+ var formatOptions = {
+ checkTags: true,
+ interestingTagsExclude: ['source','source_ref','source:ref','history','attribution','created_by','tiger:county','tiger:tlid','tiger:upload_uuid']
+ };
+
+ if (areasHidden) formatOptions.areaTags = [];
+
+ if (!browseDataLayer || reload) {
+ var style = new OpenLayers.Style();
+
+ style.addRules([new OpenLayers.Rule({
+ symbolizer: {
+ Polygon: { fillColor: '#ff0000', strokeColor: '#ff0000' },
+ Line: { fillColor: '#ffff00', strokeColor: '#000000', strokeOpacity: '0.4' },
+ Point: { fillColor: '#00ff00', strokeColor: '#00ff00' }
+ }
+ })]);
+
+ if (browseDataLayer) browseDataLayer.destroyFeatures();
+
+ /*
+ * Modern browsers are quite happy showing far more than 100 features in
+ * the data browser, so increase the limit to 2000 by default, but keep
+ * it restricted to 500 for IE8 and 100 for older IEs.
+ */
+ var maxFeatures = 2000;
+
+ /*@cc_on
+ if (navigator.appVersion < 8) {
+ maxFeatures = 100;
+ } else if (navigator.appVersion < 9) {
+ maxFeatures = 500;
+ }
+ @*/
+
+ browseDataLayer = new OpenLayers.Layer.Vector("Data", {
+ strategies: [
+ new OpenLayers.Strategy.Fixed()
+ ],
+ protocol: new OpenLayers.Protocol.HTTP({
+ url: url,
+ format: new OpenLayers.Format.OSM(formatOptions),
+ maxFeatures: maxFeatures,
+ handleRead: customDataLoader
+ }),
+ projection: new OpenLayers.Projection("EPSG:4326"),
+ displayInLayerSwitcher: false,
+ styleMap: new OpenLayers.StyleMap({
+ 'default': style,
+ 'select': { strokeColor: '#0000ff', strokeWidth: 8 }
+ })
+ });
+ browseDataLayer.events.register("loadend", browseDataLayer, dataLoaded );
+ map.addLayer(browseDataLayer);
+
+ browseSelectControl = new OpenLayers.Control.SelectFeature(browseDataLayer, { onSelect: onFeatureSelect });
+ browseSelectControl.handlers.feature.stopDown = false;
+ browseSelectControl.handlers.feature.stopUp = false;
+ map.addControl(browseSelectControl);
+ browseSelectControl.activate();
+ } else {
+ browseDataLayer.destroyFeatures();
+ browseDataLayer.refresh({ url: url });
+ }