@elastic/eui
Version:
Elastic UI Component Library
141 lines (138 loc) • 6.74 kB
JavaScript
function _slicedToArray(r, e) { return _arrayWithHoles(r) || _iterableToArrayLimit(r, e) || _unsupportedIterableToArray(r, e) || _nonIterableRest(); }
function _nonIterableRest() { throw new TypeError("Invalid attempt to destructure non-iterable instance.\nIn order to be iterable, non-array objects must have a [Symbol.iterator]() method."); }
function _unsupportedIterableToArray(r, a) { if (r) { if ("string" == typeof r) return _arrayLikeToArray(r, a); var t = {}.toString.call(r).slice(8, -1); return "Object" === t && r.constructor && (t = r.constructor.name), "Map" === t || "Set" === t ? Array.from(r) : "Arguments" === t || /^(?:Ui|I)nt(?:8|16|32)(?:Clamped)?Array$/.test(t) ? _arrayLikeToArray(r, a) : void 0; } }
function _arrayLikeToArray(r, a) { (null == a || a > r.length) && (a = r.length); for (var e = 0, n = Array(a); e < a; e++) n[e] = r[e]; return n; }
function _iterableToArrayLimit(r, l) { var t = null == r ? null : "undefined" != typeof Symbol && r[Symbol.iterator] || r["@@iterator"]; if (null != t) { var e, n, i, u, a = [], f = !0, o = !1; try { if (i = (t = t.call(r)).next, 0 === l) { if (Object(t) !== t) return; f = !1; } else for (; !(f = (e = i.call(t)).done) && (a.push(e.value), a.length !== l); f = !0); } catch (r) { o = !0, n = r; } finally { try { if (!f && null != t.return && (u = t.return(), Object(u) !== u)) return; } finally { if (o) throw n; } } return a; } }
function _arrayWithHoles(r) { if (Array.isArray(r)) return r; }
/*
* Copyright Elasticsearch B.V. and/or licensed to Elasticsearch B.V. under one
* or more contributor license agreements. Licensed under the Elastic License
* 2.0 and the Server Side Public License, v 1; you may not use this file except
* in compliance with, at your election, the Elastic License 2.0 or the Server
* Side Public License, v 1.
*/
import React, { useCallback, useEffect, useRef, useState } from 'react';
import { useEuiMemoizedStyles } from '../../../services';
import { euiTableStickyScrollbarStyles } from './sticky_scrollbar.styles';
import { jsx as ___EmotionJSX } from "@emotion/react";
export var EuiTableStickyScrollbar = function EuiTableStickyScrollbar(_ref) {
var tableWrapperRef = _ref.tableWrapperRef;
var styles = useEuiMemoizedStyles(euiTableStickyScrollbarStyles);
var trackElementRef = useRef(null);
var dragStartRef = useRef(null);
var requestAnimationFramePendingRef = useRef(false);
var _useState = useState(false),
_useState2 = _slicedToArray(_useState, 2),
isActive = _useState2[0],
setIsActive = _useState2[1];
var _useState3 = useState(false),
_useState4 = _slicedToArray(_useState3, 2),
isHidden = _useState4[0],
setIsHidden = _useState4[1];
var updateTrack = useCallback(function (element) {
var clientWidth = element.clientWidth,
scrollWidth = element.scrollWidth,
scrollLeft = element.scrollLeft;
if (!requestAnimationFramePendingRef.current) {
requestAnimationFramePendingRef.current = true;
requestAnimationFrame(function () {
var el = trackElementRef.current;
if (el) {
el.style.inlineSize = "".concat(clientWidth / scrollWidth * 100, "%");
el.style.marginInlineStart = "".concat(scrollLeft / scrollWidth * 100, "%");
}
requestAnimationFramePendingRef.current = false;
});
}
}, []);
var handleScroll = useCallback(function (event) {
if (event.target) {
updateTrack(event.target);
}
}, [updateTrack]);
var handleResize = useCallback(function (entries) {
var element = entries[0].target;
if (!element) {
return;
}
updateTrack(element);
setIsActive(element.clientWidth < element.scrollWidth);
}, [updateTrack]);
var handleBottomCornerIntersection = useCallback(function (entries) {
var entry = entries[0];
var element = entry.target;
if (!element) {
return;
}
setIsHidden(!entry.isIntersecting);
}, []);
var handlePointerDown = useCallback(function (event) {
var _el$scrollLeft;
var el = tableWrapperRef.current;
dragStartRef.current = {
x: event.clientX,
scrollLeft: (_el$scrollLeft = el === null || el === void 0 ? void 0 : el.scrollLeft) !== null && _el$scrollLeft !== void 0 ? _el$scrollLeft : 0
};
event.currentTarget.setPointerCapture(event.pointerId);
}, [tableWrapperRef]);
var handlePointerUp = useCallback(function () {
dragStartRef.current = null;
}, [dragStartRef]);
var handlePointerMove = useCallback(function (event) {
var el = tableWrapperRef.current;
if (!dragStartRef.current || !el) {
return;
}
var diff = event.clientX - dragStartRef.current.x;
var ratio = el.scrollWidth / el.clientWidth;
el.scrollLeft = dragStartRef.current.scrollLeft + diff * ratio;
}, [tableWrapperRef]);
useEffect(function () {
var element = tableWrapperRef.current;
if (!element) {
return;
}
updateTrack(element);
element.addEventListener('scroll', handleScroll, {
passive: true
});
// ResizeObserver is available in all supported browsers,
// but jsdom and jest don't provide a polyfill for it.
var resizeObserver;
if (typeof window.ResizeObserver !== 'undefined') {
resizeObserver = new ResizeObserver(handleResize);
resizeObserver.observe(element);
}
// IntersectionOserver is available in all supported browsers,
// but jsdom and jest don't provide a polyfill for it.
var intersectionObserver;
if (typeof window.IntersectionObserver !== 'undefined') {
intersectionObserver = new IntersectionObserver(handleBottomCornerIntersection, {
threshold: 0,
rootMargin: '-100% 0px 0px 0px'
});
intersectionObserver.observe(element);
}
return function () {
var _resizeObserver, _intersectionObserver;
element.removeEventListener('scroll', handleScroll);
(_resizeObserver = resizeObserver) === null || _resizeObserver === void 0 || _resizeObserver.disconnect();
(_intersectionObserver = intersectionObserver) === null || _intersectionObserver === void 0 || _intersectionObserver.disconnect();
};
}, [tableWrapperRef, updateTrack, handleResize, handleScroll, handleBottomCornerIntersection]);
if (!isActive) {
return null;
}
return ___EmotionJSX("div", {
css: [styles.wrapper, isHidden && styles.wrapperHidden, ";label:EuiTableStickyScrollbar;"],
"data-test-subj": "euiTableStickyScrollbar",
"aria-hidden": true
}, ___EmotionJSX("div", {
css: styles.track,
ref: trackElementRef,
onPointerDown: handlePointerDown,
onPointerMove: handlePointerMove,
onPointerUp: handlePointerUp,
"data-test-subj": "euiTableStickyScrollbarTrack"
}));
};