If no enterprises have been geocoded yet make sure Open Street Map still displays correctly.

Before it would display a gray/blank div instead of map because the map latitude, longitude couldn't be calculated without geocoded enterprises. This adds a setting so the default coordinates can be set even if no geocoded enterprises present.

app/assets/javascripts/darkswarm/directives/open_street_map.js.coffee

@@ -61,28 +61,47 @@ Darkswarm.directive 'ofnOpenStreetMap', ($window, Enterprises, EnterpriseModal,
 
     displayMap = ->
       setMapDimensions()
-      averageLatitude = averageAngle("latitude")
-      averageLongitude = averageAngle("longitude")
       zoomLevel = 6
       map = L.map('open-street-map')
       L.tileLayer.provider(openStreetMapProviderName, openStreetMapProviderOptions).addTo(map)
-      map.setView([averageLatitude, averageLongitude], zoomLevel)
+      map.setView([initialLatitude(), initialLongitude()], zoomLevel)
 
     displayEnterprises = ->
-      for enterprise in Enterprises.enterprises
-        if enterprise.latitude? && enterprise.longitude?
-          marker = buildMarker(enterprise, { lat: enterprise.latitude, lng: enterprise.longitude }, enterprise.name).addTo(map)
-          enterpriseNames.push(enterpriseName(enterprise))
-          markers.push(marker)
+      for enterprise in geocodedEnterprises()
+        marker = buildMarker(enterprise, { lat: enterprise.latitude, lng: enterprise.longitude }, enterprise.name).addTo(map)
+        enterpriseNames.push(enterpriseName(enterprise))
+        markers.push(marker)
+
+    disableSearchField = () =>
+      $('#open-street-map--search input').prop("disabled", true)
 
     displaySearchField = () ->
       new Autocomplete('#open-street-map--search',
         onSubmit: goToEnterprise
         search: searchEnterprises
       )
-      overwriteInlinePositionRelativeToPositionSearchField = ->
-        $('#open-street-map--search').css("position", "absolute")
-      overwriteInlinePositionRelativeToPositionSearchField()
+      overwriteInlinePositionRelativeToAbsoluteOnSearchField()
+      if geocodedEnterprises().length == 0
+        disableSearchField()
+
+    geocodedEnterprises = () ->
+      Enterprises.enterprises.filter (enterprise) ->
+        enterprise.latitude? && enterprise.longitude?
+
+    initialLatitude = () ->
+      if geocodedEnterprises().length > 0
+        averageAngle("latitude")
+      else
+        openStreetMapConfig.open_street_map_default_latitude || -37.4713077
+
+    initialLongitude = () ->
+      if geocodedEnterprises().length > 0
+        averageAngle("longitude")
+      else
+        openStreetMapConfig.open_street_map_default_longitude || 144.7851531
+
+    overwriteInlinePositionRelativeToAbsoluteOnSearchField = ->
+      $('#open-street-map--search').css("position", "absolute")
 
     searchEnterprises = (input) ->
       if input.length < 1

app/models/content_configuration.rb

@@ -21,6 +21,8 @@ class ContentConfiguration < Spree::Preferences::FileConfiguration
   preference :open_street_map_enabled, :boolean, default: false
   preference :open_street_map_provider_name, :string, default: "OpenStreetMap.Mapnik"
   preference :open_street_map_provider_options, :text, default: "{}"
+  preference :open_street_map_default_latitude, :string, default: "-37.4713077"
+  preference :open_street_map_default_longitude, :string, default: "144.7851531"
 
   # Producer sign-up page
   # All the following defaults using I18n don't work.

app/models/preference_sections/map_section.rb

@@ -10,7 +10,9 @@ module PreferenceSections
       [
         :open_street_map_enabled,
         :open_street_map_provider_name,
-        :open_street_map_provider_options
+        :open_street_map_provider_options,
+        :open_street_map_default_latitude,
+        :open_street_map_default_longitude
       ]
     end
   end

app/serializers/api/open_street_map_config_serializer.rb

@@ -4,7 +4,9 @@ module Api
   class OpenStreetMapConfigSerializer < ActiveModel::Serializer
     attributes :open_street_map_enabled,
                :open_street_map_provider_name,
-               :open_street_map_provider_options
+               :open_street_map_provider_options,
+               :open_street_map_default_latitude,
+               :open_street_map_default_longitude
 
     def open_street_map_enabled
       ContentConfig.open_street_map_enabled
@@ -17,5 +19,13 @@ module Api
     def open_street_map_provider_options
       ContentConfig.open_street_map_provider_options.to_json
     end
+
+    def open_street_map_default_latitude
+      ContentConfig.open_street_map_default_latitude
+    end
+
+    def open_street_map_default_longitude
+      ContentConfig.open_street_map_default_longitude
+    end
   end
 end