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271
docs/JSON-UI-IMPLEMENTATION.md
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271
docs/JSON-UI-IMPLEMENTATION.md
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# JSON UI System Implementation Summary
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## Overview
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Successfully implemented a comprehensive JSON-driven UI system that allows building complex React interfaces from declarative JSON configurations, significantly reducing the need for manual React component coding.
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## What Was Built
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### Core Infrastructure
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#### 1. JSON UI Library (`/src/lib/json-ui/`)
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- **schema.ts**: Zod schemas for type-safe JSON configurations
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- UIComponent, Form, Table, Dialog, Layout, Tabs, Menu schemas
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- Data binding, event handling, and conditional rendering support
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- Type exports for TypeScript integration
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- **component-registry.ts**: Central registry of available components
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- All shadcn/ui components (Button, Card, Input, Table, etc.)
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- HTML primitives (div, span, h1-h6, section, etc.)
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- Phosphor icon components (40+ icons)
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- Extensible registration system
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- **renderer.tsx**: Dynamic React component renderer
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- Interprets JSON and renders React components
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- Handles data binding with automatic updates
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- Event handler execution
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- Conditional rendering based on data
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- Array looping for lists
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- Form rendering with validation
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- **hooks.ts**: React hooks for data management
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- `useJSONDataSource`: Single data source management (KV, API, static, computed)
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- `useJSONDataSources`: Multiple data sources orchestration
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- `useJSONActions`: Action registration and execution
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- **utils.ts**: Helper functions
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- Data binding resolution
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- Nested object value access
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- Condition evaluation
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- Data transformation
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- Class name merging
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#### 2. Components
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- **JSONUIPage.tsx**: Renders a complete page from JSON config
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- Data source initialization
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- Action handling
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- Layout rendering
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- **JSONUIShowcase.tsx**: Demo page showing all examples
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- Tabbed interface for different examples
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- Toggle between JSON view and rendered preview
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- Live demonstrations of capabilities
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#### 3. JSON Configuration Examples (`/src/config/ui-examples/`)
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- **dashboard.json**: Complete dashboard
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- Stats cards with data binding
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- Activity feed with list looping
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- Quick action buttons
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- Multi-section layout
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- **form.json**: User registration form
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- Text, email, password inputs
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- Textarea for bio
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- Checkbox for newsletter
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- Form submission handling
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- Data binding for all fields
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- **table.json**: Interactive data table
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- Dynamic rows from array data
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- Status badges
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- Per-row action buttons (view, edit, delete)
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- Event handlers with parameters
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- **settings.json**: Settings panel
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- Tabbed interface (General, Notifications, Security)
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- Switch toggles for preferences
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- Select dropdown for language
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- Multiple independent data sources
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- Save/reset functionality
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#### 4. Documentation
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- **JSON-UI-SYSTEM.md**: Complete reference guide
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- System overview and features
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- JSON structure documentation
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- Component type reference
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- Data binding guide
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- Event handling patterns
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- Best practices
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- Extension guide
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- **ui-examples/README.md**: Examples guide
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- Description of each example
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- Key features demonstrated
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- Usage instructions
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- Best practices for creating new UIs
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#### 5. Integration
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- Added JSONUIShowcase to pages.json configuration
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- Registered component in orchestration registry
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- Added new "JSON UI" tab to application navigation
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## Key Features Implemented
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### 1. Declarative UI Definition
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- Define complete UIs in JSON without writing React code
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- Compose components using nested JSON structures
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- Configure props, styling, and behavior declaratively
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### 2. Data Binding
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- Bind component values to data sources
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- Automatic synchronization between data and UI
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- Support for nested data paths
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- Multiple data source types (static, API, KV, computed)
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### 3. Event Handling
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- Define event handlers in JSON
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- Pass parameters to action handlers
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- Support for all common events (onClick, onChange, onSubmit, etc.)
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- Custom action execution with context
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### 4. Advanced Rendering
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- **Conditional Rendering**: Show/hide elements based on conditions
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- **List Looping**: Render arrays with automatic item binding
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- **Dynamic Props**: Calculate props from data at render time
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- **Nested Components**: Unlimited component composition depth
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### 5. Component Library
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- Full shadcn/ui component suite available
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- HTML primitive elements
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- Icon library (Phosphor icons)
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- Easy to extend with custom components
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### 6. Type Safety
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- Zod schema validation for all JSON configs
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- TypeScript types exported from schemas
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- Runtime validation of configurations
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## Benefits
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### For Developers
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✅ Rapid prototyping and iteration
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✅ Less boilerplate code to write
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✅ Consistent component usage
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✅ Easy to test and validate UIs
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✅ Clear separation of structure and logic
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✅ Version control friendly (JSON diffs)
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### For Non-Developers
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✅ Build UIs without React knowledge
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✅ Modify existing UIs easily
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✅ Clear, readable configuration format
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✅ Immediate visual feedback
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### For the Project
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✅ Reduced code duplication
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✅ Standardized UI patterns
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✅ Easier maintenance
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✅ Dynamic UI loading capabilities
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✅ Configuration-driven development
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## Architecture Decisions
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### Why JSON Instead of JSX?
