108 lines
3.1 KiB
JavaScript
108 lines
3.1 KiB
JavaScript
/**
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* The examples provided by Facebook are for non-commercial testing and
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* evaluation purposes only.
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*
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* Facebook reserves all rights not expressly granted.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
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* OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NON INFRINGEMENT. IN NO EVENT SHALL
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* FACEBOOK BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
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* AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
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* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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*
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* @flow
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*/
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'use strict';
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const React = require('react');
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const ReactNative = require('react-native');
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// $FlowFixMe : This is a platform-forked component, and flow seems to only run on iOS?
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const UIExplorerList = require('./UIExplorerList');
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const {
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NavigationExperimental,
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} = ReactNative;
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const {
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Reducer: NavigationReducer,
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} = NavigationExperimental;
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const StackReducer = NavigationReducer.StackReducer;
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import type {NavigationState} from 'NavigationTypeDefinition';
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import type {UIExplorerAction} from './UIExplorerActions';
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export type UIExplorerNavigationState = {
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externalExample: ?string;
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stack: NavigationState;
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};
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const UIExplorerStackReducer = StackReducer({
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getPushedReducerForAction: (action, lastState) => {
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if (action.type === 'UIExplorerExampleAction' && UIExplorerList.Modules[action.openExample]) {
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if (lastState.children.find(child => child.key === action.openExample)) {
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// The example is already open, we should avoid pushing examples twice
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return null;
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}
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return (state) => state || {key: action.openExample};
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}
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return null;
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},
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getReducerForState: (initialState) => (state) => state || initialState,
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initialState: {
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key: 'UIExplorerMainStack',
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index: 0,
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children: [
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{key: 'AppList'},
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],
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},
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});
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function UIExplorerNavigationReducer(lastState: ?UIExplorerNavigationState, action: any): UIExplorerNavigationState {
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if (!lastState) {
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return {
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externalExample: null,
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stack: UIExplorerStackReducer(null, action),
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};
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}
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if (action.type === 'UIExplorerListWithFilterAction') {
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return {
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externalExample: null,
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stack: {
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key: 'UIExplorerMainStack',
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index: 0,
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children: [
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{
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key: 'AppList',
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filter: action.filter,
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},
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],
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},
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};
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}
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if (action.type === 'BackAction' && lastState.externalExample) {
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return {
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...lastState,
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externalExample: null,
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};
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}
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if (action.type === 'UIExplorerExampleAction') {
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const ExampleModule = UIExplorerList.Modules[action.openExample];
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if (ExampleModule && ExampleModule.external) {
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return {
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...lastState,
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externalExample: action.openExample,
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};
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}
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}
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const newStack = UIExplorerStackReducer(lastState.stack, action);
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if (newStack !== lastState.stack) {
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return {
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externalExample: null,
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stack: newStack,
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}
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}
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return lastState;
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}
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module.exports = UIExplorerNavigationReducer;
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