kepler.gl
Version:
kepler.gl is a webgl based application to visualize large scale location data in the browser
110 lines (105 loc) • 11.7 kB
JavaScript
;
var _interopRequireDefault = require("@babel/runtime/helpers/interopRequireDefault");
Object.defineProperty(exports, "__esModule", {
value: true
});
exports.DataRow = void 0;
var _classCallCheck2 = _interopRequireDefault(require("@babel/runtime/helpers/classCallCheck"));
var _createClass2 = _interopRequireDefault(require("@babel/runtime/helpers/createClass"));
var _defineProperty2 = _interopRequireDefault(require("@babel/runtime/helpers/defineProperty"));
// SPDX-License-Identifier: MIT
// Copyright contributors to the kepler.gl project
/**
* Setting for shared row optimization.
* - False/undefined indicates that unique row objects should be used (default).
* - True indicates that a single temporary row object should be created and used without extra allocations.
* - A DataRow object indicates that the row should be used as a temporary shared row.
* When used, the content of the shared row isn't preserved between calls.
*/
/**
* Return type for createSharedRow:
* - DataRow object that should be used as shared row.
* - Falsy values indicate that shared row object shouldn't be used.
*/
var DataRow = exports.DataRow = /*#__PURE__*/function () {
/**
* Creates new DataRow.
* @param dataContainer Data container where data is stored. Can be initialized with null for shared rows.
* @param rowIndex Index of a row in the data container.
*/
function DataRow(dataContainer, rowIndex) {
(0, _classCallCheck2["default"])(this, DataRow);
(0, _defineProperty2["default"])(this, "_dataContainer", void 0);
(0, _defineProperty2["default"])(this, "_rowIndex", void 0);
this._dataContainer = dataContainer;
this._rowIndex = rowIndex;
}
/**
* Conditionally creates a DataRow object.
* @param sharedRowDesc Accepts forllowing options:
* - true indicates that new DataRow should be created.
* - falsy value or a DataRow object is passed through without any change.
* @returns A new DataRow object or unchanged input argument.
*/
return (0, _createClass2["default"])(DataRow, [{
key: "valueAt",
value:
/**
* Returns the value stored at the specified index in the row.
* @param columnIndex Index of the requested field in the row.
* @returns Value at the index.
*/
function valueAt(columnIndex) {
var _this$_dataContainer;
return (_this$_dataContainer = this._dataContainer) === null || _this$_dataContainer === void 0 ? void 0 : _this$_dataContainer.valueAt(this._rowIndex, columnIndex);
}
/**
* Returns the row represented as an array.
* @returns The row represented as an array.
*/
}, {
key: "values",
value: function values() {
return this._dataContainer ? this._dataContainer.rowAsArray(this._rowIndex) : [];
}
/**
* Setup a row object. The method is used by shared rows to prevent excessive allocations.
* @param dataContainer Data container.
* @param rowIndex Index of a row in the data container.
*/
}, {
key: "setSource",
value: function setSource(dataContainer, rowIndex) {
this._dataContainer = dataContainer;
this._rowIndex = rowIndex;
}
/**
* Creates a new array populated with the results of calling the provided function
* on every element of the row.
* @param handler The callback is called with the following arguments:
* - elem: The current element being processed in the row.
* - index: The index of the current element being processed in the row.
* @returns A new array with each element being the result of the func callback.
*/
}, {
key: "map",
value: function map(handler) {
var _this$_dataContainer2;
var numColumns = ((_this$_dataContainer2 = this._dataContainer) === null || _this$_dataContainer2 === void 0 ? void 0 : _this$_dataContainer2.numColumns()) || 0;
var out = [];
for (var column = 0; column < numColumns; ++column) {
out[column] = handler(this.valueAt(column), column);
}
return out;
}
}], [{
key: "createSharedRow",
value: function createSharedRow(sharedRowDesc) {
if (sharedRowDesc === true) {
return new DataRow(null, 0);
}
return sharedRowDesc;
}
}]);
}();
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