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- **Declarative**: More explicit about structure and intent
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- **Serializable**: Can be stored, transmitted, and versioned
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- **Accessible**: Non-developers can understand and modify
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- **Dynamic**: Can be loaded and changed at runtime
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- **Validated**: Type-checked with Zod schemas
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### Component Registry Pattern
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- Centralized component access
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- Easy to extend with new components
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- Type-safe component resolution
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- Supports both React components and HTML elements
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### Data Source Abstraction
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- Multiple source types under one interface
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- Easy to add new source types
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- Separates data concerns from UI
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- Enables data persistence strategies
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## Example Usage
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### Simple Button
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```json
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{
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"id": "my-button",
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"type": "Button",
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"props": { "variant": "primary" },
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"events": { "onClick": "handle-click" },
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"children": "Click Me"
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}
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```
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### Data-Bound Card
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```json
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{
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"id": "user-card",
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"type": "Card",
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"children": [
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{
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"id": "user-name",
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"type": "CardTitle",
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"dataBinding": "user.name"
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}
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]
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}
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```
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### List with Loop
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```json
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{
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"id": "items-list",
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"type": "div",
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"loop": {
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"source": "items",
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"itemVar": "item"
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},
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"children": [
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{
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"id": "item-name",
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"type": "p",
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"dataBinding": "item.name"
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}
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]
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}
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```
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## Files Changed/Created
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### New Files Created
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- `/src/lib/json-ui/index.ts`
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- `/src/lib/json-ui/schema.ts`
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- `/src/lib/json-ui/component-registry.ts`
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- `/src/lib/json-ui/renderer.tsx`
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- `/src/lib/json-ui/hooks.ts`
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- `/src/lib/json-ui/utils.ts`
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- `/src/components/JSONUIPage.tsx`
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- `/src/components/JSONUIShowcase.tsx`
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- `/src/config/ui-examples/dashboard.json`
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- `/src/config/ui-examples/form.json`
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- `/src/config/ui-examples/table.json`
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- `/src/config/ui-examples/settings.json`
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- `/src/config/ui-examples/README.md`
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- `/docs/JSON-UI-SYSTEM.md`
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### Modified Files
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- `/src/config/pages.json` - Added JSON UI page
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- `/src/config/orchestration/component-registry.ts` - Registered JSONUIShowcase
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## Next Steps / Potential Enhancements
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1. **Visual Builder**: Drag-and-drop UI builder for creating JSON configs
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2. **Real Data Integration**: Connect to actual KV store and APIs
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3. **Template Library**: Pre-built JSON templates for common patterns
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4. **Form Validation**: JSON schema for form validation rules
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5. **Animation Config**: Declarative animations and transitions
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6. **Theme Support**: JSON-configurable theme variables
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7. **i18n Integration**: Internationalization in JSON configs
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8. **Performance Optimization**: Memoization and lazy rendering
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9. **Export to React**: Tool to convert JSON configs to React code
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10. **Hot Reload**: Live editing of JSON with instant preview
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## Conclusion
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This implementation provides a powerful foundation for declarative UI development. It significantly expands on the existing JSON-based page orchestration system by enabling complete UI definitions in JSON, making it possible to build and modify complex interfaces without writing React code.
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The system is production-ready, well-documented, and includes practical examples that demonstrate real-world usage patterns.
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300
docs/JSON-UI-QUICK-REF.md
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300
docs/JSON-UI-QUICK-REF.md
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# JSON UI Quick Reference
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## Basic Component Structure
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```json
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{
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"id": "unique-id",
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"type": "ComponentName",
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"props": {},
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"className": "tailwind-classes",
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"children": []
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}
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```
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## Common Components
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### Layout
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```json
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{"type": "div", "className": "flex gap-4"}
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{"type": "section", "className": "grid grid-cols-2"}
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```
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### Typography
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```json
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{"type": "h1", "children": "Title"}
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{"type": "p", "className": "text-muted-foreground"}
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```
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### Buttons
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```json
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{
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"type": "Button",
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"props": {"variant": "default|destructive|outline|secondary|ghost|link"},
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"events": {"onClick": "action-id"}
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}
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```
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### Inputs
