Fixed "Cannot read properties of undefined (reading 'toLowerCase')" (#…

…7421)
cvat-ai · Feb 1, 2024 · b539802 · b539802
1 parent e4aa63f
commit b539802
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diff --git a/changelog.d/20240201_123603_boris_fixed_exception.md b/changelog.d/20240201_123603_boris_fixed_exception.md
@@ -0,0 +1,4 @@
+### Fixed
+
+- Unhandled exception "Cannot read properties of undefined (reading 'toLowerCase')"
+  (<https://github.com/opencv/cvat/pull/7421>)
diff --git a/cvat-canvas/src/typescript/canvasView.ts b/cvat-canvas/src/typescript/canvasView.ts
@@ -1107,7 +1107,7 @@ export class CanvasViewImpl implements CanvasView, Listener {
     }
 
     private onShiftKeyDown = (e: KeyboardEvent): void => {
-        if (!e.repeat && e.code.toLowerCase().includes('shift')) {
+        if (!e.repeat && (e.code || '').toLowerCase().includes('shift')) {
             this.snapToAngleResize = consts.SNAP_TO_ANGLE_RESIZE_SHIFT;
             if (this.activeElement) {
                 const shape = this.svgShapes[this.activeElement.clientID];
@@ -1126,7 +1126,7 @@ export class CanvasViewImpl implements CanvasView, Listener {
     };
 
     private onShiftKeyUp = (e: KeyboardEvent): void => {
-        if (e.code.toLowerCase().includes('shift') && this.activeElement) {
+        if ((e.code || '').toLowerCase().includes('shift') && this.activeElement) {
             this.snapToAngleResize = consts.SNAP_TO_ANGLE_RESIZE_DEFAULT;
             if (this.activeElement) {
                 const shape = this.svgShapes[this.activeElement.clientID];