gem-hunter

Enhance a React component with a Higher Order Component that provides click outside detection.

Note: React 0.14 required for version >= 2.x. This assumes react and react-dom is installed in your project. Continue using version 1.x for React 0.13 support.

Note: Use version >= 2.3.0 to get rid of React.createClass warnings in React 15.5.

Installation:

npm install react-click-outside

Some component that you wish to enhance with click outside detection:

const createReactClass = require('create-react-class');
const enhanceWithClickOutside = require('react-click-outside');
const React = require('react');

const Dropdown = createReactClass({
  getInitialState() {
    return {
      isOpened: false,
    };
  },

  handleClickOutside() {
    this.toggle();
  },

  toggle() {
    this.setState({ isOpened: !this.state.isOpened });
  },

  render() {
    ...
  },
});

module.exports = enhanceWithClickOutside(Dropdown);

Note: There will be no error thrown if handleClickOutside is not implemented.

Use the wrappedRef prop to get access to the wrapped component instance. For example:

// Inside a component's render method
<Dropdown
  wrappedRef={instance => { this.toggle = instance.toggle; }}
/>

// Now you can call toggle externally
this.toggle();

The enhanceWithClickOutside function wraps the provided component in another component that registers a click handler on document for the event capturing phase. Using the event capturing phase prevents elements with a click handler that calls stopPropagation from cancelling the click event that would eventually trigger the component's handleClickOutside function.

There are some mixins that provide click outside detection functionality, but they prevent the component from implementing the componentDidMount and componentWillUnmount life cycle hooks. I recommend not using a mixin for this case.

• IE9+ due to the usage of the event capturing phase.

If the handleClickOutside handler is not firing on iOS, try adding the cursor: pointer css style to the <body> element. There are many ways to achieve this, here is just one example:

if ('ontouchstart' in document.documentElement) {
  document.body.style.cursor = 'pointer';
}

If your app already has a way for mobile detection (e.g. Modernizr), you may want to use that instead.

See issue #4 for a discussion.

MIT