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Here you can Sed posuere consectetur est at lobortis. Donec ullamcorper nulla non metus auctor fringilla. Maecenas sed diam eget risus varius blandit sit amet non magna. Donec id elit non mi porta gravida at eget metus. Praesent commodo cursus magna, vel scelerisque nisl consectetur et.

HTML

            
              <bus-tracker></bus-tracker>

<script>
window.googleAPI = new Promise(function(resolve) {
	const script = document.createElement("script");
	script.src = "https://maps.googleapis.com/maps/api/js?key=AIzaSyD7POAQA-i16Vws48h4yRFVGBZzIExOAJI";
	document.body.appendChild(script);
	script.onload = resolve;
});
</script>
            
          
!

CSS

            
              html,
body {
  height: 100%;
}
body {
  font-family: 'Catamaran', sans-serif;
  background-color: #f2f2f2;
  display: flex;
  flex-direction: column;
  margin: 0;
}
bus-tracker {
  display: flex;
  flex-direction: column;
}
.top {
  flex-grow: 1;
  overflow-y: auto;
  height: 10%;
  display: flex;
  flex-direction: column;
}
.bottom {
  height: 250px;
  position: relative;
}
.gmap {
  width: 100%;
  height: 250px;
  background-color: grey;
}
.header {
  box-shadow: 0px 3px 5px 0px rgba(0, 0, 0, 0.1);
  background-color: #313131;
  color: white;
  min-height: 60px;
  display: flex;
  flex-direction: column;
  justify-content: center;
  line-height: 1.2;
}
.header h1 {
  text-align: center;
  font-size: 18px;
  text-transform: uppercase;
  letter-spacing: 1px;
  margin: 0;
}
.route-selected {
  line-height: 1;
  position: absolute;
  z-index: 1;
  text-align: right;
  background: rgba(6, 6, 6, 0.6);
  top: 10px;
  right: 10px;
  padding: 6px 10px;
  color: white;
  border-radius: 2px;
  cursor: pointer;
}
.route-selected small {
  display: block;
  font-size: 14px;
  color: #ddd;
}
.route-selected .error-message {
  font-size: 14px;
  background-color: #FF5722;
  border-radius: 10px;
  padding: 4px 8px 1px;
  margin-top: 5px;
}
.routes-list {
  padding: 20px 0;
  margin: 0;
  overflow-y: auto;
}
.routes-list li {
  list-style: none;
  cursor: pointer;
  background: white;
  border: 1px solid #dedede;
  padding: 8px 8px 6px;
  margin: 1% 2%;
  border-radius: 25px;
  color: #2196F3;
  width: 41%;
  display: inline-flex;
  font-size: 14px;
  line-height: 1.2;
}
.routes-list li:hover {
  border-color: transparent;
  background-color: #008eff;
  color: white;
  box-shadow: 0px 5px 20px 0px rgba(0, 0, 0, 0.2);
}
.routes-list li .check {
  display: none;
}
.routes-list li.active {
  color: #666;
  background-color: #e8e8e8;
}
.routes-list li.active .check {
  display: inline-block;
  margin-left: 5px;
  color: #2cc532;
}
.routes-list li.active:hover {
  border-color: #dedede;
  box-shadow: none;
}
.route-number {
  display: inline-block;
  border-right: 1px solid #dedede;
  padding-right: 5px;
  margin-right: 5px;
  min-width: 18px;
  text-align: right;
}
p {
  text-align: center;
  margin: 0;
  color: #ccc;
  font-size: 14px;
}

            
          
!

JS

            
              import { StacheElement, type } from "//unpkg.com/can@pre/core.mjs";

const proxyUrl = "https://can-cors.herokuapp.com/";
const token = "?key=piRYHjJ5D2Am39C9MxduHgRZc&format=json";
const apiRoot = "http://www.ctabustracker.com/bustime/api/v2/";
const getRoutesEnpoint = apiRoot + "getroutes" + token;
const getVehiclesEndpoint = apiRoot + "getvehicles" + token;

class GoogleMapView extends StacheElement {
  static view = `<div this:to="this.mapElement" class="gmap"></div>`;

  static props = {
    map: type.Any,
    mapElement: type.maybeConvert(HTMLElement),
    vehicles: type.Any,
    markers: type.Any
  };

  connected() {
    googleAPI.then(() => {
      this.map = new google.maps.Map(this.mapElement, {
        zoom: 10,
        center: {
          lat: 41.881,
          lng: -87.623
        }
      });
    });
    this.listenTo("vehicles", (ev, newVehicles) => {
      if (Array.isArray(this.markers)) {
        this.markers.forEach(marker => {
          marker.setMap(null);
        });
        this.markers = null;
      }
      if (newVehicles) {
        this.markers = newVehicles.map(vehicle => {
          return new google.maps.Marker({
            position: {
              lat: parseFloat(vehicle.lat),
              lng: parseFloat(vehicle.lon)
            },
            map: this.map
          });
        });
      }
    });
  }
}

customElements.define("google-map-view", GoogleMapView);

class BusTracker extends StacheElement {
  static view = `
    <div class="top">
      <div class="header">
        <h1>{{this.title}}</h1>
        {{# if(this.routesPromise.isPending) }}<p>Loading routes…</p>{{/ if }}
        {{# if(this.vehiclesPromise.isPending) }}<p>Loading vehicles…</p>{{/ if }}
      </div>
      <ul class="routes-list">
        {{# for(route of this.routesPromise.value) }}
          <li on:click="this.pickRoute(route)" {{# eq(route, this.route) }}class="active"{{/ eq }}>
            <span class="route-number">{{ route.rt }}</span>
            <span class="route-name">{{ route.rtnm }}</span>
            <span class="check">✔</span>
          </li>
        {{/ for }}
      </ul>
    </div>
    <div class="bottom">
      {{# if(this.route) }}
        <div class="route-selected" on:click="this.pickRoute(route)">
          <small>Route {{ this.route.rt }}:</small> {{ this.route.rtnm }}
          {{# if(this.vehiclesPromise.isRejected) }}
            <div class="error-message">No vehicles available for this route</div>
          {{/ if }}
        </div>
      {{/ if }}
      <google-map-view vehicles:from="this.vehiclesPromise.value"/>
    </div>
  `;

  static props = {
    title: {
      default: "Chicago CTA Bus Tracker"
    },

    routesPromise: {
      get default() {
        return fetch(proxyUrl + getRoutesEnpoint)
          .then(response => response.json())
          .then(data => data["bustime-response"].routes);
      }
    },

    route: type.Any,
    vehiclesPromise: type.Any
  };

  pickRoute(route) {
    this.route = route;
    this.vehiclesPromise = fetch(
      proxyUrl + getVehiclesEndpoint + "&rt=" + route.rt
    )
      .then(response => response.json())
      .then(data => {
        if (data["bustime-response"].error) {
          return Promise.reject(data["bustime-response"].error[0]);
        } else {
          return data["bustime-response"].vehicle;
        }
      });
  }
}

customElements.define("bus-tracker", BusTracker);

            
          
!
999px

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