@edpi/react-scroll-position/dist/index.js

Remember and restore React scroll position for the nodes.

"use strict";

Object.defineProperty(exports, "__esModule", {
  value: true
});
exports["default"] = exports.memoryStore = void 0;

var _react = _interopRequireDefault(require("react"));

function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { "default": obj }; }

function _typeof(obj) { "@babel/helpers - typeof"; if (typeof Symbol === "function" && typeof Symbol.iterator === "symbol") { _typeof = function _typeof(obj) { return typeof obj; }; } else { _typeof = function _typeof(obj) { return obj && typeof Symbol === "function" && obj.constructor === Symbol && obj !== Symbol.prototype ? "symbol" : typeof obj; }; } return _typeof(obj); }

function ownKeys(object, enumerableOnly) { var keys = Object.keys(object); if (Object.getOwnPropertySymbols) { var symbols = Object.getOwnPropertySymbols(object); if (enumerableOnly) symbols = symbols.filter(function (sym) { return Object.getOwnPropertyDescriptor(object, sym).enumerable; }); keys.push.apply(keys, symbols); } return keys; }

function _objectSpread(target) { for (var i = 1; i < arguments.length; i++) { var source = arguments[i] != null ? arguments[i] : {}; if (i % 2) { ownKeys(Object(source), true).forEach(function (key) { _defineProperty(target, key, source[key]); }); } else if (Object.getOwnPropertyDescriptors) { Object.defineProperties(target, Object.getOwnPropertyDescriptors(source)); } else { ownKeys(Object(source)).forEach(function (key) { Object.defineProperty(target, key, Object.getOwnPropertyDescriptor(source, key)); }); } } return target; }

function _defineProperty(obj, key, value) { if (key in obj) { Object.defineProperty(obj, key, { value: value, enumerable: true, configurable: true, writable: true }); } else { obj[key] = value; } return obj; }

function _objectWithoutProperties(source, excluded) { if (source == null) return {}; var target = _objectWithoutPropertiesLoose(source, excluded); var key, i; if (Object.getOwnPropertySymbols) { var sourceSymbolKeys = Object.getOwnPropertySymbols(source); for (i = 0; i < sourceSymbolKeys.length; i++) { key = sourceSymbolKeys[i]; if (excluded.indexOf(key) >= 0) continue; if (!Object.prototype.propertyIsEnumerable.call(source, key)) continue; target[key] = source[key]; } } return target; }

function _objectWithoutPropertiesLoose(source, excluded) { if (source == null) return {}; var target = {}; var sourceKeys = Object.keys(source); var key, i; for (i = 0; i < sourceKeys.length; i++) { key = sourceKeys[i]; if (excluded.indexOf(key) >= 0) continue; target[key] = source[key]; } return target; }

function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError("Cannot call a class as a function"); } }

function _defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if ("value" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } }

function _createClass(Constructor, protoProps, staticProps) { if (protoProps) _defineProperties(Constructor.prototype, protoProps); if (staticProps) _defineProperties(Constructor, staticProps); return Constructor; }

function _inherits(subClass, superClass) { if (typeof superClass !== "function" && superClass !== null) { throw new TypeError("Super expression must either be null or a function"); } subClass.prototype = Object.create(superClass && superClass.prototype, { constructor: { value: subClass, writable: true, configurable: true } }); if (superClass) _setPrototypeOf(subClass, superClass); }

function _setPrototypeOf(o, p) { _setPrototypeOf = Object.setPrototypeOf || function _setPrototypeOf(o, p) { o.__proto__ = p; return o; }; return _setPrototypeOf(o, p); }

function _createSuper(Derived) { var hasNativeReflectConstruct = _isNativeReflectConstruct(); return function _createSuperInternal() { var Super = _getPrototypeOf(Derived), result; if (hasNativeReflectConstruct) { var NewTarget = _getPrototypeOf(this).constructor; result = Reflect.construct(Super, arguments, NewTarget); } else { result = Super.apply(this, arguments); } return _possibleConstructorReturn(this, result); }; }

function _possibleConstructorReturn(self, call) { if (call && (_typeof(call) === "object" || typeof call === "function")) { return call; } return _assertThisInitialized(self); }

function _assertThisInitialized(self) { if (self === void 0) { throw new ReferenceError("this hasn't been initialised - super() hasn't been called"); } return self; }

