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-/**
- * @license
- * Copyright 2011 Dan Vanderkam (danvdk@gmail.com)
- * MIT-licensed (http://opensource.org/licenses/MIT)
- */
-
-/**
- * @fileoverview DygraphOptions is responsible for parsing and returning information about options.
- *
- * Still tightly coupled to Dygraphs, we could remove some of that, you know.
- */
-
-var DygraphOptions = (function() {
-
-/*jshint sub:true */
-/*global Dygraph:false */
-"use strict";
-
-/*
- * Interesting member variables: (REMOVING THIS LIST AS I CLOSURIZE)
- * global_ - global attributes (common among all graphs, AIUI)
- * user - attributes set by the user
- * series_ - { seriesName -> { idx, yAxis, options }}
- */
-
-/**
- * This parses attributes into an object that can be easily queried.
- *
- * It doesn't necessarily mean that all options are available, specifically
- * if labels are not yet available, since those drive details of the per-series
- * and per-axis options.
- *
- * @param {Dygraph} dygraph The chart to which these options belong.
- * @constructor
- */
-var DygraphOptions = function(dygraph) {
- /**
- * The dygraph.
- * @type {!Dygraph}
- */
- this.dygraph_ = dygraph;
-
- /**
- * Array of axis index to { series : [ series names ] , options : { axis-specific options. }
- * @type {Array.<{series : Array.<string>, options : Object}>} @private
- */
- this.yAxes_ = [];
-
- /**
- * Contains x-axis specific options, which are stored in the options key.
- * This matches the yAxes_ object structure (by being a dictionary with an
- * options element) allowing for shared code.
- * @type {options: Object} @private
- */
- this.xAxis_ = {};
- this.series_ = {};
-
- // Once these two objects are initialized, you can call get();
- this.global_ = this.dygraph_.attrs_;
- this.user_ = this.dygraph_.user_attrs_ || {};
-
- /**
- * A list of series in columnar order.
- * @type {Array.<string>}
- */
- this.labels_ = [];
-
- this.highlightSeries_ = this.get("highlightSeriesOpts") || {};
- this.reparseSeries();
-};
-
-/**
- * Not optimal, but does the trick when you're only using two axes.
- * If we move to more axes, this can just become a function.
- *
- * @type {Object.<number>}
- * @private
- */
-DygraphOptions.AXIS_STRING_MAPPINGS_ = {
- 'y' : 0,
- 'Y' : 0,
- 'y1' : 0,
- 'Y1' : 0,
- 'y2' : 1,
- 'Y2' : 1
-};
-
-/**
- * @param {string|number} axis
- * @private
- */
-DygraphOptions.axisToIndex_ = function(axis) {
- if (typeof(axis) == "string") {
- if (DygraphOptions.AXIS_STRING_MAPPINGS_.hasOwnProperty(axis)) {
- return DygraphOptions.AXIS_STRING_MAPPINGS_[axis];
- }
- throw "Unknown axis : " + axis;
- }
- if (typeof(axis) == "number") {
- if (axis === 0 || axis === 1) {
- return axis;
- }
- throw "Dygraphs only supports two y-axes, indexed from 0-1.";
- }
- if (axis) {
- throw "Unknown axis : " + axis;
- }
- // No axis specification means axis 0.
- return 0;
-};
-
-/**
- * Reparses options that are all related to series. This typically occurs when
- * options are either updated, or source data has been made available.
- *
- * TODO(konigsberg): The method name is kind of weak; fix.
- */
-DygraphOptions.prototype.reparseSeries = function() {
- var labels = this.get("labels");
- if (!labels) {
- return; // -- can't do more for now, will parse after getting the labels.
- }
-
- this.labels_ = labels.slice(1);
-
- this.yAxes_ = [ { series : [], options : {}} ]; // Always one axis at least.
- this.xAxis_ = { options : {} };
- this.series_ = {};
-
- // Traditionally, per-series options were specified right up there with the options. For instance
- // {
- // labels: [ "X", "foo", "bar" ],
- // pointSize: 3,
- // foo : {}, // options for foo
- // bar : {} // options for bar
- // }
- //
- // Moving forward, series really should be specified in the series element, separating them.
