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// 🍂class TileLayer.HERE |
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// Tile layer for HERE maps tiles. |
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L.TileLayer.HERE = L.TileLayer.extend({ |
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options: { |
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subdomains: '1234', |
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minZoom: 2, |
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maxZoom: 18, |
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// 🍂option scheme: String = 'normal.day' |
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// The "map scheme", as documented in the HERE API. |
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scheme: 'normal.day', |
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// 🍂option resource: String = 'maptile' |
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// The "map resource", as documented in the HERE API. |
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resource: 'maptile', |
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// 🍂option mapId: String = 'newest' |
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// Version of the map tiles to be used, or a hash of an unique map |
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mapId: 'newest', |
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// 🍂option format: String = 'png8' |
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// Image format to be used (`png8`, `png`, or `jpg`) |
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format: 'png8', |
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// 🍂option appId: String = '' |
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// Required option. The `app_id` provided as part of the HERE credentials |
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appId: '', |
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// 🍂option appCode: String = '' |
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// Required option. The `app_code` provided as part of the HERE credentials |
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appCode: '', |
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// 🍂option useCIT: boolean = false |
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// Whether to use the CIT when loading the here-maptiles |
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useCIT: false, |
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// 🍂option useHTTPS: boolean = true |
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// Whether to use HTTPS when loading the here-maptiles |
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useHTTPS: true, |
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// 🍂option language: String = '' |
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// The language of the descriptions on the maps that are loaded |
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language: '', |
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// 🍂option language: String = '' |
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// The second language of the descriptions on the maps that are loaded |
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language2: '', |
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}, |
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initialize: function initialize(options) { |
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options = L.setOptions(this, options); |
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// Decide if this scheme uses the aerial servers or the basemap servers |
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var schemeStart = options.scheme.split('.')[0]; |
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options.tileResolution = 256; |
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// {Base URL}{Path}/{resource (tile type)}/{map id}/{scheme}/{zoom}/{column}/{row}/{size}/{format} |
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// ?app_id={YOUR_APP_ID} |
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// &app_code={YOUR_APP_CODE} |
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// &{param}={value} |
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var params = [ |
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'app_id=' + encodeURIComponent(options.appId), |
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'app_code=' + encodeURIComponent(options.appCode) |
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]; |
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if(options.language) { |
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params.push('lg=' + encodeURIComponent(options.language)); |
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} |
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if(options.language2) { |
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params.push('lg2=' + encodeURIComponent(options.language2)); |
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} |
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var urlQuery = '?' + params.join('&'); |
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var path = '/maptile/2.1/{resource}/{mapId}/{scheme}/{z}/{x}/{y}/{tileResolution}/{format}' + urlQuery; |
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var attributionPath = '/maptile/2.1/copyright/{mapId}?app_id={appId}&app_code={appCode}'; |
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// make sure the CIT-url can be used |
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var baseUrl = 'maps' + (options.useCIT ? '.cit' : '') + '.api.here.com'; |
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var tileServer = 'base.' + baseUrl; |
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if (schemeStart == 'satellite' || schemeStart == 'terrain' || schemeStart == 'hybrid') { |
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tileServer = 'aerial.' + baseUrl; |
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} |
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if (options.scheme.indexOf('.traffic.') !== -1) { |
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tileServer = 'traffic' + baseUrl; |
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} |
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var protocol = 'http' + (options.useHTTPS ? 's' : ''); |
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var tileUrl = protocol + '://{s}.' + tileServer + path; |
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this._attributionUrl = L.Util.template(protocol + '://1.' + tileServer + attributionPath, this.options); |
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L.TileLayer.prototype.initialize.call(this, tileUrl, options); |
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this._attributionText = ''; |
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}, |
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onAdd: function onAdd(map) { |
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L.TileLayer.prototype.onAdd.call(this, map); |
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if (!this._attributionBBoxes) { |
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this._fetchAttributionBBoxes(); |
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} |
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}, |
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onRemove: function onRemove(map) { |
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// |
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// Remove the attribution text, and clear the cached text so it will be recalculated |
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// if/when we are shown again. |
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// |
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this._map.attributionControl.removeAttribution(this._attributionText); |
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this._attributionText = ''; |
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this._map.off('moveend zoomend resetview', this._findCopyrightBBox, this); |
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// |
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// Call the prototype last, once we've tidied up our own changes |
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// |
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L.TileLayer.prototype.onRemove.call(this, map); |
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}, |
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_fetchAttributionBBoxes: function _onMapMove() { |
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var xmlhttp = new XMLHttpRequest(); |
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xmlhttp.onreadystatechange = L.bind(function(){ |
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if (xmlhttp.readyState == 4 && xmlhttp.status == 200) { |
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this._parseAttributionBBoxes(JSON.parse(xmlhttp.responseText)); |
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} |
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}, this); |
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xmlhttp.open("GET", this._attributionUrl, true); |
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xmlhttp.send(); |
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}, |
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_parseAttributionBBoxes: function _parseAttributionBBoxes(json) { |
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if (!this._map) { return; } |
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var providers = json[this.options.scheme.split('.')[0]] || json.normal; |
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for (var i=0; i<providers.length; i++) { |
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if (providers[i].boxes) { |
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for (var j=0; j<providers[i].boxes.length; j++) { |
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var box = providers[i].boxes[j]; |
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providers[i].boxes[j] = L.latLngBounds( [ [box[0], box[1]], [box[2], box[3]] ]); |
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} |
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} |
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} |
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this._map.on('moveend zoomend resetview', this._findCopyrightBBox, this); |
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this._attributionProviders = providers; |
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this._findCopyrightBBox(); |
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}, |
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_findCopyrightBBox: function _findCopyrightBBox() { |
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if (!this._map) { return; } |
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var providers = this._attributionProviders; |
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var visibleProviders = []; |
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var zoom = this._map.getZoom(); |
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var visibleBounds = this._map.getBounds(); |
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for (var i=0; i<providers.length; i++) { |
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if (providers[i].minLevel <= zoom && providers[i].maxLevel >= zoom) { |
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if (!providers[i].boxes) { |
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// No boxes = attribution always visible |
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visibleProviders.push(providers[i]); |
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} else { |
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for (var j=0; j<providers[i].boxes.length; j++) { |
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var box = providers[i].boxes[j]; |
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if (visibleBounds.intersects(box)) { |
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visibleProviders.push(providers[i]); |
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break; |
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} |
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} |
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} |
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} |
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} |
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var attributions = ['<a href="https://legal.here.com/en-gb/terms" target="_blank" rel="noopener noreferrer">HERE maps</a>']; |
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for (var i=0; i<visibleProviders.length; i++) { |
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var provider = visibleProviders[i]; |
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attributions.push('<abbr title="' + provider.alt + '">' + provider.label + '</abbr>'); |
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} |
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var attributionText = '© ' + attributions.join(', ') + '. '; |
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if (attributionText !== this._attributionText) { |
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this._map.attributionControl.removeAttribution(this._attributionText); |
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this._map.attributionControl.addAttribution(this._attributionText = attributionText); |
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} |
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}, |
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}); |
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L.tileLayer.here = function(opts){ |
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return new L.TileLayer.HERE(opts); |
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} |
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Ysurac /
FlightAirMap
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This checks looks for references to variables that have not been declared. This is most likey a typographical error or a variable has been renamed.
To learn more about declaring variables in Javascript, see the MDN.