import Credit from '../Core/Credit.js';
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import defaultValue from '../Core/defaultValue.js';
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import defined from '../Core/defined.js';
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import DeveloperError from '../Core/DeveloperError.js';
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import MapboxApi from '../Core/MapboxApi.js';
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import Resource from '../Core/Resource.js';
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import UrlTemplateImageryProvider from './UrlTemplateImageryProvider.js';
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var trailingSlashRegex = /\/$/;
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var defaultCredit = new Credit('© <a href="https://www.mapbox.com/about/maps/">Mapbox</a> © <a href="http://www.openstreetmap.org/copyright">OpenStreetMap</a> <strong><a href="https://www.mapbox.com/map-feedback/">Improve this map</a></strong>');
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/**
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* Provides tiled imagery hosted by Mapbox.
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*
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* @alias MapboxImageryProvider
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* @constructor
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*
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* @param {Object} [options] Object with the following properties:
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* @param {String} [options.url='https://api.mapbox.com/v4/'] The Mapbox server url.
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* @param {String} options.mapId The Mapbox Map ID.
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* @param {String} [options.accessToken] The public access token for the imagery.
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* @param {String} [options.format='png'] The format of the image request.
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* @param {Ellipsoid} [options.ellipsoid] The ellipsoid. If not specified, the WGS84 ellipsoid is used.
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* @param {Number} [options.minimumLevel=0] The minimum level-of-detail supported by the imagery provider. Take care when specifying
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* this that the number of tiles at the minimum level is small, such as four or less. A larger number is likely
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* to result in rendering problems.
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* @param {Number} [options.maximumLevel] The maximum level-of-detail supported by the imagery provider, or undefined if there is no limit.
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* @param {Rectangle} [options.rectangle=Rectangle.MAX_VALUE] The rectangle, in radians, covered by the image.
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* @param {Credit|String} [options.credit] A credit for the data source, which is displayed on the canvas.
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*
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*
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* @example
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* // Mapbox tile provider
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* var mapbox = new Cesium.MapboxImageryProvider({
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* mapId: 'mapbox.streets',
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* accessToken: 'thisIsMyAccessToken'
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* });
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*
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* @see {@link https://www.mapbox.com/developers/api/maps/#tiles}
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* @see {@link https://www.mapbox.com/developers/api/#access-tokens}
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*/
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function MapboxImageryProvider(options) {
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options = defaultValue(options, defaultValue.EMPTY_OBJECT);
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var mapId = options.mapId;
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//>>includeStart('debug', pragmas.debug);
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if (!defined(mapId)) {
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throw new DeveloperError('options.mapId is required.');
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}
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//>>includeEnd('debug');
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var resource = Resource.createIfNeeded(defaultValue(options.url, 'https://{s}.tiles.mapbox.com/v4/'));
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var accessToken = MapboxApi.getAccessToken(options.accessToken);
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this._mapId = mapId;
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this._accessToken = accessToken;
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this._accessTokenErrorCredit = Credit.clone(MapboxApi.getErrorCredit(options.accessToken));
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var format = defaultValue(options.format, 'png');
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if (!/\./.test(format)) {
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format = '.' + format;
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}
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this._format = format;
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var templateUrl = resource.getUrlComponent();
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if (!trailingSlashRegex.test(templateUrl)) {
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templateUrl += '/';
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}
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templateUrl += mapId + '/{z}/{x}/{y}' + this._format;
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resource.url = templateUrl;
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resource.setQueryParameters({
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access_token: accessToken
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});
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var credit;
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if (defined(options.credit)) {
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credit = options.credit;
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if (typeof credit === 'string') {
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credit = new Credit(credit);
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}
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} else {
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credit = defaultCredit;
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}
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this._resource = resource;
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this._imageryProvider = new UrlTemplateImageryProvider({
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url: resource,
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credit: credit,
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ellipsoid: options.ellipsoid,
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minimumLevel: options.minimumLevel,
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maximumLevel: options.maximumLevel,
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rectangle: options.rectangle
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});
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}
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Object.defineProperties(MapboxImageryProvider.prototype, {
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/**
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* Gets the URL of the Mapbox server.
