feat(props): add onNodesDelete and onEdgesDelete handler

example/src/Overview/index.tsx

@@ -43,6 +43,8 @@ const onEdgeMouseEnter = (_: MouseEvent, edge: Edge) => console.log('edge mouse
 const onEdgeMouseMove = (_: MouseEvent, edge: Edge) => console.log('edge mouse move', edge);
 const onEdgeMouseLeave = (_: MouseEvent, edge: Edge) => console.log('edge mouse leave', edge);
 const onEdgeDoubleClick = (_: MouseEvent, edge: Edge) => console.log('edge double click', edge);
+const onNodesDelete = (nodes: Node[]) => console.log('nodes delete', nodes);
+const onEdgesDelete = (edges: Edge[]) => console.log('edges delete', edges);
 
 const initialNodes: Node[] = [
   {
@@ -196,6 +198,8 @@ const OverviewFlow = () => {
       fitViewOptions={{ padding: 0.2 }}
       attributionPosition="top-right"
       maxZoom={Infinity}
+      onNodesDelete={onNodesDelete}
+      onEdgesDelete={onEdgesDelete}
     >
       <MiniMap nodeStrokeColor={nodeStrokeColor} nodeColor={nodeColor} nodeBorderRadius={2} />
       <Controls />

src/components/StoreUpdater/index.tsx

@@ -45,6 +45,8 @@ interface StoreUpdaterProps {
   defaultEdgeOptions?: DefaultEdgeOptions;
   fitView?: boolean;
   fitViewOptions?: FitViewOptions;
+  onNodesDelete?: (nodes: Node[]) => void;
+  onEdgesDelete?: (edges: Edge[]) => void;
 }
 
 const selector = (s: ReactFlowState) => ({
@@ -100,6 +102,8 @@ const StoreUpdater = ({
   defaultEdgeOptions,
   fitView,
   fitViewOptions,
+  onNodesDelete,
+  onEdgesDelete,
 }: StoreUpdaterProps) => {
   const {
     setNodes,
@@ -137,6 +141,8 @@ const StoreUpdater = ({
   useDirectStoreUpdater('connectOnClick', connectOnClick, store.setState);
   useDirectStoreUpdater('fitViewOnInit', fitView, store.setState);
   useDirectStoreUpdater('fitViewOnInitOptions', fitViewOptions, store.setState);
+  useDirectStoreUpdater('onNodesDelete', onNodesDelete, store.setState);
+  useDirectStoreUpdater('onEdgesDelete', onEdgesDelete, store.setState);
 
   useStoreUpdater<Node[]>(nodes, setNodes);
   useStoreUpdater<Edge[]>(edges, setEdges);

src/container/ReactFlow/index.tsx

@@ -62,6 +62,8 @@ const ReactFlow = forwardRef<ReactFlowRefType, ReactFlowProps>(
       onNodeDragStart,
       onNodeDrag,
       onNodeDragStop,
+      onNodesDelete,
+      onEdgesDelete,
       onSelectionChange,
       onSelectionDragStart,
       onSelectionDrag,
@@ -214,6 +216,8 @@ const ReactFlow = forwardRef<ReactFlowRefType, ReactFlowProps>(
             defaultEdgeOptions={defaultEdgeOptions}
             fitView={fitView}
             fitViewOptions={fitViewOptions}
+            onNodesDelete={onNodesDelete}
+            onEdgesDelete={onEdgesDelete}
           />
           {onSelectionChange && <SelectionListener onSelectionChange={onSelectionChange} />}
           {children}

src/hooks/useGlobalKeyHandler.ts

@@ -25,7 +25,7 @@ export default ({ deleteKeyCode, multiSelectionKeyCode }: HookParams): void => {
   const multiSelectionKeyPressed = useKeyPress(multiSelectionKeyCode);
 
   useEffect(() => {
-    const { nodeInternals, edges, hasDefaultNodes, hasDefaultEdges } = store.getState();
+    const { nodeInternals, edges, hasDefaultNodes, hasDefaultEdges, onNodesDelete, onEdgesDelete } = store.getState();
     // @TODO: work with nodeInternals instead of converting it to an array
     const nodes = Array.from(nodeInternals).map(([_, node]) => node);
     const selectedNodes = nodes.filter((n) => n.selected);
@@ -33,7 +33,8 @@ export default ({ deleteKeyCode, multiSelectionKeyCode }: HookParams): void => {
 
     if (deleteKeyPressed && (selectedNodes || selectedEdges)) {
       const connectedEdges = getConnectedEdges(selectedNodes, edges);
-      const edgeIdsToRemove = [...selectedEdges, ...connectedEdges].map((e) => e.id);
+      const edgesToRemove = [...selectedEdges, ...connectedEdges];
+      const edgeIdsToRemove = edgesToRemove.map((e) => e.id);
 
       if (hasDefaultNodes) {
         selectedNodes.forEach((node) => {
@@ -48,6 +49,9 @@ export default ({ deleteKeyCode, multiSelectionKeyCode }: HookParams): void => {
         });
       }
 
+      onNodesDelete?.(selectedNodes);
+      onEdgesDelete?.(edgesToRemove);
+
       if (onNodesChange) {
         const nodeChanges: NodeChange[] = selectedNodes.map((n) => ({ id: n.id, type: 'remove' }));
         onNodesChange(nodeChanges);

src/types/component-props.ts

@@ -46,6 +46,8 @@ export interface ReactFlowProps extends HTMLAttributes<HTMLDivElement> {
   onNodeDragStart?: (event: ReactMouseEvent, node: Node) => void;
   onNodeDrag?: (event: ReactMouseEvent, node: Node) => void;
   onNodeDragStop?: (event: ReactMouseEvent, node: Node) => void;
+  onNodesDelete?: (nodes: Node[]) => void;
+  onEdgesDelete?: (edges: Edge[]) => void;
   onConnect?: OnConnect;
   onConnectStart?: OnConnectStart;
   onConnectStop?: OnConnectStop;

src/types/general.ts

@@ -164,6 +164,9 @@ export type ReactFlowStore = {
   fitViewOnInit: boolean;
   fitViewOnInitDone: boolean;
   fitViewOnInitOptions: FitViewOptions | undefined;
+
+  onNodesDelete?: (nodes: Node[]) => void;
+  onEdgesDelete?: (edges: Edge[]) => void;
 };
 
 export type ReactFlowActions = {