planning

node_modules/ol/src/VectorTile.js

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