React-portal
Struggling with modals, lightboxes or loading bars in React? React-portal creates a new top-level React tree and injects its child into it. That's necessary for proper styling (especially positioning).
Features
- transports its child into a new React component and appends it to the document.body (creates a new independent React tree)
- can be opened by the prop isOpened
- can be opened after a click on an element that you pass through the prop openByClickOn (and then it takes care of the open/close state)
- doesn't leave any mess in DOM after closing
- provides its child with this.props.closePortal callback
- provides close on ESC and close on outside mouse click out of the box
- supports absolute positioned components (great for tooltips)
- no dependencies
- fully covered by tests
Demo
Try https://miksu.cz/react-portal or
git clone https://github.com/tajo/react-portalcd react-portalnpm installnpm run build:examplesopen examples/index.html
Installation
npm install react react-dom react-portal --save
Usage
import React from 'react';import ReactDOM from 'react-dom';import Portal from 'react-portal'; Component { const button1 = <button>Open portal with pseudo modal</button>; return <Portal => <PseudoModal> <h2>Pseudo Modal</h2> <p>This react component is appended to the document body</p> </PseudoModal> </Portal> ; } Component { return <div> thispropschildren <p><button =>Close this</button></p> </div> ; } ReactDOM;
Documentation - props
Always required
children : ReactElement
The portal expects one child (<Portal><Child ... /></Portal>
) that will be ported.
One of these two required
isOpened : bool
If true, the portal is open. If false, the portal is closed. It's up to you to take care of the closing (aka taking care of the state). Don't use this prop if you want to make your life easier. Use openByClickOn instead!
openByClickOn : ReactElement
The second way how to open the portal. This element will be rendered by the portal immediately
with onClick
handler that triggers portal opening. How to close the portal then? The portal provides its ported child with a callback this.props.closePortal
. Or you can use built-in portal closing methods (closeOnEsc, ... more below). Notice that you don't have to deal with the open/close state (like when using the isOpened
prop).
Optional
closeOnEsc: bool
If true, the portal can be closed by the key ESC.
closeOnOutsideClick: bool
If true, the portal can be closed by the outside mouse click.
onOpen: func(DOMNode)
This callback is called when the portal is opened and rendered (useful for animating the DOMNode).
beforeClose: func(DOMNode, removeFromDOM)
This callback is called when the closing event is triggered but it prevents normal removal from the DOM. So, you can do some DOMNode animation first and then call removeFromDOM() that removes the portal from DOM.
onClose: func
This callback is called when the portal closes and after beforeClose.
onUpdate: func
This callback is called when the portal is (re)rendered.
Tips & Tricks
- Does your modal have a fullscreen overlay and the
closeOnOutsideClick
doesn't work? There is a simple solution. - Does your inner inner component
<LevelTwo />
<Portal> <LevelOne> <LevelTwo /> </LevelOne></Portal>
also needs an access to this.props.closePortal()
? You can't just use {this.props.children}
in render method of <LevelOne>
component. You have to clone it instead:
React
Open modal programmatically
Sometimes you need to open your portal (e.g. modal) automatically. There is no button to click on. No problem, because the portal has the isOpen
prop, so you can just set it to true
or false
. However, then it's completely up to you to take care about the portal closing (ESC, outside click, no this.props.closePortal
callback...).
However, there is a nice trick how to make this happen even without isOpen
:
<Portal ="myPortal"> <Modal ="My modal"> Modal content </Modal></Portal>
thisrefsmyPortal// opens the portal, yay!
Contribution
Please, create issues and pull requests.
git clone https://github.com/tajo/react-portalcd react-portalnpm installnpm startopen http://localhost:3000
Don't forget to run this before every commit:
npm test
Credits
Inspired by the talk React.js Conf 2015 - Hype!, Ryan Florence