@react-navigation/core
Version:
Core utilities for building navigators
81 lines (80 loc) • 4.07 kB
JavaScript
;
Object.defineProperty(exports, "__esModule", {
value: true
});
exports.default = useNavigationHelpers;
var _routers = require("@react-navigation/routers");
var React = _interopRequireWildcard(require("react"));
var _NavigationContext = _interopRequireDefault(require("./NavigationContext"));
var _types = require("./types");
var _UnhandledActionContext = _interopRequireDefault(require("./UnhandledActionContext"));
function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }
function _getRequireWildcardCache(nodeInterop) { if (typeof WeakMap !== "function") return null; var cacheBabelInterop = new WeakMap(); var cacheNodeInterop = new WeakMap(); return (_getRequireWildcardCache = function (nodeInterop) { return nodeInterop ? cacheNodeInterop : cacheBabelInterop; })(nodeInterop); }
function _interopRequireWildcard(obj, nodeInterop) { if (!nodeInterop && obj && obj.__esModule) { return obj; } if (obj === null || typeof obj !== "object" && typeof obj !== "function") { return { default: obj }; } var cache = _getRequireWildcardCache(nodeInterop); if (cache && cache.has(obj)) { return cache.get(obj); } var newObj = {}; var hasPropertyDescriptor = Object.defineProperty && Object.getOwnPropertyDescriptor; for (var key in obj) { if (key !== "default" && Object.prototype.hasOwnProperty.call(obj, key)) { var desc = hasPropertyDescriptor ? Object.getOwnPropertyDescriptor(obj, key) : null; if (desc && (desc.get || desc.set)) { Object.defineProperty(newObj, key, desc); } else { newObj[key] = obj[key]; } } } newObj.default = obj; if (cache) { cache.set(obj, newObj); } return newObj; }
// This is to make TypeScript compiler happy
// eslint-disable-next-line babel/no-unused-expressions
_types.PrivateValueStore;
/**
* Navigation object with helper methods to be used by a navigator.
* This object includes methods for common actions as well as methods the parent screen's navigation object.
*/
function useNavigationHelpers(_ref) {
let {
id: navigatorId,
onAction,
getState,
emitter,
router
} = _ref;
const onUnhandledAction = React.useContext(_UnhandledActionContext.default);
const parentNavigationHelpers = React.useContext(_NavigationContext.default);
return React.useMemo(() => {
const dispatch = op => {
const action = typeof op === 'function' ? op(getState()) : op;
const handled = onAction(action);
if (!handled) {
onUnhandledAction === null || onUnhandledAction === void 0 ? void 0 : onUnhandledAction(action);
}
};
const actions = {
...router.actionCreators,
..._routers.CommonActions
};
const helpers = Object.keys(actions).reduce((acc, name) => {
// @ts-expect-error: name is a valid key, but TypeScript is dumb
acc[name] = function () {
return dispatch(actions[name](...arguments));
};
return acc;
}, {});
const navigationHelpers = {
...parentNavigationHelpers,
...helpers,
dispatch,
emit: emitter.emit,
isFocused: parentNavigationHelpers ? parentNavigationHelpers.isFocused : () => true,
canGoBack: () => {
const state = getState();
return router.getStateForAction(state, _routers.CommonActions.goBack(), {
routeNames: state.routeNames,
routeParamList: {},
routeGetIdList: {}
}) !== null || (parentNavigationHelpers === null || parentNavigationHelpers === void 0 ? void 0 : parentNavigationHelpers.canGoBack()) || false;
},
getId: () => navigatorId,
getParent: id => {
if (id !== undefined) {
let current = navigationHelpers;
while (current && id !== current.getId()) {
current = current.getParent();
}
return current;
}
return parentNavigationHelpers;
},
getState
};
return navigationHelpers;
}, [navigatorId, emitter.emit, getState, onAction, onUnhandledAction, parentNavigationHelpers, router]);
}
//# sourceMappingURL=useNavigationHelpers.js.map