawing.html">`Drawing`</a>
 * class will point to the `SVGDrawing` class.
 *
 * @module graphics
 * @class SVGDrawing
 * @constructor
 */
SVGDrawing.prototype = {
    /**
     * Rounds a value to the nearest hundredth.
     *
     * @method _round
     * @param {Number} val Value to be rounded.
     * @return Number
     * @private
     */
    _round: function(val) {
        return Math.round(val * 100)/100;
    },

    /**
     * Maps path to methods
     *
     * @property _pathSymbolToMethod
     * @type Object
     * @private
     */
    _pathSymbolToMethod: {
        M: "moveTo",
        m: "relativeMoveTo",
        L: "lineTo",
        l: "relativeLineTo",
        C: "curveTo",
        c: "relativeCurveTo",
        Q: "quadraticCurveTo",
        q: "relativeQuadraticCurveTo",
        z: "closePath",
        Z: "closePath"
    },

    /**
     * Current x position of the drawing.
     *
     * @property _currentX
     * @type Number
     * @private
     */
    _currentX: 0,

    /**
     * Current y position of the drqwing.
     *
     * @property _currentY
     * @type Number
     * @private
     */
    _currentY: 0,

    /**
     * Indicates the type of shape
     *
     * @private
     * @property _type
     * @readOnly
     * @type String
     */
    _type: "path",

    /**
     * Draws a bezier curve.
     *
     * @method curveTo
     * @param {Number} cp1x x-coordinate for the first control point.
     * @param {Number} cp1y y-coordinate for the first control point.
     * @param {Number} cp2x x-coordinate for the second control point.
     * @param {Number} cp2y y-coordinate for the second control point.
     * @param {Number} x x-coordinate for the end point.
     * @param {Number} y y-coordinate for the end point.
     * @chainable
     */
    curveTo: function() {
        this._curveTo.apply(this, [Y.Array(arguments), false]);
        return this;
    },

    /**
     * Draws a bezier curve relative to the current coordinates.
     *
     * @method relativeCurveTo
     * @param {Number} cp1x x-coordinate for the first control point.
     * @param {Number} cp1y y-coordinate for the first control point.
     * @param {Number} cp2x x-coordinate for the second control point.
     * @param {Number} cp2y y-coordinate for the second control point.
     * @param {Number} x x-coordinate for the end point.
     * @param {Number} y y-coordinate for the end point.
     * @chainable
     */
    relativeCurveTo: function() {
        this._curveTo.apply(this, [Y.Array(arguments), true]);
        return this;
    },

    /**
     * Implements curveTo methods.
     *
     * @method _curveTo
     * @param {Array} args The arguments to be used.
     * @param {Boolean} relative Indicates whether or not to use relative coordinates.
     * @private
     */
    _curveTo: function(args, relative) {
        var w,
            h,
            pts,
            cp1x,
            cp1y,
            cp2x,
            cp2y,
            x,
            y,
            right,
            left,
            bottom,
            top,
            i,
            len,
            pathArrayLen,
            currentArray,
            command = relative ? "c" : "C",
            relativeX = relative ? parseFloat(this._currentX) : 0,
            relativeY = relative ? parseFloat(this._currentY) : 0;
        this._pathArray = this._pathArray || [];
        if(this._pathType !== command)
        {
            this._pathType = command;
            currentArray = [command];
            this._pathArray.push(currentArray);
        }
        else
        {
            currentArray = this._pathArray[Math.max(0, this._pathArray.length - 1)];
            if(!currentArray)
            {
                currentArray = [];
                this._pathArray.push(currentArray);
            }
        }
        pathArrayLen = this._pathArray.length - 1;
        this._pathArray[pathArrayLen] = this._pathArray[pathArrayLen].concat(args);
        len = args.length - 5;
        for(i = 0; i < len; i = i + 6)
        {
            cp1x = parseFloat(args[i]) + relativeX;
            cp1y = parseFloat(args[i + 1]) + relativeY;
            cp2x = parseFloat(args[i + 2]) + relativeX;
            cp2y = parseFloat(args[i + 3]) + relativeY;
            x = parseFloat(args[i + 4]) + relativeX;
            y = parseFloat(args[i + 5]) + relativeY;
            right = Math.max(x, Math.max(cp1x, cp2x));
            bottom = Math.max(y, Math.max(cp1y, cp2y));
            left = Math.min(x, Math.min(cp1x, cp2x));
            top = Math.min(y, Math.min(cp1y, cp2y));
            w = Math.abs(right - left);
            h = Math.abs(bottom - top);
            pts = [[this._currentX, this._currentY] , [cp1x, cp1y], [cp2x, cp2y], [x, y]];
            this._setCurveBoundingBox(pts, w, h);
            this._currentX = x;
            this._currentY = y;
        }
    },

    /**
     * Draws a quadratic bezier curve.
     *
     * @method quadraticCurveTo
     * @param {Number} cpx x-coordinate for the control point.
     * @param {Number} cpy y-coordinate for the control point.
     * @param {Number} x x-coordinate for the end point.
     * @param {Number} y y-coordinate for the end point.
     * @chainable
     */
    quadraticCurveTo: function() {
        this._quadraticCurveTo.apply(this, [Y.Array(arguments), false]);
        return this;
    },

    /**
     * Draws a quadratic bezier curve relative to the current position.
     *
     * @method quadraticCurveTo
     * @param {Number} cpx x-coordinate for the control point.
     * @param {Number} cpy y-coordinate for the control point.
     * @param {Number} x x-coordinate for the end point.
     * @param {Number} y y-coordinate for the end point.
     * @chainable
     */
    relativeQuadraticCurveTo: function() {
        this._quadraticCurveTo.apply(this, [Y.Array(arguments), true]);
        return this;
    },

    /**
     * Implements quadraticCurveTo methods.
     *
     * @method _quadraticCurveTo
     * @param {Array} args The arguments to be used.
     * @param {Boolean} relative Indicates whether or not to use relative coordinates.
     * @private
     */
    _quadraticCurveTo: function(args, relative) {
        var cpx,
            cpy,
            x,
            y,
            pathArrayLen,
            currentArray,
            w,
            h,
            pts,
            right,
            left,
            bottom,
            top,
            i,
            len,
            command = relative ? "q" : "Q",
            relativeX = relative ? parseFloat(this._currentX) : 0,
            relativeY = relative ? parseFloat(this._currentY) : 0;
        this._pathArray = this._pathArray || [];
        if(this._pathType !== command)
        {
            this._pathType = command;
            currentArray = [command];
            this._pathArray.push(currentArray);
        }
        else
        {
            currentArray = this._pathArray[Math.max(0, this._pathArray.length - 1)];
            if(!currentArray)
            {
                currentArray = [];
                this._pathArray.push(currentArray);
            }
        }
        pathArrayLen = this._pathArray.length - 1;
        this._pathArray[pathArrayLen] = this._pathArray[pathArrayLen].concat(args);
        len = args.length - 3;
        for(i = 0; i < len; i = i + 4)
        {
            cpx = parseFloat(args[i]) + relativeX;
            cpy = parseFloat(args[i + 1]) + relativeY;
            x = parseFloat(args[i + 2]) + relativeX;
            y = parseFloat(args[i + 3]) + relativeY;
            right = Math.max(x, cpx);
            bottom = Math.max(y, cpy);
            left = Math.min(x, cpx);
            top = Math.min(y, cpy);
            w = Math.abs(right - left);
            h = Math.abs(bottom - top);
            pts = [[this._currentX, this._currentY] , [cpx, cpy], [x, y]];
            this._setCurveBoundingBox(pts, w, h);
            this._currentX = x;
            this._currentY = y;
        }
    },

    /**
     * Draws a rectangle.
     *
     * @method drawRect
     * @param {Number} x x-coordinate
     * @param {Number} y y-coordinate
     * @param {Number} w width
     * @param {Number} h height
     * @chainable
     */
    drawRect: function(x, y, w, h) {
        this.moveTo(x, y);
        this.lineTo(x + w, y);
        this.lineTo(x + w, y + h);
        this.lineTo(x, y + h);
        this.lineTo(x, y);
        return this;
    },

    /**
     * Draws a rectangle with rounded corners.
     *
     * @method drawRoundRect
     * @param {Number} x x-coordinate
     * @param {Number} y y-coordinate
     * @param {Number} w width
     * @param {Number} h height
     * @param {Number} ew width of the ellipse used to draw the rounded corners
     * @param {Number} eh height of the ellipse used to draw the rounded corners
     * @chainable
     */
    drawRoundRect: function(x, y, w, h, ew, eh) {
        this.moveTo(x, y + eh);
        this.lineTo(x, y + h - eh);
        this.quadraticCurveTo(x, y + h, x + ew, y + h);
        this.lineTo(x + w - ew, y + h);
        this.quadraticCurveTo(x + w, y + h, x + w, y + h - eh);
        this.lineTo(x + w, y + eh);
        this.quadraticCurveTo(x + w, y, x + w - ew, y);
        this.lineTo(x + ew, y);
        this.quadraticCurveTo(x, y, x, y + eh);
        return this;
        },

    /**
     * Draws a circle.
     *
     * @method drawCircle
     * @param {Number} x y-coordinate
     * @param {Number} y x-coordinate
     * @param {Number} r radius
     * @chainable
     * @protected
     */
        drawCircle: function(x, y, radius) {
        var circum = radius * 2;
        this._drawingComplete = false;
        this._trackSize(x, y);
        this._trackSize(x + circum, y + circum);
        this._pathArray = this._pathArray || [];
        this._pathArray.push(["M", x + radius, y]);
        this._pathArray.push(["A",  radius, radius, 0, 1, 0, x + radius, y + circum]);
        this._pathArray.push(["A",  radius, radius, 0, 1, 0, x + radius, y]);
        this._currentX = x;
        this._currentY = y;
        return this;
    },

    /**
     * Draws an ellipse.
     *
     * @method drawEllipse
     * @param {Number} x x-coordinate
     * @param {Number} y y-coordinate
     * @param {Number} w width
     * @param {Number} h height
     * @chainable
     * @protected
     */
        drawEllipse: function(x, y, w, h) {
        var radius = w * 0.5,
            yRadius = h * 0.5;
        this._drawingComplete = false;
        this._trackSize(x, y);
        this._trackSize(x + w, y + h);
        this._pathArray = this._pathArray || [];
        this._pathArray.push(["M", x + radius, y]);
        this._pathArray.push(["A",  radius, yRadius, 0, 1, 0, x + radius, y + h]);
        this._pathArray.push(["A",  radius, yRadius, 0, 1, 0, x + radius, y]);
        this._currentX = x;
        this._currentY = y;
        return this;
    },

    /**
     * Draws a diamond.
     *
     * @method drawDiamond
     * @param {Number} x y-coordinate
     * @param {Number} y x-coordinate
     * @param {Number} width width
     * @param {Number} height height
     * @chainable
     * @protected
     */
    drawDiamond: function(x, y, width, height)
    {
        var midWidth = width * 0.5,
            midHeight = height * 0.5;
        this.moveTo(x + midWidth, y);
        this.lineTo(x + width, y + midHeight);
        this.lineTo(x + midWidth, y + height);
        this.lineTo(x, y + midHeight);
        this.lineTo(x + midWidth, y);
        return this;
    },