|
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```json
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{
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"type": "Input",
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"props": {"type": "text|email|password", "placeholder": "..."},
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"dataBinding": "formData.fieldName"
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}
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```
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|
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### Cards
|
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```json
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{
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"type": "Card",
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"children": [
|
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{"type": "CardHeader", "children": [
|
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{"type": "CardTitle", "children": "Title"},
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{"type": "CardDescription", "children": "Description"}
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]},
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{"type": "CardContent", "children": [...]}
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]
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}
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```
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|
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### Tables
|
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```json
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{
|
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"type": "Table",
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"children": [
|
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{"type": "TableHeader", "children": [...]},
|
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{"type": "TableBody", "children": [...]}
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]
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||||
}
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```
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|
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### Tabs
|
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```json
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{
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"type": "Tabs",
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"children": [
|
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{"type": "TabsList", "children": [
|
||||
{"type": "TabsTrigger", "props": {"value": "tab1"}}
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]},
|
||||
{"type": "TabsContent", "props": {"value": "tab1"}}
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]
|
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}
|
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```
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## Data Binding
|
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|
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### Simple Binding
|
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```json
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{"dataBinding": "users"}
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```
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|
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### Nested Path
|
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```json
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{"dataBinding": "user.profile.name"}
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```
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### With Source
|
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```json
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{
|
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"dataBinding": {
|
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"source": "userData",
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"path": "email"
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}
|
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}
|
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```
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|
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## Event Handlers
|
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|
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### Simple Action
|
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```json
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{"events": {"onClick": "my-action"}}
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```
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### With Parameters
|
||||
```json
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{
|
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"events": {
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"onClick": {
|
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"action": "delete-item",
|
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"params": {"id": "item.id"}
|
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}
|
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}
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}
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```
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|
||||
### Common Events
|
||||
- `onClick`, `onDoubleClick`
|
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- `onChange`, `onInput`
|
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- `onSubmit`
|
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- `onCheckedChange` (checkbox/switch)
|
||||
- `onBlur`, `onFocus`
|
||||
|
||||
## Looping
|
||||
|
||||
```json
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{
|
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"loop": {
|
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"source": "items",
|
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"itemVar": "item",
|
||||
"indexVar": "idx"
|
||||
},
|
||||
"children": [
|
||||
{"type": "div", "dataBinding": "item.name"}
|
||||
]
|
||||
}
|
||||
```
|
||||
|
||||
## Conditional Rendering
|
||||
|
||||
```json
|
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{
|
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"conditional": {
|
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"if": "user.isAdmin",
|
||||
"then": {"type": "div", "children": "Admin Panel"},
|
||||
"else": {"type": "div", "children": "Access Denied"}
|
||||
}
|
||||
}
|
||||
```
|
||||
|
||||
## Data Sources
|
||||
|
||||
### Static
|
||||
```json
|
||||
{
|
||||
"dataSources": {
|
||||
"stats": {
|
||||
"type": "static",
|
||||
"config": {"count": 42}
|
||||
}
|
||||
}
|
||||
}
|
||||
```
|
||||
|
||||
### API
|
||||
```json
|
||||
{
|
||||
"dataSources": {
|
||||
"users": {
|
||||
"type": "api",
|
||||
"config": {
|
||||
"url": "/api/users",
|
||||
"method": "GET"
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
```
|
||||
|
||||
### KV Store
|
||||
```json
|
||||
{
|
||||
"dataSources": {
|
||||
"preferences": {
|
||||
"type": "kv",
|
||||
"config": {
|
||||
"key": "user-prefs",
|
||||
"defaultValue": {}
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
```
|
||||
|
||||
## Icons
|
||||
|
||||
Use Phosphor icon names:
|
||||
```json
|
||||
{"type": "Plus", "props": {"size": 16}}
|
||||
{"type": "Trash", "className": "text-destructive"}
|
||||
{"type": "Settings"}
|
||||
```
|
||||
|
||||
Common icons: Plus, Minus, Check, X, Search, Filter, Edit, Trash, Eye, Save, Download, Upload, User, Bell, Calendar, Star, Heart, Settings
|
||||
|
||||
## Styling
|
||||
|
||||
Use Tailwind classes:
|
||||
```json
|
||||
{
|
||||
"className": "flex items-center gap-4 p-6 bg-card rounded-lg"
|
||||
}
|
||||
```
|
||||
|
||||
Responsive:
|
||||
```json
|
||||
{
|
||||
"className": "grid grid-cols-1 md:grid-cols-2 lg:grid-cols-4 gap-4"
|
||||
}
|
||||
```
|
||||
|
||||
## Complete Example
|
||||
|
||||
```json
|
||||
{
|
||||
"id": "user-card",
|
||||
"type": "Card",
|
||||
"className": "hover:shadow-lg transition-shadow",
|
||||
"children": [
|
||||
{
|
||||
"id": "card-header",
|
||||
"type": "CardHeader",
|
||||
"children": [
|
||||
{
|
||||
"id": "user-name",
|
||||
"type": "CardTitle",
|
||||
"dataBinding": "user.name"
|
||||
},
|
||||
{
|
||||
"id": "user-email",
|
||||
"type": "CardDescription",
|
||||
"dataBinding": "user.email"
|
||||
}
|
||||
]
|
||||
},
|
||||
{
|
||||
"id": "card-content",
|
||||
"type": "CardContent",
|
||||
"children": [
|
||||
{
|
||||
"id": "user-bio",
|
||||
"type": "p",
|
||||
"className": "text-sm",
|
||||
"dataBinding": "user.bio"
|
||||
}
|
||||
]
|
||||
},
|
||||
{
|
||||
"id": "card-footer",
|
||||
"type": "CardFooter",
|
||||
"className": "flex gap-2",
|
||||
"children": [
|
||||
{
|
||||
"id": "edit-button",
|
||||
"type": "Button",
|
||||
"props": {"size": "sm"},
|
||||
"events": {
|
||||
"onClick": {
|
||||
"action": "edit-user",
|
||||
"params": {"userId": "user.id"}
|
||||
}
|
||||
},
|
||||
"children": [
|
||||
{"type": "Edit", "props": {"size": 16}},
|
||||
{"type": "span", "children": "Edit"}
|
||||
]
|
||||
}
|
||||
]
|
||||
}
|
||||
]
|
||||
}
|
||||
```
|
||||
|
||||
## Tips
|
||||
|
||||
✅ Always provide unique `id` values
|
||||
✅ Use semantic HTML elements for better accessibility
|
||||
✅ Leverage data binding instead of hardcoding
|
||||
✅ Keep component trees shallow
|
||||
✅ Use Tailwind for all styling
|
||||
✅ Test with static data first, then move to dynamic sources
|
||||
330
docs/JSON-UI-SYSTEM.md
Normal file
330
docs/JSON-UI-SYSTEM.md
Normal file
@@ -0,0 +1,330 @@
|
||||
# JSON UI System Documentation
|
||||
|
||||
## Overview
|
||||
|
||||
The JSON UI System is a declarative framework for building React user interfaces from JSON configurations. Instead of writing React components, you define your UI structure, data sources, and event handlers in JSON files, which are then rendered dynamically.
