chore(example): add switch

example/src/Stress/index.js

@@ -33,15 +33,23 @@ const StressFlow = () => {
     });
   };
 
+  const updateElements = () => {
+    const grid = Math.ceil(Math.random() * 10);
+    setElements(getElements(grid, grid));
+  };
+
   return (
     <ReactFlow elements={elements} onLoad={onLoad} onElementsRemove={onElementsRemove} onConnect={onConnect}>
       <MiniMap />
       <Controls />
       <Background />
 
-      <button onClick={updatePos} style={{ position: 'absolute', right: 10, top: 30, zIndex: 4 }}>
+      <div style={{ position: 'absolute', right: 10, top: 10, zIndex: 4 }}>
-        change pos
+        <button onClick={updatePos} style={{ marginRight: 5 }}>
-      </button>
+          change pos
+        </button>
+        <button onClick={updateElements}>update elements</button>
+      </div>
     </ReactFlow>
   );
 };

example/src/Stress/utils.js

@@ -15,7 +15,7 @@ export function getElements(xElements = 10, yElements = 10) {
       };
       initialElements.push(node);
 
-      if (recentNodeId && nodeId <= (xElements * yElements)) {
+      if (recentNodeId && nodeId <= xElements * yElements) {
         initialElements.push({ id: `${x}-${y}`, source: recentNodeId.toString(), target: nodeId.toString() });
       }
 

example/src/Switch/index.js

@@ -0,0 +1,54 @@
+import React, { useState } from 'react';
+
+import ReactFlow, { removeElements, addEdge } from 'react-flow-renderer';
+
+const onNodeDragStop = (event, node) => console.log('drag stop', node);
+const onElementClick = (event, element) => console.log('click', element);
+
+const elementsA = [
+  { id: '1a', type: 'input', data: { label: 'Node 1' }, position: { x: 250, y: 5 }, className: 'light' },
+  { id: '2a', data: { label: 'Node 2' }, position: { x: 100, y: 100 }, className: 'light' },
+  { id: '3a', data: { label: 'Node 3' }, position: { x: 400, y: 100 }, className: 'light' },
+  { id: '4a', data: { label: 'Node 4' }, position: { x: 400, y: 200 }, className: 'light' },
+  { id: 'e1-2', source: '1a', target: '2a' },
+  { id: 'e1-3', source: '1a', target: '3a' },
+];
+
+const elementsB = [
+  { id: 'inputb', type: 'input', data: { label: 'Input' }, position: { x: 300, y: 5 }, className: 'light' },
+  { id: '1b', data: { label: 'Node 1' }, position: { x: 0, y: 100 }, className: 'light' },
+  { id: '2b', data: { label: 'Node 2' }, position: { x: 200, y: 100 }, className: 'light' },
+  { id: '3b', data: { label: 'Node 3' }, position: { x: 400, y: 100 }, className: 'light' },
+  { id: '4b', data: { label: 'Node 4' }, position: { x: 600, y: 100 }, className: 'light' },
+
+  { id: 'e1b', source: 'inputb', target: '1b' },
+  { id: 'e2b', source: 'inputb', target: '2b' },
+  { id: 'e3b', source: 'inputb', target: '3b' },
+  { id: 'e4b', source: 'inputb', target: '4b' },
+];
+
+const BasicFlow = () => {
+  const [elements, setElements] = useState(elementsA);
+  const onElementsRemove = (elementsToRemove) => setElements((els) => removeElements(elementsToRemove, els));
+  const onConnect = (params) => setElements((els) => addEdge(params, els));
+
+  return (
+    <ReactFlow
+      elements={elements}
+      onElementClick={onElementClick}
+      onElementsRemove={onElementsRemove}
+      onConnect={onConnect}
+      onNodeDragStop={onNodeDragStop}
+      className="react-flow-basic-example"
+    >
+      <div style={{ position: 'absolute', right: 10, top: 10, zIndex: 4 }}>
+        <button onClick={() => setElements(elementsA)} style={{ marginRight: 5 }}>
+          flow a
+        </button>
+        <button onClick={() => setElements(elementsB)}>flow b</button>
+      </div>
+    </ReactFlow>
+  );
+};
+
+export default BasicFlow;

example/src/index.js

@@ -20,6 +20,7 @@ import UpdateNode from './UpdateNode';
 import SaveRestore from './SaveRestore';
 import DragNDrop from './DragNDrop';
 import Layout from './Layouting';
+import SwitchFlows from './Switch';
 
 import './index.css';
 
@@ -96,6 +97,10 @@ const routes = [
     path: '/layouting',
     component: Layout,
   },
+  {
+    path: '/switch',
+    component: SwitchFlows,
+  },
 ];
 
 const Header = withRouter(({ history, location }) => {