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require 'active_support/inflector'
module Leaflet
module ViewHelpers
def map(options)
options[:tile_layer] ||= Leaflet.tile_layer
options[:attribution] ||= Leaflet.attribution
options[:max_zoom] ||= Leaflet.max_zoom
options[:subdomains] ||= Leaflet.subdomains
options[:container_id] ||= 'map'
tile_layer = options.delete(:tile_layer) || Leaflet.tile_layer
attribution = options.delete(:attribution) || Leaflet.attribution
max_zoom = options.delete(:max_zoom) || Leaflet.max_zoom
container_id = options.delete(:container_id) || 'map'
no_container = options.delete(:no_container)
center = options.delete(:center)
markers = options.delete(:markers)
circles = options.delete(:circles)
polylines = options.delete(:polylines)
geojsons = options.delete(:geojsons)
fitbounds = options.delete(:fitbounds)
subdomains = options.delete(:subdomains)
output = []
output << "<div id='#{container_id}'></div>" unless no_container
output << "<script>"
output << "var map = L.map('#{container_id}', {#{options.map{|k,v| "#{k}: #{v}"}.join(', ')}});"
if center
output << "map.setView([#{center[:latlng][0]}, #{center[:latlng][1]}], #{center[:zoom]});"
end
if markers
markers.each_with_index do |marker, index|
if marker[:icon]
icon_settings = prep_icon_settings(marker[:icon])
output << "var #{icon_settings[:name]}#{index} = L.icon({iconUrl: '#{icon_settings[:icon_url]}', shadowUrl: '#{icon_settings[:shadow_url]}', iconSize: #{icon_settings[:icon_size]}, shadowSize: #{icon_settings[:shadow_size]}, iconAnchor: #{icon_settings[:icon_anchor]}, shadowAnchor: #{icon_settings[:shadow_anchor]}, popupAnchor: #{icon_settings[:popup_anchor]}});"
output << "marker = L.marker([#{marker[:latlng][0]}, #{marker[:latlng][1]}], {icon: #{icon_settings[:name]}#{index}}).addTo(map);"
else
output << "marker = L.marker([#{marker[:latlng][0]}, #{marker[:latlng][1]}]).addTo(map);"
end
if marker[:popup]
output << "marker.bindPopup('#{escape_javascript marker[:popup]}');"
end
end
end
if circles
circles.each do |circle|
output << "L.circle(['#{circle[:latlng][0]}', '#{circle[:latlng][1]}'], #{circle[:radius]}, {
color: '#{circle[:color]}',
fillColor: '#{circle[:fillColor]}',
fillOpacity: #{circle[:fillOpacity]}
}).addTo(map);"
end
end
if polylines
polylines.each do |polyline|
_output = "L.polyline(#{polyline[:latlngs]}"
_output << "," + polyline[:options].to_json if polyline[:options]
_output << ").addTo(map);"
output << _output.gsub(/\n/,'')
end
end
if geojsons
geojsons.each do |geojson|
_output = "L.geoJSON(#{geojson[:geojson]}"
if geojson[:options]
options = geojson[:options]
on_each_feature = options.delete(:onEachFeature)
if on_each_feature
options[:onEachFeature] = ':onEachFeature'
end
_output << "," + options.to_json.gsub('":onEachFeature"', on_each_feature)
end
_output << ").addTo(map);"
output << _output.gsub(/\n/,'')
end
end
if fitbounds
output << "map.fitBounds(L.latLngBounds(#{fitbounds}));"
end
output << "L.tileLayer('#{tile_layer}', {
attribution: '#{attribution}',
maxZoom: #{max_zoom},"
if subdomains
output << " subdomains: #{subdomains},"
end
options.each do |key, value|
output << "#{key.to_s.camelize(:lower)}: '#{value}',"
end
output << "}).addTo(map);"
output << "</script>"
output.join("\n").html_safe
end
private
def prep_icon_settings(settings)
settings[:name] = 'icon' if settings[:name].nil? or settings[:name].blank?
settings[:shadow_url] = '' if settings[:shadow_url].nil?
settings[:icon_size] = [] if settings[:icon_size].nil?
settings[:shadow_size] = [] if settings[:shadow_size].nil?
settings[:icon_anchor] = [0, 0] if settings[:icon_anchor].nil?
settings[:shadow_anchor] = [0, 0] if settings[:shadow_anchor].nil?
settings[:popup_anchor] = [0, 0] if settings[:popup_anchor].nil?
return settings
end
end
end
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