/**
* Construct a new CandleStickChart with the given axis.
*
* @param title The chart title
* @param xAxis The x axis to use
* @param yAxis The y axis to use
* @param bars The bars to display on the chart
* @param maxBarsToDisplay The maximum number of bars to display on the chart.
*/
public CandleStickChart(
String title,
CategoryAxis xAxis,
NumberAxis yAxis,
List<BarData> bars,
int maxBarsToDisplay) {
super(xAxis, yAxis);
this.xAxis = xAxis;
this.yAxis = yAxis;
this.maxBarsToDisplay = maxBarsToDisplay;
yAxis.autoRangingProperty().set(true);
yAxis.forceZeroInRangeProperty().setValue(Boolean.FALSE);
setTitle(title);
setAnimated(true);
getStylesheets()
.add(getClass().getResource("/styles/CandleStickChartStyles.css").toExternalForm());
xAxis.setAnimated(true);
yAxis.setAnimated(true);
verticalGridLinesVisibleProperty().set(false);
XYChart.Series<String, Number> series = new XYChart.Series<>();
List<BarData> sublist = getSubList(bars, maxBarsToDisplay);
for (BarData bar : sublist) {
String label = "";
label = sdf.format(bar.getDateTime().getTime());
series.getData().add(new XYChart.Data<>(label, bar.getOpen(), bar));
logger.log(Level.INFO, "Adding bar with date/time: {0}", bar.getDateTime().getTime());
logger.log(Level.INFO, "Adding bar with price: {0}", bar.getOpen());
}
dataSeries = FXCollections.observableArrayList(series);
setData(dataSeries);
lastBar = sublist.get(sublist.size() - 1);
}
/**
* Appends a new bar on to the end of the chart.
*
* @param bar The bar to append to the chart
*/
public void addBar(BarData bar) {
if (dataSeries.get(0).getData().size() >= maxBarsToDisplay) {
dataSeries.get(0).getData().remove(0);
}
int datalength = dataSeries.get(0).getData().size();
dataSeries.get(0).getData().get(datalength - 1).setYValue(bar.getOpen());
dataSeries.get(0).getData().get(datalength - 1).setExtraValue(bar);
String label = sdf.format(bar.getDateTime().getTime());
logger.log(Level.INFO, "Adding bar with actual time: {0}", bar.getDateTime().getTime());
logger.log(Level.INFO, "Adding bar with formated time: {0}", label);
lastBar =
new BarData(
bar.getDateTime(), bar.getClose(), bar.getClose(), bar.getClose(), bar.getClose(), 0);
Data<String, Number> data = new XYChart.Data<>(label, lastBar.getOpen(), lastBar);
dataSeries.get(0).getData().add(data);
}
/**
* Update the "Last" price of the most recent bar
*
* @param price The Last price of the most recent bar.
*/
public void updateLast(double price) {
if (lastBar != null) {
lastBar.update(price);
logger.log(
Level.INFO, "Updating last bar with date/time: {0}", lastBar.getDateTime().getTime());
int datalength = dataSeries.get(0).getData().size();
dataSeries.get(0).getData().get(datalength - 1).setYValue(lastBar.getOpen());
dataSeries.get(0).getData().get(datalength - 1).setExtraValue(lastBar);
logger.log(
Level.INFO,
"Updating last bar with formatteddate/time: {0}",
dataSeries.get(0).getData().get(datalength - 1).getXValue());
}
}
