example

🚀 Collaborative Components Examples

This directory contains example applications demonstrating the collaborative features of Go Echo LiveView.

📋 Available Examples

1. kanban_simple - Simple Kanban Board

A basic kanban board with drag-and-drop functionality.

cd kanban_simple
go run main.go
# Open http://localhost:8080

Features:

• Drag and drop cards between columns
• Add new cards
• Filter and search
• Real-time updates

2. kanban_app - Advanced Kanban Application

Full-featured project management application with multiple boards.

cd kanban_app
go run main.go
# Open http://localhost:8080

Features:

• Multiple project boards
• User assignments
• Comments and attachments
• Priority levels
• WIP limits

3. collaborative_canvas - Drawing Canvas

Real-time collaborative drawing application.

cd collaborative_canvas
go run main.go
# Open http://localhost:8080

Features:

• Multi-user drawing
• Shape tools
• Color selection
• Export to image

4. collaborative_demo - Complete Showcase

Demonstrates all collaborative components in one application.

cd collaborative_demo
go run main.go
# Open http://localhost:8080

Features:

• Canvas drawing
• Kanban boards
• Text editor
• Chat room
• Presence indicators

🛠️ Building WASM Module

All examples require the WASM module to be built:

# From project root
cd cmd/wasm/
GOOS=js GOARCH=wasm go build -o ../../assets/json.wasm

🎯 Key Concepts

Collaboration Room

Each collaborative session creates a "room" where multiple users can interact:

room := liveview.GetCollaborationHub().CreateRoom("room_id", "Room Name")

User Presence

Track active users and their activities:

participant := room.Join(userID, userName, driver)

State Synchronization

Automatically sync state changes across all participants:

room.UpdateSharedState(userID, "action", data)

Real-time Updates

Changes are broadcast to all connected users instantly via WebSockets.

📚 Architecture

┌─────────────┐     WebSocket      ┌─────────────┐
│   Browser   │◄──────────────────►│   Server    │
│             │                     │             │
│  - Canvas   │                     │ - Room Mgmt │
│  - Kanban   │     Events          │ - State     │
│  - Editor   │◄──────────────────►│ - Broadcast │
└─────────────┘                     └─────────────┘
       ▲                                   ▲
       │                                   │
       └──────── WASM Module ──────────────┘

🔧 Customization

Creating Custom Collaborative Components

1. Embed CollaborativeComponent:

type MyComponent struct {
    *liveview.ComponentDriver[*MyComponent]
    *liveview.CollaborativeComponent
    // Your fields
}

2. Initialize collaboration:

func (c *MyComponent) Start() {
    c.CollaborativeComponent = &liveview.CollaborativeComponent{
        Driver: c.ComponentDriver,
    }
    c.StartCollaboration("room_id", "user_id", "User Name")
}

3. Broadcast changes:

c.BroadcastAction("action_name", data)

4. Handle remote updates:

func (c *MyComponent) HandleRemoteUpdate(data interface{}) {
    // Process updates from other users
}

🚦 Running Multiple Examples

You can run multiple examples on different ports:

# Terminal 1
cd kanban_simple
go run main.go

# Terminal 2  
cd collaborative_canvas
PORT=8081 go run main.go

# Terminal 3
cd collaborative_demo
PORT=8082 go run main.go

📖 Documentation

For more information about the LiveView framework and collaborative features, see:

• Main README
• LiveView Documentation
• Components Documentation

🤝 Contributing

Feel free to create new examples demonstrating different use cases for collaborative components!