99 lines
2.5 KiB
JavaScript
99 lines
2.5 KiB
JavaScript
BR.ControlLayers = L.Control.Layers.extend({
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getActiveLayers: function() {
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var result = [];
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for (var i = 0; i < this._layers.length; i++) {
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var obj = this._layers[i];
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if (this._map.hasLayer(obj.layer)) {
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if (obj.overlay) {
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result.push(obj);
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} else {
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result.unshift(obj);
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}
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}
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}
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return result;
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},
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getActiveBaseLayer: function() {
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var activeLayers = this.getActiveLayers();
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for (var i = 0; i < activeLayers.length; i++) {
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var obj = activeLayers[i];
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if (!obj.overlay) {
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return obj;
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}
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}
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return null;
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},
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removeActiveLayers: function() {
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var removed = [];
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for (var i = 0; i < this._layers.length; i++) {
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var obj = this._layers[i];
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if (this._map.hasLayer(obj.layer)) {
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this._map.removeLayer(obj.layer);
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removed.push(obj);
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}
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}
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return removed;
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},
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getLayer: function(name) {
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for (var i = 0; i < this._layers.length; i++) {
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var obj = this._layers[i];
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if (obj.name === name) {
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return obj;
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}
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}
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return null;
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},
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getBaseLayers: function() {
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return this._layers.filter(function(obj) {
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return !obj.overlay;
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});
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},
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activateLayer: function(obj) {
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if (!this._map.hasLayer(obj.layer)) {
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this._map.addLayer(obj.layer);
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}
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},
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activateFirstLayer: function() {
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for (var i = 0; i < this._layers.length; i++) {
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var obj = this._layers[i];
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if (!obj.overlay) {
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this.activateLayer(obj);
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break;
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}
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}
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},
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activateBaseLayerIndex: function(index) {
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var baseLayers = this.getBaseLayers();
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var obj = baseLayers[index];
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this.activateLayer(obj);
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},
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_addLayer: function(layer, name, overlay) {
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L.Control.Layers.prototype._addLayer.call(this, layer, name, overlay);
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// override z-index assignment to fix that base layers added later
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// are on top of overlays; set all base layers to 0
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if (this.options.autoZIndex && layer.setZIndex) {
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if (!overlay) {
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// undo increase in super method
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this._lastZIndex--;
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layer.setZIndex(0);
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}
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}
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}
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});
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