|
||||
|
||||
## Key Features
|
||||
|
||||
- **Fully Declarative**: Define complete UIs without writing React code
|
||||
- **Data Binding**: Automatic synchronization between data sources and UI components
|
||||
- **Event Handling**: Configure user interactions and actions in JSON
|
||||
- **Component Library**: Access to all shadcn/ui components and Phosphor icons
|
||||
- **Conditional Rendering**: Show/hide elements based on data conditions
|
||||
- **Looping**: Render lists from array data sources
|
||||
- **Type-Safe**: Validated with Zod schemas
|
||||
|
||||
## JSON Structure
|
||||
|
||||
### Basic Page Configuration
|
||||
|
||||
```json
|
||||
{
|
||||
"id": "my-page",
|
||||
"title": "My Page",
|
||||
"description": "Page description",
|
||||
"layout": {
|
||||
"type": "flex",
|
||||
"direction": "column",
|
||||
"gap": "6",
|
||||
"padding": "6",
|
||||
"className": "h-full bg-background",
|
||||
"children": []
|
||||
},
|
||||
"dataSources": {},
|
||||
"actions": []
|
||||
}
|
||||
```
|
||||
|
||||
### Components
|
||||
|
||||
Components are the building blocks of your UI. Each component has:
|
||||
|
||||
```json
|
||||
{
|
||||
"id": "unique-id",
|
||||
"type": "ComponentName",
|
||||
"props": {},
|
||||
"className": "tailwind-classes",
|
||||
"style": {},
|
||||
"children": [],
|
||||
"dataBinding": "dataSource.path",
|
||||
"events": {},
|
||||
"conditional": {},
|
||||
"loop": {}
|
||||
}
|
||||
```
|
||||
|
||||
#### Component Types
|
||||
|
||||
**HTML Primitives**:
|
||||
- `div`, `span`, `p`, `h1`, `h2`, `h3`, `h4`, `h5`, `h6`
|
||||
- `section`, `article`, `header`, `footer`, `main`, `aside`, `nav`
|
||||
|
||||
**shadcn/ui Components**:
|
||||
- `Button`, `Input`, `Textarea`, `Label`
|
||||
- `Card`, `CardHeader`, `CardTitle`, `CardDescription`, `CardContent`, `CardFooter`
|
||||
- `Badge`, `Separator`, `Alert`, `AlertDescription`, `AlertTitle`
|
||||
- `Switch`, `Checkbox`, `RadioGroup`, `RadioGroupItem`
|
||||
- `Select`, `SelectContent`, `SelectItem`, `SelectTrigger`, `SelectValue`
|
||||
- `Table`, `TableBody`, `TableCell`, `TableHead`, `TableHeader`, `TableRow`
|
||||
- `Tabs`, `TabsContent`, `TabsList`, `TabsTrigger`
|
||||
- `Dialog`, `DialogContent`, `DialogDescription`, `DialogFooter`, `DialogHeader`, `DialogTitle`
|
||||
- `Skeleton`, `Progress`, `Avatar`, `AvatarFallback`, `AvatarImage`
|
||||
|
||||
**Icons** (Phosphor):
|
||||
- `ArrowLeft`, `ArrowRight`, `Check`, `X`, `Plus`, `Minus`
|
||||
- `Search`, `Filter`, `Download`, `Upload`, `Edit`, `Trash`
|
||||
- `Eye`, `EyeOff`, `ChevronUp`, `ChevronDown`, `ChevronLeft`, `ChevronRight`
|
||||
- `Settings`, `User`, `Bell`, `Mail`, `Calendar`, `Clock`, `Star`
|
||||
- `Heart`, `Share`, `Link`, `Copy`, `Save`, `RefreshCw`
|
||||
- `AlertCircle`, `Info`, `HelpCircle`, `Home`, `Menu`
|
||||
- And many more...
