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feat: add ability to dispatch a update function

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This commit is contained in:
satyajit.happy
2019-06-12 00:08:57 +02:00
parent 1c394e1279
commit 720a90bd5f
2 changed files with 12 additions and 5 deletions
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7
src/types.tsx
View File

@@ -99,9 +99,12 @@ export type NavigationHelpers<
ParamList extends ParamListBase = ParamListBase
> = {
/**
* Dispatch an action to the router.
* Dispatch an action or an update function to the router.
* The update function will receive the current state,
*/
dispatch(action: NavigationAction): void;
dispatch(
action: NavigationAction | ((state: NavigationState) => NavigationState)
): void;
/**
* Navigate to a route in current navigation tree.

10
src/useNavigationBuilder.tsx
View File

@@ -180,8 +180,12 @@ export default function useNavigationBuilder(
);
const helpers = React.useMemo((): NavigationHelpers => {
const dispatch = (action: NavigationAction) => {
if (!onAction(action)) {
const dispatch = (
action: NavigationAction | ((state: NavigationState) => NavigationState)
) => {
if (typeof action === 'function') {
setState(action(getState()));
} else if (!onAction(action)) {
throw new Error(
`No navigators are able to handle the action "${action.type}".`
);
@@ -206,7 +210,7 @@ export default function useNavigationBuilder(
),
dispatch,
};
}, [onAction, parentNavigationHelpers, router.actionCreators]);
}, [getState, onAction, parentNavigationHelpers, router, setState]);
const navigation = React.useMemo(
() => ({