    /**
     * Draws a wedge.
     *
     * @method drawWedge
     * @param {Number} x x-coordinate of the wedge's center point
     * @param {Number} y y-coordinate of the wedge's center point
     * @param {Number} startAngle starting angle in degrees
     * @param {Number} arc sweep of the wedge. Negative values draw clockwise.
     * @param {Number} radius radius of wedge. If [optional] yRadius is defined, then radius is the x radius.
     * @param {Number} yRadius [optional] y radius for wedge.
     * @chainable
     * @private
     */
    drawWedge: function(x, y, startAngle, arc, radius, yRadius)
    {
        var segs,
            segAngle,
            theta,
            angle,
            angleMid,
            ax,
            ay,
            bx,
            by,
            cx,
            cy,
            i,
            diameter = radius * 2,
            currentArray,
            pathArrayLen;
        this._pathArray = this._pathArray || [];
        yRadius = yRadius || radius;
        if(this._pathType !== "M")
        {
            this._pathType = "M";
            currentArray = ["M"];
            this._pathArray.push(currentArray);
        }
        else
        {
            currentArray = this._getCurrentArray();
        }
        pathArrayLen = this._pathArray.length - 1;
        this._pathArray[pathArrayLen].push(x);
        this._pathArray[pathArrayLen].push(x);

        // limit sweep to reasonable numbers
        if(Math.abs(arc) > 360)
        {
            arc = 360;
        }

        // First we calculate how many segments are needed
        // for a smooth arc.
        segs = Math.ceil(Math.abs(arc) / 45);

        // Now calculate the sweep of each segment.
        segAngle = arc / segs;

        // The math requires radians rather than degrees. To convert from degrees
        // use the formula (degrees/180)*Math.PI to get radians.
        theta = -(segAngle / 180) * Math.PI;

        // convert angle startAngle to radians
        angle = (startAngle / 180) * Math.PI;
        if(segs > 0)
        {
            // draw a line from the center to the start of the curve
            ax = x + Math.cos(startAngle / 180 * Math.PI) * radius;
            ay = y + Math.sin(startAngle / 180 * Math.PI) * yRadius;
            this._pathType = "L";
            pathArrayLen++;
            this._pathArray[pathArrayLen] = ["L"];
            this._pathArray[pathArrayLen].push(this._round(ax));
            this._pathArray[pathArrayLen].push(this._round(ay));
            pathArrayLen++;
            this._pathType = "Q";
            this._pathArray[pathArrayLen] = ["Q"];
            for(i = 0; i < segs; ++i)
            {
                angle += theta;
                angleMid = angle - (theta / 2);
                bx = x + Math.cos(angle) * radius;
                by = y + Math.sin(angle) * yRadius;
                cx = x + Math.cos(angleMid) * (radius / Math.cos(theta / 2));
                cy = y + Math.sin(angleMid) * (yRadius / Math.cos(theta / 2));
                this._pathArray[pathArrayLen].push(this._round(cx));
                this._pathArray[pathArrayLen].push(this._round(cy));
                this._pathArray[pathArrayLen].push(this._round(bx));
                this._pathArray[pathArrayLen].push(this._round(by));
            }
        }
        this._currentX = x;
        this._currentY = y;
        this._trackSize(diameter, diameter);
        return this;
    },

    /**
     * Draws a line segment using the current line style from the current drawing position to the specified x and y coordinates.
     *
     * @method lineTo
     * @param {Number} point1 x-coordinate for the end point.
     * @param {Number} point2 y-coordinate for the end point.
     * @chainable
     */
    lineTo: function()
    {
        this._lineTo.apply(this, [Y.Array(arguments), false]);
        return this;
    },

    /**
     * Draws a line segment using the current line style from the current drawing position to the relative x and y coordinates.
     *
     * @method relativeLineTo
     * @param {Number} point1 x-coordinate for the end point.
     * @param {Number} point2 y-coordinate for the end point.
     * @chainable
     */
    relativeLineTo: function()
    {
        this._lineTo.apply(this, [Y.Array(arguments), true]);
        return this;
    },

    /**
     * Implements lineTo methods.
     *
     * @method _lineTo
     * @param {Array} args The arguments to be used.
     * @param {Boolean} relative Indicates whether or not to use relative coordinates.
     * @private
     */
    _lineTo: function(args, relative) {
        var point1 = args[0],
            i,
            len,
            pathArrayLen,
            currentArray,
            x,
            y,
            command = relative ? "l" : "L",
            relativeX = relative ? parseFloat(this._currentX) : 0,
            relativeY = relative ? parseFloat(this._currentY) : 0;
        this._pathArray = this._pathArray || [];
        this._shapeType = "path";
        len = args.length;
        if(this._pathType !== command)
        {
            this._pathType = command;
            currentArray = [command];
            this._pathArray.push(currentArray);
        }
        else
        {
            currentArray = this._getCurrentArray();
        }
        pathArrayLen = this._pathArray.length - 1;
        if (typeof point1 === 'string' || typeof point1 === 'number') {
            for (i = 0; i < len; i = i + 2) {
                x = parseFloat(args[i]);
                y = parseFloat(args[i + 1]);
                this._pathArray[pathArrayLen].push(x);
                this._pathArray[pathArrayLen].push(y);
                x = x + relativeX;
                y = y + relativeY;
                this._currentX = x;
                this._currentY = y;
                this._trackSize.apply(this, [x, y]);
            }
        }
        else
        {
            for (i = 0; i < len; ++i) {
                x = parseFloat(args[i][0]);
                y = parseFloat(args[i][1]);
                this._pathArray[pathArrayLen].push(x);
                this._pathArray[pathArrayLen].push(y);
                this._currentX = x;
                this._currentY = y;
                x = x + relativeX;
                y = y + relativeY;
                this._trackSize.apply(this, [x, y]);
            }
        }
    },

    /**
     * Moves the current drawing position to specified x and y coordinates.
     *
     * @method moveTo
     * @param {Number} x x-coordinate for the end point.
     * @param {Number} y y-coordinate for the end point.
     * @chainable
     */
    moveTo: function()
    {
        this._moveTo.apply(this, [Y.Array(arguments), false]);
        return this;
    },

    /**
     * Moves the current drawing position relative to specified x and y coordinates.
     *
     * @method relativeMoveTo
     * @param {Number} x x-coordinate for the end point.
     * @param {Number} y y-coordinate for the end point.
     * @chainable
     */
    relativeMoveTo: function()
    {
        this._moveTo.apply(this, [Y.Array(arguments), true]);
        return this;
    },

    /**
     * Implements moveTo methods.
     *
     * @method _moveTo
     * @param {Array} args The arguments to be used.
     * @param {Boolean} relative Indicates whether or not to use relative coordinates.
     * @private
     */
    _moveTo: function(args, relative) {
        var pathArrayLen,
            currentArray,
            x = parseFloat(args[0]),
            y = parseFloat(args[1]),
            command = relative ? "m" : "M",
            relativeX = relative ? parseFloat(this._currentX) : 0,
            relativeY = relative ? parseFloat(this._currentY) : 0;
        this._pathArray = this._pathArray || [];
        this._pathType = command;
        currentArray = [command];
        this._pathArray.push(currentArray);
        pathArrayLen = this._pathArray.length - 1;
        this._pathArray[pathArrayLen] = this._pathArray[pathArrayLen].concat([x, y]);
        x = x + relativeX;
        y = y + relativeY;
        this._currentX = x;
        this._currentY = y;
        this._trackSize(x, y);
    },

    /**
     * Completes a drawing operation.
     *
     * @method end
     * @chainable
     */
    end: function()
    {
        this._closePath();
        return this;
    },

    /**
     * Clears the path.
     *
     * @method clear
     * @chainable
     */
    clear: function()
    {
        this._currentX = 0;
        this._currentY = 0;
        this._width = 0;
        this._height = 0;
        this._left = 0;
        this._right = 0;
        this._top = 0;
        this._bottom = 0;
        this._pathArray = [];
        this._path = "";
        this._pathType = "";
        return this;
    },

    /**
     * Draws the path.
     *
     * @method _closePath
     * @private
     */
    _closePath: function()
    {
        var pathArray,
            segmentArray,
            pathType,
            len,
            val,
            i,
            path = "",
            node = this.node,
            left = parseFloat(this._left),
            top = parseFloat(this._top),
            fill = this.get("fill");
        if(this._pathArray)
        {
            pathArray = this._pathArray.concat();
            while(pathArray && pathArray.length > 0)
            {
                segmentArray = pathArray.shift();
                len = segmentArray.length;
                pathType = segmentArray[0];
                if(pathType === "A")
                {
                    path += pathType + segmentArray[1] + "," + segmentArray[2];
                }
                else if(pathType === "z" || pathType === "Z")
                {
                    path += " z ";
                }
                else if(pathType === "C" || pathType === "c")
                {
                    path += pathType + (segmentArray[1] - left)+ "," + (segmentArray[2] - top);
                }
                else
                {
                    path += " " + pathType + parseFloat(segmentArray[1] - left);
                }
                switch(pathType)
                {
                    case "L" :
                    case "l" :
                    case "M" :
                    case "m" :
                    case "Q" :
                    case "q" :
                        for(i = 2; i < len; ++i)
                        {
                            val = (i % 2 === 0) ? top : left;
                            val = segmentArray[i] - val;
                            path += ", " + parseFloat(val);
                        }
                    break;
                    case "A" :
                        val = " " + parseFloat(segmentArray[3]) + " " + parseFloat(segmentArray[4]);
                        val += "," + parseFloat(segmentArray[5]) + " " + parseFloat(segmentArray[6] - left);
                        val += "," + parseFloat(segmentArray[7] - top);
                        path += " " + val;
                    break;
                    case "C" :
                    case "c" :
                        for(i = 3; i < len - 1; i = i + 2)
                        {
                            val = parseFloat(segmentArray[i] - left);
                            val = val + ", ";
                            val = val + parseFloat(segmentArray[i + 1] - top);
                            path += " " + val;
                        }
                    break;
                }
            }
            if(fill && fill.color)
            {
                path += 'z';
            }
            Y.Lang.trim(path);
            if(path)
            {
                node.setAttribute("d", path);
            }

            this._path = path;
            this._fillChangeHandler();
            this._strokeChangeHandler();
            this._updateTransform();
        }
    },

    /**
     * Ends a fill and stroke
     *
     * @method closePath
     * @chainable
     */
    closePath: function()
    {
        this._pathArray.push(["z"]);
        return this;
    },

    /**
     * Returns the current array of drawing commands.
     *
     * @method _getCurrentArray
     * @return Array
     * @private
     */
    _getCurrentArray: function()
    {
        var currentArray = this._pathArray[Math.max(0, this._pathArray.length - 1)];
        if(!currentArray)
        {
            currentArray = [];
            this._pathArray.push(currentArray);
        }
        return currentArray;
    },

    /**
     * Returns the points on a curve
     *
     * @method getBezierData
     * @param Array points Array containing the begin, end and control points of a curve.
     * @param Number t The value for incrementing the next set of points.
     * @return Array
     * @private
     */
    getBezierData: function(points, t) {
        var n = points.length,
            tmp = [],
            i,
            j;

        for (i = 0; i < n; ++i){
            tmp[i] = [points[i][0], points[i][1]]; // save input
        }

        for (j = 1; j < n; ++j) {
            for (i = 0; i < n - j; ++i) {
                tmp[i][0] = (1 - t) * tmp[i][0] + t * tmp[parseInt(i + 1, 10)][0];
                tmp[i][1] = (1 - t) * tmp[i][1] + t * tmp[parseInt(i + 1, 10)][1];
            }
        }
        return [ tmp[0][0], tmp[0][1] ];
    },