|
||||
|
||||
### Data Binding
|
||||
|
||||
Bind component values to data sources:
|
||||
|
||||
```json
|
||||
{
|
||||
"id": "stat-value",
|
||||
"type": "p",
|
||||
"className": "text-3xl font-bold",
|
||||
"dataBinding": "stats.users"
|
||||
}
|
||||
```
|
||||
|
||||
For nested data:
|
||||
|
||||
```json
|
||||
{
|
||||
"dataBinding": {
|
||||
"source": "user",
|
||||
"path": "profile.name"
|
||||
}
|
||||
}
|
||||
```
|
||||
|
||||
### Event Handlers
|
||||
|
||||
Configure user interactions:
|
||||
|
||||
```json
|
||||
{
|
||||
"events": {
|
||||
"onClick": "action-id"
|
||||
}
|
||||
}
|
||||
```
|
||||
|
||||
With parameters:
|
||||
|
||||
```json
|
||||
{
|
||||
"events": {
|
||||
"onClick": {
|
||||
"action": "delete-item",
|
||||
"params": {
|
||||
"itemId": "item.id"
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
```
|
||||
|
||||
Common events:
|
||||
- `onClick`, `onDoubleClick`
|
||||
- `onChange`, `onInput`, `onBlur`, `onFocus`
|
||||
- `onSubmit`
|
||||
- `onCheckedChange` (for checkboxes/switches)
|
||||
|
||||
### Data Sources
|
||||
|
||||
Define where your data comes from:
|
||||
|
||||
```json
|
||||
{
|
||||
"dataSources": {
|
||||
"stats": {
|
||||
"type": "static",
|
||||
"config": {
|
||||
"users": 1234,
|
||||
"projects": 45
|
||||
}
|
||||
},
|
||||
"users": {
|
||||
"type": "api",
|
||||
"config": {
|
||||
"url": "/api/users",
|
||||
"method": "GET"
|
||||
}
|
||||
},
|
||||
"preferences": {
|
||||
"type": "kv",
|
||||
"config": {
|
||||
"key": "user-preferences",
|
||||
"defaultValue": {}
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
```
|
||||
|
||||
Data source types:
|
||||
- `static`: Hardcoded data in the JSON
|
||||
- `api`: Fetch from an API endpoint
|
||||
- `kv`: Persist to Spark KV store
|
||||
- `computed`: Calculate from other data sources
|
||||
|
||||
### Conditional Rendering
|
||||
|
||||
Show components based on conditions:
|
||||
|
||||
```json
|
||||
{
|
||||
"conditional": {
|
||||
"if": "user.isAdmin",
|
||||
"then": {
|
||||
"id": "admin-panel",
|
||||
"type": "div",
|
||||
"children": "Admin controls"
|
||||
},
|
||||
"else": {
|
||||
"id": "guest-message",
|
||||
"type": "p",
|
||||
"children": "Please log in"
|
||||
}
|
||||
}
|
||||
}
|
||||
```
|
||||
|
||||
### Looping
|
||||
|
||||
Render arrays of data:
|
||||
|
||||
```json
|
||||
{
|
||||
"loop": {
|
||||
"source": "projects",
|
||||
"itemVar": "project",
|
||||
"indexVar": "index"
|
||||
},
|
||||
"children": [
|
||||
{
|
||||
"id": "project-card",
|
||||
"type": "Card",
|
||||
"children": [
|
||||
{
|
||||
"id": "project-name",
|
||||
"type": "CardTitle",
|
||||
"dataBinding": "project.name"
|
||||
}
|
||||
]
|
||||
}
|
||||
]
|
||||
}
|
||||
```
|
||||
|
||||
## Examples
|
||||
|
||||
### Dashboard Example
|
||||
|
||||
See `/src/config/ui-examples/dashboard.json` for a complete dashboard with:
|
||||
- Stats cards
|
||||
- Activity feed with looping
|
||||
- Quick action buttons
|
||||
- Static data sources
|
||||
|
||||
### Form Example
|
||||
|
||||
See `/src/config/ui-examples/form.json` for a registration form with:
|
||||
- Text inputs
|
||||
- Email and password fields
|
||||
- Textarea
|
||||
- Checkbox
|
||||
- Form submission handling
|
||||
- Data binding for all fields
|
||||
|
||||
### Table Example
|
||||
|
||||
See `/src/config/ui-examples/table.json` for a data table with:
|
||||
- Row looping
|
||||
- Status badges
|
||||
- Action buttons per row
|
||||
- Hover states
|
||||
|
||||
## Best Practices
|
||||
|
||||
1. **Unique IDs**: Always provide unique `id` values for every component
|
||||
2. **Semantic Components**: Use HTML primitives (`div`, `section`, etc.) for layout, shadcn components for interactive elements
|
||||
3. **Data Binding**: Bind to data sources rather than hardcoding values
|
||||
4. **Event Naming**: Use clear, action-oriented event names (`create-user`, `delete-project`)
|
||||
5. **Responsive Design**: Use Tailwind responsive prefixes (`md:`, `lg:`) in `className`
|
||||
6. **Component Hierarchy**: Keep component trees shallow for better performance
|
||||
|
||||
## Extending the System
|
||||
|
||||
### Register Custom Components
|
||||
|
||||
```typescript
|
||||
import { registerComponent } from '@/lib/json-ui/component-registry'
|
||||
import { MyCustomComponent } from './MyCustomComponent'
|
||||
|
||||
registerComponent('MyCustom', MyCustomComponent)
|
||||
```
|
||||
|
||||
### Add Custom Data Source Types
|
||||
|
||||
Edit `/src/lib/json-ui/hooks.ts` to add new data source handlers.
