Add existing to tracked

node_modules/@cesium/engine/Source/Scene/I3SStatistics.js

@@ -0,0 +1,94 @@
+import defined from "../Core/defined.js";
+import I3SDataProvider from "./I3SDataProvider.js";
+import Resource from "../Core/Resource.js";
+
+/**
+ * This class implements an I3S statistics for Building Scene Layer.
+ * <p>
+ * Do not construct this directly, instead access statistics through {@link I3SDataProvider}.
+ * </p>
+ * @alias I3SStatistics
+ * @internalConstructor
+ */
+function I3SStatistics(dataProvider, uri) {
+  this._dataProvider = dataProvider;
+
+  this._resource = new Resource({ url: uri });
+  this._resource.setQueryParameters(dataProvider.resource.queryParameters);
+  this._resource.appendForwardSlash();
+}
+
+Object.defineProperties(I3SStatistics.prototype, {
+  /**
+   * Gets the resource for the statistics
+   * @memberof I3SStatistics.prototype
+   * @type {Resource}
+   * @readonly
+   */
+  resource: {
+    get: function () {
+      return this._resource;
+    },
+  },
+
+  /**
+   * Gets the I3S data for this object.
+   * @memberof I3SStatistics.prototype
+   * @type {object}
+   * @readonly
+   */
+  data: {
+    get: function () {
+      return this._data;
+    },
+  },
+
+  /**
+   * Gets the collection of attribute names.
+   * @memberof I3SStatistics.prototype
+   * @type {string[]}
+   * @readonly
+   */
+  names: {
+    get: function () {
+      const names = [];
+      const summary = this._data.summary;
+      if (defined(summary)) {
+        for (let i = 0; i < summary.length; ++i) {
+          names.push(summary[i].fieldName);
+        }
+      }
+      return names;
+    },
+  },
+});
+
+/**
+ * Loads the content.
+ * @returns {Promise<object>} A promise that is resolved when the data of the I3S statistics is loaded
+ * @private
+ */
+I3SStatistics.prototype.load = async function () {
+  this._data = await I3SDataProvider.loadJson(this._resource);
+  return this._data;
+};
+
+/**
+ * @private
+ */
+I3SStatistics.prototype._getValues = function (attributeName) {
+  const summary = this._data.summary;
+  if (defined(summary)) {
+    for (let i = 0; i < summary.length; ++i) {
+      const attribute = summary[i];
+      if (attribute.fieldName === attributeName) {
+        if (defined(attribute.mostFrequentValues)) {
+          return [...attribute.mostFrequentValues];
+        }
+        return [];
+      }
+    }
+  }
+};
+
+export default I3SStatistics;