Feature Request: Advanced DataTable Features Roadmap

# @etherisc/ui-kit Feature Request: Advanced DataTable Features Roadmap

**Feature Request for**: @etherisc/ui-kit  
**Submitted by**: Web Application Team  
**Type**: Enhancement  
**Scope**: DataTable Component Enhancement  

## Overview

Building on the successful DataTable pagination architecture in v0.6.0, we propose a comprehensive enhancement roadmap to expose TanStack Table's advanced features through the ui-kit DataTable component. This will provide enterprise-grade table functionality while maintaining the clean, consistent API that ui-kit is known for.

## Business Justification

### Current Success
Our team has successfully implemented:
- Smart pagination configuration system with performance presets
- Configurable pagination (SIMPLE/STANDARD/COMPLEX/HEAVY thresholds)
- Unified ActionDefinition patterns across all tables
- Significant code reduction and performance improvements

### Next Level Requirements
Enterprise applications require advanced table functionality that goes beyond basic data display and pagination. These features are essential for:
- **Data Analysis**: Column resizing, sorting, filtering for data exploration
- **User Productivity**: Show/hide columns, in-cell editing for efficient workflows  
- **Large Datasets**: Virtualization, grouping for performance and organization
- **Customization**: Drag-and-drop, pinning for personalized experiences

## Prioritized Feature Roadmap

---

## 🔥 **Priority 1: High Priority (Next Release)**

### 1.1 Column Resizability
**Why High Priority**: Essential for data tables with varying content lengths

**TanStack Foundation**:
```typescript
// TanStack Table provides this out of the box
const table = useReactTable({
  enableColumnResizing: true,
  columnResizeMode: "onChange", // or "onEnd"
  columnResizeDirection: "ltr",
})
```

**Proposed ui-kit API**:
```typescript
<DataTable
  data={data}
  columns={columns}
  enableResizing={true}
  resizeMode="onChange" // "onChange" | "onEnd"
  resizeDirection="ltr" // "ltr" | "rtl"
/>
```

**Features**:
- Mouse and touch resizing support
- Performance modes (onChange vs onEnd)
- Min/max width constraints per column
- Visual resize indicators
- RTL support

### 1.2 In-Cell Editing
**Why High Priority**: Critical for data entry and productivity workflows

**TanStack Foundation**:
```typescript
// TanStack provides full editable cell support
const defaultColumn = {
  cell: ({ getValue, row, column, table }) => {
    // Full editing logic available
    return <EditableCell {...props} />
  }
}
```

**Proposed ui-kit API**:
```typescript
interface EditableColumnDef extends ColumnDef {
  editable?: boolean;
  editType?: 'text' | 'number' | 'date' | 'select' | 'custom';
  editOptions?: string[]; // for select type
  editValidation?: (value: any) => string | undefined;
  onCellEdit?: (rowIndex: number, columnId: string, value: any) => void;
}

<DataTable
  data={data}
  columns={editableColumns}
  editMode="cell" // "cell" | "row" | "table"
  onDataChange={handleDataUpdate}
/>
```

**Features**:
- Cell-level, row-level, or table-level editing modes
- Multiple input types (text, number, date, select, custom)
- Validation and error handling
- Edit/cancel functionality
- Optimistic updates

---

## 📋 **Priority 2: Medium Priority (Future Releases)**

### 2.1 Table Configuration Management (Show/Hide Columns)
**Why Medium Priority**: Improves user experience with customizable interfaces

**Proposed API**:
```typescript
<DataTable
  data={data}
  columns={columns}
  enableColumnVisibility={true}
  initialColumnVisibility={{
    columnId1: false, // hidden by default
    columnId2: true,
  }}
  onColumnVisibilityChange={handleVisibilityChange}
  showColumnToggle={true} // renders column visibility UI
/>
```

### 2.2 Column Ordering/Drag & Drop
**Why Medium Priority**: Enhances personalization and workflow optimization

**Proposed API**:
```typescript
<DataTable
  data={data}
  columns={columns}
  enableColumnOrdering={true}
  onColumnOrderChange={handleOrderChange}
  columnOrderPersistence="localStorage" // "localStorage" | "sessionStorage" | "custom"
/>
```

### 2.3 Column Pinning
**Why Medium Priority**: Useful for wide tables with key identifier columns

**Proposed API**:
```typescript
<DataTable
  data={data}
  columns={columns}
  enableColumnPinning={true}
  initialColumnPinning={{
    left: ['id', 'name'],
    right: ['actions']
  }}
/>
```

### 2.4 Grouping & Aggregation
**Why Medium Priority**: Powerful for data analysis and hierarchical data

**Proposed API**:
```typescript
<DataTable
  data={data}
  columns={columns}
  enableGrouping={true}
  enableExpanding={true}
  groupingConfig={{
    aggregationFns: {
      sum: 'sum',
      avg: 'mean',
      count: 'count'
    }
  }}
/>
```

---

## 📊 **Priority 3: Low Priority (Future Consideration)**

### 3.1 Advanced Column Filtering
**Note**: Basic filtering might be higher priority, but advanced faceted filtering is lower

**Proposed API**:
```typescript
<DataTable
  data={data}
  columns={columns}
  enableFiltering={true}
  filterMode="client" // "client" | "server"
  enableFacetedFiltering={true}
  customFilterFns={customFilters}
/>
```

