99 lines
2.2 KiB
JavaScript
99 lines
2.2 KiB
JavaScript
/*
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* L.FeatureGroup extends L.LayerGroup by introducing mouse events and additional methods
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* shared between a group of interactive layers (like vectors or markers).
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*/
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L.FeatureGroup = L.LayerGroup.extend({
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includes: L.Mixin.Events,
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statics: {
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EVENTS: 'click dblclick mouseover mouseout mousemove contextmenu popupopen popupclose'
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},
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addLayer: function (layer) {
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if (this.hasLayer(layer)) {
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return this;
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}
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if ('on' in layer) {
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layer.on(L.FeatureGroup.EVENTS, this._propagateEvent, this);
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}
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L.LayerGroup.prototype.addLayer.call(this, layer);
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if (this._popupContent && layer.bindPopup) {
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layer.bindPopup(this._popupContent, this._popupOptions);
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}
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return this.fire('layeradd', {layer: layer});
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},
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removeLayer: function (layer) {
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if (!this.hasLayer(layer)) {
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return this;
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}
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if (layer in this._layers) {
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layer = this._layers[layer];
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}
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layer.off(L.FeatureGroup.EVENTS, this._propagateEvent, this);
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L.LayerGroup.prototype.removeLayer.call(this, layer);
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if (this._popupContent) {
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this.invoke('unbindPopup');
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}
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return this.fire('layerremove', {layer: layer});
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},
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bindPopup: function (content, options) {
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this._popupContent = content;
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this._popupOptions = options;
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return this.invoke('bindPopup', content, options);
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},
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openPopup: function (latlng) {
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// open popup on the first layer
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for (var id in this._layers) {
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this._layers[id].openPopup(latlng);
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break;
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}
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return this;
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},
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setStyle: function (style) {
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return this.invoke('setStyle', style);
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},
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bringToFront: function () {
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return this.invoke('bringToFront');
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},
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bringToBack: function () {
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return this.invoke('bringToBack');
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},
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getBounds: function () {
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var bounds = new L.LatLngBounds();
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this.eachLayer(function (layer) {
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bounds.extend(layer instanceof L.Marker ? layer.getLatLng() : layer.getBounds());
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});
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return bounds;
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},
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_propagateEvent: function (e) {
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e = L.extend({}, e, {
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layer: e.target,
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target: this
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});
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this.fire(e.type, e);
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}
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});
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L.featureGroup = function (layers) {
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return new L.FeatureGroup(layers);
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};
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