feat: Redesign variant editor with preset buttons

Major UX improvements based on user feedback:
- Replaced auto-populated columns with preset shortcut buttons
- Quick Add buttons for Size, Color, Material, Storage
- Custom button for user-defined property names
- Double-click column headers to rename
- Rename column option in context menu
- Starts with single empty column instead of defaults
- Improved usage instructions in UI
- Cache-busting version updated to force reload

This design is more flexible and less confusing than auto-generating columns.

LittleShop/Areas/Admin/Views/VariantCollections/Create.cshtml

@@ -42,11 +42,11 @@
                 <div class="form-text mt-2">
                     <strong><i class="fas fa-info-circle"></i> How to use:</strong>
                     <ul class="mb-1">
-                        <li><strong>Click column headers</strong> to select property type (Size, Color, Material, Storage, or Custom)</li>
+                        <li><strong>Quick Add buttons:</strong> Click preset buttons (Size, Color, Material, Storage) to add pre-populated columns</li>
-                        <li><strong>Click cells</strong> to edit values directly</li>
+                        <li><strong>Custom button:</strong> Click Custom to add a column with your own name</li>
-                        <li><strong>Right-click</strong> for menu to add/remove rows and columns</li>
+                        <li><strong>Double-click headers:</strong> Double-click column headers to rename them</li>
+                        <li><strong>Right-click menu:</strong> Add/remove rows and columns, rename columns, clear values</li>
                         <li><strong>Keyboard shortcuts:</strong> Tab to move right, Enter to move down, Ctrl+D to delete, Ctrl+Enter to save</li>
-                        <li><strong>Mobile:</strong> Swipe rows left/right to delete</li>
                     </ul>
                     <small class="text-muted">Changes are automatically saved when you click "Create Collection" below.</small>
                 </div>
@@ -67,14 +67,14 @@
     @{await Html.RenderPartialAsync("_ValidationScriptsPartial");}
 
     <!-- Handsontable Spreadsheet Library -->
-    <link rel="stylesheet" href="~/lib/handsontable/handsontable.full.min.css?v=20251113" />
+    <link rel="stylesheet" href="~/lib/handsontable/handsontable.full.min.css?v=20251113b" />
-    <script src="~/lib/handsontable/handsontable.full.min.js?v=20251113"></script>
+    <script src="~/lib/handsontable/handsontable.full.min.js?v=20251113b"></script>
 
     <!-- Hammer.js for Touch Gestures -->
-    <script src="~/lib/hammerjs/hammer.min.js?v=20251113"></script>
+    <script src="~/lib/hammerjs/hammer.min.js?v=20251113b"></script>
 
     <!-- Variant Editor Module -->
-    <script src="~/js/variant-editor.js?v=20251113"></script>
+    <script src="~/js/variant-editor.js?v=20251113b"></script>
 
     <!-- Initialize Variant Editor -->
     <script>

LittleShop/Areas/Admin/Views/VariantCollections/Edit.cshtml

@@ -43,11 +43,11 @@
                 <div class="form-text mt-2">
                     <strong><i class="fas fa-info-circle"></i> How to use:</strong>
                     <ul class="mb-1">
-                        <li><strong>Click column headers</strong> to select property type (Size, Color, Material, Storage, or Custom)</li>
+                        <li><strong>Quick Add buttons:</strong> Click preset buttons (Size, Color, Material, Storage) to add pre-populated columns</li>
-                        <li><strong>Click cells</strong> to edit values directly</li>
+                        <li><strong>Custom button:</strong> Click Custom to add a column with your own name</li>
-                        <li><strong>Right-click</strong> for menu to add/remove rows and columns</li>
+                        <li><strong>Double-click headers:</strong> Double-click column headers to rename them</li>
+                        <li><strong>Right-click menu:</strong> Add/remove rows and columns, rename columns, clear values</li>
                         <li><strong>Keyboard shortcuts:</strong> Tab to move right, Enter to move down, Ctrl+D to delete, Ctrl+Enter to save</li>
-                        <li><strong>Mobile:</strong> Swipe rows left/right to delete</li>
                     </ul>
                     <small class="text-muted">Changes are automatically saved when you click "Save Changes" below.</small>
                 </div>
@@ -78,14 +78,14 @@
     @{await Html.RenderPartialAsync("_ValidationScriptsPartial");}
 
     <!-- Handsontable Spreadsheet Library -->
-    <link rel="stylesheet" href="~/lib/handsontable/handsontable.full.min.css?v=20251113" />
+    <link rel="stylesheet" href="~/lib/handsontable/handsontable.full.min.css?v=20251113b" />
-    <script src="~/lib/handsontable/handsontable.full.min.js?v=20251113"></script>
+    <script src="~/lib/handsontable/handsontable.full.min.js?v=20251113b"></script>
 
