Merge pull request #3919 from xyflow/fix/remeasure-nodes

Fix/remeasure nodes

examples/react/src/examples/CustomMiniMapNode/index.tsx

@@ -27,9 +27,9 @@ const buttonStyle: CSSProperties = {
   zIndex: 4,
 };
 
-const CustomMiniMapNode = ({ x, y, width, height, color }: MiniMapNodeProps) => (
+const CustomMiniMapNode = ({ x, y, width, height }: MiniMapNodeProps) => {
-  <circle cx={x} cy={y} r={Math.max(width, height) / 2} fill={color} />
+  return <circle cx={x} cy={y} r={Math.max(width, height) / 2} fill="#ffcc00" />;
-);
+};
 
 const CustomMiniMapNodeFlow = () => {
   const [nodes, setNodes, onNodesChange] = useNodesState<Node>([]);

examples/react/src/examples/Subflow/index.tsx

@@ -90,7 +90,7 @@ const initialNodes: Node[] = [
     data: { label: 'Node 5' },
     position: { x: 650, y: 250 },
     className: 'light',
-    style: { width: 400, height: 150 },
+    style: { width: 100, height: 100 },
     zIndex: 1000,
   },
   {
@@ -161,9 +161,12 @@ const Subflow = () => {
     setNodes((nds) => {
       return nds.map((n) => {
         if (!n.parentNode) {
-          n.position = {
+          return {
-            x: Math.random() * 400,
+            ...n,
-            y: Math.random() * 400,
+            position: {
+              x: Math.random() * 400,
+              y: Math.random() * 400,
+            },
           };
         }
 
@@ -178,8 +181,10 @@ const Subflow = () => {
   const toggleClassnames = () => {
     setNodes((nds) => {
       return nds.map((n) => {
-        n.className = n.className === 'light' ? 'dark' : 'light';
+        return {
-        return n;
+          ...n,
+          className: n.className === 'light' ? 'dark' : 'light',
+        };
       });
     });
   };
@@ -187,8 +192,10 @@ const Subflow = () => {
   const toggleChildNodes = () => {
     setNodes((nds) => {
       return nds.map((n) => {
-        n.hidden = !!n.parentNode && !n.hidden;
+        return {
-        return n;
+          ...n,
+          hidden: !!n.parentNode && !n.hidden,
+        };
       });
     });
   };
@@ -215,19 +222,12 @@ const Subflow = () => {
       <Background />
 
       <Panel position="top-right">
-        <button onClick={resetTransform} style={{ marginRight: 5 }}>
+        <button onClick={resetTransform}>reset transform</button>
-          reset transform
+        <button onClick={updatePos}>change pos</button>
-        </button>
+        <button onClick={toggleClassnames}>toggle classnames</button>
-        <button onClick={updatePos} style={{ marginRight: 5 }}>
+        <button onClick={toggleChildNodes}>toggleChildNodes</button>
-          change pos
-        </button>
-        <button onClick={toggleClassnames} style={{ marginRight: 5 }}>
-          toggle classnames
-        </button>
-        <button style={{ marginRight: 5 }} onClick={toggleChildNodes}>
-          toggleChildNodes
-        </button>
         <button onClick={logToObject}>toObject</button>
+        <button onClick={() => setNodes(initialNodes)}>setNodes</button>
       </Panel>
     </ReactFlow>
   );

packages/react/src/components/EdgeWrapper/index.tsx

@@ -101,12 +101,12 @@ export function EdgeWrapper({
   );
 
   const markerStartUrl = useMemo(
-    () => (edge.markerStart ? `url(#${getMarkerId(edge.markerStart, rfId)})` : undefined),
+    () => (edge.markerStart ? `url('#${getMarkerId(edge.markerStart, rfId)}')` : undefined),
     [edge.markerStart, rfId]
   );
 
   const markerEndUrl = useMemo(
-    () => (edge.markerEnd ? `url(#${getMarkerId(edge.markerEnd, rfId)})` : undefined),
+    () => (edge.markerEnd ? `url('#${getMarkerId(edge.markerEnd, rfId)}')` : undefined),
     [edge.markerEnd, rfId]
   );
 

packages/react/src/components/NodeWrapper/index.tsx

@@ -79,16 +79,33 @@ export function NodeWrapper({
   const prevTargetPosition = useRef(node.targetPosition);
   const prevType = useRef(nodeType);
 
