Adicionando funcionalidade de clique e zoom

joepublic

Eu tenho o seguinte aplicativo (ICGC WEB PORTAL) Com base no botão clicado no topo, certos países são destacados, eu preciso de ajuda com o seguinte:<\/P>

 <\/P>

Quero mover a visualização para(?)\/centralizar no país clicado, assim como aumentar o nível de zoom.<\/P>

Esta é minha tentativa<\/P>

 <\/P>

function getExtent(){<\/P>

  var lat = map.getCenter().lat;<\/P>

  var lng = map.getCenter().lng;<\/P>

  var newCord = [lat, lng];<\/P>

  return newCord;<\/P>

}<\/P>

 <\/P>

function highlightFeature(e){<\/P>

   var newCenter = getExtent();  <--<\/P>

   var layer = e.target<\/P>

  [conteúdo omitido]<\/P>

}<\/P>

 <\/P>

function onEachFeature(feature, layer){<\/P>

  layer.on({<\/P>

     click: highlightFeature<\/P>

  });<\/P>

}<\/P>

 <\/P>

countries = L.geoJson(featureCollection, {<\/P>

   onEachFeature: onEachFeature<\/P>

}).addTo(map);<\/P>

 <\/P>

 <\/P>

Script anexado<\/P>

JohnGravois

the easiest thing to do would just be to listen for the 'click' event of your featureLayer and use that opportunity to retrieve its bounds and pass them to the map.

featureLayer.on('click', function(evt) {
    // http://leafletjs.com/reference.html#featuregroup-getbounds
    var bounds = evt.layer.getBounds()
    // http://leafletjs.com/reference.html#map-fitbounds
    map.fitBounds(bounds);
});

this is possible because 'L.esri.FeatureLayer' extends 'L.geoJson' and 'L.geoJson' extends 'L.featureGroup', which has a method 'getBounds()'.  you can find a working example here.

between all the inheritance and the fact that the documentation for Esri Leaflet and Leaflet itself are in two different places, stuff like this can be confusing until you get the hang of it.