@atlaskit/navigation-system
Version:
The latest navigation system for Atlassian apps.
77 lines (76 loc) • 4.36 kB
JavaScript
;
var _interopRequireDefault = require("@babel/runtime/helpers/interopRequireDefault");
Object.defineProperty(exports, "__esModule", {
value: true
});
exports.useMeasuredTopNavBreakpoints = useMeasuredTopNavBreakpoints;
var _slicedToArray2 = _interopRequireDefault(require("@babel/runtime/helpers/slicedToArray"));
var _react = require("react");
var _useLayoutEffect = require("@atlaskit/ds-lib/use-layout-effect");
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$/.test(t) ? _arrayLikeToArray(r, a) : void 0; } }
function _arrayLikeToArray(r, a) { (null == a || a > r.length) && (a = r.length); for (var e = 0, n = Array(a); e < a; e++) n[e] = r[e]; return n; }
function useMeasuredTopNavBreakpoints(topNav, remProbe) {
var _useState = (0, _react.useState)({
belowSm: false,
hasMeasured: false
}),
_useState2 = (0, _slicedToArray2.default)(_useState, 2),
breakpoints = _useState2[0],
setBreakpoints = _useState2[1];
(0, _useLayoutEffect.useLayoutEffect)(function () {
var view = topNav === null || topNav === void 0 ? void 0 : topNav.ownerDocument.defaultView;
if (!topNav || !view) {
return;
}
var updateWidth = function updateWidth(width) {
var rootFontSize = parseFloat(view.getComputedStyle(topNav.ownerDocument.documentElement).fontSize) || 16;
var belowSm = width < 48 * rootFontSize;
// Navigation can still be hydrating inside Suspense. An urgent context
// update would discard its server DOM and show the loading fallback.
(0, _react.startTransition)(function () {
setBreakpoints(function (previous) {
return previous.hasMeasured && previous.belowSm === belowSm ? previous : {
belowSm: belowSm,
hasMeasured: true
};
});
});
};
var width = topNav.getBoundingClientRect().width;
updateWidth(width);
if (!view.ResizeObserver) {
return;
}
var observer = new view.ResizeObserver(function (entries) {
var _iterator = _createForOfIteratorHelper(entries),
_step;
try {
for (_iterator.s(); !(_step = _iterator.n()).done;) {
var entry = _step.value;
if (entry.target === topNav) {
var _entry$borderBoxSize$, _entry$borderBoxSize;
width = (_entry$borderBoxSize$ = (_entry$borderBoxSize = entry.borderBoxSize) === null || _entry$borderBoxSize === void 0 || (_entry$borderBoxSize = _entry$borderBoxSize[0]) === null || _entry$borderBoxSize === void 0 ? void 0 : _entry$borderBoxSize.inlineSize) !== null && _entry$borderBoxSize$ !== void 0 ? _entry$borderBoxSize$ : topNav.getBoundingClientRect().width;
}
}
// The rem probe resizes when the root font changes, even if the header
// stays the same pixel width. Reevaluate against the last measured width.
} catch (err) {
_iterator.e(err);
} finally {
_iterator.f();
}
updateWidth(width);
});
observer.observe(topNav, {
box: 'border-box'
});
if (remProbe) {
observer.observe(remProbe);
}
return function () {
return observer.disconnect();
};
}, [topNav, remProbe]);
return breakpoints;
}