     <!-- Hammer.js for Touch Gestures -->
-    <script src="~/lib/hammerjs/hammer.min.js?v=20251113"></script>
+    <script src="~/lib/hammerjs/hammer.min.js?v=20251113b"></script>
 
     <!-- Variant Editor Module -->
-    <script src="~/js/variant-editor.js?v=20251113"></script>
+    <script src="~/js/variant-editor.js?v=20251113b"></script>
 
     <!-- Initialize Variant Editor -->
     <script>

LittleShop/wwwroot/js/variant-editor.js

@@ -6,8 +6,9 @@
  *
  * Features:
  * - Property presets (Size, Color, Material, Storage, Custom)
+ * - Preset shortcut buttons for quick column addition
  * - Inline cell editing with Tab navigation
- * - Add/remove rows and columns dynamically
+ * - Add/remove rows and columns via context menu
  * - Keyboard shortcuts (Ctrl+D delete, Ctrl+Enter save)
  * - Mobile-friendly touch gestures
  * - Automatic JSON serialization
@@ -19,8 +20,8 @@ class VariantEditor {
         this.hot = null;
         this.initialData = this.parseInitialData(initialData);
         this.options = {
-            minRows: 3,
+            minRows: 5,
-            minCols: 2,
+            minCols: 1,
             maxCols: 10,
             ...options
         };
@@ -30,8 +31,7 @@ class VariantEditor {
             'Size': ['XS', 'S', 'M', 'L', 'XL', 'XXL'],
             'Color': ['Black', 'White', 'Red', 'Blue', 'Green', 'Yellow', 'Pink', 'Purple', 'Gray', 'Brown'],
             'Material': ['Cotton', 'Polyester', 'Silk', 'Wool', 'Leather', 'Denim', 'Linen'],
-            'Storage': ['16GB', '32GB', '64GB', '128GB', '256GB', '512GB', '1TB'],
+            'Storage': ['16GB', '32GB', '64GB', '128GB', '256GB', '512GB', '1TB']
-            'Custom': null  // Freeform text
         };
 
         this.init();
@@ -41,13 +41,16 @@ class VariantEditor {
      * Parse initial JSON data into spreadsheet format
      */
     parseInitialData(jsonString) {
+        // If no data, start with empty grid
         if (!jsonString || jsonString.trim() === '' || jsonString === '[]') {
             return {
-                properties: ['Size', 'Color'],
+                properties: ['Property 1'],
                 values: [
-                    ['S', 'Black'],
+                    [null],
-                    ['M', 'White'],
+                    [null],
-                    ['L', 'Red']
+                    [null],
+                    [null],
+                    [null]
                 ]
             };
         }
@@ -63,7 +66,7 @@ class VariantEditor {
             const propertyValues = properties.map(p => p.values);
 
             // Determine max number of rows needed
-            const maxRows = Math.max(...propertyValues.map(v => Array.isArray(v) ? v.length : 0), 1);
+            const maxRows = Math.max(...propertyValues.map(v => Array.isArray(v) ? v.length : 0), this.options.minRows);
 
             // Build grid data
             const gridData = [];
@@ -83,7 +86,7 @@ class VariantEditor {
                 values: gridData
             };
         } catch (e) {
-            console.warn('Failed to parse initial data, using defaults:', e);
+            console.warn('Failed to parse initial data, using empty grid:', e);
             return this.parseInitialData('');
         }
     }
@@ -97,28 +100,59 @@ class VariantEditor {
             return;
         }
 
-        this.hot = new Handsontable(this.container, {
+        // Create preset buttons toolbar
+        this.createPresetToolbar();
+
+        // Create spreadsheet container
+        const spreadsheetDiv = document.createElement('div');
+        spreadsheetDiv.id = this.container.id + '-grid';
+        spreadsheetDiv.style.marginTop = '10px';
+        this.container.appendChild(spreadsheetDiv);
+
+        this.hot = new Handsontable(spreadsheetDiv, {
             data: this.initialData.values,
             colHeaders: this.initialData.properties,
             rowHeaders: true,
             minRows: this.options.minRows,
             minSpareRows: 1,
             minCols: this.options.minCols,
-            minSpareCols: 1,
+            minSpareCols: 0,
             maxCols: this.options.maxCols,
             contextMenu: {
                 items: {
-                    'row_above': {},
+                    'row_above': {
-                    'row_below': {},
+                        name: 'Insert row above'
+                    },
+                    'row_below': {
+                        name: 'Insert row below'
+                    },
                     'separator1': '---------',
-                    'remove_row': {},
+                    'remove_row': {
+                        name: 'Delete row'
+                    },
                     'separator2': '---------',
-                    'col_left': {},
+                    'col_left': {
-                    'col_right': {},
+                        name: 'Insert column left'
+                    },
+                    'col_right': {
+                        name: 'Insert column right'
+                    },
                     'separator3': '---------',
-                    'remove_col': {},
+                    'remove_col': {
+                        name: 'Delete column'
+                    },
                     'separator4': '---------',
-                    'clear_column': {},
+                    'rename_column': {
+                        name: 'Rename column...',
+                        callback: (key, selection) => {
+                            const col = selection[0].start.col;
+                            this.showRenameDialog(col);
+                        }
+                    },
+                    'separator5': '---------',
+                    'clear_column': {
+                        name: 'Clear column values'
+                    },
                     'undo': {},
                     'redo': {}
                 }
@@ -128,23 +162,18 @@ class VariantEditor {
             undo: true,
             autoWrapRow: true,
             autoWrapCol: true,
-            enterMoves: { row: 0, col: 1 },  // Tab behavior: move right
+            enterMoves: { row: 1, col: 0 },  // Enter moves down
-            tabMoves: { row: 0, col: 1 },
+            tabMoves: { row: 0, col: 1 },    // Tab moves right
             fillHandle: {
                 autoInsertRow: true
             },
             stretchH: 'all',
             licenseKey: 'non-commercial-and-evaluation',  // Community Edition
 