- // like so:
- //
- // {
- // labels: [ "X", "foo", "bar" ],
- // pointSize: 3,
- // series : {
- // foo : {}, // options for foo
- // bar : {} // options for bar
- // }
- // }
- //
- // So, if series is found, it's expected to contain per-series data, otherwise we fall
- // back.
- var oldStyleSeries = !this.user_["series"];
-
- if (oldStyleSeries) {
- var axisId = 0; // 0-offset; there's always one.
- // Go through once, add all the series, and for those with {} axis options, add a new axis.
- for (var idx = 0; idx < this.labels_.length; idx++) {
- var seriesName = this.labels_[idx];
-
- var optionsForSeries = this.user_[seriesName] || {};
-
- var yAxis = 0;
- var axis = optionsForSeries["axis"];
- if (typeof(axis) == 'object') {
- yAxis = ++axisId;
- this.yAxes_[yAxis] = { series : [ seriesName ], options : axis };
- }
-
- // Associate series without axis options with axis 0.
- if (!axis) { // undefined
- this.yAxes_[0].series.push(seriesName);
- }
-
- this.series_[seriesName] = { idx: idx, yAxis: yAxis, options : optionsForSeries };
- }
-
- // Go through one more time and assign series to an axis defined by another
- // series, e.g. { 'Y1: { axis: {} }, 'Y2': { axis: 'Y1' } }
- for (var idx = 0; idx < this.labels_.length; idx++) {
- var seriesName = this.labels_[idx];
- var optionsForSeries = this.series_[seriesName]["options"];
- var axis = optionsForSeries["axis"];
-
- if (typeof(axis) == 'string') {
- if (!this.series_.hasOwnProperty(axis)) {
- Dygraph.error("Series " + seriesName + " wants to share a y-axis with " +
- "series " + axis + ", which does not define its own axis.");
- return;
- }
- var yAxis = this.series_[axis].yAxis;
- this.series_[seriesName].yAxis = yAxis;
- this.yAxes_[yAxis].series.push(seriesName);
- }
- }
- } else {
- for (var idx = 0; idx < this.labels_.length; idx++) {
- var seriesName = this.labels_[idx];
- var optionsForSeries = this.user_.series[seriesName] || {};
- var yAxis = DygraphOptions.axisToIndex_(optionsForSeries["axis"]);
-
- this.series_[seriesName] = {
- idx: idx,
- yAxis: yAxis,
- options : optionsForSeries };
-
- if (!this.yAxes_[yAxis]) {
- this.yAxes_[yAxis] = { series : [ seriesName ], options : {} };
- } else {
- this.yAxes_[yAxis].series.push(seriesName);
- }
- }
- }
-
- var axis_opts = this.user_["axes"] || {};
- Dygraph.update(this.yAxes_[0].options, axis_opts["y"] || {});
- if (this.yAxes_.length > 1) {
- Dygraph.update(this.yAxes_[1].options, axis_opts["y2"] || {});
- }
- Dygraph.update(this.xAxis_.options, axis_opts["x"] || {});
-};
-
-/**
- * Get a global value.
- *
- * @param {string} name the name of the option.
- */
-DygraphOptions.prototype.get = function(name) {
- var result = this.getGlobalUser_(name);
- if (result !== null) {
- return result;
- }
- return this.getGlobalDefault_(name);
-};
-
-DygraphOptions.prototype.getGlobalUser_ = function(name) {
- if (this.user_.hasOwnProperty(name)) {
- return this.user_[name];
- }
- return null;
-};
-
-DygraphOptions.prototype.getGlobalDefault_ = function(name) {
- if (this.global_.hasOwnProperty(name)) {
- return this.global_[name];
- }
- if (Dygraph.DEFAULT_ATTRS.hasOwnProperty(name)) {
- return Dygraph.DEFAULT_ATTRS[name];
- }
- return null;
-};
-
-/**
- * Get a value for a specific axis. If there is no specific value for the axis,
- * the global value is returned.