### 3.2 Row Selection with Bulk Operations
**Proposed API**:
```typescript
<DataTable
  data={data}
  columns={columns}
  enableRowSelection={true}
  rowSelectionMode="multiple" // "single" | "multiple"
  onRowSelectionChange={handleSelection}
  bulkActions={[
    { id: 'delete', label: 'Delete Selected', onClick: handleBulkDelete },
    { id: 'export', label: 'Export Selected', onClick: handleBulkExport }
  ]}
/>
```

### 3.3 Advanced Sorting
**Proposed API**:
```typescript
<DataTable
  data={data}
  columns={columns}
  enableSorting={true}
  enableMultiSort={true}
  maxMultiSortColCount={3}
  customSortingFns={customSorts}
/>
```

### 3.4 Virtualization
**Proposed API**:
```typescript
<DataTable
  data={data}
  columns={columns}
  enableVirtualization={true}
  virtualRowHeight={48}
  overscan={5}
  maxHeight={600}
/>
```

### 3.5 Custom Features Extension
**Proposed API**:
```typescript
<DataTable
  data={data}
  columns={columns}
  customFeatures={[
    myCustomFeature,
    anotherCustomFeature
  ]}
  customTableOptions={{
    // Pass through to TanStack Table
  }}
/>
```

---

## Implementation Strategy

### Phase 1: High Priority Features (Priority 1)
**Target**: Next major release (v0.7.0)
- Column Resizability
- In-Cell Editing
- Enhanced pagination bug fixes

### Phase 2: Core User Experience (Priority 2)  
**Target**: Subsequent releases (v0.8.0 - v0.9.0)
- Table Configuration Management
- Column Ordering/Drag & Drop
- Column Pinning
- Grouping & Aggregation

### Phase 3: Advanced Features (Priority 3)
**Target**: Future releases (v1.0.0+)
- Advanced Filtering
- Row Selection & Bulk Operations  
- Advanced Sorting
- Virtualization
- Custom Features Extension

## Technical Architecture

### Design Principles
1. **Incremental Enhancement**: Each feature should be opt-in and not break existing implementations
2. **TanStack Compatibility**: Expose TanStack Table features while maintaining ui-kit's clean API
3. **Performance First**: Provide performance-optimized defaults with customization options
4. **TypeScript Excellence**: Full type safety for all feature configurations
5. **Accessibility**: WCAG compliance for all interactive features

### Backward Compatibility
All new features will be:
- **Opt-in**: Disabled by default to maintain current behavior
- **Non-breaking**: Existing DataTable usage continues to work unchanged
- **Progressive**: Features can be adopted individually

### Integration with Current Patterns
These features will work seamlessly with our existing:
- Smart pagination configuration system
- ActionDefinition patterns
- Performance optimization helpers

## Success Criteria

### Developer Experience
- [ ] Clean, intuitive API that maintains ui-kit's design philosophy
- [ ] Comprehensive TypeScript support
- [ ] Clear documentation with examples
- [ ] Easy migration path from basic to advanced usage

### Performance
- [ ] No performance degradation for basic usage
- [ ] Optimized rendering for advanced features
- [ ] Efficient memory usage for large datasets
- [ ] 60fps interactions for resizing, sorting, etc.

### User Experience  
- [ ] Intuitive interactions following platform conventions
- [ ] Consistent visual design with ui-kit components
- [ ] Accessible keyboard navigation
- [ ] Responsive design for mobile/desktop

## Community Impact

### Benefits
- **Position**: Establishes ui-kit as the leading React table solution
- **Adoption**: Reduces need for custom table implementations
- **Ecosystem**: Creates a rich ecosystem of table-based components
- **Performance**: Leverages TanStack Table's optimizations

### Migration Support
We commit to:
- Providing migration guides for each feature
- Offering code examples and best practices
- Supporting the community during adoption
- Contributing to documentation and examples

---

## Conclusion

This roadmap transforms ui-kit's DataTable from a solid pagination-enabled component into a comprehensive enterprise-grade table solution. By systematically exposing TanStack Table's advanced features through ui-kit's clean API, we can provide developers with powerful tools while maintaining the simplicity and consistency that makes ui-kit excellent.

The prioritized approach ensures that the most impactful features (column resizing, in-cell editing) are delivered first, while building a foundation for advanced capabilities that will serve enterprise applications for years to come.

---

**Contact**: Web Application Team  
**Available for**: Feature specification, testing, implementation collaboration, and community support 

Feature Request: Advanced DataTable Features Roadmap #62

Description

@etherisc/ui-kit Feature Request: Advanced DataTable Features Roadmap

Overview

Business Justification

Current Success

Next Level Requirements

Prioritized Feature Roadmap

🔥 Priority 1: High Priority (Next Release)

1.1 Column Resizability

1.2 In-Cell Editing

📋 Priority 2: Medium Priority (Future Releases)

2.1 Table Configuration Management (Show/Hide Columns)

2.2 Column Ordering/Drag & Drop

2.3 Column Pinning

2.4 Grouping & Aggregation

📊 Priority 3: Low Priority (Future Consideration)

3.1 Advanced Column Filtering

3.2 Row Selection with Bulk Operations

3.3 Advanced Sorting

3.4 Virtualization

3.5 Custom Features Extension

Implementation Strategy

Phase 1: High Priority Features (Priority 1)

Phase 2: Core User Experience (Priority 2)

Phase 3: Advanced Features (Priority 3)

Technical Architecture

Design Principles

Backward Compatibility

Integration with Current Patterns

Success Criteria

Developer Experience

Performance

User Experience

Community Impact

Benefits

Migration Support

Conclusion

Metadata

Metadata

Assignees

Labels

Type

Projects

Milestone

Relationships

Development

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