BP: AbstractRendererXY: Update axesList of AbstractRenderer when changed (#677)

chartfx-chart/src/main/java/io/fair_acc/chartfx/renderer/spi/AbstractRendererXY.java

@@ -74,6 +74,9 @@ public void render() {
 
     @Override
     public void updateAxes() {
+        final var xAxisBefore = xAxis;
+        final var yAxisBefore = yAxis;
+
         // Default to explicitly set axes
         xAxis = ensureAxisInChart(getFirstAxis(Orientation.HORIZONTAL));
         yAxis = ensureAxisInChart(getFirstAxis(Orientation.VERTICAL));
@@ -95,6 +98,10 @@ public void updateAxes() {
         if (yAxis instanceof CategoryAxis axis && !getDatasets().isEmpty()) {
             axis.updateCategories(getDatasets().get(0));
         }
+
+        if (xAxisBefore != xAxis || yAxisBefore != yAxis) {
+            getAxes().setAll(xAxis, yAxis);
+        }
     }
 
     protected Axis ensureAxisInChart(Axis axis) {

chartfx-chart/src/test/java/io/fair_acc/chartfx/plugins/DataPointTooltipAxisFromChartTest.java

@@ -0,0 +1,81 @@
+package io.fair_acc.chartfx.plugins;
+
+import static io.fair_acc.dataset.DataSet.DIM_X;
+import static io.fair_acc.dataset.DataSet.DIM_Y;
+import static org.testfx.util.NodeQueryUtils.hasText;
+
+import org.junit.jupiter.api.Test;
+import org.junit.jupiter.api.extension.ExtendWith;
+import org.testfx.api.FxAssert;
+import org.testfx.api.FxRobot;
+import org.testfx.framework.junit5.ApplicationExtension;
+import org.testfx.framework.junit5.Start;
+import org.testfx.util.DebugUtils;
+
+import io.fair_acc.chartfx.XYChart;
+import io.fair_acc.chartfx.axes.Axis;
+import io.fair_acc.chartfx.axes.spi.DefaultNumericAxis;
+import io.fair_acc.chartfx.renderer.spi.ErrorDataSetRenderer;
+import io.fair_acc.chartfx.ui.geometry.Side;
+import io.fair_acc.dataset.DataSet;
+import io.fair_acc.dataset.testdata.spi.CosineFunction;
+import javafx.geometry.Point2D;
+import javafx.scene.Scene;
+import javafx.stage.Stage;
+
+/**
+ * Test the DataPointTooltip plugin in the case that axis were only added to the chart and not the renderers.
+ *
+ * @author Benjamin Peter
+ */
+@ExtendWith(ApplicationExtension.class)
+class DataPointTooltipAxisFromChartTest {
+
+    private XYChart chart;
+    private CosineFunction ds;
+    private Axis xAxis;
+    private Axis yAxis;
+
+    @Start
+    public void start(Stage stage) {
+        chart = new XYChart();
+        chart.getPlugins().add(new DataPointTooltip());
+        chart.setPrefWidth(400);
+        chart.setPrefHeight(300);
+
+        xAxis = new DefaultNumericAxis("xAxis", "t");
+        xAxis.setSide(Side.BOTTOM);
+        yAxis = new DefaultNumericAxis("yAxis", "m");
+        yAxis.setSide(Side.LEFT);
+        chart.getAxes().setAll(xAxis, yAxis);
+
+        final ErrorDataSetRenderer renderer = new ErrorDataSetRenderer();
+
+        ds = new CosineFunction("Cosine", 50);
+        renderer.getDatasets().add(ds);
+
+        chart.getRenderers().setAll(renderer);
+        Scene scene = new Scene(chart, 400, 300);
+        stage.setScene(scene);
+        stage.show();
+    }
+
+    @Test
+    void testThatTooltipIsShown(final FxRobot fxRobot) { // NOPMD JUnitTestsShouldIncludeAssert
+        fxRobot.interrupt();
+
+        fxRobot.moveTo(getPointOnDataSet(xAxis, yAxis, ds, 36)).moveBy(1, 0);
+        FxAssert.verifyThat(
+                "." + DataPointTooltip.STYLE_CLASS_LABEL,
+                hasText("'Cosine [36]'" + System.lineSeparator() + "36.0, 0.3090169943749491"),
+                DebugUtils.informedErrorMessage(fxRobot));
+    }
+
+    private Point2D getPointOnDataSet(final Axis xAxis, final Axis yAxis, final DataSet ds, final int index) {
+        return chart.getCanvas()
+                .localToScreen(
+                        new Point2D(xAxis.getDisplayPosition(ds.get(DIM_X, index)),
+                                yAxis.getDisplayPosition(ds.get(DIM_Y, index))));
+    }
+
+}