xy-output-component: check line chart reference before accessing it

Signed-off-by: Bernd Hufmann <Bernd.Hufmann@ericsson.com>
eclipse-cdt-cloud · Apr 9, 2020 · 5b947ba · 5b947ba
1 parent 7957c69
commit 5b947ba
Showing 1 changed file with 4 additions and 2 deletions.
diff --git a/viewer-prototype/src/browser/trace-viewer/components/xy-output-component.tsx b/viewer-prototype/src/browser/trace-viewer/components/xy-output-component.tsx
@@ -56,7 +56,9 @@ export class XYOutputComponent extends AbstractTreeOutputComponent<AbstractOutpu
         if (prevProps.style.chartWidth !== this.props.style.chartWidth) {
             this.updateXY();
         }
-        this.lineChartRef.current.chartInstance.render();
+        if (this.lineChartRef.current) {
+            this.lineChartRef.current.chartInstance.render();
+        }
     }
 
     renderTree(): React.ReactNode {
@@ -265,4 +267,4 @@ export class XYOutputComponent extends AbstractTreeOutputComponent<AbstractOutpu
         }
         return colors[colorIndex];
     }
-}
+}