feat(ItemsList): enhance table layout to matxh wireframe and improve item deletion UI

src/app/[encodedUrl]/page.tsx

@@ -0,0 +1,132 @@
+'use client';
+
+import React, { Suspense } from 'react';
+import { useParams } from 'next/navigation';
+import { ItemsList } from '@/components/ItemsList';
+
+// Loading component for better UX
+function LoadingSpinner() {
+  return (
+    <div className="flex items-center justify-center min-h-[400px]">
+      <div className="flex flex-col items-center space-y-4">
+        <div className="animate-spin rounded-full h-12 w-12 border-b-2 border-blue-500"></div>
+        <span className="text-gray-600 text-sm">Loading items...</span>
+      </div>
+    </div>
+  );
+}
+
+// Error boundary component
+function ErrorFallback({ error, resetError }: { error: Error; resetError: () => void }) {
+  return (
+    <div className="flex flex-col items-center justify-center min-h-[400px] p-8">
+      <div className="bg-red-50 border border-red-200 rounded-lg p-6 max-w-md w-full">
+        <h2 className="text-red-800 text-lg font-semibold mb-2">
+          Something went wrong
+        </h2>
+        <p className="text-red-600 text-sm mb-4">
+          {error.message || 'An unexpected error occurred while loading the items.'}
+        </p>
+        <div className="flex space-x-3">
+          <button
+            onClick={resetError}
+            className="bg-red-600 text-white px-4 py-2 rounded hover:bg-red-700 transition-colors text-sm"
+          >
+            Try again
+          </button>
+          <button
+            onClick={() => window.location.reload()}
+            className="bg-gray-600 text-white px-4 py-2 rounded hover:bg-gray-700 transition-colors text-sm"
+          >
+            Reload page
+          </button>
+        </div>
+      </div>
+    </div>
+  );
+}
+
+// Simple error boundary implementation
+class ErrorBoundary extends React.Component<
+  { children: React.ReactNode; fallback: (error: Error, resetError: () => void) => React.ReactNode },
+  { hasError: boolean; error?: Error }
+> {
+  constructor(props: { children: React.ReactNode; fallback: (error: Error, resetError: () => void) => React.ReactNode }) {
+    super(props);
+    this.state = { hasError: false };
+  }
+
+  static getDerivedStateFromError(error: Error) {
+    return { hasError: true, error };
+  }
+
+  componentDidCatch(error: Error, errorInfo: React.ErrorInfo) {
+    console.error('Error caught by boundary:', error, errorInfo);
+  }
+
+  render() {
+    if (this.state.hasError && this.state.error) {
+      return this.props.fallback(this.state.error, () => {
+        this.setState({ hasError: false, error: undefined });
+      });
+    }
+
+    return this.props.children;
+  }
+}
+
+export default function UrlPage() {
+  const params = useParams();
+  const encodedUrlParam = params.encodedUrl || '';
+  
+  // Handle both string and string[] cases
+  const encodedUrl = Array.isArray(encodedUrlParam) ? encodedUrlParam[0] : encodedUrlParam;
+  const decodedUrl = decodeURIComponent(encodedUrl);
+
+  return (
+    <div className="min-h-screen bg-gray-50">
+      {/* Header */}
+      <header className="bg-white shadow-sm border-b">
+        <div className="max-w-7xl mx-auto px-4 sm:px-6 lg:px-8">
+          <div className="flex justify-between items-center h-16">
+            <div className="flex items-center">
+              <h1 className="text-xl font-semibold text-gray-900">
+                CompareWare
+              </h1>
+            </div>
+            <div className="flex items-center space-x-4">
+              <div className="text-sm text-gray-500">
+                Item Comparison Tool
+              </div>
+            </div>
+          </div>
+        </div>
+      </header>
+
+      {/* Main content */}
+      <main className="max-w-7xl mx-auto px-4 sm:px-6 lg:px-8 py-8">
+        <div className="mb-8">
+          <h2 className="text-2xl font-bold text-gray-900 mb-2">
+            {`Items Comparison for "${decodedUrl}"`}
+          </h2>
+        </div>
+
+        {/* Items list with error boundary and suspense */}
+        <ErrorBoundary fallback={(error, resetError) => <ErrorFallback error={error} resetError={resetError} />}>
+          <Suspense fallback={<LoadingSpinner />}>
+            <ItemsList url={decodedUrl} />
+          </Suspense>
+        </ErrorBoundary>
+      </main>
+
+      {/* Footer */}
+      <footer className="bg-white border-t mt-16">
+        <div className="max-w-7xl mx-auto px-4 sm:px-6 lg:px-8 py-8">
+          <div className="text-center text-gray-500 text-sm">
+            <p>&copy; 2025 CompareWare.</p>
+          </div>
+        </div>
+      </footer>
+    </div>
+  );
+}

