+Dygraph.DEFAULT_ROLL_PERIOD = 1;
+Dygraph.DEFAULT_WIDTH = 480;
+Dygraph.DEFAULT_HEIGHT = 320;
+
+Dygraph.ANIMATION_STEPS = 10;
+Dygraph.ANIMATION_DURATION = 200;
+
+// These are defined before DEFAULT_ATTRS so that it can refer to them.
+/**
+ * @private
+ * Return a string version of a number. This respects the digitsAfterDecimal
+ * and maxNumberWidth options.
+ * @param {Number} x The number to be formatted
+ * @param {Dygraph} opts An options view
+ * @param {String} name The name of the point's data series
+ * @param {Dygraph} g The dygraph object
+ */
+Dygraph.numberValueFormatter = function(x, opts, pt, g) {
+ var sigFigs = opts('sigFigs');
+
+ if (sigFigs !== null) {
+ // User has opted for a fixed number of significant figures.
+ return Dygraph.floatFormat(x, sigFigs);
+ }
+
+ var digits = opts('digitsAfterDecimal');
+ var maxNumberWidth = opts('maxNumberWidth');
+
+ // switch to scientific notation if we underflow or overflow fixed display.
+ if (x !== 0.0 &&
+ (Math.abs(x) >= Math.pow(10, maxNumberWidth) ||
+ Math.abs(x) < Math.pow(10, -digits))) {
+ return x.toExponential(digits);
+ } else {
+ return '' + Dygraph.round_(x, digits);
+ }
+};
+
+/**
+ * variant for use as an axisLabelFormatter.
+ * @private
+ */
+Dygraph.numberAxisLabelFormatter = function(x, granularity, opts, g) {
+ return Dygraph.numberValueFormatter(x, opts, g);
+};
+
+/**
+ * Convert a JS date (millis since epoch) to YYYY/MM/DD
+ * @param {Number} date The JavaScript date (ms since epoch)
+ * @return {String} A date of the form "YYYY/MM/DD"
+ * @private
+ */
+Dygraph.dateString_ = function(date) {
+ var zeropad = Dygraph.zeropad;
+ var d = new Date(date);
+
+ // Get the year:
+ var year = "" + d.getFullYear();
+ // Get a 0 padded month string
+ var month = zeropad(d.getMonth() + 1); //months are 0-offset, sigh
+ // Get a 0 padded day string
+ var day = zeropad(d.getDate());
+
+ var ret = "";
+ var frac = d.getHours() * 3600 + d.getMinutes() * 60 + d.getSeconds();
+ if (frac) ret = " " + Dygraph.hmsString_(date);
+
+ return year + "/" + month + "/" + day + ret;
+};
+
+/**
+ * Convert a JS date to a string appropriate to display on an axis that
+ * is displaying values at the stated granularity.
+ * @param {Date} date The date to format
+ * @param {Number} granularity One of the Dygraph granularity constants
+ * @return {String} The formatted date
+ * @private
+ */
+Dygraph.dateAxisFormatter = function(date, granularity) {
+ if (granularity >= Dygraph.DECADAL) {
+ return date.strftime('%Y');
+ } else if (granularity >= Dygraph.MONTHLY) {
+ return date.strftime('%b %y');
+ } else {
+ var frac = date.getHours() * 3600 + date.getMinutes() * 60 + date.getSeconds() + date.getMilliseconds();
+ if (frac == 0 || granularity >= Dygraph.DAILY) {
+ return new Date(date.getTime() + 3600*1000).strftime('%d%b');
+ } else {
+ return Dygraph.hmsString_(date.getTime());
+ }
+ }
+};
+
+
+// Default attribute values.
+Dygraph.DEFAULT_ATTRS = {
+ highlightCircleSize: 3,
+
+ labelsDivWidth: 250,
+ labelsDivStyles: {
+ // TODO(danvk): move defaults from createStatusMessage_ here.
