🗺️ OpenLayers Context Menu

A customizable, feature-rich context menu extension for OpenLayers maps

Quick Links: Demo • Installation • Quick Start • API • TypeScript • Examples

✨ Features

• 🎯 Easy Integration - Works seamlessly with OpenLayers 7.x - 10.x
• 🎨 Fully Customizable - Control width, icons, styles, and appearance
• 🔗 Nested Submenus - Unlimited nesting levels for complex menu structures
• 📦 Zero CSS Dependencies - Styles are bundled inline (since v6.0)
• 🎪 Event-Driven - React to beforeopen, open, and close events
• 🌐 Multiple Trigger Types - Context menu, click, or double-click
• 📱 Viewport-Aware - Automatically repositions to stay visible at screen edges
• 💪 TypeScript Support - Full type definitions included out of the box
• ⚡ Lightweight - Minimal footprint with only one dependency (tiny-emitter)
• ✅ Well Tested - 191 tests covering all functionality

🎪 Demo

Try it live:

• 🎮 CodeSandbox - Interactive demo with full source
• 📝 JSFiddle - Quick playground
• 💻 Local Examples - Webpack, Vite, and CDN examples

📦 Installation

npm (Recommended):

npm install ol ol-contextmenu

CDN:

<script src="https://cdn.jsdelivr.net/npm/ol-contextmenu"></script>

Requires: OpenLayers 7.0.0 or higher

📖 See Getting Started Guide for detailed installation instructions and setup.

🚀 Quick Start

import ContextMenu from 'ol-contextmenu';

const contextmenu = new ContextMenu({
    width: 170,
    defaultItems: true, // Includes Zoom In/Zoom Out
    items: [
        {
            text: 'Center map here',
            callback: (obj, map) => {
                map.getView().setCenter(obj.coordinate);
            },
        },
        {
            text: 'Add a Marker',
            icon: 'img/marker.png',
            callback: addMarker,
        },
        '-', // Separator
    ],
});

map.addControl(contextmenu);

📖 See Getting Started Guide for complete setup instructions and Examples for advanced patterns.

📖 Documentation

• Getting Started - Installation and basic setup
• API Reference - Complete API documentation
• TypeScript Guide - TypeScript usage and type definitions
• Examples & Recipes - Common patterns and code examples
• Troubleshooting - Common issues and solutions

📘 TypeScript

Full TypeScript support with comprehensive type definitions included:

import ContextMenu, { type Item } from 'ol-contextmenu';

const items: Item[] = [
    {
        text: 'Center map here',
        callback: (obj, map) => {
            map.getView().setCenter(obj.coordinate);
        },
    },
];

const contextmenu = new ContextMenu({ width: 170, items });

📖 See the TypeScript Guide for complete type definitions and usage patterns.

🎯 API

Constructor

new ContextMenu(options)

Options:

• width (number, default: 150) - Menu width in pixels
• defaultItems (boolean, default: true) - Include default Zoom In/Out items
• items (Item[], default: []) - Array of menu items
• eventType (string, default: 'contextmenu') - Event type to trigger menu

Methods

• clear() - Remove all items
• close() - Close menu programmatically
• extend(items) - Add multiple items
• push(item) - Add single item
• pop() / shift() - Remove items
• getDefaultItems() - Get default items array
• isOpen() - Check if menu is open
• enable() / disable() - Control menu state

Events

• beforeopen - Fired before menu opens
• open - Fired when menu opens
• close - Fired when menu closes

📖 See API Reference for complete documentation with examples.

🎨 Examples

• Examples & Recipes - Common patterns and code examples
• Local Examples - Complete working projects:
  • CDN Example - No build tools required
  • Webpack Example - Integration with Webpack
  • Vite Example - Modern setup with Vite + TypeScript

🔧 Troubleshooting

Common issues:

• Menu doesn't appear: Ensure map.addControl(contextmenu) is called
• Menu cut off: Update to v5.5.0+ for automatic viewport positioning
• TypeScript errors: Use import ContextMenu, { type Item } from 'ol-contextmenu'

📖 See the Troubleshooting Guide for detailed solutions and common issues.

🌍 Browser Support

Modern browsers supporting ES6+:

• Chrome/Edge (latest)
• Firefox (latest)
• Safari (latest)

🤝 Contributing

Contributions are welcome! We appreciate:

• 🐛 Bug reports
• 💡 Feature requests
• 📝 Documentation improvements
• ✨ Code contributions

Please read our Contributing Guidelines before submitting a PR.

Development Setup

# Clone the repository
git clone https://github.com/jonataswalker/ol-contextmenu.git
cd ol-contextmenu

# Install dependencies
npm install

# Run tests
npm test

# Start development server
npm run dev

# Build for production
npm run build

📄 License

MIT © Jonatas Walker

🙏 Acknowledgments

Built with ❤️ for the OpenLayers community.

Special thanks to all contributors who have helped improve this project.