useHasAncestorRoute.ts
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| import type { | |
| FormsStackParamList, | |
| RootStackParamList, | |
| } from '@your/app'; | |
| import type { | |
| NavigationState, | |
| ParamListBase, | |
| PartialState, | |
| Route, | |
| } from '@react-navigation/native'; | |
| import { useNavigationState } from '@react-navigation/native'; | |
| type NavigationRoute< | |
| ParamList extends ParamListBase, | |
| RouteName extends keyof ParamList, | |
| > = Route<Extract<RouteName, string>, ParamList[RouteName]> & { | |
| state?: NavigationState | PartialState<NavigationState>; | |
| }; | |
| type ParamList = RootStackParamList & FormsStackParamList; | |
| export function useHasAncestorRoute(name: keyof ParamList) { | |
| const state = useNavigationState< | |
| RootStackParamList, | |
| NavigationState<ParamList> | |
| >((_state) => _state); | |
| let actualRoute = state.routes[state.index]; | |
| if (actualRoute.name === name) { | |
| return true; | |
| } | |
| while (actualRoute.state) { | |
| if (actualRoute.state.index !== undefined) { | |
| actualRoute = actualRoute.state.routes[ | |
| actualRoute.state.index | |
| ] as NavigationRoute<ParamList, keyof ParamList>; | |
| if (actualRoute.name === name) { | |
| return true; | |
| } | |
| } | |
| } | |
| return false; | |
| } |