https://www.cubelles.cat/front/view/js/bower_components/Leaflet/default/leaflet.clone.js

1function cloneOptions(options) {
2    var ret = {};
3    for (var i in options) {
4        var item = options[i];
5        if (item && item.clone) {
6            ret[i] = item.clone();
7        } else if (item instanceof L.Layer) {
8            ret[i] = cloneLayer(item);
9        } else {
10            ret[i] = item;
11        }
12    }
13    return ret;
14}
15
16function cloneInnerLayers(layer) {
17    var layers = [];
18    layer.eachLayer(function (inner) {
19        layers.push(cloneLayer(inner));
20    });
21    return layers;
22}
23
24function cloneLayer(layer) {
25    var options = cloneOptions(layer.options);
26
27    // we need to test for the most specific class first, i.e.
28    // Circle before CircleMarker
29
30    // Renderers
31    if (layer instanceof L.SVG) {
32        return L.svg(options);
33    }
34    if (layer instanceof L.Canvas) {
35        return L.canvas(options);
36    }
37
38    // GoogleMutant GridLayer
39    if (L.GridLayer.GoogleMutant && layer instanceof L.GridLayer.GoogleMutant) {
40        var googleLayer = L.gridLayer.googleMutant(options);
41
42        layer._GAPIPromise.then(function () {
43            var subLayers = Object.keys(layer._subLayers);
44
45            for (var i in subLayers) {
46                googleLayer.addGoogleLayer(subLayers[i]);
47            }
48        });
49
50        return googleLayer;
51    }
52
53    // Tile layers
54    if (layer instanceof L.TileLayer.WMS) {
55        return L.tileLayer.wms(layer._url, options);
56    }
57    if (layer instanceof L.TileLayer) {
58        return L.tileLayer(layer._url, options);
59    }
60    if (layer instanceof L.ImageOverlay) {
61        return L.imageOverlay(layer._url, layer._bounds, options);
62    }
63
64    // Marker layers
65    if (layer instanceof L.Marker) {
66        return L.marker(layer.getLatLng(), options);
67    }
68
69    if (layer instanceof L.Circle) {
70        return L.circle(layer.getLatLng(), layer.getRadius(), options);
71    }
72    if (layer instanceof L.CircleMarker) {
73        return L.circleMarker(layer.getLatLng(), options);
74    }
75
76    if (layer instanceof L.Rectangle) {
77        return L.rectangle(layer.getBounds(), options);
78    }
79    if (layer instanceof L.Polygon) {
80        return L.polygon(layer.getLatLngs(), options);
81    }
82    if (layer instanceof L.Polyline) {
83        return L.polyline(layer.getLatLngs(), options);
84    }
85
86    if (layer instanceof L.GeoJSON) {
87        return L.geoJson(layer.toGeoJSON(), options);
88    }
89
90    if (layer instanceof L.FeatureGroup) {
91        return L.featureGroup(cloneInnerLayers(layer));
92    }
93    if (layer instanceof L.LayerGroup) {
94        return L.layerGroup(cloneInnerLayers(layer));
95    }
96    throw 'Unknown layer, cannot clone this layer. Leaflet-version: ' + L.version;
97}
98
99if (typeof exports === 'object') {
100    module.exports = cloneLayer;
101}