    /**
     * Calculates the bounding box for a curve
     *
     * @method _setCurveBoundingBox
     * @param Array pts Array containing points for start, end and control points of a curve.
     * @param Number w Width used to calculate the number of points to describe the curve.
     * @param Number h Height used to calculate the number of points to describe the curve.
     * @private
     */
    _setCurveBoundingBox: function(pts, w, h)
    {
        var i,
            left = this._currentX,
            right = left,
            top = this._currentY,
            bottom = top,
            len = Math.round(Math.sqrt((w * w) + (h * h))),
            t = 1/len,
            xy;
        for(i = 0; i < len; ++i)
        {
            xy = this.getBezierData(pts, t * i);
            left = isNaN(left) ? xy[0] : Math.min(xy[0], left);
            right = isNaN(right) ? xy[0] : Math.max(xy[0], right);
            top = isNaN(top) ? xy[1] : Math.min(xy[1], top);
            bottom = isNaN(bottom) ? xy[1] : Math.max(xy[1], bottom);
        }
        left = Math.round(left * 10)/10;
        right = Math.round(right * 10)/10;
        top = Math.round(top * 10)/10;
        bottom = Math.round(bottom * 10)/10;
        this._trackSize(right, bottom);
        this._trackSize(left, top);
    },

    /**
     * Updates the size of the graphics object
     *
     * @method _trackSize
     * @param {Number} w width
     * @param {Number} h height
     * @private
     */
    _trackSize: function(w, h) {
        if (w > this._right) {
            this._right = w;
        }
        if(w < this._left)
        {
            this._left = w;
        }
        if (h < this._top)
        {
            this._top = h;
        }
        if (h > this._bottom)
        {
            this._bottom = h;
        }
        this._width = this._right - this._left;
        this._height = this._bottom - this._top;
    }
};
Y.SVGDrawing = SVGDrawing;
/**
 * <a href="http://www.w3.org/TR/SVG/">SVG</a> implementation of the <a href="Shape.html">`Shape`</a> class.
 * `SVGShape` is not intended to be used directly. Instead, use the <a href="Shape.html">`Shape`</a> class.
 * If the browser has <a href="http://www.w3.org/TR/SVG/">SVG</a> capabilities, the <a href="Shape.html">`Shape`</a>
 * class will point to the `SVGShape` class.
 *
 * @module graphics
 * @class SVGShape
 * @constructor
 * @param {Object} cfg (optional) Attribute configs
 */
SVGShape = function()
{
    this._transforms = [];
    this.matrix = new Y.Matrix();
    this._normalizedMatrix = new Y.Matrix();
    SVGShape.superclass.constructor.apply(this, arguments);
};

SVGShape.NAME = "shape";

Y.extend(SVGShape, Y.GraphicBase, Y.mix({
    /**
     * Storage for x attribute.
     *
     * @property _x
     * @protected
     */
    _x: 0,

    /**
     * Storage for y attribute.
     *
     * @property _y
     * @protected
     */
    _y: 0,

    /**
     * Init method, invoked during construction.
     * Calls `initializer` method.
     *
     * @method init
     * @protected
     */
        init: function()
        {
                this.initializer.apply(this, arguments);
        },

        /**
         * Initializes the shape
         *
         * @private
         * @method initializer
         */
        initializer: function(cfg)
        {
                var host = this,
            graphic = cfg.graphic,
            data = this.get("data");
                host.createNode();
                if(graphic)
        {
            host._setGraphic(graphic);
        }
        if(data)
        {
            host._parsePathData(data);
        }
        host._updateHandler();
        },

    /**
     * Set the Graphic instance for the shape.
     *
     * @method _setGraphic
     * @param {Graphic | Node | HTMLElement | String} render This param is used to determine the graphic instance. If it is a
     * `Graphic` instance, it will be assigned to the `graphic` attribute. Otherwise, a new Graphic instance will be created
     * and rendered into the dom element that the render represents.
     * @private
     */
    _setGraphic: function(render)
    {
        var graphic;
        if(render instanceof Y.SVGGraphic)
        {
            this._graphic = render;
        }
        else
        {
            graphic = new Y.SVGGraphic({
                render: render
            });
            graphic._appendShape(this);
            this._graphic = graphic;
        }
    },

        /**
         * Add a class name to each node.
         *
         * @method addClass
         * @param {String} className the class name to add to the node's class attribute
         */
        addClass: function(className)
        {
        var node = this.node;
                node.className.baseVal = Y_LANG.trim([node.className.baseVal, className].join(' '));
        },

        /**
         * Removes a class name from each node.
         *
         * @method removeClass
         * @param {String} className the class name to remove from the node's class attribute
         */
        removeClass: function(className)
        {
                var node = this.node,
                        classString = node.className.baseVal;
                classString = classString.replace(new RegExp(className + ' '), className).replace(new RegExp(className), '');
                node.className.baseVal = classString;
        },

        /**
         * Gets the current position of the node in page coordinates.
         *
         * @method getXY
         * @return Array The XY position of the shape.
         */
        getXY: function()
        {
                var graphic = this._graphic,
                        parentXY = graphic.getXY(),
                        x = this._x,
                        y = this._y;
                return [parentXY[0] + x, parentXY[1] + y];
        },

        /**
         * Set the position of the shape in page coordinates, regardless of how the node is positioned.
         *
         * @method setXY
         * @param {Array} Contains x & y values for new position (coordinates are page-based)
         */
        setXY: function(xy)
        {
                var graphic = this._graphic,
                        parentXY = graphic.getXY();
                this._x = xy[0] - parentXY[0];
                this._y = xy[1] - parentXY[1];
        this.set("transform", this.get("transform"));
        },

        /**
         * Determines whether the node is an ancestor of another HTML element in the DOM hierarchy.
         *
         * @method contains
         * @param {SVGShape | HTMLElement} needle The possible node or descendent
         * @return Boolean Whether or not this shape is the needle or its ancestor.
         */
        contains: function(needle)
        {
                var node = needle instanceof Y.Node ? needle._node : needle;
        return node === this.node;
        },

        /**
         * Compares nodes to determine if they match.
         * Node instances can be compared to each other and/or HTMLElements.
         * @method compareTo
         * @param {HTMLElement | Node} refNode The reference node to compare to the node.
         * @return {Boolean} True if the nodes match, false if they do not.
         */
        compareTo: function(refNode) {
                var node = this.node;

                return node === refNode;
        },

        /**
         * Test if the supplied node matches the supplied selector.
         *
         * @method test
         * @param {String} selector The CSS selector to test against.
         * @return Boolean Wheter or not the shape matches the selector.
         */
        test: function(selector)
        {
                return Y.Selector.test(this.node, selector);
        },

        /**
         * Value function for fill attribute
         *
         * @private
         * @method _getDefaultFill
         * @return Object
         */
        _getDefaultFill: function() {
                return {
                        type: "solid",
                        opacity: 1,
                        cx: 0.5,
                        cy: 0.5,
                        fx: 0.5,
                        fy: 0.5,
                        r: 0.5
                };
        },

        /**
         * Value function for stroke attribute
         *
         * @private
         * @method _getDefaultStroke
         * @return Object
         */
        _getDefaultStroke: function()
        {
                return {
                        weight: 1,
                        dashstyle: "none",
                        color: "#000",
                        opacity: 1.0
                };
        },

        /**
         * Creates the dom node for the shape.
         *
     * @method createNode
         * @return HTMLElement
         * @private
         */
        createNode: function()
        {
                var host = this,
            node = DOCUMENT.createElementNS("http://www.w3.org/2000/svg", "svg:" + this._type),
                        id = host.get("id"),
            name = host.name,
            concat = host._camelCaseConcat,
                        pointerEvents = host.get("pointerEvents");
                host.node = node;
                host.addClass(
            _getClassName(SHAPE) +
            " " +
            _getClassName(concat(IMPLEMENTATION, SHAPE)) +
            " " +
            _getClassName(name) +
            " " +
            _getClassName(concat(IMPLEMENTATION, name))
        );
        if(id)
                {
                        node.setAttribute("id", id);
                }
                if(pointerEvents)
                {
                        node.setAttribute("pointer-events", pointerEvents);
                }
        if(!host.get("visible"))
        {
            Y.DOM.setStyle(node, "visibility", "hidden");
        }
        Y.DOM.setAttribute(this.node, "shape-rendering", this.get("shapeRendering"));
        },


        /**
     * Overrides default `on` method. Checks to see if its a dom interaction event. If so,
     * return an event attached to the `node` element. If not, return the normal functionality.
     *
     * @method on
     * @param {String} type event type
     * @param {Object} callback function
         * @private
         */
        on: function(type, fn)
        {
                if(Y.Node.DOM_EVENTS[type])
                {
            return Y.on(type, fn, "#" + this.get("id"));
                }
                return Y.on.apply(this, arguments);
        },

        /**
         * Adds a stroke to the shape node.
         *
         * @method _strokeChangeHandler
         * @private
         */
        _strokeChangeHandler: function()
        {
                var node = this.node,
                        stroke = this.get("stroke"),
                        strokeOpacity,
                        dashstyle,
                        dash,
                        linejoin;
                if(stroke && stroke.weight && stroke.weight > 0)
                {
                        linejoin = stroke.linejoin || "round";
                        strokeOpacity = parseFloat(stroke.opacity);
                        dashstyle = stroke.dashstyle || "none";
                        dash = Y_LANG.isArray(dashstyle) ? dashstyle.toString() : dashstyle;
                        stroke.color = stroke.color || "#000000";
                        stroke.weight = stroke.weight || 1;
                        stroke.opacity = Y_LANG.isNumber(strokeOpacity) ? strokeOpacity : 1;
                        stroke.linecap = stroke.linecap || "butt";
                        node.setAttribute("stroke-dasharray", dash);
                        node.setAttribute("stroke", stroke.color);
                        node.setAttribute("stroke-linecap", stroke.linecap);
                        node.setAttribute("stroke-width",  stroke.weight);
                        node.setAttribute("stroke-opacity", stroke.opacity);
                        if(linejoin === "round" || linejoin === "bevel")
                        {
                                node.setAttribute("stroke-linejoin", linejoin);
                        }
                        else
                        {
                                linejoin = parseInt(linejoin, 10);
                                if(Y_LANG.isNumber(linejoin))
                                {
                                        node.setAttribute("stroke-miterlimit",  Math.max(linejoin, 1));
                                        node.setAttribute("stroke-linejoin", "miter");
                                }
                        }
                }
                else
                {
                        node.setAttribute("stroke", "none");
                }
        },

