feat(selection): add context menu handler closes #478

src/container/ReactFlow/index.tsx

@@ -57,6 +57,7 @@ export interface ReactFlowProps extends Omit<HTMLAttributes<HTMLDivElement>, 'on
   onSelectionDragStart?: (event: MouseEvent, nodes: Node[]) => void;
   onSelectionDrag?: (event: MouseEvent, nodes: Node[]) => void;
   onSelectionDragStop?: (event: MouseEvent, nodes: Node[]) => void;
+  onSelectionContextMenu?: (event: MouseEvent, nodes: Node[]) => void;
   onPaneScroll?: (event?: WheelEvent) => void;
   onPaneClick?: (event: MouseEvent) => void;
   onPaneContextMenu?: (event: MouseEvent) => void;
@@ -112,6 +113,7 @@ const ReactFlow = ({
   onSelectionDragStart,
   onSelectionDrag,
   onSelectionDragStop,
+  onSelectionContextMenu,
   connectionLineType,
   connectionLineStyle,
   deleteKeyCode,
@@ -191,6 +193,7 @@ const ReactFlow = ({
           onSelectionDragStart={onSelectionDragStart}
           onSelectionDrag={onSelectionDrag}
           onSelectionDragStop={onSelectionDragStop}
+          onSelectionContextMenu={onSelectionContextMenu}
         />
         {onSelectionChange && <SelectionListener onSelectionChange={onSelectionChange} />}
         {children}