NavigationActions.js.flow
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/**
* @flow
*/
import type {
NavigationAction,
PossiblyDeprecatedNavigationAction,
DeprecatedNavigationNavigateAction,
NavigationInitAction,
NavigationNavigateAction,
NavigationBackAction,
NavigationSetParamsAction,
NavigationResetAction,
NavigationUriAction,
NavigationParams,
} from './TypeDefinition';
const BACK = 'Navigation/BACK';
const INIT = 'Navigation/INIT';
const NAVIGATE = 'Navigation/NAVIGATE';
const RESET = 'Navigation/RESET';
const SET_PARAMS = 'Navigation/SET_PARAMS';
const URI = 'Navigation/URI';
const createAction = (type: string, fn: any) => {
fn.toString = () => type;
return fn;
};
const back = createAction(
BACK,
(payload: { key?: ?string } = {}): NavigationBackAction => ({
type: BACK,
key: payload.key,
})
);
const init = createAction(
INIT,
(payload: { params?: NavigationParams } = {}): NavigationInitAction => {
const action: NavigationInitAction = {
type: INIT,
};
if (payload.params) {
action.params = payload.params;
}
return action;
}
);
const navigate = createAction(
NAVIGATE,
(payload: {
routeName: string,
params?: ?NavigationParams,
action?: ?NavigationNavigateAction,
}): NavigationNavigateAction => {
const action: NavigationNavigateAction = {
type: NAVIGATE,
routeName: payload.routeName,
};
if (payload.params) {
action.params = payload.params;
}
if (payload.action) {
action.action = payload.action;
}
return action;
}
);
const reset = createAction(
RESET,
(payload: {
index: number,
key?: ?string,
actions: Array<NavigationNavigateAction>,
}): NavigationResetAction => ({
type: RESET,
index: payload.index,
key: payload.key,
actions: payload.actions,
})
);
const setParams = createAction(
SET_PARAMS,
(payload: {
key: string,
params: NavigationParams,
}): NavigationSetParamsAction => ({
type: SET_PARAMS,
key: payload.key,
params: payload.params,
})
);
const uri = createAction(
URI,
(payload: { uri: string }): NavigationUriAction => ({
type: URI,
uri: payload.uri,
})
);
const mapDeprecatedNavigateAction = (
action: NavigationNavigateAction | DeprecatedNavigationNavigateAction
): NavigationNavigateAction => {
if (action.type === 'Navigate') {
const payload: Object = {
routeName: action.routeName,
params: action.params,
};
if (action.action) {
payload.action = mapDeprecatedNavigateAction(action.action);
}
return navigate(payload);
}
return action;
};
const mapDeprecatedAction = (
action: PossiblyDeprecatedNavigationAction
): NavigationAction => {
if (action.type === 'Back') {
return back(action);
} else if (action.type === 'Init') {
return init(action);
} else if (action.type === 'Navigate') {
return mapDeprecatedNavigateAction(action);
} else if (action.type === 'Reset') {
return reset({
index: action.index,
key: action.key,
actions: action.actions.map(mapDeprecatedNavigateAction),
});
} else if (action.type === 'SetParams') {
return setParams(action);
}
return action;
};
const mapDeprecatedActionAndWarn = (
action: PossiblyDeprecatedNavigationAction
): NavigationAction => {
const newAction = mapDeprecatedAction(action);
if (newAction !== action) {
const oldType = action.type;
const newType = newAction.type;
console.warn(
[
`The action type '${oldType}' has been renamed to '${newType}'.`,
`'${oldType}' will continue to work while in beta but will be removed`,
'in the first major release. Moving forward, you should use the',
'action constants and action creators exported by this library in',
"the 'actions' object.",
'See https://github.com/react-community/react-navigation/pull/120 for',
'more details.',
].join(' ')
);
}
return newAction;
};
export default {
// Action constants
BACK,
INIT,
NAVIGATE,
RESET,
SET_PARAMS,
URI,
// Action creators
back,
init,
navigate,
reset,
setParams,
uri,
// TODO: Remove once old actions are deprecated
mapDeprecatedActionAndWarn,
};