        /**
         * Adds a fill to the shape node.
         *
         * @method _fillChangeHandler
         * @private
         */
        _fillChangeHandler: function()
        {
                var node = this.node,
                        fill = this.get("fill"),
                        fillOpacity,
                        type;
                if(fill)
                {
                        type = fill.type;
                        if(type === "linear" || type === "radial")
                        {
                                this._setGradientFill(fill);
                                node.setAttribute("fill", "url(#grad" + this.get("id") + ")");
                        }
                        else if(!fill.color)
                        {
                                node.setAttribute("fill", "none");
                        }
                        else
                        {
                fillOpacity = parseFloat(fill.opacity);
                                fillOpacity = Y_LANG.isNumber(fillOpacity) ? fillOpacity : 1;
                                node.setAttribute("fill", fill.color);
                                node.setAttribute("fill-opacity", fillOpacity);
                        }
                }
                else
                {
                        node.setAttribute("fill", "none");
                }
        },

        /**
         * Creates a gradient fill
         *
         * @method _setGradientFill
         * @param {String} type gradient type
         * @private
         */
        _setGradientFill: function(fill) {
                var offset,
                        opacity,
                        color,
                        stopNode,
            newStop,
                        isNumber = Y_LANG.isNumber,
                        graphic = this._graphic,
                        type = fill.type,
                        gradientNode = graphic.getGradientNode("grad" + this.get("id"), type),
                        stops = fill.stops,
                        w = this.get("width"),
                        h = this.get("height"),
                        rotation = fill.rotation || 0,
                        radCon = Math.PI/180,
            tanRadians = parseFloat(parseFloat(Math.tan(rotation * radCon)).toFixed(8)),
            i,
                        len,
                        def,
                        stop,
                        x1 = "0%",
                        x2 = "100%",
                        y1 = "0%",
                        y2 = "0%",
                        cx = fill.cx,
                        cy = fill.cy,
                        fx = fill.fx,
                        fy = fill.fy,
                        r = fill.r,
            stopNodes = [];
                if(type === "linear")
                {
            cx = w/2;
            cy = h/2;
            if(Math.abs(tanRadians) * w/2 >= h/2)
            {
                if(rotation < 180)
                {
                    y1 = 0;
                    y2 = h;
                }
                else
                {
                    y1 = h;
                    y2 = 0;
                }
                x1 = cx - ((cy - y1)/tanRadians);
                x2 = cx - ((cy - y2)/tanRadians);
            }
            else
            {
                if(rotation > 90 && rotation < 270)
                {
                    x1 = w;
                    x2 = 0;
                }
                else
                {
                    x1 = 0;
                    x2 = w;
                }
                y1 = ((tanRadians * (cx - x1)) - cy) * -1;
                y2 = ((tanRadians * (cx - x2)) - cy) * -1;
            }

            x1 = Math.round(100 * x1/w);
            x2 = Math.round(100 * x2/w);
            y1 = Math.round(100 * y1/h);
            y2 = Math.round(100 * y2/h);

            //Set default value if not valid
            x1 = isNumber(x1) ? x1 : 0;
            x2 = isNumber(x2) ? x2 : 100;
            y1 = isNumber(y1) ? y1 : 0;
            y2 = isNumber(y2) ? y2 : 0;

            gradientNode.setAttribute("spreadMethod", "pad");
                        gradientNode.setAttribute("width", w);
                        gradientNode.setAttribute("height", h);
            gradientNode.setAttribute("x1", x1 + "%");
            gradientNode.setAttribute("x2", x2 + "%");
            gradientNode.setAttribute("y1", y1 + "%");
            gradientNode.setAttribute("y2", y2 + "%");
                }
                else
                {
                        gradientNode.setAttribute("cx", (cx * 100) + "%");
                        gradientNode.setAttribute("cy", (cy * 100) + "%");
                        gradientNode.setAttribute("fx", (fx * 100) + "%");
                        gradientNode.setAttribute("fy", (fy * 100) + "%");
                        gradientNode.setAttribute("r", (r * 100) + "%");
                }

                len = stops.length;
                def = 0;
        for(i = 0; i < len; ++i)
                {
            if(this._stops && this._stops.length > 0)
            {
                stopNode = this._stops.shift();
                newStop = false;
            }
            else
            {
                stopNode = graphic._createGraphicNode("stop");
                newStop = true;
            }
                        stop = stops[i];
                        opacity = stop.opacity;
                        color = stop.color;
                        offset = stop.offset || i/(len - 1);
                        offset = Math.round(offset * 100) + "%";
                        opacity = isNumber(opacity) ? opacity : 1;
                        opacity = Math.max(0, Math.min(1, opacity));
                        def = (i + 1) / len;
                        stopNode.setAttribute("offset", offset);
                        stopNode.setAttribute("stop-color", color);
                        stopNode.setAttribute("stop-opacity", opacity);
                        if(newStop)
            {
                gradientNode.appendChild(stopNode);
            }
            stopNodes.push(stopNode);
                }
        while(this._stops && this._stops.length > 0)
        {
            gradientNode.removeChild(this._stops.shift());
        }
        this._stops = stopNodes;
        },

    _stops: null,

    /**
     * Sets the value of an attribute.
     *
     * @method set
     * @param {String|Object} name The name of the attribute. Alternatively, an object of key value pairs can
     * be passed in to set multiple attributes at once.
     * @param {Any} value The value to set the attribute to. This value is ignored if an object is received as
     * the name param.
     */
        set: function()
        {
                var host = this;
                AttributeLite.prototype.set.apply(host, arguments);
                if(host.initialized)
                {
                        host._updateHandler();
                }
        },

        /**
         * Specifies a 2d translation.
         *
         * @method translate
         * @param {Number} x The value to transate on the x-axis.
         * @param {Number} y The value to translate on the y-axis.
         */
        translate: function()
        {
                this._addTransform("translate", arguments);
        },

        /**
         * Translates the shape along the x-axis. When translating x and y coordinates,
         * use the `translate` method.
         *
         * @method translateX
         * @param {Number} x The value to translate.
         */
        translateX: function()
    {
        this._addTransform("translateX", arguments);
    },

        /**
         * Translates the shape along the y-axis. When translating x and y coordinates,
         * use the `translate` method.
         *
         * @method translateY
         * @param {Number} y The value to translate.
         */
        translateY: function()
    {
        this._addTransform("translateY", arguments);
    },

    /**
     * Skews the shape around the x-axis and y-axis.
     *
     * @method skew
     * @param {Number} x The value to skew on the x-axis.
     * @param {Number} y The value to skew on the y-axis.
     */
    skew: function()
    {
        this._addTransform("skew", arguments);
    },

        /**
         * Skews the shape around the x-axis.
         *
         * @method skewX
         * @param {Number} x x-coordinate
         */
    skewX: function()
    {
        this._addTransform("skewX", arguments);
    },

        /**
         * Skews the shape around the y-axis.
         *
         * @method skewY
         * @param {Number} y y-coordinate
         */
    skewY: function()
    {
        this._addTransform("skewY", arguments);
    },

        /**
         * Rotates the shape clockwise around it transformOrigin.
         *
         * @method rotate
         * @param {Number} deg The degree of the rotation.
         */
    rotate: function()
    {
        this._addTransform("rotate", arguments);
    },

        /**
         * Specifies a 2d scaling operation.
         *
         * @method scale
         * @param {Number} val
         */
    scale: function()
    {
        this._addTransform("scale", arguments);
    },

    /**
     * Adds a transform to the shape.
     *
     * @method _addTransform
     * @param {String} type The transform being applied.
     * @param {Array} args The arguments for the transform.
         * @private
         */
        _addTransform: function(type, args)
        {
        args = Y.Array(args);
        this._transform = Y_LANG.trim(this._transform + " " + type + "(" + args.join(", ") + ")");
        args.unshift(type);
        this._transforms.push(args);
        if(this.initialized)
        {
            this._updateTransform();
        }
        },

        /**
     * Applies all transforms.
     *
     * @method _updateTransform
         * @private
         */
        _updateTransform: function()
        {
                var isPath = this._type === "path",
            node = this.node,
                        key,
                        transform,
                        transformOrigin,
                        x,
                        y,
            tx,
            ty,
            matrix = this.matrix,
            normalizedMatrix = this._normalizedMatrix,
            i,
            len = this._transforms.length;

        if(isPath || (this._transforms && this._transforms.length > 0))
                {
            x = this._x;
            y = this._y;
            transformOrigin = this.get("transformOrigin");
            tx = x + (transformOrigin[0] * this.get("width"));
            ty = y + (transformOrigin[1] * this.get("height"));
            //need to use translate for x/y coords
            if(isPath)
            {
                //adjust origin for custom shapes
                if(!(this instanceof Y.SVGPath))
                {
                    tx = this._left + (transformOrigin[0] * this.get("width"));
                    ty = this._top + (transformOrigin[1] * this.get("height"));
                }
                normalizedMatrix.init({dx: x + this._left, dy: y + this._top});
            }
            normalizedMatrix.translate(tx, ty);
            for(i = 0; i < len; ++i)
            {
                key = this._transforms[i].shift();
                if(key)
                {
                    normalizedMatrix[key].apply(normalizedMatrix, this._transforms[i]);
                    matrix[key].apply(matrix, this._transforms[i]);
                }
                if(isPath)
                {
                    this._transforms[i].unshift(key);
                }
                        }
            normalizedMatrix.translate(-tx, -ty);
            transform = "matrix(" + normalizedMatrix.a + "," +
                            normalizedMatrix.b + "," +
                            normalizedMatrix.c + "," +
                            normalizedMatrix.d + "," +
                            normalizedMatrix.dx + "," +
                            normalizedMatrix.dy + ")";
                }
        this._graphic.addToRedrawQueue(this);
        if(transform)
                {
            node.setAttribute("transform", transform);
        }
        if(!isPath)
        {
            this._transforms = [];
        }
        },

        /**
         * Draws the shape.
         *
         * @method _draw
         * @private
         */
        _draw: function()
        {
                var node = this.node;
                node.setAttribute("width", this.get("width"));
                node.setAttribute("height", this.get("height"));
                node.setAttribute("x", this._x);
                node.setAttribute("y", this._y);
                node.style.left = this._x + "px";
                node.style.top = this._y + "px";
                this._fillChangeHandler();
                this._strokeChangeHandler();
                this._updateTransform();
        },

        /**
     * Updates `Shape` based on attribute changes.
     *
     * @method _updateHandler
         * @private
         */
        _updateHandler: function()
        {
                this._draw();
        },

    /**
     * Storage for the transform attribute.
     *
     * @property _transform
     * @type String
     * @private
     */
    _transform: "",

        /**
         * Returns the bounds for a shape.
         *
     * Calculates the a new bounding box from the original corner coordinates (base on size and position) and the transform matrix.
     * The calculated bounding box is used by the graphic instance to calculate its viewBox.
     *
         * @method getBounds
         * @return Object
         */
        getBounds: function()
        {
                var type = this._type,
                        stroke = this.get("stroke"),
            w = this.get("width"),
                        h = this.get("height"),
                        x = type === "path" ? 0 : this._x,
                        y = type === "path" ? 0 : this._y,
            wt = 0;
        if(stroke && stroke.weight)
        {
            wt = stroke.weight;
            w = (x + w + wt) - (x - wt);
            h = (y + h + wt) - (y - wt);
            x -= wt;
            y -= wt;
        }
                return this._normalizedMatrix.getContentRect(w, h, x, y);
        },

    /**
     * Places the shape above all other shapes.
     *
     * @method toFront
     */
    toFront: function()
    {
        var graphic = this.get("graphic");
        if(graphic)
        {
            graphic._toFront(this);
        }
    },

