public-html2/parcoursup/components/map-view.riot

<map-view>
  <div class="map-box">
    <h3>Carte des formations</h3>
    <div class="map" ref="map"></div>
  </div>

  <script>
    export default {
      onMounted() {
        const mapElement = this.$('div[ref="map"]')

        this.map = L.map(mapElement).setView([46.8, 2.5], 6)

        L.tileLayer('https://{s}.tile.openstreetmap.org/{z}/{x}/{y}.png', {
          attribution: '&copy; OpenStreetMap contributors'
        }).addTo(this.map)

        this.markersLayer = L.layerGroup().addTo(this.map)
        this.refreshMarkers()

        // important : Leaflet calcule parfois mal la taille au montage
        setTimeout(() => {
          this.map.invalidateSize()
        }, 100)
      },

      onUpdated() {
        this.refreshMarkers()

        if (this.map) {
          setTimeout(() => {
            this.map.invalidateSize()
          }, 50)
        }
      },

      onBeforeUnmount() {
        if (this.map) {
          this.map.remove()
          this.map = null
        }
      },

      refreshMarkers() {
        if (!this.map || !this.markersLayer) {
          return
        }

        this.markersLayer.clearLayers()

        const points = []
        const results = this.props.results || []

        for (let i = 0; i < results.length; i++) {
          const f = results[i]

          if (f.latitude != null && f.longitude != null) {
            const marker = L.marker([f.latitude, f.longitude])
            marker.bindPopup(`<b>${f.nom}</b><br>${f.ville}`)
            marker.addTo(this.markersLayer)

            points.push([f.latitude, f.longitude])
          }
        }

        if (points.length > 0) {
          this.map.fitBounds(points, { padding: [20, 20] })
        } else {
          this.map.setView([46.8, 2.5], 6)
        }
      }
    }
  </script>
</map-view>