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* @memberof MapboxImageryProvider.prototype
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* @type {String}
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* @readonly
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*/
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url : {
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get : function() {
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return this._imageryProvider.url;
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}
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},
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/**
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* Gets a value indicating whether or not the provider is ready for use.
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* @memberof MapboxImageryProvider.prototype
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* @type {Boolean}
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* @readonly
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*/
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ready : {
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get : function() {
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return this._imageryProvider.ready;
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}
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},
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/**
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* Gets a promise that resolves to true when the provider is ready for use.
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* @memberof MapboxImageryProvider.prototype
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* @type {Promise.<Boolean>}
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* @readonly
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*/
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readyPromise : {
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get : function() {
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return this._imageryProvider.readyPromise;
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}
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},
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/**
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* Gets the rectangle, in radians, of the imagery provided by the instance. This function should
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* not be called before {@link MapboxImageryProvider#ready} returns true.
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* @memberof MapboxImageryProvider.prototype
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* @type {Rectangle}
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* @readonly
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*/
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rectangle: {
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get : function() {
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return this._imageryProvider.rectangle;
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}
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},
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/**
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* Gets the width of each tile, in pixels. This function should
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* not be called before {@link MapboxImageryProvider#ready} returns true.
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* @memberof MapboxImageryProvider.prototype
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* @type {Number}
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* @readonly
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*/
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tileWidth : {
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get : function() {
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return this._imageryProvider.tileWidth;
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}
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},
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/**
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* Gets the height of each tile, in pixels. This function should
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* not be called before {@link MapboxImageryProvider#ready} returns true.
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* @memberof MapboxImageryProvider.prototype
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* @type {Number}
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* @readonly
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*/
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tileHeight : {
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get : function() {
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return this._imageryProvider.tileHeight;
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}
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},
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/**
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* Gets the maximum level-of-detail that can be requested. This function should
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* not be called before {@link MapboxImageryProvider#ready} returns true.
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* @memberof MapboxImageryProvider.prototype
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* @type {Number}
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* @readonly
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*/
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maximumLevel : {
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get : function() {
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return this._imageryProvider.maximumLevel;
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}
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},
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/**
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* Gets the minimum level-of-detail that can be requested. This function should
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* not be called before {@link MapboxImageryProvider#ready} returns true. Generally,
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* a minimum level should only be used when the rectangle of the imagery is small
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* enough that the number of tiles at the minimum level is small. An imagery
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* provider with more than a few tiles at the minimum level will lead to
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* rendering problems.
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* @memberof MapboxImageryProvider.prototype
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* @type {Number}
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* @readonly
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*/
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minimumLevel : {
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get : function() {
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return this._imageryProvider.minimumLevel;
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}
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},
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/**
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* Gets the tiling scheme used by the provider. This function should
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* not be called before {@link MapboxImageryProvider#ready} returns true.
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* @memberof MapboxImageryProvider.prototype
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* @type {TilingScheme}
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* @readonly
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*/
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tilingScheme : {
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get : function() {
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return this._imageryProvider.tilingScheme;
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}
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},
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/**
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* Gets the tile discard policy. If not undefined, the discard policy is responsible
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* for filtering out "missing" tiles via its shouldDiscardImage function. If this function
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* returns undefined, no tiles are filtered. This function should
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* not be called before {@link MapboxImageryProvider#ready} returns true.
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* @memberof MapboxImageryProvider.prototype
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* @type {TileDiscardPolicy}
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* @readonly
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*/
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tileDiscardPolicy : {
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get : function() {
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return this._imageryProvider.tileDiscardPolicy;
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}
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},
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/**
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* Gets an event that is raised when the imagery provider encounters an asynchronous error.. By subscribing
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* to the event, you will be notified of the error and can potentially recover from it. Event listeners
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* are passed an instance of {@link TileProviderError}.