    /**
     * Places the shape underneath all other shapes.
     *
     * @method toFront
     */
    toBack: function()
    {
        var graphic = this.get("graphic");
        if(graphic)
        {
            graphic._toBack(this);
        }
    },

    /**
     * Parses path data string and call mapped methods.
     *
     * @method _parsePathData
     * @param {String} val The path data
     * @private
     */
    _parsePathData: function(val)
    {
        var method,
            methodSymbol,
            args,
            commandArray = Y.Lang.trim(val.match(SPLITPATHPATTERN)),
            i,
            len,
            str,
            symbolToMethod = this._pathSymbolToMethod;
        if(commandArray)
        {
            this.clear();
            len = commandArray.length || 0;
            for(i = 0; i < len; i = i + 1)
            {
                str = commandArray[i];
                methodSymbol = str.substr(0, 1);
                args = str.substr(1).match(SPLITARGSPATTERN);
                method = symbolToMethod[methodSymbol];
                if(method)
                {
                    if(args)
                    {
                        this[method].apply(this, args);
                    }
                    else
                    {
                        this[method].apply(this);
                    }
                }
            }
            this.end();
        }
    },

    /**
     * Destroys the shape instance.
     *
     * @method destroy
     */
    destroy: function()
    {
        var graphic = this.get("graphic");
        if(graphic)
        {
            graphic.removeShape(this);
        }
        else
        {
            this._destroy();
        }
    },

    /**
     *  Implementation for shape destruction
     *
     *  @method destroy
     *  @protected
     */
    _destroy: function()
    {
        if(this.node)
        {
            Y.Event.purgeElement(this.node, true);
            if(this.node.parentNode)
            {
                this.node.parentNode.removeChild(this.node);
            }
            this.node = null;
        }
    }
 }, Y.SVGDrawing.prototype));

SVGShape.ATTRS = {
        /**
         * An array of x, y values which indicates the transformOrigin in which to rotate the shape. Valid values range between 0 and 1 representing a
         * fraction of the shape's corresponding bounding box dimension. The default value is [0.5, 0.5].
         *
         * @config transformOrigin
         * @type Array
         */
        transformOrigin: {
                valueFn: function()
                {
                        return [0.5, 0.5];
                }
        },

    /**
     * <p>A string containing, in order, transform operations applied to the shape instance. The `transform` string can contain the following values:
     *
     *    <dl>
     *        <dt>rotate</dt><dd>Rotates the shape clockwise around it transformOrigin.</dd>
     *        <dt>translate</dt><dd>Specifies a 2d translation.</dd>
     *        <dt>skew</dt><dd>Skews the shape around the x-axis and y-axis.</dd>
     *        <dt>scale</dt><dd>Specifies a 2d scaling operation.</dd>
     *        <dt>translateX</dt><dd>Translates the shape along the x-axis.</dd>
     *        <dt>translateY</dt><dd>Translates the shape along the y-axis.</dd>
     *        <dt>skewX</dt><dd>Skews the shape around the x-axis.</dd>
     *        <dt>skewY</dt><dd>Skews the shape around the y-axis.</dd>
     *        <dt>matrix</dt><dd>Specifies a 2D transformation matrix comprised of the specified six values.</dd>
     *    </dl>
     * </p>
     * <p>Applying transforms through the transform attribute will reset the transform matrix and apply a new transform. The shape class also contains
     * corresponding methods for each transform that will apply the transform to the current matrix. The below code illustrates how you might use the
     * `transform` attribute to instantiate a recangle with a rotation of 45 degrees.</p>
            var myRect = new Y.Rect({
                type:"rect",
                width: 50,
                height: 40,
                transform: "rotate(45)"
            };
     * <p>The code below would apply `translate` and `rotate` to an existing shape.</p>

        myRect.set("transform", "translate(40, 50) rotate(45)");
         * @config transform
     * @type String
         */
        transform: {
                setter: function(val)
        {
            this.matrix.init();
            this._normalizedMatrix.init();
            this._transforms = this.matrix.getTransformArray(val);
            this._transform = val;
            return val;
                },

        getter: function()
        {
            return this._transform;
        }
        },

        /**
         * Unique id for class instance.
         *
         * @config id
         * @type String
         */
        id: {
                valueFn: function()
                {
                        return Y.guid();
                },

                setter: function(val)
                {
                        var node = this.node;
                        if(node)
                        {
                                node.setAttribute("id", val);
                        }
                        return val;
                }
        },

        /**
         * Indicates the x position of shape.
         *
         * @config x
         * @type Number
         */
        x: {
        getter: function()
        {
            return this._x;
        },

        setter: function(val)
        {
            var transform = this.get("transform");
            this._x = val;
            if(transform)
            {
                this.set("transform", transform);
            }
        }
        },

        /**
         * Indicates the y position of shape.
         *
         * @config y
         * @type Number
         */
        y: {
        getter: function()
        {
            return this._y;
        },

        setter: function(val)
        {
            var transform = this.get("transform");
            this._y = val;
            if(transform)
            {
                this.set("transform", transform);
            }
        }
        },

        /**
         * Indicates the width of the shape
         *
         * @config width
         * @type Number
         */
        width: {
        value: 0
    },

        /**
         * Indicates the height of the shape
         *
         * @config height
         * @type Number
         */
        height: {
        value: 0
    },

        /**
         * Indicates whether the shape is visible.
         *
         * @config visible
         * @type Boolean
         */
        visible: {
                value: true,

                setter: function(val){
                        var visibility = val ? "visible" : "hidden";
                        if(this.node)
            {
                this.node.style.visibility = visibility;
            }
                        return val;
                }
        },

    /**
     * Only implemented in SVG implementation.
     * Applies the SVG shape-rendering attribute to the shape.
     *  <dl>
     *      <dt>auto</dt>
     *      <dd>Indicates that the user agent shall make appropriate tradeoffs to balance speed,
     *      crisp edges and geometric precision, but with geometric precision given more importance than speed and crisp edges.</dd>
     *      <dt>optimizeSpeed</dt>
     *      <dd>Indicates that the user agent shall emphasize rendering speed over geometric precision and crisp edges.
     *      This option will sometimes cause the user agent to turn off shape anti-aliasing.</dd>
     *      <dt>crispEdges</dt>
     *      <dd>Indicates that the user agent shall attempt to emphasize the contrast between clean edges of artwork over rendering
     *      speed and geometric precision. To achieve crisp edges, the user agent might turn off anti-aliasing for all lines and curves
     *      or possibly just for straight lines which are close to vertical or horizontal. Also, the user agent might adjust line
     *      positions and line widths to align edges with device pixels.</dd>
     *      <dt>geometricPrecision</dt>
     *      <dd>Indicates that the user agent shall emphasize geometric precision over speed and crisp edges.</dd>
     *  </dl>
     *
     *  @config shapeRendering
     *  @type String
     */
    shapeRendering: {
        value: "auto",

        setter: function(val) {
            if(this.node)
            {
                Y.DOM.setAttribute(this.node, "shape-rendering", val);
            }
            return val;
        }
    },


        /**
         * Contains information about the fill of the shape.
     *  <dl>
     *      <dt>color</dt><dd>The color of the fill.</dd>
     *      <dt>opacity</dt><dd>Number between 0 and 1 that indicates the opacity of the fill. The default value is 1.</dd>
     *      <dt>type</dt><dd>Type of fill.
     *          <dl>
     *              <dt>solid</dt><dd>Solid single color fill. (default)</dd>
     *              <dt>linear</dt><dd>Linear gradient fill.</dd>
     *              <dt>radial</dt><dd>Radial gradient fill.</dd>
     *          </dl>
     *      </dd>
     *  </dl>
     *  <p>If a `linear` or `radial` is specified as the fill type. The following additional property is used:
     *  <dl>
     *      <dt>stops</dt><dd>An array of objects containing the following properties:
     *          <dl>
     *              <dt>color</dt><dd>The color of the stop.</dd>
     *              <dt>opacity</dt><dd>Number between 0 and 1 that indicates the opacity of the stop. The default value is 1.
     *              Note: No effect for IE 6 - 8</dd>
     *              <dt>offset</dt><dd>Number between 0 and 1 indicating where the color stop is positioned.</dd>
     *          </dl>
     *      </dd>
     *      <p>Linear gradients also have the following property:</p>
     *      <dt>rotation</dt><dd>Linear gradients flow left to right by default. The rotation property allows you to change the
     *      flow by rotation. (e.g. A rotation of 180 would make the gradient pain from right to left.)</dd>
     *      <p>Radial gradients have the following additional properties:</p>
     *      <dt>r</dt><dd>Radius of the gradient circle.</dd>
     *      <dt>fx</dt><dd>Focal point x-coordinate of the gradient.</dd>
     *      <dt>fy</dt><dd>Focal point y-coordinate of the gradient.</dd>
     *      <dt>cx</dt><dd>
     *          <p>The x-coordinate of the center of the gradient circle. Determines where the color stop begins. The default value 0.5.</p>
     *          <p><strong>Note: </strong>Currently, this property is not implemented for corresponding `CanvasShape` and
     *          `VMLShape` classes which are used on Android or IE 6 - 8.</p>
     *      </dd>
     *      <dt>cy</dt><dd>
     *          <p>The y-coordinate of the center of the gradient circle. Determines where the color stop begins. The default value 0.5.</p>
     *          <p><strong>Note: </strong>Currently, this property is not implemented for corresponding `CanvasShape` and `VMLShape`
     *          classes which are used on Android or IE 6 - 8.</p>
     *      </dd>
     *  </dl>
         *
         * @config fill
         * @type Object
         */
        fill: {
                valueFn: "_getDefaultFill",

                setter: function(val)
                {
                        var fill,
                                tmpl = this.get("fill") || this._getDefaultFill();
                        fill = (val) ? Y.merge(tmpl, val) : null;
                        if(fill && fill.color)
                        {
                                if(fill.color === undefined || fill.color === "none")
                                {
                                        fill.color = null;
                                }
                        }
                        return fill;
                }
        },

        /**
         * Contains information about the stroke of the shape.
     *  <dl>
     *      <dt>color</dt><dd>The color of the stroke.</dd>
     *      <dt>weight</dt><dd>Number that indicates the width of the stroke.</dd>
     *      <dt>opacity</dt><dd>Number between 0 and 1 that indicates the opacity of the stroke. The default value is 1.</dd>
     *      <dt>dashstyle</dt>Indicates whether to draw a dashed stroke. When set to "none", a solid stroke is drawn. When set
     *      to an array, the first index indicates the length of the dash. The second index indicates the length of gap.
     *      <dt>linecap</dt><dd>Specifies the linecap for the stroke. The following values can be specified:
     *          <dl>
     *              <dt>butt (default)</dt><dd>Specifies a butt linecap.</dd>
     *              <dt>square</dt><dd>Specifies a sqare linecap.</dd>
     *              <dt>round</dt><dd>Specifies a round linecap.</dd>
     *          </dl>
     *      </dd>
     *      <dt>linejoin</dt><dd>Specifies a linejoin for the stroke. The following values can be specified:
     *          <dl>
     *              <dt>round (default)</dt><dd>Specifies that the linejoin will be round.</dd>
     *              <dt>bevel</dt><dd>Specifies a bevel for the linejoin.</dd>
     *              <dt>miter limit</dt><dd>An integer specifying the miter limit of a miter linejoin. If you want to specify a linejoin
     *              of miter, you simply specify the limit as opposed to having separate miter and miter limit values.</dd>
     *          </dl>
     *      </dd>
     *  </dl>
         *
         * @config stroke
         * @type Object
         */
        stroke: {
                valueFn: "_getDefaultStroke",

                setter: function(val)
                {
                        var tmpl = this.get("stroke") || this._getDefaultStroke(),
                wt;
            if(val && val.hasOwnProperty("weight"))
            {
                wt = parseInt(val.weight, 10);
                if(!isNaN(wt))
                {
                    val.weight = wt;
                }
            }
            return (val) ? Y.merge(tmpl, val) : null;
                }
        },

