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/*
        Copyright (c) 2004-2006, The Dojo Foundation
        All Rights Reserved.

        Licensed under the Academic Free License version 2.1 or above OR the
        modified BSD license. For more information on Dojo licensing, see:

                http://dojotoolkit.org/community/licensing.shtml
*/



dojo.provide("dojo.charting.svg.Axis");
dojo.require("dojo.lang.common");
if (dojo.render.svg.capable) {
        dojo.extend(dojo.charting.Axis, {renderLines:function (plotArea, plot, plane) {
                if (this.nodes.lines) {
                        while (this.nodes.lines.childNodes.length > 0) {
                                this.nodes.lines.removeChild(this.nodes.lines.childNodes[0]);
                        }
                        if (this.nodes.lines.parentNode) {
                                this.nodes.lines.parentNode.removeChild(this.nodes.lines);
                                this.nodes.lines = null;
                        }
                }
                var area = plotArea.getArea();
                var g = this.nodes.lines = document.createElementNS(dojo.svg.xmlns.svg, "g");
                g.setAttribute("id", this.getId() + "-lines");
                for (var i = 0; i < this._labels.length; i++) {
                        if (this._labels[i].value == this.origin) {
                                continue;
                        }
                        var v = this.getCoord(this._labels[i].value, plotArea, plot);
                        var l = document.createElementNS(dojo.svg.xmlns.svg, "line");
                        l.setAttribute("style", "stroke:#999;stroke-width:1px;stroke-dasharray:1,4;");
                        if (plane == "x") {
                                l.setAttribute("y1", area.top);
                                l.setAttribute("y2", area.bottom);
                                l.setAttribute("x1", v);
                                l.setAttribute("x2", v);
                        } else {
                                if (plane == "y") {
                                        l.setAttribute("y1", v);
                                        l.setAttribute("y2", v);
                                        l.setAttribute("x1", area.left);
                                        l.setAttribute("x2", area.right);
                                }
                        }
                        g.appendChild(l);
                }
                return g;
        }, renderTicks:function (plotArea, plot, plane, coord) {
                if (this.nodes.ticks) {
                        while (this.nodes.ticks.childNodes.length > 0) {
                                this.nodes.ticks.removeChild(this.nodes.ticks.childNodes[0]);
                        }
                        if (this.nodes.ticks.parentNode) {
                                this.nodes.ticks.parentNode.removeChild(this.nodes.ticks);
                                this.nodes.ticks = null;
                        }
                }
                var g = this.nodes.ticks = document.createElementNS(dojo.svg.xmlns.svg, "g");
                g.setAttribute("id", this.getId() + "-ticks");
                for (var i = 0; i < this._labels.length; i++) {
                        var v = this.getCoord(this._labels[i].value, plotArea, plot);
                        var l = document.createElementNS(dojo.svg.xmlns.svg, "line");
                        l.setAttribute("style", "stroke:#000;stroke-width:1pt;");
                        if (plane == "x") {
                                l.setAttribute("y1", coord);
                                l.setAttribute("y2", coord + 3);
                                l.setAttribute("x1", v);
                                l.setAttribute("x2", v);
                        } else {
                                if (plane == "y") {
                                        l.setAttribute("y1", v);
                                        l.setAttribute("y2", v);
                                        l.setAttribute("x1", coord - 2);
                                        l.setAttribute("x2", coord + 2);
                                }
                        }
                        g.appendChild(l);
                }
                return g;
        }, renderLabels:function (plotArea, plot, plane, coord, textSize, anchor) {
                function createLabel(label, x, y, textSize, anchor) {
                        var text = document.createElementNS(dojo.svg.xmlns.svg, "text");
                        text.setAttribute("x", x);
                        text.setAttribute("y", (plane == "x" ? y : y + 2));
                        text.setAttribute("style", "text-anchor:" + anchor + ";font-family:sans-serif;font-size:" + textSize + "px;fill:#000;");
                        text.appendChild(document.createTextNode(label));
                        return text;
                }
                if (this.nodes.labels) {
                        while (this.nodes.labels.childNodes.length > 0) {
                                this.nodes.labels.removeChild(this.nodes.labels.childNodes[0]);
                        }
                        if (this.nodes.labels.parentNode) {
                                this.nodes.labels.parentNode.removeChild(this.nodes.labels);
