@atlaskit/navigation-system/dist/cjs/ui/page-layout/use-occupied-layout-width.js

The latest navigation system for Atlassian apps.

"use strict";

var _interopRequireDefault = require("@babel/runtime/helpers/interopRequireDefault");
Object.defineProperty(exports, "__esModule", {
  value: true
});
exports.useOccupiedLayoutWidth = useOccupiedLayoutWidth;
var _slicedToArray2 = _interopRequireDefault(require("@babel/runtime/helpers/slicedToArray"));
var _react = require("react");
var _bindEventListener = require("bind-event-listener");
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$/.test(t) ? _arrayLikeToArray(r, a) : void 0; } }
function _arrayLikeToArray(r, a) { (null == a || a > r.length) && (a = r.length); for (var e = 0, n = Array(a); e < a; e++) n[e] = r[e]; return n; }
/**
 * Measures the existing Root slots that are not managed by the chat-layout allocator.
 * Only count separate inline columns: Aside stacks below Main on mobile, and the
 * legacy Panel spans other areas while overlaying. Read the grid rather than duplicating
 * its responsive breakpoints. Border boxes include slot borders and live splitter widths.
 */
function useOccupiedLayoutWidth(layoutRef) {
  var _useState = (0, _react.useState)(0),
    _useState2 = (0, _slicedToArray2.default)(_useState, 2),
    width = _useState2[0],
    setWidth = _useState2[1];
  (0, _react.useEffect)(function () {
    var root = layoutRef === null || layoutRef === void 0 ? void 0 : layoutRef.current;
    if (!root) {
      return;
    }
    var occupiedSlots = [];
    var measure = function measure() {
      var _getComputedStyle$gri, _rows$map$find;
      if (occupiedSlots.length === 0) {
        setWidth(0);
        return;
      }
      var rows = (_getComputedStyle$gri = getComputedStyle(root).gridTemplateAreas.match(/"[^"]+"/g)) !== null && _getComputedStyle$gri !== void 0 ? _getComputedStyle$gri : [];
      var mainRow = (_rows$map$find = rows.map(function (row) {
        return row.replace(/"/g, '').split(/\s+/);
      }).find(function (row) {
        return row.includes('main');
      })) !== null && _rows$map$find !== void 0 ? _rows$map$find : [];
      var occupiedWidth = 0;
      var _iterator = _createForOfIteratorHelper(occupiedSlots),
        _step;
      try {
        var _loop = function _loop() {
          var child = _step.value;
          var style = getComputedStyle(child);
          var area = style.gridArea.split('/').map(function (part) {
            return part.trim();
          });
          var slot = area[0];
          if (['ribbon', 'aside', 'panel'].includes(slot) && area.every(function (part) {
            return part === slot;
          }) && mainRow.includes(slot) && style.display !== 'none' && style.position !== 'absolute' && style.position !== 'fixed') {
            occupiedWidth += child.getBoundingClientRect().width;
          }
        };
        for (_iterator.s(); !(_step = _iterator.n()).done;) {
          _loop();
        }
      } catch (err) {
        _iterator.e(err);
      } finally {
        _iterator.f();
      }
      setWidth(occupiedWidth);
    };
    var resizeObserver = new ResizeObserver(measure);
    var observeSlots = function observeSlots() {
      resizeObserver.disconnect();
      resizeObserver.observe(root);
      // Managed regions resize on every drag frame but cannot consume extra tracks.
      // Keep them out of both the observer and the measurement loop. Slot identity,
      // unlike gridArea, remains stable when a region switches to overlay mode.
      // TopNav and Banner also span columns rather than consuming independent tracks.
      occupiedSlots = Array.from(root.children).filter(function (child) {
        return child instanceof HTMLElement && child.hasAttribute('data-layout-slot') && !child.matches('nav, header, [role="main"], [data-layout-chat-panel]') && getComputedStyle(child).gridArea.split('/')[0].trim() !== 'banner';
      });
      var _iterator2 = _createForOfIteratorHelper(occupiedSlots),
        _step2;
      try {
        for (_iterator2.s(); !(_step2 = _iterator2.n()).done;) {
          var child = _step2.value;
          resizeObserver.observe(child);
        }
      } catch (err) {
        _iterator2.e(err);
      } finally {
        _iterator2.f();
      }
      measure();
    };
    var mutationObserver = new MutationObserver(observeSlots);
    mutationObserver.observe(root, {
      childList: true
    });
    observeSlots();
    var unbind = (0, _bindEventListener.bind)(window, {
      type: 'resize',
      listener: measure
    });
    return function () {
      unbind();
      resizeObserver.disconnect();
      mutationObserver.disconnect();
    };
  }, [layoutRef]);
  return width;
}