-            // Enable column header editing for property names
+            // Double-click header to rename
-            afterGetColHeader: (col, TH) => {
-                TH.classList.add('editable-header');
-            },
-
-            // Make headers clickable to change property type
             afterOnCellMouseDown: (event, coords) => {
-                if (coords.row === -1 && coords.col >= 0) {
+                if (coords.row === -1 && coords.col >= 0 && event.detail === 2) {
-                    this.showPropertyTypeMenu(coords.col, event);
+                    this.showRenameDialog(coords.col);
                 }
             }
         });
@@ -159,104 +188,128 @@ class VariantEditor {
     }
 
     /**
-     * Show property type selection menu
+     * Create preset shortcut buttons toolbar
      */
-    showPropertyTypeMenu(colIndex, event) {
+    createPresetToolbar() {
-        const currentHeader = this.hot.getColHeader(colIndex);
+        const toolbar = document.createElement('div');
-        const menu = document.createElement('div');
+        toolbar.className = 'variant-preset-toolbar';
-        menu.className = 'property-type-menu';
+        toolbar.style.marginBottom = '10px';
-        menu.style.position = 'absolute';
+        toolbar.style.display = 'flex';
-        menu.style.left = event.clientX + 'px';
+        toolbar.style.gap = '8px';
-        menu.style.top = event.clientY + 'px';
+        toolbar.style.flexWrap = 'wrap';
-        menu.style.zIndex = 10000;
-        menu.style.background = 'white';
-        menu.style.border = '1px solid #ccc';
-        menu.style.borderRadius = '4px';
-        menu.style.boxShadow = '0 4px 6px rgba(0,0,0,0.1)';
-        menu.style.padding = '8px 0';
-        menu.style.minWidth = '150px';
 
-        const presetOptions = Object.keys(this.propertyPresets);
+        const label = document.createElement('strong');
-        presetOptions.push('Custom...');
+        label.textContent = 'Quick Add: ';
+        label.style.marginRight = '8px';
+        label.style.alignSelf = 'center';
+        toolbar.appendChild(label);
 
-        presetOptions.forEach(preset => {
+        // Add preset buttons
-            const option = document.createElement('div');
+        Object.keys(this.propertyPresets).forEach(presetName => {
-            option.className = 'property-type-option';
+            const button = document.createElement('button');
-            option.textContent = preset === 'Custom...' ? '✏️ ' + preset : preset;
+            button.type = 'button';
-            option.style.padding = '8px 16px';
+            button.className = 'btn btn-sm btn-outline-primary';
-            option.style.cursor = 'pointer';
+            button.innerHTML = `<i class="fas fa-plus"></i> ${presetName}`;
+            button.style.fontSize = '12px';
 
-            if (preset === currentHeader) {
+            button.addEventListener('click', () => {
-                option.style.background = '#e3f2fd';
+                this.addPresetColumn(presetName);
-                option.style.fontWeight = 'bold';
-            }
-
-            option.addEventListener('mouseenter', () => {
-                option.style.background = '#f5f5f5';
             });
 
-            option.addEventListener('mouseleave', () => {
+            toolbar.appendChild(button);
-                if (preset !== currentHeader) {
-                    option.style.background = 'white';
-                } else {
-                    option.style.background = '#e3f2fd';
-                }
         });
 
