AbstractValueIndicator: prevent label editing when setEditable(false)

- Affects XValueIndicator, YValueIndicator, YWatchValueIndicator

chartfx-chart/src/main/java/io/fair_acc/chartfx/plugins/AbstractValueIndicator.java

@@ -103,7 +103,7 @@ protected AbstractValueIndicator(Axis axis, final String text) {
         });
         // mouse handler to edit the indicator on right click
         label.setOnMouseClicked(evt -> {
-            if (evt.getButton().equals(MouseButton.SECONDARY)) {
+            if (evt.getButton().equals(MouseButton.SECONDARY) && isEditable()) {
                 label.setVisible(false);
                 getChartChildren().add(labelEdit);
                 labelEdit.requestFocus();

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

@@ -0,0 +1,77 @@
+package io.fair_acc.chartfx.plugins;
+
+import static org.hamcrest.MatcherAssert.assertThat;
+import static org.hamcrest.Matchers.hasSize;
+
+import java.util.Set;
+
+import org.junit.jupiter.api.Test;
+import org.junit.jupiter.api.extension.ExtendWith;
+import org.testfx.api.FxRobot;
+import org.testfx.framework.junit5.ApplicationExtension;
+import org.testfx.framework.junit5.Start;
+
+import io.fair_acc.chartfx.XYChart;
+import io.fair_acc.dataset.DataSet;
+import io.fair_acc.dataset.testdata.spi.CosineFunction;
+import javafx.scene.Node;
+import javafx.scene.Scene;
+import javafx.scene.input.MouseButton;
+import javafx.stage.Stage;
+
+@ExtendWith(ApplicationExtension.class)
+public class XValueIndicatorTest {
+
+    private XYChart chart;
+    private XValueIndicator indicator;
+
+    @Start
+    public void start(Stage stage) {
+        chart = new XYChart();
+        indicator = new XValueIndicator(chart.getXAxis(), 5, "POI");
+        indicator.setLabelPosition(0.5);
+        chart.getPlugins().add(indicator);
+        chart.setPrefWidth(400);
+        chart.setPrefHeight(300);
+
+        DataSet ds = new CosineFunction("Cosine", 30);
+        chart.getDatasets().add(ds);
+
+        Scene scene = new Scene(chart, 400, 300);
+        stage.setScene(scene);
+        stage.show();
+    }
+
+    @Test
+    void testThatIndicatorEditLabelTextFieldIsShownWhenEditable(final FxRobot fxRobot) { // NOPMD JUnitTestsShouldIncludeAssert
+        fxRobot.interrupt();
+
+        assertThat(lookupIndicatorTextFields(fxRobot), hasSize(0));
+        fxRobot.moveTo(lookupFirstIndicatorLabel(fxRobot));
+        fxRobot.clickOn(MouseButton.SECONDARY);
+
+        assertThat(lookupIndicatorTextFields(fxRobot), hasSize(1));
+    }
+
+    @Test
+    void testThatIndicatorNoEditLabelTextFieldIsShownWhenNotEditable(final FxRobot fxRobot) { // NOPMD JUnitTestsShouldIncludeAssert
+        fxRobot.interrupt();
+
+        indicator.setEditable(false);
+
+        assertThat(lookupIndicatorTextFields(fxRobot), hasSize(0));
+        fxRobot.moveTo(lookupFirstIndicatorLabel(fxRobot));
+        fxRobot.clickOn(MouseButton.SECONDARY);
+
+        assertThat(lookupIndicatorTextFields(fxRobot), hasSize(0));
+    }
+
+    private Node lookupFirstIndicatorLabel(final FxRobot fxRobot) {
+        return fxRobot.from(chart).lookup("." + AbstractSingleValueIndicator.STYLE_CLASS_LABEL).query();
+    }
+
+    private Set<Node> lookupIndicatorTextFields(final FxRobot fxRobot) {
+        return fxRobot.from(chart).lookup(".text-field").queryAll();
+    }
+
+}