@react-navigation/core/lib/commonjs/useOnRouteFocus.js

Core utilities for building navigators

"use strict";

Object.defineProperty(exports, "__esModule", {
  value: true
});
exports.useOnRouteFocus = useOnRouteFocus;
var React = _interopRequireWildcard(require("react"));
var _NavigationBuilderContext = require("./NavigationBuilderContext.js");
function _getRequireWildcardCache(e) { if ("function" != typeof WeakMap) return null; var r = new WeakMap(), t = new WeakMap(); return (_getRequireWildcardCache = function (e) { return e ? t : r; })(e); }
function _interopRequireWildcard(e, r) { if (!r && e && e.__esModule) return e; if (null === e || "object" != typeof e && "function" != typeof e) return { default: e }; var t = _getRequireWildcardCache(r); if (t && t.has(e)) return t.get(e); var n = { __proto__: null }, a = Object.defineProperty && Object.getOwnPropertyDescriptor; for (var u in e) if ("default" !== u && {}.hasOwnProperty.call(e, u)) { var i = a ? Object.getOwnPropertyDescriptor(e, u) : null; i && (i.get || i.set) ? Object.defineProperty(n, u, i) : n[u] = e[u]; } return n.default = e, t && t.set(e, n), n; }
/**
 * Hook to handle focus actions for a route.
 * Focus action needs to be treated specially, coz when a nested route is focused,
 * the parent navigators also needs to be focused.
 */
function useOnRouteFocus({
  router,
  getState,
  key: sourceRouteKey,
  setState
}) {
  const {
    onRouteFocus: onRouteFocusParent
  } = React.useContext(_NavigationBuilderContext.NavigationBuilderContext);
  return React.useCallback(key => {
    const state = getState();
    const result = router.getStateForRouteFocus(state, key);
    if (result !== state) {
      setState(result);
    }
    if (onRouteFocusParent !== undefined && sourceRouteKey !== undefined) {
      onRouteFocusParent(sourceRouteKey);
    }
  }, [getState, onRouteFocusParent, router, setState, sourceRouteKey]);
}
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