add mouse tool bindings persistence with localStorage

dicom-viewer/src/App.tsx

@@ -152,6 +152,10 @@ function App({ container_id, imageStacks, autoCacheStack, annotationJson, viewer
   const elementRef = useRef<HTMLDivElement>(null)
   const running = useRef(false)
 
+
+  const MOUSE_SETTINGS_KEY = "dv3d_mouseToolBindings";
+  const CTRL_MOUSE_SETTINGS_KEY = "dv3d_ctrlMouseToolBindings";
+
   // State to control preset menu open/close
   const [presetsOpen, setPresetsOpen] = useState(false);
 
@@ -176,6 +180,8 @@ function App({ container_id, imageStacks, autoCacheStack, annotationJson, viewer
     () => Array(MAX_VIEWPORTS).fill([])
   );
 
+
+
   // Replace all setViewportImageIds calls with this function:
   const setViewportImageIds = (value: React.SetStateAction<string[][]>) => {
     // Log every call
@@ -502,6 +508,9 @@ function App({ container_id, imageStacks, autoCacheStack, annotationJson, viewer
       renderingEngineRef.current.render();
       return next;
     });
+
+
+
   };
 
   // Add this function to gather and format metadata:
@@ -562,7 +571,32 @@ function App({ container_id, imageStacks, autoCacheStack, annotationJson, viewer
     setMetaModalOpen(true);
   };
 
-  // Inside your App component:
+
+// --- Load from localStorage on mount ---
+useEffect(() => {
+  try {
+    const mouse = localStorage.getItem(MOUSE_SETTINGS_KEY);
+    const ctrl = localStorage.getItem(CTRL_MOUSE_SETTINGS_KEY);
+    if (mouse) setMouseToolBindings(JSON.parse(mouse));
+    if (ctrl) setCtrlMouseToolBindings(JSON.parse(ctrl));
+  } catch (e) {
+    // Ignore parse errors
+  }
+}, []);
+
+// --- Save to localStorage when changed ---
+useEffect(() => {
+  try {
+    localStorage.setItem(MOUSE_SETTINGS_KEY, JSON.stringify(mouseToolBindings));
+  } catch (e) {}
+}, [mouseToolBindings]);
+
+useEffect(() => {
+  try {
+    localStorage.setItem(CTRL_MOUSE_SETTINGS_KEY, JSON.stringify(ctrlMouseToolBindings));
+  } catch (e) {}
+}, [ctrlMouseToolBindings]);
+
   useEffect(() => {
     window.loadDicomStackFromFiles = (files: FileList | File[]) => {
       // Convert FileList to array if needed