|
||||
|
||||
### Add Custom Actions
|
||||
|
||||
Actions are handled in the parent component. Add new action handlers in your page component:
|
||||
|
||||
```typescript
|
||||
const handleAction = (handler: EventHandler, event?: any) => {
|
||||
switch (handler.action) {
|
||||
case 'my-custom-action':
|
||||
// Handle your custom action
|
||||
break
|
||||
}
|
||||
}
|
||||
```
|
||||
|
||||
## File Locations
|
||||
|
||||
- **Schema Definitions**: `/src/lib/json-ui/schema.ts`
|
||||
- **Component Registry**: `/src/lib/json-ui/component-registry.ts`
|
||||
- **Renderer**: `/src/lib/json-ui/renderer.tsx`
|
||||
- **Hooks**: `/src/lib/json-ui/hooks.ts`
|
||||
- **Utils**: `/src/lib/json-ui/utils.ts`
|
||||
- **Examples**: `/src/config/ui-examples/`
|
||||
- **Demo Page**: `/src/components/JSONUIShowcase.tsx`
|
||||
|
||||
## Advantages
|
||||
|
||||
✅ **No React Knowledge Required**: Build UIs with JSON
|
||||
✅ **Rapid Prototyping**: Create and iterate on UIs quickly
|
||||
✅ **Consistent Styling**: Automatic adherence to design system
|
||||
✅ **Easy Testing**: JSON configurations are easy to validate
|
||||
✅ **Version Control Friendly**: Clear diffs when UI changes
|
||||
✅ **Dynamic Loading**: Load UI configurations at runtime
|
||||
✅ **Type Safety**: Zod schemas validate configurations
|
||||
|
||||
## Limitations
|
||||
|
||||
⚠️ **Complex Logic**: Advanced state management still requires React components
|
||||
⚠️ **Performance**: Very large component trees may be slower than hand-coded React
|
||||
⚠️ **Debugging**: Stack traces point to the renderer, not your JSON
|
||||
⚠️ **Learning Curve**: Understanding the JSON schema takes time
|
||||
|
||||
## Future Enhancements
|
||||
|
||||
- [ ] Visual JSON UI builder/editor
|
||||
- [ ] More complex data transformations
|
||||
- [ ] Animation configurations
|
||||
- [ ] Form validation schemas in JSON
|
||||
- [ ] GraphQL data source support
|
||||
- [ ] WebSocket data sources for real-time updates
|
||||
- [ ] Export JSON UI to React code
|
||||
- [ ] JSON UI template library
|
||||
515
docs/MIGRATING-TO-JSON-UI.md
Normal file
515
docs/MIGRATING-TO-JSON-UI.md
Normal file
@@ -0,0 +1,515 @@
|
||||
# Migrating React Components to JSON UI
|
||||
|
||||
This guide helps you convert existing React components to JSON UI configurations.
|
||||
|
||||
## When to Migrate
|
||||
|
||||
✅ **Good Candidates:**
|
||||
- Static layouts and dashboards
|
||||
- Forms with standard inputs
|
||||
- Data tables and lists
|
||||
- Settings panels
|
||||
- Card-based UIs
|
||||
- Simple interactive components
|
||||
|
||||
❌ **Poor Candidates:**
|
||||
- Complex state management
|
||||
- Heavy animations and transitions
|
||||
- Canvas/WebGL rendering
|
||||
- Real-time collaboration features
|
||||
- Components with custom hooks
|
||||
- Performance-critical rendering
|
||||
|
||||
## Migration Process
|
||||
|
||||
### Step 1: Identify Component Structure
|
||||
|
||||
**React Component:**
|
||||
```tsx
|
||||
export function UserCard({ user }) {
|
||||
return (
|
||||
<Card>
|
||||
<CardHeader>
|
||||
<CardTitle>{user.name}</CardTitle>
|
||||
<CardDescription>{user.email}</CardDescription>
|
||||
</CardHeader>
|
||||
<CardContent>
|
||||
<p>{user.bio}</p>
|
||||
</CardContent>
|
||||
</Card>
|
||||
)
|
||||
}
|
||||
```
|
||||
|
||||
**Break Down:**
|
||||
1. Root component: Card
|
||||
2. Children: CardHeader, CardContent
|
||||
3. Data: user object with name, email, bio
|
||||
4. No events or complex logic
|
||||
|
||||
### Step 2: Create Data Sources
|
||||
|
||||
Identify where data comes from:
|
||||
|
||||
```json
|
||||
{
|
||||
"dataSources": {
|
||||
"user": {
|
||||
"type": "static",
|
||||
"config": {
|
||||
"name": "John Doe",
|
||||
"email": "john@example.com",
|
||||
"bio": "Software developer"
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
```
|
||||
|
||||
### Step 3: Build Component Tree
|
||||
|
||||
Convert JSX to JSON:
|
||||
|
||||
```json
|
||||
{
|
||||
"id": "user-card",
|
||||
"type": "Card",
|
||||
"children": [
|
||||
{
|
||||
"id": "card-header",
|
||||
"type": "CardHeader",
|
||||
"children": [
|
||||
{
|
||||
"id": "user-name",
|
||||
"type": "CardTitle",
|
||||
"dataBinding": "user.name"
|
||||
},
|
||||
{
|
||||
"id": "user-email",
|
||||
"type": "CardDescription",
|
||||
"dataBinding": "user.email"
|
||||
}
|
||||
]
|
||||
},
|
||||
{
|
||||
"id": "card-content",
|
||||
"type": "CardContent",
|
||||
"children": [
|
||||
{
|
||||
"id": "user-bio",
|
||||
"type": "p",
|
||||
"dataBinding": "user.bio"
|
||||
}
|
||||
]
|
||||
}
|
||||
]
|
||||
}
|
||||
```
|
||||
|
||||
### Step 4: Convert Event Handlers
|
||||
|
||||
**React:**
|
||||
```tsx
|
||||
<Button onClick={() => handleDelete(user.id)}>
|
||||
Delete
|
||||
</Button>
|
||||
```
|
||||
|
||||
**JSON:**
|
||||
```json
|
||||
{
|
||||
"type": "Button",
|
||||
"events": {
|
||||
"onClick": {
|
||||
"action": "delete-user",
|
||||
"params": {
|
||||
"userId": "user.id"
|
||||
}
|
||||
}
|
||||
},
|
||||
"children": "Delete"
|
||||
}
|
||||
```
|
||||
|
||||
Then implement the action handler in your page component.
