OpenLayers 3 Beginner’s Guide

More options with ol.interaction.Select

<!doctype html>
<html>
  <head>
    <title>Hello OpenStreetMap</title>
    <link rel="stylesheet" href="../assets/ol3/css/ol.css" type="text/css" />
    <link rel="stylesheet" href="../assets/css/samples.css" type="text/css" />
  </head>
  <body>
    <div id="map" class="map"></div>
    <script src="../assets/ol3/js/ol.js"></script>
    <script>

      var raster = new ol.layer.Tile({
        source: new ol.source.MapQuest({layer: 'sat'})
      });

      var selectEuropa = new ol.style.Style({
          stroke: new ol.style.Stroke({
            color: '#ff0000',
            width: 2
        })
      });

      var defaultEuropa = new ol.style.Style({
        stroke: new ol.style.Stroke({
          color: '#0000ff',
          width: 2
        })
      });

      var vectorEuropa = new ol.layer.Vector({
        id: 'europa',
        source: new ol.source.GeoJSON({
          projection: 'EPSG:3857',
          url: '../assets/data/nutsv9_lea.geojson'
        }),
        style: defaultEuropa
      });

      var defaultFrancePoints = new ol.style.Style({
        image: new ol.style.Circle({
          fill: new ol.style.Fill({
            color: 'blue'
          }),
          stroke: new ol.style.Stroke({
            color: '#ffcc00'
          }),
          radius: 8
        })
      });

      var selectFrancePoints = new ol.style.Style({
        image: new ol.style.Circle({
          fill: new ol.style.Fill({
            color: '#ff0000'
          }),
          stroke: new ol.style.Stroke({
            color: '#ffccff'
          }),
          radius: 16
        })
      });

      var vectorFrancePoints = new ol.layer.Vector({
        id: 'france',
        source: new ol.source.GeoJSON({
          projection: 'EPSG:3857',
          url: '../assets/data/france_4326.geojson'
        }),
        style: defaultFrancePoints
      });

      var selectInteraction = new ol.interaction.Select({
        layers: function(layer) {
          return layer.get('selectable') == true;
        },
        style: [selectFrancePoints, selectEuropa]
      });

      var london = ol.proj.transform([-0.12755, 51.507222], 'EPSG:4326', 'EPSG:3857');

      var view = new ol.View({
        center: london,
        zoom: 6
      });

      var map = new ol.Map({
        target: 'map'
      });

      map.addLayer(raster);
      map.addLayer(vectorEuropa);
      map.addLayer(vectorFrancePoints);
      map.setView(view);

      map.getInteractions().extend([selectInteraction]);

      vectorEuropa.set('selectable', true);
      vectorFrancePoints.set('selectable', true);

    </script>
  </body>
</html>