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class ApplicationMap
include MapLayers
include MapLayers::ViewHelpers
attr_accessor :helpers
def helpers
@helper ||= Helpers.new
end
# For example, in a controller :
#
# @map = MyMap.new(...).with_helpers(self)
#
def with_helpers(helpers)
self.helpers = helpers
self
end
class Helpers
include ActionDispatch::Routing::UrlFor
include Rails.application.routes.url_helpers
end
def projection(name)
OpenLayers::Projection.new(name)
end
def controls
[ OpenLayers::Control::LayerSwitcher.new(:ascending => true),
OpenLayers::Control::ScaleLine.new,
OpenLayers::Control::Navigation.new,
OpenLayers::Control::PanZoomBar.new,
OpenLayers::Control::Attribution.new]
end
def id
"map"
end
def map
@map ||= MapLayers::Map.new(id, :projection => projection("EPSG:900913"), :controls => controls)
end
def name
self.class.name.underscore.gsub(/_map$/, '')
end
alias_method :default_class, :name
def to_html(options = {})
if not respond_to?(:ready?) or ready?
"<div id=\"#{id}\" class=\"#{default_class}\"></div> #{map.to_html(options)}".html_safe
end
end
def kml
OpenLayers::Format::KML.new :extractStyles => true, :extractAttributes => true, :maxDepth => 2
end
def strategy_fixed
OpenLayers::Strategy::Fixed.new :preload => true
end
def google_physical
OpenLayers::Layer::Google.new("Google Physical",
:type => :"google.maps.MapTypeId.TERRAIN")
end
def google_streets
OpenLayers::Layer::Google.new "Google Streets", :numZoomLevels => 20
end
def google_hybrid
OpenLayers::Layer::Google.new "Google Hybrid", :type => :"google.maps.MapTypeId.HYBRID", :numZoomLevels => 20
end
def google_satellite
OpenLayers::Layer::Google.new "Google Satellite", :type => :"google.maps.MapTypeId.SATELLITE", :numZoomLevels => 22
end
def hover_control_display_name(layer)
OpenLayers::Control::SelectFeature.new( layer, {
:autoActivate => true,
:hover => true,
:renderIntent => "temporary",
:eventListeners => {
:featurehighlighted => JsExpr.new("function(e) {
var feature = e.feature ;
if (feature.attributes.inactive != undefined)
return;
var popup = new OpenLayers.Popup.AnchoredBubble('chicken',
new OpenLayers.LonLat(feature.geometry.x, feature.geometry.y),
null,
\"<div class='popup_hover'><b>\" + feature.attributes.name +\"</b></div> \", null, false, null);
popup.autoSize = true;
popup.displayClass = 'popup_hover';
feature.popup = popup;
map.addPopup(popup);
}"),
:featureunhighlighted => JsExpr.new("function(e) {
var feature = e.feature;
if (feature.attributes.inactive != undefined)
return;
map.removePopup(feature.popup);
feature.popup.destroy();
feature.popup = null;
}")
} } )
end
def polymorphic_path_patch( source)
config = Rails.application.config
return source unless config.respond_to?(:relative_url_root)
relative_url_root = config.relative_url_root
relative_url_root && !source.starts_with?("#{relative_url_root}/") ? "#{relative_url_root}#{source}" : source
end
def kml_layer(url_or_object, options_or_url_options = {}, options = nil)
unless options
url_options = {}
options = options_or_url_options
else
url_options = options_or_url_options
end
url_options = url_options.merge(:format => :kml)
url =
case url_or_object
when String
url_or_object
when Array
polymorphic_path_patch( helpers.polymorphic_path(url_or_object, url_options))
else
polymorphic_path_patch( helpers.polymorphic_path([url_or_object.referential, url_or_object], url_options))
end
protocol = OpenLayers::Protocol::HTTP.new :url => url, :format => kml
OpenLayers::Layer::Vector.new name, {:projection => projection("EPSG:4326"), :strategies => [strategy_fixed], :protocol => protocol, :displayInLayerSwitcher => false}.merge(options)
end
end
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