feat(EditableCell): improve handling of external updates and user input

src/components/EditableCell.tsx

@@ -26,65 +26,67 @@ export function EditableCell({
   className = ''
 }: EditableCellProps) {
   const [localValue, setLocalValue] = useState(value);
-  const [isExternalUpdate, setIsExternalUpdate] = useState(false);
   const inputRef = useRef<HTMLInputElement>(null);
   const textareaRef = useRef<HTMLTextAreaElement>(null);
+  const lastExternalValueRef = useRef(value);
+  const isUserInputRef = useRef(false);
   
-  // Update local value when prop changes (including external updates)
+  // Update local value when prop changes (only for genuine external updates)
   useEffect(() => {
-    if (value !== localValue) {
+    // Only update if this is a genuine external change (not from user input)
+    if (value !== lastExternalValueRef.current && !isUserInputRef.current) {
+      console.log('External value change detected for cell:', cellKey, value);
       setLocalValue(value);
-      setIsExternalUpdate(true);
     }
-  }, [value, localValue]);
-
-  // Reset external update flag after a short delay
-  useEffect(() => {
-    if (isExternalUpdate) {
+    lastExternalValueRef.current = value;
+    
+    // Reset user input flag after a short delay
+    if (isUserInputRef.current) {
       const timer = setTimeout(() => {
-        setIsExternalUpdate(false);
+        isUserInputRef.current = false;
       }, 100);
       return () => clearTimeout(timer);
     }
-  }, [isExternalUpdate]);
+  }, [value, cellKey]);
   
   // Handle focus when this cell becomes focused
   useEffect(() => {
     if (focusedCell === cellKey) {
       const element = inputType === 'textarea' ? textareaRef.current : inputRef.current;
-      if (element) {
+      if (element && document.activeElement !== element) {
         element.focus();
-        // Select all text when focusing, but not during external updates
-        if (!isExternalUpdate) {
+        // Only select text if this is not from user input
+        if (!isUserInputRef.current) {
           element.select();
         }
       }
     }
-  }, [focusedCell, cellKey, inputType, isExternalUpdate]);
+  }, [focusedCell, cellKey, inputType]);
   
   const handleInput = useCallback((e: React.ChangeEvent<HTMLInputElement | HTMLTextAreaElement>) => {
     const newValue = e.target.value;
-    console.log('Input event:', newValue);
+    console.log('Input event for cell:', cellKey, newValue);
+    isUserInputRef.current = true; // Mark as user input
     setLocalValue(newValue);
-  }, []);
+  }, [cellKey]);
   
   const commitInput = useCallback(() => {
-    console.log('Committing input:', localValue);
+    console.log('Committing input for cell:', cellKey, localValue);
     onInput(localValue);
-  }, [localValue, onInput]);
+  }, [localValue, onInput, cellKey]);
   
   const handleFocus = useCallback(() => {
-    console.log('Focus gained for key:', cellKey);
+    console.log('Focus gained for cell:', cellKey);
     setFocusedCell(cellKey);
     onFocus?.();
   }, [cellKey, setFocusedCell, onFocus]);
   
   const handleBlur = useCallback(() => {
-    console.log('Focus lost');
+    console.log('Focus lost for cell:', cellKey);
     setFocusedCell(null);
     commitInput();
     onBlur?.();
-  }, [setFocusedCell, commitInput, onBlur]);
+  }, [setFocusedCell, commitInput, onBlur, cellKey]);
   
   const handleKeyDown = useCallback((e: React.KeyboardEvent) => {
     if (e.key === 'Enter' && inputType === 'text') {