- *
- * @param {string} name the name of the option.
- * @param {string|number} axis the axis to search. Can be the string representation
- * ("y", "y2") or the axis number (0, 1).
- */
-DygraphOptions.prototype.getForAxis = function(name, axis) {
- var axisIdx;
- var axisString;
-
- // Since axis can be a number or a string, straighten everything out here.
- if (typeof(axis) == 'number') {
- axisIdx = axis;
- axisString = axisIdx === 0 ? "y" : "y2";
- } else {
- if (axis == "y1") { axis = "y"; } // Standardize on 'y'. Is this bad? I think so.
- if (axis == "y") {
- axisIdx = 0;
- } else if (axis == "y2") {
- axisIdx = 1;
- } else if (axis == "x") {
- axisIdx = -1; // simply a placeholder for below.
- } else {
- throw "Unknown axis " + axis;
- }
- axisString = axis;
- }
-
- var userAxis = (axisIdx == -1) ? this.xAxis_ : this.yAxes_[axisIdx];
-
- // Search the user-specified axis option first.
- if (userAxis) { // This condition could be removed if we always set up this.yAxes_ for y2.
- var axisOptions = userAxis.options;
- if (axisOptions.hasOwnProperty(name)) {
- return axisOptions[name];
- }
- }
-
- // User-specified global options second.
- var result = this.getGlobalUser_(name);
- if (result !== null) {
- return result;
- }
-
- // Default axis options third.
- var defaultAxisOptions = Dygraph.DEFAULT_ATTRS.axes[axisString];
- if (defaultAxisOptions.hasOwnProperty(name)) {
- return defaultAxisOptions[name];
- }
-
- // Default global options last.
- return this.getGlobalDefault_(name);
-};
-
-/**
- * Get a value for a specific series. If there is no specific value for the series,
- * the value for the axis is returned (and afterwards, the global value.)
- *
- * @param {string} name the name of the option.
- * @param {string} series the series to search.
- */
-DygraphOptions.prototype.getForSeries = function(name, series) {
- // Honors indexes as series.
- if (series === this.dygraph_.getHighlightSeries()) {
- if (this.highlightSeries_.hasOwnProperty(name)) {
- return this.highlightSeries_[name];
- }
- }
-
- if (!this.series_.hasOwnProperty(series)) {
- throw "Unknown series: " + series;
- }
-
- var seriesObj = this.series_[series];
- var seriesOptions = seriesObj["options"];
- if (seriesOptions.hasOwnProperty(name)) {
- return seriesOptions[name];
- }
-
- return this.getForAxis(name, seriesObj["yAxis"]);
-};
-
-/**
- * Returns the number of y-axes on the chart.
- * @return {number} the number of axes.
- */
-DygraphOptions.prototype.numAxes = function() {
- return this.yAxes_.length;
-};
-
-/**
- * Return the y-axis for a given series, specified by name.
- */
-DygraphOptions.prototype.axisForSeries = function(series) {
- return this.series_[series].yAxis;
-};
-
-/**
- * Returns the options for the specified axis.
- */
-// TODO(konigsberg): this is y-axis specific. Support the x axis.
-DygraphOptions.prototype.axisOptions = function(yAxis) {
- return this.yAxes_[yAxis].options;
-};
-
-/**
- * Return the series associated with an axis.
- */
-DygraphOptions.prototype.seriesForAxis = function(yAxis) {
- return this.yAxes_[yAxis].series;
-};
-
-/**
- * Return the list of all series, in their columnar order.
- */
-DygraphOptions.prototype.seriesNames = function() {
- return this.labels_;
-};
-
-/* Are we using this? */
-/**
- * Return the index of the specified series.
- * @param {string} series the series name.
- */
-DygraphOptions.prototype.indexOfSeries = function(series) {
- return this.series_[series].idx;
-};
-
-return DygraphOptions;
-
-})();