139 lines
3.2 KiB
JavaScript
139 lines
3.2 KiB
JavaScript
/**
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* @module ol/VectorTile
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*/
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import Tile from './Tile.js';
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import TileState from './TileState.js';
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class VectorTile extends Tile {
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/**
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* @param {import("./tilecoord.js").TileCoord} tileCoord Tile coordinate.
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* @param {import("./TileState.js").default} state State.
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* @param {string} src Data source url.
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* @param {import("./format/Feature.js").default} format Feature format.
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* @param {import("./Tile.js").LoadFunction} tileLoadFunction Tile load function.
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* @param {import("./Tile.js").Options} [options] Tile options.
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*/
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constructor(tileCoord, state, src, format, tileLoadFunction, options) {
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super(tileCoord, state, options);
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/**
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* Extent of this tile; set by the source.
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* @type {import("./extent.js").Extent}
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*/
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this.extent = null;
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/**
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* @private
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* @type {import("./format/Feature.js").default}
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*/
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this.format_ = format;
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/**
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* @private
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* @type {Array<import("./Feature.js").default>}
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*/
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this.features_ = null;
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/**
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* @private
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* @type {import("./featureloader.js").FeatureLoader}
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*/
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this.loader_;
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/**
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* Feature projection of this tile; set by the source.
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* @type {import("./proj/Projection.js").default}
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*/
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this.projection = null;
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/**
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* Resolution of this tile; set by the source.
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* @type {number}
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*/
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this.resolution;
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/**
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* @private
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* @type {import("./Tile.js").LoadFunction}
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*/
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this.tileLoadFunction_ = tileLoadFunction;
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/**
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* @private
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* @type {string}
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*/
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this.url_ = src;
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this.key = src;
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}
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/**
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* Get the feature format assigned for reading this tile's features.
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* @return {import("./format/Feature.js").default} Feature format.
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* @api
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*/
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getFormat() {
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return this.format_;
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}
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/**
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* Get the features for this tile. Geometries will be in the view projection.
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* @return {Array<import("./Feature.js").FeatureLike>} Features.
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* @api
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*/
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getFeatures() {
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return this.features_;
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}
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/**
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* Load not yet loaded URI.
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*/
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load() {
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if (this.state == TileState.IDLE) {
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this.setState(TileState.LOADING);
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this.tileLoadFunction_(this, this.url_);
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if (this.loader_) {
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this.loader_(this.extent, this.resolution, this.projection);
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}
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}
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}
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/**
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* Handler for successful tile load.
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* @param {Array<import("./Feature.js").default>} features The loaded features.
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* @param {import("./proj/Projection.js").default} dataProjection Data projection.
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*/
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onLoad(features, dataProjection) {
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this.setFeatures(features);
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}
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/**
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* Handler for tile load errors.
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*/
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onError() {
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this.setState(TileState.ERROR);
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}
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/**
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* Function for use in an {@link module:ol/source/VectorTile~VectorTile}'s `tileLoadFunction`.
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* Sets the features for the tile.
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* @param {Array<import("./Feature.js").default>} features Features.
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* @api
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*/
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setFeatures(features) {
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this.features_ = features;
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this.setState(TileState.LOADED);
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}
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/**
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* Set the feature loader for reading this tile's features.
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* @param {import("./featureloader.js").FeatureLoader} loader Feature loader.
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* @api
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*/
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setLoader(loader) {
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this.loader_ = loader;
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}
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}
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export default VectorTile;
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