+  const width = node.width ?? undefined;
+  const height = node.height ?? undefined;
+  const computedWidth = node.computed?.width;
+  const computedHeight = node.computed?.height;
+  const initialized = (!!computedWidth && !!computedHeight) || (!!width && !!height);
+  const hasHandleBounds = !!node[internalsSymbol]?.handleBounds;
+
   const moveSelectedNodes = useMoveSelectedNodes();
 
+  useEffect(() => {
+    return () => {
+      if (nodeRef.current) {
+        resizeObserver?.unobserve(nodeRef.current);
+      }
+    };
+  }, []);
+
   useEffect(() => {
     if (nodeRef.current && !node.hidden) {
       const currNode = nodeRef.current;
-      resizeObserver?.observe(currNode);
 
-      return () => resizeObserver?.unobserve(currNode);
+      if (!initialized || !hasHandleBounds) {
+        resizeObserver?.unobserve(currNode);
+        resizeObserver?.observe(currNode);
+      }
     }
-  }, [node.hidden]);
+  }, [node.hidden, initialized, hasHandleBounds]);
 
   useEffect(() => {
     // when the user programmatically changes the source or handle position, we re-initialize the node
@@ -123,11 +140,6 @@ export function NodeWrapper({
     return null;
   }
 
-  const width = node.width ?? undefined;
-  const height = node.height ?? undefined;
-  const computedWidth = node.computed?.width;
-  const computedHeight = node.computed?.height;
-
   const positionAbsoluteOrigin = getPositionWithOrigin({
     x: positionAbsoluteX,
     y: positionAbsoluteY,
@@ -135,7 +147,6 @@ export function NodeWrapper({
     height: computedHeight ?? height ?? 0,
     origin: node.origin || nodeOrigin,
   });
-  const initialized = (!!computedWidth && !!computedHeight) || (!!width && !!height);
   const hasPointerEvents = isSelectable || isDraggable || onClick || onMouseEnter || onMouseMove || onMouseLeave;
 
   const onMouseEnterHandler = onMouseEnter ? (event: MouseEvent) => onMouseEnter(event, { ...node }) : undefined;

packages/react/src/components/StoreUpdater/index.tsx

@@ -9,7 +9,7 @@ import { infiniteExtent, type CoordinateExtent } from '@xyflow/system';
 
 import { useStore, useStoreApi } from '../../hooks/useStore';
 import type { Node, Edge, ReactFlowState, ReactFlowProps, FitViewOptions } from '../../types';
-import { initNodeOrigin } from '../../container/ReactFlow';
+import { defaultNodeOrigin } from '../../container/ReactFlow/init-values';
 
 // these fields exist in the global store and we need to keep them up to date
 const reactFlowFieldsToTrack = [
@@ -84,6 +84,19 @@ const selector = (s: ReactFlowState) => ({
   setDefaultNodesAndEdges: s.setDefaultNodesAndEdges,
 });
 
+const initPrevValues = {
+  // these are values that are also passed directly to other components
+  // than the StoreUpdater. We can reduce the number of setStore calls
+  // by setting the same values here as prev fields.
+  translateExtent: infiniteExtent,
+  nodeOrigin: defaultNodeOrigin,
+  minZoom: 0.5,
+  maxZoom: 2,
+  elementsSelectable: true,
+  noPanClassName: 'nopan',
+  rfId: '1',
+};
+
 export function StoreUpdater(props: StoreUpdaterProps) {
   const {
     setNodes,
@@ -99,23 +112,15 @@ export function StoreUpdater(props: StoreUpdaterProps) {
 
   useEffect(() => {
     setDefaultNodesAndEdges(props.defaultNodes, props.defaultEdges);
+
     return () => {
+      // when we reset the store we also need to reset the previous fields
+      previousFields.current = initPrevValues;
       reset();
     };
   }, []);
 
