How to prevent event bubbling on child of React-Leaflet Map

问题

I have a React-Leaflet map which I am rendering a div inside.

For some reason, interacting with the contents of the div causes the map beneath to respond (eg: double-clicking will zoom the map, dragging will pan the map) - even when I'm calling e.stopPropagation() in handlers attached to the div.

As I understand it, calling stopPropagation() should prevent the DOM events from ever reaching the map itself.

Why does it appear that stopPropagation() is being ignored?

How can I render a div inside the map without it's events bubbling to the map itself?

Here is an example codepen showing the problem.

import { Map, TileLayer } from 'react-leaflet';

const MyMap = props => (
  <Map zoom={13} center={[51.505, -0.09]}>
    <TileLayer url={"http://{s}.tile.osm.org/{z}/{x}/{y}.png"} />

    {/* 
          HOW do I get this div to NOT pass it's events down to the map?!?! 
          Why does e.stopPropagation() appear to not work?
    */}
    <div 
      id="zone"
      onClick={e => e.stopPropagation()}
      onMouseDown={e => e.stopPropagation()}
      onMouseUp={e => e.stopPropagation()}
    >
      <p>Double-click or click and drag inside this square</p>
      <p>Why does the map zoom/pan?</p>
    </div>

  </Map>
);

ReactDOM.render(<MyMap />, document.getElementById('root'));

回答1:

For Leaflet map use L.DomEvent.disableClickPropagation instead which:

Adds stopPropagation to the element's 'click', 'doubleclick', 'mousedown' and 'touchstart' events.

Example

function MyMap() {
  return (
    <div>
      <Map zoom={13} center={[51.505, -0.09]}>
        <TileLayer url={"http://{s}.tile.osm.org/{z}/{x}/{y}.png"} />
        <MyInfo />
      </Map>
    </div>
  );
}

where

function MyInfo() {
  const divRef = useRef(null);

  useEffect(() => {
    L.DomEvent.disableClickPropagation(divRef.current);
  });

  return (
    <div ref={divRef} id="zone">
      <p>Double-click or click and drag inside this square</p>
      <p>Why does the map zoom/pan?</p>
    </div>
  );
}

Updated codepen

Alternative option

Another option to stop div element from propagation to map events would be to place div outside of the map element:

<div>
  <Map zoom={13} center={[51.505, -0.09]}>
    <TileLayer url={"http://{s}.tile.osm.org/{z}/{x}/{y}.png"} />
  </Map>
  <MyInfo />
</div>

where

function MyInfo() {
  return (
    <div id="zone">
      <p>Double-click or click and drag inside this square</p>
      <p>Why does the map zoom/pan?</p>
    </div>
  );
}

来源：https://stackoverflow.com/questions/56999231/how-to-prevent-event-bubbling-on-child-of-react-leaflet-map

标签

javascript

reactjs

dom

leaflet

react-leaflet