+ },
+ labelsSeparateLines: false,
+ labelsShowZeroValues: true,
+ labelsKMB: false,
+ labelsKMG2: false,
+ showLabelsOnHighlight: true,
+
+ digitsAfterDecimal: 2,
+ maxNumberWidth: 6,
+ sigFigs: null,
+
+ strokeWidth: 1.0,
+
+ axisTickSize: 3,
+ axisLabelFontSize: 14,
+ xAxisLabelWidth: 50,
+ yAxisLabelWidth: 50,
+ rightGap: 5,
+
+ showRoller: false,
+ xValueParser: Dygraph.dateParser,
+
+ delimiter: ',',
+
+ sigma: 2.0,
+ errorBars: false,
+ fractions: false,
+ wilsonInterval: true, // only relevant if fractions is true
+ customBars: false,
+ fillGraph: false,
+ fillAlpha: 0.15,
+ connectSeparatedPoints: false,
+
+ stackedGraph: false,
+ hideOverlayOnMouseOut: true,
+
+ // TODO(danvk): support 'onmouseover' and 'never', and remove synonyms.
+ legend: 'onmouseover', // the only relevant value at the moment is 'always'.
+
+ stepPlot: false,
+ avoidMinZero: false,
+
+ // Sizes of the various chart labels.
+ titleHeight: 28,
+ xLabelHeight: 18,
+ yLabelWidth: 18,
+
+ drawXAxis: true,
+ drawYAxis: true,
+ axisLineColor: "black",
+ axisLineWidth: 0.3,
+ gridLineWidth: 0.3,
+ axisLabelColor: "black",
+ axisLabelFont: "Arial", // TODO(danvk): is this implemented?
+ axisLabelWidth: 50,
+ drawYGrid: true,
+ drawXGrid: true,
+ gridLineColor: "rgb(128,128,128)",
+
+ interactionModel: null, // will be set to Dygraph.Interaction.defaultModel
+ animatedZooms: false, // (for now)
+
+ // Range selector options
+ showRangeSelector: false,
+ rangeSelectorHeight: 40,
+ rangeSelectorPlotStrokeColor: "#808FAB",
+ rangeSelectorPlotFillColor: "#A7B1C4",
+
+ // per-axis options
+ axes: {
+ x: {
+ pixelsPerLabel: 60,
+ axisLabelFormatter: Dygraph.dateAxisFormatter,
+ valueFormatter: Dygraph.dateString_,
+ ticker: null // will be set in dygraph-tickers.js
+ },
+ y: {
+ pixelsPerLabel: 30,
+ valueFormatter: Dygraph.numberValueFormatter,
+ axisLabelFormatter: Dygraph.numberAxisLabelFormatter,
+ ticker: null // will be set in dygraph-tickers.js
+ },
+ y2: {
+ pixelsPerLabel: 30,
+ valueFormatter: Dygraph.numberValueFormatter,
+ axisLabelFormatter: Dygraph.numberAxisLabelFormatter,
+ ticker: null // will be set in dygraph-tickers.js
+ }
+ }
+};
+
+// Directions for panning and zooming. Use bit operations when combined
+// values are possible.
+Dygraph.HORIZONTAL = 1;
+Dygraph.VERTICAL = 2;
+
+// Used for initializing annotation CSS rules only once.
+Dygraph.addedAnnotationCSS = false;
+
+Dygraph.prototype.__old_init__ = function(div, file, labels, attrs) {
+ // Labels is no longer a constructor parameter, since it's typically set
+ // directly from the data source. It also conains a name for the x-axis,
+ // which the previous constructor form did not.
+ if (labels != null) {
+ var new_labels = ["Date"];
+ for (var i = 0; i < labels.length; i++) new_labels.push(labels[i]);
+ Dygraph.update(attrs, { 'labels': new_labels });
+ }
+ this.__init__(div, file, attrs);
+};