@enact/sandstone/useScroll/ScrollbarPlaceholder.js

Large-screen/TV support library for Enact, containing a variety of UI components.

"use strict";

Object.defineProperty(exports, "__esModule", {
  value: true
});
exports["default"] = exports.ScrollbarPlaceholder = void 0;
var _spotlight = _interopRequireDefault(require("@enact/spotlight"));
var _Spottable = _interopRequireDefault(require("@enact/spotlight/Spottable"));
var _react = require("react");
var _jsxRuntime = require("react/jsx-runtime");
function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { "default": obj }; }
function _slicedToArray(arr, i) { return _arrayWithHoles(arr) || _iterableToArrayLimit(arr, i) || _unsupportedIterableToArray(arr, i) || _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(o, minLen) { if (!o) return; if (typeof o === "string") return _arrayLikeToArray(o, minLen); var n = Object.prototype.toString.call(o).slice(8, -1); if (n === "Object" && o.constructor) n = o.constructor.name; if (n === "Map" || n === "Set") return Array.from(o); if (n === "Arguments" || /^(?:Ui|I)nt(?:8|16|32)(?:Clamped)?Array$/.test(n)) return _arrayLikeToArray(o, minLen); }
function _arrayLikeToArray(arr, len) { if (len == null || len > arr.length) len = arr.length; for (var i = 0, arr2 = new Array(len); i < len; i++) arr2[i] = arr[i]; return arr2; }
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(arr) { if (Array.isArray(arr)) return arr; }
var SpotlightPlaceholder = (0, _Spottable["default"])('div');

/**
 * ScrollbarPlaceholder component.
 *
 * @class ScrollbarPlaceholder
 * @memberof sandstone/useScroll
 * @ui
 * @private
 */
var ScrollbarPlaceholder = exports.ScrollbarPlaceholder = function ScrollbarPlaceholder() {
  var _useState = (0, _react.useState)(true),
    _useState2 = _slicedToArray(_useState, 2),
    showPlaceholder = _useState2[0],
    setShowPlaceholder = _useState2[1];
  (0, _react.useEffect)(function () {
    if (showPlaceholder) {
      setShowPlaceholder(false);
    }
  }, [showPlaceholder]);
  var resetFocus = (0, _react.useCallback)(function () {
    setTimeout(function () {
      if (!_spotlight["default"].getPointerMode() && !_spotlight["default"].getCurrent()) {
        if (!_spotlight["default"].isPaused()) {
          _spotlight["default"].focus(_spotlight["default"].getActiveContainer(), {
            toOuterContainer: true
          });
        } else {
          setTimeout(function () {
            if (!_spotlight["default"].getPointerMode() && !_spotlight["default"].getCurrent() && !_spotlight["default"].isPaused()) {
              _spotlight["default"].focus(_spotlight["default"].getActiveContainer(), {
                toOuterContainer: true
              });
            }
          }, 400); // Wait again for finishing animation (ex. panel transition).
        }
      }
    }, 0); // Wait for unmounting placeholder node.
  }, []);
  return showPlaceholder ? /*#__PURE__*/(0, _jsxRuntime.jsx)(SpotlightPlaceholder, {
    "aria-hidden": true,
    onSpotlightDisappear: resetFocus,
    "data-spotlight-ignore-restore": true
  }) : null;
};
ScrollbarPlaceholder.displayName = 'ScrollbarPlaceholder';
var _default = exports["default"] = ScrollbarPlaceholder;