334 lines
11 KiB
JavaScript
334 lines
11 KiB
JavaScript
BR.LayersConfig = L.Class.extend({
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overpassFrontend: new OverpassFrontend(BR.conf.overpassBaseUrl || '//overpass-api.de/api/interpreter'),
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defaultBaseLayers: BR.confLayers.defaultBaseLayers,
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defaultOverlays: BR.confLayers.defaultOverlays,
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legacyNameToIdMap: BR.confLayers.legacyNameToIdMap,
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// hardcoded, built-in layers with an id set (for URL hash)
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builtInLayers: ['route-quality'],
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initialize: function (map) {
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this._map = map;
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this._overpassLoadingIndicator = new BR.Message('overpass_loading_indicator', { alert: false });
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this._overpassActiveRequestCount = 0;
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this._addLeafletProvidersLayers();
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this._customizeLayers();
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this.loadDefaultLayers();
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this._addLanguageDefaultLayer();
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},
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loadDefaultLayers: function () {
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if (BR.Util.localStorageAvailable()) {
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var item = localStorage.getItem('map/defaultLayers');
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if (item) {
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var defaultLayers = JSON.parse(item);
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this.defaultBaseLayers = defaultLayers.baseLayers;
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this.defaultOverlays = defaultLayers.overlays;
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}
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}
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},
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storeDefaultLayers: function (baseLayers, overlays) {
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if (BR.Util.localStorageAvailable()) {
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var defaultLayers = {
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baseLayers: baseLayers,
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overlays: overlays,
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};
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localStorage.setItem('map/defaultLayers', JSON.stringify(defaultLayers));
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}
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},
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_addLeafletProvidersLayers: function () {
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var includeList = BR.confLayers.leafletProvidersIncludeList;
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for (var i = 0; i < includeList.length; i++) {
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var id = includeList[i];
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var obj = {
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geometry: null,
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properties: {
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id: id,
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name: id.replace('.', ' '),
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dataSource: 'leaflet-providers',
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},
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type: 'Feature',
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};
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BR.layerIndex[id] = obj;
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}
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},
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_customizeLayers: function () {
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var propertyOverrides = BR.confLayers.getPropertyOverrides();
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for (id in propertyOverrides) {
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var layer = BR.layerIndex[id];
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if (layer) {
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var properties = propertyOverrides[id];
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for (key in properties) {
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var value = properties[key];
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layer.properties[key] = value;
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}
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} else {
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console.error('Layer not found: ' + id);
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}
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}
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BR.layerIndex['MtbMap'].geometry = BR.confLayers.europeGeofabrik;
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BR.layerIndex['1069'].geometry = BR.confLayers.europeGeofabrik;
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BR.layerIndex['OpenStreetMap.CH'].geometry = BR.confLayers.switzerlandPadded;
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BR.layerIndex['1017'].geometry = BR.confLayers.osmapaPl;
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},
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_addLanguageDefaultLayer: function () {
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// language code -> layer id
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var languageLayersMap = {};
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var i;
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for (i = 0; i < BR.confLayers.languageDefaultLayers.length; i++) {
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var id = BR.confLayers.languageDefaultLayers[i];
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var layer = BR.layerIndex[id];
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if (layer) {
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var layerLanguage = layer.properties['language_code'] || layer.properties['pseudo_language_code'];
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if (layerLanguage) {
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languageLayersMap[layerLanguage] = id;
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}
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}
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}
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// iterate language code hierarchy, e.g ["de-DE", "de", "en"] (includes `i18next.options.fallbackLng`)
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for (i = 0; i < i18next.languages.length; i++) {
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var language = i18next.languages[i];
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var layerId = languageLayersMap[language];
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if (layerId) {
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this.defaultBaseLayers.unshift(layerId);
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break;
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}
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}
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},
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isDefaultLayer: function (id, overlay) {
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var result = false;
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if (overlay) {
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result = this.defaultOverlays.indexOf(id) > -1;
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} else {
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result = this.defaultBaseLayers.indexOf(id) > -1;
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}
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return result;
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},
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getBaseLayers: function () {
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return this._getLayers(this.defaultBaseLayers);
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},
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getOverlays: function () {
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return this._getLayers(this.defaultOverlays);
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},
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_getLayers: function (ids) {
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var layers = {};
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for (var i = 0; i < ids.length; i++) {
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var layerId = ids[i];
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var layerData = BR.layerIndex[layerId];
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if (layerData) {
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// when key required only add if configured
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var keyObj = this.getKeyName(layerData.properties.url);
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if (!keyObj || (keyObj && BR.keys[keyObj.name])) {
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layers[layerData.properties.name] = this.createLayer(layerData);
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}
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} else {
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console.error('Layer not found: ' + layerId);
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}
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}
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return layers;
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},
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// own convention: key placeholder with prefix
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// e.g. ?api_key={keys_openrouteservice}
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getKeyName: function (url) {
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var result = null;
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// L.Util.template only matches [\w_-]
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var prefix = 'keys_';
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var regex = new RegExp('{' + prefix + '([^}]*)}');
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var found, name;
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if (!url) return result;
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found = url.match(regex);
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if (found) {
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name = found[1];
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result = {
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name: name,
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urlVar: prefix + name,
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};
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}
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return result;
