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YUI.add('series-ohlc', function (Y, NAME) {
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/**
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* Provides functionality for creating a ohlc series.
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*
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* @module charts
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* @submodule series-ohlc
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*/
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/**
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* The OHLCSeries class renders lines representing the open, high, low and close
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* values for a chart.
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*
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* @class OHLCSeries
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* @extends RangeSeries
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* @constructor
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* @param {Object} config (optional) Configuration parameters.
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* @submodule series-ohlc
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*/
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function OHLCSeries()
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{
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OHLCSeries.superclass.constructor.apply(this, arguments);
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}
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OHLCSeries.NAME = "ohlcSeries";
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OHLCSeries.ATTRS = {
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/**
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* Read-only attribute indicating the type of series.
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*
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* @attribute type
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* @type String
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* @readOnly
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* @default ohlc
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*/
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type: {
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value: "ohlc"
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},
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/**
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* The graphic in which drawings will be rendered.
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*
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* @attribute graphic
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* @type Graphic
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*/
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graphic: {
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lazyAdd: false,
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setter: function(val) {
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//woraround for Attribute order of operations bug
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if(!this.get("rendered")) {
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this.set("rendered", true);
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}
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this.set("upmarker", val.addShape({
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type: "path"
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}));
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this.set("downmarker", val.addShape({
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type: "path"
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}));
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return val;
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}
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},
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upmarker: {},
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downmarker: {}
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/**
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* Style properties used for drawing markers. This attribute is inherited from `RangeSeries`. Below are the default values:
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* <dl>
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* <dt>upmarker</dt><dd>Properties for a marker representing a period that closes higher than it opens.
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* <dl>
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* <dt>fill</dt><dd>A hash containing the following values:
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* <dl>
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* <dt>color</dt><dd>Color of the fill. The default value is "#00aa00".</dd>
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* </dd>
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* <dt>alpha</dt><dd>Number from 0 to 1 indicating the opacity of the marker fill. The default value is 1.</dd>
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* </dl>
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* </dd>
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* <dt>border</dt><dd>A hash containing the following values:
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* <dl>
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* <dt>color</dt><dd>Color of the border. The default value is "#000000".</dd>
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* <dt>alpha</dt><dd>Number from 0 to 1 indicating the opacity of the marker border. The default value is 1.</dd>
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* <dt>weight</dt><dd>Number indicating the width of the border. The default value is 0.</dd>
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* </dl>
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* </dd>
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* </dl>
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* </dd>
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* <dt>downmarker</dt><dd>Properties for a marker representing a period that opens higher than it closes.
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* <dl>
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* <dt>fill</dt><dd>A hash containing the following values:
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* <dl>
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* <dt>color</dt><dd>Color of the fill. The default value is "#aa0000".</dd>
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* </dd>
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* <dt>alpha</dt><dd>Number from 0 to 1 indicating the opacity of the marker fill. The default value is 1.</dd>
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* </dl>
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* </dd>
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* <dt>border</dt><dd>A hash containing the following values:
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* <dl>
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* <dt>color</dt><dd>Color of the border. The default value is "#000000".</dd>
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* <dt>alpha</dt><dd>Number from 0 to 1 indicating the opacity of the marker border. The default value is 1.</dd>
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* <dt>weight</dt><dd>Number indicating the width of the border. The default value is 0.</dd>
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* </dl>
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* </dd>
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* </dl>
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* </dd>
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* </dl>
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*
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* @attribute styles
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* @type Object
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*/
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};
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Y.extend(OHLCSeries, Y.RangeSeries, {
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/**
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* Draws markers for an OHLC series.
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*
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* @method
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* @param {Array} xcoords The xcoordinates to be plotted.
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* @param {Array} opencoords The coordinates representing the open values.
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* @param {Array} highcoords The coordinates representing the high values.
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* @param {Array} lowcoords The coordinates representing the low values.
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* @param {Array} closecoords The coordinates representing the close values.
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* @param {Number} len The number of x coordinates to plot.
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* @param {Number} width The width of each ohlc marker.
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* @param {Number} halfwidth Half the width of each ohlc marker.
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* @param {Object} styles The styles for the series.
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* @private
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*/
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_drawMarkers: function(xcoords, opencoords, highcoords, lowcoords, closecoords, len, width, halfwidth, styles)
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{
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var upmarker = this.get("upmarker"),
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downmarker = this.get("downmarker"),
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opencoord,
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highcoord,
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lowcoord,
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closecoord,
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left,
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right,
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leftPadding = styles.padding.left,
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marker,
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up,
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cx,
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i,
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height;
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upmarker.set(styles.upmarker);
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downmarker.set(styles.downmarker);
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upmarker.clear();
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downmarker.clear();
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for(i = 0; i < len; i = i + 1)
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{
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cx = xcoords[i] + leftPadding;
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left = cx - halfwidth;
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right = cx + halfwidth;
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opencoord = opencoords[i];
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highcoord = highcoords[i];
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lowcoord = lowcoords[i];
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closecoord = closecoords[i];
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up = opencoord > closecoord;
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height = lowcoord - highcoord;
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marker = up ? upmarker : downmarker;
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marker.moveTo(left, opencoord);
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marker.lineTo(cx, opencoord);
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marker.moveTo(cx, highcoord);
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marker.lineTo(cx, lowcoord);
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marker.moveTo(cx, closecoord);
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marker.lineTo(right, closecoord);
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}
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upmarker.end();
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downmarker.end();
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},
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/**
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* Toggles visibility
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*
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* @method _toggleVisible
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* @param {Boolean} visible indicates visibilitye
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* @private
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*/
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_toggleVisible: function(visible)
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{
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this.get("upmarker").set("visible", visible);
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this.get("downmarker").set("visible", visible);
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},
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/**
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* Destructor implementation for the CartesianSeries class. Calls destroy on all Graphic instances.
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*
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* @method destructor
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* @protected
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*/
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destructor: function()
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{
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var upmarker = this.get("upmarker"),
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downmarker = this.get("downmarker");
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if(upmarker)
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{
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upmarker.destroy();
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}
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if(downmarker)
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{
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downmarker.destroy();
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}
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},
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/**
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* Gets the default value for the `styles` attribute. Overrides
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* base implementation.
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*
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* @method _getDefaultStyles
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* @return Object
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* @private
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*/
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_getDefaultStyles: function()
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{
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var styles = {
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upmarker: {
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stroke: {
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color: "#00aa00",
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alpha: 1,
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weight: 1
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}
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},
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downmarker: {
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stroke: {
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color: "#aa0000",
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alpha: 1,
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weight: 1
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}
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}
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};
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return this._mergeStyles(styles, OHLCSeries.superclass._getDefaultStyles());
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}
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});
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Y.OHLCSeries = OHLCSeries;
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}, '3.18.1', {"requires": ["series-range"]});
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