1 files changed, 71 insertions, 0 deletions
diff --git a/chimere/static/leaflet-plugins/control/Permalink.Layer.js b/chimere/static/leaflet-plugins/control/Permalink.Layer.js
new file mode 100644
index 0000000..b290d91
--- /dev/null
+++ b/chimere/static/leaflet-plugins/control/Permalink.Layer.js
@@ -0,0 +1,71 @@
+//#include "Permalink.js
+
+L.Control.Permalink.include({
+	/*
+	options: {
+		useMarker: true,
+		markerOptions: {}
+	},
+	*/
+
+	initialize_layer: function() {
+		this.on('update', this._set_layer, this);
+		this.on('add', this._onadd_layer, this);
+	},
+
+	_onadd_layer: function(e) {
+		this._map.on('layeradd', this._update_layer, this);
+		this._map.on('layerremove', this._update_layer, this);
+		this._update_layer();
+	},
+
+	_update_layer: function() {
+		if (!this.options.layers) return;
+		var layer = this.options.layers.currentBaseLayer();
+		if (layer)
+			this._update({layer: layer.name});
+	},
+
+	_set_layer: function(e) {
+		var p = e.params;
+		if (!this.options.layers || !p.layer) return;
+		this.options.layers.chooseBaseLayer(p.layer);
+	}
+});
+
+L.Control.Layers.include({
+	chooseBaseLayer: function(name) {
+		var layer, obj;
+		for (var i in this._layers) {
+			if (!this._layers.hasOwnProperty(i))
+				continue;
+			obj = this._layers[i];
+			if (!obj.overlay && obj.name === name)
+				layer = obj.layer;
+		}
+		if (!layer || this._map.hasLayer(layer))
+			return;
+
+		for (var j in this._layers) {
+			if (!this._layers.hasOwnProperty(j))
+				continue;
+			obj = this._layers[j];
+			if (!obj.overlay && this._map.hasLayer(obj.layer))
+				this._map.removeLayer(obj.layer);
+		}
+		this._map.addLayer(layer);
+		this._update();
+	},
+
+	currentBaseLayer: function() {
+		for (var i in this._layers) {
+			if (!this._layers.hasOwnProperty(i))
+				continue;
+			var obj = this._layers[i];
+			if (obj.overlay) continue;
+			if (!obj.overlay && this._map.hasLayer(obj.layer))
+				return obj;
+		}
+	}
+});
+