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},
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_showOverpassLoadingIndicator: function () {
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this._overpassActiveRequestCount++;
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this._overpassLoadingIndicator.showLoading(i18next.t('layers.overpass-loading-indicator'));
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},
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_hideOverpassLoadingIndicator: function () {
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if (--this._overpassActiveRequestCount === 0) {
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this._overpassLoadingIndicator.hide();
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}
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},
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createOverpassLayer: function (query) {
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return Object.assign(
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new OverpassLayer({
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overpassFrontend: this.overpassFrontend,
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query: query,
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minZoom: 12,
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feature: {
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title: '{{ tags.name }}',
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body:
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'<table class="overpass-tags">{% for k, v in tags %}{% if k[:5] != "addr:" %}<tr><th>{{ k }}</th><td>{% if k matches "/email/" %}<a href="mailto:{{ v }}">{{ v }}</a>{% elseif v matches "/^http/" %}<a href="{{ v }}">{{ v }}</a>{% elseif v matches "/^www/" %}<a href="http://{{ v }}">{{ v }}</a>{% else %}{{ v }}{% endif %}</td></tr>{% endif %}{% endfor %}</table>',
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markerSymbol: null,
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style: function (overpassObject) {
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return this.defaultBaseLayers?.[0] === 'cyclosm' ? { color: 'darkorange' } : {};
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}.bind(this),
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},
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}),
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{
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onLoadStart: this._showOverpassLoadingIndicator.bind(this),
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onLoadEnd: this._hideOverpassLoadingIndicator.bind(this),
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}
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);
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},
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createLayer: function (layerData) {
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var props = layerData.properties;
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var url = props.url;
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var layer;
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// JOSM: https://{switch:a,b,c}.tile.openstreetmap.org/{zoom}/{x}/{y}.png
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// Leaflet: https://{s}.tile.openstreetmap.org/{z}/{x}/{y}.png
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function convertUrlJosm(url) {
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var rxSwitch = /{switch:[^}]*}/;
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var rxZoom = /{zoom}/g;
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var result = url.replace(rxSwitch, '{s}');
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result = result.replace(rxZoom, '{z}');
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return result;
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}
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// JOSM: https://{switch:a,b,c}.tile.openstreetmap.org/{zoom}/{x}/{y}.png
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// Leaflet: ['a','b','c']
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function getSubdomains(url) {
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var result = 'abc';
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var regex = /{switch:([^}]*)}/;
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var found = url.match(regex);
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if (found) {
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result = found[1].split(',');
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}
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return result;
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}
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function convertAttributionJosm(props) {
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var result = '';
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var attr = props.attribution;
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if (attr) {
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if (attr.html) {
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result = attr.html;
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} else if (attr.url && attr.text) {
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result = '<a href="' + attr.url + '" target="_blank" rel="noopener">' + attr.text + '</a>';
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} else if (attr.text) {
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result = attr.text;
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}
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}
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if (!result) {
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console.warn('No attribution: ' + props.id);
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}
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return result;
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}
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var options = {
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maxZoom: this._map.getMaxZoom(),
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bounds: layerData.geometry && !props.worldTiles ? L.geoJson(layerData.geometry).getBounds() : null,
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};
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if (props.mapUrl) {
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options.mapLink =
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'<a target="_blank" href="' + props.mapUrl + '">' + (props.nameShort || props.name) + '</a>';
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}
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if (props.attribution) {
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options.attribution = props.attribution;
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}
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var keyObj = this.getKeyName(url);
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if (keyObj && BR.keys[keyObj.name]) {
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options[keyObj.urlVar] = BR.keys[keyObj.name];
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}
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if (props.dataSource === 'leaflet-providers') {
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layer = L.tileLayer.provider(props.id);
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var layerOptions = L.Util.extend(options, {
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maxNativeZoom: layer.options.maxZoom,
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});
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L.setOptions(layer, layerOptions);
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} else if (props.dataSource === 'LayersCollection') {
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layer = L.tileLayer(
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url,
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L.Util.extend(options, {
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minZoom: props.minZoom || 0,
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maxNativeZoom: props.maxZoom,
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})
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);
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if (props.subdomains) {
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layer.subdomains = props.subdomains;
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}
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} else if (props.dataSource === 'OverpassAPI') {
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layer = this.createOverpassLayer(props.query);
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} else {
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// JOSM
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var josmUrl = url;
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var url = convertUrlJosm(josmUrl);
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var josmOptions = L.Util.extend(options, {
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minZoom: props.min_zoom || 0,
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maxNativeZoom: props.max_zoom,
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subdomains: getSubdomains(josmUrl),
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attribution: convertAttributionJosm(props),
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});
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if (props.type && props.type === 'wms') {
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layer = L.tileLayer.wms(
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url,
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L.Util.extend(josmOptions, {
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layers: props.layers,
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format: props.format,
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})
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);
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} else {
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layer = L.tileLayer(url, josmOptions);
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}
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}
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// Layer attribution here only as short link to original site,
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// to keep current position use placeholders: {zoom}/{lat}/{lon}
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// Copyright attribution in index.html #credits
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var getAttribution = function () {
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return this.options.mapLink;
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};
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layer.getAttribution = getAttribution;
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layer.id = props.id;
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return layer;
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},
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});
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BR.layersConfig = function (map) {
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return new BR.LayersConfig(map);
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};
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