        // Only implemented in SVG
        // Determines whether the instance will receive mouse events.
        //
        // @config pointerEvents
        // @type string
        //
        pointerEvents: {
                valueFn: function()
                {
                        var val = "visiblePainted",
                                node = this.node;
                        if(node)
                        {
                                node.setAttribute("pointer-events", val);
                        }
                        return val;
                },

                setter: function(val)
                {
                        var node = this.node;
                        if(node)
                        {
                                node.setAttribute("pointer-events", val);
                        }
                        return val;
                }
        },

        /**
         * Dom node for the shape.
         *
         * @config node
         * @type HTMLElement
         * @readOnly
         */
        node: {
                readOnly: true,

        getter: function()
        {
            return this.node;
        }
        },

    /**
     * Represents an SVG Path string. This will be parsed and added to shape's API to represent the SVG data across all
     * implementations. Note that when using VML or SVG implementations, part of this content will be added to the DOM using
     * respective VML/SVG attributes. If your content comes from an untrusted source, you will need to ensure that no
     * malicious code is included in that content.
     *
     * @config data
     * @type String
     */
    data: {
        setter: function(val)
        {
            if(this.get("node"))
            {
                this._parsePathData(val);
            }
            return val;
        }
    },

        /**
         * Reference to the parent graphic instance
         *
         * @config graphic
         * @type SVGGraphic
         * @readOnly
         */
        graphic: {
                readOnly: true,

        getter: function()
        {
            return this._graphic;
        }
        }
};
Y.SVGShape = SVGShape;

/**
 * <a href="http://www.w3.org/TR/SVG/">SVG</a> implementation of the <a href="Path.html">`Path`</a> class.
 * `SVGPath` is not intended to be used directly. Instead, use the <a href="Path.html">`Path`</a> class.
 * If the browser has <a href="http://www.w3.org/TR/SVG/">SVG</a> capabilities, the <a href="Path.html">`Path`</a>
 * class will point to the `SVGPath` class.
 *
 * @module graphics
 * @class SVGPath
 * @extends SVGShape
 * @constructor
 */
SVGPath = function()
{
        SVGPath.superclass.constructor.apply(this, arguments);
};
SVGPath.NAME = "path";
Y.extend(SVGPath, Y.SVGShape, {
    /**
     * Left edge of the path
     *
     * @property _left
     * @type Number
     * @private
     */
    _left: 0,

    /**
     * Right edge of the path
     *
     * @property _right
     * @type Number
     * @private
     */
    _right: 0,

    /**
     * Top edge of the path
     *
     * @property _top
     * @type Number
     * @private
     */
    _top: 0,

    /**
     * Bottom edge of the path
     *
     * @property _bottom
     * @type Number
     * @private
     */
    _bottom: 0,

    /**
     * Indicates the type of shape
     *
     * @property _type
     * @readOnly
     * @type String
     * @private
     */
    _type: "path",

    /**
     * Storage for path
     *
     * @property _path
     * @type String
     * @private
     */
        _path: ""
});

SVGPath.ATTRS = Y.merge(Y.SVGShape.ATTRS, {
        /**
         * Indicates the path used for the node.
         *
         * @config path
         * @type String
     * @readOnly
         */
        path: {
                readOnly: true,

                getter: function()
                {
                        return this._path;
                }
        },

        /**
         * Indicates the width of the shape
         *
         * @config width
         * @type Number
         */
        width: {
                getter: function()
                {
                        var val = Math.max(this._right - this._left, 0);
                        return val;
                }
        },

        /**
         * Indicates the height of the shape
         *
         * @config height
         * @type Number
         */
        height: {
                getter: function()
                {
                        return Math.max(this._bottom - this._top, 0);
                }
        }
});
Y.SVGPath = SVGPath;
/**
 * <a href="http://www.w3.org/TR/SVG/">SVG</a> implementation of the <a href="Rect.html">`Rect`</a> class.
 * `SVGRect` is not intended to be used directly. Instead, use the <a href="Rect.html">`Rect`</a> class.
 * If the browser has <a href="http://www.w3.org/TR/SVG/">SVG</a> capabilities, the <a href="Rect.html">`Rect`</a>
 * class will point to the `SVGRect` class.
 *
 * @module graphics
 * @class SVGRect
 * @constructor
 */
SVGRect = function()
{
        SVGRect.superclass.constructor.apply(this, arguments);
};
SVGRect.NAME = "rect";
Y.extend(SVGRect, Y.SVGShape, {
    /**
     * Indicates the type of shape
     *
     * @property _type
     * @type String
     * @private
     */
    _type: "rect"
 });
SVGRect.ATTRS = Y.SVGShape.ATTRS;
Y.SVGRect = SVGRect;
/**
 * <a href="http://www.w3.org/TR/SVG/">SVG</a> implementation of the <a href="Ellipse.html">`Ellipse`</a> class.
 * `SVGEllipse` is not intended to be used directly. Instead, use the <a href="Ellipse.html">`Ellipse`</a> class.
 * If the browser has <a href="http://www.w3.org/TR/SVG/">SVG</a> capabilities, the <a href="Ellipse.html">`Ellipse`</a>
 * class will point to the `SVGEllipse` class.
 *
 * @module graphics
 * @class SVGEllipse
 * @constructor
 */
SVGEllipse = function()
{
        SVGEllipse.superclass.constructor.apply(this, arguments);
};

SVGEllipse.NAME = "ellipse";

Y.extend(SVGEllipse, SVGShape, {
        /**
         * Indicates the type of shape
         *
         * @property _type
         * @type String
     * @private
         */
        _type: "ellipse",

        /**
         * Updates the shape.
         *
         * @method _draw
         * @private
         */
        _draw: function()
        {
                var node = this.node,
                        w = this.get("width"),
                        h = this.get("height"),
                        x = this.get("x"),
                        y = this.get("y"),
                        xRadius = w * 0.5,
                        yRadius = h * 0.5,
                        cx = x + xRadius,
                        cy = y + yRadius;
                node.setAttribute("rx", xRadius);
                node.setAttribute("ry", yRadius);
                node.setAttribute("cx", cx);
                node.setAttribute("cy", cy);
                this._fillChangeHandler();
                this._strokeChangeHandler();
                this._updateTransform();
        }
});

SVGEllipse.ATTRS = Y.merge(SVGShape.ATTRS, {
        /**
         * Horizontal radius for the ellipse.
         *
         * @config xRadius
         * @type Number
         */
        xRadius: {
                setter: function(val)
                {
                        this.set("width", val * 2);
                },

                getter: function()
                {
                        var val = this.get("width");
                        if(val)
                        {
                                val *= 0.5;
                        }
                        return val;
                }
        },

        /**
         * Vertical radius for the ellipse.
         *
         * @config yRadius
         * @type Number
         * @readOnly
         */
        yRadius: {
                setter: function(val)
                {
                        this.set("height", val * 2);
                },

                getter: function()
                {
                        var val = this.get("height");
                        if(val)
                        {
                                val *= 0.5;
                        }
                        return val;
                }
        }
});
Y.SVGEllipse = SVGEllipse;
/**
 * <a href="http://www.w3.org/TR/SVG/">SVG</a> implementation of the <a href="Circle.html">`Circle`</a> class.
 * `SVGCircle` is not intended to be used directly. Instead, use the <a href="Circle.html">`Circle`</a> class.
 * If the browser has <a href="http://www.w3.org/TR/SVG/">SVG</a> capabilities, the <a href="Circle.html">`Circle`</a>
 * class will point to the `SVGCircle` class.
 *
 * @module graphics
 * @class SVGCircle
 * @constructor
 */
 SVGCircle = function()
 {
    SVGCircle.superclass.constructor.apply(this, arguments);
 };

 SVGCircle.NAME = "circle";

 Y.extend(SVGCircle, Y.SVGShape, {

    /**
     * Indicates the type of shape
     *
     * @property _type
     * @type String
     * @private
     */
    _type: "circle",

    /**
     * Updates the shape.
     *
     * @method _draw
     * @private
     */
    _draw: function()
    {
        var node = this.node,
            x = this.get("x"),
            y = this.get("y"),
            radius = this.get("radius"),
            cx = x + radius,
            cy = y + radius;
        node.setAttribute("r", radius);
        node.setAttribute("cx", cx);
        node.setAttribute("cy", cy);
        this._fillChangeHandler();
        this._strokeChangeHandler();
        this._updateTransform();
    }
 });

SVGCircle.ATTRS = Y.merge(Y.SVGShape.ATTRS, {
        /**
         * Indicates the width of the shape
         *
         * @config width
         * @type Number
         */
    width: {
        setter: function(val)
        {
            this.set("radius", val/2);
            return val;
        },

        getter: function()
        {
            return this.get("radius") * 2;
        }
    },

        /**
         * Indicates the height of the shape
         *
         * @config height
         * @type Number
         */
    height: {
        setter: function(val)
        {
            this.set("radius", val/2);
            return val;
        },

        getter: function()
        {
            return this.get("radius") * 2;
        }
    },

    /**
     * Radius of the circle
     *
     * @config radius
     * @type Number
     */
    radius: {
        value: 0
    }
});
Y.SVGCircle = SVGCircle;
/**
 * Draws pie slices
 *
 * @module graphics
 * @class SVGPieSlice
 * @constructor
 */
SVGPieSlice = function()
{
        SVGPieSlice.superclass.constructor.apply(this, arguments);
};
SVGPieSlice.NAME = "svgPieSlice";
Y.extend(SVGPieSlice, Y.SVGShape, Y.mix({
    /**
     * Indicates the type of shape
     *
     * @property _type
     * @type String
     * @private
     */
    _type: "path",

        /**
         * Change event listener
         *
         * @private
         * @method _updateHandler
         */
        _draw: function()
        {
        var x = this.get("cx"),
            y = this.get("cy"),
            startAngle = this.get("startAngle"),
            arc = this.get("arc"),
            radius = this.get("radius");
        this.clear();
        this.drawWedge(x, y, startAngle, arc, radius);
                this.end();
        }
 }, Y.SVGDrawing.prototype));
SVGPieSlice.ATTRS = Y.mix({
    cx: {
        value: 0
    },

    cy: {
        value: 0
    },
    /**
     * Starting angle in relation to a circle in which to begin the pie slice drawing.
     *
     * @config startAngle
     * @type Number
     */
    startAngle: {
        value: 0
    },

    /**
     * Arc of the slice.
     *
     * @config arc
     * @type Number
     */
    arc: {
        value: 0
    },

