function createMap(divName) {
// Create a map
- var map = L.map(divName);
+ var map = L.map(divName).fitBounds(<%= @bbox.to_json %>);
- // Create a layer switcher
- var layers = L.control.layers();
+ // Create layer and overlays variables
+ var leaflet_layers = {}
+ var leaflet_overlays = {}
// Add OpenStreetMap layer
- layers.addBaseLayer(L.tileLayer("http://{s}.tile.openstreetmap.org/{z}/{x}/{y}.png", {
+ leaflet_layers["OpenStreetMap"] = L.tileLayer("http://{s}.tile.openstreetmap.org/{z}/{x}/{y}.png", {
attribution: "© <a target=\"_parent\" href=\"http://www.openstreetmap.org\">OpenStreetMap</a> and contributors, under an <a target=\"_parent\" href=\"http://www.openstreetmap.org/copyright\">open license</a>",
maxZoom: 19
- }), "OpenStreetMap");
+ });
+
+ <% @layers.sort_by { |layer| layer[:name] }.each do |layer| -%>
- <% @layers.each do |layer| -%>
- // Add <%= layer[:name].to_json %> layer
- layers.addBaseLayer(L.tileLayer(<%= layer[:url].to_json %>, {
+ <% if layer[:overlay] -%>
+ // Create <%= layer[:name] %> overlay
+ var leaflet_overlays[<%= layer[:name] %>] = L.tileLayer(<%= layer[:url].to_json %>, {
attribution: <%= layer[:attribution].to_json %>,
maxZoom: <%= layer[:maxZoom].to_json %>
- }), <%= layer[:name].to_json %>);
+ });
+ <% if layer[:default] -%>
+ // Add <%= layer[:name] %> to map
+ leaflet_overlays[<%= layer[:name] %>].addTo(map);
<% end -%>
- <% @overlays.each do |layer| -%>
- // Add <%= layer[:name].to_json %> layer
- layers.addOverlay(L.tileLayer(<%= layer[:url].to_json %>, {
+
+ <% else %>
+ // Create <%= layer[:name] %> layer
+ var leaflet_layers[<%= layer[:name] %>] = L.tileLayer(<%= layer[:url].to_json %>, {
attribution: <%= layer[:attribution].to_json %>,
maxZoom: <%= layer[:maxZoom].to_json %>
- }), <%= layer[:name].to_json %>);
+ });
+ <% if layer[:default] -%>
+ // Add <%= layer[:name] %> to map
+ leaflet_layers[<%= layer[:name] %>].addTo(map);
<% end -%>
- // Add the layer switch to the mao
- layers.addTo(map);
- // Zoom to specified bounds
- map.fitBounds(<%= @bbox.to_json %>);
+ <% end -%>
+ <% end -%>
+
+ // Create a layer switcher
+ var layers = L.control.layers(leaflet_layers, leaflet_overlays, {collapsed:false});
+ // Add the layer switch to the mao
+ layers.addTo(map);
+ map.addControl(new L.Control.Permalink({text: 'Permalink', layers: leaflet_layers, overlays: leaflet_overlays}));
return map;
}