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* @memberof MapboxImageryProvider.prototype
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* @type {Event}
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* @readonly
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*/
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errorEvent : {
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get : function() {
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return this._imageryProvider.errorEvent;
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}
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},
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/**
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* Gets the credit to display when this imagery provider is active. Typically this is used to credit
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* the source of the imagery. This function should
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* not be called before {@link MapboxImageryProvider#ready} returns true.
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* @memberof MapboxImageryProvider.prototype
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* @type {Credit}
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* @readonly
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*/
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credit : {
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get : function() {
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return this._imageryProvider.credit;
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}
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},
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/**
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* Gets the proxy used by this provider.
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* @memberof MapboxImageryProvider.prototype
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* @type {Proxy}
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* @readonly
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*/
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proxy : {
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get : function() {
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return this._imageryProvider.proxy;
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}
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},
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/**
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* Gets a value indicating whether or not the images provided by this imagery provider
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* include an alpha channel. If this property is false, an alpha channel, if present, will
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* be ignored. If this property is true, any images without an alpha channel will be treated
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* as if their alpha is 1.0 everywhere. When this property is false, memory usage
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* and texture upload time are reduced.
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* @memberof MapboxImageryProvider.prototype
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* @type {Boolean}
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* @readonly
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*/
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hasAlphaChannel : {
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get : function() {
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return this._imageryProvider.hasAlphaChannel;
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}
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}
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});
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/**
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* Gets the credits to be displayed when a given tile is displayed.
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*
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* @param {Number} x The tile X coordinate.
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* @param {Number} y The tile Y coordinate.
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* @param {Number} level The tile level;
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* @returns {Credit[]} The credits to be displayed when the tile is displayed.
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*
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* @exception {DeveloperError} <code>getTileCredits</code> must not be called before the imagery provider is ready.
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*/
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MapboxImageryProvider.prototype.getTileCredits = function(x, y, level) {
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if (defined(this._accessTokenErrorCredit)) {
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return [this._accessTokenErrorCredit];
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}
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};
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/**
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* Requests the image for a given tile. This function should
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* not be called before {@link MapboxImageryProvider#ready} returns true.
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*
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* @param {Number} x The tile X coordinate.
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* @param {Number} y The tile Y coordinate.
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* @param {Number} level The tile level.
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* @param {Request} [request] The request object. Intended for internal use only.
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* @returns {Promise.<Image|Canvas>|undefined} A promise for the image that will resolve when the image is available, or
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* undefined if there are too many active requests to the server, and the request
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* should be retried later. The resolved image may be either an
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* Image or a Canvas DOM object.
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*
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* @exception {DeveloperError} <code>requestImage</code> must not be called before the imagery provider is ready.
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*/
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MapboxImageryProvider.prototype.requestImage = function(x, y, level, request) {
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return this._imageryProvider.requestImage(x, y, level, request);
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};
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/**
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* Asynchronously determines what features, if any, are located at a given longitude and latitude within
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* a tile. This function should not be called before {@link MapboxImageryProvider#ready} returns true.
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* This function is optional, so it may not exist on all ImageryProviders.
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*
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*
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* @param {Number} x The tile X coordinate.
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* @param {Number} y The tile Y coordinate.
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* @param {Number} level The tile level.
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* @param {Number} longitude The longitude at which to pick features.
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* @param {Number} latitude The latitude at which to pick features.
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* @return {Promise.<ImageryLayerFeatureInfo[]>|undefined} A promise for the picked features that will resolve when the asynchronous
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* picking completes. The resolved value is an array of {@link ImageryLayerFeatureInfo}
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* instances. The array may be empty if no features are found at the given location.
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* It may also be undefined if picking is not supported.
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*
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* @exception {DeveloperError} <code>pickFeatures</code> must not be called before the imagery provider is ready.
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*/
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MapboxImageryProvider.prototype.pickFeatures = function(x, y, level, longitude, latitude) {
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return this._imageryProvider.pickFeatures(x, y, level, longitude, latitude);
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};
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// Exposed for tests
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MapboxImageryProvider._defaultCredit = defaultCredit;
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export default MapboxImageryProvider;
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