    /**
     * Radius of the circle in which the pie slice is drawn
     *
     * @config radius
     * @type Number
     */
    radius: {
        value: 0
    }
}, Y.SVGShape.ATTRS);
Y.SVGPieSlice = SVGPieSlice;
/**
 * <a href="http://www.w3.org/TR/SVG/">SVG</a> implementation of the <a href="Graphic.html">`Graphic`</a> class.
 * `SVGGraphic` is not intended to be used directly. Instead, use the <a href="Graphic.html">`Graphic`</a> class.
 * If the browser has <a href="http://www.w3.org/TR/SVG/">SVG</a> capabilities, the <a href="Graphic.html">`Graphic`</a>
 * class will point to the `SVGGraphic` class.
 *
 * @module graphics
 * @class SVGGraphic
 * @constructor
 */
SVGGraphic = function() {
    SVGGraphic.superclass.constructor.apply(this, arguments);
};

SVGGraphic.NAME = "svgGraphic";

SVGGraphic.ATTRS = {
    /**
     * Whether or not to render the `Graphic` automatically after to a specified parent node after init. This can be a Node
     * instance or a CSS selector string.
     *
     * @config render
     * @type Node | String
     */
    render: {},

    /**
         * Unique id for class instance.
         *
         * @config id
         * @type String
         */
        id: {
                valueFn: function()
                {
                        return Y.guid();
                },

                setter: function(val)
                {
                        var node = this._node;
                        if(node)
                        {
                                node.setAttribute("id", val);
                        }
                        return val;
                }
        },

    /**
     * Key value pairs in which a shape instance is associated with its id.
     *
     *  @config shapes
     *  @type Object
     *  @readOnly
     */
    shapes: {
        readOnly: true,

        getter: function()
        {
            return this._shapes;
        }
    },

    /**
     *  Object containing size and coordinate data for the content of a Graphic in relation to the coordSpace node.
     *
     *  @config contentBounds
     *  @type Object
     *  @readOnly
     */
    contentBounds: {
        readOnly: true,

        getter: function()
        {
            return this._contentBounds;
        }
    },

    /**
     *  The html element that represents to coordinate system of the Graphic instance.
     *
     *  @config node
     *  @type HTMLElement
     *  @readOnly
     */
    node: {
        readOnly: true,

        getter: function()
        {
            return this._node;
        }
    },

        /**
         * Indicates the width of the `Graphic`.
         *
         * @config width
         * @type Number
         */
    width: {
        setter: function(val)
        {
            if(this._node)
            {
                this._node.style.width = val + "px";
            }
            return val;
        }
    },

        /**
         * Indicates the height of the `Graphic`.
         *
         * @config height
         * @type Number
         */
    height: {
        setter: function(val)
        {
            if(this._node)
            {
                this._node.style.height = val  + "px";
            }
            return val;
        }
    },

    /**
     *  Determines the sizing of the Graphic.
     *
     *  <dl>
     *      <dt>sizeContentToGraphic</dt><dd>The Graphic's width and height attributes are, either explicitly set through the
     *      <code>width</code> and <code>height</code> attributes or are determined by the dimensions of the parent element. The
     *      content contained in the Graphic will be sized to fit with in the Graphic instance's dimensions. When using this
     *      setting, the <code>preserveAspectRatio</code> attribute will determine how the contents are sized.</dd>
     *      <dt>sizeGraphicToContent</dt><dd>(Also accepts a value of true) The Graphic's width and height are determined by the
     *      size and positioning of the content.</dd>
     *      <dt>false</dt><dd>The Graphic's width and height attributes are, either explicitly set through the <code>width</code>
     *      and <code>height</code> attributes or are determined by the dimensions of the parent element. The contents of the
     *      Graphic instance are not affected by this setting.</dd>
     *  </dl>
     *
     *
     *  @config autoSize
     *  @type Boolean | String
     *  @default false
     */
    autoSize: {
        value: false
    },

    /**
     * Determines how content is sized when <code>autoSize</code> is set to <code>sizeContentToGraphic</code>.
     *
     *  <dl>
     *      <dt>none<dt><dd>Do not force uniform scaling. Scale the graphic content of the given element non-uniformly if necessary
     *      such that the element's bounding box exactly matches the viewport rectangle.</dd>
     *      <dt>xMinYMin</dt><dd>Force uniform scaling position along the top left of the Graphic's node.</dd>
     *      <dt>xMidYMin</dt><dd>Force uniform scaling horizontally centered and positioned at the top of the Graphic's node.<dd>
     *      <dt>xMaxYMin</dt><dd>Force uniform scaling positioned horizontally from the right and vertically from the top.</dd>
     *      <dt>xMinYMid</dt>Force uniform scaling positioned horizontally from the left and vertically centered.</dd>
     *      <dt>xMidYMid (the default)</dt><dd>Force uniform scaling with the content centered.</dd>
     *      <dt>xMaxYMid</dt><dd>Force uniform scaling positioned horizontally from the right and vertically centered.</dd>
     *      <dt>xMinYMax</dt><dd>Force uniform scaling positioned horizontally from the left and vertically from the bottom.</dd>
     *      <dt>xMidYMax</dt><dd>Force uniform scaling horizontally centered and position vertically from the bottom.</dd>
     *      <dt>xMaxYMax</dt><dd>Force uniform scaling positioned horizontally from the right and vertically from the bottom.</dd>
     *  </dl>
     *
     * @config preserveAspectRatio
     * @type String
     * @default xMidYMid
     */
    preserveAspectRatio: {
        value: "xMidYMid"
    },

    /**
     * The contentBounds will resize to greater values but not to smaller values. (for performance)
     * When resizing the contentBounds down is desirable, set the resizeDown value to true.
     *
     * @config resizeDown
     * @type Boolean
     */
    resizeDown: {
        value: false
    },

        /**
         * Indicates the x-coordinate for the instance.
         *
         * @config x
         * @type Number
         */
    x: {
        getter: function()
        {
            return this._x;
        },

        setter: function(val)
        {
            this._x = val;
            if(this._node)
            {
                this._node.style.left = val + "px";
            }
            return val;
        }
    },

        /**
         * Indicates the y-coordinate for the instance.
         *
         * @config y
         * @type Number
         */
    y: {
        getter: function()
        {
            return this._y;
        },

        setter: function(val)
        {
            this._y = val;
            if(this._node)
            {
                this._node.style.top = val + "px";
            }
            return val;
        }
    },

    /**
     * Indicates whether or not the instance will automatically redraw after a change is made to a shape.
     * This property will get set to false when batching operations.
     *
     * @config autoDraw
     * @type Boolean
     * @default true
     * @private
     */
    autoDraw: {
        value: true
    },

    visible: {
        value: true,

        setter: function(val)
        {
            this._toggleVisible(val);
            return val;
        }
    },

    //
    //  Indicates the pointer-events setting for the svg:svg element.
    //
    //  @config pointerEvents
    //  @type String
    //
    pointerEvents: {
        value: "none"
    }
};

Y.extend(SVGGraphic, Y.GraphicBase, {
    /**
     * Sets the value of an attribute.
     *
     * @method set
     * @param {String|Object} name The name of the attribute. Alternatively, an object of key value pairs can
     * be passed in to set multiple attributes at once.
     * @param {Any} value The value to set the attribute to. This value is ignored if an object is received as
     * the name param.
     */
        set: function()
        {
                var host = this,
            attr = arguments[0],
            redrawAttrs = {
                autoDraw: true,
                autoSize: true,
                preserveAspectRatio: true,
                resizeDown: true
            },
            key,
            forceRedraw = false;
                AttributeLite.prototype.set.apply(host, arguments);
        if(host._state.autoDraw === true && Y.Object.size(this._shapes) > 0)
        {
            if(Y_LANG.isString && redrawAttrs[attr])
            {
                forceRedraw = true;
            }
            else if(Y_LANG.isObject(attr))
            {
                for(key in redrawAttrs)
                {
                    if(redrawAttrs.hasOwnProperty(key) && attr[key])
                    {
                        forceRedraw = true;
                        break;
                    }
                }
            }
        }
        if(forceRedraw)
        {
            host._redraw();
        }
        },

    /**
     * Storage for `x` attribute.
     *
     * @property _x
     * @type Number
     * @private
     */
    _x: 0,

    /**
     * Storage for `y` attribute.
     *
     * @property _y
     * @type Number
     * @private
     */
    _y: 0,

    /**
     * Gets the current position of the graphic instance in page coordinates.
     *
     * @method getXY
     * @return Array The XY position of the shape.
     */
    getXY: function()
    {
        var node = this._node,
            xy;
        if(node)
        {
            xy = Y.DOM.getXY(node);
        }
        return xy;
    },

    /**
     * Initializes the class.
     *
     * @method initializer
     * @private
     */
    initializer: function() {
        var render = this.get("render"),
            visibility = this.get("visible") ? "visible" : "hidden";
        this._shapes = {};
                this._contentBounds = {
            left: 0,
            top: 0,
            right: 0,
            bottom: 0
        };
        this._gradients = {};
        this._node = DOCUMENT.createElement('div');
        this._node.style.position = "absolute";
        this._node.style.left = this.get("x") + "px";
        this._node.style.top = this.get("y") + "px";
        this._node.style.visibility = visibility;
        this._contentNode = this._createGraphics();
        this._contentNode.style.visibility = visibility;
        this._contentNode.setAttribute("id", this.get("id"));
        this._node.appendChild(this._contentNode);
        if(render)
        {
            this.render(render);
        }
    },

    /**
     * Adds the graphics node to the dom.
     *
     * @method render
     * @param {HTMLElement} parentNode node in which to render the graphics node into.
     */
    render: function(render) {
        var parentNode = render || DOCUMENT.body,
            w,
            h;
        if(render instanceof Y.Node)
        {
            parentNode = render._node;
        }
        else if(Y.Lang.isString(render))
        {
            parentNode = Y.Selector.query(render, DOCUMENT.body, true);
        }
        w = this.get("width") || parseInt(Y.DOM.getComputedStyle(parentNode, "width"), 10);
        h = this.get("height") || parseInt(Y.DOM.getComputedStyle(parentNode, "height"), 10);
        parentNode.appendChild(this._node);
        this.set("width", w);
        this.set("height", h);
        return this;
    },

    /**
     * Removes all nodes.
     *
     * @method destroy
     */
    destroy: function()
    {
        this.removeAllShapes();
        if(this._contentNode)
        {
            this._removeChildren(this._contentNode);
            if(this._contentNode.parentNode)
            {
                this._contentNode.parentNode.removeChild(this._contentNode);
            }
            this._contentNode = null;
        }
        if(this._node)
        {
            this._removeChildren(this._node);
            if(this._node.parentNode)
            {
                this._node.parentNode.removeChild(this._node);
            }
            this._node = null;
        }
    },

    /**
     * Generates a shape instance by type.
     *
     * @method addShape
     * @param {Object} cfg attributes for the shape
     * @return Shape
     */
    addShape: function(cfg)
    {
        cfg.graphic = this;
        if(!this.get("visible"))
        {
            cfg.visible = false;
        }
        var ShapeClass = this._getShapeClass(cfg.type),
            shape = new ShapeClass(cfg);
        this._appendShape(shape);
        return shape;
    },

    /**
     * Adds a shape instance to the graphic instance.
     *
     * @method _appendShape
     * @param {Shape} shape The shape instance to be added to the graphic.
     * @private
     */
    _appendShape: function(shape)
    {
        var node = shape.node,
            parentNode = this._frag || this._contentNode;
        if(this.get("autoDraw"))
        {
            parentNode.appendChild(node);
        }
        else
        {
            this._getDocFrag().appendChild(node);
        }
    },

