react-virtualized
Version:
React components for efficiently rendering large, scrollable lists and tabular data
88 lines (87 loc) • 4.49 kB
JavaScript
var _interopRequireDefault = require("@babel/runtime/helpers/interopRequireDefault");
var _typeof = require("@babel/runtime/helpers/typeof");
Object.defineProperty(exports, "__esModule", {
value: true
});
exports["default"] = void 0;
var _classCallCheck2 = _interopRequireDefault(require("@babel/runtime/helpers/classCallCheck"));
var _createClass2 = _interopRequireDefault(require("@babel/runtime/helpers/createClass"));
var _possibleConstructorReturn2 = _interopRequireDefault(require("@babel/runtime/helpers/possibleConstructorReturn"));
var _getPrototypeOf2 = _interopRequireDefault(require("@babel/runtime/helpers/getPrototypeOf"));
var _inherits2 = _interopRequireDefault(require("@babel/runtime/helpers/inherits"));
var _propTypes = _interopRequireDefault(require("prop-types"));
var React = _interopRequireWildcard(require("react"));
function _getRequireWildcardCache(e) { if ("function" != typeof WeakMap) return null; var r = new WeakMap(), t = new WeakMap(); return (_getRequireWildcardCache = function _getRequireWildcardCache(e) { return e ? t : r; })(e); }
function _interopRequireWildcard(e, r) { if (!r && e && e.__esModule) return e; if (null === e || "object" != _typeof(e) && "function" != typeof e) return { "default": e }; var t = _getRequireWildcardCache(r); if (t && t.has(e)) return t.get(e); var n = { __proto__: null }, a = Object.defineProperty && Object.getOwnPropertyDescriptor; for (var u in e) if ("default" !== u && {}.hasOwnProperty.call(e, u)) { var i = a ? Object.getOwnPropertyDescriptor(e, u) : null; i && (i.get || i.set) ? Object.defineProperty(n, u, i) : n[u] = e[u]; } return n["default"] = e, t && t.set(e, n), n; }
function _callSuper(t, o, e) { return o = (0, _getPrototypeOf2["default"])(o), (0, _possibleConstructorReturn2["default"])(t, _isNativeReflectConstruct() ? Reflect.construct(o, e || [], (0, _getPrototypeOf2["default"])(t).constructor) : o.apply(t, e)); }
function _isNativeReflectConstruct() { try { var t = !Boolean.prototype.valueOf.call(Reflect.construct(Boolean, [], function () {})); } catch (t) {} return (_isNativeReflectConstruct = function _isNativeReflectConstruct() { return !!t; })(); }
/**
* HOC that simplifies the process of synchronizing scrolling between two or more virtualized components.
*/
var ScrollSync = exports["default"] = /*#__PURE__*/function (_React$PureComponent) {
function ScrollSync(props, context) {
var _this;
(0, _classCallCheck2["default"])(this, ScrollSync);
_this = _callSuper(this, ScrollSync, [props, context]);
_this.state = {
clientHeight: 0,
clientWidth: 0,
scrollHeight: 0,
scrollLeft: 0,
scrollTop: 0,
scrollWidth: 0
};
_this._onScroll = _this._onScroll.bind(_this);
return _this;
}
(0, _inherits2["default"])(ScrollSync, _React$PureComponent);
return (0, _createClass2["default"])(ScrollSync, [{
key: "render",
value: function render() {
var children = this.props.children;
var _this$state = this.state,
clientHeight = _this$state.clientHeight,
clientWidth = _this$state.clientWidth,
scrollHeight = _this$state.scrollHeight,
scrollLeft = _this$state.scrollLeft,
scrollTop = _this$state.scrollTop,
scrollWidth = _this$state.scrollWidth;
return children({
clientHeight: clientHeight,
clientWidth: clientWidth,
onScroll: this._onScroll,
scrollHeight: scrollHeight,
scrollLeft: scrollLeft,
scrollTop: scrollTop,
scrollWidth: scrollWidth
});
}
}, {
key: "_onScroll",
value: function _onScroll(_ref) {
var clientHeight = _ref.clientHeight,
clientWidth = _ref.clientWidth,
scrollHeight = _ref.scrollHeight,
scrollLeft = _ref.scrollLeft,
scrollTop = _ref.scrollTop,
scrollWidth = _ref.scrollWidth;
this.setState({
clientHeight: clientHeight,
clientWidth: clientWidth,
scrollHeight: scrollHeight,
scrollLeft: scrollLeft,
scrollTop: scrollTop,
scrollWidth: scrollWidth
});
}
}]);
}(React.PureComponent);
ScrollSync.propTypes = process.env.NODE_ENV !== "production" ? {
/**
* Function responsible for rendering 2 or more virtualized components.
* This function should implement the following signature:
* ({ onScroll, scrollLeft, scrollTop }) => PropTypes.element
*/
children: _propTypes["default"].func.isRequired
} : {};
;