@kiwicom/orbit-components/es/Sticky/index.js

Orbit-components is a React component library which provides developers with the easiest possible way of building Kiwi.com’s products.

import _classCallCheck from "@babel/runtime/helpers/esm/classCallCheck";
import _createClass from "@babel/runtime/helpers/esm/createClass";
import _assertThisInitialized from "@babel/runtime/helpers/esm/assertThisInitialized";
import _inherits from "@babel/runtime/helpers/esm/inherits";
import _possibleConstructorReturn from "@babel/runtime/helpers/esm/possibleConstructorReturn";
import _getPrototypeOf from "@babel/runtime/helpers/esm/getPrototypeOf";
import _defineProperty from "@babel/runtime/helpers/esm/defineProperty";

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

import * as React from "react";
import styled, { css } from "styled-components";
import { addScrollHandler, removeScrollHandler, getScrollingElement } from "../utils/scroll";
import defaultTheme from "../defaultTheme";
var StyledSticky = styled.div.withConfig({
  displayName: "Sticky__StyledSticky",
  componentId: "sc-15w40gm-0"
})([""]);
var StyledStickyContent = styled.div.withConfig({
  displayName: "Sticky__StyledStickyContent",
  componentId: "sc-15w40gm-1"
})(["position:", ";", ";box-shadow:0 2px 20px 6px rgba(23,27,30,0.15);border-radius:", ";"], function (_ref) {
  var sticky = _ref.sticky;
  return sticky ? "fixed" : "relative";
}, function (_ref2) {
  var size = _ref2.size,
      initialWidth = _ref2.initialWidth;
  return css(["top:", ";width:", ";"], size.height && "".concat(size.height, "px"), size.width && !initialWidth && "".concat(size.width, "px") || "100%");
}, function (_ref3) {
  var theme = _ref3.theme;
  return theme.orbit.borderRadiusNormal;
}); // $FlowFixMe: https://github.com/flow-typed/flow-typed/issues/3653#issuecomment-568539198

StyledStickyContent.defaultProps = {
  theme: defaultTheme
};

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

  var _super = _createSuper(Sticky);

  function Sticky() {
    var _this;

    _classCallCheck(this, Sticky);

    for (var _len = arguments.length, args = new Array(_len), _key = 0; _key < _len; _key++) {
      args[_key] = arguments[_key];
    }

    _this = _super.call.apply(_super, [this].concat(args));

    _defineProperty(_assertThisInitialized(_this), "state", {
      sticky: false,
      height: 0,
      initialWidth: true,
      initialTop: 0,
      width: 0
    });

    _defineProperty(_assertThisInitialized(_this), "content", /*#__PURE__*/React.createRef());

    _defineProperty(_assertThisInitialized(_this), "sticky", /*#__PURE__*/React.createRef());

    _defineProperty(_assertThisInitialized(_this), "handleTop", function () {
      if (_this.sticky.current) {
        var values = _this.sticky.current.getBoundingClientRect();

        _this.setState({
          initialTop: values.top
        });
      }
    });

    _defineProperty(_assertThisInitialized(_this), "stickyState", function (sticky, height, width) {
      _this.setState({
        sticky: sticky,
        height: height,
        width: width
      });
    });

    _defineProperty(_assertThisInitialized(_this), "handleScroll", function () {
      var element = _this.content.current;
      var sticky = _this.sticky.current;
      var elementHeight = element.offsetHeight; // $FlowFixMe

      var parent = sticky.parentNode.getBoundingClientRect();
      var scrollingElement = getScrollingElement().getBoundingClientRect();
      var _this$props$offset = _this.props.offset,
          offset = _this$props$offset === void 0 ? 0 : _this$props$offset;
      var initialTop = _this.state.initialTop;

      _this.setState({
        initialWidth: false
      }); // if (sets fixed position if window with offset reaches elements and current position is not on the bottom of parent element)


      if (Math.abs(scrollingElement.top) + offset >= initialTop && parent.bottom - elementHeight - offset >= 0) {
        _this.stickyState(true, offset, parent.width); // turns off fixed if it's on the bottom of parent's element

      } else if (parent.bottom - elementHeight - offset <= 0) {
        _this.stickyState(false, parent.height - elementHeight, parent.width);
      } else {
        // just off fixed
        _this.stickyState(false, 0, parent.width);
      }
    });

    return _this;
  }

  _createClass(Sticky, [{
    key: "componentDidMount",
    value: function componentDidMount() {
      this.handleTop();
      addScrollHandler(this.handleScroll);
      window.addEventListener("resize", this.handleTop);
      window.addEventListener("resize", this.handleScroll);
    }
  }, {
    key: "componentWillUnmount",
    value: function componentWillUnmount() {
      window.removeEventListener("resize", this.handleTop);
      window.removeEventListener("resize", this.handleScroll);
      removeScrollHandler(this.handleScroll);
    }
  }, {
    key: "render",
    value: function render() {
      var _this$props = this.props,
          children = _this$props.children,
          dataTest = _this$props.dataTest;
      var _this$state = this.state,
          sticky = _this$state.sticky,
          height = _this$state.height,
          width = _this$state.width,
          initialWidth = _this$state.initialWidth;
      return /*#__PURE__*/React.createElement(StyledSticky, {
        ref: this.sticky,
        "data-test": dataTest
      }, /*#__PURE__*/React.createElement(StyledStickyContent, {
        sticky: sticky,
        size: {
          height: height,
          width: width
        },
        initialWidth: initialWidth,
        ref: this.content
      }, children));
    }
  }]);

  return Sticky;
}(React.Component);

export default Sticky;