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]);
+    lastExternalValueRef.current = value;
     
-  // Reset external update flag after a short delay
-  useEffect(() => {
-    if (isExternalUpdate) {
+    // 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') {

src/components/ItemsList.tsx

@@ -274,13 +274,14 @@ export function ItemsList({ url }: ItemsListProps) {
           setPropertyLabels(prev => ({ ...prev, ...labels }));
         });
       }
+    }
+  }, [itemsData]);
 
-      // Set initial focus
-      if (loadedItems.length > 0 && !focusedItemId) {
-        setFocusedItemId(loadedItems[0].id);
-      }
-    }
-  }, [itemsData, focusedItemId]);
+  // Reset focus state when URL changes
+  useEffect(() => {
+    setFocusedCell(null);
+    setFocusedItemId(null);
+  }, [url]);
 
   // Mutations
   const saveItemMutation = useMutation({
@@ -568,31 +569,16 @@ export function ItemsList({ url }: ItemsListProps) {
     <div className="p-4">
       <h1 className="text-2xl font-bold mb-4">Items List</h1>
       
-      <div className="overflow-x-auto">
-        <table className="min-w-full border-collapse border border-gray-300">
-          <thead>
-            <tr>
-              <th className="border border-gray-300 p-2 bg-gray-100">Property</th>
-              {items.map((item, index) => (
-                <th key={item.id} className="border border-gray-300 p-2 bg-gray-100 relative">
-                  {item.name || `Item ${index + 1}`}
-                  <button
-                    onClick={() => removeItem(index)}
-                    className="absolute top-1 right-1 w-5 h-5 bg-red-500 text-white rounded-full text-xs hover:bg-red-600"
-                    title="Delete item"
-                  >
-                    ×
-                  </button>
-                </th>
-              ))}
-            </tr>
-          </thead>
+      <div className="table-container">
+        <table>
           <tbody>
             {/* Name row */}
             <tr>
-              <td className="border border-gray-300 p-2 font-medium">Name</td>
+              <td className="font-medium">Name</td>
               {items.map((item, index) => (
-                <td key={`name-${item.id}`} className="border border-gray-300 p-2">
+                <td key={`name-${item.id}`}>
+                  <div className="flex items-center gap-2">
+                    <div className="flex-1">
                       <TypeaheadInput
                         value={item.name}
                         onInput={(value) => updateItem(index, 'name', value)}
@@ -601,15 +587,24 @@ export function ItemsList({ url }: ItemsListProps) {
                         onFocus={() => setFocusedItemId(item.id)}
                         placeholder="Enter item name"
                       />
+                    </div>
+                    <button
+                      onClick={() => removeItem(index)}
+                      className="delete-button item-delete"
+                      title="Delete item"
+                    >
+                      ×
+                    </button>
+                  </div>
                 </td>
               ))}
             </tr>
             
             {/* Description row */}
             <tr>
-              <td className="border border-gray-300 p-2 font-medium">Description</td>
+              <td className="font-medium">Description</td>
               {items.map((item, index) => (
-                <td key={`description-${item.id}`} className="border border-gray-300 p-2">
+                <td key={`description-${item.id}`}>
                   <EditableCell
                     value={item.description}
                     onInput={(value) => updateItem(index, 'description', value)}
@@ -627,18 +622,18 @@ export function ItemsList({ url }: ItemsListProps) {
               const propertyLabel = propertyLabels[property] || property;
               return (
                 <tr key={property}>
-                  <td className="border border-gray-300 p-2 font-medium relative">
+                  <td className="font-medium relative">
                     {propertyLabel}
                     <button
                       onClick={() => removeProperty(property)}
-                      className="absolute top-1 right-1 w-5 h-5 bg-red-500 text-white rounded-full text-xs hover:bg-red-600"
+                      className="delete-button property-delete"
                       title="Delete property"
                     >
                       ×
                     </button>
                   </td>
                   {items.map((item, index) => (
-                    <td key={`${property}-${item.id}`} className="border border-gray-300 p-2">
+                    <td key={`${property}-${item.id}`}>
                       <EditableCell
                         value={item.customProperties[property] || ''}
                         onInput={(value) => updateItem(index, property, value)}