@prefect9/ui/components/_Scroll.js

UI React components

"use strict";

Object.defineProperty(exports, "__esModule", {
  value: true
});
exports.default = void 0;
require("core-js/modules/web.dom-collections.iterator.js");
var _react = require("react");
var _isType = require("@prefect9/is-type");
var _jsxRuntime = require("react/jsx-runtime");
function ownKeys(e, r) { var t = Object.keys(e); if (Object.getOwnPropertySymbols) { var o = Object.getOwnPropertySymbols(e); r && (o = o.filter(function (r) { return Object.getOwnPropertyDescriptor(e, r).enumerable; })), t.push.apply(t, o); } return t; }
function _objectSpread(e) { for (var r = 1; r < arguments.length; r++) { var t = null != arguments[r] ? arguments[r] : {}; r % 2 ? ownKeys(Object(t), !0).forEach(function (r) { _defineProperty(e, r, t[r]); }) : Object.getOwnPropertyDescriptors ? Object.defineProperties(e, Object.getOwnPropertyDescriptors(t)) : ownKeys(Object(t)).forEach(function (r) { Object.defineProperty(e, r, Object.getOwnPropertyDescriptor(t, r)); }); } return e; }
function _defineProperty(obj, key, value) { key = _toPropertyKey(key); if (key in obj) { Object.defineProperty(obj, key, { value: value, enumerable: true, configurable: true, writable: true }); } else { obj[key] = value; } return obj; }
function _toPropertyKey(t) { var i = _toPrimitive(t, "string"); return "symbol" == typeof i ? i : i + ""; }
function _toPrimitive(t, r) { if ("object" != typeof t || !t) return t; var e = t[Symbol.toPrimitive]; if (void 0 !== e) { var i = e.call(t, r || "default"); if ("object" != typeof i) return i; throw new TypeError("@@toPrimitive must return a primitive value."); } return ("string" === r ? String : Number)(t); }
const Scroll = /*#__PURE__*/(0, _react.forwardRef)(function (_ref2, ref) {
  let {
    children,
    className,
    actions
  } = _ref2;
  const _ref = (0, _react.useRef)(null);
  const scrollRef = ref !== null && ref !== void 0 ? ref : _ref;
  const scrollContainerRef = (0, _react.useRef)(null);
  const verticalBarRef = (0, _react.useRef)(null);
  const verticalBarSlickRef = (0, _react.useRef)(null);

  // Render children
  const [elements, setElements] = (0, _react.useState)([]);
  (0, _react.useEffect)(() => {
    const newElements = [];
    const processingChild = child => {
      const index = newElements.length;
      const element = {};
      if (child.props.ref) {
        element.ref = child.props.ref;
        element.content = /*#__PURE__*/(0, _react.cloneElement)(child, _objectSpread(_objectSpread({}, child.props), {}, {
          key: index
        }));
      } else {
        element.content = /*#__PURE__*/(0, _react.cloneElement)(child, _objectSpread(_objectSpread({}, child.props), {}, {
          key: index,
          ref: _ref3 => element.ref = _ref3
        }));
      }
      newElements.push(element);
    };
    if ((0, _isType.isArr)(children)) for (let child of children) processingChild(child);else if ((0, _isType.isObj)(children)) processingChild(children);
    setElements(newElements);
  }, [children]);

  // Init resize
  const [showVerticalScroll, setShowVerticalScroll] = (0, _react.useState)(false);
  (0, _react.useEffect)(() => {
    let containerHeight;
    let contentHeight;
    let verticalBarHeight;
    let verticalBarSlickHeight;
    const scroll = () => {
      if (!scrollContainerRef || !scrollContainerRef.current) return;
      if (!verticalBarSlickRef || !verticalBarSlickRef.current) return;
      const scrollTop = scrollContainerRef.current.scrollTop;
      const barTop = verticalBarHeight * scrollTop / contentHeight;
      verticalBarSlickRef.current.style.top = "".concat(barTop, "px");
    };
    const resize = () => {
      if (!scrollRef || !scrollRef.current) return;
      if (!scrollContainerRef || !scrollContainerRef.current) return;
      if (!verticalBarRef || !verticalBarRef.current) return;
      if (!verticalBarSlickRef || !verticalBarSlickRef.current) return;

      // reset styles
      scrollContainerRef.current.style.maxHeight = 'auto';
      verticalBarRef.current.style.display = 'none';
      containerHeight = scrollRef.current.getBoundingClientRect().height;
      contentHeight = 0;
      for (let element of elements) {
        if (!element.ref) continue;
        contentHeight += element.ref.getBoundingClientRect().height;
      }
      if (contentHeight > containerHeight) {
        scrollContainerRef.current.style.maxHeight = "".concat(containerHeight, "px");
        setShowVerticalScroll(true);
        verticalBarRef.current.style.display = 'block';
        verticalBarHeight = verticalBarRef.current.getBoundingClientRect().height;
        verticalBarSlickHeight = verticalBarHeight * containerHeight / contentHeight;
        verticalBarSlickRef.current.style.height = "".concat(verticalBarSlickHeight, "px");
      } else setShowVerticalScroll(false);
      scroll();
    };
    if (actions && (0, _isType.isObj)(actions.current)) {
      actions.current.resize = resize;
      actions.current.scrollTop = scrollTop => {
        if (!scrollContainerRef || !scrollContainerRef.current) return;
        scrollContainerRef.current.scrollTop = scrollTop;
        scroll();
      };
    }
    resize();
    window.addEventListener('resize', resize, {
      passive: true
    });
    let initedScrollEvent = false;
    if (scrollContainerRef.current) {
      initedScrollEvent = true;
      scrollContainerRef.current.addEventListener('scroll', scroll, {
        passive: true
      });
    }
    return () => {
      window.removeEventListener('resize', resize, {
        passive: true
      });
      if (!initedScrollEvent) scrollContainerRef.current.removeEventListener('scroll', scroll, {
        passive: true
      });
    };
  }, [elements, actions, scrollRef, scrollContainerRef, verticalBarRef, verticalBarSlickRef]);
  return /*#__PURE__*/(0, _jsxRuntime.jsxs)("div", {
    ref: scrollRef,
    className: "prefect9-scroll ".concat(className, " ").concat(showVerticalScroll ? 'prefect9-scroll__show-vertical' : ''),
    children: [/*#__PURE__*/(0, _jsxRuntime.jsx)("div", {
      ref: scrollContainerRef,
      className: "prefect9-scroll__container",
      children: elements.map(element => element.content)
    }), /*#__PURE__*/(0, _jsxRuntime.jsx)("div", {
      ref: verticalBarRef,
      className: "prefect9-scroll__vertical-bar",
      children: /*#__PURE__*/(0, _jsxRuntime.jsx)("div", {
        ref: verticalBarSlickRef
      })
    })]
  });
});
var _default = exports.default = Scroll;