如何防止 Leaflet 地图元素获得焦点

Question

我有一个表单，其中包含一个leaflet地图。我想通过按tab键在元素之间移动，并且不希望地图或其元素（按钮、标记等）获得焦点。我该如何添加tabindex="-1"到地图控件和元素以防止获取焦点，或者我可以做什么来防止获取焦点？

这里是一个jsfiddle演示我的情况：http://jsfiddle.net/kedar2a/LnzN2/2/

var osmUrl = 'http://{s}.tile.osm.org/{z}/{x}/{y}.png', osmAttrib = '&copy; <a ref="http://openstreetmap.org/copyright">OpenStreetMap</a> contributors',
       osm = L.tileLayer(osmUrl, {attribution: osmAttrib  });

var map = L.map('map').setView([19.04469, 72.9258], 12).addLayer(osm);

var marker = L.marker([19.04469, 72.9258]).addTo(map);

#map {
    height: 150px;
    width: 300px;
}

<link href="https://cdnjs.cloudflare.com/ajax/libs/leaflet/1.5.1/leaflet.css" rel="stylesheet"/>
<script src="https://cdnjs.cloudflare.com/ajax/libs/leaflet/1.5.1/leaflet.js"></script>
<input type="text" autofocus />
<div id="map"></div>
<input type="text"  />

- Gringo

Answer 1

没有一种简单的解决方案，但您可以通过以下三个步骤禁用每个地图元素来实现此目标：

1. Disable focus for markers: Disable keyboard support for markers by adding keyboard:false to the marker element.

2. Add tabIndex="-1" attribute to all <a> elements located inside .leaflet-control divs

   var elements = document.querySelectorAll(".leaflet-control a");
   for (var i = 0; i < elements.length; ++i) {
     elements[i].setAttribute("tabindex", "-1");
   }
   

3. Disable focus for Close Button inside any open marker popup.

     var marker = L.marker(e.latlng, {
         draggable: true,
         keyboard: false,
         title: "Resource location",
         alt: "Resource Location",
         riseOnHover: true
       }).addTo(map)
       .bindPopup(e.latlng.toString()).on('popupopen',
         function(popup) {
           //disable focus of close button
           var elCloseButton = document.getElementsByClassName("leaflet-popup-close-button")[0];
           elCloseButton.setAttribute("tabindex", "-1");
         }).openPopup();
   

请查看我的实现：http://jsfiddle.net/trkaplan/bv763tkf/

- trkaplan

---

嗨@trkaplan，你的解决方案非常好。我唯一需要更改的是：将var elements = document.querySelectorAll(". Leaflet-control a, .leaflet-container");更改为防止.leaflet-container也获得焦点。 - Gringo