@clayui/shared
Version:
ClayShared component
159 lines (157 loc) • 7.65 kB
JavaScript
;
Object.defineProperty(exports, "__esModule", {
value: true
});
exports.useFocusVisible = useFocusVisible;
exports.useInteractionFocus = useInteractionFocus;
var _react = require("react");
var _platform = require("./platform");
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 _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; }
function _createForOfIteratorHelper(r, e) { var t = "undefined" != typeof Symbol && r[Symbol.iterator] || r["@@iterator"]; if (!t) { if (Array.isArray(r) || (t = _unsupportedIterableToArray(r)) || e && r && "number" == typeof r.length) { t && (r = t); var _n = 0, F = function F() {}; return { s: F, n: function n() { return _n >= r.length ? { done: !0 } : { done: !1, value: r[_n++] }; }, e: function e(r) { throw r; }, f: F }; } throw new TypeError("Invalid attempt to iterate non-iterable instance.\nIn order to be iterable, non-array objects must have a [Symbol.iterator]() method."); } var o, a = !0, u = !1; return { s: function s() { t = t.call(r); }, n: function n() { var r = t.next(); return a = r.done, r; }, e: function e(r) { u = !0, o = r; }, f: function f() { try { a || null == t.return || t.return(); } finally { if (u) throw o; } } }; }
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; } /**
* SPDX-FileCopyrightText: © 2019 Liferay, Inc. <https://liferay.com>
* SPDX-License-Identifier: BSD-3-Clause
*/
var currentInteraction = null;
var hasSetupGlobalListeners = false;
var hasEventBeforeFocus = false;
var hasBlurredWindowRecently = false;
var handlers = new Set();
function isValidKey(event) {
// Control and Shift keys trigger when navigating back to the tab with keyboard.
return !(event.metaKey || !(0, _platform.isMac)() && event.altKey || event.ctrlKey || event.key === 'Control' || event.key === 'Shift' || event.key === 'Meta');
}
function isVirtualClick(event) {
if (event.mozInputSource === 0 && event.isTrusted) {
return true;
}
return event.detail === 0 && !event.pointerType;
}
function isFocusVisible() {
return currentInteraction !== 'pointer';
}
function getInteraction() {
return currentInteraction;
}
function callHandlers(interaction) {
var _iterator = _createForOfIteratorHelper(handlers),
_step;
try {
for (_iterator.s(); !(_step = _iterator.n()).done;) {
var handler = _step.value;
handler(interaction);
}
} catch (err) {
_iterator.e(err);
} finally {
_iterator.f();
}
}
/**
* Detects what type of interaction the user is doing with the page, using the
* keyboard, pointer or using screen reader. This works like a singleton even
* if it is declared more than once.
*
* This is inspired by the implementation:
* https://github.com/adobe/react-spectrum/blob/d10f20a3f4ca7ffa807fcaceb944274da825a7b9/packages/%40react-aria/interactions/src/useFocusVisible.ts
*/
function useInteractionFocus() {
(0, _react.useEffect)(function () {
if (hasSetupGlobalListeners) {
return;
}
var onKeyboard = function onKeyboard(event) {
hasEventBeforeFocus = true;
if (isValidKey(event)) {
currentInteraction = 'keyboard';
callHandlers(currentInteraction);
}
};
var onClick = function onClick(event) {
if (isVirtualClick(event)) {
hasEventBeforeFocus = true;
currentInteraction = 'virtual';
callHandlers(currentInteraction);
}
};
var onFocus = function onFocus(event) {
if (event.target === window || event.target === document) {
return;
}
if (!hasEventBeforeFocus && !hasBlurredWindowRecently) {
currentInteraction = 'virtual';
callHandlers(currentInteraction);
}
hasEventBeforeFocus = false;
hasBlurredWindowRecently = false;
};
var onBlur = function onBlur() {
hasEventBeforeFocus = false;
hasBlurredWindowRecently = true;
};
var onPointer = function onPointer(event) {
currentInteraction = 'pointer';
if (event.type === 'mousedown' || event.type === 'pointerdown') {
hasEventBeforeFocus = true;
callHandlers(currentInteraction);
}
};
document.addEventListener('keydown', onKeyboard, true);
document.addEventListener('keyup', onKeyboard, true);
document.addEventListener('click', onClick, true);
window.addEventListener('focus', onFocus, true);
window.addEventListener('blur', onBlur, false);
if (typeof PointerEvent !== 'undefined') {
document.addEventListener('pointerdown', onPointer, true);
document.addEventListener('pointermove', onPointer, true);
document.addEventListener('pointerup', onPointer, true);
} else {
document.addEventListener('mousedown', onPointer, true);
document.addEventListener('mousemove', onPointer, true);
document.addEventListener('mouseup', onPointer, true);
}
hasSetupGlobalListeners = true;
return function () {
document.removeEventListener('keydown', onKeyboard, true);
document.removeEventListener('keyup', onKeyboard, true);
document.removeEventListener('click', onClick, true);
window.removeEventListener('focus', onFocus, true);
window.removeEventListener('blur', onBlur, false);
if (typeof PointerEvent !== 'undefined') {
document.removeEventListener('pointerdown', onPointer, true);
document.removeEventListener('pointermove', onPointer, true);
document.removeEventListener('pointerup', onPointer, true);
} else {
document.removeEventListener('mousedown', onPointer, true);
document.removeEventListener('mousemove', onPointer, true);
document.removeEventListener('mouseup', onPointer, true);
}
hasSetupGlobalListeners = false;
};
}, []);
return {
getInteraction: getInteraction,
isFocusVisible: isFocusVisible
};
}
function useFocusVisible() {
useInteractionFocus();
var _useState = (0, _react.useState)(isFocusVisible()),
_useState2 = _slicedToArray(_useState, 2),
interaction = _useState2[0],
setInteraction = _useState2[1];
(0, _react.useEffect)(function () {
var handler = function handler(interaction) {
setInteraction(interaction !== 'pointer');
};
handlers.add(handler);
return function () {
handlers.delete(handler);
};
}, []);
return interaction;
}