refactor(controls): disable min/max buttons when reached

packages/controls/package.json

@@ -39,7 +39,8 @@
   },
   "dependencies": {
     "@reactflow/core": "workspace:*",
-    "classcat": "^5.0.3"
+    "classcat": "^5.0.3",
+    "zustand": "^4.3.1"
   },
   "peerDependencies": {
     "react": ">=17",
@@ -55,7 +56,9 @@
   },
   "rollup": {
     "globals": {
-      "classcat": "cc"
+      "classcat": "cc",
+      "zustand": "Zustand",
+      "zustand/shallow": "zustandShallow"
     },
     "name": "ReactFlowControls"
   }

packages/controls/src/Controls.tsx

@@ -1,5 +1,6 @@
 import { memo, useEffect, useState, type FC, type PropsWithChildren } from 'react';
 import cc from 'classcat';
+import { shallow } from 'zustand/shallow';
 import { useStore, useStoreApi, useReactFlow, Panel, type ReactFlowState } from '@reactflow/core';
 
 import PlusIcon from './Icons/Plus';
@@ -11,7 +12,11 @@ import ControlButton from './ControlButton';
 
 import type { ControlProps } from './types';
 
-const isInteractiveSelector = (s: ReactFlowState) => s.nodesDraggable || s.nodesConnectable || s.elementsSelectable;
+const selector = (s: ReactFlowState) => ({
+  isInteractive: s.nodesDraggable || s.nodesConnectable || s.elementsSelectable,
+  minZoomReached: s.transform[2] <= s.minZoom,
+  maxZoomReached: s.transform[2] >= s.maxZoom,
+});
 
 const Controls: FC<PropsWithChildren<ControlProps>> = ({
   style,
@@ -29,7 +34,7 @@ const Controls: FC<PropsWithChildren<ControlProps>> = ({
 }) => {
   const store = useStoreApi();
   const [isVisible, setIsVisible] = useState<boolean>(false);
-  const isInteractive = useStore(isInteractiveSelector);
+  const { isInteractive, minZoomReached, maxZoomReached } = useStore(selector, shallow);
   const { zoomIn, zoomOut, fitView } = useReactFlow();
 
   useEffect(() => {
@@ -79,6 +84,7 @@ const Controls: FC<PropsWithChildren<ControlProps>> = ({
             className="react-flow__controls-zoomin"
             title="zoom in"
             aria-label="zoom in"
+            disabled={maxZoomReached}
           >
             <PlusIcon />
           </ControlButton>
@@ -87,6 +93,7 @@ const Controls: FC<PropsWithChildren<ControlProps>> = ({
             className="react-flow__controls-zoomout"
             title="zoom out"
             aria-label="zoom out"
+            disabled={minZoomReached}
           >
             <MinusIcon />
           </ControlButton>

packages/controls/src/style.css

@@ -24,5 +24,13 @@
       max-width: 12px;
       max-height: 12px;
     }
+
+    &:disabled {
+      pointer-events: none;
+
+      svg {
+        fill-opacity: 0.4;
+      }
+    }
   }
 }

pnpm-lock.yaml

@@ -132,9 +132,11 @@ importers:
       '@types/react': '>=17'
       classcat: ^5.0.3
       typescript: ^4.9.4
+      zustand: ^4.3.1
     dependencies:
       '@reactflow/core': link:../core
       classcat: registry.npmjs.org/classcat/5.0.4
+      zustand: registry.npmjs.org/zustand/4.3.1
     devDependencies:
       '@reactflow/eslint-config': link:../../tooling/eslint-config
       '@reactflow/rollup-config': link:../../tooling/rollup-config
@@ -7445,6 +7447,14 @@ packages:
       punycode: registry.npmjs.org/punycode/2.1.1
     dev: true
 
+  registry.npmjs.org/use-sync-external-store/1.2.0:
+    resolution: {integrity: sha512-eEgnFxGQ1Ife9bzYs6VLi8/4X6CObHMw9Qr9tPY43iKwsPw8xE8+EFsf/2cFZ5S3esXgpWgtSCtLNS41F+sKPA==, registry: https://registry.npmjs.com/, tarball: https://registry.npmjs.org/use-sync-external-store/-/use-sync-external-store-1.2.0.tgz}
+    name: use-sync-external-store
+    version: 1.2.0
+    peerDependencies:
+      react: ^16.8.0 || ^17.0.0 || ^18.0.0
+    dev: false
+
   registry.npmjs.org/use-sync-external-store/1.2.0_react@18.2.0:
     resolution: {integrity: sha512-eEgnFxGQ1Ife9bzYs6VLi8/4X6CObHMw9Qr9tPY43iKwsPw8xE8+EFsf/2cFZ5S3esXgpWgtSCtLNS41F+sKPA==, registry: https://registry.npmjs.com/, tarball: https://registry.npmjs.org/use-sync-external-store/-/use-sync-external-store-1.2.0.tgz}
     id: registry.npmjs.org/use-sync-external-store/1.2.0
@@ -7786,6 +7796,23 @@ packages:
     engines: {node: '>=10'}
     dev: true
 
+  registry.npmjs.org/zustand/4.3.1:
+    resolution: {integrity: sha512-EVyo/eLlOTcJm/X5M00rwtbYFXwRVTaRteSvhtbTZUCQFJkNfIyHPiJ6Ke68MSWzcKHpPzvqNH4gC2ZS/sbNqw==, registry: https://registry.npmjs.com/, tarball: https://registry.npmjs.org/zustand/-/zustand-4.3.1.tgz}
+    name: zustand
+    version: 4.3.1
+    engines: {node: '>=12.7.0'}
+    peerDependencies:
+      immer: '>=9.0'
+      react: '>=16.8'
+    peerDependenciesMeta:
+      immer:
+        optional: true
+      react:
+        optional: true
+    dependencies:
+      use-sync-external-store: registry.npmjs.org/use-sync-external-store/1.2.0
+    dev: false
+
   registry.npmjs.org/zustand/4.3.1_react@18.2.0:
     resolution: {integrity: sha512-EVyo/eLlOTcJm/X5M00rwtbYFXwRVTaRteSvhtbTZUCQFJkNfIyHPiJ6Ke68MSWzcKHpPzvqNH4gC2ZS/sbNqw==, registry: https://registry.npmjs.com/, tarball: https://registry.npmjs.org/zustand/-/zustand-4.3.1.tgz}
     id: registry.npmjs.org/zustand/4.3.1