Issue with displaying multiple checkboxes using Materialize CSS in combination with Leaflet for web-mapping overlays

I'm currently using Materialize 0.97.7 along with Leaflet 1.0.1 (the latest version).

<script src="https://cdnjs.cloudflare.com/ajax/libs/leaflet/1.0.1/leaflet-src.js"></script>
<link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/leaflet/1.0.1/leaflet.css">

Issue I'm facing is that when trying to create an overlay with multiple checkboxes to toggle items, the checkboxes do not show up, only labels appear which still function as toggles. However, I prefer having checkboxes or switches. Interestingly, when switching the CSS framework CDN to something like Bootstrap, the checkboxes do appear.

For those interested, here's the Leaflet code for debugging purposes: http://leafletjs.com/reference-1.0.0.html#layergroup

// defining items to toggle
var myItems = new L.LayerGroup();
// binding popup to each item once checkbox is selected
L.marker([lat, lon]).bindPopup('Item').addTo(myItems);
// creating overlays with multi-checkbox selection
var overlays = {
    Items: myItems
};
// adding overlays to the map
L.control.layers(null, overlays).addTo(map);

This issue seems specific to Leaflet and does not occur with other CSS frameworks.

If anyone has a fix for this problem, your help would be greatly appreciated!

Thank you

javascriptcssleafletmaterialize

Answer №1

element, it appears that Materialize CSS created a visual checkbox artifact when used with Leaflet Layers Control. The actual checkbox input is hidden within the <label> tag. This issue arises because Leaflet does not associate a proper <label> as expected by Materialize CSS. To address this, you can try overriding the Materialize CSS rules for Leaflet checkboxes to prevent them from being hidden: input[type="checkbox"].leaflet-control-layers-selector { position: inherit; left: inherit; opacity: inherit; } For better integration between Leaflet and Materialize CSS, make sure there is a correct <label> associated with the Layers Control checkbox input. This can be achieved by extending Leaflet classes or overriding specific methods. Check out the Extending Leaflet: Class Theory tutorial for guidance on how to extend Leaflet's functionality. By ensuring the proper association between the <label> and the <input type="checkbox" />, you allow Materialize CSS to create the desired checkbox replacement effect seamlessly. To see this in action, view the demo with a Materialize CSS switch instead of a checkbox at: https://jsfiddle.net/3v7hd2vx/290/ This approach involves wrapping the <label> and <input> within a <div> with the class "switch" and adding an extra "lever" placeholder for enhanced styling.

Answer №2

If you're looking to customize your map, consider including the following in your CSS code:

.leaflet-control-layers-overlays input[type='checkbox'] {
   display: block !important;
 }

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