💉 React-Event-Injector‍

---

Declarative React event manager, slim as 1kb. Uses standard addEventListener underneath, and able to overpass current React API Limitations.

Please - don't overuse this library, as long "React" way to attach events is far more performant, and better working with React itself.

API

There is 3 Components, exported from this package

• EventInjector - to inject events somewhere down the tree
• PassiveListener - to inject "passive" events, which could be quite useful to make application run smoothly.
• ActiveListener - to inject non "passive" events, as long some events are passive by default.
• TargetedInjector - to inject events to the specific target.

All components will add events on mount, remove on unmount, and update changed on update if pure is not set.

Why

• 😀 to inject passive events. There is no way to inject them in "react-way".
• 😀 to inject events where you need, without relaying on bubbling or capturing or some react details.
• ☹️ to get native DOM event, not React.Synthetic.
• ☹️ to work with DOM Tree, not React.Tree.

Injection API

Children as React Element

• You may provide a single tag, as a children, or use forwardRef to forward ref to the proper target.

import {EventInjector} from 'react-event-injector';
<EventInjector onClick={event}>
 <div>It will inject onClick on me, please pass a SINGLE and HTML tag inside injector</div>
</EventInjector> 

• Capture events are also supported

import {EventInjector} from 'react-event-injector';
<EventInjector 
    onClick={event}
    // capture events are also supported
    onKeydownCapture={event} 
    // explicity set passive:false to all events. Better set to true
    settings={{passive:false}}
>
 <div>It will inject onClick on me, please pass a SINGLE and HTML tag inside injector</div>
</EventInjector> 

• You may nest Injectors one inside another. Injectors is the only way to combine, passive, active, and neutral event listeners.

All injectors implements EventTarget interface, and could be ref-ed by another injectors.

import {PassiveListener, EventInjector} from 'react-event-injector';
<PassiveListener onScroll={event}>
  <EventInjector onClick={event}>
    <EventInjector onKeydownCapture={event}>
      <div>It will inject onClick on me, please pass a SINGLE and HTML tag inside injector</div>
    </EventInjector>
  </EventInjector>  
</PassiveListener>

Children as RenderProp

You may provide a single tag, as a children, or use forwardRef to forward ref to the proper target.

import {EventInjector} from 'react-event-injector';
<EventInjector onClick={event}>
 { setRef => (
 <div ref={setRef}>
   It will inject onClick on me</div>
 }  
</EventInjector> 

EventInjector, ActiveListener and PassiveListener has the same API, and accept only children and any on-event, or on-event-Capture, as any HTML tag does. The difference is default value for settings.

TargetedInjector

• Inject events to any target provided:

import {TargetedInjector} from 'react-event-injector';
<TargetedInjector 
onClick={event}
target={this.ref}
>  

• You may use function as a target

import {TargetedInjector} from 'react-event-injector';
<TargetedInjector 
onClick={event}
target={() => document.querySelector('#element-i-need')}
>  

In the case of a function, target would be executed twice - on componentDidMount, and right after it, thus it will be able to inject events to sibling elements, not existing on mount.

Inspiration

• TargetedInjector is quite similar to react-event-listener.
• PassiveListener is quite similar to default-passive-events

Licence

MIT