function _isNativeReflectConstruct() { if (typeof Reflect === "undefined" || !Reflect.construct) return false; if (Reflect.construct.sham) return false; if (typeof Proxy === "function") return true; try { Date.prototype.toString.call(Reflect.construct(Date, [], function () {})); return true; } catch (e) { return false; } }

function _getPrototypeOf(o) { _getPrototypeOf = Object.setPrototypeOf ? Object.getPrototypeOf : function _getPrototypeOf(o) { return o.__proto__ || Object.getPrototypeOf(o); }; return _getPrototypeOf(o); }

function getScrollPosition(target) {
  if (target instanceof window.Window) {
    return {
      x: target.scrollX,
      y: target.scrollY
    };
  }

  return {
    x: target.scrollLeft,
    y: target.scrollTop
  };
}

function scroll(target, x, y) {
  if (target instanceof window.Window) {
    target.scrollTo(x, y);
  } else {
    target.scrollLeft = x;
    target.scrollTop = y;
  }
}

var memoryStore = {
  data: new Map(),
  get: function get(key) {
    if (!key) {
      return null;
    }

    return this.data.get(key) || null;
  },
  set: function set(key, data) {
    if (!key) {
      return;
    }

    return this.data.set(key, data);
  }
};
exports.memoryStore = memoryStore;

var ScrollPosition = /*#__PURE__*/function (_React$Component) {
  _inherits(ScrollPosition, _React$Component);

  var _super = _createSuper(ScrollPosition);

  function ScrollPosition() {
    var _this;

    _classCallCheck(this, ScrollPosition);

    _this = _super.apply(this, arguments);
    _this.attachScrollNode = _this.attachScrollNode.bind(_assertThisInitialized(_this));
    _this.getScroll = _this.getScroll.bind(_assertThisInitialized(_this));
    _this.getScrollNode = _this.getScrollNode.bind(_assertThisInitialized(_this));
    _this.setScroll = _this.setScroll.bind(_assertThisInitialized(_this));
    _this._target = window;
    return _this;
  }

  _createClass(ScrollPosition, [{
    key: "attachScrollNode",
    value: function attachScrollNode(node) {
      this._target = node;
    }
  }, {
    key: "getScroll",
    value: function getScroll() {
      if (this._target) {
        return getScrollPosition(this._target);
      }
    }
  }, {
    key: "getScrollNode",
    value: function getScrollNode() {
      if (this._target) {
        return this._target;
      }
    }
  }, {
    key: "setScroll",
    value: function setScroll(pos) {
      pos = pos || this.props.store.get(this.props.scrollKey);

      if (this._target && pos) {
        scroll(this._target, pos.x, pos.y);
      }
    }
  }, {
    key: "saveScroll",
    value: function saveScroll(key) {
      if (this._target) {
        var pos = getScrollPosition(this._target);
        key = key || this.props.scrollKey;
        this.props.store.set(key, pos);
      }
    }
  }, {
    key: "componentDidMount",
    value: function componentDidMount() {
      this.setScroll();
    }
  }, {
    key: "UNSAFE_componentWillReceiveProps",
    value: function UNSAFE_componentWillReceiveProps(nextProps) {
      if (this.props.scrollKey !== nextProps.scrollKey) {
        this.saveScroll();
      }
    }
  }, {
    key: "componentDidUpdate",
    value: function componentDidUpdate(prevProps) {
      if (this.props.scrollKey !== prevProps.scrollKey) {
        this.setScroll();
      }
    }
  }, {
    key: "componentWillUnmount",
    value: function componentWillUnmount() {
      this.saveScroll();
      delete this._target;
    }
  }, {
    key: "render",
    value: function render() {
      var _this$props = this.props,
          _this$props$children = _this$props.children,
          children = _this$props$children === void 0 ? null : _this$props$children,
          props = _objectWithoutProperties(_this$props, ["children"]);

      return children && children(_objectSpread(_objectSpread({}, props), {}, {
        attachScrollNode: this.attachScrollNode,
        getScroll: this.getScroll,
        getScrollNode: this.getScrollNode,
        setScroll: this.setScroll
      }));
    }
  }]);

  return ScrollPosition;
}(_react["default"].Component);

exports["default"] = ScrollPosition;
ScrollPosition.defaultProps = {
  store: memoryStore
};