add graph to display stocks

src/main/java/edu/ntnu/idi/idatt2003/gruppe42/View/Views/Components/StockGraph.java

@@ -0,0 +1,60 @@
+package edu.ntnu.idi.idatt2003.gruppe42.View.Views.Components;
+
+import edu.ntnu.idi.idatt2003.gruppe42.Model.Stock;
+import javafx.scene.chart.LineChart;
+import javafx.scene.chart.NumberAxis;
+import javafx.scene.chart.XYChart;
+import javafx.scene.layout.VBox;
+
+import java.math.BigDecimal;
+import java.util.List;
+
+public class StockGraph extends VBox {
+
+  private final LineChart<Number, Number> lineChart;
+  private final NumberAxis xAxis;
+  private final NumberAxis yAxis;
+
+  public StockGraph(double width, double height) {
+    xAxis = new NumberAxis();
+    xAxis.setLabel("Time");
+
+    yAxis = new NumberAxis();
+    yAxis.setLabel("Price");
+
+    lineChart = new LineChart<>(xAxis, yAxis);
+    lineChart.setPrefSize(width, height);
+
+    getChildren().add(lineChart);
+  }
+
+  public boolean display(Stock stock, int resolution) {
+    if (stock == null) {
+      return false;
+    }
+
+    lineChart.getData().clear();
+
+    XYChart.Series<Number, Number> series = new XYChart.Series<>();
+    series.setName(stock.getCompany());
+
+    List<BigDecimal> history = stock.getHistoricalPrices();
+
+    if (history.size() < resolution) {
+      return false;
+    }
+
+    List<BigDecimal> latestHistory = history.subList(Math.max(history.size() - resolution, 0), history.size());
+
+    for (int i = 0; i < resolution; i++) {
+      series.getData().add(new XYChart.Data<>(i, latestHistory.get(i)));
+    }
+
+    lineChart.getData().add(series);
+    return true;
+  }
+
+  public void clear() {
+    lineChart.getData().clear();
+  }
+}