    /**
     * Removes a shape instance from from the graphic instance.
     *
     * @method removeShape
     * @param {Shape|String} shape The instance or id of the shape to be removed.
     */
    removeShape: function(shape)
    {
        if(!(shape instanceof SVGShape))
        {
            if(Y_LANG.isString(shape))
            {
                shape = this._shapes[shape];
            }
        }
        if(shape && shape instanceof SVGShape)
        {
            shape._destroy();
            delete this._shapes[shape.get("id")];
        }
        if(this.get("autoDraw"))
        {
            this._redraw();
        }
        return shape;
    },

    /**
     * Removes all shape instances from the dom.
     *
     * @method removeAllShapes
     */
    removeAllShapes: function()
    {
        var shapes = this._shapes,
            i;
        for(i in shapes)
        {
            if(shapes.hasOwnProperty(i))
            {
                shapes[i]._destroy();
            }
        }
        this._shapes = {};
    },

    /**
     * Removes all child nodes.
     *
     * @method _removeChildren
     * @param {HTMLElement} node
     * @private
     */
    _removeChildren: function(node)
    {
        if(node.hasChildNodes())
        {
            var child;
            while(node.firstChild)
            {
                child = node.firstChild;
                this._removeChildren(child);
                node.removeChild(child);
            }
        }
    },

    /**
     * Clears the graphics object.
     *
     * @method clear
     */
    clear: function() {
        this.removeAllShapes();
    },

    /**
     * Toggles visibility
     *
     * @method _toggleVisible
     * @param {Boolean} val indicates visibilitye
     * @private
     */
    _toggleVisible: function(val)
    {
        var i,
            shapes = this._shapes,
            visibility = val ? "visible" : "hidden";
        if(shapes)
        {
            for(i in shapes)
            {
                if(shapes.hasOwnProperty(i))
                {
                    shapes[i].set("visible", val);
                }
            }
        }
        if(this._contentNode)
        {
            this._contentNode.style.visibility = visibility;
        }
        if(this._node)
        {
            this._node.style.visibility = visibility;
        }
    },

    /**
     * Returns a shape class. Used by `addShape`.
     *
     * @method _getShapeClass
     * @param {Shape | String} val Indicates which shape class.
     * @return Function
     * @private
     */
    _getShapeClass: function(val)
    {
        var shape = this._shapeClass[val];
        if(shape)
        {
            return shape;
        }
        return val;
    },

    /**
     * Look up for shape classes. Used by `addShape` to retrieve a class for instantiation.
     *
     * @property _shapeClass
     * @type Object
     * @private
     */
    _shapeClass: {
        circle: Y.SVGCircle,
        rect: Y.SVGRect,
        path: Y.SVGPath,
        ellipse: Y.SVGEllipse,
        pieslice: Y.SVGPieSlice
    },

    /**
     * Returns a shape based on the id of its dom node.
     *
     * @method getShapeById
     * @param {String} id Dom id of the shape's node attribute.
     * @return Shape
     */
    getShapeById: function(id)
    {
        var shape = this._shapes[id];
        return shape;
    },

        /**
         * Allows for creating multiple shapes in order to batch appending and redraw operations.
         *
         * @method batch
         * @param {Function} method Method to execute.
         */
    batch: function(method)
    {
        var autoDraw = this.get("autoDraw");
        this.set("autoDraw", false);
        method();
        this.set("autoDraw", autoDraw);
    },

    /**
     * Returns a document fragment to for attaching shapes.
     *
     * @method _getDocFrag
     * @return DocumentFragment
     * @private
     */
    _getDocFrag: function()
    {
        if(!this._frag)
        {
            this._frag = DOCUMENT.createDocumentFragment();
        }
        return this._frag;
    },

    /**
     * Redraws all shapes.
     *
     * @method _redraw
     * @private
     */
    _redraw: function()
    {
        var autoSize = this.get("autoSize"),
            preserveAspectRatio = this.get("preserveAspectRatio"),
            box = this.get("resizeDown") ? this._getUpdatedContentBounds() : this._contentBounds,
            left = box.left,
            right = box.right,
            top = box.top,
            bottom = box.bottom,
            width = right - left,
            height = bottom - top,
            computedWidth,
            computedHeight,
            computedLeft,
            computedTop,
            node;
        if(autoSize)
        {
            if(autoSize === "sizeContentToGraphic")
            {
                node = this._node;
                computedWidth = parseFloat(Y.DOM.getComputedStyle(node, "width"));
                computedHeight = parseFloat(Y.DOM.getComputedStyle(node, "height"));
                computedLeft = computedTop = 0;
                this._contentNode.setAttribute("preserveAspectRatio", preserveAspectRatio);
            }
            else
            {
                computedWidth = width;
                computedHeight = height;
                computedLeft = left;
                computedTop = top;
                this._state.width = width;
                this._state.height = height;
                if(this._node)
                {
                    this._node.style.width = width + "px";
                    this._node.style.height = height + "px";
                }
            }
        }
        else
        {
                computedWidth = width;
                computedHeight = height;
                computedLeft = left;
                computedTop = top;
        }
        if(this._contentNode)
        {
            this._contentNode.style.left = computedLeft + "px";
            this._contentNode.style.top = computedTop + "px";
            this._contentNode.setAttribute("width", computedWidth);
            this._contentNode.setAttribute("height", computedHeight);
            this._contentNode.style.width = computedWidth + "px";
            this._contentNode.style.height = computedHeight + "px";
            this._contentNode.setAttribute("viewBox", "" + left + " " + top + " " + width + " " + height + "");
        }
        if(this._frag)
        {
            if(this._contentNode)
            {
                this._contentNode.appendChild(this._frag);
            }
            this._frag = null;
        }
    },

    /**
     * Adds a shape to the redraw queue and calculates the contentBounds. Used internally
     * by `Shape` instances.
     *
     * @method addToRedrawQueue
     * @param shape {SVGShape}
     * @protected
     */
    addToRedrawQueue: function(shape)
    {
        var shapeBox,
            box;
        this._shapes[shape.get("id")] = shape;
        if(!this.get("resizeDown"))
        {
            shapeBox = shape.getBounds();
            box = this._contentBounds;
            box.left = box.left < shapeBox.left ? box.left : shapeBox.left;
            box.top = box.top < shapeBox.top ? box.top : shapeBox.top;
            box.right = box.right > shapeBox.right ? box.right : shapeBox.right;
            box.bottom = box.bottom > shapeBox.bottom ? box.bottom : shapeBox.bottom;
            box.width = box.right - box.left;
            box.height = box.bottom - box.top;
            this._contentBounds = box;
        }
        if(this.get("autoDraw"))
        {
            this._redraw();
        }
    },

    /**
     * Recalculates and returns the `contentBounds` for the `Graphic` instance.
     *
     * @method _getUpdatedContentBounds
     * @return {Object}
     * @private
     */
    _getUpdatedContentBounds: function()
    {
        var bounds,
            i,
            shape,
            queue = this._shapes,
            box = {};
        for(i in queue)
        {
            if(queue.hasOwnProperty(i))
            {
                shape = queue[i];
                bounds = shape.getBounds();
                box.left = Y_LANG.isNumber(box.left) ? Math.min(box.left, bounds.left) : bounds.left;
                box.top = Y_LANG.isNumber(box.top) ? Math.min(box.top, bounds.top) : bounds.top;
                box.right = Y_LANG.isNumber(box.right) ? Math.max(box.right, bounds.right) : bounds.right;
                box.bottom = Y_LANG.isNumber(box.bottom) ? Math.max(box.bottom, bounds.bottom) : bounds.bottom;
            }
        }
        box.left = Y_LANG.isNumber(box.left) ? box.left : 0;
        box.top = Y_LANG.isNumber(box.top) ? box.top : 0;
        box.right = Y_LANG.isNumber(box.right) ? box.right : 0;
        box.bottom = Y_LANG.isNumber(box.bottom) ? box.bottom : 0;
        this._contentBounds = box;
        return box;
    },

    /**
     * Creates a contentNode element
     *
     * @method _createGraphics
     * @private
     */
    _createGraphics: function() {
        var contentNode = this._createGraphicNode("svg"),
            pointerEvents = this.get("pointerEvents");
        contentNode.style.position = "absolute";
        contentNode.style.top = "0px";
        contentNode.style.left = "0px";
        contentNode.style.overflow = "auto";
        contentNode.setAttribute("overflow", "auto");
        contentNode.setAttribute("pointer-events", pointerEvents);
        return contentNode;
    },

    /**
     * Creates a graphic node
     *
     * @method _createGraphicNode
     * @param {String} type node type to create
     * @param {String} pe specified pointer-events value
     * @return HTMLElement
     * @private
     */
    _createGraphicNode: function(type, pe)
    {
        var node = DOCUMENT.createElementNS("http://www.w3.org/2000/svg", "svg:" + type),
            v = pe || "none";
        if(type !== "defs" && type !== "stop" && type !== "linearGradient" && type !== "radialGradient")
        {
            node.setAttribute("pointer-events", v);
        }
        return node;
    },

    /**
     * Returns a reference to a gradient definition based on an id and type.
     *
     * @method getGradientNode
     * @param {String} key id that references the gradient definition
     * @param {String} type description of the gradient type
     * @return HTMLElement
     * @protected
     */
    getGradientNode: function(key, type)
    {
        var gradients = this._gradients,
            gradient,
            nodeType = type + "Gradient";
        if(gradients.hasOwnProperty(key) && gradients[key].tagName.indexOf(type) > -1)
        {
            gradient = this._gradients[key];
        }
        else
        {
            gradient = this._createGraphicNode(nodeType);
            if(!this._defs)
            {
                this._defs = this._createGraphicNode("defs");
                this._contentNode.appendChild(this._defs);
            }
            this._defs.appendChild(gradient);
            key = key || "gradient" + Math.round(100000 * Math.random());
            gradient.setAttribute("id", key);
            if(gradients.hasOwnProperty(key))
            {
                this._defs.removeChild(gradients[key]);
            }
            gradients[key] = gradient;
        }
        return gradient;
    },

    /**
     * Inserts shape on the top of the tree.
     *
     * @method _toFront
     * @param {SVGShape} Shape to add.
     * @private
     */
    _toFront: function(shape)
    {
        var contentNode = this._contentNode;
        if(shape instanceof Y.SVGShape)
        {
            shape = shape.get("node");
        }
        if(contentNode && shape)
        {
            contentNode.appendChild(shape);
        }
    },

    /**
     * Inserts shape as the first child of the content node.
     *
     * @method _toBack
     * @param {SVGShape} Shape to add.
     * @private
     */
    _toBack: function(shape)
    {
        var contentNode = this._contentNode,
            targetNode;
        if(shape instanceof Y.SVGShape)
        {
            shape = shape.get("node");
        }
        if(contentNode && shape)
        {
            targetNode = contentNode.firstChild;
            if(targetNode)
            {
                contentNode.insertBefore(shape, targetNode);
            }
            else
            {
                contentNode.appendChild(shape);
            }
        }
    }
});

Y.SVGGraphic = SVGGraphic;



}, '3.18.1', {"requires": ["graphics"]});