110 lines
3.5 KiB
JavaScript
110 lines
3.5 KiB
JavaScript
'use strict';
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// Global leaflet
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/**
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* @namespace GIS
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*/
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const GIS = {};
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const BASE_URL = location.href;
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/**
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* @param {string} mapId
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* @param {number} zoomLevel
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* @returns {Map}
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*/
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GIS.initMap = async function (mapId, zoomLevel = 15) {
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let layerSiti = await this.loadLayer('siti.geojson', '#800040');
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let layerVincoli = await this.loadLayer('vincoli.geojson');
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// TODO named parameters??
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let layerPaesistici = await this.loadLayer('paesistici.geojson', '#222', '#ff8000');
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let osmap = new L.tileLayer('https://tile.openstreetmap.org/{z}/{x}/{y}.png', {
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maxNativeZoom : 22,
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maxZoom: 22,
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attribution: '© <a href="https://www.openstreetmap.org/copyright">OpenStreetMap</a> contributors'
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});
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let map = L.map(mapId, {
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attributionControl: false,
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minZoom: 11,
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layers: [osmap, layerVincoli, layerSiti, layerPaesistici]
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}).setView([40.5492, 14.2317], zoomLevel);
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map.crs = L.CRS.EPSG4326;
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const baseMap = {
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"Mappa di base (OpenStreetMap)" : osmap
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};
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const archeo = {
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"Siti indagati" : layerSiti,
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"Vincoli archeologici" : layerVincoli,
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"Vincoli paesistici" : layerPaesistici,
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};
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let layerControl = L.control.layers(baseMap, archeo).addTo(map);
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//DEBUG
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// Il sistema di riferimento per i livelli geoJSON è EPSG3857
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}
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/**
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* @todo Distinguere tipo di geojson per contenuto popup
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* @param {string} geoJSON
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* @param {Map} map
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*/
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GIS.loadLayer = async function (geoJSON, color = '#222', fillColor = '#987db7') {
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const data = await fetch(`${BASE_URL}/geojson/${geoJSON}`)
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.then(res => res.json())
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.catch(error => console.error(`Can't load layer ${geoJSON}. Reason: ${error}`));
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// DEBUG
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console.log(data.features);
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// Show data from feature in popUp?
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const layer = new L.geoJson(data, {
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style: function (feature) {
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let style = {
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color: color,
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opacity: 0.8,
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weight: 1,
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fillColor: fillColor,
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fillOpacity: 0.8
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};
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return style;
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},
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onEachFeature: function (feature, layer) {
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layer.bindPopup(GIS.featurePopup(geoJSON, feature));
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}
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});
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return layer;
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}
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/**
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* Generate proper content for features popup
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* @todo Hard-coded names!!
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*
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* @param {string} layerName
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* @param {object} feature
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* @returns {string} The popup's content
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*/
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GIS.featurePopup = function (layerName, feature) {
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const content = {
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'vincoli.geojson' : `
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<table class="table m-2">
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<tr><td class="text-bold">Oggetto</td><td>${feature.properties.OGGETTO}</td></tr>
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<tr><td class="text-bold">Anno</td><td>${feature.properties.ANNO}</td></tr>
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<tr><td class="text-bold">Comune</td><td>${feature.properties.COMUNE}</td></tr>
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<tr><td class="text-bold">Proprietà</td><td>${feature.properties.PROPRIETA}</td></tr>
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</table>
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`,
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'paesistici.geojson' : `
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<table class="table m-2">
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<tr><td class="text-bold">Oggetto</td><td>${feature.properties.OGGETTO}</td></tr>
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<tr><td class="text-bold">Anno</td><td>${feature.properties.ANNO}</td></tr>
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<tr><td class="text-bold">Comune</td><td>${feature.properties.COMUNE}</td></tr>
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<tr><td class="text-bold">Proprietà</td><td>${feature.properties.PROPRIETA}</td></tr>
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</table>
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`,
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};
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return content[layerName];
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}
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export default GIS; |