-  const previousFields = useRef<Partial<StoreUpdaterProps>>({
+  const previousFields = useRef<Partial<StoreUpdaterProps>>(initPrevValues);
-    // these are values that are also passed directly to other components
-    // than the StoreUpdater. We can reduce the number of setStore calls
-    // by setting the same values here as prev fields.
-    translateExtent: infiniteExtent,
-    nodeOrigin: initNodeOrigin,
-    minZoom: 0.5,
-    maxZoom: 2,
-    elementsSelectable: true,
-    noPanClassName: 'nopan',
-    rfId: '1',
-  });
 
   useEffect(
     () => {

packages/react/src/container/ReactFlow/index.tsx

@@ -1,14 +1,6 @@
 import { forwardRef, type CSSProperties } from 'react';
 import cc from 'classcat';
-import {
+import { ConnectionLineType, PanOnScrollMode, SelectionMode, infiniteExtent, isMacOs } from '@xyflow/system';
-  ConnectionLineType,
-  PanOnScrollMode,
-  SelectionMode,
-  infiniteExtent,
-  isMacOs,
-  type NodeOrigin,
-  type Viewport,
-} from '@xyflow/system';
 
 import { A11yDescriptions } from '../../components/A11yDescriptions';
 import { Attribution } from '../../components/Attribution';
@@ -18,9 +10,7 @@ import { useColorModeClass } from '../../hooks/useColorModeClass';
 import { GraphView } from '../GraphView';
 import { Wrapper } from './Wrapper';
 import type { ReactFlowProps, ReactFlowRefType } from '../../types';
-
+import { defaultViewport as initViewport, defaultNodeOrigin } from './init-values';
-export const initNodeOrigin: NodeOrigin = [0, 0];
-const initDefaultViewport: Viewport = { x: 0, y: 0, zoom: 1 };
 
 const wrapperStyle: CSSProperties = {
   width: '100%',
@@ -89,11 +79,11 @@ const ReactFlow = forwardRef<ReactFlowRefType, ReactFlowProps>(
       nodesDraggable,
       nodesConnectable,
       nodesFocusable,
-      nodeOrigin = initNodeOrigin,
+      nodeOrigin = defaultNodeOrigin,
       edgesFocusable,
       edgesUpdatable,
       elementsSelectable = true,
-      defaultViewport = initDefaultViewport,
+      defaultViewport = initViewport,
       minZoom = 0.5,
       maxZoom = 2,
       translateExtent = infiniteExtent,

packages/react/src/container/ReactFlow/init-values.ts

@@ -0,0 +1,4 @@
+import { type NodeOrigin, Viewport } from '@xyflow/system';
+
+export const defaultNodeOrigin: NodeOrigin = [0, 0];
+export const defaultViewport: Viewport = { x: 0, y: 0, zoom: 1 };

packages/react/src/store/index.ts

@@ -303,13 +303,7 @@ const createRFStore = ({
         set(currentConnection);
       },
 
-      reset: () => {
+      reset: () => set({ ...getInitialState() }),
-        // @todo: what should we do about this? Do we still need it?
-        // if you are on a SPA with multiple flows, we want to make sure that the store gets resetted
-        // when you switch pages. Does this reset solves this? Currently it always gets called. This
-        // leads to an emtpy nodes array at the beginning.
-        // set({ ...getInitialState() });
-      },
     }),
     Object.is
   );

packages/system/src/utils/store.ts

@@ -94,8 +94,8 @@ export function adoptUserProvidedNodes<NodeType extends NodeBase>(
       ...n,
       computed: {
         positionAbsolute: n.position,
-        width: n.computed?.width || currentStoreNode?.computed?.width,
+        width: n.computed?.width,
-        height: n.computed?.height || currentStoreNode?.computed?.height,
+        height: n.computed?.height,
       },
     };
     const z = (isNumeric(n.zIndex) ? n.zIndex : 0) + (n.selected ? selectedNodeZ : 0);