-            option.addEventListener('click', () => {
+        // Add custom column button
-                if (preset === 'Custom...') {
+        const customButton = document.createElement('button');
-                    const customName = prompt('Enter custom property name:', currentHeader);
+        customButton.type = 'button';
-                    if (customName) {
+        customButton.className = 'btn btn-sm btn-outline-secondary';
-                        this.setPropertyType(colIndex, customName, null);
+        customButton.innerHTML = `<i class="fas fa-pencil-alt"></i> Custom`;
-                    }
+        customButton.style.fontSize = '12px';
-                } else {
+
-                    this.setPropertyType(colIndex, preset, this.propertyPresets[preset]);
+        customButton.addEventListener('click', () => {
-                }
+            this.addCustomColumn();
-                document.body.removeChild(menu);
         });
 
-            menu.appendChild(option);
+        toolbar.appendChild(customButton);
-        });
 
-        document.body.appendChild(menu);
+        this.container.appendChild(toolbar);
-
-        // Close menu when clicking outside
-        const closeMenu = (e) => {
-            if (!menu.contains(e.target)) {
-                document.body.removeChild(menu);
-                document.removeEventListener('click', closeMenu);
-            }
-        };
-        setTimeout(() => document.addEventListener('click', closeMenu), 10);
     }
 
     /**
-     * Set property type for a column
+     * Add a preset column to the spreadsheet
      */
-    setPropertyType(colIndex, propertyName, presetValues) {
+    addPresetColumn(presetName) {
+        const presetValues = this.propertyPresets[presetName];
+        const currentColCount = this.hot.countCols();
+
+        // Insert new column
+        this.hot.alter('insert_col_end', currentColCount, 1);
+
         // Update column header
+        const headers = this.hot.getColHeaders();
+        headers[currentColCount] = presetName;
         this.hot.updateSettings({
-            colHeaders: this.hot.getSettings().colHeaders.map((header, index) => {
+            colHeaders: headers
-                return index === colIndex ? propertyName : header;
-            })
         });
 
-        // If preset has values, populate the column
+        // Populate with preset values
         if (presetValues && Array.isArray(presetValues)) {
-            const data = this.hot.getData();
             presetValues.forEach((value, rowIndex) => {
-                if (rowIndex < data.length) {
+                if (rowIndex < this.hot.countRows()) {
-                    this.hot.setDataAtCell(rowIndex, colIndex, value);
+                    this.hot.setDataAtCell(rowIndex, currentColCount, value);
                 }
             });
         }
     }
 
+    /**
+     * Add a custom column to the spreadsheet
+     */
+    addCustomColumn() {
+        const customName = prompt('Enter column name:', 'Custom Property');
+        if (!customName || customName.trim() === '') {
+            return;
+        }
+
+        const currentColCount = this.hot.countCols();
+
+        // Insert new column
+        this.hot.alter('insert_col_end', currentColCount, 1);
+
+        // Update column header
+        const headers = this.hot.getColHeaders();
+        headers[currentColCount] = customName.trim();
+        this.hot.updateSettings({
+            colHeaders: headers
+        });
+    }
+
+    /**
+     * Show rename dialog for column
+     */
+    showRenameDialog(colIndex) {
+        const currentHeader = this.hot.getColHeader(colIndex);
+        const newName = prompt('Rename column:', currentHeader);
+
+        if (newName && newName.trim() !== '') {
+            const headers = this.hot.getColHeaders();
+            headers[colIndex] = newName.trim();
+            this.hot.updateSettings({
+                colHeaders: headers
+            });
+        }
+    }
+
     /**
      * Setup keyboard shortcuts
      */
     setupKeyboardShortcuts() {
         document.addEventListener('keydown', (e) => {
+            // Only process if the spreadsheet is focused
+            if (!this.container.contains(document.activeElement)) {
+                return;
+            }
+
             // Ctrl+D or Cmd+D: Delete selected rows/columns
             if ((e.ctrlKey || e.metaKey) && e.key === 'd') {
                 e.preventDefault();
@@ -314,20 +367,24 @@ class VariantEditor {
         // Process each column
         for (let col = 0; col < headers.length; col++) {
             const propertyName = headers[col];
-            if (!propertyName || propertyName.trim() === '') continue;
+
+            // Skip empty column names
+            if (!propertyName || propertyName.trim() === '' || propertyName.startsWith('Property ')) {
+                continue;
+            }
 
             // Collect non-null values from this column
             const values = [];
             for (let row = 0; row < data.length; row++) {
                 const cellValue = data[row][col];
                 if (cellValue !== null && cellValue !== undefined && cellValue !== '') {
-                    values.push(cellValue);
+                    values.push(String(cellValue).trim());
                 }
             }
 
             // Create property object
             const property = {
-                name: propertyName,
+                name: propertyName.trim(),
                 values: values.length > 0 ? values : null  // null means freeform
             };
 
@@ -336,7 +393,7 @@ class VariantEditor {
 
         const jsonString = JSON.stringify(properties, null, 2);
 
-        // Update hidden input or textarea
+        // Update hidden input
         const hiddenInput = document.getElementById('PropertiesJson');
         if (hiddenInput) {
             hiddenInput.value = jsonString;