                                this.nodes.labels = null;
                        }
                }
                var g = this.nodes.labels = document.createElementNS(dojo.svg.xmlns.svg, "g");
                g.setAttribute("id", this.getId() + "-labels");
                for (var i = 0; i < this._labels.length; i++) {
                        var v = this.getCoord(this._labels[i].value, plotArea, plot);
                        if (plane == "x") {
                                g.appendChild(createLabel(this._labels[i].label, v, coord, textSize, anchor));
                        } else {
                                if (plane == "y") {
                                        g.appendChild(createLabel(this._labels[i].label, coord, v, textSize, anchor));
                                }
                        }
                }
                return g;
        }, render:function (plotArea, plot, drawAgainst, plane) {
                if (!this._rerender && this.nodes.main) {
                        return this.nodes.main;
                }
                this._rerender = false;
                var area = plotArea.getArea();
                var stroke = 1;
                var style = "stroke:#000;stroke-width:" + stroke + "px;";
                var textSize = 10;
                var coord = drawAgainst.getCoord(this.origin, plotArea, plot);
                this.nodes.main = document.createElementNS(dojo.svg.xmlns.svg, "g");
                var g = this.nodes.main;
                g.setAttribute("id", this.getId());
                var line = this.nodes.axis = document.createElementNS(dojo.svg.xmlns.svg, "line");
                if (plane == "x") {
                        line.setAttribute("y1", coord);
                        line.setAttribute("y2", coord);
                        line.setAttribute("x1", area.left - stroke);
                        line.setAttribute("x2", area.right + stroke);
                        line.setAttribute("style", style);
                        var y = coord + textSize + 2;
                        if (this.showLines) {
                                g.appendChild(this.renderLines(plotArea, plot, plane, y));
                        }
                        if (this.showTicks) {
                                g.appendChild(this.renderTicks(plotArea, plot, plane, coord));
                        }
                        if (this.showLabels) {
                                g.appendChild(this.renderLabels(plotArea, plot, plane, y, textSize, "middle"));
                        }
                        if (this.showLabel && this.label) {
                                var x = plotArea.size.width / 2;
                                var text = document.createElementNS(dojo.svg.xmlns.svg, "text");
                                text.setAttribute("x", x);
                                text.setAttribute("y", (coord + (textSize * 2) + (textSize / 2)));
                                text.setAttribute("style", "text-anchor:middle;font-family:sans-serif;font-weight:bold;font-size:" + (textSize + 2) + "px;fill:#000;");
                                text.appendChild(document.createTextNode(this.label));
                                g.appendChild(text);
                        }
                } else {
                        line.setAttribute("x1", coord);
                        line.setAttribute("x2", coord);
                        line.setAttribute("y1", area.top);
                        line.setAttribute("y2", area.bottom);
                        line.setAttribute("style", style);
                        var isMax = this.origin == drawAgainst.range.upper;
                        var x = coord + (isMax ? 4 : -4);
                        var anchor = isMax ? "start" : "end";
                        if (this.showLines) {
                                g.appendChild(this.renderLines(plotArea, plot, plane, x));
                        }
                        if (this.showTicks) {
                                g.appendChild(this.renderTicks(plotArea, plot, plane, coord));
                        }
                        if (this.showLabels) {
                                g.appendChild(this.renderLabels(plotArea, plot, plane, x, textSize, anchor));
                        }
                        if (this.showLabel && this.label) {
                                var x = isMax ? (coord + (textSize * 2) + (textSize / 2)) : (coord - (textSize * 4));
                                var y = plotArea.size.height / 2;
                                var text = document.createElementNS(dojo.svg.xmlns.svg, "text");
                                text.setAttribute("x", x);
                                text.setAttribute("y", y);
                                text.setAttribute("transform", "rotate(90, " + x + ", " + y + ")");
                                text.setAttribute("style", "text-anchor:middle;font-family:sans-serif;font-weight:bold;font-size:" + (textSize + 2) + "px;fill:#000;");
                                text.appendChild(document.createTextNode(this.label));
                                g.appendChild(text);
                        }
                }
                g.appendChild(line);
                return g;
        }});
}