https://abruzzoturismo.it/modules/leaflet/modules/leaflet_markercl…/leaflet_markercluster.drupal.js?v=9.5.9

1/**
2 * Override the adding features functionality of the Leaflet module,
3 * with Marker Clustering logics.
4 */
5
6(function($, Drupal) {
7
8  /**
9   * Add Leaflet Features with Marker Clustering to the Leaflet Map.
10   *
11   * @param features
12   *   Features List definition.
13   * @param initial
14   *   Boolean to identify initial status.
15   */
16  Drupal.Leaflet.prototype.add_features = function (features, initial) {
17    const leaflet_markercluster_options = this.map_settings.leaflet_markercluster.options && this.map_settings.leaflet_markercluster.options.length > 0 ? JSON.parse(this.map_settings.leaflet_markercluster.options) : {};
18    const leaflet_markercluster_include_path = this.map_settings.leaflet_markercluster.include_path;
19
20    // Define Map Layers holder (both unclustered and clustered).
21    let layers = {
22      unclustered: {
23        // Define a base Layer Group, to hold all (ungrouped) Features Layers.
24        _base: this.create_feature_group()
25      },
26      clusters: {
27        // Define a base Layer Cluster, to hold all (ungrouped) Clustered Layers.
28        _base: new L.MarkerClusterGroup(leaflet_markercluster_options)
29      }
30    };
31
32    for (let i = 0; i < features.length; i++) {
33      let feature = features[i];
34      let lFeature;
35      // In case of a Features Group.
36      if (feature.group) {
37        // Define a named Layer Group, to hold all unClustered Features Layers.
38        layers.unclustered[feature['group_label']] = this.create_feature_group();
39        // Define a new Layer Group Cluster, to hold specific Group Layers.
40        layers.clusters[feature['group_label']] = new L.MarkerClusterGroup(leaflet_markercluster_options);
41        // Define every single Leaflet Feature of the Group.
42        for (let groupKey in feature.features) {
43          let groupFeature = feature.features[groupKey];
44          lFeature = this.create_feature(groupFeature);
45          if (lFeature !== undefined) {
46            // If the Leaflet feature is extending the Path class (Polygon,
47            // Polyline, Circle) don't add it to Markercluster if not requested,
48            // and don't add it if specifically requested not to.
49            if ((lFeature.setStyle && !leaflet_markercluster_include_path) || groupFeature['markercluster_excluded']) {
50              layers.unclustered[feature['group_label']].addLayer(lFeature);
51            }
52            else {
53              // Add the single Leaflet Feature to the Layer Group Cluster.
54              layers.clusters[feature['group_label']].addLayer(lFeature);
55            }
56
57            // Allow others to do something with the feature that was just added to the map
58            $(document).trigger('leaflet.feature', [lFeature, groupFeature, this, layers]);
59          }
60        }
61
62        // Add the Group Label Cluster Layer and/or the Group Label Base Layer as Overlay to the Map.
63        if (layers.unclustered[feature['group_label']].getLayers().length > 0 || layers.clusters[feature['group_label']].getLayers().length > 0) {
64          this.add_overlay(feature['group_label'], L.featureGroup([layers.unclustered[feature['group_label']], layers.clusters[feature['group_label']]]), feature['disabled']);
65        }
66      }
67      else {
68        lFeature = this.create_feature(feature);
69        if (lFeature !== undefined) {
70          // If the Leaflet feature is extending the Path class (Polygon,
71          // Polyline, Circle) don't add it to Markercluster if not requested,
72          // and don't add it if specifically requested not to.
73          if ((lFeature.setStyle && !leaflet_markercluster_include_path) || feature['markercluster_excluded']) {
74            layers.unclustered._base.addLayer(lFeature);
75          }
76          else {
77            layers.clusters._base.addLayer(lFeature);
78          }
79
80          // Allow others to do something with the feature that was just added to the map
81          $(document).trigger('leaflet.feature', [lFeature, feature, this]);
82        }
83      }
84    }
85
86    // Add lBaseCluster to the map
87    this.add_overlay(null, L.featureGroup([layers.unclustered._base, layers.clusters._base]), false);
88
89    // Allow plugins to do things after features have been added.

90    $(document).trigger('leaflet.features', [initial || false, this])
91  };
92
93})(jQuery, Drupal);