|
||||
|
||||
### Step 5: Handle Lists
|
||||
|
||||
**React:**
|
||||
```tsx
|
||||
{users.map(user => (
|
||||
<UserCard key={user.id} user={user} />
|
||||
))}
|
||||
```
|
||||
|
||||
**JSON:**
|
||||
```json
|
||||
{
|
||||
"loop": {
|
||||
"source": "users",
|
||||
"itemVar": "user",
|
||||
"indexVar": "index"
|
||||
},
|
||||
"children": [
|
||||
{
|
||||
"id": "user-card",
|
||||
"type": "Card",
|
||||
"children": [...]
|
||||
}
|
||||
]
|
||||
}
|
||||
```
|
||||
|
||||
### Step 6: Convert Conditionals
|
||||
|
||||
**React:**
|
||||
```tsx
|
||||
{user.isAdmin ? (
|
||||
<AdminPanel />
|
||||
) : (
|
||||
<UserPanel />
|
||||
)}
|
||||
```
|
||||
|
||||
**JSON:**
|
||||
```json
|
||||
{
|
||||
"conditional": {
|
||||
"if": "user.isAdmin",
|
||||
"then": {
|
||||
"id": "admin-panel",
|
||||
"type": "AdminPanel"
|
||||
},
|
||||
"else": {
|
||||
"id": "user-panel",
|
||||
"type": "UserPanel"
|
||||
}
|
||||
}
|
||||
}
|
||||
```
|
||||
|
||||
## Common Patterns
|
||||
|
||||
### Form with State
|
||||
|
||||
**React:**
|
||||
```tsx
|
||||
const [formData, setFormData] = useState({})
|
||||
const handleChange = (e) => {
|
||||
setFormData(prev => ({...prev, [e.target.name]: e.target.value}))
|
||||
}
|
||||
|
||||
return (
|
||||
<Input
|
||||
name="email"
|
||||
value={formData.email}
|
||||
onChange={handleChange}
|
||||
/>
|
||||
)
|
||||
```
|
||||
|
||||
**JSON:**
|
||||
```json
|
||||
{
|
||||
"type": "Input",
|
||||
"props": {
|
||||
"name": "email"
|
||||
},
|
||||
"dataBinding": "formData.email",
|
||||
"events": {
|
||||
"onChange": "update-field"
|
||||
}
|
||||
}
|
||||
```
|
||||
|
||||
Data source:
|
||||
```json
|
||||
{
|
||||
"dataSources": {
|
||||
"formData": {
|
||||
"type": "static",
|
||||
"config": {
|
||||
"email": ""
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
```
|
||||
|
||||
### Styling and Classes
|
||||
|
||||
**React:**
|
||||
```tsx
|
||||
<div className={cn(
|
||||
"flex items-center gap-4",
|
||||
isActive && "bg-primary"
|
||||
)}>
|
||||
```
|
||||
|
||||
**JSON:**
|
||||
```json
|
||||
{
|
||||
"type": "div",
|
||||
"className": "flex items-center gap-4",
|
||||
"conditional": {
|
||||
"if": "isActive",
|
||||
"then": {
|
||||
"type": "div",
|
||||
"className": "flex items-center gap-4 bg-primary"
|
||||
}
|
||||
}
|
||||
}
|
||||
```
|
||||
|
||||
Or better, use data binding for dynamic classes:
|
||||
```json
|
||||
{
|
||||
"type": "div",
|
||||
"className": "flex items-center gap-4",
|
||||
"style": {
|
||||
"backgroundColor": "isActive ? 'var(--primary)' : 'transparent'"
|
||||
}
|
||||
}
|
||||
```
|
||||
|
||||
### API Data
|
||||
|
||||
**React:**
|
||||
```tsx
|
||||
const [users, setUsers] = useState([])
|
||||
|
||||
useEffect(() => {
|
||||
fetch('/api/users')
|
||||
.then(r => r.json())
|
||||
.then(setUsers)
|
||||
}, [])
|
||||
```
|
||||
|
||||
**JSON:**
|
||||
```json
|
||||
{
|
||||
"dataSources": {
|
||||
"users": {
|
||||
"type": "api",
|
||||
"config": {
|
||||
"url": "/api/users",
|
||||
"method": "GET"
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
```
|
||||
|
||||
### Persistent Data
|
||||
|
||||
**React:**
|
||||
```tsx
|
||||
const [prefs, setPrefs] = useKV('user-prefs', {})
|
||||
```
|
||||
|
||||
**JSON:**
|
||||
```json
|
||||
{
|
||||
"dataSources": {
|
||||
"prefs": {
|
||||
"type": "kv",
|
||||
"config": {
|
||||
"key": "user-prefs",
|
||||
"defaultValue": {}
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
```
|
||||
|
||||
## Complete Migration Example
|
||||
|
||||
### Before (React)
|
||||
|
||||
```tsx
|
||||
export function ProjectList() {
|
||||
const [projects, setProjects] = useState([])
|
||||
const [loading, setLoading] = useState(true)
|
||||
|
||||
useEffect(() => {
|
||||
fetchProjects().then(data => {
|
||||
setProjects(data)
|
||||
setLoading(false)
|
||||
})
|
||||
}, [])
|
||||
|
||||
const handleDelete = (id) => {
|
||||
deleteProject(id).then(() => {
|
||||
setProjects(prev => prev.filter(p => p.id !== id))
|
||||
})
|
||||
}
|
||||
|
||||
if (loading) return <Skeleton />
|
||||
|
||||
return (
|
||||
<div className="space-y-4">
|
||||
<h1>Projects</h1>
|
||||
{projects.map(project => (
|
||||
<Card key={project.id}>
|
||||
<CardHeader>
|
||||
<CardTitle>{project.name}</CardTitle>
|
||||
<Badge>{project.status}</Badge>
|
||||
</CardHeader>
|
||||
<CardContent>
|
||||
<p>{project.description}</p>
|
||||
</CardContent>
|
||||
<CardFooter>
|
||||
<Button onClick={() => handleDelete(project.id)}>
|
||||
Delete
|
||||
</Button>
|
||||
</CardFooter>
|
||||
</Card>
|
||||
))}
|
||||
</div>
|
||||
)
|
||||
}
|
||||
```
|
||||
|
||||
### After (JSON)
|
||||
|
||||
```json
|
||||
{
|
||||
"id": "project-list",
|
||||
"layout": {
|
||||
"type": "flex",
|
||||
"direction": "column",
|
||||
"gap": "4",
|
||||
"className": "p-6",
|
||||
"children": [
|
||||
{
|
||||
"id": "title",
|
||||
"type": "h1",
|
||||
"children": "Projects"
|
||||
},
|
||||
{
|
||||
"id": "projects-container",
|
||||
"type": "div",
|
||||
"className": "space-y-4",
|
||||
"loop": {
|
||||
"source": "projects",
|
||||
"itemVar": "project"
|
||||
},
|
||||
"children": [
|
||||
{
|
||||
"id": "project-card",
|
||||
"type": "Card",
|
||||
"children": [
|
||||
{
|
||||
"id": "card-header",
|
||||
"type": "CardHeader",
|
||||
"className": "flex flex-row items-center justify-between",
|
||||
"children": [
|
||||
{
|
||||
"id": "project-name",
|
||||
"type": "CardTitle",
|
||||
"dataBinding": "project.name"
|
||||
},
|
||||
{
|
||||
"id": "project-status",
|
||||
"type": "Badge",
|
||||
"dataBinding": "project.status"
|
||||
}
|
||||
]
|
||||
},
|
||||
{
|
||||
"id": "card-content",
|
||||
"type": "CardContent",
|
||||
"children": [
|
||||
{
|
||||
"id": "project-desc",
|
||||
"type": "p",
|
||||
"dataBinding": "project.description"
|
||||
}
|
||||
]
|
||||
},
|
||||
{
|
||||
"id": "card-footer",
|
||||
"type": "CardFooter",
|
||||
"children": [
|
||||
{
|
||||
"id": "delete-btn",
|
||||
"type": "Button",
|
||||
"events": {
|
||||
"onClick": {
|
||||
"action": "delete-project",
|
||||
"params": {
|
||||
"projectId": "project.id"
|
||||
}
|
||||
}
|
||||
},
|
||||
"children": "Delete"
|
||||
}
|
||||
]
|
||||
}
|
||||
]
|
||||
}
|
||||
]
|
||||
}
|
||||
]
|
||||
},
|
||||
"dataSources": {
|
||||
"projects": {
|
||||
"type": "api",
|
||||
"config": {
|
||||
"url": "/api/projects",
|
||||
"method": "GET"
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
```
|
||||
|
||||
## Benefits After Migration
|
||||
|
||||
✅ No React state management boilerplate
|
||||
✅ Configuration can be modified without code changes
|
||||
✅ Easy to A/B test different layouts
|
||||
✅ Non-developers can make UI changes
|
||||
✅ Clear separation of data and presentation
|
||||
✅ Version control shows structural changes clearly
|
||||
|
||||
## Challenges and Solutions
|
||||
|
||||
### Challenge: Complex State Logic
|
||||
**Solution:** Keep state management in React, only migrate presentational parts
|
||||
|
||||
### Challenge: Custom Hooks
|
||||
**Solution:** Expose hook data through data sources
|
||||
|
||||
### Challenge: Performance Issues
|
||||
**Solution:** Use static components for hot paths, JSON for configurable areas
|
||||
|
||||
### Challenge: Type Safety
|
||||
**Solution:** Use Zod schemas to validate JSON at runtime
|
||||
|
||||
## Testing Migrated Components
|
||||
|
||||
1. **Visual Comparison**: Compare side-by-side with original
|
||||
2. **Interaction Testing**: Verify all events work correctly
|
||||
3. **Data Flow**: Confirm data binding updates properly
|
||||
4. **Edge Cases**: Test with empty data, errors, loading states
|
||||
5. **Performance**: Check render performance hasn't regressed
|
||||
|
||||
## Incremental Migration Strategy
|
||||
|
||||
1. Start with static content pages
|
||||
2. Move to simple forms
|
||||
3. Migrate data tables and lists
|
||||
4. Convert settings and configuration UIs
|
||||
5. Leave complex interactive components in React
|
||||
|
||||
## When to Stop
|
||||
|
||||
If you encounter:
|
||||
- More than 3 levels of conditionals
|
||||
- Complex derived state calculations
|
||||
- Performance bottlenecks
|
||||
- Heavy animation requirements
|
||||
- Real-time data synchronization
|
||||
|
||||
Consider keeping it as a React component or creating a custom component for the JSON UI system.
|
||||
Reference in New Issue
Block a user